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WO2021111623A1 - Structure de type flottant - Google Patents

Structure de type flottant Download PDF

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Publication number
WO2021111623A1
WO2021111623A1 PCT/JP2019/047867 JP2019047867W WO2021111623A1 WO 2021111623 A1 WO2021111623 A1 WO 2021111623A1 JP 2019047867 W JP2019047867 W JP 2019047867W WO 2021111623 A1 WO2021111623 A1 WO 2021111623A1
Authority
WO
WIPO (PCT)
Prior art keywords
hull
floating structure
module
storage tank
overhanging
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/JP2019/047867
Other languages
English (en)
Japanese (ja)
Inventor
維史 金山
直彦 岸本
圭史 谷川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JGC Corp
Original Assignee
JGC Corp
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 JGC Corp filed Critical JGC Corp
Priority to PCT/JP2019/047867 priority Critical patent/WO2021111623A1/fr
Priority to CN201980099835.8A priority patent/CN114286780A/zh
Publication of WO2021111623A1 publication Critical patent/WO2021111623A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid

Definitions

  • the present invention relates to a floating structure obtained by modifying an existing LNG carrier.
  • An object of the present invention is to provide a floating structure that can be constructed at low cost and with a short delivery time.
  • the floating structure of the present invention A floating structure modified from a liquefied gas carrier equipped with a hull equipped with a membrane-type or self-supporting square storage tank. With the hull An overhanging portion fixed to the hull portion and overhanging at least one side in the width direction of the hull portion, It is provided with a gas treatment facility arranged in the overhanging portion.
  • the overhanging portion and the gas treatment facility are portions added at the time of remodeling. In this way, the floating structure can be constructed at low cost and in a short delivery time by expanding the overhanging portion and the gas treatment facility by using the existing liquefied gas carrier as it is. Further, by providing the overhanging portion, it is possible to secure a sufficient space for arranging the gas treatment equipment.
  • the floating structure of the present invention is
  • the gas treatment facility is composed of modules.
  • the gas treatment equipment can also be configured by modules.
  • the floating structure of the present invention is
  • the module has a protrusion that projects onto the hull. By projecting the module onto the hull in this way, the space on the hull can be effectively used.
  • the floating structure of the present invention is
  • the hull part is the disembarkation part to which the overhanging part is fixed, and It is provided with an upper hull portion that protrudes above the lower hull portion and constitutes the upper part of the storage tank.
  • the upper hull portion is provided with a hull inclined portion that inclines downward toward the lower hull portion at an end portion in the width direction of the upper hull portion.
  • the protruding portion protrudes toward the upper hull portion, Below the protruding portion, a module inclined portion that inclines upward along the inclined portion of the hull is formed.
  • the floating structure of the present invention is It is provided with a plurality of columns to support the module. All struts are arranged on the overhang. That is, the module is placed on the strut at the overhang. Therefore, the overhanging portion can be designed in advance so as to have the strength to support the module, and the reinforcement work of the hull portion for supporting the module becomes unnecessary.
  • the floating structure of the present invention is It is provided with a plurality of columns to support the module. Some of the stanchions are arranged on the hull and the remaining stanchions are arranged on the overhangs. That is, according to the above configuration, the load of the module can be distributed to the hull portion and the overhanging portion, so that the module can be supported in a well-balanced and stable manner. Further, since a part of the weight of the module can be supported by the hull portion, the strength of the overhanging portion itself and the fixing strength to the hull portion can be reduced, and the construction cost of the overhanging portion can be reduced.
  • the floating structure of the present invention is The pillars on the hull side are arranged on the ship side outer plate constituting the hull side. As a result, the load received by the support column is transmitted to the ship-side outer plate having a higher strength than the other parts, so that the support column can be firmly supported.
  • the floating structure of the present invention is The module is formed with the storage tank extending in the width direction of the hull portion. As a result, the hollow on the storage tank can be effectively used.
  • the floating structure of the present invention is A floating structure modified from a liquefied gas carrier equipped with a hull equipped with a membrane-type or self-supporting square storage tank.
  • the module is arranged on the storage tank in the width direction of the hull portion, supported by columns arranged on both sides of the storage tank. This is the part where the module was added at the time of remodeling.
  • FIG. 1 is a schematic view of the floating structure 2 according to the embodiment viewed from above
  • FIG. 2 is a schematic view of the floating structure 2 as viewed from the front (direction of arrow A shown in FIG. 1).
  • the floating structure 2 is a unidirectionally long structure having a hull portion 4 as a main body, which is called a hull.
  • the floating structure 2 according to the embodiment is a modified LNG carrier 26 (see FIG. 3) as an existing liquefied gas carrier.
  • the floating structure 2 is used as a marine plant.
  • Such equipment includes FPSO (floating production storage and shipping equipment) that produces, stores, and ships oil and natural gas, and FSO (floating production storage and shipping equipment) that does not have production equipment and only stores and ships. ), FSU (floating production storage facility) that only stores.
  • FPSO floating production storage and shipping equipment
  • FSU floating production storage facility
  • FLNG floating production liquefied natural gas production facility
  • LNG liquefied natural gas
  • the floating structure 2 is FLNG as an example.
  • the floating structure 2 does not have a self-propelled function, and when it moves, it is towed by a power ship.
  • the hull part 4 uses the hull part 4 of the existing LNG carrier 26 (see FIG. 3).
  • the hull portion 4 is provided with a ballast tank 10 inside the hull side 8 and the bottom 9 which is a space for injecting seawater or the like in order to adjust the weight of the hull portion 4 and balance the hull portion 4.
  • the hull portion 4 is equipped with a storage tank 12 for storing liquefied natural gas.
  • the type of the storage tank 12 is defined by "The International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code)" issued by the IMO (International Maritime Organization).
  • ITC Code International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk
  • IMO International Maritime Organization
  • Specific types are a spherical type called Moss type and a square type called Membrane type, which is integrated with the hull by attaching a thin film tank material inside the hull.
  • Various types are known, such as a self-supporting square type in which the hull and the square tank are separated and independent.
  • the membrane type storage tank 12 will be described as an example, but the storage tank 12 may be a self-supporting square type. In the present embodiment, the storage tank 12 having an octagonal cross section is illustrated, but the storage tank 12 may be non-spherical and is not limited to the octagonal shape.
  • the hull unit 4 includes a disembarkation unit 41 that accommodates the storage tank 12, and an upper hull unit 18 that projects above the disembarkation unit 41 and constitutes the upper part of the storage tank 12.
  • the disembarkation body portion 41 includes a ship side outer plate 40 forming an outer shell of the ship side 8 and a ship bottom outer plate 42 forming an outer shell of the ship bottom 9.
  • the upper hull portion 18 includes hull inclined portions 18a that incline downward toward the lower hull portion 41 at both ends of the upper hull portion 18 in the width direction. That is, the peripheral edge of the upper hull portion 18 is inclined downward corresponding to the inclined portion of the upper end portion of the storage tank 12.
  • the width direction of the upper hull portion 18 coincides with the width direction of the hull portion 4.
  • overhanging portions 14 projecting to the outside of the hull portion 4 are fixed.
  • the overhanging portion 14 is fixed to the disembarking body portion 41.
  • a waste oil tank, an additional ballast tank, and the like are provided inside the overhanging portion 14. Further, a space on the overhanging portion 14 where the module 16 described later is not arranged is used as a device storage place or the like.
  • a gas treatment facility for treating gas is arranged on the overhanging portion 14.
  • a natural gas processing facility is arranged on the overhanging portion 14 as a gas processing facility.
  • a module 16 used as a natural gas processing facility is arranged on the overhanging portion 14.
  • the module 16 is a structure equipped with equipment and pipes for processing natural gas. After the module 16 is installed on the overhanging portion 14, the devices and pipes in the adjacent modules 16 are connected to each other as needed to form a natural gas processing facility.
  • the module 16 is supported by a support column 17 called a stool arranged on the overhanging portion 14.
  • the stanchion 17 includes a first stanchion 17a located on the hull 4 side in the width direction of the hull 4 and a second stanchion 17b located on the opposite side of the hull 4 side. Both the first support column 17a and the second support column 17b are lined up in a row at predetermined intervals along the longitudinal direction of the hull portion 4.
  • the overhanging portion 14, the module 16 which is a natural gas processing facility, and the support columns 17 (first support column 17a, second support column 17b) are included in the extension portion described later.
  • the module 16 has a protruding portion 16a protruding above the hull portion 4. Below the protruding portion 16a, a module inclined portion 16b that inclines upward toward the hull portion 4 side is formed. In the present embodiment, the protruding portion 16a protrudes toward the upper hull portion 18, and the module inclined portion 16b is inclined upward along the hull inclined portion 18a of the upper hull portion 18.
  • the module 16 By projecting the module 16 toward the hull portion 4 in this way, the space on the hull portion 4 can be effectively used. Further, by forming the module inclined portion 16b below the module 16, the module 16 can be projected in accordance with the hull inclined portion 18a of the upper hull portion 18, and the hull inclined portion 18a of the upper hull portion 18 is inclined. Space can be used without waste.
  • a residential area 20 equipped with a sailor's room, a kitchen, etc. is arranged on the floating structure 2.
  • the LNG carrier 26 equipped with the membrane type or self-supporting square type storage tank 12 is towed by a towing ship such as a tugboat and docked in the dock 24 as shown in FIG. 3A.
  • a towing ship such as a tugboat and docked in the dock 24 as shown in FIG. 3A.
  • the seawater in the dock 24 is drained and the LNG carrier 26 is landed on the bottom of the culvert.
  • the overhanging portions 14 are carried into both sides of the hull portion 4 of the LNG carrier 26 in the width direction.
  • the overhanging portion 14 is added to the hull portion 4.
  • a support column 17 is arranged on the overhanging portion 14, and the module 16 is usually mounted on the overhanging portion 14 by a crane.
  • a rail 29 for transferring the module 16 is provided on the support column 17.
  • the module 16 is appropriately carried into the dock 24.
  • the module 16 is transferred to a lift 30 located in the vicinity of the dock 24, and then the lift 30 rises to the same level as the rail 29, as shown in FIG. 4 (b).
  • the module 16 is installed on the overhanging portion 14 as shown in FIG. 4 (c).
  • Such a transfer process is called jack-up and skidding, and is sometimes adopted as one of the module mounting methods.
  • the remodeling of the LNG carrier 26 is completed, and the floating structure 2 obtained by remodeling the LNG carrier 26 is completed.
  • the dock 24 is injected with water, the floating structure 2 is launched and docked, and is towed to the destination by a towing vessel. Natural gas processing takes place at this destination.
  • a known pretreatment for removing impurities from natural gas and a known liquefaction treatment for liquefying the pretreated natural gas are carried out in a natural gas processing facility.
  • the floating structure 2 can be constructed at low cost and in a short delivery time by expanding the overhanging portion 14, the module 16, etc. by using the existing LNG carrier as it is. it can. Further, by providing the overhanging portion 14, a sufficient space for arranging the module 16 can be secured.
  • the overhanging portion 14 should be designed in advance so as to have the strength to support the module 16. This eliminates the need for reinforcement work on the hull portion 4 to support the module 16. Further, even when reinforcement work on the hull portion 4 side of the overhanging portion 14 is required, the support column 17 (first support column 17a) does not get in the way. Therefore, the reinforcement work can be easily performed.
  • the first support column 17a and the second support column 17b are arranged on the overhanging portion 14 in the width direction of the hull portion 4
  • the first support column 17a may be arranged on the hull portion 4. That is, a part of the columns 17 may be arranged on the hull portion 4.
  • the load of the module 16 can be distributed to the hull portion 4 and the overhanging portion 14, so that the module 16 can be supported in a well-balanced and stable manner.
  • the strength of the overhanging portion 14 itself and the fixing strength to the hull portion 4 can be reduced, and the construction cost of the overhanging portion 14 can be reduced. can do. Further, since the distance between the columns 17 in the width direction of the hull portion 4 is widened, the module 16 can be stably supported.
  • the first support column 17a may be arranged on the ship side outer plate 40 constituting the ship side 8 of the hull portion 4.
  • the ship side outer plate 40 has higher strength than the portion where the storage tank 12 is installed. Therefore, the load received by the first support column 17a is directly transmitted to the ship-side outer plate 40, and the first support column 17a can be firmly supported.
  • the modules 16 are arranged on the overhanging portions 14 on both sides of the hull portion 4 in the width direction.
  • the module 16 may have the storage tank 12 formed over the width direction of the hull portion 4.
  • each module 16 arranged in the overhanging portion 14 may be connected on the storage tank 12.
  • the hollow on the storage tank 12 can also be effectively used.
  • the columns 17 are arranged on both sides of the storage tank 12 in the width direction of the hull portion 4, and the overhanging portion is provided. It is not necessary to provide 14.
  • the support column 17 is preferably installed on the ship side outer plate 40, and the module 16 is supported by the support column 17 arranged on both sides of the storage tank 12.
  • the module 16 can be installed by utilizing the space above the hull portion 4, and the cost and man-hours when remodeling the existing LNG carrier 26 can be significantly reduced.
  • the overhanging portions 14 are provided on both sides of the hull portion 4 is described as an example, but the overhanging portion 14 is only on one side of the hull portion 4. It may be provided in.
  • both the first support column 17a and the second support column 17b are lined up in a row at predetermined intervals along the longitudinal direction of the hull portion 4 is illustrated. It does not necessarily have to be arranged in this way.
  • the columns 17 may be arranged without distinction between the first column 17a and the second column 17b.
  • the module 16 is a natural gas processing facility
  • the module 16 may include a module 16 used in addition to the natural gas processing facility.
  • the floating structure 2 having no self-propelled function has been described as an example, but the means of moving the floating structure 2 is not particularly limited, and the floating structure 2 is not particularly limited.
  • the object 2 may have a self-propelled function.
  • the module 16 includes a high-temperature module in which a device for pretreating natural gas before liquefaction is installed and a low-temperature module in which a device for liquefying natural gas is installed. May be provided.
  • the high temperature module may be arranged on one side in the width direction of the hull portion 4, and the low temperature module may be arranged on the other side. Further, two low temperature modules may be provided, and one system may be arranged on each side of the storage tank 12.
  • the module inclined portion 16b may be arranged along the hull inclined portion 18a, and may have a shape inclined as a whole due to a step, for example. Good. In short, the module inclined portion 16b may have a shape that can effectively utilize the dead space by arranging the module inclined portion 16b along the hull inclined portion 18a.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

La présente invention vise à fournir une structure de type flottant qui peut être construite à faible coût et dans un temps de distribution court. À cet effet, l'invention concerne une structure de type flottant montée ultérieurement sur un navire porteur de gaz liquéfié comportant une partie de coque dans laquelle un réservoir de stockage de type membrane ou de type prismatique autoportant est monté, la structure de type flottant comprenant la partie de coque, une partie en saillie qui est fixée à la partie de coque et qui fait saillie vers au moins un côté dans la direction de largeur de la partie de coque, et une installation de traitement de gaz positionnée dans la partie en saillie, la partie en saillie et l'installation de traitement de gaz étant des parties qui sont ajoutées pendant le montage ultérieur.
PCT/JP2019/047867 2019-12-06 2019-12-06 Structure de type flottant Ceased WO2021111623A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2019/047867 WO2021111623A1 (fr) 2019-12-06 2019-12-06 Structure de type flottant
CN201980099835.8A CN114286780A (zh) 2019-12-06 2019-12-06 浮体式结构物

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/047867 WO2021111623A1 (fr) 2019-12-06 2019-12-06 Structure de type flottant

Publications (1)

Publication Number Publication Date
WO2021111623A1 true WO2021111623A1 (fr) 2021-06-10

Family

ID=76221174

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/047867 Ceased WO2021111623A1 (fr) 2019-12-06 2019-12-06 Structure de type flottant

Country Status (2)

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CN (1) CN114286780A (fr)
WO (1) WO2021111623A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017121832A (ja) * 2016-01-05 2017-07-13 石田造船株式会社 車輌等運搬用船舶の上部構造とそれを備えた車輌等運搬用船舶
KR20190000689U (ko) * 2017-09-08 2019-03-18 현대중공업 주식회사 액화가스 부유식 생산저장하역설비 및 액화가스 운반선

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO331660B1 (no) * 2008-11-19 2012-02-20 Moss Maritime As Anordning for flytende produksjon av LNG og fremgangsmate for a konvertere et LNG-skip til en slik anordning
SG190424A1 (en) * 2010-11-30 2013-06-28 Single Buoy Moorings Floating lng plant
CN202138515U (zh) * 2011-05-13 2012-02-08 大连理工大学 一种由运输型船舶改装成的半潜船
SG11201702837QA (en) * 2014-10-08 2017-05-30 Sbm Schiedam Bv Lng carrier vessel, and method for manufacturing such an lng carrier vessel
KR20180095724A (ko) * 2016-01-12 2018-08-27 엑셀러레이트 리쿼팩션 솔루션즈, 엘엘씨 천연가스 액화 선박

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017121832A (ja) * 2016-01-05 2017-07-13 石田造船株式会社 車輌等運搬用船舶の上部構造とそれを備えた車輌等運搬用船舶
KR20190000689U (ko) * 2017-09-08 2019-03-18 현대중공업 주식회사 액화가스 부유식 생산저장하역설비 및 액화가스 운반선

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Publication number Publication date
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