US2905352A - Storage tank and means for support of same - Google Patents

Storage tank and means for support of same Download PDF

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Publication number
US2905352A
US2905352A US744278A US74427858A US2905352A US 2905352 A US2905352 A US 2905352A US 744278 A US744278 A US 744278A US 74427858 A US74427858 A US 74427858A US 2905352 A US2905352 A US 2905352A
Authority
US
United States
Prior art keywords
tanks
tank
keys
ship
keyways
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.)
Expired - Lifetime
Application number
US744278A
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English (en)
Inventor
James J Henry
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.)
CONSTOCK INT METHANE Ltd
CONSTOCK INTERNATIONAL METHANE Ltd
Original Assignee
CONSTOCK INT METHANE Ltd
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 CONSTOCK INT METHANE Ltd filed Critical CONSTOCK INT METHANE Ltd
Priority to US744278A priority Critical patent/US2905352A/en
Priority to GB19586/59A priority patent/GB853367A/en
Priority to DEC19189A priority patent/DE1193822B/de
Priority to FR797764A priority patent/FR1227729A/fr
Priority to SE5940/59A priority patent/SE313747B/xx
Application granted granted Critical
Publication of US2905352A publication Critical patent/US2905352A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • 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
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • 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

Definitions

  • This invention relates to the storage and transportation of a commodity which needs to be maintained at extremely low temperature, and it relates more particularly to the transportation of a liquefied gas in large volume in tanks which are mounted in or on a moving vehicle, such as a ship.
  • This invention will be described with reference to natural gas and its transportation in a liquefied state from a source of plentiful supply to an area where a deficiency exists wherein the liquefied gas can be revaporized to the gaseous state for use. While it is more economical to make use of a pipeline for the transmission of natural gas in a gaseous state, such pipeline operation is not economical where the source of supply is separated from the area where a deficiency exists by a large body of water. As a result, to make natural gas available in such isolated areas, it becomes necessary to confine the gas in suitable containers for transportation on a moving vehicle, such as a ship or the like. When such means of transportation is employed, it becomes wholly impractical to transport the gas while in a gaseous state.
  • the liquefied gas For transportation of the liquefied gas in large volume, it is desirable to house the liquefied gas in suitable containers maintained at about atmospheric pressure or, preferably slightly above. Natural gas is composed mostly of methane which has a boiling point at -258 F. at atmospheric pressure. However, the liquefied gas will be found to have a boiling point slightly above 258 F. because of the small amount of heavier hydrocarbons which are present, but the critical point will usually be below 240 F. Thus, the liquefied gas will have to be maintained at a temperature below 240 F. for transportation in the tanks.
  • the liquefied natural gas will be housed in large metal tanks of thousands of barrels capacity and that these tanks will be confined within a hold space of the ship which is heavily insulated on its outer walls to minimize heat loss into the tanks and corresponding loss of liquid by vaporization. It will be apparent that a number of problems exist which are peculiar to the described situation. In the use of metal tanks of such large capacity in a moving vessel, it is desirable to maintain absolute control of the movements of the tanks so as to avoid bumping or shifting movements thereof in response to the erratic movements of the transportation means, such as the pitching and rolling move ments of a ship on water. If it were otherwise, the cargocarrying tanks would themselves soon become demolished and the insulation and ship would become damaged to the end that an impractical and dangerous situation would soon develop.
  • the complexity of the problems of harnessing the tanks to hold the tanks in the insulated space is increased by the need to provide for movement of the tanks in expansion or contraction.
  • This need arrises from the fact that the tanks will be installed in the insulated ships hold while at ambient temperature, but will be reduced to a temperature within the range of about -240 to 258 F. when filled with the cargo of the liquefied natural gas.
  • Such change in temperature will naturally result in considerable contraction in the dimensions of the tanks when filled with a liquefied gas, and in corresponding expansions when the tanks are emptied and allowed to rise in temperature.
  • Figure l is a schematic sectional elevational view of a fragmentary portion of a ships construction showing the tanks in their mounted relation within the ships hold;
  • Figure 2 is a plan view of the bottom side of a cargo tank shown in Figure 1; 1
  • Figure 3 is a sectional elevational View taken along the line 33 of Figure l;
  • Figure 4 is a sectional view taken along the line 4-4 of Figure 3.
  • the transportation means comprises a ship 10 formed with an outer hull 12 and an inner hull 14 spaced a short distance inwardly and periodically connected to the outer hull to provide wing tanks in between.
  • the inner hull 14 defines the hold space 15 of the ship in which cargo tanks 18 filled with liquefied natural gas 20 are adapted to be housed for transportation of the liquefied gas at about atmospheric pressure and at a temperature of about -240 F. to 258 F. from a source of plentiful supply, where the gas is liquefied, to an area where a deficiency exists, where the liquefied gas is revaporized for use.
  • the hold space is fully insulated.
  • the tanks are mounted within the insulated hold space and then the tops of the tanks are covered with a packing of insulation material 16 such as batts of glass wool fibers, after which the space is sealed off and made inert by the displacement of air and vapor therein with nitrogen, or other inert gas.
  • the floor panels 24 f the insulatien layer are provided with elongate slots 26* extending; lengthwise of the ship in-lengthwi's'e alignment with thecenter's-of-thet'ankor tanks when measured in the direction crosswise of the ship'.
  • Onesuch elongateslot 28 is provided at the center of the' tanle to extend an equivalent distance in each direction from the center While othersspacedtheref'rom may comprise a single slot but are preferably formed as a series of spaced slots in endwise alignment.
  • Each of the tanks 18 is formed-with corresponding keys-30 which-extend downwardly from the bottom wall of the tank and are dimensioned to-be received within the slots.
  • the keys are dimensioned to have a width corresponding t'o-the' width of the slots topermit the keys to be received in fitting relationship within the slots;
  • the center key 3011 is dimensioned to" have a length corresponding tothe length of the center slot 2'8; but the remainder of the keys aredimensioned to have a length lessthan the lengths of'tlie corresponding slots 25 so-that the keys will be received within the slots in a manner topermit relativeendwise movement but not relative crosswise movement.
  • the amount of relative-movements in other portionsof the tank responsive to contractions and expansions increases in proportion: with the distance from the center, thus the slots or keyways spaced from the center are formed to a length greater than-the corresponding key received thereinto permit displacement of the key in the lengtl iwise direction withinthe slotin accordance withthe lengthwise movement of the tank relative to the center, while still retainingoperativeengagement between the keys and keyways in the crosswise direction to resist sidewise thrust generated by the tossing ship.
  • the floor 24 formedof panels-ofbalsw'wood; paper honeycomb or the like insulation panels, isconstructed with hardwood sections 34 in the portions lengthwise aligned with the centers of the tanks.
  • the hardwood is formed to a depth greater than the distance of the slots or keyways 26 to provide a high strength", wear-resistant surface in contact with: the keys'of the tanks;'-
  • the depth?v of: the keys 30 and the keyways-l6?- is not critical since the bottom of the tanks will generally rest upon the floor notwithstanding, expansions and contractions in the vertical direction; *(firdin'arily, keys form'editoa depth. of about 1 /2 to 3 inches will be suflicient, with a corresponding or greater depthiin therkeywaya.
  • a similar key and keyway construction can be employed to intercoimfthe top ofth'e tanks with the framework of the ship.
  • the keyways will be provided i'ntheform ofwooden or metallic members secured to the framework of the ship'with' the slotted portionextending downwardly into sliding engagement with" keys formed to extend upwardly from" the top wall of the tanks rscompensate for the" expansion and" contraction of the tank in the vertical direction, the keys; and keyways should he dimensioned so that the key will extend into-the" key-way, at normal temperature; for'a distance greater than the amount of contraction calculated to take place" in the tank sothat the keys will remaininthe keyways'wh'en thetank is reduced to open atingtemperatureby the liquid carg'cr
  • usei will" be' made of tanks of rectangular shape for more efiicient utilization.
  • the tanks' are formed of rectangular, square, round, oblong" or of'oth'er shapes in cross-section.
  • means for supporting the tank in the insulated space in a manner which minimizes displacement ofthe tank from. a pr'edetermined'position while permitting free-expansion and contraction of the tank in response to temperature change comprising a-tank having a relatively flat bottom wall which is adapted to rest upon the floor of the insulated" space, keys extending downwardly from the bottom wall of the tank in lengthwise alignment withthe center of' the tank with one of said keys disposed in the center portion of the tank, keyways.
  • sai'd' keyways being dimensioned to have a width corresponding to the width of the keys to receive the keys therein in fitting relation
  • the center keyway being dimensioned to have a length corresponding to the length of the center key to receive the latter therein in fittingv relation
  • the other keyways being dimensioned to: have a length greater than the corresponding keys received there in to enable displacement of the keys in the keyways responsive to contraction and expansion. of the tank.
  • An assembly as claimed in claim 1 which includes similar keys in the top wall of the tank and similar keyways in the adjacent supporting structure in which the keys are received to position the upper end portion 10 of the tank in the insulated space in a manner to permit free expansion and contraction movements.

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)
US744278A 1958-06-24 1958-06-24 Storage tank and means for support of same Expired - Lifetime US2905352A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US744278A US2905352A (en) 1958-06-24 1958-06-24 Storage tank and means for support of same
GB19586/59A GB853367A (en) 1958-06-24 1959-06-08 Means for the storage and transportation of a commodity which needs to be maintained at low temperature
DEC19189A DE1193822B (de) 1958-06-24 1959-06-11 Schiff fuer den Transport von verfluessigten tiefsiedenden Gasen
FR797764A FR1227729A (fr) 1958-06-24 1959-06-17 Réservoir de stockage et de transport d'un liquide devant être maintenu à une température extrêment basse
SE5940/59A SE313747B (en:Method) 1958-06-24 1959-06-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US744278A US2905352A (en) 1958-06-24 1958-06-24 Storage tank and means for support of same

Publications (1)

Publication Number Publication Date
US2905352A true US2905352A (en) 1959-09-22

Family

ID=24992123

Family Applications (1)

Application Number Title Priority Date Filing Date
US744278A Expired - Lifetime US2905352A (en) 1958-06-24 1958-06-24 Storage tank and means for support of same

Country Status (5)

Country Link
US (1) US2905352A (en:Method)
DE (1) DE1193822B (en:Method)
FR (1) FR1227729A (en:Method)
GB (1) GB853367A (en:Method)
SE (1) SE313747B (en:Method)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039418A (en) * 1958-12-16 1962-06-19 Shell Oil Co Tankers
US3064612A (en) * 1960-10-20 1962-11-20 Maryland Shipbuilding And Dryd Carrier constructions for bulk fluids
US3067713A (en) * 1959-09-05 1962-12-11 Kieler Howaldtswerke A G Freighter for liquid gases
US3071094A (en) * 1959-06-02 1963-01-01 Anciens Chantiers Dubigeon Sa Vessel for transporting liquefied hydrocarbons
US3072088A (en) * 1960-05-24 1963-01-08 Conch Int Methane Ltd Cold cargo transportation means
US3082726A (en) * 1958-07-09 1963-03-26 Conch Int Methane Ltd Insulated floor construction and elements
US3085538A (en) * 1958-06-24 1963-04-16 Conch Int Methane Ltd Ship for the transportation of a liquefied gas
US3095107A (en) * 1961-03-16 1963-06-25 Conch Int Methane Ltd Stabilization means for storage tanks
US3115984A (en) * 1960-07-29 1963-12-31 Conch Int Methane Ltd Ship's tank with multiple compartments
DE1175254B (de) * 1960-08-03 1964-08-06 Conch Int Methane Ltd Einrichtung zum Lagern oder Transportieren tiefsiedender verfluessigter Gase
DE1177660B (de) * 1960-07-12 1964-09-10 Chantiers De L Atlantique Penh Behaelter zur Lagerung und zum Transport, beispielsweise auf einem Schiff, von verfluessigten Gasen bei tiefen Temperaturen
DE1187650B (de) * 1960-03-22 1965-02-25 & Chantiers De La Seine Mariti Tank zur Lagerung oder zum Transport tiefsiedender verfluessigter Gase
DE1192543B (de) * 1962-07-28 1965-05-06 Weser Ag Vorrichtung fuer eine Waermebewegung zulassende Abstuetzung von Ladegutbehaeltern in Frachtschiffen
DE1197484B (de) * 1960-05-27 1965-07-29 Conch Int Methane Ltd Einrichtung zum Lagern oder Transportieren tiefsiedender verfluessigter Gase bei etwa Atmosphaerendruck
US3305122A (en) * 1964-09-04 1967-02-21 Exxon Research Engineering Co Keyed cargo container
DE1274144B (de) * 1962-11-02 1968-08-01 Linde Ag Waermeisolierter Speicherbehaelter fuer tiefsiedende Fluessiggase
US3425583A (en) * 1966-09-07 1969-02-04 Mcmullen John J Arrangement for keying liquefied gas storage tanks within a transport vessel
US5531178A (en) * 1993-05-27 1996-07-02 Ishikawajima-Harima Heavy Industries Co., Ltd. Support structure for self-standing storage tank in liquified gas carrier ship
WO2011053156A1 (en) * 2009-10-29 2011-05-05 Aker Engineering & Technology As Supports anchored with ribs
WO2012139599A1 (de) * 2011-04-14 2012-10-18 Nordic Yards Wismar Gmbh Lageranordnung an einem selbsttragenden tank für kalte oder kryogene flüssigkeiten
US11441731B2 (en) * 2019-07-01 2022-09-13 The Boeing Company Pressure vessel having substantially flat panel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1177661B (de) * 1963-03-08 1964-09-10 Linde Eismasch Ag Halterung eines Fluessiggastankes in Fahrzeugen, insbesondere in Schiffen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL124440C (en:Method) * 1956-05-07

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3085538A (en) * 1958-06-24 1963-04-16 Conch Int Methane Ltd Ship for the transportation of a liquefied gas
US3082726A (en) * 1958-07-09 1963-03-26 Conch Int Methane Ltd Insulated floor construction and elements
US3039418A (en) * 1958-12-16 1962-06-19 Shell Oil Co Tankers
US3071094A (en) * 1959-06-02 1963-01-01 Anciens Chantiers Dubigeon Sa Vessel for transporting liquefied hydrocarbons
US3067713A (en) * 1959-09-05 1962-12-11 Kieler Howaldtswerke A G Freighter for liquid gases
DE1187650B (de) * 1960-03-22 1965-02-25 & Chantiers De La Seine Mariti Tank zur Lagerung oder zum Transport tiefsiedender verfluessigter Gase
US3072088A (en) * 1960-05-24 1963-01-08 Conch Int Methane Ltd Cold cargo transportation means
DE1197484B (de) * 1960-05-27 1965-07-29 Conch Int Methane Ltd Einrichtung zum Lagern oder Transportieren tiefsiedender verfluessigter Gase bei etwa Atmosphaerendruck
DE1177660B (de) * 1960-07-12 1964-09-10 Chantiers De L Atlantique Penh Behaelter zur Lagerung und zum Transport, beispielsweise auf einem Schiff, von verfluessigten Gasen bei tiefen Temperaturen
US3115984A (en) * 1960-07-29 1963-12-31 Conch Int Methane Ltd Ship's tank with multiple compartments
US3150797A (en) * 1960-08-03 1964-09-29 Conch Int Methane Ltd Container for storing or transporting liquefied gases at low temperature
DE1175254B (de) * 1960-08-03 1964-08-06 Conch Int Methane Ltd Einrichtung zum Lagern oder Transportieren tiefsiedender verfluessigter Gase
US3064612A (en) * 1960-10-20 1962-11-20 Maryland Shipbuilding And Dryd Carrier constructions for bulk fluids
US3095107A (en) * 1961-03-16 1963-06-25 Conch Int Methane Ltd Stabilization means for storage tanks
DE1192543B (de) * 1962-07-28 1965-05-06 Weser Ag Vorrichtung fuer eine Waermebewegung zulassende Abstuetzung von Ladegutbehaeltern in Frachtschiffen
DE1274144B (de) * 1962-11-02 1968-08-01 Linde Ag Waermeisolierter Speicherbehaelter fuer tiefsiedende Fluessiggase
US3305122A (en) * 1964-09-04 1967-02-21 Exxon Research Engineering Co Keyed cargo container
US3425583A (en) * 1966-09-07 1969-02-04 Mcmullen John J Arrangement for keying liquefied gas storage tanks within a transport vessel
US5531178A (en) * 1993-05-27 1996-07-02 Ishikawajima-Harima Heavy Industries Co., Ltd. Support structure for self-standing storage tank in liquified gas carrier ship
WO2011053156A1 (en) * 2009-10-29 2011-05-05 Aker Engineering & Technology As Supports anchored with ribs
CN102667305A (zh) * 2009-10-29 2012-09-12 阿克工程和技术公司 用肋锚定的支撑件
US8783502B2 (en) 2009-10-29 2014-07-22 Aker Engineering & Technology As Supports anchored with ribs
WO2012139599A1 (de) * 2011-04-14 2012-10-18 Nordic Yards Wismar Gmbh Lageranordnung an einem selbsttragenden tank für kalte oder kryogene flüssigkeiten
US11441731B2 (en) * 2019-07-01 2022-09-13 The Boeing Company Pressure vessel having substantially flat panel

Also Published As

Publication number Publication date
GB853367A (en) 1960-11-02
SE313747B (en:Method) 1969-08-18
FR1227729A (fr) 1960-08-24
DE1193822B (de) 1965-05-26

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