US3280778A - Support in ships of tanks designed to carry low temperature liquids - Google Patents

Support in ships of tanks designed to carry low temperature liquids Download PDF

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Publication number
US3280778A
US3280778A US178776A US17877662A US3280778A US 3280778 A US3280778 A US 3280778A US 178776 A US178776 A US 178776A US 17877662 A US17877662 A US 17877662A US 3280778 A US3280778 A US 3280778A
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United States
Prior art keywords
tank
keys
stools
ship
ships
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Expired - Lifetime
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US178776A
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English (en)
Inventor
Leathard John Frederick
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WM Cory and Son Ltd
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WM Cory and Son Ltd
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Publication date
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/901—Liquified gas content, cryogenic

Definitions

  • This invention concerns the support of large size cargo tanks in ships which are to carry low temperature liquids, and wherein the tanks are separated from the main structure of the ship.
  • the problem that exists is to anchor the tanks securely so that they will not shift as the ship heaves and pitches, while at the same time allowing the tanks to undergo the considerable thermal movements that occur when the cargo is, for example, a low temperature liquefied gas like liquid methane.
  • each tank is constrained from lateral bodily movement with respect to the ships hull structure, while being left free to expand and contract laterally, by means of at least two substantially horizontal keys that connect the tank bottom to the hull structure by being secured to one and received in key-ways or channels of the other, the two keys extending across the tank bottom at an angle to one another.
  • the tank is symmetrical and mounted vertically in the ship, the invention is not limited to tanks of this shape but the principles involved may be applied to tanks of almost all shapes.
  • a necessary requirement, however, is that the bottom structure of the tank should be designed so that the supports to be described are located at strong places in the structure. In the case of cylindrical tanks this implies that the stiffening in the bottom of the tank should be radial in form.
  • FIGURE 1 is a diagram showing the arrangement of a vertical load bearing tank support for a ships liquefied gas cargo tank, and
  • FIGURE 2 is a diagram of the arrangement of a key and cooperating keyway or channel connecting the tank bottom to the ships hull structure.
  • FIGURE 1 a large ships cargo tank of upright cylindrical form to contain liquefied gas, such as liquid methane or natural gas, rests on stools 11 that stands on the ships inner bottom plating 12 and one of which is shown. These stools 11 are designed to provide acceptable insulation between the tank bottom structure and the ship structure from the point of view of heat leakage.
  • liquefied gas such as liquid methane or natural gas
  • Each stool 11 is arranged below a radial web 13 of the tank bottom and contact between the tank bottom and the stool is through the medium of a ball-dolly 14 which will allow for radial movements of the bottom of the tank relative to its central axis, while at the same time providing vertical support and minimising the heat leakage path.
  • the ball 15 of the ball-dolly 14 engages a bearing plate 16 on the underside of the tank bottom plating 17.
  • the ball-dolly 14 is carried on a steel plate 18 overlying a block of hard insulating material 19, such as that known under the registered trademark Permali, and this block is in turn supported by timber stool legs 20.
  • the legs 20 can be of pinewood for example, and they are splayed and joined near their converging upper ends by wood gussets 21.
  • a plate .ring 22 encircles the joint between the tops of the legs 20 and the block 19 for reinforcing purposes, while the lower ends of the steel legs 20 are received in steel foot bearers 23.
  • Lateral restraint for the tank is provided by two key members, preferably, but not necessarily, set at to each other and extending diametrically across the bottom of the tank.
  • the angle between the two keys and the angle at which each key is set in relation to the fore and aft centre line of the ship, are to be determined from consideration of the relative lateral restraints required due to heaving, and due to pitching, or a combination of such ship movements.
  • FIGURE 2 A particular arrangement of such a key is shown in FIGURE 2 in which contact between the tank bottom structure 10 and a stool 24 is provided through the me dium of inclined ball-dollies 25, 26, whilst the stool is designed as before to provide adequate insulation between the tank and the inner hull structure of the ship.
  • the two series of ball-dollies 25, 26 are set at an angle to the vertical, for example 35 to 40, that is selected so that lateral expansion of the tank is permitted while at the same time the desired lateral restraint is provided.
  • the key is constituted by a row of insulating blocks 27 of Permali or the like each having upwardly-converging inclined side faces 28 and downwardly-converging inclined under faces 29.
  • Each block 27 is supported on widely splayed pairs of timber stool legs 30 joined to the faces 2'9 and with their lower ends received by foot bearers 31 on the ships inner bottom 12, Adjacent pairs of stool legs 30 are tied to one another by clamping bolts 40.
  • a bent steel plate 32 forms a reinforcing cladding for the top and inclined sides 28 of the block 27, and its lower edges are extended beyond the block so as to make, together with angle bars 33 at the inside of the upper ends of the legs, the joints between the block 27 and the stool legs 30.
  • the ball-dollies 25, 26 are borne on the inclined faces of the plate 32.
  • a series of brackets 41 welded to the underside of the tank bottom plating 17 are formed with recesses 34 and carry oppositely-inclined plates 35 within these recesses at opposite sides thereof to form the keyway or channel for the key.
  • the balls 36 of the ball-dollies 25, 26 en gage bearing plates 37 borne by the plates 35.
  • the rows of stools 24- are disposed under radial webs 13 of the tank bottom structure 10, which structure also comprises circumferenti-al webs 38 and top plating 39.
  • An alternative arrangement consists in providing two metallic or hard wood keys set at suitable angles on the underside of the tank bottom which engage in channels provided in solid balsawood, or some similar form of insulation, lining the inner bottom of the vessel.
  • the outside of the bottom of the tank may be lined with solid balsawood or other suitable insulation and similar keys may engage in channels in the balsawood, these keys being attached to the inner bottom of the vessel, or
  • each stool comprises a block of a hard heat-insulating material with inclined faces and supported on timber stool legs.
  • a tank according to claim 1 wherein the tank weight is borne by stools upstanding from the ships inner bottom and disposed under radial stifieners of the tank bottom structure.
  • each stool is of a heat-insulating character and bears at its top face anti-friction means, such as a ballbearing, interposed between the stool and the underside of the tank.
  • each weightbearing stool comprises a block of a hard heat-insu1ating material supported on timber stool legs.

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  • 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)
US178776A 1961-03-10 1962-03-09 Support in ships of tanks designed to carry low temperature liquids Expired - Lifetime US3280778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8871/61A GB1007714A (en) 1961-03-10 1961-03-10 Improvements in or relating to the support in ships of tanks designed to carry low temperature liquids

Publications (1)

Publication Number Publication Date
US3280778A true US3280778A (en) 1966-10-25

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Application Number Title Priority Date Filing Date
US178776A Expired - Lifetime US3280778A (en) 1961-03-10 1962-03-09 Support in ships of tanks designed to carry low temperature liquids

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US (1) US3280778A (US07714131-20100511-C00001.png)
ES (1) ES275331A1 (US07714131-20100511-C00001.png)
GB (1) GB1007714A (US07714131-20100511-C00001.png)
NL (1) NL275641A (US07714131-20100511-C00001.png)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3677021A (en) * 1969-10-18 1972-07-18 Kvaerner Brug As Tank construction for liquified and/or compressed gas
US3680323A (en) * 1969-10-18 1972-08-01 Kvaerner Brug As Tanker for liquified and/or compressed gas
US3841253A (en) * 1973-04-12 1974-10-15 Chicago Bridge & Iron Co Horizontal support system for ship tanks for low temperature liquefied gas
USRE28411E (en) * 1970-04-30 1975-05-06 Technigaz Method and device for supporting a conveyed tank against roll and pitch
US3908574A (en) * 1974-11-22 1975-09-30 Chicago Bridge & Iron Co Sliding radial key support for LNG ship tanks
USRE29424E (en) * 1970-10-15 1977-10-04 Kvaerner Brug As Tank construction for liquified and/or compressed gas
USRE29463E (en) * 1969-10-10 1977-11-01 Kvaerner Brug A/S Tanker for liquified and/or compressed gas
US4182254A (en) * 1975-10-16 1980-01-08 Campbell Secord Tanks for the storage and transport of fluid media under pressure
US5620110A (en) * 1993-10-14 1997-04-15 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Cryobiological container
WO2005093315A1 (en) * 2004-03-05 2005-10-06 New York Bulk Carriers Inc. Support assemblies and systems for semi-membrane tanks
US20080053993A1 (en) * 2006-09-01 2008-03-06 Korea Gas Corporation Structure for liquefied natural gas storage tank
CN101134498B (zh) * 2006-09-01 2012-01-18 韩国Gas公社 用于液化天然气存储槽的结构
KR200471692Y1 (ko) 2012-08-07 2014-03-25 현대중공업 주식회사 평행 조절 장치
CN108974258A (zh) * 2018-04-17 2018-12-11 沪东中华造船(集团)有限公司 一种b型lng船围护系统支撑装置的装配方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO151842C (no) * 1982-10-11 1985-06-12 Moss Rosenberg Verft As Sadelopplagring for en liggende sylindertank

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460355A (en) * 1942-07-11 1949-02-01 Linde Air Prod Co Container for liquefied gases
US2475109A (en) * 1945-08-06 1949-07-05 Phillips Ptroleum Company Floating heat exchanger support
US2563118A (en) * 1945-02-02 1951-08-07 Pittsburgh Des Moines Company Double walled insulated tank or container for storing low-tem-perature liquefied gases
GB667215A (en) * 1949-03-30 1952-02-27 Hodges Res & Dev Co Improvements in or relating to a portable van unit
US2954003A (en) * 1957-01-16 1960-09-27 Conch Int Methane Ltd Means for transportation of low temperature liquids
US2993460A (en) * 1958-05-29 1961-07-25 California Research Corp Tank support
US3007598A (en) * 1958-06-24 1961-11-07 Conch Int Methane Ltd Tank construction
US3064612A (en) * 1960-10-20 1962-11-20 Maryland Shipbuilding And Dryd Carrier constructions for bulk fluids
US3071094A (en) * 1959-06-02 1963-01-01 Anciens Chantiers Dubigeon Sa Vessel for transporting liquefied hydrocarbons
US3072282A (en) * 1960-02-04 1963-01-08 Conch Int Methane Ltd Ship

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460355A (en) * 1942-07-11 1949-02-01 Linde Air Prod Co Container for liquefied gases
US2563118A (en) * 1945-02-02 1951-08-07 Pittsburgh Des Moines Company Double walled insulated tank or container for storing low-tem-perature liquefied gases
US2475109A (en) * 1945-08-06 1949-07-05 Phillips Ptroleum Company Floating heat exchanger support
GB667215A (en) * 1949-03-30 1952-02-27 Hodges Res & Dev Co Improvements in or relating to a portable van unit
US2954003A (en) * 1957-01-16 1960-09-27 Conch Int Methane Ltd Means for transportation of low temperature liquids
US2993460A (en) * 1958-05-29 1961-07-25 California Research Corp Tank support
US3007598A (en) * 1958-06-24 1961-11-07 Conch Int Methane Ltd Tank construction
US3071094A (en) * 1959-06-02 1963-01-01 Anciens Chantiers Dubigeon Sa Vessel for transporting liquefied hydrocarbons
US3072282A (en) * 1960-02-04 1963-01-08 Conch Int Methane Ltd Ship
US3064612A (en) * 1960-10-20 1962-11-20 Maryland Shipbuilding And Dryd Carrier constructions for bulk fluids

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29463E (en) * 1969-10-10 1977-11-01 Kvaerner Brug A/S Tanker for liquified and/or compressed gas
US3677021A (en) * 1969-10-18 1972-07-18 Kvaerner Brug As Tank construction for liquified and/or compressed gas
US3680323A (en) * 1969-10-18 1972-08-01 Kvaerner Brug As Tanker for liquified and/or compressed gas
USRE28411E (en) * 1970-04-30 1975-05-06 Technigaz Method and device for supporting a conveyed tank against roll and pitch
USRE29424E (en) * 1970-10-15 1977-10-04 Kvaerner Brug As Tank construction for liquified and/or compressed gas
US3841253A (en) * 1973-04-12 1974-10-15 Chicago Bridge & Iron Co Horizontal support system for ship tanks for low temperature liquefied gas
US3908574A (en) * 1974-11-22 1975-09-30 Chicago Bridge & Iron Co Sliding radial key support for LNG ship tanks
US4182254A (en) * 1975-10-16 1980-01-08 Campbell Secord Tanks for the storage and transport of fluid media under pressure
US5620110A (en) * 1993-10-14 1997-04-15 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Cryobiological container
US20070228045A1 (en) * 2004-03-05 2007-10-04 Goldbach Robert D Support Assemblies and Systems for Semi-Membrane Tanks
WO2005093315A1 (en) * 2004-03-05 2005-10-06 New York Bulk Carriers Inc. Support assemblies and systems for semi-membrane tanks
CN100417861C (zh) * 2004-03-05 2008-09-10 纽约散装货轮公司 半膜贮罐的支撑组件和系统
US20080053993A1 (en) * 2006-09-01 2008-03-06 Korea Gas Corporation Structure for liquefied natural gas storage tank
US20100018225A1 (en) * 2006-09-01 2010-01-28 Korea Gas Corporation Structure for liquefied natural gas storage tank
US7717289B2 (en) * 2006-09-01 2010-05-18 Korea Gas Corporation Anchor for liquefied natural gas storage tank
US7938287B2 (en) * 2006-09-01 2011-05-10 Korea Gas Corporation Structure for liquefied natural gas storage tank
CN101134498B (zh) * 2006-09-01 2012-01-18 韩国Gas公社 用于液化天然气存储槽的结构
KR200471692Y1 (ko) 2012-08-07 2014-03-25 현대중공업 주식회사 평행 조절 장치
CN108974258A (zh) * 2018-04-17 2018-12-11 沪东中华造船(集团)有限公司 一种b型lng船围护系统支撑装置的装配方法
CN108974258B (zh) * 2018-04-17 2020-11-27 沪东中华造船(集团)有限公司 一种b型lng船围护系统支撑装置的装配方法

Also Published As

Publication number Publication date
GB1007714A (en) 1965-10-22
NL275641A (US07714131-20100511-C00001.png)
ES275331A1 (es) 1962-05-16

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