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WO2021029739A1 - Containment system and construction method thereof - Google Patents

Containment system and construction method thereof Download PDF

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Publication number
WO2021029739A1
WO2021029739A1 PCT/KR2020/010880 KR2020010880W WO2021029739A1 WO 2021029739 A1 WO2021029739 A1 WO 2021029739A1 KR 2020010880 W KR2020010880 W KR 2020010880W WO 2021029739 A1 WO2021029739 A1 WO 2021029739A1
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WO
WIPO (PCT)
Prior art keywords
buffer layer
tank
layer
wall
foam insulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2020/010880
Other languages
French (fr)
Korean (ko)
Inventor
์ด์ƒ๋ณต
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP2022509612A priority Critical patent/JP7359488B2/en
Publication of WO2021029739A1 publication Critical patent/WO2021029739A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/001—Thermal insulation specially adapted for cryogenic vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0329—Foam
    • F17C2203/0333—Polyurethane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0345—Fibres
    • F17C2203/035—Glass wool
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/228—Assembling processes by screws, bolts or rivets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG

Definitions

  • the present invention relates to a containment system, and more particularly, to a containment system for storing and transporting liquefied gas and a construction method thereof.
  • Cryogenic liquefied gases such as liquefied natural gas (LNG) and liquefied petroleum gas (LPG) are stored and transported by various containment systems such as tanks, ships, and pipes.
  • the containment system may be installed on a ship, barge, floating platform, or on land.
  • the containment system is largely divided into an independent type and a membrane type.
  • the standalone type consists of a tank with a sturdy structure made of aluminum, stainless steel, and steel alloy, and an insulation material attached to the outer wall of the tank.
  • the insulating material may be composed of an insulating panel, or may be composed of an insulating layer formed by a spray method.
  • Insulation panels may be made of polyurethane foam or expanded polystyrene, and are fixed to the outer wall of the tank by fasteners such as stud bolts.
  • the insulating layer may include polyurethane, and may be produced by mixing and spraying polyol and isocyanate with a spray gun on the outer wall of the tank.
  • the heat insulating layer does not need to install a fixture on the outer wall of the tank, and has excellent adhesion to the outer wall of the tank.
  • An aspect of the present invention is to provide a storage system capable of suppressing the occurrence of cracks and peeling of the insulation layer in a storage system having a spray-type insulation layer, and a construction method thereof.
  • a storage system includes a tank having an inner space for storing liquefied gas, a buffer layer fixed in a non-adhesive state to at least a part of an outer wall of the tank, and a spray method formed by covering the outer surface of the buffer layer. It includes a foam insulation layer.
  • the buffer layer is thinner and more flexible than the foamed insulating layer, and is made of a material having an elastic modulus less than that of the foamed insulating layer.
  • the buffer layer may include a heat insulating layer.
  • the heat insulating layer may include at least one selected from the group consisting of soft foamed urethane foam, soft foamed polystyrene, melamine foam, and polyethylene foam.
  • the inner and outer surfaces of the heat insulating layer may be covered with a thin metal plate, and the heat insulating layer and the thin metal plate may constitute a heat insulating part.
  • the buffer layer may include a first crack barrier covering an outer surface of the heat insulating portion.
  • the first crack barrier may include any one of a glass cloth and a glass mesh.
  • the buffer layer may be manufactured in the form of a sheet, and may be physically fixed to at least a part of the outer wall of the tank by a fastener.
  • the fixture may include a stud bolt fixed to the outer wall of the tank and passing through the buffer layer, a fixing washer fastened to the stud bolt on the buffer layer, and a fixing nut fastened to the stud bolt on the fixing washer.
  • the fixture may include a stud pin fixed to an outer wall of the tank and passing through the buffer layer, and a fixing washer fastened to the stud pin on the buffer layer.
  • the stud pin may include a vertical portion passing through the buffer layer and the fixing washer, and a horizontal portion bent from the vertical portion and in close contact with the upper surface of the fixing washer.
  • the containment system may further include a flexible protective layer covering the outer surface of the foamed insulating layer.
  • the foam insulation layer and the flexible protective layer can form a seamless single structure.
  • a second crack barrier may be located inside the foam insulation layer.
  • the second crack barrier may include at least one of a glass cloth, a glass mesh, and a metal matrix.
  • a method of constructing a containment system includes providing a tank for storing liquefied gas, fixing a buffer layer using a fixture on at least a portion of an outer wall of the tank, and spraying the outer surface of the buffer layer. And forming a foam insulation layer in a manner.
  • the buffer layer is thinner and more flexible than the foamed insulating layer, and is made of a material having an elastic modulus less than that of the foamed insulating layer.
  • the buffer layer may be manufactured in a roll form in which a long sheet is rolled and transferred to the outer wall of the tank, and may be sequentially disposed on the outer wall of the tank while the sheet is released from the roll.
  • the buffer layer disposed on the outer wall of the tank may include an overlap region in which two layers of sheets are overlapped.
  • the buffer layer may be physically fixed to at least a portion of the tank by means of a fastener, and a portion of the physically fixed buffer layer that does not overlap with the fastener may maintain a non-adhesion state with the outer wall of the tank.
  • the fixture may include stud bolts fixed to the outer wall of the tank.
  • the stud bolt may pass through the buffer layer, and the fixing washer and the fixing nut may be sequentially fastened to the stud bolt.
  • the fixture may comprise a stud pin fixed to the outer wall of the tank.
  • the stud pin When the buffer layer is disposed on the outer wall of the tank, the stud pin may penetrate the buffer layer, the fixing washer may be fastened to the stud pin, and the stud pin may be bent so that a part of the stud pin may be in close contact with the upper surface of the fixing washer.
  • the buffer layer may include a heat insulating part facing the tank and a first crack barrier covering an outer surface of the heat insulating part.
  • the heat insulating part may include a heat insulating layer including at least one selected from the group consisting of soft foamed urethane foam, soft foamed polystyrene, melamine foam, and polyethylene foam, and a metal thin plate covering the inner and outer surfaces of the heat insulating layer.
  • the first crack barrier may include any one of a glass cloth and a glass mesh.
  • a first foam insulation layer is formed on the buffer layer by a spray method
  • a second crack barrier including any one of a glass cloth and a glass mesh is disposed on the first foam insulation layer, and on the second crack barrier It may include a process of forming the second foam insulation layer by a spray method.
  • the construction method of the containment system may further include forming a flexible protective layer on the foamed insulating layer by spraying after forming the foamed insulating layer.
  • the storage system according to an embodiment of the present invention enables quick and simple construction, and low construction cost and high economical efficiency.
  • it can be applied to tanks of various shapes by minimizing mechanical fixation, can effectively suppress cracking and peeling of the foamed insulation layer, and can withstand extreme temperature changes, so the degree of freedom in operation is high.
  • FIG. 1 is a partially enlarged cross-sectional view of a storage system according to a first embodiment of the present invention.
  • FIG. 2 is an enlarged cross-sectional view of a buffer layer in the storage system shown in FIG. 1.
  • FIG 3 is a partially enlarged cross-sectional view of the containment system corresponding to the bent portion.
  • FIGS. 4 and 5 are partially enlarged cross-sectional views of a containment system according to a second embodiment of the present invention.
  • FIG. 6 is a partially enlarged cross-sectional view of a buffer layer and a fixture in the storage system according to the third embodiment of the present invention.
  • FIG. 7 is a flow chart showing a construction method of the storage system according to an embodiment of the present invention.
  • FIG. 8 and 9 are schematic diagrams of a tank shown to explain the first and second steps shown in FIG. 7.
  • 10 and 11 are enlarged cross-sectional views of a buffer layer and a fixture for explaining the second step shown in FIG. 7.
  • FIG. 12 is a schematic diagram showing the storage system after the fourth step shown in FIG. 7.
  • FIG. 1 is a partially enlarged cross-sectional view of a storage system according to a first embodiment of the present invention
  • FIG. 2 is an enlarged cross-sectional view of a buffer layer in the storage system shown in FIG. 1.
  • the storage system 100 of the first embodiment includes a tank 10 for storing liquefied gas, a buffer layer 20 fixed to the outer wall of the tank 10 in a non-adhesive state, and a buffer layer. It includes a foam insulation layer 30 covering the outer surface of (20).
  • the tank 10 may have various shapes such as a spherical type, a cylindrical type, and a prismatic type, and may be made of metal such as aluminum, stainless steel, and steel alloy.
  • the liquefied gas is stored in the sealed inner space of the tank 10.
  • the buffer layer 20 includes an insulating portion 21 facing the tank 10 and a crack barrier 22 covering the outer surface of the insulating portion 21.
  • the heat insulating part 21 may include a heat insulating layer 211 and a thin metal plate 212 covering both surfaces of the heat insulating layer 211.
  • the insulating layer 211 may include at least one of soft foamed urethane foam, soft foamed polystyrene, melamine foam, and polyethylene foam
  • the metal thin plate 212 may be an aluminum thin plate, and more preferably, fiberglass is adhered to the aluminum thin plate. It may be a thin plate (ALGC, Aluminum & Glass-Cloth).
  • the crack barrier 22 may include at least one of a glass cloth and a glass mesh.
  • the buffer layer 20 is manufactured in advance in the form of a sheet, and is physically fixed on the outer wall of the tank 10 by the fixture 40 without an adhesive means such as an adhesive.
  • the fixture 40 may be composed of a combination of a stud bolt 41 and at least one fixing washer 42 and a fixing nut 43.
  • the stud bolt 41 is fixed to the outer wall of the tank 10 by welding or the like, and penetrates the buffer layer 20.
  • the first fixing washer 421 is fastened to the stud bolt 41 on the buffer layer 20, and the second fixing washer 422 and the fixing nut 43 are sequentially placed on the first fixing washer 421 and the stud bolt 41 Is fastened to.
  • the first fixing washer 421 strongly presses the buffer layer 20 by the fastening force of the fixing nut 43 and firmly fixes the buffer layer 20 to the tank 10.
  • the first fixing washer 421 may be made of one of urethane rubber, plywood, and plastic, and may have a relatively large diameter to secure a sufficient contact area with the buffer layer 20.
  • the second fixing washer 422 may be made of metal, and has a size smaller than that of the first fixing washer 421.
  • the second fixing washer 422 is for reinforcing strength, and may be selectively used when there is a risk of damage such as cracking of the first fixing washer 421.
  • a plurality of fasteners 40 are provided on the outer wall of the tank 10 at a distance from each other.
  • one fixture 40 is illustrated in FIG. 1.
  • the buffer layer 20 is fixed in position by a physical force pressed by the fixture 40, and is firmly fixed to at least a portion of the outer wall of the tank 10 in a non-adhesive state.
  • 'non-adhesive' means that chemical bonding means is excluded.
  • the buffer layer 20 may be fixed to the entire outer wall of the tank 10 in a non-adhesive state, but only a portion of the outer wall of the tank 10 is fixed in a non-adhesive state and adhered to the rest It can also be fixed in the state. That is, in the embodiment of the present invention, not only the case where the buffer layer 20 is fixed to the entire outer wall of the tank 10 in a non-adhesive state, but also the buffer layer 20 is fixed to a part of the outer wall of the tank 10 in a non-adhesive state. Includes cases.
  • the foam insulation layer 30 is formed by a spray method, and is fixed to the outer surface of the buffer layer 20 without a separate adhesive means.
  • the foam insulation layer 30 may include polyurethane, and will be produced by mixing and spraying polyol and isocyanate with a spray gun on the outer surfaces of the fixture 40 and the buffer layer 20. I can.
  • the polyol and the isocyanate are contained in their respective containers and then pumped with a spray gun through a hose and mixed, and a mixture thereof is sprayed onto the outer surface of the buffer layer 20.
  • the sprayed mixture adheres to the outer surface of the buffer layer 20 and starts to expand. In the process of expansion, the mixture is transformed into a rigid porous structure to create a cellular foam with enhanced heat retention and permanently on the outer surface of the buffer layer 20. Is fixed.
  • the crack barrier 22 includes any one of a glass cloth and a glass mesh, and thus has a fabric structure or a mesh structure in which fine holes are formed. Accordingly, the foamed insulating layer 30 may penetrate the fine holes or gaps of the crack barrier 22 to come into contact with the metal thin plate 212 of the insulating part 21, and may be very firmly attached to the buffer layer 20. .
  • the foam insulation layer 30 may be covered with a flexible protective layer 50.
  • the flexible protective layer 50 may be composed of a semi-flexible coating layer or a semi-flexible mastic, a reinforced coating layer reinforcing the same, or a jacketing of a metal material.
  • the flexible protective layer 50 may be formed by spray-spraying and curing the coating composition on the outer surface of the foam insulation layer 30 using appropriate tools and equipment, or curing after applying the mastic composition.
  • the coating composition may be a polyurethane-based composition.
  • a metal material may be formed by jacketing the outer surface of the foamed insulating layer 30.
  • the buffer layer 20 except the tank 10, the foam insulation layer 30, and the flexible protective layer 50 constitute the cryogenic insulation structure 60.
  • the foamed insulating layer 30 occupies most of the cryogenic insulating structure 60 in terms of volume. That is, the buffer layer 20 and the flexible protective layer 50 have an extremely small thickness compared to the foamed insulating layer 30.
  • Each of the foam insulation layer 30 and the flexible protective layer 50 has a single structure that is seamless.
  • the foam insulation layer 30 and the flexible protective layer 50 which are seamless structures, smooth the surface of the containment system 100 and improve the airtightness of the containment system 100.
  • the flexible protective layer 50 increases the rigidity of the surface of the containment system 100.
  • the buffer layer 20 positioned between the tank 10 and the foam insulation layer 30 is thinner and flexible than the foam insulation layer 30, and has a smaller elastic modulus than the foam insulation layer 30.
  • elastic modulus is formed of a material.
  • a portion of the buffer layer 20 that does not overlap with the plurality of fasteners 40 referred to as a'non-fixed area' for convenience. ) Does not have a binding force on the outer wall of the tank 10.
  • the non-fixed portion of the buffer layer 20 simply covers the outer wall of the tank 10 without an adhesive, a predetermined gap exists between the outer wall of the tank 10 and the non-fixed portion, and the tank 10 ) There is no mutual binding force between the outer wall and the non-fixed part.
  • the cryogenic insulation structure 60 is located on the entire outer wall of the tank 10.
  • the outer wall of the tank 10 may include a flat portion and a bent portion.
  • 3 is a partially enlarged cross-sectional view of the containment system 100 corresponding to the bent portion.
  • the containment system 100 of FIG. 1 shows a flat portion. 1 and 3, in both the flat portion and the bent portion, a plurality of fasteners 40 are installed at a distance from each other, and a cryogenic insulation structure 60 having the same configuration is located in both the flat portion and the bent portion.
  • the inner and outer surfaces of the foam insulating layer 30 are maintained at the same temperature.
  • both the inner and outer surfaces of the foamed insulating layer 30 may maintain a temperature of 20ยฐC. There is no temperature gradient in the foam insulation layer 30.
  • liquefied gas for example, liquefied natural gas (LNG)
  • LNG liquefied natural gas
  • the buffer layer 20 in contact with the outer wall of the tank 10 and the inner surface of the foam insulation layer 30 in contact with the buffer layer 20 are approximately -163. While cooled to ยฐC, the outer surface of the foam insulation layer 30 is still maintained at 20 ยฐC.
  • the foamed insulating layer 30 has a temperature gradient of approximately 183ยฐC, and stress is generated in the buffer layer 20 and the foamed insulating layer 30 due to a difference in thermal expansion coefficient between the tank 10 and the foamed insulating layer 30.
  • the buffer layer 20 is thinner than the foam insulation layer 30, flexible, and is easily deformed by the material properties having a low elastic modulus.
  • the deformation of the buffer layer 20 acts to reduce the stress of the foamed insulating layer 30 by absorbing the strain of the foamed insulating layer 30.
  • the temperature gradient across the foam insulation layer 30 rises to approximately 208ยฐC.
  • the stress of the foam insulation layer 30 increases and the strain increases, but the buffer layer 20 is deformed more than the above-described case (when the outside air is at 20ยฐC) and absorbs the strain of the foam insulation layer 30 to absorb the foam insulation layer. Reduce the stress of (30).
  • the foamed insulating layer 30 is not related to the behavior of the tank 10. That is, when the tank 10 and the foam insulation layer 30 are cooled by the liquefied gas, the tank 10 and the foam insulation layer 30 have a difference in shrinkage due to the difference in the coefficient of thermal expansion, but the buffer layer 20 and the tank (10) The gap existing between the outer walls blocks the direct interaction between the tank 10 and the foam insulation layer 30.
  • the foamed insulating layer 30 is connected to the tank 10 in behavior.
  • the shrinkage rate of the foam insulation layer 30 is different from the shrinkage rate of the tank 10, but the inner surface of the foam insulation layer 30 must follow the shrinkage rate of the tank 10. do. Accordingly, as the temperature gradient increases, the stress of the foam insulation layer 30 increases, and the risk of occurrence of cracks and peeling in the foam insulation layer 30 increases.
  • the foamed insulating layer 30 due to shrinkage-expansion of the tank 10 ( 30) cracking and peeling can be effectively suppressed.
  • FIG. 4 and 5 are partially enlarged cross-sectional views of a containment system according to a second embodiment of the present invention.
  • 4 corresponds to the flat portion of the outer wall of the tank
  • FIG. 5 corresponds to the bent portion of the outer wall of the tank.
  • a second crack barrier 33 is positioned inside the foam insulation layer 30 in the containment system 200 of the second embodiment.
  • the crack barrier 22 included in the buffer layer 20 is referred to as a'first crack barrier' for convenience.
  • the foam insulation layer 30 is between the first foam insulation layer 31 and the second crack barrier 33 and the flexible protective layer 50 positioned between the first crack barrier 22 and the second crack barrier 33 It may be composed of a second insulating foam layer 32 positioned on.
  • the first foam insulation layer 31 may be formed on the first crack barrier 22 by a spray method, and a second crack barrier 33 may be positioned on the first foam insulation layer 31.
  • the second insulating foam layer 32 may be formed on the second crack barrier 33 by a spray method.
  • the second crack barrier 33 is thinner and more flexible than the foam insulation layer 30 and is formed of a material having an elastic modulus smaller than that of the foam insulation layer 30.
  • the second crack barrier 33 may include at least one of a glass cloth, a glass mesh, and a metal matrix, and may be formed of the same material as the first crack barrier 22. Therefore, when the liquefied gas is stored in the tank 10 and stress is generated in the foam insulation layer 30, the second crack barrier 33 is easily deformed by the material properties and absorbs the strain of the foam insulation layer 30 to foam. It reduces the stress of the heat insulating layer 30.
  • the second crack barrier 33 may be formed in more than one number.
  • the storage system 200 of the second embodiment including the second crack barrier 33 in addition to the buffer layer 20 may more effectively suppress the occurrence of cracks and peeling of the foamed insulating layer 30. Therefore, when the temperature gradient across the foamed insulating layer 30 is very large, the stress of the foamed insulating layer 30 can be more effectively reduced.
  • the storage system 200 of the second embodiment has the same or similar configuration as that of the first embodiment, except that the second crack barrier 33 is added, and redundant descriptions are omitted.
  • FIG. 6 is a partially enlarged cross-sectional view of a buffer layer and a fixture in the storage system according to the third embodiment of the present invention.
  • the fixture 401 may include a stud pin 45 and a fixing washer 46.
  • the stud pin 45 includes a vertical portion 451 penetrating the buffer layer 20 and the fixing washer 46, and a horizontal portion 452 bent from the vertical portion 451 and in close contact with the upper surface of the fixing washer 46.
  • the horizontal portion 452 may be bent at a right angle from the vertical portion 451, and the end of the horizontal portion 452 may have a pointed shape.
  • the stud pin 45 may have an initial rod shape, and penetrates the buffer layer 20 in this state.
  • the fixing washer 46 is fastened to the stud pin 45 on the buffer layer 20.
  • the fixing washer 46 may be formed of the same material and shape as the first fixing washer 421 of the first embodiment. After the buffer layer 20 and the fixing washer 46 are coupled to the stud pin 45, the upper portion of the stud pin 45 is bent at a right angle to become a horizontal portion 452, and the horizontal portion 452 is fixed washer 46 ) And the buffer layer 20 are strongly pressed to firmly fix the buffer layer 20 to the tank 10.
  • the horizontal portion 452 of the stud pin 45 functions as the fixing nut 43 of the first embodiment.
  • the above-described fastener 401 can reduce the number of parts by omitting the fixing nut and simplify the overall configuration.
  • the storage system of the third embodiment has the same or similar configuration to any one of the first and second embodiments described above except for the configuration of the fixture 401.
  • FIG. 7 is a flow chart showing a construction method of the storage system according to an embodiment of the present invention.
  • a method of constructing a storage system includes a first step (S10) of providing a tank for storing liquefied gas, and a second step of fixing a buffer layer to the outer wall of the tank using a plurality of fasteners. It includes a step S20 and a third step S30 of forming a foam insulation layer on the outer surface of the buffer layer by spraying. After the third step (S30), a fourth step (S40) of forming a flexible protective layer on the foamed insulating layer may be performed.
  • FIG. 8 and 9 are schematic diagrams of a tank shown to explain the first and second steps shown in FIG. 7.
  • the tank 10 in the first step (S10), may be in any one of a spherical shape, a prismatic shape, and a cylindrical shape, and may be made of aluminum, stainless steel, or steel alloy.
  • the tank 10 includes a conduit structure 11 for introducing and discharging liquefied gas.
  • the conduit structure 11 may be a structure protruding to the outside of the tank 10.
  • FIG. 8 a case in which the tank 10 has a prismatic shape is illustrated as an example, and in FIG. 9, a case in which the tank 10 is cylindrical and installed on two supports 12 is illustrated as an example.
  • the shape and support structure of the tank 10 are not limited to the illustrated example.
  • a plurality of stud bolts 41 are installed on the outer wall of the tank 10 at a distance from each other.
  • a plurality of stud pins 45 may be installed on the outer wall of the tank 10 at a distance from each other.
  • the stud bolt 41 and the stud pin 45 may be made of the same metal as the tank 10 and are attached to the outer wall of the tank 10 by welding or the like.
  • FIG. 10 and 11 are enlarged cross-sectional views of a buffer layer and a fixture for explaining the second step shown in FIG. 7.
  • the fastener 40 of the first embodiment is shown
  • the fastener 401 of the third embodiment is shown.
  • the buffer layer 20 is disposed on the entire outer wall of the tank 10 excluding the pipe structure 11, and in this process, the stud bolt 41 or the stud pin 45 is applied to the buffer layer 20. ) Through. That is, a through hole corresponding to the stud bolt 41 or the stud pin 45 is formed in the buffer layer 20, and the buffer layer 20 is temporarily fixed by the stud bolt 41 or the stud pin 45. Done.
  • the buffer layer 20 may be in the form of an elongate sheet having a certain width, and may be manufactured in a form rolled in a roll form before being installed on the outer wall of the tank 10.
  • the buffer layer 20 manufactured in the form of a roll may be sequentially disposed on the outer wall of the tank 10 while the sheet is released from the roll after being transferred from the factory to the site.
  • the buffer layer 20 unwound from the roll may partially overlap the adjacent buffer layer 20 disposed earlier. Therefore, the buffer layer 20 on the outer wall of the tank 10 may have an overlap region 21 (see FIG. 9) in which two layers of sheets are overlapped.
  • the buffer layer 20 in the form of a roll is easy to transport and store, and there is a convenience that can be disposed in a short time regardless of the shape of the tank 10.
  • the buffer layer 20 may be manufactured in a sheet form of a certain standard rather than a long sheet form.
  • the buffer layer 20 may be manufactured in the form of a rectangular sheet having a certain horizontal and vertical standard.
  • the buffer layer 20 may be disposed on the outer wall of the tank 10 by adjoining the buffer layers 20 in the form of square sheets in parallel or overlapping the edges with each other.
  • the first and second fixing washers 421 and 422 and the fixing nut 43 are sequentially fastened to the stud bolt 41 over the buffer layer 20 to firmly fix the buffer layer 20 .
  • the fixing washer 46 is fastened to the stud pin 45 on the buffer layer 20, and the fixing washer 46 is bent at a right angle on the fixing washer 46. Press to securely fix the buffer layer 20.
  • the buffer layer 20 includes a heat insulating portion 21 facing the tank 10 and a crack barrier 22 covering the outer surface of the heat insulating portion 21, and the tank 10 by a plurality of fasteners 40 and 401 ) The position is fixed on the outer wall. In a portion of the buffer layer 20 that does not overlap with the fixtures 40 and 401 (non-fixed portion), a predetermined gap exists between the outer wall of the tank 10.
  • the buffer layer 20 may be fixed to the entire outer wall of the tank 10 in a non-adhesive state through fasteners 40 and 401, but only a portion of the outer wall of the tank 10 is non-adhesive. While being fixed in a state, it may be fixed in an adhesive state to the remaining part. That is, in the embodiment of the present invention, as well as a method of fixing the buffer layer 20 to the entire outer wall of the tank 10 in a non-adhesive state through the fasteners 40 and 401, the buffer layer 20 is attached to the outer wall of the tank 10 It also includes a method of fixing it in a non-adhesive state on a part.
  • a foam insulation layer 30 is formed on the outer surface of the buffer layer 20 in a third step S30 by a spray method.
  • the foam insulation layer 30 may include polyurethane, and may be formed by mixing and spraying polyol and isocyanate with a spray gun on the outer surface of the buffer layer 20. The sprayed mixture adheres to the outer surface of the buffer layer 20 and expands, and is cured while changing into a porous structure during the expansion process to constitute the foamed insulating layer 30.
  • the foam insulation layer 30 may be formed by dividing into a first foam insulation layer 31 and a second foam insulation layer 32, and the first A second crack barrier 33 may be positioned between the foamed insulating layer 31 and the second foamed insulating layer 32.
  • the first foam insulation layer 31 may be formed on the outer surface of the buffer layer 20 by a spray method, and the second crack barrier 33 composed of any one of glass cloth and glass mesh is the first foam insulation layer 31 Can be placed on top. Subsequently, the second insulating foam layer 32 may be formed on the second crack barrier 33 by spraying.
  • the second crack barrier 33 may be manufactured in a roll shape in which a long sheet is rolled, and may be disposed on the first foam insulation layer 31 while the sheet is unwound.
  • the second crack barrier 33 is easily deformed when stress occurs in the foam insulation layer 30 and absorbs the strain rate of the foam insulation layer 30 to reduce the stress of the foam insulation layer 30.
  • a flexible protective layer 50 is formed on the foamed insulating layer 30 in a fourth step S40.
  • the flexible protective layer 50 may be formed by curing a polyurethane-based coating composition after spray spraying or curing after applying a mastic composition.
  • FIG. 12 is a schematic diagram showing the storage system after the fourth step shown in FIG. 7.
  • the cryogenic insulation structure 60 in the containment system 100 enables quick and simple construction regardless of the shape of the tank 10 and can withstand extreme temperature changes, so the degree of freedom in operation is high.
  • the foamed insulating layer 30 and the flexible protective layer 50 have a single seamless structure, the surface of the containment system 100 is smoothed, and the airtightness and rigidity of the surface of the containment system 100 are improved.
  • buffer layer 21 heat insulation
  • first foamed insulating layer 32 second foamed insulating layer

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A containment system and a construction method thereof are disclosed. The containment system includes: a tank having an inner space for storing liquefied gas; a buffer layer fixed in a non-adhesive state to at least a portion of the outer wall of the tank; and a foam insulation layer formed by a spray method to cover the outer surface of the buffer layer. The buffer layer is thinner and more flexible than the foam insulating layer, and is formed of a material having an elastic modulus smaller than that of the foam insulating layer.

Description

๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ ๋ฐ ์ด์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•Containment system and construction method thereof

๋ณธ ๋ฐœ๋ช…์€ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์— ๊ด€ํ•œ ๊ฒƒ์œผ๋กœ์„œ, ๋ณด๋‹ค ์ƒ์„ธํ•˜๊ฒŒ๋Š” ์•กํ™”๊ฐ€์Šค๋ฅผ ์ €์žฅํ•˜๊ณ  ์šด๋ฐ˜ํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ ๋ฐ ์ด์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•์— ๊ด€ํ•œ ๊ฒƒ์ด๋‹ค.The present invention relates to a containment system, and more particularly, to a containment system for storing and transporting liquefied gas and a construction method thereof.

์•กํ™”์ฒœ์—ฐ๊ฐ€์Šค(LNG, Liquefied Natural Gas), ์•กํ™”์„์œ ๊ฐ€์Šค(LPG, Liquefied Petroleum Gas)์™€ ๊ฐ™์€ ๊ทน์ €์˜จ ์•กํ™”๊ฐ€์Šค๋Š” ํƒฑํฌ, ์„ ๋ฐ•, ํŒŒ์ดํ”„์™€ ๊ฐ™์€ ๋‹ค์–‘ํ•œ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(containment system)์— ์˜ํ•ด ์ €์žฅ ๋ฐ ์šด๋ฐ˜๋œ๋‹ค. ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์€ ์„ ๋ฐ•, ๋ฐ”์ง€์„ , ๋ถ€์œ ์‹ ํ”Œ๋žซํผ, ๋˜๋Š” ์œก์ƒ ๋“ฑ์— ์„ค์น˜๋  ์ˆ˜ ์žˆ๋‹ค.Cryogenic liquefied gases such as liquefied natural gas (LNG) and liquefied petroleum gas (LPG) are stored and transported by various containment systems such as tanks, ships, and pipes. The containment system may be installed on a ship, barge, floating platform, or on land.

๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์€ ํฌ๊ฒŒ ๋…๋ฆฝํ˜•(independent type)๊ณผ ๋ฉค๋ธŒ๋ ˆ์ธํ˜•(membrane type)์œผ๋กœ ๊ตฌ๋ถ„๋œ๋‹ค. ๋…๋ฆฝํ˜•์€ ์•Œ๋ฃจ๋ฏธ๋Š„, ์Šคํ…Œ์ธ๋ฆฌ์Šค ๊ฐ•, ๊ฐ• ํ•ฉ๊ธˆ ๋“ฑ์œผ๋กœ ์ œ์ž‘๋œ ๊ฒฌ๊ณ ํ•œ ๊ตฌ์กฐ์˜ ํƒฑํฌ์™€, ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๋ถ€์ฐฉ๋œ ๋‹จ์—ด์žฌ๋กœ ๊ตฌ์„ฑ๋œ๋‹ค. ๋‹จ์—ด์žฌ๋Š” ๋‹จ์—ด ํŒจ๋„๋กœ ๊ตฌ์„ฑ๋˜๊ฑฐ๋‚˜, ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ํ˜•์„ฑ๋œ ๋‹จ์—ด์ธต์œผ๋กœ ๊ตฌ์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค.The containment system is largely divided into an independent type and a membrane type. The standalone type consists of a tank with a sturdy structure made of aluminum, stainless steel, and steel alloy, and an insulation material attached to the outer wall of the tank. The insulating material may be composed of an insulating panel, or may be composed of an insulating layer formed by a spray method.

๋‹จ์—ด ํŒจ๋„์€ ํด๋ฆฌ์šฐ๋ ˆํƒ„ ํผ์ด๋‚˜ ๋ฐœํฌ ํด๋ฆฌ์Šคํ‹ฐ๋ Œ ๋“ฑ์œผ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๊ณ , ์Šคํ„ฐ๋“œ ๋ณผํŠธ์™€ ๊ฐ™์€ ๊ณ ์ •๊ตฌ(fastener)์— ์˜ํ•ด ํƒฑํฌ ์™ธ๋ฒฝ์— ๊ณ ์ •๋œ๋‹ค. ๋‹จ์—ด์ธต์€ ํด๋ฆฌ์šฐ๋ ˆํƒ„์„ ํฌํ•จํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ํƒฑํฌ ์™ธ๋ฒฝ์— ์Šคํ”„๋ ˆ์ด ๊ฑด์œผ๋กœ ํด๋ฆฌ์˜ฌ(polyol)๊ณผ ์ด์†Œ์‹œ์•„๋„ค์ดํŠธ(isocyanate)๋ฅผ ํ˜ผํ•ฉ ๋ถ„์‚ฌํ•˜๋Š” ๋ฐฉ๋ฒ•์œผ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๋‹ค.Insulation panels may be made of polyurethane foam or expanded polystyrene, and are fixed to the outer wall of the tank by fasteners such as stud bolts. The insulating layer may include polyurethane, and may be produced by mixing and spraying polyol and isocyanate with a spray gun on the outer wall of the tank.

๋‹จ์—ด์ธต์€ ํƒฑํฌ ์™ธ๋ฒฝ์— ๊ณ ์ •๊ตฌ๋ฅผ ์„ค์น˜ํ•  ํ•„์š”๊ฐ€ ์—†๊ณ , ํƒฑํฌ ์™ธ๋ฒฝ์— ๋Œ€ํ•œ ์ ‘์ฐฉ์„ฑ์ด ๋งค์šฐ ์šฐ์ˆ˜ํ•˜๋‹ค. ๋ฐ˜๋ฉด, ๋‘๊บผ์šด ์ ˆ์—ฐ์ด ํ•„์š”ํ•  ๋•Œ ํƒฑํฌ๊ฐ€ ์ž‘์„์ˆ˜๋ก, ๊ฐ๊ธฐ๋‘ฅํ˜•๊ณผ ๊ฐ™์ด ๋ชจ์„œ๋ฆฌ๊ฐ€ ์žˆ๋Š” ํ˜•์ƒ์ผ์ˆ˜๋ก, ๋‹จ์—ด์ธต์— ๊ท ์—ด๊ณผ ๋ฐ•๋ฆฌ๊ฐ€ ๋ฐœ์ƒํ•  ์œ„ํ—˜์ด ๋†’์•„์ง„๋‹ค. ์ด๋Š” ํƒฑํฌ์— ์•กํ™”๊ฐ€์Šค ์ €์žฅ ์‹œ ํƒฑํฌ์™€ ์™ธ๊ธฐ์˜ ์˜จ๋„ ์ฐจ์ด๋กœ ์ธํ•ด ๋‹จ์—ด์ธต์„ ๊ฐ€๋กœ์ง€๋ฅด๋Š” 200โ„ƒ ์ •๋„์˜ ์˜จ๋„ ๊ตฌ๋ฐฐ์™€, ํƒฑํฌ์™€ ๋‹จ์—ด์ธต์˜ ์—ดํŒฝ์ฐฝ ๊ณ„์ˆ˜ ์ฐจ์ด์— ๊ธฐ์ธํ•œ๋‹ค.The heat insulating layer does not need to install a fixture on the outer wall of the tank, and has excellent adhesion to the outer wall of the tank. On the other hand, when thick insulation is required, the smaller the tank, the more corners such as a prismatic shape, the higher the risk of cracking and peeling in the insulation layer. This is due to a temperature gradient of about 200ยฐC across the insulating layer due to the temperature difference between the tank and the outside air when storing liquefied gas in the tank, and the difference in thermal expansion coefficient between the tank and the insulating layer.

๋ณธ ๋ฐœ๋ช…์˜ ์ผ ์ธก๋ฉด์€ ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์˜ ๋‹จ์—ด์ธต์„ ๊ตฌ๋น„ํ•œ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์— ์žˆ์–ด์„œ, ๋‹จ์—ด์ธต์˜ ๊ท ์—ด๊ณผ ๋ฐ•๋ฆฌ ๋ฐœ์ƒ์„ ์–ต์ œํ•  ์ˆ˜ ์žˆ๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ ๋ฐ ์ด์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•์„ ์ œ๊ณตํ•˜๊ณ ์ž ํ•œ๋‹ค.An aspect of the present invention is to provide a storage system capable of suppressing the occurrence of cracks and peeling of the insulation layer in a storage system having a spray-type insulation layer, and a construction method thereof.

๋ณธ ๋ฐœ๋ช…์˜ ์ผ ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์€, ์•กํ™”๊ฐ€์Šค ์ €์žฅ์„ ์œ„ํ•œ ๋‚ด๋ถ€ ๊ณต๊ฐ„์„ ๊ฐ€์ง€๋Š” ํƒฑํฌ์™€, ํƒฑํฌ์˜ ์™ธ๋ฒฝ์˜ ์ ์–ด๋„ ์ผ๋ถ€์— ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋œ ๋ฒ„ํผ์ธต๊ณผ, ๋ฒ„ํผ์ธต์˜ ์™ธ๋ฉด์„ ๋ฎ์œผ๋ฉฐ ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ํ˜•์„ฑ๋œ ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํฌํ•จํ•œ๋‹ค. ๋ฒ„ํผ์ธต์€ ๋ฐœํฌ ๋‹จ์—ด์ธต๋ณด๋‹ค ์–‡๊ณ  ์œ ์—ฐํ•˜๋ฉฐ, ๋ฐœํฌ ๋‹จ์—ด์ธต์˜ ํƒ„์„ฑ๊ณ„์ˆ˜๋ณด๋‹ค ์ž‘์€ ํƒ„์„ฑ๊ณ„์ˆ˜๋ฅผ ๊ฐ€์ง€๋Š” ์žฌ๋ฃŒ๋กœ ํ˜•์„ฑ๋œ๋‹ค.A storage system according to an embodiment of the present invention includes a tank having an inner space for storing liquefied gas, a buffer layer fixed in a non-adhesive state to at least a part of an outer wall of the tank, and a spray method formed by covering the outer surface of the buffer layer. It includes a foam insulation layer. The buffer layer is thinner and more flexible than the foamed insulating layer, and is made of a material having an elastic modulus less than that of the foamed insulating layer.

๋ฒ„ํผ์ธต์€ ๋‹จ์—ด์ธต์„ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. ๋‹จ์—ด์ธต์€ ์†Œํ”„ํŠธ ๋ฐœํฌ ์šฐ๋ ˆํƒ„ ํผ, ์†Œํ”„ํŠธ ๋ฐœํฌ ํด๋ฆฌ์Šคํ‹ฐ๋ Œ, ๋ฉœ๋ผ๋ฏผ ํผ, ๋ฐ ํด๋ฆฌ์—ํ‹ธ๋ Œ ํผ์œผ๋กœ ์ด๋ฃจ์–ด์ง„ ๊ตฐ์—์„œ ์„ ํƒ๋œ ์ ์–ด๋„ ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค.The buffer layer may include a heat insulating layer. The heat insulating layer may include at least one selected from the group consisting of soft foamed urethane foam, soft foamed polystyrene, melamine foam, and polyethylene foam.

๋‹จ์—ด์ธต์˜ ๋‚ด๋ฉด๊ณผ ์™ธ๋ฉด์€ ๊ธˆ์†๋ฐ•ํŒ์œผ๋กœ ๋ฎ์ผ ์ˆ˜ ์žˆ๊ณ , ๋‹จ์—ด์ธต๊ณผ ๊ธˆ์†๋ฐ•ํŒ์ด ๋‹จ์—ด๋ถ€๋ฅผ ๊ตฌ์„ฑํ•  ์ˆ˜ ์žˆ๋‹ค. ๋ฒ„ํผ์ธต์€ ๋‹จ์—ด๋ถ€์˜ ์™ธ๋ฉด์„ ๋ฎ๋Š” ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๋Š” ๊ธ€๋ž˜์Šค ํด๋กœ์Šค(glass cloth)์™€ ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ(glass mesh) ์ค‘ ์–ด๋Š ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค.The inner and outer surfaces of the heat insulating layer may be covered with a thin metal plate, and the heat insulating layer and the thin metal plate may constitute a heat insulating part. The buffer layer may include a first crack barrier covering an outer surface of the heat insulating portion. The first crack barrier may include any one of a glass cloth and a glass mesh.

๋ฒ„ํผ์ธต์€ ์‹œํŠธ ํ˜•ํƒœ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๊ณ , ๊ณ ์ •๊ตฌ์— ์˜ํ•ด ํƒฑํฌ์˜ ์™ธ๋ฒฝ์˜ ์ ์–ด๋„ ์ผ๋ถ€์— ๋ฌผ๋ฆฌ์ ์œผ๋กœ ๊ณ ์ •๋  ์ˆ˜ ์žˆ๋‹ค. ๊ณ ์ •๊ตฌ๋Š”, ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๊ณ ์ •๋˜๋ฉฐ ๋ฒ„ํผ์ธต์„ ๊ด€ํ†ตํ•˜๋Š” ์Šคํ„ฐ๋“œ ๋ณผํŠธ์™€, ๋ฒ„ํผ์ธต ์œ„์—์„œ ์Šคํ„ฐ๋“œ ๋ณผํŠธ์— ์ฒด๊ฒฐ๋œ ๊ณ ์ • ์™€์…”์™€, ๊ณ ์ • ์™€์…” ์œ„์—์„œ ์Šคํ„ฐ๋“œ ๋ณผํŠธ์— ์ฒด๊ฒฐ๋œ ๊ณ ์ • ๋„ˆํŠธ๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค.The buffer layer may be manufactured in the form of a sheet, and may be physically fixed to at least a part of the outer wall of the tank by a fastener. The fixture may include a stud bolt fixed to the outer wall of the tank and passing through the buffer layer, a fixing washer fastened to the stud bolt on the buffer layer, and a fixing nut fastened to the stud bolt on the fixing washer.

๋‹ค๋ฅธ ํ•œํŽธ์œผ๋กœ, ๊ณ ์ •๊ตฌ๋Š”, ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๊ณ ์ •๋˜๋ฉฐ ๋ฒ„ํผ์ธต์„ ๊ด€ํ†ตํ•˜๋Š” ์Šคํ„ฐ๋“œ ํ•€๊ณผ, ๋ฒ„ํผ์ธต ์œ„์—์„œ ์Šคํ„ฐ๋“œ ํ•€์— ์ฒด๊ฒฐ๋œ ๊ณ ์ • ์™€์…”๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. ์Šคํ„ฐ๋“œ ํ•€์€ ๋ฒ„ํผ์ธต๊ณผ ๊ณ ์ • ์™€์…”๋ฅผ ๊ด€ํ†ตํ•˜๋Š” ์ˆ˜์ง๋ถ€์™€, ์ˆ˜์ง๋ถ€๋กœ๋ถ€ํ„ฐ ์ ˆ๊ณก๋˜์–ด ๊ณ ์ • ์™€์…”์˜ ์œ—๋ฉด์— ๋ฐ€์ฐฉ๋œ ์ˆ˜ํ‰๋ถ€๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค.On the other hand, the fixture may include a stud pin fixed to an outer wall of the tank and passing through the buffer layer, and a fixing washer fastened to the stud pin on the buffer layer. The stud pin may include a vertical portion passing through the buffer layer and the fixing washer, and a horizontal portion bent from the vertical portion and in close contact with the upper surface of the fixing washer.

๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์€ ๋ฐœํฌ ๋‹จ์—ด์ธต์˜ ์™ธ๋ฉด์„ ๋ฎ๋Š” ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต์„ ๋” ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. ๋ฐœํฌ ๋‹จ์—ด์ธต๊ณผ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต์€ ์ด์Œ๋งค๊ฐ€ ์—†๋Š” ๋‹จ์ผ ๊ตฌ์กฐ๋ฅผ ์ด๋ฃฐ ์ˆ˜ ์žˆ๋‹ค. ๋ฐœํฌ ๋‹จ์—ด์ธต์˜ ๋‚ด๋ถ€์— ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๊ฐ€ ์œ„์น˜ํ•  ์ˆ˜ ์žˆ๋‹ค. ์ œ2 ํฌ๋ž™ ๋ฒ ๋ฆฌ์–ด๋Š” ๊ธ€๋ž˜์Šค ํด๋กœ์Šค, ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ, ๊ธˆ์† ๋งคํŠธ๋ฆญ์Šค(metal matrix) ์ค‘ ์ ์–ด๋„ ์–ด๋Š ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค.The containment system may further include a flexible protective layer covering the outer surface of the foamed insulating layer. The foam insulation layer and the flexible protective layer can form a seamless single structure. A second crack barrier may be located inside the foam insulation layer. The second crack barrier may include at least one of a glass cloth, a glass mesh, and a metal matrix.

๋ณธ ๋ฐœ๋ช…์˜ ์ผ ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•์€, ์•กํ™”๊ฐ€์Šค ์ €์žฅ์„ ์œ„ํ•œ ํƒฑํฌ๋ฅผ ์ œ๊ณตํ•˜๋Š” ๋‹จ๊ณ„์™€, ํƒฑํฌ์˜ ์™ธ๋ฒฝ์˜ ์ ์–ด๋„ ์ผ๋ถ€์— ๊ณ ์ •๊ตฌ๋ฅผ ์ด์šฉํ•˜์—ฌ ๋ฒ„ํผ์ธต์„ ๊ณ ์ •์‹œํ‚ค๋Š” ๋‹จ๊ณ„์™€, ๋ฒ„ํผ์ธต์˜ ์™ธ๋ฉด์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๋‹จ๊ณ„๋ฅผ ํฌํ•จํ•œ๋‹ค. ๋ฒ„ํผ์ธต์€ ๋ฐœํฌ ๋‹จ์—ด์ธต๋ณด๋‹ค ์–‡๊ณ  ์œ ์—ฐํ•˜๋ฉฐ, ๋ฐœํฌ ๋‹จ์—ด์ธต์˜ ํƒ„์„ฑ๊ณ„์ˆ˜๋ณด๋‹ค ์ž‘์€ ํƒ„์„ฑ๊ณ„์ˆ˜๋ฅผ ๊ฐ€์ง€๋Š” ์žฌ๋ฃŒ๋กœ ํ˜•์„ฑ๋œ๋‹ค.A method of constructing a containment system according to an embodiment of the present invention includes providing a tank for storing liquefied gas, fixing a buffer layer using a fixture on at least a portion of an outer wall of the tank, and spraying the outer surface of the buffer layer. And forming a foam insulation layer in a manner. The buffer layer is thinner and more flexible than the foamed insulating layer, and is made of a material having an elastic modulus less than that of the foamed insulating layer.

๋ฒ„ํผ์ธต์€ ๊ธธ๋‹ค๋ž€ ์‹œํŠธ๊ฐ€ ๋‘ฅ๊ธ€๊ฒŒ ๋ง๋ฆฐ ๋กค ํ˜•ํƒœ๋กœ ์ œ์ž‘๋˜์–ด ํƒฑํฌ์˜ ์™ธ๋ฒฝ์œผ๋กœ ์ด์†ก๋  ์ˆ˜ ์žˆ๊ณ , ๋กค์—์„œ ์‹œํŠธ๊ฐ€ ํ’€๋ฆฌ๋ฉด์„œ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ์ˆœ์ฐจ์ ์œผ๋กœ ๋ฐฐ์น˜๋  ์ˆ˜ ์žˆ๋‹ค. ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๋ฐฐ์น˜๋œ ๋ฒ„ํผ์ธต์€ ๋‘ ๊ฒน์˜ ์‹œํŠธ๊ฐ€ ์ค‘์ฒฉ๋œ ์˜ค๋ฒ„๋žฉ ์˜์—ญ์„ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. The buffer layer may be manufactured in a roll form in which a long sheet is rolled and transferred to the outer wall of the tank, and may be sequentially disposed on the outer wall of the tank while the sheet is released from the roll. The buffer layer disposed on the outer wall of the tank may include an overlap region in which two layers of sheets are overlapped.

๋ฒ„ํผ์ธต์€ ๊ณ ์ •๊ตฌ์— ์˜ํ•ด ํƒฑํฌ์˜ ์ ์–ด๋„ ์ผ๋ถ€์— ๋ฌผ๋ฆฌ์ ์œผ๋กœ ๊ณ ์ •๋  ์ˆ˜ ์žˆ๊ณ , ๋ฌผ๋ฆฌ์ ์œผ๋กœ ๊ณ ์ •๋œ ๋ฒ„ํผ์ธต ๊ฐ€์šด๋ฐ ๊ณ ์ •๊ตฌ์™€ ๊ฒน์น˜์ง€ ์•Š๋Š” ๋ถ€๋ถ„์€ ํƒฑํฌ์˜ ์™ธ๋ฒฝ๊ณผ ๋น„์ ‘์ฐฉ ์ƒํƒœ๋ฅผ ์œ ์ง€ํ•  ์ˆ˜ ์žˆ๋‹ค.The buffer layer may be physically fixed to at least a portion of the tank by means of a fastener, and a portion of the physically fixed buffer layer that does not overlap with the fastener may maintain a non-adhesion state with the outer wall of the tank.

๊ณ ์ •๊ตฌ๋Š” ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๊ณ ์ •๋œ ์Šคํ„ฐ๋“œ ๋ณผํŠธ๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. ๋ฒ„ํผ์ธต์ด ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๋ฐฐ์น˜๋  ๋•Œ ์Šคํ„ฐ๋“œ ๋ณผํŠธ๊ฐ€ ๋ฒ„ํผ์ธต์„ ๊ด€ํ†ตํ•  ์ˆ˜ ์žˆ๊ณ , ์Šคํ„ฐ๋“œ ๋ณผํŠธ์— ๊ณ ์ • ์™€์…”์™€ ๊ณ ์ • ๋„ˆํŠธ๊ฐ€ ์ˆœ์ฐจ์ ์œผ๋กœ ์ฒด๊ฒฐ๋  ์ˆ˜ ์žˆ๋‹ค.The fixture may include stud bolts fixed to the outer wall of the tank. When the buffer layer is disposed on the outer wall of the tank, the stud bolt may pass through the buffer layer, and the fixing washer and the fixing nut may be sequentially fastened to the stud bolt.

๋‹ค๋ฅธ ํ•œํŽธ์œผ๋กœ, ๊ณ ์ •๊ตฌ๋Š” ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๊ณ ์ •๋œ ์Šคํ„ฐ๋“œ ํ•€์„ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. ๋ฒ„ํผ์ธต์ด ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๋ฐฐ์น˜๋  ๋•Œ ์Šคํ„ฐ๋“œ ํ•€์ด ๋ฒ„ํผ์ธต์„ ๊ด€ํ†ตํ•  ์ˆ˜ ์žˆ๊ณ , ์Šคํ„ฐ๋“œ ํ•€์— ๊ณ ์ • ์™€์…”๊ฐ€ ์ฒด๊ฒฐ๋  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ์Šคํ„ฐ๋“œ ํ•€์ด ์ ˆ๊ณก๋˜์–ด ์Šคํ„ฐ๋“œ ํ•€์˜ ์ผ๋ถ€๊ฐ€ ๊ณ ์ • ์™€์…”์˜ ์œ—๋ฉด์— ๋ฐ€์ฐฉ๋  ์ˆ˜ ์žˆ๋‹ค.On the other hand, the fixture may comprise a stud pin fixed to the outer wall of the tank. When the buffer layer is disposed on the outer wall of the tank, the stud pin may penetrate the buffer layer, the fixing washer may be fastened to the stud pin, and the stud pin may be bent so that a part of the stud pin may be in close contact with the upper surface of the fixing washer.

๋ฒ„ํผ์ธต์€ ํƒฑํฌ์™€ ๋งˆ์ฃผํ•˜๋Š” ๋‹จ์—ด๋ถ€์™€, ๋‹จ์—ด๋ถ€์˜ ์™ธ๋ฉด์„ ๋ฎ๋Š” ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. ๋‹จ์—ด๋ถ€๋Š”, ์†Œํ”„ํŠธ ๋ฐœํฌ ์šฐ๋ ˆํƒ„ ํผ, ์†Œํ”„ํŠธ ๋ฐœํฌ ํด๋ฆฌ์Šคํ‹ฐ๋ Œ, ๋ฉœ๋ผ๋ฏผ ํผ, ๋ฐ ํด๋ฆฌ์—ํ‹ธ๋ Œ ํผ์œผ๋กœ ์ด๋ฃจ์–ด์ง„ ๊ตฐ์—์„œ ์„ ํƒ๋œ ์ ์–ด๋„ ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•˜๋Š” ๋‹จ์—ด์ธต๊ณผ, ๋‹จ์—ด์ธต์˜ ๋‚ด๋ฉด๊ณผ ์™ธ๋ฉด์„ ๋ฎ๋Š” ๊ธˆ์†๋ฐ•ํŒ์„ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๋Š” ๊ธ€๋ž˜์Šค ํด๋กœ์Šค์™€ ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ ์ค‘ ์–ด๋Š ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค.The buffer layer may include a heat insulating part facing the tank and a first crack barrier covering an outer surface of the heat insulating part. The heat insulating part may include a heat insulating layer including at least one selected from the group consisting of soft foamed urethane foam, soft foamed polystyrene, melamine foam, and polyethylene foam, and a metal thin plate covering the inner and outer surfaces of the heat insulating layer. The first crack barrier may include any one of a glass cloth and a glass mesh.

๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๋‹จ๊ณ„๋Š”, ๋ฒ„ํผ์ธต ์œ„์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๊ณ , ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต ์œ„์— ๊ธ€๋ž˜์Šค ํด๋กœ์Šค์™€ ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ ์ค‘ ์–ด๋Š ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•˜๋Š” ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๋ฅผ ๋ฐฐ์น˜ํ•˜๋ฉฐ, ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด ์œ„์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ์ œ2 ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๊ณผ์ •์„ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค.In the forming of the foam insulation layer, a first foam insulation layer is formed on the buffer layer by a spray method, a second crack barrier including any one of a glass cloth and a glass mesh is disposed on the first foam insulation layer, and on the second crack barrier It may include a process of forming the second foam insulation layer by a spray method.

๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•์€, ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๋‹จ๊ณ„ ์ดํ›„, ๋ฐœํฌ ๋‹จ์—ด์ธต ์œ„์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๋‹จ๊ณ„๋ฅผ ๋” ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค.The construction method of the containment system may further include forming a flexible protective layer on the foamed insulating layer by spraying after forming the foamed insulating layer.

๋ณธ ๋ฐœ๋ช…์˜ ์ผ ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์€ ๋น ๋ฅด๊ณ  ๊ฐ„ํŽธํ•œ ์‹œ๊ณต์ด ๊ฐ€๋Šฅํ•˜๊ณ , ์‹œ๊ณต ๋น„์šฉ์ด ๋‚ฎ์•„ ๊ฒฝ์ œ์„ฑ์ด ๋†’๋‹ค. ๋˜ํ•œ, ๊ธฐ๊ณ„์  ๊ณ ์ •์„ ์ตœ์†Œํ™”ํ•˜์—ฌ ๋‹ค์–‘ํ•œ ํ˜•์ƒ์˜ ํƒฑํฌ์— ์ ์šฉ ๊ฐ€๋Šฅํ•˜๊ณ , ๋ฐœํฌ ๋‹จ์—ด์ธต์˜ ๊ท ์—ด๊ณผ ๋ฐ•๋ฆฌ๋ฅผ ํšจ๊ณผ์ ์œผ๋กœ ์–ต์ œํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ๊ทน๋‹จ์ ์ธ ์˜จ๋„ ๋ณ€ํ™”์— ๊ฒฌ๋”œ ์ˆ˜ ์žˆ์–ด ์šด์šฉ ์ƒ์˜ ์ž์œ ๋„๊ฐ€ ๋†’๋‹ค.The storage system according to an embodiment of the present invention enables quick and simple construction, and low construction cost and high economical efficiency. In addition, it can be applied to tanks of various shapes by minimizing mechanical fixation, can effectively suppress cracking and peeling of the foamed insulation layer, and can withstand extreme temperature changes, so the degree of freedom in operation is high.

๋„ 1์€ ๋ณธ ๋ฐœ๋ช…์˜ ์ œ1 ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ๋ถ€๋ถ„ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค.1 is a partially enlarged cross-sectional view of a storage system according to a first embodiment of the present invention.

๋„ 2๋Š” ๋„ 1์— ๋„์‹œํ•œ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ ์ค‘ ๋ฒ„ํผ์ธต์˜ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค.2 is an enlarged cross-sectional view of a buffer layer in the storage system shown in FIG. 1.

๋„ 3์€ ๊ตด๊ณก๋ถ€์— ํ•ด๋‹นํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ๋ถ€๋ถ„ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค.3 is a partially enlarged cross-sectional view of the containment system corresponding to the bent portion.

๋„ 4์™€ ๋„ 5๋Š” ๋ณธ ๋ฐœ๋ช…์˜ ์ œ2 ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ๋ถ€๋ถ„ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค.4 and 5 are partially enlarged cross-sectional views of a containment system according to a second embodiment of the present invention.

๋„ 6์€ ๋ณธ ๋ฐœ๋ช…์˜ ์ œ3 ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ ์ค‘ ๋ฒ„ํผ์ธต๊ณผ ๊ณ ์ •๊ตฌ์˜ ๋ถ€๋ถ„ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค.6 is a partially enlarged cross-sectional view of a buffer layer and a fixture in the storage system according to the third embodiment of the present invention.

๋„ 7์€ ๋ณธ ๋ฐœ๋ช…์˜ ์ผ ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•์„ ๋‚˜ํƒ€๋‚ธ ์ˆœ์„œ๋„์ด๋‹ค.7 is a flow chart showing a construction method of the storage system according to an embodiment of the present invention.

๋„ 8๊ณผ ๋„ 9๋Š” ๋„ 7์— ๋„์‹œํ•œ ์ œ1 ๋‹จ๊ณ„์™€ ์ œ2 ๋‹จ๊ณ„๋ฅผ ์„ค๋ช…ํ•˜๊ธฐ ์œ„ํ•ด ๋„์‹œํ•œ ํƒฑํฌ์˜ ๊ฐœ๋žต๋„์ด๋‹ค.8 and 9 are schematic diagrams of a tank shown to explain the first and second steps shown in FIG. 7.

๋„ 10๊ณผ ๋„ 11์€ ๋„ 7์— ๋„์‹œํ•œ ์ œ2 ๋‹จ๊ณ„๋ฅผ ์„ค๋ช…ํ•˜๊ธฐ ์œ„ํ•œ ๋ฒ„ํผ์ธต๊ณผ ๊ณ ์ •๊ตฌ์˜ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค.10 and 11 are enlarged cross-sectional views of a buffer layer and a fixture for explaining the second step shown in FIG. 7.

๋„ 12๋Š” ๋„ 7์— ๋„์‹œํ•œ ์ œ4 ๋‹จ๊ณ„ ์ดํ›„ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์„ ๋„์‹œํ•œ ๊ฐœ๋žต๋„์ด๋‹ค.12 is a schematic diagram showing the storage system after the fourth step shown in FIG. 7.

์ดํ•˜, ์ฒจ๋ถ€ํ•œ ๋„๋ฉด์„ ์ฐธ๊ณ ๋กœ ํ•˜์—ฌ ๋ณธ ๋ฐœ๋ช…์˜ ์‹ค์‹œ์˜ˆ์— ๋Œ€ํ•˜์—ฌ ๋ณธ ๋ฐœ๋ช…์ด ์†ํ•˜๋Š” ๊ธฐ์ˆ  ๋ถ„์•ผ์—์„œ ํ†ต์ƒ์˜ ์ง€์‹์„ ๊ฐ€์ง„ ์ž๊ฐ€ ์šฉ์ดํ•˜๊ฒŒ ์‹ค์‹œํ•  ์ˆ˜ ์žˆ๋„๋ก ์ƒ์„ธํžˆ ์„ค๋ช…ํ•œ๋‹ค. ๋ณธ ๋ฐœ๋ช…์€ ์—ฌ๋Ÿฌ ๊ฐ€์ง€ ์ƒ์ดํ•œ ํ˜•ํƒœ๋กœ ๊ตฌํ˜„๋  ์ˆ˜ ์žˆ์œผ๋ฉฐ ์—ฌ๊ธฐ์—์„œ ์„ค๋ช…ํ•˜๋Š” ์‹ค์‹œ์˜ˆ์— ํ•œ์ •๋˜์ง€ ์•Š๋Š”๋‹ค.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein.

๋„๋ฉด์—์„œ ๋ณธ ๋ฐœ๋ช…์„ ๋ช…ํ™•ํ•˜๊ฒŒ ์„ค๋ช…ํ•˜๊ธฐ ์œ„ํ•ด์„œ ์„ค๋ช…๊ณผ ๊ด€๊ณ„์—†๋Š” ๋ถ€๋ถ„์€ ์ƒ๋žตํ•˜์˜€์œผ๋ฉฐ, ๋ช…์„ธ์„œ ์ „์ฒด๋ฅผ ํ†ตํ•˜์—ฌ ๋™์ผ ๋˜๋Š” ์œ ์‚ฌํ•œ ๊ตฌ์„ฑ์š”์†Œ์— ๋Œ€ํ•ด์„œ๋Š” ๋™์ผํ•œ ์ฐธ์กฐ๋ถ€ํ˜ธ๋ฅผ ๋ถ™์˜€๋‹ค.In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and the same reference numerals are assigned to the same or similar components throughout the specification.

๋˜ํ•œ, ๋„๋ฉด์—์„œ ๋‚˜ํƒ€๋‚œ ๊ฐ ๊ตฌ์„ฑ์˜ ํฌ๊ธฐ ๋ฐ ๋‘๊ป˜๋Š” ์„ค๋ช…์˜ ํŽธ์˜๋ฅผ ์œ„ํ•ด ์ž„์˜๋กœ ๋‚˜ํƒ€๋‚ด์—ˆ์œผ๋ฏ€๋กœ, ๋ณธ ๋ฐœ๋ช…์ด ๋ฐ˜๋“œ์‹œ ๋„์‹œ๋œ ๋ฐ”์— ํ•œ์ •๋˜์ง€ ์•Š๋Š”๋‹ค.In addition, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, so the present invention is not necessarily limited to the illustrated bar.

๋ช…์„ธ์„œ ์ „์ฒด์—์„œ, ์–ด๋–ค ๋ถ€๋ถ„์ด ๋‹ค๋ฅธ ๋ถ€๋ถ„๊ณผ "์—ฐ๊ฒฐ"๋˜์–ด ์žˆ๋‹ค๊ณ  ํ•  ๋•Œ, ์ด๋Š” "์ง์ ‘์ ์œผ๋กœ ์—ฐ๊ฒฐ"๋˜์–ด ์žˆ๋Š” ๊ฒฝ์šฐ๋ฟ ๋งŒ ์•„๋‹ˆ๋ผ, ๋‹ค๋ฅธ ๋ถ€์žฌ๋ฅผ ์‚ฌ์ด์— ๋‘๊ณ  "๊ฐ„์ ‘์ ์œผ๋กœ ์—ฐ๊ฒฐ"๋œ ๊ฒƒ๋„ ํฌํ•จํ•œ๋‹ค. ๋˜ํ•œ, ์–ด๋–ค ๋ถ€๋ถ„์ด ์–ด๋–ค ๊ตฌ์„ฑ์š”์†Œ๋ฅผ "ํฌํ•จ"ํ•œ๋‹ค๊ณ  ํ•  ๋•Œ, ์ด๋Š” ํŠน๋ณ„ํžˆ ๋ฐ˜๋Œ€๋˜๋Š” ๊ธฐ์žฌ๊ฐ€ ์—†๋Š” ํ•œ ๋‹ค๋ฅธ ๊ตฌ์„ฑ์š”์†Œ๋ฅผ ์ œ์™ธํ•˜๋Š” ๊ฒƒ์ด ์•„๋‹ˆ๋ผ ๋‹ค๋ฅธ ๊ตฌ์„ฑ์š”์†Œ๋ฅผ ๋” ํฌํ•จํ•  ์ˆ˜ ์žˆ๋Š” ๊ฒƒ์„ ์˜๋ฏธํ•œ๋‹ค.Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case of being "directly connected" but also "indirectly connected" with another member therebetween. In addition, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary.

๋„ 1์€ ๋ณธ ๋ฐœ๋ช…์˜ ์ œ1 ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ๋ถ€๋ถ„ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๊ณ , ๋„ 2๋Š” ๋„ 1์— ๋„์‹œํ•œ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ ์ค‘ ๋ฒ„ํผ์ธต์˜ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค.1 is a partially enlarged cross-sectional view of a storage system according to a first embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of a buffer layer in the storage system shown in FIG. 1.

๋„ 1๊ณผ ๋„ 2๋ฅผ ์ฐธ๊ณ ํ•˜๋ฉด, ์ œ1 ์‹ค์‹œ์˜ˆ์˜ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100)์€ ์•กํ™”๊ฐ€์Šค๋ฅผ ์ €์žฅํ•˜๋Š” ํƒฑํฌ(10)์™€, ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์— ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋œ ๋ฒ„ํผ์ธต(20)๊ณผ, ๋ฒ„ํผ์ธต(20)์˜ ์™ธ๋ฉด์„ ๋ฎ๋Š” ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์„ ํฌํ•จํ•œ๋‹ค.1 and 2, the storage system 100 of the first embodiment includes a tank 10 for storing liquefied gas, a buffer layer 20 fixed to the outer wall of the tank 10 in a non-adhesive state, and a buffer layer. It includes a foam insulation layer 30 covering the outer surface of (20).

ํƒฑํฌ(10)๋Š” ๊ตฌํ˜•(spherical type), ์›ํ†ตํ˜•(cylindrical type), ๊ฐ๊ธฐ๋‘ฅํ˜•(prismatic type) ๋“ฑ ๋‹ค์–‘ํ•œ ํ˜•์ƒ์œผ๋กœ ์ด๋ฃจ์–ด์งˆ ์ˆ˜ ์žˆ๊ณ , ์•Œ๋ฃจ๋ฏธ๋Š„, ์Šคํ…Œ์ธ๋ฆฌ์Šค ๊ฐ•, ๊ฐ• ํ•ฉ๊ธˆ ๋“ฑ์˜ ๊ธˆ์†์œผ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๋‹ค. ์•กํ™”๊ฐ€์Šค๋Š” ํƒฑํฌ(10)์˜ ๋ฐ€ํ๋œ ๋‚ด๋ถ€ ๊ณต๊ฐ„์— ์ €์žฅ๋œ๋‹ค.The tank 10 may have various shapes such as a spherical type, a cylindrical type, and a prismatic type, and may be made of metal such as aluminum, stainless steel, and steel alloy. The liquefied gas is stored in the sealed inner space of the tank 10.

๋ฒ„ํผ์ธต(20)์€ ํƒฑํฌ(10)์™€ ๋งˆ์ฃผํ•˜๋Š” ๋‹จ์—ด๋ถ€(21)์™€, ๋‹จ์—ด๋ถ€(21)์˜ ์™ธ๋ฉด์„ ๋ฎ๋Š” ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(22)๋ฅผ ํฌํ•จํ•œ๋‹ค. ๋‹จ์—ด๋ถ€(21)๋Š” ๋‹จ์—ด์ธต(211)๊ณผ, ๋‹จ์—ด์ธต(211)์˜ ์–‘๋ฉด์„ ๋ฎ๋Š” ๊ธˆ์†๋ฐ•ํŒ(212)์„ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค.The buffer layer 20 includes an insulating portion 21 facing the tank 10 and a crack barrier 22 covering the outer surface of the insulating portion 21. The heat insulating part 21 may include a heat insulating layer 211 and a thin metal plate 212 covering both surfaces of the heat insulating layer 211.

๋‹จ์—ด์ธต(211)์€ ์†Œํ”„ํŠธ ๋ฐœํฌ ์šฐ๋ ˆํƒ„ ํผ, ์†Œํ”„ํŠธ ๋ฐœํฌ ํด๋ฆฌ์Šคํ‹ฐ๋ Œ, ๋ฉœ๋ผ๋ฏผ ํผ, ํด๋ฆฌ์—ํ‹ธ๋ Œ ํผ ์ค‘ ์ ์–ด๋„ ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๊ณ , ๊ธˆ์†๋ฐ•ํŒ(212)์€ ์•Œ๋ฃจ๋ฏธ๋Š„ ๋ฐ•ํŒ์ผ ์ˆ˜ ์žˆ์œผ๋ฉฐ, ๋ณด๋‹ค ๋ฐ”๋žŒ์งํ•˜๊ฒŒ๋Š” ์•Œ๋ฃจ๋ฏธ๋Š„ ๋ฐ•ํŒ์— ํ™”์ด๋ฐ”๊ธ€๋ผ์Šค๊ฐ€ ์ ‘์ฐฉ๋œ ๋ฐ•ํŒ(ALGC, Aluminium & Glass-Cloth)์ผ ์ˆ˜ ์žˆ๋‹ค. ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(22)๋Š” ๊ธ€๋ž˜์Šค ํด๋กœ์Šค(glass cloth)์™€ ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ(glass mesh) ์ค‘ ์ ์–ด๋„ ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค.The insulating layer 211 may include at least one of soft foamed urethane foam, soft foamed polystyrene, melamine foam, and polyethylene foam, and the metal thin plate 212 may be an aluminum thin plate, and more preferably, fiberglass is adhered to the aluminum thin plate. It may be a thin plate (ALGC, Aluminum & Glass-Cloth). The crack barrier 22 may include at least one of a glass cloth and a glass mesh.

๋ฒ„ํผ์ธต(20)์€ ์‹œํŠธ(sheet) ํ˜•ํƒœ๋กœ ๋ฏธ๋ฆฌ ์ œ์ž‘๋˜๊ณ , ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์—์„œ ์ ‘์ฐฉ์ œ์™€ ๊ฐ™์€ ์ ‘์ฐฉ ์ˆ˜๋‹จ ์—†์ด ๊ณ ์ •๊ตฌ(40)์— ์˜ํ•ด ๋ฌผ๋ฆฌ์ ์œผ๋กœ ๊ณ ์ •๋œ๋‹ค. ๊ณ ์ •๊ตฌ(40)๋Š” ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41)์™€ ์ ์–ด๋„ ํ•˜๋‚˜์˜ ๊ณ ์ • ์™€์…”(42) ๋ฐ ๊ณ ์ • ๋„ˆํŠธ(43)์˜ ์กฐํ•ฉ์œผ๋กœ ๊ตฌ์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค.The buffer layer 20 is manufactured in advance in the form of a sheet, and is physically fixed on the outer wall of the tank 10 by the fixture 40 without an adhesive means such as an adhesive. The fixture 40 may be composed of a combination of a stud bolt 41 and at least one fixing washer 42 and a fixing nut 43.

์˜ˆ๋ฅผ ๋“ค์–ด, ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41)๋Š” ์šฉ์ ‘ ๋“ฑ์˜ ๋ฐฉ๋ฒ•์œผ๋กœ ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์— ๊ณ ์ •๋˜๋ฉฐ, ๋ฒ„ํผ์ธต(20)์„ ๊ด€ํ†ตํ•œ๋‹ค. ์ œ1 ๊ณ ์ • ์™€์…”(421)๋Š” ๋ฒ„ํผ์ธต(20) ์œ„์—์„œ ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41)์— ์ฒด๊ฒฐ๋˜๊ณ , ์ œ1 ๊ณ ์ • ์™€์…”(421) ์œ„์— ์ œ2 ๊ณ ์ • ์™€์…”(422)์™€ ๊ณ ์ • ๋„ˆํŠธ(43)๊ฐ€ ์ฐจ๋ก€๋กœ ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41)์— ์ฒด๊ฒฐ๋œ๋‹ค. ๊ณ ์ • ๋„ˆํŠธ(43)์˜ ์ฒด๊ฒฐ๋ ฅ์— ์˜ํ•ด ์ œ1 ๊ณ ์ • ์™€์…”(421)๊ฐ€ ๋ฒ„ํผ์ธต(20)์„ ๊ฐ•ํ•˜๊ฒŒ ๋ˆ„๋ฅด๋ฉด์„œ ๋ฒ„ํผ์ธต(20)์„ ํƒฑํฌ(10)์— ๊ฒฌ๊ณ ํ•˜๊ฒŒ ๊ณ ์ •์‹œํ‚จ๋‹ค.For example, the stud bolt 41 is fixed to the outer wall of the tank 10 by welding or the like, and penetrates the buffer layer 20. The first fixing washer 421 is fastened to the stud bolt 41 on the buffer layer 20, and the second fixing washer 422 and the fixing nut 43 are sequentially placed on the first fixing washer 421 and the stud bolt 41 Is fastened to. The first fixing washer 421 strongly presses the buffer layer 20 by the fastening force of the fixing nut 43 and firmly fixes the buffer layer 20 to the tank 10.

์ œ1 ๊ณ ์ • ์™€์…”(421)๋Š” ์šฐ๋ ˆํƒ„ ๊ณ ๋ฌด์™€ ํ•ฉํŒ ๋ฐ ํ”Œ๋ผ์Šคํ‹ฑ ์ค‘ ์–ด๋Š ํ•˜๋‚˜๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๊ณ , ๋ฒ„ํผ์ธต(20)๊ณผ ์ถฉ๋ถ„ํ•œ ์ ‘์ด‰ ๋ฉด์ ์„ ํ™•๋ณดํ•˜๋„๋ก ๋น„๊ต์  ํฐ ์ง๊ฒฝ์œผ๋กœ ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค. ์ œ2 ๊ณ ์ • ์™€์…”(422)๋Š” ๊ธˆ์†์œผ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๊ณ , ์ œ1 ๊ณ ์ • ์™€์…”(421)๋ณด๋‹ค ์ž‘์€ ํฌ๊ธฐ๋กœ ํ˜•์„ฑ๋œ๋‹ค. ์ œ2 ๊ณ ์ • ์™€์…”(422)๋Š” ๊ฐ•๋„ ๋ณด๊ฐ•์šฉ์œผ๋กœ์„œ, ์ œ1 ๊ณ ์ • ์™€์…”(421)์˜ ๊นจ์ง๊ณผ ๊ฐ™์€ ํŒŒ์†์˜ ์šฐ๋ ค๊ฐ€ ์žˆ์„ ๋•Œ ์„ ํƒ์ ์œผ๋กœ ์‚ฌ์šฉ๋  ์ˆ˜ ์žˆ๋‹ค.The first fixing washer 421 may be made of one of urethane rubber, plywood, and plastic, and may have a relatively large diameter to secure a sufficient contact area with the buffer layer 20. The second fixing washer 422 may be made of metal, and has a size smaller than that of the first fixing washer 421. The second fixing washer 422 is for reinforcing strength, and may be selectively used when there is a risk of damage such as cracking of the first fixing washer 421.

๊ณ ์ •๊ตฌ(40)๋Š” ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์— ์„œ๋กœ๊ฐ„ ๊ฑฐ๋ฆฌ๋ฅผ ๋‘๊ณ  ๋ณต์ˆ˜ ๊ฐœ๋กœ ๊ตฌ๋น„๋œ๋‹ค. ํŽธ์˜์ƒ ๋„ 1์—์„œ๋Š” ํ•˜๋‚˜์˜ ๊ณ ์ •๊ตฌ(40)๋ฅผ ๋„์‹œํ•˜์˜€๋‹ค. ๋ฒ„ํผ์ธต(20)์€ ๊ณ ์ •๊ตฌ(40)๊ฐ€ ๋ˆ„๋ฅด๋Š” ๋ฌผ๋ฆฌ์ ์ธ ํž˜์— ์˜ํ•ด ์œ„์น˜ ๊ณ ์ •์ด ์ด๋ฃจ์–ด์ง€๋ฉฐ, ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์˜ ์ ์–ด๋„ ์ผ๋ถ€์— ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ฒฌ๊ณ ํ•˜๊ฒŒ ๊ณ ์ •๋œ๋‹ค. ์ด๋•Œ '๋น„์ ‘์ฐฉ'์€ ํ™”ํ•™์ ์ธ ์ ‘์ฐฉ ์ˆ˜๋‹จ์ด ๋ฐฐ์ œ๋œ ๊ฒƒ์„ ์˜๋ฏธํ•œ๋‹ค.A plurality of fasteners 40 are provided on the outer wall of the tank 10 at a distance from each other. For convenience, one fixture 40 is illustrated in FIG. 1. The buffer layer 20 is fixed in position by a physical force pressed by the fixture 40, and is firmly fixed to at least a portion of the outer wall of the tank 10 in a non-adhesive state. At this time,'non-adhesive' means that chemical bonding means is excluded.

ํ•œํŽธ, ๋ณธ ๋ฐœ๋ช…์˜ ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅด๋ฉด, ๋ฒ„ํผ์ธต(20)์ด ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ ์ „์ฒด์— ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋  ์ˆ˜ ์žˆ์ง€๋งŒ, ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ ์ผ๋ถ€์—๋งŒ ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋˜๋ฉด์„œ ๋‚˜๋จธ์ง€ ์ผ๋ถ€์—๋Š” ์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋  ์ˆ˜๋„ ์žˆ๋‹ค. ์ฆ‰, ๋ณธ ๋ฐœ๋ช…์˜ ์‹ค์‹œ์˜ˆ๋Š” ๋ฒ„ํผ์ธต(20)์ด ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ ์ „์ฒด์— ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋œ ๊ฒฝ์šฐ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ, ๋ฒ„ํผ์ธต(20)์ด ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ ์ผ๋ถ€์— ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋œ ๊ฒฝ์šฐ๋„ ํฌํ•จํ•œ๋‹ค. On the other hand, according to the embodiment of the present invention, the buffer layer 20 may be fixed to the entire outer wall of the tank 10 in a non-adhesive state, but only a portion of the outer wall of the tank 10 is fixed in a non-adhesive state and adhered to the rest It can also be fixed in the state. That is, in the embodiment of the present invention, not only the case where the buffer layer 20 is fixed to the entire outer wall of the tank 10 in a non-adhesive state, but also the buffer layer 20 is fixed to a part of the outer wall of the tank 10 in a non-adhesive state. Includes cases.

๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ํ˜•์„ฑ๋˜๋ฉฐ, ๋ณ„๋„์˜ ์ ‘์ฐฉ ์ˆ˜๋‹จ ์—†์ด ๋ฒ„ํผ์ธต(20)์˜ ์™ธ๋ฉด์— ๊ณ ์ •๋œ๋‹ค. ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ํด๋ฆฌ์šฐ๋ ˆํƒ„์„ ํฌํ•จํ•  ์ˆ˜ ์žˆ๊ณ , ๊ณ ์ •๊ตฌ(40)์™€ ๋ฒ„ํผ์ธต(20)์˜ ์™ธ๋ฉด์— ์Šคํ”„๋ ˆ์ด ๊ฑด(spray gun)์œผ๋กœ ํด๋ฆฌ์˜ฌ(polyol)๊ณผ ์ด์†Œ์‹œ์•„๋„ค์ดํŠธ(isocyanate)๋ฅผ ํ˜ผํ•ฉ ๋ถ„์‚ฌํ•˜๋Š” ๋ฐฉ๋ฒ•์œผ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๋‹ค.The foam insulation layer 30 is formed by a spray method, and is fixed to the outer surface of the buffer layer 20 without a separate adhesive means. The foam insulation layer 30 may include polyurethane, and will be produced by mixing and spraying polyol and isocyanate with a spray gun on the outer surfaces of the fixture 40 and the buffer layer 20. I can.

ํด๋ฆฌ์˜ฌ๊ณผ ์ด์†Œ์‹œ์•„๋„ค์ดํŠธ๋Š” ๊ฐ์ž์˜ ์ปจํ…Œ์ด๋„ˆ์— ๋‹ด๊ฒจ ์žˆ๋‹ค๊ฐ€ ํ˜ธ์Šค๋ฅผ ํ†ตํ•ด ์Šคํ”„๋ ˆ์ด ๊ฑด์œผ๋กœ ํŽŒํ•‘๋˜์–ด ํ˜ผํ•ฉ๋˜๋ฉฐ, ์ด๋“ค์˜ ํ˜ผํ•ฉ๋ฌผ์ด ๋ฒ„ํผ์ธต(20)์˜ ์™ธ๋ฉด์— ๋ถ„์‚ฌ๋œ๋‹ค. ๋ถ„์‚ฌ๋œ ํ˜ผํ•ฉ๋ฌผ์€ ๋ฒ„ํผ์ธต(20)์˜ ์™ธ๋ฉด์— ๋‹ฌ๋ผ ๋ถ™์–ด ํŒฝ์ฐฝ์„ ์‹œ์ž‘ํ•˜๋Š”๋ฐ, ํŒฝ์ฐฝ ๊ณผ์ •์—์„œ ํ˜ผํ•ฉ๋ฌผ์€ ๋‹จ๋‹จํ•œ ๋‹ค๊ณต์„ฑ ๊ตฌ์กฐ๋กœ ๋ณ€ํ˜•๋˜์–ด ๋ณด์˜จ์„ฑ์ด ๊ฐ•ํ™”๋œ ์…€๋ฃฐ๋Ÿฌ ํผ(cellular foam)์„ ์ƒ์„ฑํ•˜๋ฉด์„œ ๋ฒ„ํผ์ธต(20)์˜ ์™ธ๋ฉด์— ์˜๊ตฌ์ ์œผ๋กœ ๊ณ ์ •๋œ๋‹ค.The polyol and the isocyanate are contained in their respective containers and then pumped with a spray gun through a hose and mixed, and a mixture thereof is sprayed onto the outer surface of the buffer layer 20. The sprayed mixture adheres to the outer surface of the buffer layer 20 and starts to expand. In the process of expansion, the mixture is transformed into a rigid porous structure to create a cellular foam with enhanced heat retention and permanently on the outer surface of the buffer layer 20. Is fixed.

์ „์ˆ ํ•˜์˜€๋“ฏ์ด, ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(22)๋Š” ๊ธ€๋ž˜์Šค ํด๋กœ์Šค์™€ ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ ์ค‘ ์–ด๋Š ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•˜๋ฏ€๋กœ, ๋ฏธ์„ธํ•œ ๊ตฌ๋ฉ์ด ํ˜•์„ฑ๋œ ์ง๋ฌผ ์กฐ์ง ๋˜๋Š” ๋ฉ”์‰ฌ ๊ตฌ์กฐ๋ฅผ ๊ฐ€์ง„๋‹ค. ๋”ฐ๋ผ์„œ, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(22)์˜ ๋ฏธ์„ธ ๊ตฌ๋ฉ ๋˜๋Š” ํ‹ˆ์ƒˆ๋ฅผ ์นจํˆฌํ•˜์—ฌ ๋‹จ์—ด๋ถ€(21)์˜ ๊ธˆ์†๋ฐ•ํŒ(212)๊ณผ ์ ‘์ด‰ํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ๋ฒ„ํผ์ธต(20)์— ๋งค์šฐ ๊ฒฌ๊ณ ํ•˜๊ฒŒ ๋ถ€์ฐฉ๋  ์ˆ˜ ์žˆ๋‹ค. As described above, the crack barrier 22 includes any one of a glass cloth and a glass mesh, and thus has a fabric structure or a mesh structure in which fine holes are formed. Accordingly, the foamed insulating layer 30 may penetrate the fine holes or gaps of the crack barrier 22 to come into contact with the metal thin plate 212 of the insulating part 21, and may be very firmly attached to the buffer layer 20. .

๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์œผ๋กœ ๋ฎ์ผ ์ˆ˜ ์žˆ๋‹ค. ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์€ ๋ฐ˜๊ฐ€์š”์„ฑ(semi-flexible) ์ฝ”ํŒ…์ธต ๋˜๋Š” ๋ฐ˜๊ฐ€์š”์„ฑ ๋งค์Šคํ‹ฑ(mastic) ๋˜๋Š” ์ด๋ฅผ ๊ฐ•ํ™”ํ•œ ๊ฐ•ํ™” ์ฝ”ํŒ…์ธต ๋˜๋Š” ๋ฉ”ํƒˆ ์†Œ์žฌ์˜ jacketing ์œผ๋กœ ๊ตฌ์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค.The foam insulation layer 30 may be covered with a flexible protective layer 50. The flexible protective layer 50 may be composed of a semi-flexible coating layer or a semi-flexible mastic, a reinforced coating layer reinforcing the same, or a jacketing of a metal material.

๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์€ ์ ์ ˆํ•œ ๋„๊ตฌ ๋ฐ ์žฅ๋น„๋ฅผ ์ด์šฉํ•˜์—ฌ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์™ธ๋ฉด์— ์ฝ”ํŒ…์žฌ ์กฐ์„ฑ๋ฌผ์„ ์Šคํ”„๋ ˆ์ด ๋ถ„์‚ฌ ํ›„ ๊ฒฝํ™”ํ•˜๊ฑฐ๋‚˜, ๋งค์Šคํ‹ฑ ์กฐ์„ฑ๋ฌผ์„ ๋„ํฌ ํ›„ ๊ฒฝํ™”ํ•˜๋Š” ๋ฐฉ์‹์œผ๋กœ ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค. ์ฝ”ํŒ…์žฌ ์กฐ์„ฑ๋ฌผ์€ ํด๋ฆฌ์šฐ๋ ˆํƒ„ ๊ธฐ๋ฐ˜์˜ ์กฐ์„ฑ๋ฌผ์ผ ์ˆ˜ ์žˆ๋‹ค. ๋˜๋Š” ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์˜ ๋‹ค๋ฅธ ํ˜•ํƒœ๋กœ์„œ, ๋ฉ”ํƒˆ ์†Œ์žฌ๋ฅผ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์™ธ๋ฉด์— ์„ค์น˜(jacketing)ํ•˜์—ฌ ํ˜•์„ฑํ•  ์ˆ˜ ์žˆ๋‹ค.The flexible protective layer 50 may be formed by spray-spraying and curing the coating composition on the outer surface of the foam insulation layer 30 using appropriate tools and equipment, or curing after applying the mastic composition. The coating composition may be a polyurethane-based composition. Alternatively, as another form of the flexible protective layer 50, a metal material may be formed by jacketing the outer surface of the foamed insulating layer 30.

๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100)์—์„œ ํƒฑํฌ(10)๋ฅผ ์ œ์™ธํ•œ ๋ฒ„ํผ์ธต(20)๊ณผ ๋ฐœํฌ ๋‹จ์—ด์ธต(30) ๋ฐ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์ด ๊ทน์ €์˜จ ๋‹จ์—ด ๊ตฌ์กฐ(60)๋ฅผ ๊ตฌ์„ฑํ•œ๋‹ค. ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ๋ถ€ํ”ผ๋ฉด์—์„œ ๊ทน์ €์˜จ ๋‹จ์—ด ๊ตฌ์กฐ(60)์˜ ๋Œ€๋ถ€๋ถ„์„ ์ฐจ์ง€ํ•œ๋‹ค. ์ฆ‰ ๋ฒ„ํผ์ธต(20)๊ณผ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)๊ณผ ๋น„๊ตํ•  ๋•Œ ๊ทนํžˆ ์ž‘์€ ๋‘๊ป˜๋ฅผ ๊ฐ€์ง„๋‹ค.In the containment system 100, the buffer layer 20 except the tank 10, the foam insulation layer 30, and the flexible protective layer 50 constitute the cryogenic insulation structure 60. The foamed insulating layer 30 occupies most of the cryogenic insulating structure 60 in terms of volume. That is, the buffer layer 20 and the flexible protective layer 50 have an extremely small thickness compared to the foamed insulating layer 30.

๋ฐœํฌ ๋‹จ์—ด์ธต(30)๊ณผ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50) ๊ฐ๊ฐ์€ ์ด์Œ๋งค๊ฐ€ ์—†๋Š”(seamless) ๋‹จ์ผ ๊ตฌ์กฐ๋กœ ์ด๋ฃจ์–ด์ง„๋‹ค. ์‹ฌ๋ฆฌ์Šค ๊ตฌ์กฐ๋ฌผ์ธ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)๊ณผ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์€ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100)์˜ ํ‘œ๋ฉด์„ ๋งค๋„๋Ÿฝ๊ฒŒ ํ•˜๋ฉฐ, ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100)์˜ ๊ธฐ๋ฐ€์„ฑ์„ ํ–ฅ์ƒ์‹œํ‚จ๋‹ค. ๋˜ํ•œ, ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์€ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100) ํ‘œ๋ฉด์˜ ๊ฒฌ๊ณ ์„ฑ์„ ๋†’์ธ๋‹ค.Each of the foam insulation layer 30 and the flexible protective layer 50 has a single structure that is seamless. The foam insulation layer 30 and the flexible protective layer 50, which are seamless structures, smooth the surface of the containment system 100 and improve the airtightness of the containment system 100. In addition, the flexible protective layer 50 increases the rigidity of the surface of the containment system 100.

์ „์ˆ ํ•œ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100)์—์„œ, ํƒฑํฌ(10)์™€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30) ์‚ฌ์ด์— ์œ„์น˜ํ•˜๋Š” ๋ฒ„ํผ์ธต(20)์€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)๋ณด๋‹ค ์–‡๊ณ  ์œ ์—ฐํ•˜๋ฉฐ(flexible), ๋ฐœํฌ ๋‹จ์—ด์ธต(30)๋ณด๋‹ค ์ž‘์€ ํƒ„์„ฑ๊ณ„์ˆ˜(elastic modulus)๋ฅผ ๊ฐ€์ง€๋Š” ์žฌ๋ฃŒ๋กœ ํ˜•์„ฑ๋œ๋‹ค. ๋˜ํ•œ, ๋ฒ„ํผ์ธต(20)์€ ๊ณ ์ •๊ตฌ(40)์— ์˜ํ•ด ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์— ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋˜๋ฏ€๋กœ, ๋ฒ„ํผ์ธต(20) ๊ฐ€์šด๋ฐ ๋ณต์ˆ˜์˜ ๊ณ ์ •๊ตฌ(40)์™€ ๊ฒน์น˜์ง€ ์•Š๋Š” ๋ถ€๋ถ„(ํŽธ์˜์ƒ '๋น„๊ณ ์ • ๋ถ€์œ„'๋ผ ํ•œ๋‹ค)์€ ํƒฑํฌ(10) ์™ธ๋ฒฝ์— ๋Œ€ํ•œ ๊ตฌ์†๋ ฅ์ด ์ž‘์šฉํ•˜์ง€ ์•Š๋Š”๋‹ค.In the above-described storage system 100, the buffer layer 20 positioned between the tank 10 and the foam insulation layer 30 is thinner and flexible than the foam insulation layer 30, and has a smaller elastic modulus than the foam insulation layer 30. (elastic modulus) is formed of a material. In addition, since the buffer layer 20 is fixed to the outer wall of the tank 10 by the fastener 40 in a non-adhesive state, a portion of the buffer layer 20 that does not overlap with the plurality of fasteners 40 (referred to as a'non-fixed area' for convenience). ) Does not have a binding force on the outer wall of the tank 10.

๋‹ค์‹œ ๋งํ•ด, ๋ฒ„ํผ์ธต(20)์˜ ๋น„๊ณ ์ • ๋ถ€์œ„๋Š” ์ ‘์ฐฉ์ œ ์—†์ด ๋‹จ์ˆœํžˆ ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์„ ๋ฎ๊ณ  ์žˆ์œผ๋ฏ€๋กœ, ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ๊ณผ ๋น„๊ณ ์ • ๋ถ€์œ„ ์‚ฌ์ด์— ์†Œ์ •์˜ ํ‹ˆ(Gap)์ด ์กด์žฌํ•˜๋ฉฐ, ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ๊ณผ ๋น„๊ณ ์ • ๋ถ€์œ„ ์‚ฌ์ด์—๋Š” ์ƒํ˜ธ ๊ตฌ์†๋ ฅ์ด ์ž‘์šฉํ•˜์ง€ ์•Š๋Š”๋‹ค.In other words, since the non-fixed portion of the buffer layer 20 simply covers the outer wall of the tank 10 without an adhesive, a predetermined gap exists between the outer wall of the tank 10 and the non-fixed portion, and the tank 10 ) There is no mutual binding force between the outer wall and the non-fixed part.

๊ทน์ €์˜จ ๋‹จ์—ด ๊ตฌ์กฐ(60)๋Š” ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ ์ „์ฒด์— ์œ„์น˜ํ•œ๋‹ค. ์ด๋•Œ ํƒฑํฌ(10) ์™ธ๋ฒฝ์€ ํ‰ํƒ„๋ถ€์™€ ๊ตด๊ณก๋ถ€๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. ๋„ 3์€ ๊ตด๊ณก๋ถ€์— ํ•ด๋‹นํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100)์˜ ๋ถ€๋ถ„ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค. ๋„ 1์˜ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100)์€ ํ‰ํƒ„๋ถ€๋ฅผ ๋‚˜ํƒ€๋‚ด๊ณ  ์žˆ๋‹ค. ๋„ 1๊ณผ ๋„ 3์„ ์ฐธ๊ณ ํ•˜๋ฉด, ํ‰ํƒ„๋ถ€์™€ ๊ตด๊ณก๋ถ€ ๋ชจ๋‘์—์„œ ๊ณ ์ •๊ตฌ(40)๋Š” ์„œ๋กœ๊ฐ„ ๊ฑฐ๋ฆฌ๋ฅผ ๋‘๊ณ  ๋ณต์ˆ˜ ๊ฐœ๋กœ ์„ค์น˜๋˜๋ฉฐ, ๊ฐ™์€ ๊ตฌ์„ฑ์˜ ๊ทน์ €์˜จ ๋‹จ์—ด ๊ตฌ์กฐ(60)๊ฐ€ ํ‰ํƒ„๋ถ€์™€ ๊ตด๊ณก๋ถ€ ๋ชจ๋‘์— ์œ„์น˜ํ•œ๋‹ค.The cryogenic insulation structure 60 is located on the entire outer wall of the tank 10. At this time, the outer wall of the tank 10 may include a flat portion and a bent portion. 3 is a partially enlarged cross-sectional view of the containment system 100 corresponding to the bent portion. The containment system 100 of FIG. 1 shows a flat portion. 1 and 3, in both the flat portion and the bent portion, a plurality of fasteners 40 are installed at a distance from each other, and a cryogenic insulation structure 60 having the same configuration is located in both the flat portion and the bent portion.

ํƒฑํฌ(10)์— ์•กํ™”๊ฐ€์Šค๊ฐ€ ์ €์žฅ๋˜๊ธฐ ์ „, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๋‚ด๋ฉด๊ณผ ์™ธ๋ฉด์€ ๊ฐ™์€ ์˜จ๋„๋ฅผ ์œ ์ง€ํ•œ๋‹ค. ์˜ˆ๋ฅผ ๋“ค์–ด ์™ธ๊ธฐ๊ฐ€ 20โ„ƒ์ธ ๊ฒฝ์šฐ, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๋‚ด๋ฉด๊ณผ ์™ธ๋ฉด์€ ๋ชจ๋‘ 20โ„ƒ์˜ ์˜จ๋„๋ฅผ ์œ ์ง€ํ•  ์ˆ˜ ์žˆ๋‹ค. ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์—๋Š” ์˜จ๋„ ๊ตฌ๋ฐฐ๊ฐ€ ์กด์žฌํ•˜์ง€ ์•Š๋Š”๋‹ค.Before the liquefied gas is stored in the tank 10, the inner and outer surfaces of the foam insulating layer 30 are maintained at the same temperature. For example, when the outside air is 20ยฐC, both the inner and outer surfaces of the foamed insulating layer 30 may maintain a temperature of 20ยฐC. There is no temperature gradient in the foam insulation layer 30.

ํƒฑํฌ(10)์— ์•กํ™”๊ฐ€์Šค, ์˜ˆ๋ฅผ ๋“ค์–ด ์•กํ™”์ฒœ์—ฐ๊ฐ€์Šค(LNG)๊ฐ€ ์œ ์ž…๋˜๋ฉด ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ๊ณผ ์ ‘ํ•˜๋Š” ๋ฒ„ํผ์ธต(20) ๋ฐ ๋ฒ„ํผ์ธต(20)๊ณผ ์ ‘ํ•˜๋Š” ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๋‚ด๋ฉด์€ ๋Œ€๋žต -163โ„ƒ๋กœ ๋ƒ‰๊ฐ๋˜๋Š” ๋ฐ˜๋ฉด, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์™ธ๋ฉด์€ ์—ฌ์ „์ด 20โ„ƒ๋ฅผ ์œ ์ง€ํ•œ๋‹ค. ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์—๋Š” ๋Œ€๋žต 183โ„ƒ์— ์ด๋ฅด๋Š” ์˜จ๋„ ๊ตฌ๋ฐฐ๊ฐ€ ์กด์žฌํ•˜๋ฉฐ, ํƒฑํฌ(10)์™€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์—ดํŒฝ์ฐฝ ๊ณ„์ˆ˜ ์ฐจ์ด์— ์˜ํ•ด ๋ฒ„ํผ์ธต(20)๊ณผ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์— ์‘๋ ฅ์ด ๋ฐœ์ƒํ•œ๋‹ค.When liquefied gas, for example, liquefied natural gas (LNG) is introduced into the tank 10, the buffer layer 20 in contact with the outer wall of the tank 10 and the inner surface of the foam insulation layer 30 in contact with the buffer layer 20 are approximately -163. While cooled to ยฐC, the outer surface of the foam insulation layer 30 is still maintained at 20 ยฐC. The foamed insulating layer 30 has a temperature gradient of approximately 183ยฐC, and stress is generated in the buffer layer 20 and the foamed insulating layer 30 due to a difference in thermal expansion coefficient between the tank 10 and the foamed insulating layer 30.

์ด๋•Œ ์‘๋ ฅ์€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๋‚ด๋ฉด๊ณผ ์ ‘ํ•˜๋Š” ๋ฒ„ํผ์ธต(30)์— ์ง‘์ค‘๋˜๋Š”๋ฐ, ๋ฒ„ํผ์ธต(20)์€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)๋ณด๋‹ค ์–‡๊ณ  ์œ ์—ฐํ•˜๋ฉฐ ํƒ„์„ฑ๊ณ„์ˆ˜๊ฐ€ ๋‚ฎ์€ ์žฌ๋ฃŒ์  ํŠน์„ฑ์— ์˜ํ•ด ์‰ฝ๊ฒŒ ๋ณ€ํ˜•๋œ๋‹ค. ๋ฒ„ํผ์ธต(20)์˜ ๋ณ€ํ˜•์€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๋ณ€ํ˜•๋ฅ ์„ ํก์ˆ˜ํ•˜์—ฌ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์‘๋ ฅ์„ ์ €๊ฐ์‹œํ‚ค๋Š” ์ž‘์šฉ์„ ํ•œ๋‹ค.At this time, the stress is concentrated on the buffer layer 30 in contact with the inner surface of the foam insulation layer 30, the buffer layer 20 is thinner than the foam insulation layer 30, flexible, and is easily deformed by the material properties having a low elastic modulus. The deformation of the buffer layer 20 acts to reduce the stress of the foamed insulating layer 30 by absorbing the strain of the foamed insulating layer 30.

๋˜ํ•œ, ์™ธ๊ธฐ์˜ ์˜จ๋„๊ฐ€ 45โ„ƒ๋กœ ์ƒ์Šนํ•˜๋ฉด ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์„ ๊ฐ€๋กœ์ง€๋ฅด๋Š” ์˜จ๋„ ๊ตฌ๋ฐฐ๋Š” ๋Œ€๋žต 208โ„ƒ๋กœ ์ƒ์Šนํ•œ๋‹ค. ์ด ๊ฒฝ์šฐ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์‘๋ ฅ์ด ๋” ์ปค์ง€๋ฉด์„œ ๋ณ€ํ˜•๋ฅ ๋„ ์ปค์ง€๋Š”๋ฐ, ๋ฒ„ํผ์ธต(20)์ด ์ „์ˆ ํ•œ ๊ฒฝ์šฐ(์™ธ๊ธฐ๊ฐ€ 20โ„ƒ์ธ ๊ฒฝ์šฐ)๋ณด๋‹ค ๋” ๋งŽ์ด ๋ณ€ํ˜•๋˜๋ฉด์„œ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๋ณ€ํ˜•๋ฅ ์„ ํก์ˆ˜ํ•˜์—ฌ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์‘๋ ฅ์„ ์ €๊ฐ์‹œํ‚จ๋‹ค.In addition, when the temperature of the outside air rises to 45ยฐC, the temperature gradient across the foam insulation layer 30 rises to approximately 208ยฐC. In this case, the stress of the foam insulation layer 30 increases and the strain increases, but the buffer layer 20 is deformed more than the above-described case (when the outside air is at 20ยฐC) and absorbs the strain of the foam insulation layer 30 to absorb the foam insulation layer. Reduce the stress of (30).

์ „์ˆ ํ•œ ๋‘ ๊ฒฝ์šฐ ๋ชจ๋‘์—์„œ, ๋ฒ„ํผ์ธต(20)์€ ํƒฑํฌ(10) ์™ธ๋ฒฝ์— ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋˜์–ด ์žˆ์œผ๋ฏ€๋กœ, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ํƒฑํฌ(10)์™€ ๊ฑฐ๋™์ด ์—ฐ๊ณ„๋˜์ง€ ์•Š๋Š”๋‹ค. ์ฆ‰, ์•กํ™”๊ฐ€์Šค์— ์˜ํ•ด ํƒฑํฌ(10)์™€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์ด ๋ƒ‰๊ฐ๋  ๋•Œ, ํƒฑํฌ(10)์™€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ์—ดํŒฝ์ฐฝ ๊ณ„์ˆ˜ ์ฐจ์ด์— ์˜ํ•ด ์ˆ˜์ถ•๋ฅ ์— ์ฐจ์ด๊ฐ€ ๋ฐœ์ƒํ•˜์ง€๋งŒ, ๋ฒ„ํผ์ธต(20)๊ณผ ํƒฑํฌ(10) ์™ธ๋ฒฝ ์‚ฌ์ด์— ์กด์žฌํ•˜๋Š” ํ‹ˆ์ด ํƒฑํฌ(10)์™€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์ง์ ‘์ ์ธ ์ƒํ˜ธ์ž‘์šฉ์„ ์ฐจ๋‹จํ•œ๋‹ค.In both cases described above, since the buffer layer 20 is fixed to the outer wall of the tank 10 in a non-adhesive state, the foamed insulating layer 30 is not related to the behavior of the tank 10. That is, when the tank 10 and the foam insulation layer 30 are cooled by the liquefied gas, the tank 10 and the foam insulation layer 30 have a difference in shrinkage due to the difference in the coefficient of thermal expansion, but the buffer layer 20 and the tank (10) The gap existing between the outer walls blocks the direct interaction between the tank 10 and the foam insulation layer 30.

์˜ˆ๋ฅผ ๋“ค์–ด, ๋ฒ„ํผ์ธต(20)์ด ์ƒ๋žต๋˜๊ณ , ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์ด ํƒฑํฌ(10) ์™ธ๋ฒฝ์— ์ง์ ‘ ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ํ˜•์„ฑ๋œ ๊ฒฝ์šฐ๋ฅผ ๊ฐ€์ •ํ•˜๋ฉด, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ํƒฑํฌ(10)์™€ ๊ฑฐ๋™์ด ์—ฐ๊ณ„๋œ๋‹ค.For example, assuming that the buffer layer 20 is omitted and the foamed insulating layer 30 is formed by a spray method directly on the outer wall of the tank 10, the foamed insulating layer 30 is connected to the tank 10 in behavior.

๊ตฌ์ฒด์ ์œผ๋กœ, ํƒฑํฌ(10)์™€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์ด ๋ƒ‰๊ฐ๋  ๋•Œ, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์ˆ˜์ถ•๋ฅ ์€ ํƒฑํฌ(10)์˜ ์ˆ˜์ถ•๋ฅ ๊ณผ ๋‹ค๋ฅด์ง€๋งŒ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๋‚ด๋ฉด์€ ํƒฑํฌ(10)์˜ ์ˆ˜์ถ•๋ฅ ์„ ๋”ฐ๋ผ์•ผ ํ•œ๋‹ค. ์ด๋กœ ์ธํ•ด ์˜จ๋„ ๊ตฌ๋ฐฐ๊ฐ€ ์ปค์งˆ์ˆ˜๋ก ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์‘๋ ฅ์ด ๋†’์•„์ง€๋ฉฐ, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์— ๊ท ์—ด๊ณผ ๋ฐ•๋ฆฌ๊ฐ€ ๋ฐœ์ƒํ•  ์œ„ํ—˜์ด ์ปค์ง„๋‹ค.Specifically, when the tank 10 and the foam insulation layer 30 are cooled, the shrinkage rate of the foam insulation layer 30 is different from the shrinkage rate of the tank 10, but the inner surface of the foam insulation layer 30 must follow the shrinkage rate of the tank 10. do. Accordingly, as the temperature gradient increases, the stress of the foam insulation layer 30 increases, and the risk of occurrence of cracks and peeling in the foam insulation layer 30 increases.

๊ทธ๋Ÿฌ๋‚˜ ๋ณธ ์‹ค์‹œ์˜ˆ์˜ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100)์—์„œ๋Š” ๋ฒ„ํผ์ธต(20)์˜ ๊ณ ์ • ๊ตฌ์กฐ์— ์˜ํ•ด ํƒฑํฌ(10)์™€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๊ฑฐ๋™์ด ์ง์ ‘ ์—ฐ๊ณ„๋˜์ง€ ์•Š์œผ๋ฏ€๋กœ, ํƒฑํฌ(10)์˜ ์ˆ˜์ถ•-ํŒฝ์ฐฝ์— ์˜ํ•œ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๊ท ์—ด๊ณผ ๋ฐ•๋ฆฌ๋ฅผ ํšจ๊ณผ์ ์œผ๋กœ ์–ต์ œํ•  ์ˆ˜ ์žˆ๋‹ค.However, in the storage system 100 of the present embodiment, since the behavior of the tank 10 and the foamed insulating layer 30 is not directly linked by the fixing structure of the buffer layer 20, the foamed insulating layer due to shrinkage-expansion of the tank 10 ( 30) cracking and peeling can be effectively suppressed.

๋„ 4์™€ ๋„ 5๋Š” ๋ณธ ๋ฐœ๋ช…์˜ ์ œ2 ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ๋ถ€๋ถ„ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค. ๋„ 4๋Š” ํƒฑํฌ ์™ธ๋ฒฝ์˜ ํ‰ํƒ„๋ถ€์— ํ•ด๋‹นํ•˜๊ณ , ๋„ 5๋Š” ํƒฑํฌ ์™ธ๋ฒฝ์˜ ๊ตด๊ณก๋ถ€์— ํ•ด๋‹นํ•œ๋‹ค.4 and 5 are partially enlarged cross-sectional views of a containment system according to a second embodiment of the present invention. 4 corresponds to the flat portion of the outer wall of the tank, and FIG. 5 corresponds to the bent portion of the outer wall of the tank.

๋„ 4์™€ ๋„ 5๋ฅผ ์ฐธ๊ณ ํ•˜๋ฉด, ์ œ2 ์‹ค์‹œ์˜ˆ์˜ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(200)์—์„œ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๋‚ด๋ถ€์— ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๊ฐ€ ์œ„์น˜ํ•œ๋‹ค. ๋ฒ„ํผ์ธต(20)์— ํฌํ•จ๋œ ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(22)๋ฅผ ํŽธ์˜์ƒ '์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด'๋ผ ํ•œ๋‹ค. ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(22)์™€ ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33) ์‚ฌ์ด์— ์œ„์น˜ํ•˜๋Š” ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต(31)๊ณผ, ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)์™€ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50) ์‚ฌ์ด์— ์œ„์น˜ํ•˜๋Š” ์ œ2 ๋ฐœํฌ ๋‹จ์—ด์ธต(32)์œผ๋กœ ๊ตฌ์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค.Referring to FIGS. 4 and 5, a second crack barrier 33 is positioned inside the foam insulation layer 30 in the containment system 200 of the second embodiment. The crack barrier 22 included in the buffer layer 20 is referred to as a'first crack barrier' for convenience. The foam insulation layer 30 is between the first foam insulation layer 31 and the second crack barrier 33 and the flexible protective layer 50 positioned between the first crack barrier 22 and the second crack barrier 33 It may be composed of a second insulating foam layer 32 positioned on.

์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต(31)์€ ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(22) ์œ„์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๊ณ , ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต(31) ์œ„์— ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๊ฐ€ ์œ„์น˜ํ•  ์ˆ˜ ์žˆ๋‹ค. ์ œ2 ๋ฐœํฌ ๋‹จ์—ด์ธต(32)์€ ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33) ์œ„์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค.The first foam insulation layer 31 may be formed on the first crack barrier 22 by a spray method, and a second crack barrier 33 may be positioned on the first foam insulation layer 31. The second insulating foam layer 32 may be formed on the second crack barrier 33 by a spray method.

์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๋Š” ๋ฐœํฌ ๋‹จ์—ด์ธต(30)๋ณด๋‹ค ์–‡๊ณ  ์œ ์—ฐํ•˜๋ฉฐ, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ํƒ„์„ฑ๊ณ„์ˆ˜๋ณด๋‹ค ์ž‘์€ ํƒ„์„ฑ๊ณ„์ˆ˜๋ฅผ ๊ฐ€์ง€๋Š” ์žฌ๋ฃŒ๋กœ ํ˜•์„ฑ๋œ๋‹ค. ์˜ˆ๋ฅผ ๋“ค์–ด, ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๋Š” ๊ธ€๋ž˜์Šค ํด๋กœ์Šค, ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ, ๊ธˆ์† ๋งคํŠธ๋ฆญ์Šค(metal matrix) ์ค‘ ์ ์–ด๋„ ์–ด๋Š ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(22)์™€ ๋™์ผํ•œ ์†Œ์žฌ๋กœ ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค. ๋”ฐ๋ผ์„œ, ํƒฑํฌ(10)์— ์•กํ™”๊ฐ€์Šค๊ฐ€ ์ €์žฅ๋˜์–ด ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์— ์‘๋ ฅ์ด ๋ฐœ์ƒํ•  ๋•Œ, ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๊ฐ€ ์žฌ๋ฃŒ์  ํŠน์„ฑ์— ์˜ํ•ด ์‰ฝ๊ฒŒ ๋ณ€ํ˜•๋˜๋ฉด์„œ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๋ณ€ํ˜•๋ฅ ์„ ํก์ˆ˜ํ•˜์—ฌ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์‘๋ ฅ์„ ์ €๊ฐ์‹œํ‚จ๋‹ค. ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๋Š” ํ•˜๋‚˜ ์ด์ƒ์˜ ๊ฐœ์ˆ˜๋กœ ๊ตฌ์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค.The second crack barrier 33 is thinner and more flexible than the foam insulation layer 30 and is formed of a material having an elastic modulus smaller than that of the foam insulation layer 30. For example, the second crack barrier 33 may include at least one of a glass cloth, a glass mesh, and a metal matrix, and may be formed of the same material as the first crack barrier 22. Therefore, when the liquefied gas is stored in the tank 10 and stress is generated in the foam insulation layer 30, the second crack barrier 33 is easily deformed by the material properties and absorbs the strain of the foam insulation layer 30 to foam. It reduces the stress of the heat insulating layer 30. The second crack barrier 33 may be formed in more than one number.

๋ฒ„ํผ์ธต(20)๊ณผ ๋”๋ถˆ์–ด ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๋ฅผ ๊ตฌ๋น„ํ•œ ์ œ2 ์‹ค์‹œ์˜ˆ์˜ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(200)์€ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๊ท ์—ด๊ณผ ๋ฐ•๋ฆฌ ๋ฐœ์ƒ์„ ๋”์šฑ ํšจ๊ณผ์ ์œผ๋กœ ์–ต์ œํ•  ์ˆ˜ ์žˆ๋‹ค. ๋”ฐ๋ผ์„œ, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์„ ๊ฐ€๋กœ์ง€๋ฅด๋Š” ์˜จ๋„ ๊ตฌ๋ฐฐ๊ฐ€ ๋งค์šฐ ํด ๊ฒฝ์šฐ์— ๋ณด๋‹ค ํšจ๊ณผ์ ์œผ๋กœ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์‘๋ ฅ์„ ์ €๊ฐ์‹œํ‚ฌ ์ˆ˜ ์žˆ๋‹ค. ์ œ2 ์‹ค์‹œ์˜ˆ์˜ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(200)์€ ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๊ฐ€ ์ถ”๊ฐ€๋œ ๊ฒƒ์„ ์ œ์™ธํ•˜๊ณ  ์ „์ˆ ํ•œ ์ œ1 ์‹ค์‹œ์˜ˆ์™€ ๋™์ผ ๋˜๋Š” ์œ ์‚ฌํ•œ ๊ตฌ์„ฑ์œผ๋กœ ์ด๋ฃจ์–ด์ง€๋ฉฐ, ์ค‘๋ณต๋˜๋Š” ์„ค๋ช…์€ ์ƒ๋žตํ•œ๋‹ค.The storage system 200 of the second embodiment including the second crack barrier 33 in addition to the buffer layer 20 may more effectively suppress the occurrence of cracks and peeling of the foamed insulating layer 30. Therefore, when the temperature gradient across the foamed insulating layer 30 is very large, the stress of the foamed insulating layer 30 can be more effectively reduced. The storage system 200 of the second embodiment has the same or similar configuration as that of the first embodiment, except that the second crack barrier 33 is added, and redundant descriptions are omitted.

๋„ 6์€ ๋ณธ ๋ฐœ๋ช…์˜ ์ œ3 ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ ์ค‘ ๋ฒ„ํผ์ธต๊ณผ ๊ณ ์ •๊ตฌ์˜ ๋ถ€๋ถ„ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค.6 is a partially enlarged cross-sectional view of a buffer layer and a fixture in the storage system according to the third embodiment of the present invention.

๋„ 6์„ ์ฐธ๊ณ ํ•˜๋ฉด, ์ œ3 ์‹ค์‹œ์˜ˆ์˜ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์—์„œ ๊ณ ์ •๊ตฌ(401)๋Š” ์Šคํ„ฐ๋“œ ํ•€(45)๊ณผ ๊ณ ์ • ์™€์…”(46)๋ฅผ ํฌํ•จํ•  ์ˆ˜ ์žˆ๋‹ค. ์Šคํ„ฐ๋“œ ํ•€(45)์€ ๋ฒ„ํผ์ธต(20)๊ณผ ๊ณ ์ • ์™€์…”(46)๋ฅผ ๊ด€ํ†ตํ•˜๋Š” ์ˆ˜์ง๋ถ€(451)์™€, ์ˆ˜์ง๋ถ€(451)๋กœ๋ถ€ํ„ฐ ์ ˆ๊ณก๋˜์–ด ๊ณ ์ • ์™€์…”(46)์˜ ์œ—๋ฉด์— ๋ฐ€์ฐฉ๋œ ์ˆ˜ํ‰๋ถ€(452)๋กœ ๊ตฌ์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค. ์ˆ˜ํ‰๋ถ€(452)๋Š” ์ˆ˜์ง๋ถ€(451)๋กœ๋ถ€ํ„ฐ ์ง๊ฐ์œผ๋กœ ๊บพ์ผ ์ˆ˜ ์žˆ์œผ๋ฉฐ, ์ˆ˜ํ‰๋ถ€(452)์˜ ๋‹จ๋ถ€๋Š” ๋พฐ์กฑํ•œ ํ˜•์ƒ์ผ ์ˆ˜ ์žˆ๋‹ค.Referring to FIG. 6, in the storage system of the third embodiment, the fixture 401 may include a stud pin 45 and a fixing washer 46. The stud pin 45 includes a vertical portion 451 penetrating the buffer layer 20 and the fixing washer 46, and a horizontal portion 452 bent from the vertical portion 451 and in close contact with the upper surface of the fixing washer 46. Can be configured. The horizontal portion 452 may be bent at a right angle from the vertical portion 451, and the end of the horizontal portion 452 may have a pointed shape.

์Šคํ„ฐ๋“œ ํ•€(45)์€ ์ตœ์ดˆ ๋ง‰๋Œ€ ํ˜•์ƒ์ผ ์ˆ˜ ์žˆ์œผ๋ฉฐ, ์ด ์ƒํƒœ์—์„œ ๋ฒ„ํผ์ธต(20)์„ ๊ด€ํ†ตํ•œ๋‹ค. ๊ณ ์ • ์™€์…”(46)๋Š” ๋ฒ„ํผ์ธต(20) ์œ„์—์„œ ์Šคํ„ฐ๋“œ ํ•€(45)์— ์ฒด๊ฒฐ๋œ๋‹ค. ๊ณ ์ • ์™€์…”(46)๋Š” ์ œ1 ์‹ค์‹œ์˜ˆ์˜ ์ œ1 ๊ณ ์ • ์™€์…”(421)์™€ ๋™์ผํ•œ ์žฌ์งˆ๊ณผ ํ˜•์ƒ์œผ๋กœ ์ด๋ฃจ์–ด์งˆ ์ˆ˜ ์žˆ๋‹ค. ๋ฒ„ํผ์ธต(20)๊ณผ ๊ณ ์ • ์™€์…”(46)๊ฐ€ ์Šคํ„ฐ๋“œ ํ•€(45)์— ๊ฒฐํ•ฉ๋œ ํ›„, ์Šคํ„ฐ๋“œ ํ•€(45)์˜ ์œ—๋ถ€๋ถ„์ด ์ง๊ฐ์œผ๋กœ ๊บพ์—ฌ ์ˆ˜ํ‰๋ถ€(452)๊ฐ€ ๋˜๋ฉฐ, ์ˆ˜ํ‰๋ถ€(452)๊ฐ€ ๊ณ ์ • ์™€์…”(46)์™€ ๋ฒ„ํผ์ธต(20)์„ ๊ฐ•ํ•˜๊ฒŒ ๋ˆŒ๋Ÿฌ ๋ฒ„ํผ์ธต(20)์„ ํƒฑํฌ(10)์— ๊ฒฌ๊ณ ํ•˜๊ฒŒ ๊ณ ์ •์‹œํ‚จ๋‹ค.The stud pin 45 may have an initial rod shape, and penetrates the buffer layer 20 in this state. The fixing washer 46 is fastened to the stud pin 45 on the buffer layer 20. The fixing washer 46 may be formed of the same material and shape as the first fixing washer 421 of the first embodiment. After the buffer layer 20 and the fixing washer 46 are coupled to the stud pin 45, the upper portion of the stud pin 45 is bent at a right angle to become a horizontal portion 452, and the horizontal portion 452 is fixed washer 46 ) And the buffer layer 20 are strongly pressed to firmly fix the buffer layer 20 to the tank 10.

์ด์™€ ๊ฐ™์ด ์Šคํ„ฐ๋“œ ํ•€(45)์˜ ์ˆ˜ํ‰๋ถ€(452)๋Š” ์ œ1 ์‹ค์‹œ์˜ˆ์˜ ๊ณ ์ • ๋„ˆํŠธ(43)๋กœ ๊ธฐ๋Šฅํ•œ๋‹ค. ์ „์ˆ ํ•œ ๊ณ ์ •๊ตฌ(401)๋Š” ๊ณ ์ • ๋„ˆํŠธ๋ฅผ ์ƒ๋žตํ•˜์—ฌ ๋ถ€ํ’ˆ ์ˆ˜๋ฅผ ์ค„์ด๊ณ , ์ „์ฒด ๊ตฌ์„ฑ์„ ๊ฐ„์†Œํ™”ํ•  ์ˆ˜ ์žˆ๋‹ค. ์ œ3 ์‹ค์‹œ์˜ˆ์˜ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์€ ๊ณ ์ •๊ตฌ(401)์˜ ๊ตฌ์„ฑ์„ ์ œ์™ธํ•˜๊ณ  ์ „์ˆ ํ•œ ์ œ1 ์‹ค์‹œ์˜ˆ ๋ฐ ์ œ2 ์‹ค์‹œ์˜ˆ ์ค‘ ์–ด๋Š ํ•œ ์‹ค์‹œ์˜ˆ์™€ ๋™์ผ ๋˜๋Š” ์œ ์‚ฌํ•œ ๊ตฌ์„ฑ์œผ๋กœ ์ด๋ฃจ์–ด์ง„๋‹ค.In this way, the horizontal portion 452 of the stud pin 45 functions as the fixing nut 43 of the first embodiment. The above-described fastener 401 can reduce the number of parts by omitting the fixing nut and simplify the overall configuration. The storage system of the third embodiment has the same or similar configuration to any one of the first and second embodiments described above except for the configuration of the fixture 401.

๋„ 7์€ ๋ณธ ๋ฐœ๋ช…์˜ ์ผ ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•์„ ๋‚˜ํƒ€๋‚ธ ์ˆœ์„œ๋„์ด๋‹ค.7 is a flow chart showing a construction method of the storage system according to an embodiment of the present invention.

๋„ 7์„ ์ฐธ๊ณ ํ•˜๋ฉด, ์ผ ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•์€, ์•กํ™”๊ฐ€์Šค ์ €์žฅ์„ ์œ„ํ•œ ํƒฑํฌ๋ฅผ ์ œ๊ณตํ•˜๋Š” ์ œ1 ๋‹จ๊ณ„(S10)์™€, ๋ณต์ˆ˜์˜ ๊ณ ์ •๊ตฌ๋ฅผ ์ด์šฉํ•˜์—ฌ ํƒฑํฌ ์™ธ๋ฒฝ์— ๋ฒ„ํผ์ธต์„ ๊ณ ์ •ํ•˜๋Š” ์ œ2 ๋‹จ๊ณ„(S20)์™€, ๋ฒ„ํผ์ธต์˜ ์™ธ๋ฉด์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๋Š” ์ œ3 ๋‹จ๊ณ„(S30)๋ฅผ ํฌํ•จํ•œ๋‹ค. ์ œ3 ๋‹จ๊ณ„(S30) ์ดํ›„, ๋ฐœํฌ ๋‹จ์—ด์ธต ์œ„์— ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต์„ ํ˜•์„ฑํ•˜๋Š” ์ œ4 ๋‹จ๊ณ„(S40)๊ฐ€ ์ˆ˜ํ–‰๋  ์ˆ˜ ์žˆ๋‹ค.Referring to FIG. 7, a method of constructing a storage system according to an embodiment includes a first step (S10) of providing a tank for storing liquefied gas, and a second step of fixing a buffer layer to the outer wall of the tank using a plurality of fasteners. It includes a step S20 and a third step S30 of forming a foam insulation layer on the outer surface of the buffer layer by spraying. After the third step (S30), a fourth step (S40) of forming a flexible protective layer on the foamed insulating layer may be performed.

๋„ 8๊ณผ ๋„ 9๋Š” ๋„ 7์— ๋„์‹œํ•œ ์ œ1 ๋‹จ๊ณ„์™€ ์ œ2 ๋‹จ๊ณ„๋ฅผ ์„ค๋ช…ํ•˜๊ธฐ ์œ„ํ•ด ๋„์‹œํ•œ ํƒฑํฌ์˜ ๊ฐœ๋žต๋„์ด๋‹ค.8 and 9 are schematic diagrams of a tank shown to explain the first and second steps shown in FIG. 7.

๋„ 8๊ณผ ๋„ 9๋ฅผ ์ฐธ๊ณ ํ•˜๋ฉด, ์ œ1 ๋‹จ๊ณ„(S10)์—์„œ ํƒฑํฌ(10)๋Š” ๊ตฌํ˜•, ๊ฐ๊ธฐ๋‘ฅํ˜•, ์›ํ†ตํ˜• ์ค‘ ์–ด๋Š ํ•˜๋‚˜์˜ ํ˜•์ƒ์ผ ์ˆ˜ ์žˆ๊ณ , ์•Œ๋ฃจ๋ฏธ๋Š„, ์Šคํ…Œ์ธ๋ฆฌ์Šค ๊ฐ•, ๊ฐ• ํ•ฉ๊ธˆ ๋“ฑ์œผ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๋‹ค. ํƒฑํฌ(10)๋Š” ์•กํ™”๊ฐ€์Šค์˜ ์œ ์ž…๊ณผ ๋ฐฐ์ถœ์„ ์œ„ํ•œ ๊ด€๋กœ ๊ตฌ์กฐ๋ฌผ(11)์„ ๊ตฌ๋น„ํ•œ๋‹ค. ๊ด€๋กœ ๊ตฌ์กฐ๋ฌผ(11)์€ ํƒฑํฌ(10)์˜ ์™ธ์ธก์œผ๋กœ ๋Œ์ถœ๋œ ๊ตฌ์กฐ๋ฌผ์ผ ์ˆ˜ ์žˆ๋‹ค.8 and 9, in the first step (S10), the tank 10 may be in any one of a spherical shape, a prismatic shape, and a cylindrical shape, and may be made of aluminum, stainless steel, or steel alloy. The tank 10 includes a conduit structure 11 for introducing and discharging liquefied gas. The conduit structure 11 may be a structure protruding to the outside of the tank 10.

๋„ 8์—์„œ๋Š” ํƒฑํฌ(10)๊ฐ€ ๊ฐ๊ธฐ๋‘ฅํ˜•์ธ ๊ฒฝ์šฐ๋ฅผ ์˜ˆ๋กœ ๋“ค์–ด ๋„์‹œํ•˜์˜€๊ณ , ๋„ 9์—์„œ๋Š” ํƒฑํฌ(10)๊ฐ€ ์›ํ†ตํ˜•์ด๋ฉด์„œ ๋‘ ๊ฐœ์˜ ์„œํฌํŠธ(12) ์œ„์— ์„ค์น˜๋œ ๊ฒฝ์šฐ๋ฅผ ์˜ˆ๋กœ ๋“ค์–ด ๋„์‹œํ•˜์˜€๋‹ค. ํƒฑํฌ(10)์˜ ํ˜•์ƒ๊ณผ ์ง€์ง€ ๊ตฌ์กฐ๋Š” ๋„์‹œํ•œ ์˜ˆ์‹œ๋กœ ํ•œ์ •๋˜์ง€ ์•Š๋Š”๋‹ค.In FIG. 8, a case in which the tank 10 has a prismatic shape is illustrated as an example, and in FIG. 9, a case in which the tank 10 is cylindrical and installed on two supports 12 is illustrated as an example. The shape and support structure of the tank 10 are not limited to the illustrated example.

์ œ2 ๋‹จ๊ณ„(S20)์—์„œ ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์— ๋ณต์ˆ˜์˜ ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41)๊ฐ€ ์„œ๋กœ๊ฐ„ ๊ฑฐ๋ฆฌ๋ฅผ ๋‘๊ณ  ์„ค์น˜๋œ๋‹ค. ๋‹ค๋ฅธ ํ•œํŽธ์œผ๋กœ, ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41) ๋Œ€์‹  ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์— ๋ณต์ˆ˜์˜ ์Šคํ„ฐ๋“œ ํ•€(45)์ด ์„œ๋กœ๊ฐ„ ๊ฑฐ๋ฆฌ๋ฅผ ๋‘๊ณ  ์„ค์น˜๋  ์ˆ˜ ์žˆ๋‹ค. ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41)์™€ ์Šคํ„ฐ๋“œ ํ•€(45)์€ ํƒฑํฌ(10)์™€ ๊ฐ™์€ ๊ธˆ์†์œผ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๊ณ , ์šฉ์ ‘ ๋“ฑ์˜ ๋ฐฉ๋ฒ•์œผ๋กœ ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์— ๋ถ€์ฐฉ๋œ๋‹ค.In the second step (S20), a plurality of stud bolts 41 are installed on the outer wall of the tank 10 at a distance from each other. On the other hand, instead of the stud bolt 41, a plurality of stud pins 45 may be installed on the outer wall of the tank 10 at a distance from each other. The stud bolt 41 and the stud pin 45 may be made of the same metal as the tank 10 and are attached to the outer wall of the tank 10 by welding or the like.

๋„ 10๊ณผ ๋„ 11์€ ๋„ 7์— ๋„์‹œํ•œ ์ œ2 ๋‹จ๊ณ„๋ฅผ ์„ค๋ช…ํ•˜๊ธฐ ์œ„ํ•œ ๋ฒ„ํผ์ธต๊ณผ ๊ณ ์ •๊ตฌ์˜ ํ™•๋Œ€ ๋‹จ๋ฉด๋„์ด๋‹ค. ๋„ 10์—์„œ๋Š” ์ œ1 ์‹ค์‹œ์˜ˆ์˜ ๊ณ ์ •๊ตฌ(40)๋ฅผ ๋„์‹œํ•˜์˜€๊ณ , ๋„ 11์—์„œ๋Š” ์ œ3 ์‹ค์‹œ์˜ˆ์˜ ๊ณ ์ •๊ตฌ(401)๋ฅผ ๋„์‹œํ•˜์˜€๋‹ค.10 and 11 are enlarged cross-sectional views of a buffer layer and a fixture for explaining the second step shown in FIG. 7. In FIG. 10, the fastener 40 of the first embodiment is shown, and in FIG. 11, the fastener 401 of the third embodiment is shown.

๋„ 8 ๋‚ด์ง€ ๋„ 11์„ ์ฐธ๊ณ ํ•˜๋ฉด, ๊ด€๋กœ ๊ตฌ์กฐ๋ฌผ(11)์„ ์ œ์™ธํ•œ ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ ์ „์ฒด์— ๋ฒ„ํผ์ธต(20)์ด ๋ฐฐ์น˜๋˜๋ฉฐ, ์ด ๊ณผ์ •์—์„œ ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41) ๋˜๋Š” ์Šคํ„ฐ๋“œ ํ•€(45)์ด ๋ฒ„ํผ์ธต(20)์„ ๊ด€ํ†ตํ•œ๋‹ค. ์ฆ‰, ๋ฒ„ํผ์ธต(20)์—๋Š” ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41) ๋˜๋Š” ์Šคํ„ฐ๋“œ ํ•€(45)์— ํ•ด๋‹นํ•˜๋Š” ๊ด€ํ†ต๊ตฌ๋ฉ์ด ํ˜•์„ฑ๋˜๊ณ , ๋ฒ„ํผ์ธต(20)์€ ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41) ๋˜๋Š” ์Šคํ„ฐ๋“œ ํ•€(45)์— ์˜ํ•ด ์ž„์‹œ๋กœ ์œ„์น˜ ๊ณ ์ •์ด ์ด๋ฃจ์–ด์ง„๋‹ค.8 to 11, the buffer layer 20 is disposed on the entire outer wall of the tank 10 excluding the pipe structure 11, and in this process, the stud bolt 41 or the stud pin 45 is applied to the buffer layer 20. ) Through. That is, a through hole corresponding to the stud bolt 41 or the stud pin 45 is formed in the buffer layer 20, and the buffer layer 20 is temporarily fixed by the stud bolt 41 or the stud pin 45. Done.

๋ฒ„ํผ์ธต(20)์€ ์ผ์ •ํ•œ ํญ์„ ๊ฐ€์ง„ ๊ธธ๋‹ค๋ž€ ์‹œํŠธ ํ˜•ํƒœ์ผ ์ˆ˜ ์žˆ์œผ๋ฉฐ, ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์— ์‹œ๊ณต๋˜๊ธฐ ์ „, ๋กค(roll) ํ˜•ํƒœ๋กœ ๋‘ฅ๊ธ€๊ฒŒ ๋ง๋ฆฐ ํ˜•ํƒœ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๋‹ค. ๋กค ํ˜•ํƒœ๋กœ ์ œ์ž‘๋œ ๋ฒ„ํผ์ธต(20)์€ ๊ณต์žฅ์—์„œ ํ˜„์žฅ์œผ๋กœ ์ด์†ก๋œ ํ›„ ๋กค์—์„œ ์‹œํŠธ๊ฐ€ ํ’€์–ด์ง€๋ฉด์„œ ํƒฑํฌ(10) ์™ธ๋ฒฝ์— ์ˆœ์ฐจ์ ์œผ๋กœ ๋ฐฐ์น˜๋  ์ˆ˜ ์žˆ๋‹ค.The buffer layer 20 may be in the form of an elongate sheet having a certain width, and may be manufactured in a form rolled in a roll form before being installed on the outer wall of the tank 10. The buffer layer 20 manufactured in the form of a roll may be sequentially disposed on the outer wall of the tank 10 while the sheet is released from the roll after being transferred from the factory to the site.

์ด๋•Œ ๋กค์—์„œ ํ’€๋ฆฐ ๋ฒ„ํผ์ธต(20)์€ ๋จผ์ € ๋ฐฐ์น˜๋œ ์ด์›ƒํ•œ ๋ฒ„ํผ์ธต(20)๊ณผ ์ผ๋ถ€ ๊ฒน์น  ์ˆ˜ ์žˆ๋‹ค. ๋”ฐ๋ผ์„œ ํƒฑํฌ(10) ์™ธ๋ฒฝ์—์„œ ๋ฒ„ํผ์ธต(20)์€ ๋‘ ๊ฒน์˜ ์‹œํŠธ๊ฐ€ ์ค‘์ฒฉ๋œ ์˜ค๋ฒ„๋žฉ(overlap) ์˜์—ญ(21)(๋„ 9 ์ฐธ์กฐ)์„ ๊ฐ€์งˆ ์ˆ˜ ์žˆ๋‹ค. ๋กค ํ˜•ํƒœ์˜ ๋ฒ„ํผ์ธต(20)์€ ์ด์†ก๊ณผ ๋ณด๊ด€์ด ์šฉ์ดํ•˜๊ณ , ํƒฑํฌ(10) ๋ชจ์–‘์— ์ƒ๊ด€์—†์ด ๋น ๋ฅธ ์‹œ๊ฐ„์— ๋ฐฐ์น˜๋  ์ˆ˜ ์žˆ๋Š” ํŽธ๋ฆฌํ•จ์ด ์žˆ๋‹ค.At this time, the buffer layer 20 unwound from the roll may partially overlap the adjacent buffer layer 20 disposed earlier. Therefore, the buffer layer 20 on the outer wall of the tank 10 may have an overlap region 21 (see FIG. 9) in which two layers of sheets are overlapped. The buffer layer 20 in the form of a roll is easy to transport and store, and there is a convenience that can be disposed in a short time regardless of the shape of the tank 10.

ํ•œํŽธ, ๋ฒ„ํผ์ธต(20)์˜ ๋‹ค๋ฅธ ํ˜•ํƒœ๋กœ์„œ, ๊ธด ์‹œํŠธ ํ˜•ํƒœ๊ฐ€ ์•„๋‹Œ ์ผ์ •ํ•œ ๊ทœ๊ฒฉ์˜ ์‹œํŠธ ํ˜•ํƒœ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๋‹ค. ์˜ˆ๋ฅผ ๋“ค์–ด, ๋ฒ„ํผ์ธต(20)์€ ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ์— ์‹œ๊ณต๋˜๊ธฐ ์ „, ์ผ์ •ํ•œ ๊ฐ€๋กœ์™€ ์„ธ๋กœ์˜ ๊ทœ๊ฒฉ์„ ๊ฐ€์ง€๋Š” ์‚ฌ๊ฐํ˜• ์‹œํŠธ ํ˜•ํƒœ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ๋‹ค. ์ด๋Ÿฌํ•œ ๊ฒฝ์šฐ, ์‚ฌ๊ฐํ˜• ์‹œํŠธ ํ˜•ํƒœ์˜ ๋ฒ„ํผ์ธต(20)์„ ์„œ๋กœ ๋‚˜๋ž€ํ•˜๊ฒŒ ์ธ์ ‘์‹œํ‚ค๊ฑฐ๋‚˜ ๊ฐ€์žฅ์ž๋ฆฌ๋ฅผ ์„œ๋กœ ์ค‘์ฒฉ์‹œ์ผœ์„œ ๋ฒ„ํผ์ธต(20)์„ ํƒฑํฌ(10) ์™ธ๋ฒฝ์— ๋ฐฐ์น˜ํ•  ์ˆ˜ ์žˆ๋‹ค.On the other hand, as another form of the buffer layer 20, it may be manufactured in a sheet form of a certain standard rather than a long sheet form. For example, before being installed on the outer wall of the tank 10, the buffer layer 20 may be manufactured in the form of a rectangular sheet having a certain horizontal and vertical standard. In this case, the buffer layer 20 may be disposed on the outer wall of the tank 10 by adjoining the buffer layers 20 in the form of square sheets in parallel or overlapping the edges with each other.

์Šคํ„ฐ๋“œ ๋ณผํŠธ(41)์˜ ๊ฒฝ์šฐ, ๋ฒ„ํผ์ธต(20) ์œ„๋กœ ์ œ1 ๋ฐ ์ œ2 ๊ณ ์ • ์™€์…”(421, 422)์™€ ๊ณ ์ • ๋„ˆํŠธ(43)๊ฐ€ ์Šคํ„ฐ๋“œ ๋ณผํŠธ(41)์— ์ฐจ๋ก€๋กœ ์ฒด๊ฒฐ๋˜๋ฉด์„œ ๋ฒ„ํผ์ธต(20)์„ ๊ฒฌ๊ณ ํ•˜๊ฒŒ ๊ณ ์ •์‹œํ‚จ๋‹ค. ์Šคํ„ฐ๋“œ ํ•€(45)์˜ ๊ฒฝ์šฐ, ๋ฒ„ํผ์ธต(20) ์œ„๋กœ ๊ณ ์ • ์™€์…”(46)๊ฐ€ ์Šคํ„ฐ๋“œ ํ•€(45)์— ์ฒด๊ฒฐ๋˜๊ณ , ๊ณ ์ • ์™€์…”(46) ์œ„์—์„œ ์Šคํ„ฐ๋“œ ํ•€(45)์ด ์ง๊ฐ์œผ๋กœ ๊บพ์ด๋ฉด์„œ ๊ณ ์ • ์™€์…”(46)๋ฅผ ๋ˆŒ๋Ÿฌ ๋ฒ„ํผ์ธต(20)์„ ๊ฒฌ๊ณ ํ•˜๊ฒŒ ๊ณ ์ •์‹œํ‚จ๋‹ค. In the case of the stud bolt 41, the first and second fixing washers 421 and 422 and the fixing nut 43 are sequentially fastened to the stud bolt 41 over the buffer layer 20 to firmly fix the buffer layer 20 . In the case of the stud pin 45, the fixing washer 46 is fastened to the stud pin 45 on the buffer layer 20, and the fixing washer 46 is bent at a right angle on the fixing washer 46. Press to securely fix the buffer layer 20.

๋ฒ„ํผ์ธต(20)์€ ํƒฑํฌ(10)์™€ ๋งˆ์ฃผํ•˜๋Š” ๋‹จ์—ด๋ถ€(21)์™€, ๋‹จ์—ด๋ถ€(21)์˜ ์™ธ๋ฉด์„ ๋ฎ๋Š” ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(22)๋ฅผ ํฌํ•จํ•˜๋ฉฐ, ๋ณต์ˆ˜์˜ ๊ณ ์ •๊ตฌ(40, 401)์— ์˜ํ•ด ํƒฑํฌ(10) ์™ธ๋ฒฝ์— ์œ„์น˜ ๊ณ ์ •์ด ์ด๋ฃจ์–ด์ง„๋‹ค. ๋ฒ„ํผ์ธต(20) ๊ฐ€์šด๋ฐ ๊ณ ์ •๊ตฌ(40, 401)์™€ ๊ฒน์น˜์ง€ ์•Š๋Š” ๋ถ€์œ„(๋น„๊ณ ์ • ๋ถ€์œ„)์—์„œ๋Š” ํƒฑํฌ(10) ์™ธ๋ฒฝ๊ณผ์˜ ์‚ฌ์ด์— ์†Œ์ •์˜ ํ‹ˆ์ด ์กด์žฌํ•œ๋‹ค.The buffer layer 20 includes a heat insulating portion 21 facing the tank 10 and a crack barrier 22 covering the outer surface of the heat insulating portion 21, and the tank 10 by a plurality of fasteners 40 and 401 ) The position is fixed on the outer wall. In a portion of the buffer layer 20 that does not overlap with the fixtures 40 and 401 (non-fixed portion), a predetermined gap exists between the outer wall of the tank 10.

ํ•œํŽธ, ๋ณธ ๋ฐœ๋ช…์˜ ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅด๋ฉด, ๋ฒ„ํผ์ธต(20)์ด ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ ์ „์ฒด์— ๊ณ ์ •๊ตฌ(40, 401)๋ฅผ ํ†ตํ•˜์—ฌ ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋  ์ˆ˜ ์žˆ์ง€๋งŒ, ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ ์ผ๋ถ€์—๋งŒ ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋˜๋ฉด์„œ ๋‚˜๋จธ์ง€ ์ผ๋ถ€์—๋Š” ์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋  ์ˆ˜๋„ ์žˆ๋‹ค. ์ฆ‰, ๋ณธ ๋ฐœ๋ช…์˜ ์‹ค์‹œ์˜ˆ๋Š” ๋ฒ„ํผ์ธต(20)์„ ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ ์ „์ฒด์— ๊ณ ์ •๊ตฌ(40, 401)๋ฅผ ํ†ตํ•˜์—ฌ ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •ํ•˜๋Š” ๋ฐฉ๋ฒ•๋ฟ๋งŒ ์•„๋‹ˆ๋ผ, ๋ฒ„ํผ์ธต(20)์„ ํƒฑํฌ(10)์˜ ์™ธ๋ฒฝ ์ผ๋ถ€์— ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •ํ•˜๋Š” ๋ฐฉ๋ฒ•๋„ ํฌํ•จํ•œ๋‹ค.Meanwhile, according to the embodiment of the present invention, the buffer layer 20 may be fixed to the entire outer wall of the tank 10 in a non-adhesive state through fasteners 40 and 401, but only a portion of the outer wall of the tank 10 is non-adhesive. While being fixed in a state, it may be fixed in an adhesive state to the remaining part. That is, in the embodiment of the present invention, as well as a method of fixing the buffer layer 20 to the entire outer wall of the tank 10 in a non-adhesive state through the fasteners 40 and 401, the buffer layer 20 is attached to the outer wall of the tank 10 It also includes a method of fixing it in a non-adhesive state on a part.

๋„ 1๊ณผ ๋„ 7์„ ์ฐธ๊ณ ํ•˜๋ฉด, ์ œ3 ๋‹จ๊ณ„(S30)์—์„œ ๋ฒ„ํผ์ธต(20)์˜ ์™ธ๋ฉด์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์ด ํ˜•์„ฑ๋œ๋‹ค. ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ํด๋ฆฌ์šฐ๋ ˆํƒ„์„ ํฌํ•จํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ๋ฒ„ํผ์ธต(20)์˜ ์™ธ๋ฉด์— ์Šคํ”„๋ ˆ์ด ๊ฑด์œผ๋กœ ํด๋ฆฌ์˜ฌ๊ณผ ์ด์†Œ์‹œ์•„๋„ค์ดํŠธ๋ฅผ ํ˜ผํ•ฉ ๋ถ„์‚ฌํ•˜๋Š” ๋ฐฉ๋ฒ•์œผ๋กœ ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค. ๋ถ„์‚ฌ๋œ ํ˜ผํ•ฉ๋ฌผ์€ ๋ฒ„ํผ์ธต(20)์˜ ์™ธ๋ฉด์— ๋‹ฌ๋ผ๋ถ™์–ด ํŒฝ์ฐฝํ•˜๊ณ , ํŒฝ์ฐฝ ๊ณผ์ •์—์„œ ๋‹ค๊ณต์„ฑ ๊ตฌ์กฐ๋กœ ๋ณ€ํ•˜๋ฉด์„œ ๊ฒฝํ™”๋˜์–ด ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์„ ๊ตฌ์„ฑํ•œ๋‹ค.Referring to FIGS. 1 and 7, a foam insulation layer 30 is formed on the outer surface of the buffer layer 20 in a third step S30 by a spray method. The foam insulation layer 30 may include polyurethane, and may be formed by mixing and spraying polyol and isocyanate with a spray gun on the outer surface of the buffer layer 20. The sprayed mixture adheres to the outer surface of the buffer layer 20 and expands, and is cured while changing into a porous structure during the expansion process to constitute the foamed insulating layer 30.

๋‹ค๋ฅธ ํ•œํŽธ์œผ๋กœ, ๋„ 4์™€ ๋„ 7์„ ์ฐธ๊ณ ํ•˜๋ฉด, ์ œ3 ๋‹จ๊ณ„(S30)์—์„œ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์€ ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต(31)๊ณผ ์ œ2 ๋ฐœํฌ ๋‹จ์—ด์ธต(32)์œผ๋กœ ๋‚˜๋ˆ„์–ด ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๊ณ , ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต(31)๊ณผ ์ œ2 ๋ฐœํฌ ๋‹จ์—ด์ธต(32) ์‚ฌ์ด์— ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๊ฐ€ ์œ„์น˜ํ•  ์ˆ˜ ์žˆ๋‹ค.On the other hand, referring to FIGS. 4 and 7, in the third step (S30), the foam insulation layer 30 may be formed by dividing into a first foam insulation layer 31 and a second foam insulation layer 32, and the first A second crack barrier 33 may be positioned between the foamed insulating layer 31 and the second foamed insulating layer 32.

๊ตฌ์ฒด์ ์œผ๋กœ, ๋ฒ„ํผ์ธต(20)์˜ ์™ธ๋ฉด์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต(31)์ด ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๊ณ , ๊ธ€๋ž˜์Šค ํด๋กœ์Šค์™€ ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ ์ค‘ ์–ด๋Š ํ•˜๋‚˜๋กœ ๊ตฌ์„ฑ๋œ ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๊ฐ€ ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต(31) ์œ„์— ๋ฐฐ์น˜๋  ์ˆ˜ ์žˆ๋‹ค. ์ด์–ด์„œ ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33) ์œ„์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ์ œ2 ๋ฐœํฌ ๋‹จ์—ด์ธต(32)์ด ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค.Specifically, the first foam insulation layer 31 may be formed on the outer surface of the buffer layer 20 by a spray method, and the second crack barrier 33 composed of any one of glass cloth and glass mesh is the first foam insulation layer 31 Can be placed on top. Subsequently, the second insulating foam layer 32 may be formed on the second crack barrier 33 by spraying.

์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๋Š” ์ „์ˆ ํ•œ ๋ฒ„ํผ์ธต(20)๊ณผ ๋งˆ์ฐฌ๊ฐ€์ง€๋กœ ๊ธธ๋‹ค๋ž€ ์‹œํŠธ๊ฐ€ ๋‘ฅ๊ธ€๊ฒŒ ๋ง๋ฆฐ ๋กค ํ˜•ํƒœ๋กœ ์ œ์ž‘๋  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ์‹œํŠธ๊ฐ€ ํ’€์–ด์ง€๋ฉด์„œ ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต(31) ์œ„์— ๋ฐฐ์น˜๋  ์ˆ˜ ์žˆ๋‹ค. ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(33)๋Š” ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์— ์‘๋ ฅ ๋ฐœ์ƒ ์‹œ ์‰ฝ๊ฒŒ ๋ณ€ํ˜•๋˜๋ฉด์„œ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ๋ณ€ํ˜•์œจ์„ ํก์ˆ˜ํ•˜์—ฌ ๋ฐœํฌ ๋‹จ์—ด์ธต(30)์˜ ์‘๋ ฅ์„ ์ €๊ฐ์‹œํ‚จ๋‹ค.Like the buffer layer 20 described above, the second crack barrier 33 may be manufactured in a roll shape in which a long sheet is rolled, and may be disposed on the first foam insulation layer 31 while the sheet is unwound. The second crack barrier 33 is easily deformed when stress occurs in the foam insulation layer 30 and absorbs the strain rate of the foam insulation layer 30 to reduce the stress of the foam insulation layer 30.

๋„ 1๊ณผ ๋„ 4 ๋ฐ ๋„ 7์„ ์ฐธ๊ณ ํ•˜๋ฉด, ์ œ4 ๋‹จ๊ณ„(S40)์—์„œ ๋ฐœํฌ ๋‹จ์—ด์ธต(30) ์œ„์— ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์ด ํ˜•์„ฑ๋œ๋‹ค. ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์€ ํด๋ฆฌ์šฐ๋ ˆํƒ„ ๊ธฐ๋ฐ˜์˜ ์ฝ”ํŒ…์žฌ ์กฐ์„ฑ๋ฌผ์„ ์Šคํ”„๋ ˆ์ด ๋ถ„์‚ฌ ํ›„ ๊ฒฝํ™”ํ•˜๊ฑฐ๋‚˜, ๋งค์Šคํ‹ฑ ์กฐ์„ฑ๋ฌผ์„ ๋„ํฌ ํ›„ ๊ฒฝํ™”ํ•˜๋Š” ๋ฐฉ์‹์œผ๋กœ ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค.Referring to FIGS. 1, 4, and 7, a flexible protective layer 50 is formed on the foamed insulating layer 30 in a fourth step S40. The flexible protective layer 50 may be formed by curing a polyurethane-based coating composition after spray spraying or curing after applying a mastic composition.

๋„ 12๋Š” ๋„ 7์— ๋„์‹œํ•œ ์ œ4 ๋‹จ๊ณ„ ์ดํ›„ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์„ ๋„์‹œํ•œ ๊ฐœ๋žต๋„์ด๋‹ค.12 is a schematic diagram showing the storage system after the fourth step shown in FIG. 7.

๋„ 12๋ฅผ ์ฐธ๊ณ ํ•˜๋ฉด, ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100)์—์„œ ๊ทน์ €์˜จ ๋‹จ์—ด ๊ตฌ์กฐ(60)๋Š” ํƒฑํฌ(10) ํ˜•์ƒ์— ๊ด€๊ณ„์—†์ด ๋น ๋ฅด๊ณ  ๊ฐ„ํŽธํ•œ ์‹œ๊ณต์ด ๊ฐ€๋Šฅํ•˜๊ณ , ๊ทน๋‹จ์ ์ธ ์˜จ๋„ ๋ณ€ํ™”์— ๊ฒฌ๋”œ ์ˆ˜ ์žˆ์œผ๋ฏ€๋กœ ์šด์šฉ ์ƒ์˜ ์ž์œ ๋„๊ฐ€ ๋†’๋‹ค. ๋˜ํ•œ, ๋ฐœํฌ ๋‹จ์—ด์ธต(30)๊ณผ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต(50)์€ ์ด์Œ๋งค๊ฐ€ ์—†๋Š” ๋‹จ์ผ ๊ตฌ์กฐ์ด๋ฏ€๋กœ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100)์˜ ํ‘œ๋ฉด์„ ๋งค๋„๋Ÿฝ๊ฒŒ ํ•˜๋ฉฐ, ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ(100) ํ‘œ๋ฉด์˜ ๊ธฐ๋ฐ€์„ฑ๊ณผ ๊ฒฌ๊ณ ์„ฑ์„ ํ–ฅ์ƒ์‹œํ‚จ๋‹ค.Referring to FIG. 12, the cryogenic insulation structure 60 in the containment system 100 enables quick and simple construction regardless of the shape of the tank 10 and can withstand extreme temperature changes, so the degree of freedom in operation is high. In addition, since the foamed insulating layer 30 and the flexible protective layer 50 have a single seamless structure, the surface of the containment system 100 is smoothed, and the airtightness and rigidity of the surface of the containment system 100 are improved.

์ƒ๊ธฐ์—์„œ๋Š” ๋ณธ ๋ฐœ๋ช…์˜ ๋ฐ”๋žŒ์งํ•œ ์‹ค์‹œ์˜ˆ์— ๋Œ€ํ•˜์—ฌ ์„ค๋ช…ํ•˜์˜€์ง€๋งŒ, ๋ณธ ๋ฐœ๋ช…์€ ์ด์— ํ•œ์ •๋˜๋Š” ๊ฒƒ์ด ์•„๋‹ˆ๊ณ  ํŠนํ—ˆ์ฒญ๊ตฌ๋ฒ”์œ„์™€ ๋ฐœ๋ช…์˜ ์ƒ์„ธํ•œ ์„ค๋ช… ๋ฐ ์ฒจ๋ถ€ํ•œ ๋„๋ฉด์˜ ๋ฒ”์œ„ ์•ˆ์—์„œ ์—ฌ๋Ÿฌ ๊ฐ€์ง€๋กœ ๋ณ€ํ˜•ํ•˜์—ฌ ์‹ค์‹œํ•˜๋Š” ๊ฒƒ์ด ๊ฐ€๋Šฅํ•˜๊ณ  ์ด ๋˜ํ•œ ๋ณธ ๋ฐœ๋ช…์˜ ๋ฒ”์œ„์— ์†ํ•˜๋Š” ๊ฒƒ์€ ๋‹น์—ฐํ•˜๋‹ค.In the above, preferred embodiments of the present invention have been described, but the present invention is not limited thereto, and it is possible to implement various modifications within the scope of the claims, the detailed description of the invention, and the accompanying drawings. It is natural to fall within the scope of

- ๋ถ€ํ˜ธ์˜ ์„ค๋ช… --Explanation of the sign-

100, 200: ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ 10: ํƒฑํฌ100, 200: containment system 10: tank

20: ๋ฒ„ํผ์ธต 21: ๋‹จ์—ด๋ถ€20: buffer layer 21: heat insulation

22: ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด(์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด) 30: ๋ฐœํฌ ๋‹จ์—ด์ธต22: crack barrier (first crack barrier) 30: foam insulation layer

31: ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต 32: ์ œ2 ๋ฐœํฌ ๋‹จ์—ด์ธต31: first foamed insulating layer 32: second foamed insulating layer

33: ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด 40, 401: ๊ณ ์ •๊ตฌ33: second crack barrier 40, 401: fixture

41: ์Šคํ„ฐ๋“œ ๋ณผํŠธ 42, 46: ๊ณ ์ • ์™€์…”41: stud bolt 42, 46: fixing washer

43: ๊ณ ์ • ๋„ˆํŠธ 45: ์Šคํ„ฐ๋“œ ํ•€43: fixing nut 45: stud pin

50: ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต 60: ๊ทน์ €์˜จ ๋‹จ์—ด ๊ตฌ์กฐ50: flexible protective layer 60: cryogenic insulation structure

Claims (17)

์•กํ™”๊ฐ€์Šค ์ €์žฅ์„ ์œ„ํ•œ ๋‚ด๋ถ€ ๊ณต๊ฐ„์„ ๊ฐ€์ง€๋Š” ํƒฑํฌ;A tank having an inner space for storing liquefied gas; ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์˜ ์ ์–ด๋„ ์ผ๋ถ€์— ๋น„์ ‘์ฐฉ ์ƒํƒœ๋กœ ๊ณ ์ •๋œ ๋ฒ„ํผ์ธต; ๋ฐA buffer layer fixed in a non-adhesive state to at least a portion of an outer wall of the tank; And ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์˜ ์™ธ๋ฉด์„ ๋ฎ์œผ๋ฉฐ, ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ํ˜•์„ฑ๋œ ๋ฐœํฌ ๋‹จ์—ด์ธต;A foam insulation layer covering the outer surface of the buffer layer and formed by a spray method; ์„ ํฌํ•จํ•˜๊ณ ,Including, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์€ ์ƒ๊ธฐ ๋ฐœํฌ ๋‹จ์—ด์ธต๋ณด๋‹ค ์–‡๊ณ  ์œ ์—ฐํ•˜๋ฉฐ, ์ƒ๊ธฐ ๋ฐœํฌ ๋‹จ์—ด์ธต์˜ ํƒ„์„ฑ๊ณ„์ˆ˜๋ณด๋‹ค ์ž‘์€ ํƒ„์„ฑ๊ณ„์ˆ˜๋ฅผ ๊ฐ€์ง€๋Š” ์žฌ๋ฃŒ๋กœ ํ˜•์„ฑ๋œ ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ.The buffer layer is thinner and more flexible than the foamed insulating layer, and is formed of a material having an elastic modulus less than that of the foamed insulating layer. ์ œ1ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 1, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์€ ๋‹จ์—ด์ธต์„ ํฌํ•จํ•˜๋ฉฐ,The buffer layer includes a heat insulating layer, ์ƒ๊ธฐ ๋‹จ์—ด์ธต์€ ์†Œํ”„ํŠธ ๋ฐœํฌ ์šฐ๋ ˆํƒ„ ํผ, ์†Œํ”„ํŠธ ๋ฐœํฌ ํด๋ฆฌ์Šคํ‹ฐ๋ Œ, ๋ฉœ๋ผ๋ฏผ ํผ, ๋ฐ ํด๋ฆฌ์—ํ‹ธ๋ Œ ํผ์œผ๋กœ ์ด๋ฃจ์–ด์ง„ ๊ตฐ์—์„œ ์„ ํƒ๋œ ์ ์–ด๋„ ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ.The insulating layer is a containment system comprising at least one selected from the group consisting of soft foamed urethane foam, soft foamed polystyrene, melamine foam, and polyethylene foam. ์ œ2ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 2, ์ƒ๊ธฐ ๋‹จ์—ด์ธต์˜ ๋‚ด๋ฉด๊ณผ ์™ธ๋ฉด์€ ๊ธˆ์†๋ฐ•ํŒ์œผ๋กœ ๋ฎ์ด๊ณ ,The inner and outer surfaces of the insulating layer are covered with a thin metal plate, ์ƒ๊ธฐ ๋‹จ์—ด์ธต๊ณผ ์ƒ๊ธฐ ๊ธˆ์†๋ฐ•ํŒ์ด ๋‹จ์—ด๋ถ€๋ฅผ ๊ตฌ์„ฑํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ.A storage system in which the heat insulating layer and the metal thin plate constitute a heat insulating part. ์ œ3ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 3, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์€ ์ƒ๊ธฐ ๋‹จ์—ด๋ถ€์˜ ์™ธ๋ฉด์„ ๋ฎ๋Š” ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๋ฅผ ํฌํ•จํ•˜๋ฉฐ,The buffer layer includes a first crack barrier covering an outer surface of the heat insulating portion, ์ƒ๊ธฐ ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๋Š” ๊ธ€๋ž˜์Šค ํด๋กœ์Šค(glass cloth)์™€ ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ(glass mesh) ์ค‘ ์–ด๋Š ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ.The first crack barrier is a containment system comprising any one of a glass cloth (glass cloth) and a glass mesh (glass mesh). ์ œ1ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 1, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์€ ์‹œํŠธ ํ˜•ํƒœ๋กœ ์ œ์ž‘๋˜๊ณ , ๊ณ ์ •๊ตฌ์— ์˜ํ•ด ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์˜ ์ ์–ด๋„ ์ผ๋ถ€์— ๋ฌผ๋ฆฌ์ ์œผ๋กœ ๊ณ ์ •๋˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ.The buffer layer is manufactured in the form of a sheet, and is physically fixed to at least a part of an outer wall of the tank by a fixture. ์ œ5ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 5, ์ƒ๊ธฐ ๊ณ ์ •๊ตฌ๋Š”,The fixture, ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๊ณ ์ •๋˜๋ฉฐ ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์„ ๊ด€ํ†ตํ•˜๋Š” ์Šคํ„ฐ๋“œ ๋ณผํŠธ;A stud bolt fixed to an outer wall of the tank and passing through the buffer layer; ์ƒ๊ธฐ ๋ฒ„ํผ์ธต ์œ„์—์„œ ์ƒ๊ธฐ ์Šคํ„ฐ๋“œ ๋ณผํŠธ์— ์ฒด๊ฒฐ๋œ ๊ณ ์ • ์™€์…”; ๋ฐA fixing washer fastened to the stud bolt on the buffer layer; And ์ƒ๊ธฐ ๊ณ ์ • ์™€์…” ์œ„์—์„œ ์ƒ๊ธฐ ์Šคํ„ฐ๋“œ ๋ณผํŠธ์— ์ฒด๊ฒฐ๋œ ๊ณ ์ • ๋„ˆํŠธ๋ฅผ ํฌํ•จํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ.A containment system comprising a fixing nut fastened to the stud bolt over the fixing washer. ์ œ5ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 5, ์ƒ๊ธฐ ๊ณ ์ •๊ตฌ๋Š”,The fixture, ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๊ณ ์ •๋˜๋ฉฐ ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์„ ๊ด€ํ†ตํ•˜๋Š” ์Šคํ„ฐ๋“œ ํ•€; ๋ฐA stud pin fixed to an outer wall of the tank and passing through the buffer layer; And ์ƒ๊ธฐ ๋ฒ„ํผ์ธต ์œ„์—์„œ ์ƒ๊ธฐ ์Šคํ„ฐ๋“œ ํ•€์— ์ฒด๊ฒฐ๋œ ๊ณ ์ • ์™€์…”๋ฅผ ํฌํ•จํ•˜๋ฉฐ,And a fixing washer fastened to the stud pin on the buffer layer, ์ƒ๊ธฐ ์Šคํ„ฐ๋“œ ํ•€์€ ์ƒ๊ธฐ ๋ฒ„ํผ์ธต๊ณผ ์ƒ๊ธฐ ๊ณ ์ • ์™€์…”๋ฅผ ๊ด€ํ†ตํ•˜๋Š” ์ˆ˜์ง๋ถ€์™€, ์ƒ๊ธฐ ์ˆ˜์ง๋ถ€๋กœ๋ถ€ํ„ฐ ์ ˆ๊ณก๋˜์–ด ์ƒ๊ธฐ ๊ณ ์ • ์™€์…”์˜ ์œ—๋ฉด์— ๋ฐ€์ฐฉ๋œ ์ˆ˜ํ‰๋ถ€๋ฅผ ํฌํ•จํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ.The stud pin includes a vertical portion passing through the buffer layer and the fixing washer, and a horizontal portion bent from the vertical portion and in close contact with the upper surface of the fixing washer. ์ œ1ํ•ญ ๋‚ด์ง€ ์ œ7ํ•ญ ์ค‘ ์–ด๋Š ํ•œ ํ•ญ์— ์žˆ์–ด์„œ,The method according to any one of claims 1 to 7, ์ƒ๊ธฐ ๋ฐœํฌ ๋‹จ์—ด์ธต์˜ ์™ธ๋ฉด์„ ๋ฎ๋Š” ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต์„ ๋” ํฌํ•จํ•˜๋ฉฐ,Further comprising a flexible protective layer covering the outer surface of the foam insulation layer, ์ƒ๊ธฐ ๋ฐœํฌ ๋‹จ์—ด์ธต๊ณผ ์ƒ๊ธฐ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต์€ ์ด์Œ๋งค๊ฐ€ ์—†๋Š” ๋‹จ์ผ ๊ตฌ์กฐ๋ฅผ ์ด๋ฃจ๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ.The containment system in which the foam insulation layer and the flexible protective layer form a single seamless structure. ์ œ8ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 8, ์ƒ๊ธฐ ๋ฐœํฌ ๋‹จ์—ด์ธต์˜ ๋‚ด๋ถ€์— ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๊ฐ€ ์œ„์น˜ํ•˜๋ฉฐ,A second crack barrier is located inside the foam insulation layer, ์ƒ๊ธฐ ์ œ2 ํฌ๋ž™ ๋ฒ ๋ฆฌ์–ด๋Š” ๊ธ€๋ž˜์Šค ํด๋กœ์Šค, ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ, ๊ธˆ์† ๋งคํŠธ๋ฆญ์Šค(metal matrix) ์ค‘ ์ ์–ด๋„ ์–ด๋Š ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ.The second crack barrier contains at least one of a glass cloth, a glass mesh, and a metal matrix. ์•กํ™”๊ฐ€์Šค ์ €์žฅ์„ ์œ„ํ•œ ํƒฑํฌ๋ฅผ ์ œ๊ณตํ•˜๋Š” ๋‹จ๊ณ„;Providing a tank for storing liquefied gas; ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์˜ ์ ์–ด๋„ ์ผ๋ถ€์— ๊ณ ์ •๊ตฌ๋ฅผ ์ด์šฉํ•˜์—ฌ ๋ฒ„ํผ์ธต์„ ๊ณ ์ •์‹œํ‚ค๋Š” ๋‹จ๊ณ„;Fixing the buffer layer to at least a portion of the outer wall of the tank using a fixture; ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์˜ ์™ธ๋ฉด์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๋‹จ๊ณ„;Forming a foam insulation layer on the outer surface of the buffer layer by spraying; ๋ฅผ ํฌํ•จํ•˜๊ณ ,Including, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์€ ์ƒ๊ธฐ ๋ฐœํฌ ๋‹จ์—ด์ธต๋ณด๋‹ค ์–‡๊ณ  ์œ ์—ฐํ•˜๋ฉฐ, ์ƒ๊ธฐ ๋ฐœํฌ ๋‹จ์—ด์ธต์˜ ํƒ„์„ฑ๊ณ„์ˆ˜๋ณด๋‹ค ์ž‘์€ ํƒ„์„ฑ๊ณ„์ˆ˜๋ฅผ ๊ฐ€์ง€๋Š” ์žฌ๋ฃŒ๋กœ ํ˜•์„ฑ๋˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•.The buffer layer is thinner and more flexible than the foamed insulating layer, and is formed of a material having an elastic modulus smaller than that of the foamed insulating layer. ์ œ10ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 10, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์€ ๊ธธ๋‹ค๋ž€ ์‹œํŠธ๊ฐ€ ๋‘ฅ๊ธ€๊ฒŒ ๋ง๋ฆฐ ๋กค ํ˜•ํƒœ๋กœ ์ œ์ž‘๋˜์–ด ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์œผ๋กœ ์ด์†ก๋˜๊ณ , ์ƒ๊ธฐ ๋กค์—์„œ ์ƒ๊ธฐ ์‹œํŠธ๊ฐ€ ํ’€๋ฆฌ๋ฉด์„œ ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ์ˆœ์ฐจ์ ์œผ๋กœ ๋ฐฐ์น˜๋˜๋ฉฐ,The buffer layer is manufactured in the form of a roll in which an elongated sheet is rolled and transferred to the outer wall of the tank, and is sequentially disposed on the outer wall of the tank while the sheet is released from the roll, ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๋ฐฐ์น˜๋œ ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์€ ๋‘ ๊ฒน์˜ ์‹œํŠธ๊ฐ€ ์ค‘์ฒฉ๋œ ์˜ค๋ฒ„๋žฉ ์˜์—ญ์„ ํฌํ•จํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•.The method of constructing a storage system, wherein the buffer layer disposed on the outer wall of the tank includes an overlap area in which two layers of sheets are overlapped. ์ œ11ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 11, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์€ ์ƒ๊ธฐ ๊ณ ์ •๊ตฌ์— ์˜ํ•ด ์ƒ๊ธฐ ํƒฑํฌ์˜ ์ ์–ด๋„ ์ผ๋ถ€์— ๋ฌผ๋ฆฌ์ ์œผ๋กœ ๊ณ ์ •๋˜๊ณ ,The buffer layer is physically fixed to at least a portion of the tank by the fixture, ์ƒ๊ธฐ ๋ฌผ๋ฆฌ์ ์œผ๋กœ ๊ณ ์ •๋œ ๋ฒ„ํผ์ธต ๊ฐ€์šด๋ฐ ์ƒ๊ธฐ ๊ณ ์ •๊ตฌ์™€ ๊ฒน์น˜์ง€ ์•Š๋Š” ๋ถ€๋ถ„์€ ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ๊ณผ ๋น„์ ‘์ฐฉ ์ƒํƒœ๋ฅผ ์œ ์ง€ํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•.A method of constructing a storage system in which a portion of the physically fixed buffer layer that does not overlap with the fixture is maintained in a non-adhesive state with the outer wall of the tank. ์ œ12ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 12, ์ƒ๊ธฐ ๊ณ ์ •๊ตฌ๋Š” ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๊ณ ์ •๋œ ์Šคํ„ฐ๋“œ ๋ณผํŠธ๋ฅผ ํฌํ•จํ•˜๊ณ ,The fixture includes a stud bolt fixed to the outer wall of the tank, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์ด ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๋ฐฐ์น˜๋  ๋•Œ ์ƒ๊ธฐ ์Šคํ„ฐ๋“œ ๋ณผํŠธ๊ฐ€ ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์„ ๊ด€ํ†ตํ•˜๋ฉฐ,When the buffer layer is disposed on the outer wall of the tank, the stud bolt penetrates the buffer layer, ์ƒ๊ธฐ ์Šคํ„ฐ๋“œ ๋ณผํŠธ์— ๊ณ ์ • ์™€์…”์™€ ๊ณ ์ • ๋„ˆํŠธ๊ฐ€ ์ˆœ์ฐจ์ ์œผ๋กœ ์ฒด๊ฒฐ๋˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•.Construction method of a storage system in which a fixing washer and a fixing nut are sequentially fastened to the stud bolt. ์ œ12ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 12, ์ƒ๊ธฐ ๊ณ ์ •๊ตฌ๋Š” ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๊ณ ์ •๋œ ์Šคํ„ฐ๋“œ ํ•€์„ ํฌํ•จํ•˜๊ณ ,The fixture includes a stud pin fixed to the outer wall of the tank, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์ด ์ƒ๊ธฐ ํƒฑํฌ์˜ ์™ธ๋ฒฝ์— ๋ฐฐ์น˜๋  ๋•Œ ์ƒ๊ธฐ ์Šคํ„ฐ๋“œ ํ•€์ด ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์„ ๊ด€ํ†ตํ•˜๋ฉฐ,When the buffer layer is disposed on the outer wall of the tank, the stud pin penetrates the buffer layer, ์ƒ๊ธฐ ์Šคํ„ฐ๋“œ ํ•€์— ๊ณ ์ • ์™€์…”๊ฐ€ ์ฒด๊ฒฐ๋˜๊ณ ,A fixing washer is fastened to the stud pin, ์ƒ๊ธฐ ์Šคํ„ฐ๋“œ ํ•€์ด ์ ˆ๊ณก๋˜์–ด ์ƒ๊ธฐ ์Šคํ„ฐ๋“œ ํ•€์˜ ์ผ๋ถ€๊ฐ€ ์ƒ๊ธฐ ๊ณ ์ • ์™€์…”์˜ ์œ—๋ฉด์— ๋ฐ€์ฐฉ๋˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•.The method of constructing a storage system in which the stud pin is bent so that a part of the stud pin is in close contact with the upper surface of the fixing washer. ์ œ11ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 11, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต์€ ์ƒ๊ธฐ ํƒฑํฌ์™€ ๋งˆ์ฃผํ•˜๋Š” ๋‹จ์—ด๋ถ€์™€, ์ƒ๊ธฐ ๋‹จ์—ด๋ถ€์˜ ์™ธ๋ฉด์„ ๋ฎ๋Š” ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๋ฅผ ํฌํ•จํ•˜๊ณ ,The buffer layer includes a heat insulating portion facing the tank and a first crack barrier covering an outer surface of the heat insulating portion, ์ƒ๊ธฐ ๋‹จ์—ด๋ถ€๋Š”, ์†Œํ”„ํŠธ ๋ฐœํฌ ์šฐ๋ ˆํƒ„ ํผ, ์†Œํ”„ํŠธ ๋ฐœํฌ ํด๋ฆฌ์Šคํ‹ฐ๋ Œ, ๋ฉœ๋ผ๋ฏผ ํผ, ๋ฐ ํด๋ฆฌ์—ํ‹ธ๋ Œ ํผ์œผ๋กœ ์ด๋ฃจ์–ด์ง„ ๊ตฐ์—์„œ ์„ ํƒ๋œ ์ ์–ด๋„ ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•˜๋Š” ๋‹จ์—ด์ธต๊ณผ, ์ƒ๊ธฐ ๋‹จ์—ด์ธต์˜ ๋‚ด๋ฉด๊ณผ ์™ธ๋ฉด์„ ๋ฎ๋Š” ๊ธˆ์†๋ฐ•ํŒ์„ ํฌํ•จํ•˜๋ฉฐ,The heat insulating portion includes a heat insulating layer comprising at least one selected from the group consisting of soft foamed urethane foam, soft foamed polystyrene, melamine foam, and polyethylene foam, and a metal thin plate covering inner and outer surfaces of the heat insulating layer, ์ƒ๊ธฐ ์ œ1 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๋Š” ๊ธ€๋ž˜์Šค ํด๋กœ์Šค์™€ ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ ์ค‘ ์–ด๋Š ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•.The first crack barrier construction method of a containment system including any one of a glass cloth and a glass mesh. ์ œ11ํ•ญ์— ์žˆ์–ด์„œ,The method of claim 11, ์ƒ๊ธฐ ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๋‹จ๊ณ„๋Š”,The step of forming the foam insulation layer, ์ƒ๊ธฐ ๋ฒ„ํผ์ธต ์œ„์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๊ณ , ์ƒ๊ธฐ ์ œ1 ๋ฐœํฌ ๋‹จ์—ด์ธต ์œ„์— ๊ธ€๋ž˜์Šค ํด๋กœ์Šค, ๊ธ€๋ž˜์Šค ๋ฉ”์‰ฌ, ๊ธˆ์† ๋งคํŠธ๋ฆญ์Šค(metal matrix) ์ค‘ ์ ์–ด๋„ ์–ด๋Š ํ•˜๋‚˜๋ฅผ ํฌํ•จํ•˜๋Š” ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด๋ฅผ ๋ฐฐ์น˜ํ•˜๋ฉฐ, ์ƒ๊ธฐ ์ œ2 ํฌ๋ž™ ๋ฐฐ๋ฆฌ์–ด ์œ„์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ์ œ2 ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๊ณผ์ •์„ ํฌํ•จํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•.A first foam insulation layer is formed on the buffer layer by a spray method, and a second crack barrier including at least one of a glass cloth, a glass mesh, and a metal matrix is disposed on the first foam insulation layer, and the second Construction method of a containment system comprising the process of forming a second foam insulation layer on the crack barrier by spraying. ์ œ10ํ•ญ ๋‚ด์ง€ ์ œ16ํ•ญ ์ค‘ ์–ด๋Š ํ•œ ํ•ญ์— ์žˆ์–ด์„œ,The method according to any one of claims 10 to 16, ์ƒ๊ธฐ ๋ฐœํฌ ๋‹จ์—ด์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๋‹จ๊ณ„ ์ดํ›„, ์ƒ๊ธฐ ๋ฐœํฌ ๋‹จ์—ด์ธต ์œ„์— ์Šคํ”„๋ ˆ์ด ๋ฐฉ์‹์œผ๋กœ ๊ฐ€์š”์„ฑ ๋ณดํ˜ธ์ธต์„ ํ˜•์„ฑํ•˜๋Š” ๋‹จ๊ณ„๋ฅผ ๋” ํฌํ•จํ•˜๋Š” ๊ฒฉ๋‚ฉ ์‹œ์Šคํ…œ์˜ ์‹œ๊ณต ๋ฐฉ๋ฒ•.After the step of forming the foam insulation layer, the construction method of the containment system further comprising the step of forming a flexible protective layer on the foam insulation layer by a spray method.
PCT/KR2020/010880 2019-08-14 2020-08-14 Containment system and construction method thereof Ceased WO2021029739A1 (en)

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KR102883949B1 (en) * 2020-12-17 2025-11-11 ํ•œํ™”์˜ค์…˜ ์ฃผ์‹ํšŒ์‚ฌ Insulation structure for liquified gas storage tank and method for forming the insulation structure
KR102365770B1 (en) * 2021-03-22 2022-02-24 ํ‹ฐ์•„์ด์ง€์ฝ”๋ฆฌ์•„ ์ฃผ์‹ํšŒ์‚ฌ Containment system and manufacturing method thereof
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