WO2023199428A1 - 液化ガス貯蔵タンク - Google Patents

液化ガス貯蔵タンク Download PDF

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Publication number
WO2023199428A1
WO2023199428A1 PCT/JP2022/017703 JP2022017703W WO2023199428A1 WO 2023199428 A1 WO2023199428 A1 WO 2023199428A1 JP 2022017703 W JP2022017703 W JP 2022017703W WO 2023199428 A1 WO2023199428 A1 WO 2023199428A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
tank
space
liquefied gas
pressure
Prior art date
Application number
PCT/JP2022/017703
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
宏之 武田
崇公 三好
晴彦 冨永
麻子 三橋
宏輔 関
まり子 高須賀
Original Assignee
川崎重工業株式会社
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 川崎重工業株式会社 filed Critical 川崎重工業株式会社
Priority to KR1020247031699A priority Critical patent/KR20240154603A/ko
Priority to JP2024515233A priority patent/JPWO2023199428A1/ja
Priority to PCT/JP2022/017703 priority patent/WO2023199428A1/ja
Priority to CN202280094347.XA priority patent/CN118946499A/zh
Publication of WO2023199428A1 publication Critical patent/WO2023199428A1/ja

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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
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • 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
    • F17C13/001—Thermal insulation specially adapted for cryogenic 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
    • 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
    • F17C13/04—Arrangement or mounting of valves
    • 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
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 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
    • F17C2203/03—Thermal insulations
    • F17C2203/0375—Thermal insulations by 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
    • 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
    • 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
    • F17C2205/0323—Valves
    • 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
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Definitions

  • the present disclosure relates to liquefied gas storage tanks.
  • a double-shell tank that includes an inner tank and an outer tank as a tank for storing liquefied gas, such as cryogenic liquefied hydrogen.
  • liquefied gas such as cryogenic liquefied hydrogen.
  • high heat insulation can be achieved by providing a space (space between the inner and outer tanks) outside the inner tank in which the liquefied gas is stored.
  • an object of the present disclosure is to reliably block communication between the internal tank space and the space between the inner and outer tanks as necessary in a liquefied gas storage tank having a double structure. There is a particular thing.
  • the liquefied gas storage tank includes: A tank for storing liquefied gas, A tank body comprising: an inner tank that forms a storage space for the liquefied gas inward; and an outer tank that covers the inner tank and forms a heat insulating layer filled with the liquefied gas between the inner tank and the inner tank; , a communication path that communicates the space within the inner tank and the space between the inner and outer tanks; is provided in the communication passage and is set to open when the pressure in the space between the inner and outer tanks decreases to a predetermined value, or when the difference between the pressure in the inner tank space and the pressure in the inner tank space decreases to a predetermined value. and the first valve, a second valve provided in the communication passage in series with the first valve and configured to be able to open and close the communication passage; Equipped with.
  • FIG. 1 is a schematic diagram showing an example of a liquefied gas storage tank according to an embodiment of the present disclosure.
  • FIG. 2 is an enlarged schematic diagram of a part of the liquefied gas storage tank of FIG. 1 illustrating one mode of use of the tank.
  • FIG. 2 is an enlarged schematic view of a part of the liquefied gas storage tank of FIG. 1 to show another mode of use of the tank.
  • FIG. 1 shows a liquefied gas storage tank (hereinafter simply referred to as "tank”) 1 according to an embodiment of the present disclosure.
  • This tank 1 includes a tank body 3 that stores liquefied gas LG, a communication passage 5, a first valve 7, and a second valve 9, which will be described later.
  • the tank 1 is installed on a ship S, such as a liquefied gas storage ship.
  • a ship S such as a liquefied gas storage ship.
  • the liquefied gas storage ship in this embodiment is a liquefied gas carrier.
  • liquefied gas storage ships include, for example, liquefied gas fuel ships, bunkering ships that supply liquefied gas to other ships, and the like.
  • the tank 1 according to the present disclosure may be installed in a liquefied gas storage facility other than a ship, such as a ground liquefied gas storage facility or a plant that uses liquefied gas.
  • the liquefied gas LG stored in the tank 1 is, for example, liquefied ammonia (LNH 3 , about -33°C), liquefied petroleum gas (LPG, about -45°C), liquefied ethylene gas (LEG, about -100°C), liquefied These are natural gas (LNG, approximately -160°C), liquefied hydrogen (LH 2 , approximately -250°C), and liquefied helium (LHe, approximately -270°C).
  • liquefied hydrogen is stored in the tank 1.
  • the tank 1 is configured as a double shell tank having an inner tank 11 and an outer tank 13.
  • the tank body 3 includes an inner tank 11 that forms a storage space (hereinafter referred to as "inner tank space”) 15 for liquefied gas LG inwardly, and an inner tank 11 that covers the inner tank 11. and an outer tank 13 that forms a space (hereinafter referred to as "space between inner and outer tanks”) 17 filled with vaporized gas of the liquefied gas LG.
  • the outer peripheral surfaces of the inner tank 11 and the outer tank 13 may each be covered with a heat-insulating layer.
  • This tank 1 is normally operated in a state in which vaporized gas of liquefied gas is sealed in a space 17 between the inner and outer tanks, which is a heat insulating layer.
  • the tank body 3 has a body portion 3a that is a portion that accommodates the liquefied gas LG, and a dome portion 3b that projects upward from the body portion 3a.
  • the main body portion 3a is covered by a tank cover 23 that is a part of the hull 21 of the ship S.
  • the top wall of the tank cover 23 is formed with an opening through which the dome portion 3b is inserted. Through the opening of the tank cover 23, the dome portion 3b protrudes above the tank cover 23, that is, is exposed.
  • the dome portion 3b has a cylindrical side wall 25 extending substantially vertically, and a substantially hemispherical lid 27 that closes the upper opening of the side wall 25.
  • Various types of piping such as a plurality of transport pipes 29 for transporting (loading and unloading) the liquefied gas LG to and from the tank 1 are attached to the dome portion 3b.
  • a plurality of transport pipes 29 for transporting (loading and unloading) the liquefied gas LG to and from the tank 1 are attached to the dome portion 3b.
  • only one transport pipe 29 is shown for simplification.
  • the transport pipe 29 penetrates the lid 27 of the dome portion 3b in a substantially vertical direction.
  • the figure shows the above-mentioned transport pipe 29 as an example of a pipe extending to the outside of the tank 1 through the dome part 3b, but such a pipe does not carry vaporized gas.
  • piping such as transportation pipes.
  • a communication path 5 is provided that communicates the inner tank space 15 with the inner and outer tank space 17. Via the communication path 5, vaporized gas BG of the liquefied gas LG generated in the inner tank space 15 is introduced into the inner and outer tank space 17 at appropriate timing.
  • the gas introduction path for introducing the vaporized gas BG from an external liquefied gas source into the space 17 between the inner and outer tanks may be connected to the communication path 5 or provided independently from the communication path 5. good.
  • first predetermined pressure value a predetermined value on the communication path 5
  • first predetermined pressure difference a predetermined value on the communication path 5
  • first valve 7 is a safety valve that is set to automatically open when the first predetermined pressure difference is exceeded.
  • the first valve 7 opens when a first predetermined pressure difference is reached, and then the pressure in the space 17 between the inner and outer tanks reaches a predetermined pressure difference (hereinafter referred to as a "second predetermined pressure difference") with respect to the pressure in the inner tank space 15. It is configured to close when the pressure rises to less than the pressure difference (').
  • a second valve 9 separate from the first valve 7 is further provided on the communication path 5 in series with the first valve 7.
  • the second valve 9 is configured as a valve that can open and close the communication passage 5.
  • the second valve 9 is operated to open the first valve 7 even though the pressure in the inner tank space 15 has decreased to a second predetermined pressure difference or less with respect to the pressure in the space 17 between the inner and outer tanks after the first valve 7 is opened. It is provided for the purpose of closing the communicating path 5 when the valve 7 fails to close.
  • the second valve 9 is configured as a remote control valve.
  • the remote-controlled valve may be any type of valve as long as it is electrically opened and closed by a control signal, such as an electric valve, a solenoid valve, or a diaphragm-operated valve.
  • a remote control valve as the second valve 9
  • the second valve 9 can be closed in a short time after detecting that the first valve 7 cannot be closed when it should be closed.
  • the second valve 9 does not have to be a remote control valve. That is, the second valve 9 may be a valve that can be closed by direct operation.
  • the second valve 9 is provided on the primary side of the first valve 7. With this configuration, the second valve 9 is closed on the upstream side of the first valve 7, so communication between the inner tank space 15 and the inner and outer tank space 17 can be more reliably blocked.
  • the second valve 9 may be provided on the secondary side of the first valve 7.
  • only one second valve 9 is provided, but a plurality of second valves 9 may be provided. In that case, the second valve 9 may be provided on each of the primary side and the secondary side of the first valve 7. Further, a plurality of communication passages 5 and first valves 7 may be provided.
  • a gas discharge path 31 is provided to discharge the gas in the space 17 between the inner and outer tanks to the outside of the tank 1.
  • the gas discharge path 31 is provided with a third valve 33 that is set to open at a predetermined pressure or higher.
  • the third valve 33 is configured as a safety valve that automatically opens at a predetermined pressure or higher.
  • the tank 1 includes an inner tank space pressure detection device 35 that detects the pressure in the inner tank space 15, and an inner tank space pressure detection device 35 that detects the pressure in the space 17 between the inner tank and the outer tank. It is provided with a space pressure detection device 37, an inner tank space temperature detection device 39 that detects the temperature of the inner tank space 15, and an inner and outer tank space temperature sensor 41 that detects the temperature of the space 17 between the inner and outer tanks.
  • detection devices consist of a sensor element that detects the physical quantity (pressure, temperature) to be detected, various circuits that perform necessary processing such as signal conversion processing and arithmetic processing on the acquired detected quantity, and information necessary for these processing.
  • the device is equipped with a memory for storing the data, a power source circuit such as a power supply element such as a battery or a power supply circuit for receiving power supply from the outside, a transmission circuit for transmitting the output signal to the outside by wire or wirelessly, and the like.
  • a power source circuit such as a power supply element such as a battery or a power supply circuit for receiving power supply from the outside
  • a transmission circuit for transmitting the output signal to the outside by wire or wirelessly, and the like.
  • the tank 1 may be provided with various detection devices necessary for the operation of the tank 1. Furthermore, it is not essential to provide the detection devices 35, 37, 39, and 41 exemplified above, and only those necessary for the operation of the tank 1 may be provided.
  • the second valve 9 By providing the second valve 9, after the first valve 7 is opened as shown in FIG.
  • the pressure of the inner tank increases to a second predetermined pressure difference or less with respect to the pressure of the inner tank space 15 and the inner tank does not close even though it should be closed, or when it cannot close even if you try to close it manually, etc.
  • the second valve 9 is used to close the communication passage 5 as shown in FIG. 2B, and the pressure in the space 17 between the inner and outer tanks exceeds the predetermined operating pressure. It can be prevented from rising.
  • first valve 7 and the second valve 9 are located above the base end 3ba of the dome portion 3b, that is, the boundary between the main body portion 3a and the dome portion 3b. More specifically, in this embodiment, the first valve 7 and the second valve 9 are located on the sides of the dome portion 3b.
  • a portion of the communication pipe forming the communication path 5 is exposed to the outside of the dome portion 3b from the side wall 25 of the portion of the dome portion 3b that projects upwardly of the tank cover 23. .
  • a first valve 7 and a second valve 9 are provided in the exposed portion of the communication passage 5 located on the side of the dome portion 3b.
  • the liquefied gas LG transport pipe 29 penetrates upward from the lid 27 of the dome portion 3b. This is to efficiently arrange piping and piping accessories such as various valves in the limited space of the dome part 3b, and to transfer the liquefied gas LG, which is the cargo of the tank 1, within the required cargo handling time.
  • first valve 7 and the second valve 9 are provided are not limited to the example described above.
  • one or both of the first valve 7 and the second valve 9 may be located above the dome portion 3b, or may be located below the base end 3ba of the dome portion 3b.
  • the third valve 33 is also located above the base end 3ba of the dome portion 3b of the tank 1, specifically on the side of the dome portion 3b.
  • the arrangement of the third valve 33 is not limited to this example either.
  • the arrangement of the transport pipes 29 is not limited to the illustrated example. Further, it is not essential to provide the dome portion 3b in the tank 1.
  • the second valve 9 is opened based on the pressure or temperature of at least one of the inner tank space 15 and the space 17 between the inner and outer tanks. Close. Specifically, the fact that the first valve 7 is not closed as set is detected by, for example, one or both of the inner tank space pressure detection device 35 and the inner and outer tank space pressure detection device 37 shown in FIG.
  • the second valve 9 can be closed based on the determined pressure value. Instead of or in addition to pressure detection, the first valve 7 closes based on the temperature value detected by either or both of the inner tank space temperature detection device 39 and the outer and outer tank space temperature detection device 41.
  • the second valve 9 may be closed after determining that the second valve 9 is not being used. In this way, the second valve can be closed at an appropriate timing by making a judgment based on at least one of the pressure and temperature of the inner tank space 15 and/or the outer and outer tank space 17.
  • FIG. 1 shows an independent double-shell tank 1 formed independently of the hull 21 as an example of the tank 1, the structure of the tank 1 is not limited to this example, and may be of any type.
  • the tank 1 may have a multiple heat-insulating structure.
  • the tank 1 may be of a type that is formed integrally with the hull 21.
  • the multiple heat insulation structure of the tank 1 may be a three-layer or more structure.
  • the second valve 9, which can be closed when the first valve 7 does not close is provided in the communication path 5. Therefore, after the first valve 7 is opened, the pressure in the space 17 between the inner and outer tanks increases until it becomes equal to or less than the second predetermined pressure difference with respect to the pressure in the inner tank space 15, and the valve 7, which should normally be closed, increases. If the communication passage 5 remains open, for example, if it does not close despite the above operation, or if it cannot be closed even if you try to close it manually, the second valve 9 is used to close the communication passage 5, and the inner and outer tanks are closed. It is possible to prevent the pressure in the interspace 17 from rising excessively beyond a predetermined operating pressure.
  • the second valve 9 may be a remote control valve. With this configuration, the second valve 9 can be closed in a short time after detecting that the first valve 7 cannot be closed when it should be closed.
  • the second valve 9 may be provided on the primary side of the first valve 7. With this configuration, the second valve 9 is closed on the upstream side of the first valve 7, so that communication between the inner tank space 15 and the inner and outer tank space 17 can be more reliably shut off.
  • the tank body 3 has a main body part 3a that is a part that accommodates the liquefied gas LG, and a dome part 3b that projects upward from the main body part 3a.
  • the first valve 7 and the second valve 9 may be located above the base end 3ba of the dome portion 3b. Furthermore, at least one of the first valve 7 and the second valve 9 may be located on the side of the dome portion 3b.
  • a gas exhaust path 31 is provided for discharging the gas in the space 17 between the inner and outer tanks to the outside, and the gas exhaust path 31 is provided so that the pressure in the space 17 between the inner and outer tanks is equal to or higher than a predetermined value. It may also include a third valve 33 that is set to open when the With this configuration, it is possible to more reliably prevent the pressure in the space 17 between the inner and outer tanks from becoming excessive.
  • the method of operating the liquefied gas storage tank 1 is a method of operating the liquefied gas storage tank 1 described above, in which when the first valve 7 is open, the inner tank space 15 and the space between the inner and outer tanks are This includes closing the second valve 9 based on at least one of the pressure and temperature of at least one of the spaces 17.
  • the second valve can be closed at an appropriate timing by making a judgment based on at least one of the pressure and temperature of the inner tank space 15 and/or the outer and outer tank space 17.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
PCT/JP2022/017703 2022-04-13 2022-04-13 液化ガス貯蔵タンク WO2023199428A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020247031699A KR20240154603A (ko) 2022-04-13 2022-04-13 액화가스 저장탱크
JP2024515233A JPWO2023199428A1 (enrdf_load_stackoverflow) 2022-04-13 2022-04-13
PCT/JP2022/017703 WO2023199428A1 (ja) 2022-04-13 2022-04-13 液化ガス貯蔵タンク
CN202280094347.XA CN118946499A (zh) 2022-04-13 2022-04-13 液化气贮存罐

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/017703 WO2023199428A1 (ja) 2022-04-13 2022-04-13 液化ガス貯蔵タンク

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WO2023199428A1 true WO2023199428A1 (ja) 2023-10-19

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PCT/JP2022/017703 WO2023199428A1 (ja) 2022-04-13 2022-04-13 液化ガス貯蔵タンク

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JPS58156800A (ja) * 1982-03-09 1983-09-17 Jgc Corp 二重殻低温タンク
JP2012532302A (ja) * 2010-10-22 2012-12-13 大宇造船海洋株式会社 液化天然ガスの貯蔵容器
JP2020012501A (ja) * 2018-07-17 2020-01-23 株式会社Ihi タンクのガス置換方法および装置
JP2020104885A (ja) * 2018-12-27 2020-07-09 川崎重工業株式会社 真空二重殻タンク及びそのパーライト補充方法
WO2020202578A1 (ja) * 2019-04-05 2020-10-08 川崎重工業株式会社 二重殻タンクおよび液化ガス運搬船
JP2021160619A (ja) * 2020-04-01 2021-10-11 川崎重工業株式会社 船舶

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156800A (ja) * 1982-03-09 1983-09-17 Jgc Corp 二重殻低温タンク
JP2012532302A (ja) * 2010-10-22 2012-12-13 大宇造船海洋株式会社 液化天然ガスの貯蔵容器
JP2020012501A (ja) * 2018-07-17 2020-01-23 株式会社Ihi タンクのガス置換方法および装置
JP2020104885A (ja) * 2018-12-27 2020-07-09 川崎重工業株式会社 真空二重殻タンク及びそのパーライト補充方法
WO2020202578A1 (ja) * 2019-04-05 2020-10-08 川崎重工業株式会社 二重殻タンクおよび液化ガス運搬船
JP2021160619A (ja) * 2020-04-01 2021-10-11 川崎重工業株式会社 船舶

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