CN112413392A - Liquid hydrogen cold insulation storage device and storage method - Google Patents

Liquid hydrogen cold insulation storage device and storage method Download PDF

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Publication number
CN112413392A
CN112413392A CN202011290874.7A CN202011290874A CN112413392A CN 112413392 A CN112413392 A CN 112413392A CN 202011290874 A CN202011290874 A CN 202011290874A CN 112413392 A CN112413392 A CN 112413392A
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liquid hydrogen
liquid
gas
layer
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CN112413392B (en
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张昀
肖刚
黎卯
袁波
苏开科
郑乐辉
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Youjiete Clean Energy Co ltd
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Chengdu Dexinda Energy Technology Center LP
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal 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
    • 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
    • F17C2201/0114—Shape cylindrical with interiorly 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
    • 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
    • F17C2203/0614—Single wall
    • F17C2203/0624—Single wall with four or more layers
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/45—Hydrogen technologies in production processes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

本发明公开了一种液氢保冷储存装置及存储方法，包括若干密闭容器，所述密闭容器由内到外依次嵌套形成多层容器，所述相邻密闭容器之间形成间隙，所述若干密闭容器的夹层之间填充有变相介质，所述变相介质的真空凝固点低于氢气在常压下的沸点所述若干密闭容器之间设置有支撑，若干密闭容器之间通过支撑进行固定。所述最外层的密闭容器外设置有高真空缠绕保温层，所述高真空缠绕保温层外套设有外壳保护层。本装置采用双层保温结构方式储存液氢，其中外夹层采用高真空缠绕绝热保温，内夹层采用低压高纯洁净氮气预冷结冰成绝对真空绝热。本装置可以用于液氢的保存，便于氢气的使用和运输。

Figure 202011290874

The present invention discloses a liquid hydrogen cold storage device and storage method, including a plurality of sealed containers, wherein the sealed containers are nested in sequence from the inside to the outside to form a multi-layer container, gaps are formed between the adjacent sealed containers, and the interlayers of the plurality of sealed containers are filled with a phase-changing medium, the vacuum freezing point of the phase-changing medium is lower than the boiling point of hydrogen at normal pressure, supports are arranged between the plurality of sealed containers, and the plurality of sealed containers are fixed by the supports. A high vacuum winding insulation layer is arranged outside the outermost sealed container, and an outer shell protective layer is arranged outside the high vacuum winding insulation layer. The device adopts a double-layer insulation structure to store liquid hydrogen, wherein the outer interlayer adopts high vacuum winding insulation and the inner interlayer adopts low-pressure high-purity clean nitrogen to pre-cool and freeze into absolute vacuum insulation. The device can be used for the storage of liquid hydrogen, and is convenient for the use and transportation of hydrogen.

Figure 202011290874

Description

Liquid hydrogen cold insulation storage device and storage method
Technical Field
The invention relates to the field of hydrogen storage, in particular to a liquid hydrogen cold insulation storage device and a storage method.
Background
Hydrogen, chemical formula H2, molecular weight 2.01588, is extremely flammable at normal temperature and pressure. Colorless and transparent, odorless and tasteless, and insoluble in water. Hydrogen is the least dense gas known in the world, and its density is only 1/14 for air, i.e., 0.089g/L at 1 atm and 0 ℃. Therefore, the hydrogen can be used as filling gas for the airship and the hydrogen balloon. Hydrogen is the substance with the smallest relative molecular mass, has strong reducibility and is often used as a reducing agent to participate in chemical reactions.
In the technical field of application of the current hydrogen filling station, hydrogen is used as a clean, efficient, safe, green and environment-friendly new energy source with high heat value and sustainability, and with the rapid development of the hydrogen industry chain, the efficient storage of hydrogen becomes one of the major bottlenecks restricting the development of the hydrogen industry at present. Therefore, liquid hydrogen storage is a mandatory way for hydrogen storage and transportation.
Disclosure of Invention
The invention aims to: in order to solve the existing problems, the liquid hydrogen cold insulation storage device and the liquid hydrogen cold insulation storage method are provided. The existing mature high vacuum winding method is used as an outer interlayer method, the double interlayers both adopt low temperature resistant materials as gas storage containers, and high-purity nitrogen (inert gas) with the pressure of not more than 0.2MPa is filled into the interlayers for phase change heat insulation. The pressure vessels and pipelines with different volumes can be adjusted, and the application and production are relatively convenient, safe and reliable.
The technical scheme adopted by the invention is as follows:
the utility model provides a liquid hydrogen cold-insulation storage device, includes a plurality of closed container, closed container is nested in proper order from inside to outside and forms the multilayer container, form the clearance between the adjacent closed container, it has the phase change medium to fill between a plurality of closed container's the intermediate layer, the vacuum freezing point of phase change medium is less than the boiling point of hydrogen under the ordinary pressure.
Furthermore, the invention discloses a preferable structure of the liquid hydrogen cold insulation storage device, wherein supports are arranged among the plurality of closed containers, and the plurality of closed containers are fixed through the supports.
Furthermore, a high vacuum winding heat-insulating layer is arranged outside the outermost closed container, and a shell protective layer is sleeved outside the high vacuum winding heat-insulating layer.
Further, closed container includes the inner bag, the inner bag is with holding liquid hydrogen, including the heat preservation sandwich panel, the heat preservation sandwich panel cover is established outside the inner bag, form phase transition heat preservation nitrogen gas layer between inner bag and the heat preservation sandwich panel.
Furthermore, nitrogen (inert gas) is filled in the phase change heat preservation nitrogen layer, and the filling pressure is not higher than 0.2 MPa.
Furthermore, a spray pipe is arranged in the top of the inner container and connected to the outside of the whole device through an air inlet pipeline, and a filling gas phase valve is arranged on the air inlet pipeline; the top in-connection of inner bag has the gaseous phase pipe, the gaseous phase pipe extends outside the container, gaseous phase pipe mountain is provided with the gaseous phase valve.
Further, a liquid outlet pipe is connected to the bottom of the inner container, the liquid outlet pipe extends out of the container, and a liquid outlet valve is arranged on the liquid outlet pipe; the bottom of inner bag is provided with liquid phase and fills the mouth, liquid phase fills the mouth and is connected with the liquid phase pipe, the liquid phase pipe extends to outside the container, be provided with out the liquid valve on the liquid phase pipe.
Further, the phase change heat preservation nitrogen layer is connected with an interlayer filling port, and a vacuum port is formed in the phase change heat preservation nitrogen layer; the inner container is connected with a safety valve through a pipeline.
A phase-change gas is filled in an interlayer of a multilayer container, the phase-change temperature of the gas is higher than the boiling point of liquid hydrogen, after the liquid hydrogen is filled, the phase-change gas is changed into a solid under the low-temperature action of the liquid hydrogen, the pressure in the interlayer is reduced to form a vacuum environment, and the liquid hydrogen is insulated through the vacuum interlayer.
Heat is released inside the low-temperature liquid hydrogen of the hydrogen storage tank, and the interlayer solid nitrogen absorbs heat, so that further heat insulation inside the hydrogen storage tank is better guaranteed;
in summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the device adopts a double-layer heat preservation structure mode to store liquid hydrogen, wherein the outer interlayer adopts high vacuum winding heat insulation and heat preservation, and the inner interlayer adopts low-pressure high-purity clean nitrogen for precooling and icing to form absolute vacuum heat insulation; the inner interlayer adopts nitrogen as a phase change medium, because the melting point of the nitrogen is-209.86 ℃, and is closer to the boiling point of hydrogen of-253 ℃, the phase change of the nitrogen is more stable, and the heat insulation degree is higher.
2. The heat insulation of the outer interlayer of the device can adopt any heat insulation method close to a mature heat insulation and heat preservation process, and the heat insulation mode of the inner interlayer is not influenced; the hydrogen storage and transportation are realized, and the use range of the hydrogen is enlarged;
3. the device has the advantages that the device can be used for insulating containers with different volumes or pipelines in any comparison mode, is flexible and convenient, and can be changed and changed at will to meet the requirements of different customers; the process of the inner interlayer of the product is relatively simple, the double interlayers both adopt low temperature resistant materials as the gas storage container, and the interlayer is filled with high-purity nitrogen gas with the pressure not higher than 0.2MPa for phase change and heat insulation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the labels in the figure are: 1 is a housing protective layer; 2 is a high vacuum winding heat-insulating layer; 3 is a heat-insulating sandwich plate; 4, a phase change heat preservation nitrogen layer; 5 is an inner container; 6 is a support; 7 is a liquid outlet pipe; 8 is a liquid outlet valve; 9 is a spray pipe; 10 is a gas phase tube; 11 is a charge gas phase valve; 12 is a vacuum port; 13 is a sandwich filling port; 14 is a safety valve, and 15 is a liquid-phase filling port; 16 is a liquid phase filling valve; and 17 is a gas phase valve.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
as shown in the attached drawing 1, the invention discloses a preferred embodiment of a liquid hydrogen cold insulation storage device, which comprises an inner container 5, wherein the inner container 5 is used for containing liquid hydrogen and comprises a heat insulation sandwich plate 3, the heat insulation sandwich plate 3 is sleeved outside the inner container 5, and a phase change heat insulation nitrogen layer 4 is formed between the inner container 5 and the heat insulation sandwich plate 3.
And nitrogen is filled in the phase change heat preservation nitrogen layer 4, and the filling pressure is not higher than 0.2 MPa. A high vacuum winding heat-insulating layer 2 is arranged outside the heat-insulating sandwich plate 3, and a shell protective layer 1 is sleeved outside the high vacuum winding heat-insulating layer 2. A support 6 is arranged between the inner container 5 and the heat-preservation sandwich plate 3, and the inner container 5 and the heat-preservation sandwich plate 3 are fixed through the support 6.
A spray pipe 9 is arranged in the top of the inner container 5, the spray pipe 9 is connected to the outside of the whole device through an air inlet pipeline, and a filling gas phase valve 11 is arranged on the air inlet pipeline; the top of the inner container 5 is internally connected with a gas phase pipe 10, the gas phase pipe 10 extends out of the container, and the gas phase pipe 10 is provided with a gas phase valve 17. The bottom of inner bag 5 is connected with drain pipe 7, outside drain pipe 7 extended to the container, be provided with drain valve 8 on the drain pipe 7.
The bottom of inner bag 5 is provided with liquid phase and fills dress mouth 15, liquid phase fills dress mouth 15 and is connected with the liquid phase pipe, the liquid phase pipe extends to outside the container, be provided with liquid outlet valve 8 on the liquid phase pipe. The phase change heat preservation nitrogen layer 4 is connected with an interlayer filling port 13, and the phase change heat preservation nitrogen layer 4 is provided with a vacuum port 12; the inner container 5 is connected with a safety valve 14 through a pipeline.
In the specific operation process, the vacuum port 12 is connected with a vacuumizing device, the phase change heat preservation nitrogen layer 4 is vacuumized by the vacuumizing device, and nitrogen can be filled for many times during vacuumizing. Then nitrogen is introduced into the phase change heat preservation nitrogen layer 4 through the interlayer filling port 13, the pressure of the nitrogen is not more than 0.2MPa, and then low-temperature hydrogen enters the inner container 5 through the air inlet pipeline and is sprayed out through the spraying pipe 9 to pre-cool the inner container 5. And then discharged through the gas phase pipe 10.
Then, liquid hydrogen is filled through the liquid-phase filling port 15, and gas generated during the filling process is discharged through the gas-phase pipe 10. Liquid hydrogen cools the inner container 5, the temperature of nitrogen in the phase change heat preservation nitrogen layer 4 is reduced to be below the solidifying point of the nitrogen, the nitrogen is solidified, and a vacuum environment is formed in the phase change heat preservation nitrogen layer 4. The heat insulation of the inner container 5 is realized. The liquid outlet pipe 7 is used for discharging liquid-phase hydrogen, and the safety valve 14 is used for protecting the tank body.
Liquid hydrogen is stored by adopting a double-layer heat insulation structure mode, wherein the outer interlayer is wound in a high vacuum mode for heat insulation and heat preservation, and the inner interlayer is precooled and frozen into absolute vacuum heat insulation by adopting low-pressure high-purity clean nitrogen. The device has the advantages that the device can be used for insulating containers with different volumes or pipelines in any comparison mode, is flexible and convenient, and can be changed and changed at will to meet the requirements of different customers; the process of the product capable of using the inner interlayer is relatively simple, and the double interlayers both adopt low temperature resistant materials as the gas storage container.
Example 2:
on the basis of embodiment 1, the invention discloses a liquid hydrogen storage and cold insulation method, phase-change gas is filled in an interlayer of a multilayer container, the phase-change temperature of the gas is higher than the boiling point of liquid hydrogen, after the liquid hydrogen is filled, the phase-change gas is changed into solid under the low-temperature action of the liquid hydrogen, the pressure in the interlayer is reduced to form a vacuum environment, and the heat insulation of the liquid hydrogen is realized through the vacuum interlayer.
Example 3;
on the basis of example 2, the invention discloses a preferred embodiment, the container is arranged into a plurality of layers of closed containers, an interlayer is formed between each layer of closed containers, and each interlayer is filled with different phase-change gases. The phase transition temperature of the gas gradually rises from inside to outside, the inner layer is nitrogen, and then the gas is argon, carbon dioxide and the like.
When the liquid hydrogen storage tank is used, gas is gradually solidified from outside to inside to form vacuum, so that heat preservation is maximized, and heat preservation, storage and transportation of liquid hydrogen are realized through multi-layer vacuum.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1.一种液氢保冷储存装置，其特征在于：包括若干密闭容器，所述密闭容器由内到外依次嵌套形成多层容器，所述相邻密闭容器之间形成间隙，所述若干密闭容器的夹层之间填充有变相介质，所述变相介质的真空凝固点低于氢气在常压下的沸点。1. A liquid hydrogen cold storage device is characterized in that: comprising several airtight containers, the airtight containers are sequentially nested from the inside to the outside to form multi-layer containers, and a gap is formed between the adjacent airtight containers, and the several airtight containers are formed. A phase-change medium is filled between the interlayers of the container, and the vacuum freezing point of the phase-change medium is lower than the boiling point of hydrogen under normal pressure. 2.如权利要求1所述的一种液氢保冷储存装置，其特征在于：所述若干密闭容器之间设置有支撑(6)，若干密闭容器之间通过支撑(6)进行固定。2 . The liquid hydrogen cold storage device according to claim 1 , wherein a support ( 6 ) is arranged between the several airtight containers, and the several airtight containers are fixed by the support ( 6 ). 3 . 3.如权利要求2所述的一种液氢保冷储存装置，其特征在于：所述最外层的密闭容器外设置有高真空缠绕保温层(2)，所述高真空缠绕保温层(2)外套设有外壳保护层(1)。3. A liquid hydrogen cold storage device as claimed in claim 2, characterized in that: the outermost airtight container is provided with a high vacuum winding thermal insulation layer (2), and the high vacuum winding thermal insulation layer (2) ) jacket is provided with a shell protection layer (1). 4.如权利要求3所述的一种液氢保冷储存装置，其特征在于：所述密闭容器包括内胆(5)，所述内胆(5)用盛放液氢，包括保温夹层板(3)，所述保温夹层板(3)套设在内胆(5)外，所述内胆(5)与保温夹层板(3)之间形成相变保温氮气层(4)。4. A liquid hydrogen cold storage device according to claim 3, characterized in that: the airtight container comprises an inner liner (5), and the inner liner (5) is used for holding liquid hydrogen, comprising an insulating sandwich panel ( 3), the thermal insulation interlayer board (3) is sleeved outside the inner liner (5), and a phase-change thermal insulation nitrogen layer (4) is formed between the inner liner (5) and the thermal insulation sandwich board (3). 5.如权利要求4所述的一种液氢保冷储存装置，其特征在于：所述相变保温氮气层(4)中填充有氮气，填充压力不高于0.2MPa。5 . The liquid hydrogen cold storage device according to claim 4 , wherein the phase-change thermal insulation nitrogen layer ( 4 ) is filled with nitrogen, and the filling pressure is not higher than 0.2 MPa. 6 . 6.如权利要求5所述的一种液氢保冷储存装置，其特征在于：所述内胆(5)的顶部内设置有喷淋管(9)，所述喷淋管(9)通过进气管道连接至整个装置外，所述进气管道上设置有充装气相阀(11)；所述内胆(5)的顶部内连接有气相管(10)，所述气相管(10)延伸至容器外，所述气相管(10)山设置有气相阀(17)。6. A liquid hydrogen cold storage device according to claim 5, characterized in that: a spray pipe (9) is provided in the top of the inner pot (5), and the spray pipe (9) passes through the inlet The gas pipeline is connected to the outside of the whole device, and a gas-filled gas valve (11) is arranged on the gas inlet pipe; a gas-phase pipe (10) is connected to the top of the inner bladder (5), and the gas-phase pipe (10) extends Outside the container, the gas phase pipe (10) is provided with a gas phase valve (17). 7.如权利要求6所述的一种液氢保冷储存装置，其特征在于：所述内胆(5)的底部连接有出液管(7)，所述出液管(7)延伸至容器外，所述出液管(7)上设置有出液阀(8)；所述内胆(5)的底部设置有液相充装口(15)，所述液相充装口(15)连接有液相管，所述液相管延伸至容器外，所述液相管上设置有出液阀(8)。7. A liquid hydrogen cold storage device according to claim 6, characterized in that: the bottom of the inner bladder (5) is connected with a liquid outlet pipe (7), and the liquid outlet pipe (7) extends to the container In addition, the liquid outlet pipe (7) is provided with a liquid outlet valve (8); the bottom of the inner bladder (5) is provided with a liquid phase filling port (15), and the liquid phase filling port (15) A liquid phase pipe is connected, the liquid phase pipe extends out of the container, and a liquid outlet valve (8) is arranged on the liquid phase pipe. 8.如权利要求5所述的一种液氢保冷储存装置，其特征在于：所述相变保温氮气层(4)连接有夹层充装口(13)，所述相变保温氮气层(4)设置有真空口(12)；所述内胆(5)通过管道连接有安全阀(14)。8. A liquid hydrogen cold storage device according to claim 5, characterized in that: the phase-change heat-insulating nitrogen layer (4) is connected with an interlayer filling port (13), and the phase-change heat-preserving nitrogen layer (4) is connected with an interlayer filling port (13). ) is provided with a vacuum port (12); the inner tank (5) is connected with a safety valve (14) through a pipeline. 9.一种基于权利要求1-9中任一项所述的液氢储存保冷方法，其特征在于：在多层容器的夹层中填充相变气体，气体的相变温度高于液氢的沸点，在填充液氢后，在液氢的低温作用下，相变气体变为固体，夹层中压强降低形成真空环境，通过真空的夹层对液氢实现保温。9. A liquid hydrogen storage cold preservation method based on any one of claims 1-9, characterized in that: a phase-change gas is filled in the interlayer of the multi-layer container, and the phase-change temperature of the gas is higher than the boiling point of the liquid hydrogen , After filling with liquid hydrogen, under the action of low temperature of liquid hydrogen, the phase-change gas becomes solid, and the pressure in the interlayer is reduced to form a vacuum environment, and the liquid hydrogen is kept warm by the vacuum interlayer.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113090947A (en) * 2021-04-02 2021-07-09 氢储(上海)能源科技有限公司 System for preventing solid hydrogen storage container from being in vacuum state
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