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GB2032087A - Securing a tank in a cradle foundation - Google Patents

Securing a tank in a cradle foundation Download PDF

Info

Publication number
GB2032087A
GB2032087A GB7930557A GB7930557A GB2032087A GB 2032087 A GB2032087 A GB 2032087A GB 7930557 A GB7930557 A GB 7930557A GB 7930557 A GB7930557 A GB 7930557A GB 2032087 A GB2032087 A GB 2032087A
Authority
GB
United Kingdom
Prior art keywords
tank
foundation
cradle
attached
retaining means
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.)
Granted
Application number
GB7930557A
Other versions
GB2032087B (en
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.)
Moss Rosenberg Verft AS
Original Assignee
Moss Rosenberg Verft AS
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 Moss Rosenberg Verft AS filed Critical Moss Rosenberg Verft AS
Publication of GB2032087A publication Critical patent/GB2032087A/en
Application granted granted Critical
Publication of GB2032087B publication Critical patent/GB2032087B/en
Expired legal-status Critical Current

Links

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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F17C13/082—Mounting arrangements for vessels for large sea-borne storage vessels
    • 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
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • 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
    • F17C2201/0128—Shape spherical or elliptical
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/0184—Attachments to the ground, e.g. mooring or anchoring
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • 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
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Coating Apparatus (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

A means for securing a cylindrical tank in a cradle foundation comprising reciprocally-shaped retaining means on the tank and foundation, respectively, whose contacting surfaces can move in the thermal contraction/expansion plane at the height at which the tank is secured. <IMAGE>

Description

SPECIFICATION Means for securing a cylindrical tank in a cradle foundation The invention pertains to a means for securing a cylindrical tank in a cradle foundation. With cylindrical tanks, including slightly conicai tanks, which are installed on board ships and used to transport cold cargo, for example, LPG, NH3 and ethylene in a liquid state, as well as LNG, problems are encountered in connection with compensating for thermal contraction/expansion.
The bolts which are used today, with spacer elements of springs, or pressure cushions, have to be of substantial dimensions in order to be able to withstand the large forces which arise, for example, in connection with floating of the tank.
Complicated, space-consuming and expensive spring assemblies or the like must be provided to compensate for the thermal expansion/ contraction.
The object of the present invention is to simplify the securing means which are required for cylindrical tanks and slightly conical tanks that are supported in cradle foundations.
In accordance with the invention, one utilizes knowledge about the direction of the plane in which points on the cylinder shell at a certain elevation will move under the influence of thermal contraction/expansion.
According to the invention, therefore, a means is provided for securing a cylindrical tank in a cradle foundation, which is characterized by comprising reciprocally-shaped retaining means on the tank and foundation, respectively, the interfacial surfaces on said retaining means being able to move in the plane of thermal contraction/expansion for the elevation at which the tank is secured.
The retaining means can comprise contiguous, mutually-cooperating plates which are attached to the tank and to the foundation, respectively. The touching plates can also be attached to the tank and foundation, respectively, by means of intermediate brackets.
To provide a downwardly-directed pressure on the tank's bracket or contact plate, the contact plate or bracket which is attached to the foundation can be fastened under tension to the foundation.
Because the sliding surface for the two contact plates lies in said thermal contraction/expansion plane, the plates will always maintain contact, independent of the temperature of the tank.
The retaining means can also comprise, in accordance with the invention, a bolt pivotally supported on the tank about an axis parallel to the axis of the cradle support, said bolt extending from its pivotable connection on the tank down toward the cradle foundation and being fastened thereto via an intermediate ball socket. The ball socket enables the bolt to pivot somewhat, such that the point where the bolt is pivotally connected to the tank can move approximately in said contraction/expansion plane.
With this invention, one has with the aid of simple means solved substantial problems in connection with compensating for thermal contraction/expansion in the retention of a tank in a cradle support.
The invention will be explained in greater detail with reference to the drawings, where Figure 1 shows parts of two adjacent cylindrical tanks, each supported in its respective cradle foundation and provided with a retaining means in accordance with the invention, while Figure 2 shows two adjacent cylindrical tanks in respective cradle foundations with a second embodiment of the retaining means.
The cross-sectional drawings in Figures 1 and 2 are purely schematic in execution and depict only those elements which are necessary for understanding the invention. The two cross sections are applicable both for a tanker having cylindrical tanks disposed on either side of the central plane, and for a tanker with cylindrical tanks lying athwartships.
In Figure 1, the bottom of a ship is designated 1 and the deck as 2, while a central longitudinal bulkhead or an athwartship bulkhead is designated 3. Arranged on the ship bottom are cradle foundations 4 and 5, and respective cylindrical tanks 6 and 7 are supported in the respective cradles. The cylindrical tanks rest on the foundations, an intermediate layer of a suitable insulating material, for example, hardwood or a balsa wood/hardwood composite (not shown) being provided between the tank and the foundation. The retaining means for the two illustrated tanks 6 and 7 are identical, and in the following discussion, therefore, only the retaining means for the tank 7 will be described further.
On the central longitudinal bulkhead or the athwartships bulkhead 3, a bracket 8 is mounted.
Fastened to the bracket is a contact plate 9. This plate slopes downwardly and outwardly, on a line with the dotted line 10 which represents the thermal contraction/expansion plane for the cylindrical shell at the height at which it is secured. Another bracket 11 is attached to the tank 7, having an associated contact plate 12 which also slopes in the same direction as the plane 10 and is in contact with the previouslymentioned contact plate 9.
Because the sliding surface for the two contiguous plates lies in said plane, the plates will always maintain contact, independent of the temperature of the tank. The bracket 8 on the longitudinal or transverse bulkhead can optionally be provided with tensioning means (not shown), such that a downwardly-directed pressure can be brought to bear on the tank's bracket.
Figure 2 shows a possible alternative embodiment, in which bolts are utilized. The bottom of the ship is in this case designated 13, the deck as 14, and a bulkhead as 1 5. The cradle supports are designated 16 and 17, respectively, while the adjacent cylindrical tanks are designated 18 and 19, respectively. Only the retaining means for the tank 19 is illustrated, but the retaining means for the adjacent tank 18 is of course formed in the same way. Also in this case, the tanks rest in the cradle foundations with a suitable intermediate insulation separating the two, for example, hardwood or a balsa/hardwood composite (not shown).
On the bulkhead 15, in the transition to the cradle support 17, a bracket 20 is attached, having a plate 21 which forms one-half of a ball socket 22. The other half of the ball socket is threaded onto a bolt 23 which passes through an opening in the plate 21, and it is fastened onto the bolt by means of a nut 24. The bolt 23 extends upwardly in the direction toward the tank 1 9 and is pivotally connected to a bracket 25 on the tank 19 by means of a pivot bolt 26 whose axis extends parallel with the axis of the cradle foundation. The pivot point which is represented by the pivot bolt 26 is located in the thermal contraction/expansion plane 27. As shown in the detail drawing inside the tank 19, two bolts 23 with associated ball sockets are provided, one bolt on each side of the bracket 25. With this bolt arrangement, one avoids having to use the otherwise conventional spring assemblies. During thermal contraction/expansion, the bolt 26 will be able to move approximately in the plane 27, such that compensation for the thermal adjustments is provided.

Claims (5)

1. A means for securing a cylindrical tank in a cradle foundation, characterized in that it comprises reciprocally-shaped retaining means on the tank and foundation, respectively, whose contacting surfaces can move in the thermal contraction/expansion plane at the height at which the tank is secured.
2. A means according to claim 1. characterized in that the retaining means comprise mutually cooperating contacting plates attached respectively to the tank and to the foundation.
3. A means according to claim 2, characterized in that the contacting plates are attached to respective brackets on the tank and foundation.
4. A means according to claims 2 or 3, characterized in that the contact plate attached to the foundation is fastened under tension to the foundation, such that a downwardly-directed pressure can be brought to bear on the tank's contact plate.
5. A means according to claim 1, characterized in that the retaining means comprises a bolt mounted on the tank so as to be pivotable about an axis parallel with the axis of the cradle foundation, said bolt extending from its pivotable tank connection down toward the foundation in a direction perpendicular to the thermal contraction/expansion plane, and being attached to the foundation via an intermediate ball socket.
GB7930557A 1978-10-03 1979-09-04 Securing a tank in a cradle foundation Expired GB2032087B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO783348A NO149787C (en) 1978-10-03 1978-10-03 DEVICE FOR MAINTENANCE OF A CYLINDER TANK IN A CREDIT FOUNDATION

Publications (2)

Publication Number Publication Date
GB2032087A true GB2032087A (en) 1980-04-30
GB2032087B GB2032087B (en) 1983-03-30

Family

ID=19884465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7930557A Expired GB2032087B (en) 1978-10-03 1979-09-04 Securing a tank in a cradle foundation

Country Status (5)

Country Link
DE (1) DE2936029A1 (en)
DK (1) DK151508B (en)
GB (1) GB2032087B (en)
NL (1) NL7906893A (en)
NO (1) NO149787C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001553A1 (en) * 1982-10-11 1984-04-26 Moss Rosenberg Verft As Saddle support
US4469236A (en) * 1981-09-04 1984-09-04 Stein Industrie Storage vessel support device
GB2359615A (en) * 2000-02-25 2001-08-29 Air Liquide Cryogenic Plant with reduced mechanical stresses
WO2007062770A3 (en) * 2005-12-01 2007-07-26 Tge Gas Engineering Gmbh Device for mounting a tank in a ship
WO2008104758A1 (en) 2007-02-26 2008-09-04 Piesold, Alexander, James Support structure
CN113734379A (en) * 2021-10-20 2021-12-03 江南造船(集团)有限责任公司 Auxiliary installation device and method for C-shaped liquid tank

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008052877A1 (en) * 2008-10-23 2010-04-29 Linde Aktiengesellschaft storage device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3154212A (en) * 1961-05-08 1964-10-27 Cryo Sonics Inc Vessel mounting system
US3152713A (en) * 1962-07-02 1964-10-13 Whessoe Ltd Vessels
FR95650E (en) * 1968-06-28 1971-03-26 Technigaz Support for self-supporting, cylindrical or spherical tank, storage or transport and its various applications.
US3583352A (en) * 1968-12-24 1971-06-08 Technigaz Supporting device for self-carrying cylindrical or spherical storage tanks and its various applications
US3792795A (en) * 1971-05-04 1974-02-19 Chicago Bridge & Iron Co Vessel or tank with supporting system
SE400943B (en) * 1977-03-31 1978-04-17 Rickardsson Ab Brdr FIXING DEVICE FOR TANK CONTAINERS WITH CIRCLES, OVAL OR MANGHORN SECTION ON VEHICLE CHASSIS AND VESSEL DECK
NO140730C (en) * 1977-12-27 1979-10-31 Kvaerner Brug Kjoleavdelning SELF-CARRIED BALL-SHAPED VESSEL LOAD TANK

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4469236A (en) * 1981-09-04 1984-09-04 Stein Industrie Storage vessel support device
WO1984001553A1 (en) * 1982-10-11 1984-04-26 Moss Rosenberg Verft As Saddle support
GB2359615A (en) * 2000-02-25 2001-08-29 Air Liquide Cryogenic Plant with reduced mechanical stresses
WO2007062770A3 (en) * 2005-12-01 2007-07-26 Tge Gas Engineering Gmbh Device for mounting a tank in a ship
CN101321662B (en) * 2005-12-01 2010-09-29 塔格海底天然气工程有限公司 Apparatus for supporting storage tanks in ships, double-leaf pressure tanks and ships
WO2008104758A1 (en) 2007-02-26 2008-09-04 Piesold, Alexander, James Support structure
CN113734379A (en) * 2021-10-20 2021-12-03 江南造船(集团)有限责任公司 Auxiliary installation device and method for C-shaped liquid tank

Also Published As

Publication number Publication date
NO149787B (en) 1984-03-12
GB2032087B (en) 1983-03-30
DK151508B (en) 1987-12-07
NO783348L (en) 1980-04-09
NO149787C (en) 1984-06-20
DK389679A (en) 1980-04-04
DE2936029A1 (en) 1980-04-24
NL7906893A (en) 1980-04-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee