US3766876A - Container for liquefied gases at cryogenic temperatures - Google Patents

Container for liquefied gases at cryogenic temperatures Download PDF

Info

Publication number
US3766876A
US3766876A US00085101A US3766876DA US3766876A US 3766876 A US3766876 A US 3766876A US 00085101 A US00085101 A US 00085101A US 3766876D A US3766876D A US 3766876DA US 3766876 A US3766876 A US 3766876A
Authority
US
United States
Prior art keywords
primary tank
drip pan
girders
tank
spray shield
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
US00085101A
Other languages
English (en)
Inventor
W Cowles
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
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 Exxon Research and Engineering Co filed Critical Exxon Research and Engineering Co
Application granted granted Critical
Publication of US3766876A publication Critical patent/US3766876A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • 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
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat end-piece
    • 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
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • 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
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 m3)
    • 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
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • 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
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/013—Reinforcing means in the vessel, e.g. columns
    • 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
    • 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
    • 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
    • F17C2203/0362—Thermal insulations by liquid means
    • F17C2203/0366—Cryogen
    • 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
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0617—Single wall with one layer
    • 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
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • 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
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0631—Three or more walls
    • 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
    • F17C2203/0646—Aluminium
    • 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
    • F17C2203/0648—Alloys or compositions of 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
    • 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
    • F17C2205/0134—Two or more vessels characterised by the presence of fluid connection between vessels
    • F17C2205/0142—Two or more vessels characterised by the presence of fluid connection between vessels bundled in parallel
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • 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
    • F17C2209/221—Welding
    • 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
    • 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
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/013—Reducing manufacturing time or effort
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/031—Dealing with losses due to heat transfer
    • F17C2260/033—Dealing with losses due to heat transfer by enhancing 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/036—Avoiding leaks
    • 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
    • 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
    • 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
    • Y10S220/918—Spacing element for separating the walls of a spaced-wall container

Definitions

  • a device for containing liquefied gases at cryogenic temperatures in a tanker vessel.
  • the container device includes a primary tank for containing the liquefied gas and a drip pan formed as an integral partof and below the primary tank for collecting and retaining quantities of the liquefied gas that may leak through the primary tank and for providing support for the primary tank.
  • a spray shield acting as a liquid tight barrier is spaced apart from and structurally supported by'the primary tank.
  • the drip pan includes a plurality of apertures in fluid communication with the 114/74 A, 220/9 LG v B63b 25/16 114/74 A, 74R, 74 T;
  • This invention relates to insulated containers and more particularly to an improved minimum cost, maximum safety, insulated container suitable for the storage of liquefied gases at atmospheric pressure and cryogenic temperatures in a tanker vessel.
  • Prior art tank designs that have incorporated drip pans to collect seepage have required the complete installation of the drip pan and the adjacent hull structure before the installation of the primary tank is begun. This construction sequence has been because the primary tank and the drip pan have often been of different materials and shapes, or because the drip pan has been attached to and/or supported by the inner hull of the ship. Use of these construction procedures may result in damage to the drip pan and theadjacent ship structure in the subsequent installation of the primary tank.
  • Another object is to provide such a cargo container that is easy and inexpensive to install.
  • the present invention provides a liquefied gas container that meets the highest safety standards while retaining the economical features of single-wall tank construction.
  • the container includes a primary tank for containing the liquefied gas and a drip pan, formed below and as an integral part of the primary tank.
  • the drip pan collects and retains liquefied gas that leaks through the primary tank, and provides support for the bottom of the primary tank.
  • the drip pan is constructed of the same material as the primary tank, the erection of the primary tank and construction of the adjacent ship structure can proceed simultaneously. It is. therefore not necessary, as with prior art arrangements, to complete construction of the adjacent ship structure and the drip pan before the erection of the primary tank is commenced. As a result, thedrip pan and adjacent ship structure are notsubject to damage during construction of the primary tank.
  • the primary tank and the drip pan are preferably cylindrical in shape, and'the primary tank is preferably defined by a substantially conical top.
  • Such cylindrical construction uses material more efficiently for any given volume of storage capacity than other shapes, such as prismatic tanks,,for example. Further, cylindrical tanks are far easier and less expensive to construct than other previously used shapes.
  • a cylindrical tank uses about 30 percent less material than a prismatic tank for any given volume of storage capacity, and less expensive material is required since material in plate form is less expensive than profile sections.
  • Cylindrical tanks are also easier to construct than sphericaltanks because no compound forming is required, fewer welded joints are needed, and structural fit-up, staging, and erection is easier.
  • the container device of this invention includes a secondary barrier structure which includes the drip'pan vided within the drip pan space to provide structural I reinforcement as well as to provide baffles to minimize motion of any liquefied gas that might have leaked from the primary tank and collected in the drip pan.
  • the present invention includes a primary tank of predetermined wall thickness for containingliquefied gas, a drip' pan coextensive with .the primary tank and formed as an integral part of and below the primary tank for collecting and retaining quantities of the liquefied gas that may leak through the primary tank and for supporting the primary tank; a spray shield larger than and substantially similar in shape to the primary tank surrounding the lateral wallsand top and spaced from the primary tank for deflecting seepage from upper portions of the primary tank, the spray shield extending down below the bottom of the primary tank in partial spaced relation relative to the lateral walls of the drip pan; thermally conductive structural means in fixed spaced relation around the primary tank for holding the spray shieldin position and for maintaining a low thermal gradient between the primary tank and the spray shield; and thermal insulation applied externally to the drip pan and to the spray shield.
  • the walls of the drip pan are of a thickness substantially equal to the thickness of the walls of the primary tank and the drip pan extends only directly beneath the primary tank to act as an integral support.
  • apertures are provided in the drip pan in fluid communication with the space between the primary tank and the spray shield for enabling the passage of seepage from upper portions of the primary tank through the space and into the drip pan.
  • Keying means are also provided in operative relationship with the hull and the container for permitting relative movement between them, to avoid transmission of stresses from the hull to the container.
  • Supports are also located between the drip pan and the hull for transmitting the static load of the container and liquefied gas cargo to the tankers hull.
  • the supports include a stool piece secured to the hull of the tanker and a bearing member secured to the underside of the drip pan and resting on the stool piece in sliding surface-to-surface contact.
  • This arrangement permits unrestrained movement of the primary tank as it undergoes dimensional changes resulting from cooling to thetemperatures of the liquefied gas or warming to ambient temperature.
  • FIG. 1 is a top plan view of a tanker vessel incorporating the containers of this invention
  • FIG. 2 is a cross-section taken substantially on the line 2-2 in FIG. 1;
  • FIG. .3 is across-section taken substantially on the line 3-3 of FIG. 1;
  • FIG. 4 is a fragmentary cross-section taken substantially on the line 44 in FIG. 1;
  • FIG. 5 is a fragmentary cross-section taken substantially on the line 55 in FIG. 4;
  • FIG. 6 is a fragmentary cross-section taken substantially on the line 66'of FIG. 4;
  • FIG. 7 is an expanded detailed view of the structural means separating the primary tank and the spray shield of the invention.
  • FIG. 8 is partially a schematic and partially a fragmentary cross-section taken substantially on the line 8-8 in FIG. 1;
  • FIG. 9 is a fragmentary cross-section taken substantially on the line 9-9 in FIG. 8;
  • FIG. 10 is a top plan view of an alternative embodiment of a container showing one keying arrangement
  • FIG. 1 1 is a fragmentary cross-section taken substantially on the line l1ll in FIG. 10;
  • FIG. 12 is a fragmentary cross-section taken substantially on the line l2-12 in FIG. 11;
  • FIG. 13 is a cross-section taken substantially on the line 13--l3 in FIG. 3;
  • FIG. 14 shows an alternative embodiment of the arrangement shown in FIG. 13.
  • FIG. 15 shows an alternative embodiment of the structure shown in FIGS. 13 and 14.
  • FIGS. 1 and 2 a tanker vessel 20 having an outer hull 22 and a plurality of containers 24 for storing liquefied gases at cryogenic temperatures in accordance with this invention.
  • the tanker is of conventional form and material and may be of a complete double skin type or may be of single skin construction with a double bottom and upper ballast tanks (not shown) as necessary to provide proper operating draft and stability characteristics in the ballast condition.
  • Containers 24 are preferably cylindrical in configuration and are vertically oriented with the vertical central axis of the containers located on the longitudinal center line of the tanker.
  • a primary tank of predetermined wall thickness is provided for containing liquefied gas.
  • primary tank 26 (FIG. 3) is preferably constructed with a substantially conical top 28 and with a dome 30 protruding through the upper deck 32 of the tanker.
  • Tank 26 may be constructed of aluminum alloy, 9 percent nickel-steel, or other material having suitable physical properties for containment of the liquefied gas cargo at cryogenic temperatures.
  • the tank wall is preferably designed as a membrane structure and is essentially unstiffened, except as necessary to limit stresses due to local bending, or the effects of dynamic loads.
  • a drip pan is formed as an integral part of and below the primary tank for collecting and retaining quantities of the liquefied gas that may leak through the primary tank and for supporting the primary tank.
  • drip pan 34 is made of the same material as primary tank 26.
  • the drip pan extends only directly beneath the primary tank and the walls of the drip pan are of a thickness substantially equal to the predetermined wall thickness of primary tank 26.
  • the drip pan is also cylindrical in shape so as to extend only directly beneath the primary tank and to have a minimum surface area.
  • the erection of the primary tank and drip pan can proceed simultaneously with the construction of I the adjacent ship structure. It is not necessary to first complete the drip pan and the adjacent ship structure, and the drip pan and the adjacent shipstructure are not subject to damage by later erection of the primary tank.
  • a spray shield is provided partially surrounding and spaced from the primary tank for deflecting seepage from upper portions of the primary tank into the drip pan.
  • the spray shield is larger than and substantially similar in shape to the primary tank.
  • the spray shield is a thin sheet or sheets 36 (FIGS. 3 and 4) and is constructed of the same material as the primary tank.
  • Thermally conductive structural means are provided in fixed spaced relation around the primary tank for holding the spray shield in position and for maintaining a low thermal gradient between the primary tank and the spray shield.
  • the thermally conductive structural means are furring or spacing members 38 (FIGS. 6 and 7) that are secured to primary tank 26 by threaded studs 40.
  • Members 38 can, of course, also be secured to tank 26 by welding or any other conventional securing arrangement.
  • the spacing members are made of thermally conductive metal or other suitable material so that primary tank 26 and spray shield 36 operate at substantially the same temperature, with no substantial thermal gradient between them.
  • Thermal insulation 42 (FIGS. 4-7) of polyurethane foam, P.V.C. foam, fiberglass, or similar materials, is secured to the outer surface of spray shield 36 and drip pan 34 to avoid overcooling and embrittlement of the ships hull.
  • Sheathing 44 is applied to the outside surface of insulation 42 to protect it from physical damage or water in the event a leak develops in an adjacent ballast tank (not shown) or the ships hull.
  • This sheathing may be of aluminum, plywood, or similar material.
  • Spray shield 36 is preferably constructed of the same material as the primary tank and may be welded, bolted, riveted or otherwise secured to the spacing members 38. Insulation 42 may be applied by spraying or, in the alternative, fixed to the spray shield and drip pan in a series of panels.
  • the drip pan 34 is made of sufficient depth to permit easy access to it for construction and inspection.
  • the drip pan includes a cylindrical side surface 50 (FIG. 4) that is co-planar with the sides of primary container 26.
  • a plurality of apertures 52 are provided in side wall 50, and in fluid communication with the space 54 between primary tank 26 and spray shield 36 for enabling the passage of seepage from upper portions of the primary tank through space 54 and into drip pan 34.
  • the drip pan space56 includes a plurality of girders 58 (FIGS. 4, 5, 13, 14, and that extend between drippan 34 and the bottom .60 of primary tank 26. These girders act to strengthen the container as well as to minimize motion of any liquified gas that has seeped into the drippan from the primary tank and include spaced apertures 61 (FIGS. 4 and 5 adjacent the lower surfaceof the drip pan. Of course, the minimization of motion of the liquefied gas in the drip pan contributes to stability of the ship.
  • FIGS. 13-15 illustrate a configurationin which girders 58 are spaced in para]- l el relationship to one another.
  • FIG. 14 shows an alternative embodiment wherein the girders are arranged in a radial configuration emanating from the center of the primary tank, and
  • FIG. 15 illustrates still another embodiment wherein the girders are in spaced annular configuration.
  • one set of keys 74 (FIG. 13) are provided between the bottom of drip pan 34 and the inner bottom 76 (FIG. 3) ofthe ship, and another set 78 (FIGS. 8 and 9) is located between the sides of dome 30 and the adjacent structure of the ships deck 32.
  • the bottom set of keys comprises one key/keyway arrangement 74-75 at the longitudinal centerline of the ship to restrain athwartship motion of the primary tank. Another key/keyway arrangement is located at the transversecenterline of the primary tank to secure the tank against longitudinal motion. Similarly, tank dome 30 is secured against relative motion by means of keys 78 located in keyways 80.
  • the keys need not necessarily be oriented in line with the principal axes of the ship, nor need they be limited to the two sets at the top and bottom described. Additional sets may be provided either at the top or bottom of primary tank 26, if desired, to reduce unit bearing loads, or the orientation may be varied for optimum efficiency or to achieve a desirable relationship with adjacent ship structure.
  • FIGS. 10-12 An alternative key-keyway arrangement is shown in FIGS. 10-12, and includes a plurality of keyways 84 integral with/or structurally connected to the conical top surface 28 of'primary tank 26. Keys 82 are provided in integral relationship with/or structurally coupled to the ship structure.
  • Supports are provided between the drip pan and the hull of the tanker for transmitting the static load of the container and liquefied gas cargo to the tankers hull.
  • the supports include a stool piece from cooling (to the temperatures of the liquefied gas) Keying means are also provided in operative relationor warming (to ambient temperature). Either the stool piece or the bearing member, or both, may befaced witha material especially suited as a bearing/sliding surface to permit unrestrained movement of primary tank 26.
  • FIGS. 14 and 15 Alternative arrangements of the supports may be provided as illustrated in FIGS. 14 and 15. In FIG. 14
  • the supports are provided beneath and in line with radially extending girders 58, and in FIG. 15 the supports are provided'beneath and in line with the spaced annular configuration of girders 58.
  • Still another strengthened embodiment (not shown) combines the radially extending girders (FIG. 14) with the annular configuration of girders (FIG. 15), and supports are provided beneath and in line with each of these girders.
  • Another feature strengthens the overall structure and particularly the bottom keys 74 by locating reinforcing girders (not shown) within keys 74 and directly below and in line with the annularly positioned girders 58 of FIG. 15.
  • a nitrogen atmosphere in the space 100 (FIG. 8) surrounding the container, in the space 54 between primary tank 26 and spray shield 36, and within the drip pan.
  • a nitrogen atmosphere may be provided by nitrogen source 102 connected to pump 104 which feeds nitrogen under pressure through conduit 106 into the spaces 100 and 54.
  • the present invention provides for a unique container for liquefied gases at cryogenic temperatures for use in a tanker.
  • the invention in its broader aspects is not limited to the Specific details shown and described and departures may be made from such details without departing fromthe principles of the invention and without sacrificing its chief advantages.
  • a device for containing liquefied gases at cryogenic temperatures in a tanker comprising:
  • a primary tank for containing the liquefied gas
  • a drip pan formed as an integral part of and below said primary tank for collecting and retaining liquefied gas that leaks from said primary tank and for supporting said primary tank, said drip pan extending only directly beneath said primary tank and having apertured side walls coextensive with the side walls of said primary tank;
  • a spray shield which is structurally separate from, larger than and substantially similar in shape to said primary tank, said shield surrounding and spaced from said primary tank for deflecting seepage from upper portions of said primary tank into said drip pan through its apertured side walls which are in fluid communication with the space between said primary tank and said spray shield;
  • thermally conductive structural means in fixed spaced relation around said primary tank for holding said spray shield in position and for maintaining a low thermal gradient between said primary tank and said spray shield;
  • a device as in claim 1 further including:
  • keying means in operative relationship with the tankers hull and said container device for permitting relative movement between said hull and the container device.
  • a device as in claim 3 further including:
  • a device as in claim 1 including a plurality of girders extending between the lower surfaces of said primary tank and said drip pan and wherein said girders include spaced apertures therein whereby said girders strengthen said container device and act as baffles to minimize motion of said liquefied gas within the drip pan.
  • said drip pan comprises substantially thesame material as said primary tank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US00085101A 1970-10-29 1970-10-29 Container for liquefied gases at cryogenic temperatures Expired - Lifetime US3766876A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8510170A 1970-10-29 1970-10-29

Publications (1)

Publication Number Publication Date
US3766876A true US3766876A (en) 1973-10-23

Family

ID=22189472

Family Applications (1)

Application Number Title Priority Date Filing Date
US00085101A Expired - Lifetime US3766876A (en) 1970-10-29 1970-10-29 Container for liquefied gases at cryogenic temperatures

Country Status (3)

Country Link
US (1) US3766876A (it)
FR (1) FR2110099A5 (it)
NO (1) NO129971B (it)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882809A (en) * 1973-11-30 1975-05-13 Chicago Bridge & Iron Co Storage vessel for ship transport of liquefied gas
US4345861A (en) * 1978-11-24 1982-08-24 Harald Aarseth Universal tank and ship support arrangement
US6668561B1 (en) * 2002-06-27 2003-12-30 Northrop Grumman Corporation Pressure regulated structure
US20090071174A1 (en) * 2007-09-18 2009-03-19 T. Baden Hardstaff Ltd. Storage tank assembly
US20090199760A1 (en) * 2007-12-03 2009-08-13 Nli Innovation As Liquefied gas tank with a central hub in the bottom structure
US20110006093A1 (en) * 2007-02-26 2011-01-13 Jahre Group As Support structure
KR101345806B1 (ko) * 2011-07-21 2013-12-27 삼성중공업 주식회사 액화가스 저장탱크 및 이를 포함하는 선박
CN103562061A (zh) * 2011-05-25 2014-02-05 三星重工业株式会社 液货储罐及包括该储罐的船舶
KR101370067B1 (ko) * 2011-10-26 2014-03-06 삼성중공업 주식회사 액화물 저장탱크 및 이를 포함하는 선박
AU2008332002B2 (en) * 2007-12-03 2014-07-10 Nli Innovation As A liquefied gas tank with a central hub in the bottom structure
US9045194B2 (en) 2012-08-09 2015-06-02 Martin Operating Partnership L.P. Retrofitting a conventional containment vessel into a complete integral tank double-hull cargo containment vessel
US9302562B2 (en) 2012-08-09 2016-04-05 Martin Operating Partnership L.P. Heating a hot cargo barge using recovered heat from another vessel using an umbilical

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018018A (en) * 1958-07-01 1962-01-23 Conch Int Methane Ltd Tank for storing low boiling temperature liquids
US3110157A (en) * 1960-09-12 1963-11-12 Conch Int Methane Ltd Transportation of cold liquids and safety means
US3319431A (en) * 1966-05-25 1967-05-16 Exxon Research Engineering Co Double walled cryogenic tank
US3339515A (en) * 1965-07-06 1967-09-05 Phillips Petroleum Co Atmospheric pressure storage and transportation of volatile liquids
US3547301A (en) * 1968-02-21 1970-12-15 Conch Ocean Ltd Tanker for liquefied gases

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018018A (en) * 1958-07-01 1962-01-23 Conch Int Methane Ltd Tank for storing low boiling temperature liquids
US3110157A (en) * 1960-09-12 1963-11-12 Conch Int Methane Ltd Transportation of cold liquids and safety means
US3339515A (en) * 1965-07-06 1967-09-05 Phillips Petroleum Co Atmospheric pressure storage and transportation of volatile liquids
US3319431A (en) * 1966-05-25 1967-05-16 Exxon Research Engineering Co Double walled cryogenic tank
US3547301A (en) * 1968-02-21 1970-12-15 Conch Ocean Ltd Tanker for liquefied gases

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882809A (en) * 1973-11-30 1975-05-13 Chicago Bridge & Iron Co Storage vessel for ship transport of liquefied gas
US4345861A (en) * 1978-11-24 1982-08-24 Harald Aarseth Universal tank and ship support arrangement
US6668561B1 (en) * 2002-06-27 2003-12-30 Northrop Grumman Corporation Pressure regulated structure
US20110006093A1 (en) * 2007-02-26 2011-01-13 Jahre Group As Support structure
US8910487B2 (en) * 2007-09-18 2014-12-16 T. Baden Hardstaff Ltd. Storage tank assembly for cryogenic liquids
US20090071174A1 (en) * 2007-09-18 2009-03-19 T. Baden Hardstaff Ltd. Storage tank assembly
US20090199760A1 (en) * 2007-12-03 2009-08-13 Nli Innovation As Liquefied gas tank with a central hub in the bottom structure
AU2008332002B2 (en) * 2007-12-03 2014-07-10 Nli Innovation As A liquefied gas tank with a central hub in the bottom structure
US8091494B2 (en) * 2007-12-03 2012-01-10 Nli Innovation As Liquefied gas tank with a central hub in the bottom structure
CN103562061A (zh) * 2011-05-25 2014-02-05 三星重工业株式会社 液货储罐及包括该储罐的船舶
JP2014514212A (ja) * 2011-05-25 2014-06-19 サムスン ヘビー インダストリーズ カンパニー リミテッド 液化物貯蔵タンク及びこれを含む船舶
EP2716538A4 (en) * 2011-05-25 2015-12-09 Samsung Heavy Ind STORAGE CONTAINER FOR LIQUID MATERIALS AND SHIP THEREFOR
US9234629B2 (en) 2011-05-25 2016-01-12 Samsung Heavy Ind. Co., Ltd. Storage tank for liquified materials and ship comprising same
CN103562061B (zh) * 2011-05-25 2016-03-02 三星重工业株式会社 液货储罐及包括该储罐的船舶
KR101345806B1 (ko) * 2011-07-21 2013-12-27 삼성중공업 주식회사 액화가스 저장탱크 및 이를 포함하는 선박
KR101370067B1 (ko) * 2011-10-26 2014-03-06 삼성중공업 주식회사 액화물 저장탱크 및 이를 포함하는 선박
US9045194B2 (en) 2012-08-09 2015-06-02 Martin Operating Partnership L.P. Retrofitting a conventional containment vessel into a complete integral tank double-hull cargo containment vessel
US9302562B2 (en) 2012-08-09 2016-04-05 Martin Operating Partnership L.P. Heating a hot cargo barge using recovered heat from another vessel using an umbilical
US9555870B2 (en) 2012-08-09 2017-01-31 Martin Operating Partnership L.P. Heating a cargo barge using recovered energy from another vessel using an umbilical

Also Published As

Publication number Publication date
NO129971B (it) 1974-06-17
FR2110099A5 (it) 1972-05-26

Similar Documents

Publication Publication Date Title
US3319431A (en) Double walled cryogenic tank
EP0013624B1 (en) Land storage tank arrangement for liquids
US5727492A (en) Liquefied natural gas tank and containment system
US4182254A (en) Tanks for the storage and transport of fluid media under pressure
US3859805A (en) Flat bottom ship tank for transport of liquefied gas
US3766876A (en) Container for liquefied gases at cryogenic temperatures
US3680323A (en) Tanker for liquified and/or compressed gas
US3213632A (en) Ship for transporting liquefied gases and other liquids
JP6050836B2 (ja) 液化天然ガス（ｌｎｇ）の格納容器のための構成
US3875886A (en) Liquified-gas ship
US3692205A (en) Drip pan lng tank
EP2583023B1 (en) Support of tanks in vessels
US3978808A (en) Double wall cargo tank for transporting cryogenics
US3583351A (en) Vessel for transporting liquefied hydrocarbon
KR20210141525A (ko) 단열 밀봉 탱크
US3312076A (en) Drip pan lng tank
US3337079A (en) Stressed membrane liquified gas container
US3882809A (en) Storage vessel for ship transport of liquefied gas
US3903824A (en) Liquefied gas ship tank insulation system
US3477606A (en) Membrane tank structures
USRE29463E (en) Tanker for liquified and/or compressed gas
US3339515A (en) Atmospheric pressure storage and transportation of volatile liquids
WO2009067017A1 (en) Cylindrical tank for transport and storage of chilled, liquified gas on a floating unit, with provisions for reducing liquid movements and absorbing deformations due to variations of the internal load
KR101686507B1 (ko) 액화천연가스 저장탱크
KR20170025819A (ko) 액화가스 화물창 및 그 액화가스 화물창을 구비하는 운반선