JPH08295394A - Cryogenic tank for cryogenic liquefied gas - Google Patents

Cryogenic tank for cryogenic liquefied gas

Info

Publication number
JPH08295394A
JPH08295394A JP7101869A JP10186995A JPH08295394A JP H08295394 A JPH08295394 A JP H08295394A JP 7101869 A JP7101869 A JP 7101869A JP 10186995 A JP10186995 A JP 10186995A JP H08295394 A JPH08295394 A JP H08295394A
Authority
JP
Japan
Prior art keywords
liquefied gas
container
cryogenic
gas container
vacuum
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.)
Pending
Application number
JP7101869A
Other languages
Japanese (ja)
Inventor
Takashi Fujitani
堯 藤谷
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.)
IHI Corp
Original Assignee
Ishikawajima Harima Heavy Industries Co 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 Ishikawajima Harima Heavy Industries Co Ltd filed Critical Ishikawajima Harima Heavy Industries Co Ltd
Priority to JP7101869A priority Critical patent/JPH08295394A/en
Publication of JPH08295394A publication Critical patent/JPH08295394A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/022—Land-based bulk storage containers
    • 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
    • F17C2201/0109—Shape cylindrical with exteriorly curved 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
    • F17C2201/01—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
    • F17C2201/052—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
    • 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
    • F17C2203/03—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
    • F17C2203/0337—Granular
    • F17C2203/0341—Perlite
    • 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
    • F17C2203/0379—Inert
    • 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
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/018—Supporting feet
    • 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
    • F17C2205/0305—Bosses, e.g. boss collars
    • 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
    • F17C2221/011—Oxygen
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, 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
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • F17C2260/03—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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0134—Applications for fluid transport or storage placed above the ground
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

(57)【要約】 【目的】 空気等の液化による断熱性能の劣化を防止す
ることができ、これにより従来のＬＮＧ用低温タンク以
上に高い断熱性能を維持でき、極低温液化ガスを収容し
たタンクを安定して支持することができ、リークに対す
る安全性が高く、配管などを安全に貫通させることがで
きるドームを備えた、極低温液化ガス用の低温タンクを
提供する。 【構成】 上方に延びる中空形のドーム１２ａを有し極
低温液化ガス１を内部に収容する液化ガス容器１２と、
液化ガス容器の周囲を間隔を隔てて囲みその間が真空に
保持されかつほぼ水平な支持面１４ａを有する真空容器
１４と、真空容器の周囲を間隔を隔てて囲みその間に不
活性ガスが充填された不活性ガス容器１６と、からな
る。液化ガス容器の底面と真空容器の底面との間には、
液化ガス容器に上面が取り付けられ下面がほぼ水平な複
数の支持ブロック１８が挟持され、かつ真空容器の底面
には熱膨張又は熱収縮を許容し全体の移動を阻止するガ
イド２０が設けられている。 (57) [Abstract] [Purpose] It is possible to prevent deterioration of heat insulation performance due to liquefaction of air and the like, which allows maintaining higher heat insulation performance than conventional low temperature tanks for LNG, and a tank containing cryogenic liquefied gas. Provided is a low temperature tank for cryogenic liquefied gas, which is capable of stably supporting a high temperature, has a high safety against leaks, and is provided with a dome capable of safely penetrating pipes and the like. A liquefied gas container 12 having a hollow dome 12a extending upward and containing a cryogenic liquefied gas 1 therein,
The liquefied gas container was surrounded by a space, and the space between the liquefied gas container was maintained in vacuum and had a substantially horizontal support surface 14a. The vacuum container was surrounded by a space and was filled with an inert gas. And an inert gas container 16. Between the bottom of the liquefied gas container and the bottom of the vacuum container,
A plurality of support blocks 18 whose upper surface is attached to the liquefied gas container and whose lower surface is substantially horizontal are sandwiched, and a guide 20 which allows thermal expansion or contraction and prevents the entire movement is provided on the bottom surface of the vacuum container. .

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、液体水素や液体酸素等
の極低温液化ガス用の低温タンクに関する。FIELD OF THE INVENTION The present invention relates to a cryogenic tank for cryogenic liquefied gas such as liquid hydrogen and liquid oxygen.

【０００２】[0002]

【従来の技術】水素は、無公害のクリーンエネルギーと
して注目されている。しかし、これらを有効活用するた
めには、エネルギーの豊富な国でこれらを製造・貯蔵
し、これを消費国へ輸送するために極低温液化ガス用の
低温タンクやこれを備えたタンカーが必要となる。かか
る低温タンクは、液体水素（ＬＨ2 ）を極低温状態で貯
蔵輸送するため従来よりも高性能な断熱保冷機能が必要
である。2. Description of the Related Art Hydrogen has attracted attention as a clean energy without pollution. However, in order to make effective use of these, a cryogenic liquefied gas cryogenic tank and a tanker equipped with this are required to manufacture and store these in energy-rich countries and transport them to consumers. Become. Since such a low temperature tank stores and transports liquid hydrogen (LH 2 ) in an extremely low temperature state, it needs to have an adiabatic cold insulation function of higher performance than conventional.

【０００３】極低温液化ガス用の低温タンクとしては、
従来からＬＮＧ船用のタンクが広く知られている。この
低温タンクでは、沸点約−１６３℃の液化天然ガス（Ｌ
ＮＧ）を収容した容器のまわりを中空の断熱室で囲み、
この断熱室に乾燥したガス（空気、窒素等）を充填して
いる。また、従来の液体水素用の陸上タンクは、図６に
例示するように、小型（約３０００ｍ3 以下）の球形で
あり、この球形タンクを外殼から吊り下げた構造になっ
ていた。As a low temperature tank for cryogenic liquefied gas,
Conventionally, tanks for LNG vessels are widely known. In this low temperature tank, liquefied natural gas (L
Enclose a container containing NG) with a hollow heat insulation chamber,
This insulating chamber is filled with dry gas (air, nitrogen, etc.). Further, a conventional land tank for liquid hydrogen has a small (about 3000 m 3 or less) spherical shape, as illustrated in FIG. 6, and has a structure in which this spherical tank is suspended from an outer shell.

【０００４】[0004]

【発明が解決しようとする課題】しかし、液体水素の沸
点は、約−２５３℃であり、液化天然ガス（ＬＮＧ）の
約−１６３℃に較べても、更に約９０℃も低温であるた
め、従来のＬＮＧ船用のタンクのように、極低温液化ガ
ス（液体水素等）を収容した容器のまわりを中空の断熱
室で囲み、この断熱室に乾燥したガス（空気、窒素等）
を充填しても、断熱室内のガスが液化して断熱性能が劣
化するため、十分な断熱性能が得られない問題点があっ
た。However, since the boiling point of liquid hydrogen is about -253 ° C, which is about 90 ° C lower than about -163 ° C of liquefied natural gas (LNG), Like a tank for a conventional LNG ship, a container containing a cryogenic liquefied gas (liquid hydrogen, etc.) is surrounded by a hollow heat insulation chamber, and a dry gas (air, nitrogen, etc.) is enclosed in this heat insulation chamber.
Even if it is filled, the gas in the heat insulating chamber is liquefied and the heat insulating performance deteriorates, so that there is a problem that sufficient heat insulating performance cannot be obtained.

【０００５】言い換えれば、液体水素は蒸発しやすいた
めこれを極低温状態で貯蔵輸送するためには、従来のＬ
ＮＧ船よりはるかに断熱保冷性能を高める必要がある。
特に、液体水素は、極低温（−２５３℃）でありかつ比
重が非常に小さい（０．０７とＬＮＧの１／６）ため、
ＬＮＧと比べて非常に蒸発しやすく、同じ入熱では蒸発
量が必要以上に大きくなる問題がある。In other words, since liquid hydrogen easily evaporates, in order to store and transport it in a cryogenic state, the conventional L
It is necessary to improve the insulation and cold insulation performance far higher than that of NG ships.
In particular, liquid hydrogen has an extremely low temperature (-253 ° C) and has a very small specific gravity (0.07 and 1/6 of LNG),
Compared to LNG, it evaporates much more easily, and there is a problem that the amount of evaporation becomes larger than necessary with the same heat input.

【０００６】また、従来の陸上タンクをそのまま船舶用
に適用しても、大型化、大容量化が困難であり、かつ吊
下げ構造では船舶運動により振動しやすく不安定であ
り、十分な強度を確保するのが困難である問題点があっ
た。更に、特に水素は分子量が小さいため漏れやすく、
かつ爆発範囲が広いため、リークに対する安全性の確保
が難しかった。Further, even if the conventional land tank is directly applied to a ship, it is difficult to increase the size and capacity, and the suspension structure is apt to vibrate due to ship motion and is unstable, so that it has sufficient strength. There was a problem that it was difficult to secure. In addition, hydrogen has a small molecular weight, so it is easy to leak,
Moreover, since the explosion range is wide, it was difficult to secure safety against leaks.

【０００７】本発明は、かかる問題点を解決するために
創案されたものである。すなわち、本発明の目的は、
空気等のガスの液化による断熱性能の劣化を防止するこ
とができ、これにより、従来のＬＮＧ用低温タンク以上
に高い断熱性能を維持でき、極低温液化ガスを収容し
たタンクを安定して支持することができ、リークに対
する安全性が高く、配管などを安全に貫通させることが
できるドームを備えた、極低温液化ガス用の低温タンク
を提供することにある。The present invention was devised to solve such problems. That is, the object of the present invention is to
It is possible to prevent deterioration of the heat insulation performance due to liquefaction of gas such as air, which makes it possible to maintain higher heat insulation performance than the conventional low temperature tank for LNG and to stably support the tank containing the cryogenic liquefied gas. Another object of the present invention is to provide a low temperature tank for cryogenic liquefied gas, which is provided with a dome that can be leaked, has high safety against leaks, and can safely penetrate pipes and the like.

【０００８】[0008]

【課題を解決するための手段】本発明によれば、上方に
延びる中空のドームを有し極低温液化ガスを内部に収容
する液化ガス容器と、該液化ガス容器の周囲を間隔を隔
てて囲みその間が真空に保持されかつほぼ水平な支持面
を有する真空容器と、該真空容器の周囲を間隔を隔てて
囲みその間に不活性ガスが充填された不活性ガス容器
と、からなることを特徴とする極低温液化ガス用の低温
タンクが提供される。According to the present invention, a liquefied gas container having a hollow dome extending upward and containing a cryogenic liquefied gas therein, and the liquefied gas container is surrounded by a space. A vacuum container having a substantially horizontal supporting surface which is held in a vacuum between the vacuum container and an inert gas container which is surrounded by the vacuum container with an interval and is filled with an inert gas. A cryogenic tank for cryogenic liquefied gas is provided.

【０００９】本発明の好ましい実施例によれば、液化ガ
ス容器の外面が輻射熱をさえぎる断熱材で覆われてい
る。また、前記真空容器と不活性ガス容器が互いに連結
され、これにより一体の二重殻が構成される。更に、ま
た前記液化ガス容器の底面と真空容器の底面との間に
は、液化ガス容器に上面が取り付けられ下面がほぼ水平
な複数の支持ブロックが挟持され、かつ真空容器の底面
には液化ガス容器の水平方向の熱膨張又は熱収縮を許容
しかつ全体の水平方向の移動を阻止するように支持ブロ
ックを案内するガイドが設けられている。According to a preferred embodiment of the present invention, the outer surface of the liquefied gas container is covered with a heat insulating material that blocks radiant heat. Further, the vacuum container and the inert gas container are connected to each other, thereby forming an integral double shell. Further, between the bottom surface of the liquefied gas container and the bottom surface of the vacuum container, a plurality of support blocks whose upper surface is attached to the liquefied gas container and whose lower surface is substantially horizontal are sandwiched, and the bottom surface of the vacuum container is liquefied gas. Guides are provided that guide the support block to allow horizontal thermal expansion or contraction of the container and prevent overall horizontal movement.

【００１０】また、前記ドームの上端を塞ぐ外板と、外
周部がドーム内面に取り付けられ外板よりも下方に設け
られた内板と、外板と内板との間に充填された断熱材
と、外板と真空容器の上端との間に設けられ上下方向及
び水平方向に可撓性を有するベローズと、を備え、外板
は上方に延びる少なくとも１本の中空外管を有し、内板
は前記外管と同心にこれを貫通して延びかつ外管より細
い中空内管を有することが好ましい。Further, an outer plate for closing the upper end of the dome, an inner plate having an outer peripheral portion attached to the inner surface of the dome and provided below the outer plate, and a heat insulating material filled between the outer plate and the inner plate. And a bellows provided between the outer plate and the upper end of the vacuum container and having flexibility in the vertical and horizontal directions, the outer plate having at least one hollow outer tube extending upward, and The plate preferably has a hollow inner tube concentric with the outer tube and extending therethrough and thinner than the outer tube.

【００１１】[0011]

【作用】上記本発明の構成によれば、極低温液化ガスを
収容する液化ガス容器の周囲を真空容器と不活性ガス容
器が各々間隔を隔てて囲んでいるので、液化天然ガス
（ＬＮＧ）よりも低温の極低温液化ガス（液体水素等）
を収容しても、真空容器による断熱性能が低下せず、Ｌ
ＮＧ用低温タンク以上に高い断熱性能を維持することが
できる。According to the above-mentioned structure of the present invention, since the vacuum container and the inert gas container surround the periphery of the liquefied gas container for storing the cryogenic liquefied gas with a space therebetween, the liquefied natural gas (LNG) Cryogenic liquefied gas (liquid hydrogen, etc.)
, The heat insulation performance of the vacuum container does not deteriorate, and L
It is possible to maintain higher heat insulation performance than the low temperature tank for NG.

【００１２】また、真空容器は、ほぼ水平な支持面を有
しているので、これと液化ガス容器との間に下面がほぼ
水平な複数の支持ブロックを挟持することにより、この
水平面で滑らせて液化ガス容器の水平方向の熱膨張又は
熱収縮を許容することができ、かつ液化ガス容器を安定
して支持することができる。更に、真空容器のまわりを
不活性ガス容器が囲んでいるので、水素が真空容器を通
して不活性ガス容器内にリークしても、反応するおそれ
がなくリークに対する安全性を高めることができる。Further, since the vacuum container has a substantially horizontal supporting surface, a plurality of supporting blocks whose lower surfaces are substantially horizontal are sandwiched between the vacuum container and the liquefied gas container so that the vacuum container can slide on the horizontal surface. As a result, horizontal thermal expansion or thermal contraction of the liquefied gas container can be permitted, and the liquefied gas container can be stably supported. Further, since the inert gas container surrounds the vacuum container, even if hydrogen leaks into the inert gas container through the vacuum container, there is no risk of reaction and the safety against leakage can be improved.

【００１３】また、本発明の好ましい実施例のように、
液化ガス容器の外面を輻射熱をさえぎる断熱材で覆え
ば、輻射による吸熱を低減することができ、かつ真空容
器の真空度が低下した場合でも、断熱性能の急激な悪化
を防止することができる。更に、真空容器と不活性ガス
容器を互いに連結し、これにより一体の二重殻を構成す
れば、真空容器に作用する大気圧を二重殻全体で受ける
ことができ、真空容器の変形を防止することができる。Further, as in the preferred embodiment of the present invention,
By covering the outer surface of the liquefied gas container with a heat insulating material that blocks radiant heat, heat absorption due to radiation can be reduced, and even if the degree of vacuum of the vacuum container is reduced, abrupt deterioration of heat insulating performance can be prevented. Furthermore, if the vacuum container and the inert gas container are connected to each other to form an integral double shell, the atmospheric pressure acting on the vacuum container can be received by the entire double shell, preventing deformation of the vacuum container. can do.

【００１４】更に、ドームの上端を塞ぐ外板と内板との
間に断熱材を充填しドーム頂板の温度を高めて、これに
よりベローの取付けを容易にしている。また、外板と内
板を貫通して配管を設けることにより、極低温液化ガス
のリークのおそれなく、管や電気ケーブルなどを集中的
に安全にタンク内外を貫通させることができる。Further, a heat insulating material is filled between the outer plate and the inner plate that closes the upper end of the dome to raise the temperature of the dome top plate, thereby facilitating the attachment of the bellows. Further, by providing the pipe through the outer plate and the inner plate, it is possible to centrally and safely penetrate the pipe and the electric cable without fear of leaking the cryogenic liquefied gas.

【００１５】[0015]

【実施例】以下、本発明の好ましい実施例を図面を参照
して説明する。図１は、本発明による極低温液化ガス用
の低温タンクを備えたタンカーの全体図であり、（Ａ）
は平面図、（Ｂ）は側面図、（Ｃ）は縦断面図である。
この図において、船体は双胴船であり、高速運行ができ
るようになっているが、単胴船でもバージでもよく、或
いは陸上に設置してもよい。また、図２は、本発明の低
温タンクを模式的に示す図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall view of a tanker equipped with a cryogenic tank for cryogenic liquefied gas according to the present invention, (A)
Is a plan view, (B) is a side view, and (C) is a longitudinal sectional view.
In this figure, the hull is a catamaran and is capable of high speed operation, but it may be a monohull or a barge, or may be installed on land. Further, FIG. 2 is a diagram schematically showing the cryogenic tank of the present invention.

【００１６】図１及び図２に示すように、本発明の低温
タンク１０は、液化ガス容器１２、真空容器１４、及び
不活性ガス容器１６からなる。また、図２に示すよう
に、液化ガス容器１２の外面が輻射熱をさえぎる断熱材
１３で覆われている。この断熱材１３は、例えばパーラ
イト等の粉末断熱材を可撓性気密容器（例えばプラスチ
ック容器）に充填し、内部を真空にしたものがよい。か
かる断熱材１３を真空容器１４の内側に位置する液化ガ
ス容器１２の外面全体に張り付けることにより、輻射に
よる吸熱を低減することができ、かつ万一真空容器１４
の真空がくずれて外気又は不活性ガスが真空スペースに
入った場合でも、断熱性能の急激な悪化を防止し、内部
の液化ガス（例えば液化水素）の急激な蒸発を防止する
ことができる。As shown in FIGS. 1 and 2, the cryogenic tank 10 of the present invention comprises a liquefied gas container 12, a vacuum container 14, and an inert gas container 16. Further, as shown in FIG. 2, the outer surface of the liquefied gas container 12 is covered with a heat insulating material 13 that blocks radiant heat. The heat insulating material 13 is preferably a flexible airtight container (for example, a plastic container) filled with a powder heat insulating material such as pearlite, and the inside is evacuated. By sticking the heat insulating material 13 to the entire outer surface of the liquefied gas container 12 located inside the vacuum container 14, heat absorption due to radiation can be reduced, and the vacuum container 14 should be prevented.
Even when the vacuum of the column breaks and the outside air or the inert gas enters the vacuum space, it is possible to prevent the adiabatic performance from rapidly deteriorating and to prevent the rapid evaporation of the liquefied gas (for example, liquefied hydrogen) inside.

【００１７】更に図２に示すように、真空容器１４と不
活性ガス容器１６は、骨等で互いに連結され、一体の二
重殻が構成されている。この構成により、真空容器に作
用する大気圧を二重殻全体で受けることができる。ま
た、液化ガス容器１２は、上方に延びる中空のドーム１
２ａを有し、かつ極低温液化ガス１（例えば液体水素）
を内部に収容するようになっている。ドーム１２ａは、
円筒形でも角柱でもよい。液化ガス容器１２の底面１２
ｂは、図２（Ａ）（Ｂ）のようにほぼ水平な平面である
のが好ましいが、図２（Ｃ）のようにわずかに傾斜して
いてもよい。また、液化ガス容器１２の頂部は図２
（Ｂ）に示すように球形又は円筒形であってもよい。Further, as shown in FIG. 2, the vacuum container 14 and the inert gas container 16 are connected to each other by a bone or the like to form an integral double shell. With this configuration, the atmospheric pressure acting on the vacuum container can be received by the entire double shell. The liquefied gas container 12 is a hollow dome 1 extending upward.
2a, and cryogenic liquefied gas 1 (eg liquid hydrogen)
It is designed to be housed inside. The dome 12a is
It may be cylindrical or prismatic. Bottom 12 of liquefied gas container 12
It is preferable that b is a substantially horizontal plane as shown in FIGS. 2 (A) and 2 (B), but it may be slightly inclined as shown in FIG. 2 (C). The top of the liquefied gas container 12 is shown in FIG.
It may be spherical or cylindrical as shown in (B).

【００１８】真空容器１４は、液化ガス容器１２の周囲
を間隔を隔てて囲みその間が真空に保持されている。ま
た、不活性ガス容器１６は、真空容器１４の周囲を間隔
を隔てて囲みその間に窒素等の不活性ガスが充填されて
いる。すなわち、船舶の場合では、一体の二重殻の間に
は、不活性ガスが充填され、二重殻と液化ガス容器１２
との間は真空に保持されている。The vacuum container 14 surrounds the liquefied gas container 12 with a space therebetween, and a vacuum is maintained between them. Further, the inert gas container 16 surrounds the vacuum container 14 at intervals and is filled with an inert gas such as nitrogen. That is, in the case of a ship, an inert gas is filled between the double shells of one body, and the double shell and the liquefied gas container 12
A vacuum is maintained between and.

【００１９】上述した構成により、極低温液化ガス１を
収容する液化ガス容器１２の周囲を真空容器１４と不活
性ガス容器１６が各々間隔を隔てて囲んでいるので、液
化天然ガス（ＬＮＧ）よりも低温の極低温液化ガス（液
体水素等）を収容しても、断熱性能が低下せず、ＬＮＧ
用低温タンク以上に高い断熱性能を維持することができ
る。With the above-described structure, since the vacuum container 14 and the inert gas container 16 surround the liquefied gas container 12 containing the cryogenic liquefied gas 1 with a space therebetween, it is preferable to use liquefied natural gas (LNG). Even if it contains cryogenic liquefied gas (liquid hydrogen, etc.) at a low temperature, the thermal insulation performance does not deteriorate, and LNG
It is possible to maintain a higher heat insulation performance than that of a low temperature tank.

【００２０】なお、液化ガス容器１２に充填する極低温
液化ガスは、液体水素に限定されず、液体窒素や液体酸
素に使用することも勿論できる。また、真空容器１４内
を真空の代わりに液化ガス容器内の極低温液化ガス温度
で凝縮しないガス（例えば水素ガスやヘリウムガス）を
入れてもよい。更に、極低温液化ガスが液化水素であ
り、真空容器内に水素ガスを入れる場合には、液化ガス
容器１２で蒸発した水素ガスを真空容器内に供給するこ
とができることは勿論である。The cryogenic liquefied gas filled in the liquefied gas container 12 is not limited to liquid hydrogen, but can be used for liquid nitrogen or liquid oxygen. Further, instead of a vacuum inside the vacuum container 14, a gas that does not condense at the cryogenic liquefied gas temperature in the liquefied gas container (for example, hydrogen gas or helium gas) may be placed. Further, when the cryogenic liquefied gas is liquefied hydrogen and hydrogen gas is put into the vacuum container, it goes without saying that the hydrogen gas evaporated in the liquefied gas container 12 can be supplied into the vacuum container.

【００２１】図２に示すように、本発明の真空容器１４
は、ほぼ水平な支持面、すなわちほぼ水平な底面１４ａ
を有している。また、液化ガス容器１２の底面１２ｂと
真空容器１４の底面１４ａとの間には、複数の支持ブロ
ック１８が挟持されている。As shown in FIG. 2, the vacuum container 14 of the present invention.
Is a substantially horizontal support surface, that is, a substantially horizontal bottom surface 14a.
have. A plurality of support blocks 18 are sandwiched between the bottom surface 12b of the liquefied gas container 12 and the bottom surface 14a of the vacuum container 14.

【００２２】図３は、この支持ブロック１８の取付構造
を示す図であり、（Ａ）は単一の支持ブロックの部分取
付側面図、（Ｂ）は支持ブロックの配置図である。図３
（Ａ）に示すように、各支持ブロック１８の上面は、液
化ガス容器１２の底面１２ｂに取り付けられている。ま
た、支持ブロック１８の下面はほぼ水平に構成され、図
３の場合は真空容器１４の底面１４ａに取付けられた上
面が平坦な台に載っている。3A and 3B are views showing the mounting structure of the support block 18, FIG. 3A is a partial mounting side view of a single support block, and FIG. FIG.
As shown in (A), the upper surface of each support block 18 is attached to the bottom surface 12 b of the liquefied gas container 12. Further, the lower surface of the support block 18 is configured to be substantially horizontal, and in the case of FIG. 3, the upper surface attached to the bottom surface 14a of the vacuum container 14 is placed on a flat table.

【００２３】本発明の低温タンク１０は、更に、真空容
器１４の底面１４ａに、液化ガス容器１２の水平方向の
熱膨張又は熱収縮を許容しかつ全体の水平方向の移動を
阻止するように支持ブロック１８を案内するガイド２０
が設けられている。ガイド２０は、図３（Ｂ）に示すよ
うに、支持ブロック１８を一方向に水平移動を許容して
これを両側から間隔を隔てて挟持する複数対の第１ガイ
ド板２０ａと、これと直交する水平方向の移動を許容し
て同様にこれを挟持する複数対の第２ガイド板２０ｂと
からなる。The cryogenic tank 10 of the present invention is further supported on the bottom surface 14a of the vacuum container 14 so as to allow the thermal expansion or contraction of the liquefied gas container 12 in the horizontal direction and prevent the horizontal movement of the entire liquefied gas container 12. Guide 20 that guides the block 18
Is provided. As shown in FIG. 3 (B), the guide 20 includes a plurality of pairs of first guide plates 20a that allow the support block 18 to move horizontally in one direction and sandwich the support block 18 at intervals from both sides. It is composed of a plurality of pairs of second guide plates 20b which allow the horizontal movement of the second guide plates 20b and similarly sandwich the same.

【００２４】上述した構成により、複数の支持ブロック
１８で液化ガス容器１２を直接支持することができ、従
来の吊り下げ構造に比較して、液化ガス容器を安定して
支持することができ、かつ液化ガス容器１２の水平方向
の熱膨張又は熱収縮を許容しかつ全体の水平方向の移動
を阻止することができる。なお、図２（Ａ）（Ｂ）では
支持ブロック１８の上下面がほぼ水平に構成されている
が、支持ブロック１８の上面を図２（Ｃ）のように液化
ガス容器１２の下面に合わせてわずかに傾斜させ、支持
ブロック１８の下面だけをほぼ水平に構成してもよい。
この構成によっても、液化ガス容器１２の水平方向の熱
膨張又は熱収縮を許容することができる。With the structure described above, the liquefied gas container 12 can be directly supported by the plurality of support blocks 18, and the liquefied gas container can be stably supported as compared with the conventional hanging structure, and It is possible to allow the thermal expansion or contraction of the liquefied gas container 12 in the horizontal direction and prevent the entire movement in the horizontal direction. 2A and 2B, the upper and lower surfaces of the support block 18 are substantially horizontal, but the upper surface of the support block 18 is aligned with the lower surface of the liquefied gas container 12 as shown in FIG. 2C. It may be slightly inclined, and only the lower surface of the support block 18 may be substantially horizontal.
Also with this configuration, horizontal thermal expansion or thermal contraction of the liquefied gas container 12 can be permitted.

【００２５】図４は、支持ブロック１８の別の配置図で
ある。この図に示すように、液化ガス容器１２と真空容
器１４の間の４辺にそれぞれ半径方向の水平移動だけを
許容するストッパー２１を設けてもよい。また、このス
トッパー２１は、図４（Ｂ）に模式的に示すように、常
温から極低温までの温度変化による液化ガス容器１２や
真空容器１４の熱収縮を考慮して適当な隙間を設けてタ
ンクが極低温になった状態でストッパーが接し、タンク
の移動を止めるように工夫された一例を示す。FIG. 4 is another layout of the support block 18. As shown in this figure, stoppers 21 that allow only horizontal movement in the radial direction may be provided on each of the four sides between the liquefied gas container 12 and the vacuum container 14. Further, as shown schematically in FIG. 4B, the stopper 21 is provided with an appropriate gap in consideration of thermal contraction of the liquefied gas container 12 and the vacuum container 14 due to a temperature change from normal temperature to extremely low temperature. An example is devised to stop the movement of the tank by contact with the stopper when the tank becomes extremely low temperature.

【００２６】図５は、本発明による極低温液化ガス用の
低温タンクの頂部の部分断面図の一例である。ドーム１
２は、外気中に突出して設けられている。この図に示す
ように、本発明の低温タンク１０の頂部は、ドーム１２
ａの上端を塞ぐ外板２２と、外周部がドーム内面に取り
付けられ外板２２よりも下方に設けられた内板２４と、
外板２２と内板２４との間に充填された断熱材２５と、
外板２２と真空容器１４の上端１４ｂとの間に設けられ
上下方向及び水平方向に可撓性を有するベローズ２６
と、を備えている。FIG. 5 is an example of a partial cross-sectional view of the top of a cryogenic tank for cryogenic liquefied gas according to the present invention. Dome 1
2 is provided so as to project into the outside air. As shown in this figure, the cryogenic tank 10 of the present invention has a dome 12 at the top.
an outer plate 22 which closes the upper end of a, and an inner plate 24 whose outer peripheral portion is attached to the inner surface of the dome and which is provided below the outer plate 22.
A heat insulating material 25 filled between the outer plate 22 and the inner plate 24;
A bellows 26 provided between the outer plate 22 and the upper end 14b of the vacuum container 14 and having flexibility in the vertical and horizontal directions.
And

【００２７】また、外板２２はその一部に上方に延びる
少なくとも１本の中空外管２３を有し、内板２４はその
中心部に外管２３と同心にこれを貫通して延び、かつ外
管２３より細い中空の内管２７を有する。内板２４の外
周部はドーム１２ａの内面に溶接等で気密に取り付けら
れている。かかる構成により、管２３，２７が外気中に
タンク頂板を貫通するので、極低温液化ガス１が甲板下
の船艙内にリークするおそれなく安全に貫通させること
ができる。The outer plate 22 has at least one hollow outer tube 23 extending upward in a part thereof, and the inner plate 24 extends through the outer tube 23 concentrically with the outer tube 23 at the center thereof, and It has a hollow inner tube 27 that is thinner than the outer tube 23. The outer peripheral portion of the inner plate 24 is airtightly attached to the inner surface of the dome 12a by welding or the like. With this configuration, the pipes 23 and 27 penetrate the tank top plate into the outside air, so that the cryogenic liquefied gas 1 can be safely penetrated without the risk of leaking into the ship bottom below the deck.

【００２８】なお、本発明は上述した実施例に限定され
ず、例えば船舶用のタンクや洋上浮体タンク等にも、本
発明の要旨を逸脱しない範囲で種々変更できることは勿
論である。The present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made to a tank for a ship, a floating tank on the ocean, etc. without departing from the scope of the present invention.

【００２９】[0029]

【発明の効果】上述した本発明の構成によれば、極低温
液化ガスを収容する液化ガス容器の周囲を真空スペース
と不活性ガススペースが囲んでいるので、液化天然ガス
（ＬＮＧ）よりも低温の極低温液化ガス（液体水素等）
を収容しても、断熱性能が低下せず、高い断熱性能と安
全性を維持することができる。According to the above-described structure of the present invention, since the vacuum space and the inert gas space surround the periphery of the liquefied gas container that stores the cryogenic liquefied gas, the temperature is lower than that of liquefied natural gas (LNG). Cryogenic liquefied gas (such as liquid hydrogen)
Even if the housing is accommodated, the heat insulation performance does not deteriorate, and high heat insulation performance and safety can be maintained.

【００３０】また、真空容器は、ほぼ水平な支持面を有
しているので、これと液化ガス容器との間に下面がほぼ
水平な複数の支持ブロックを挟持することにより、この
水平面で滑らせて液化ガス容器の水平方向の熱膨張又は
熱収縮を許容することができ、かつ液化ガス容器を安定
して支持することができる。更に、真空容器のまわりを
不活性ガス容器が囲んでいるので、水素が真空容器を通
して不活性ガス容器内にリークしても、反応するおそれ
がなくリークに対する安全性を高めることができる。Further, since the vacuum container has a substantially horizontal supporting surface, a plurality of supporting blocks whose lower surfaces are substantially horizontal are sandwiched between the vacuum container and the liquefied gas container so that the vacuum container can slide on the horizontal surface. As a result, horizontal thermal expansion or thermal contraction of the liquefied gas container can be permitted, and the liquefied gas container can be stably supported. Further, since the inert gas container surrounds the vacuum container, even if hydrogen leaks into the inert gas container through the vacuum container, there is no risk of reaction and the safety against leakage can be improved.

【００３１】また、本発明の好ましい実施例のように、
液化ガス容器の外面を輻射熱をさえぎる断熱材で覆え
ば、輻射による吸熱を低減することができ、かつ真空容
器の真空度が低下した場合でも、断熱性能の急激な悪化
を防止することができる。更に、真空容器と不活性ガス
容器を互いに連結し、これにより一体の二重殻を構成す
れば、真空容器に作用する大気圧を二重殻全体で受ける
ことができ、真空容器の変形を防止することができる。Further, as in the preferred embodiment of the present invention,
If the outer surface of the liquefied gas container is covered with a heat insulating material that blocks radiant heat, heat absorption due to radiation can be reduced, and even if the degree of vacuum of the vacuum container is reduced, abrupt deterioration of heat insulating performance can be prevented. Furthermore, if the vacuum container and the inert gas container are connected to each other to form an integral double shell, the atmospheric pressure acting on the vacuum container can be received by the entire double shell, preventing deformation of the vacuum container. can do.

【００３２】また、ドームの上端を塞ぐ外板と内板との
間に断熱材を充填しドーム頂板の温度を高めてドームベ
ローを取付けやすくし、かつこの二重板を利用して、外
板と内板を外気中で貫通して配管を設けることにより、
配管などを極低温液化ガスが閉鎖空間にリークするおそ
れなく安全に貫通させることができる。In addition, a heat insulating material is filled between the outer plate and the inner plate that closes the upper end of the dome to raise the temperature of the dome top plate to facilitate the mounting of the dome bellows, and by utilizing this double plate, the outer plate And by providing a pipe that penetrates the inner plate in the outside air,
Pipes and the like can be safely penetrated without the risk of cryogenic liquefied gas leaking into the enclosed space.

【００３３】従って、本発明の極低温液化ガス用の低温
タンクは、空気等のガスの液化による断熱性能の劣化
を防止することができ、これにより、従来のＬＮＧ用低
温タンク以上に高い断熱性能を維持でき、極低温液化
ガスを収容したタンクを安定して支持することができ、
二重殻の外スペースに窒素等を入れることにより、リ
ークに対する安全性が高く配管などを安全に貫通させる
ことができるドームを備える、等の優れた効果を有す
る。Therefore, the cryogenic tank for cryogenic liquefied gas of the present invention can prevent the deterioration of the heat insulating performance due to the liquefaction of gas such as air, whereby the heat insulating performance is higher than the conventional low temperature tank for LNG. It is possible to maintain, and to stably support the tank containing the cryogenic liquefied gas,
By putting nitrogen or the like in the outer space of the double shell, it has an excellent effect such as having a high safety against leakage and having a dome through which a pipe or the like can be safely penetrated.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明による極低温液化ガス用の低温タンクを
備えたタンカーの全体図である。FIG. 1 is an overall view of a tanker provided with a cryogenic tank for cryogenic liquefied gas according to the present invention.

【図２】本発明の低温タンクを模式的に示す図である。FIG. 2 is a diagram schematically showing a cryogenic tank of the present invention.

【図３】支持ブロックの構成を示す図である。FIG. 3 is a diagram showing a configuration of a support block.

【図４】支持ブロックの別の配置図である。FIG. 4 is another layout view of the support block.

【図５】本発明による極低温液化ガス用の低温タンクの
頂部の部分断面図の一例である。FIG. 5 is an example of a partial cross-sectional view of the top of a cryogenic tank for cryogenic liquefied gas according to the present invention.

【図６】従来の液体水素用の陸上タンクの模式図であ
る。FIG. 6 is a schematic diagram of a conventional land tank for liquid hydrogen.

【符号の説明】 １ 極低温液化ガス（液体水素等） １０ 極低温液化ガス用の低温タンク １２ 液化ガス容器 １２ａ ドーム １２ｂ 底面 １３ 断熱材 １４ 真空容器 １４ａ 底面 １４ｂ 上端 １６ 不活性ガス容器 １８ 支持ブロック １８ａ、１８ｂ ガイド板 ２０ ガイド ２１ ストッパー ２２ 外板 ２３ 中空外管 ２４ 内板 ２５ 断熱材 ２６ ベローズ ２７ 中空内管[Explanation of Codes] 1 cryogenic liquefied gas (liquid hydrogen, etc.) 10 cryogenic liquefied gas low temperature tank 12 liquefied gas container 12a dome 12b bottom 13 heat insulating material 14 vacuum container 14a bottom 14b upper end 16 inert gas container 18 support block 18a, 18b Guide plate 20 Guide 21 Stopper 22 Outer plate 23 Hollow outer tube 24 Inner plate 25 Insulation material 26 Bellows 27 Hollow inner tube

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 上方に延びる中空のドームを有し極低温
液化ガスを内部に収容する液化ガス容器と、該液化ガス
容器の周囲を間隔を隔てて囲みその間が真空に保持され
かつほぼ水平な支持面を有する真空容器と、該真空容器
の周囲を間隔を隔てて囲みその間に不活性ガスが充填さ
れた不活性ガス容器と、からなることを特徴とする極低
温液化ガス用の低温タンク。1. A liquefied gas container having an upwardly extending hollow dome for containing a cryogenic liquefied gas therein, and a liquefied gas container which is surrounded by a space and is kept in a vacuum and is substantially horizontal. A cryogenic tank for cryogenic liquefied gas, comprising: a vacuum container having a supporting surface; and an inert gas container surrounding the vacuum container with a space therebetween and filled with an inert gas therebetween. 【請求項２】 液化ガス容器の外面が輻射熱をさえぎる
断熱材で覆われている、ことを特徴とする請求項１に記
載の極低温液化ガス用の低温タンク。2. The cryogenic tank for cryogenic liquefied gas according to claim 1, wherein an outer surface of the liquefied gas container is covered with a heat insulating material that blocks radiant heat. 【請求項３】 前記真空容器と不活性ガス容器が互いに
連結され、これにより一体の二重殻が構成される、こと
を特徴とする請求項１に記載の極低温液化ガス用の低温
タンク。3. The cryogenic tank for cryogenic liquefied gas according to claim 1, wherein the vacuum container and the inert gas container are connected to each other to form an integral double shell. 【請求項４】 前記液化ガス容器の底面と真空容器の底
面との間には、液化ガス容器に上面が取り付けられ下面
がほぼ水平な複数の支持ブロックが挟持され、かつ真空
容器の底面には液化ガス容器の水平方向の熱膨張又は熱
収縮を許容しかつ全体の水平方向の移動を阻止するよう
に支持ブロックを案内するガイドが設けられている、こ
とを特徴とする請求項１に記載の極低温液化ガス用の低
温タンク。4. A plurality of support blocks whose upper surface is attached to the liquefied gas container and whose lower surface is substantially horizontal are sandwiched between the bottom surface of the liquefied gas container and the bottom surface of the vacuum container, and the bottom surface of the vacuum container is A guide is provided for guiding the support block to allow horizontal thermal expansion or contraction of the liquefied gas container and prevent overall horizontal movement of the liquefied gas container. Cryogenic tank for cryogenic liquefied gas. 【請求項５】 前記ドームの上端を塞ぐ外板と、外周部
がドーム内面に取り付けられ外板よりも下方に設けられ
た内板と、外板と内板との間に充填された断熱材と、外
板と真空容器の上端との間に設けられ上下方向及び水平
方向に可撓性を有するベローズと、を備え、 外板は上方に延びる少なくとも１本の中空外管を有し、
内板は前記外管と同心にこれを貫通して延びかつ外管よ
り細い中空内管を有する、ことを特徴とする請求項１に
記載の極低温液化ガス用の低温タンク。5. An outer plate for closing an upper end of the dome, an inner plate having an outer peripheral portion attached to an inner surface of the dome and provided below the outer plate, and a heat insulating material filled between the outer plate and the inner plate. And a bellows provided between the outer plate and the upper end of the vacuum container and having flexibility in the vertical direction and the horizontal direction, the outer plate having at least one hollow outer tube extending upward,
The cryogenic tank for cryogenic liquefied gas according to claim 1, wherein the inner plate has a hollow inner tube concentric with the outer tube and extending through the outer tube and thinner than the outer tube.
JP7101869A 1995-04-26 1995-04-26 Cryogenic tank for cryogenic liquefied gas Pending JPH08295394A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7101869A JPH08295394A (en) 1995-04-26 1995-04-26 Cryogenic tank for cryogenic liquefied gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7101869A JPH08295394A (en) 1995-04-26 1995-04-26 Cryogenic tank for cryogenic liquefied gas

Publications (1)

Publication Number Publication Date
JPH08295394A true JPH08295394A (en) 1996-11-12

Family

ID=14311998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7101869A Pending JPH08295394A (en) 1995-04-26 1995-04-26 Cryogenic tank for cryogenic liquefied gas

Country Status (1)

Country Link
JP (1) JPH08295394A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009127632A (en) * 2007-11-19 2009-06-11 Mitsubishi Heavy Ind Ltd Liquefied gas storage device
JP2011000901A (en) * 2009-06-16 2011-01-06 Ihi Marine United Inc Dome structure for liquefied gas tank
WO2012176757A1 (en) * 2011-06-24 2012-12-27 株式会社アイ・エイチ・アイ マリンユナイテッド Liquefied gas tank
JP2013039866A (en) * 2011-08-12 2013-02-28 Ihi Marine United Inc Tank support structure and floating construction
KR101239901B1 (en) * 2010-11-26 2013-03-05 삼성중공업 주식회사 Separating-type gas dome and cargo tank including the same
KR101290793B1 (en) * 2011-06-08 2013-07-30 삼성중공업 주식회사 Liquefied gas storage tank and Ship including the same
KR101359981B1 (en) * 2011-12-26 2014-02-11 대우조선해양 주식회사 Storing container for liquefied natural gas
KR101378795B1 (en) * 2011-12-26 2014-04-02 대우조선해양 주식회사 Storing container for liquefied natural gas
KR101419824B1 (en) * 2012-12-31 2014-07-15 대우조선해양 주식회사 Container for storing liquefied natural gas
JP2015004382A (en) * 2013-06-19 2015-01-08 川崎重工業株式会社 Double shell tank and liquefied gas carrying vessel
KR20160066663A (en) * 2014-12-02 2016-06-13 주식회사 포스코 Storage tank combinational structure and manufacturing method
KR20160098550A (en) * 2015-02-09 2016-08-19 현대중공업 주식회사 Tank and container ship with the same
US9664317B2 (en) 2010-09-10 2017-05-30 Wartsila Finland Oy Arrangement for connecting a pipe to a LNG tank
WO2017138044A1 (en) * 2016-02-12 2017-08-17 川崎重工業株式会社 Double-shell tank for ship
CN108431485A (en) * 2015-12-22 2018-08-21 国际壳牌研究有限公司 Vessel containment systems for liquefied gases
WO2019168195A1 (en) * 2018-03-02 2019-09-06 川崎重工業株式会社 Ship
CN113194642A (en) * 2021-04-23 2021-07-30 中国成达工程有限公司 Secondary protection box and secondary protection method for electrical equipment
CN114008376A (en) * 2019-05-16 2022-02-01 气体运输技术公司 Tank for transporting and/or storing liquid gas
WO2023140399A1 (en) * 2022-01-20 2023-07-27 현대중공업 주식회사 Bunkering vessel
JP2023541001A (en) * 2020-09-04 2023-09-27 ラティス インターナショナル エーエス Insulated tanks with integrated or operably connected support systems

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009127632A (en) * 2007-11-19 2009-06-11 Mitsubishi Heavy Ind Ltd Liquefied gas storage device
JP2011000901A (en) * 2009-06-16 2011-01-06 Ihi Marine United Inc Dome structure for liquefied gas tank
US9664317B2 (en) 2010-09-10 2017-05-30 Wartsila Finland Oy Arrangement for connecting a pipe to a LNG tank
KR101239901B1 (en) * 2010-11-26 2013-03-05 삼성중공업 주식회사 Separating-type gas dome and cargo tank including the same
KR101290793B1 (en) * 2011-06-08 2013-07-30 삼성중공업 주식회사 Liquefied gas storage tank and Ship including the same
US9181013B2 (en) 2011-06-24 2015-11-10 Japan Marine United Corporation Liquefied gas tank
WO2012176757A1 (en) * 2011-06-24 2012-12-27 株式会社アイ・エイチ・アイ マリンユナイテッド Liquefied gas tank
JP2013039866A (en) * 2011-08-12 2013-02-28 Ihi Marine United Inc Tank support structure and floating construction
KR101378795B1 (en) * 2011-12-26 2014-04-02 대우조선해양 주식회사 Storing container for liquefied natural gas
KR101359981B1 (en) * 2011-12-26 2014-02-11 대우조선해양 주식회사 Storing container for liquefied natural gas
KR101419824B1 (en) * 2012-12-31 2014-07-15 대우조선해양 주식회사 Container for storing liquefied natural gas
US10207775B2 (en) 2013-06-19 2019-02-19 Kawasaki Jukogyo Kabushiki Kaisha Double-shell tank and liquefied gas carrier ship
EP3012509A4 (en) * 2013-06-19 2017-02-15 Kawasaki Jukogyo Kabushiki Kaisha Double-shelled tank and liquefied gas transport vessel
JP2015004382A (en) * 2013-06-19 2015-01-08 川崎重工業株式会社 Double shell tank and liquefied gas carrying vessel
KR20160066663A (en) * 2014-12-02 2016-06-13 주식회사 포스코 Storage tank combinational structure and manufacturing method
KR20160098550A (en) * 2015-02-09 2016-08-19 현대중공업 주식회사 Tank and container ship with the same
CN108431485B (en) * 2015-12-22 2020-08-04 国际壳牌研究有限公司 Ship accommodation system for liquefied gas
CN108431485A (en) * 2015-12-22 2018-08-21 国际壳牌研究有限公司 Vessel containment systems for liquefied gases
JPWO2017138044A1 (en) * 2016-02-12 2018-11-01 川崎重工業株式会社 Marine double shell tank
WO2017138044A1 (en) * 2016-02-12 2017-08-17 川崎重工業株式会社 Double-shell tank for ship
WO2019168195A1 (en) * 2018-03-02 2019-09-06 川崎重工業株式会社 Ship
JP2019151191A (en) * 2018-03-02 2019-09-12 川崎重工業株式会社 Vessel
CN114008376A (en) * 2019-05-16 2022-02-01 气体运输技术公司 Tank for transporting and/or storing liquid gas
CN114008376B (en) * 2019-05-16 2023-08-08 气体运输技术公司 Tank for transporting and/or storing liquid gas
JP2023541001A (en) * 2020-09-04 2023-09-27 ラティス インターナショナル エーエス Insulated tanks with integrated or operably connected support systems
CN113194642A (en) * 2021-04-23 2021-07-30 中国成达工程有限公司 Secondary protection box and secondary protection method for electrical equipment
CN113194642B (en) * 2021-04-23 2024-05-14 中国成达工程有限公司 Secondary protection box and secondary protection method for electrical equipment
WO2023140399A1 (en) * 2022-01-20 2023-07-27 현대중공업 주식회사 Bunkering vessel

Similar Documents

Publication Publication Date Title
JPH08295394A (en) Cryogenic tank for cryogenic liquefied gas
US3039418A (en) Tankers
KR102700036B1 (en) Liquefied gas storage tank and vessel comprising the same
JP3401727B2 (en) Liquid gas storage device and its carrier
EP3904196B1 (en) Ship
US4184609A (en) Cryogenic container compound suspension strap
WO2021096541A1 (en) Method and system for containing a small atomic structure gas
US3347402A (en) Cryogenic tank
JP2021514327A (en) System for storing and transporting cold fluids on ships
US3903824A (en) Liquefied gas ship tank insulation system
US3851611A (en) Tank of a low temperature liquefied gas tanker ship
US3675809A (en) Capillary insulation
KR20220099036A (en) Storage tank for vessel
US3415408A (en) Insulated tank
KR20140004166U (en) Collecting Device Of Leak For Independent Type Cargo Tank
KR102951210B1 (en) liquefied gas storage tank and ship having the same
US3155266A (en) Container with a flexible inner tank
KR20230024370A (en) double angle tank
CN119309133B (en) A double vacuum layer horizontal liquid helium storage tank
KR20240103875A (en) liquefied gas storage tank and ship containing the same
JP7538654B2 (en) Liquefied Gas Carrier
KR20040073362A (en) Submarine
KR20220137188A (en) Insulation structure of cargo tank for ship
JPH07232695A (en) Liquid hydrogen tanker
US20250075859A1 (en) Non-vacuum cargo containment systems

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040609

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040713

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040910

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050325

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050516

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20060301