CN114458944B - Land-based storage tank for storing liquid hydrogen and liquid helium - Google Patents

Land-based storage tank for storing liquid hydrogen and liquid helium Download PDF

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Publication number
CN114458944B
CN114458944B CN202210167174.1A CN202210167174A CN114458944B CN 114458944 B CN114458944 B CN 114458944B CN 202210167174 A CN202210167174 A CN 202210167174A CN 114458944 B CN114458944 B CN 114458944B
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plate
cold
tank
concrete
shielding film
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CN114458944A (en
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冯宪高
何炜
陈世福
魏颖
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Zhongtai Suzhou Hydrogen Energy Technology Co ltd
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Zhongtai Suzhou Hydrogen Energy Technology Co ltd
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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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • 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
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • F17C3/085—Cryostats
    • 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
    • F17C2203/0308—Radiation shield
    • 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
    • F17C2203/0325—Aerogel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0329—Foam
    • F17C2203/0333—Polyurethane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—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
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0345—Fibres
    • F17C2203/035—Glass wool
    • 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
    • F17C2203/0607—Coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0639—Steels
    • F17C2203/0643—Stainless steels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0678—Concrete
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • 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

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

Abstract

The invention provides a land storage tank for storing liquid hydrogen and liquid helium, which comprises a concrete outer tank, a moisture-proof layer, low-temperature resin cement, a first support plate, a first insulating cold insulation plate, a first metal shielding film, a second insulating cold insulation plate, a second support plate, a second metal shielding film, a tank body cold screen layer, an interlayer space, a third insulating cold insulation plate, a metal plate, a suspended ceiling main body, a suspended ceiling lower layer insulation, a suspended ceiling cold screen layer, a suspended ceiling upper layer insulation, a steel tank top, a concrete tank top, a suspender and a concrete bottom plate, wherein the concrete outer tank, the concrete tank top and the concrete bottom plate are respectively of a prestressed reinforced concrete structure. The invention can store more low-temperature liquefied gas, adopts cold screen solid heat conduction combination, improves heat insulation efficiency by utilizing the evaporation of the cold screen, further reduces evaporation rate, improves storage time of liquid hydrogen and liquid helium in the storage tank, reduces natural evaporation rate, and has convenient construction and strong practicability.

Description

Land-based storage tank for storing liquid hydrogen and liquid helium
Technical Field
The invention belongs to the technical field of low-temperature frozen liquid storage, and particularly relates to a land storage tank for storing liquid hydrogen and liquid helium.
Background
Hydrogen is used as an emerging energy source, has the advantages of high efficiency, cleanness, no pollution, sustainability and the like, and is one of the most promising clean energy sources at present along with the rapid development of economy and the continuous improvement of environmental management requirements in China.
Liquid helium is a liquefied body of helium. Colorless, transparent, odorless and tasteless. The critical temperature (5.20K) and boiling point (4.125K) were the lowest. It can obtain the ultra-low temperature of mK grade, and is a main low-temperature source. Has the properties of: if the solid is never solidified under normal pressure, no triple point exists, and the solid phase only appears after the pressure exceeds 2.5 MPa; the phase transition phenomenon exists, and the specific heat, the density and the like at the entry point (2.1 72K) have mutation; there are superfluity, creeping film phenomenon and super heat conductivity, and the viscosity coefficient is close to zero.
The liquid hydrogen and liquid helium storage tanks are provided with compressed gas storage tanks or liquefied gas storage tanks and the like, the liquid hydrogen and liquid helium storage tanks can be divided into two types of fixed-volume storage tanks and movable-volume storage tanks according to the volume change of the container, and the large-sized fixed-volume liquid hydrogen and liquid helium storage tanks are made into spheres, and the small-sized liquid hydrogen and liquid helium storage tanks are made into cylinders. The liquefied gas storage tank has strict quality identification on the material quality, the appearance size, the weld quality, the operation quality, the installation quality, the internal device and the safety accessories of the pressed element.
Conventional physicochemical inspection of can materials is as follows: mechanical properties and chemical composition. The welding joints, welding seams, tank body sealing heads, mutual geometric positions of all the pressed elements and the like are strictly subjected to X-ray nondestructive inspection and magnetic powder inspection. The detection test of the tightness, pressure resistance and various technical indexes which can influence the safe operation of the product is carried out.
In addition, chinese patent publication No. CN113574310a, entitled tank for storing liquefied gas, comprising a sealed housing defining a storage space for liquefied gas, the housing comprising a lower end and an upper end, the tank comprising means for measuring the liquid level in the housing, the means for measuring the liquid level comprising a float arranged in the housing and a guide for moving the float. However, the existing storage tanks for storing liquid hydrogen and liquid helium also have the problems of lower insulation and cold insulation performance, inconvenient production and installation and longer construction period.
In view of this, it is highly desirable to invent a land-based storage tank for liquid hydrogen and helium.
Disclosure of Invention
In order to solve the technical problems, the invention provides a land-based storage tank for storing liquid hydrogen and liquid helium, which is used for solving the problems of lower insulation and cold insulation performance, inconvenient production and installation and longer construction period of the existing storage tank for storing liquid hydrogen and liquid helium.
The land storage tank comprises a concrete outer tank, a moisture-proof layer, low-temperature resin cement, a first support plate, a first insulating cold-insulation plate, a first metal shielding film, a second insulating cold-insulation plate, a second support plate, a second metal shielding film, a tank body cold-insulation layer, an interlayer space, a third insulating cold-insulation plate, a metal plate, a suspended ceiling main body, a suspended ceiling lower layer insulator, a suspended ceiling cold-insulation layer, a suspended ceiling upper layer insulator, a steel tank top, a concrete tank top, a suspender and a concrete bottom plate, wherein the concrete outer tank, the concrete tank top and the concrete bottom plate are respectively of a prestressed reinforced concrete structure; the inner walls of the concrete outer tank and the concrete bottom plate are coated with a moisture-proof layer; the low-temperature resin cement is used for adhering and fixing the first supporting plate on the concrete outer tank; the first insulating cold-keeping plate is in a prefabricated standard block form and is fixed on the first supporting plate through resin glue; the first metal shielding film is adhered and fixed on the first insulating and cold-preserving plate through resin glue, the second insulating and cold-preserving plate is in a prefabricated standard block form, the first metal shielding film is adhered and fixed through the resin glue, a gap between two adjacent insulating and cold-preserving plates can be filled with flexible insulation or rigid insulation, the second supporting plate is adhered and fixed on the second insulating and cold-preserving plate through the resin glue, the second supporting plate is in consideration of reserving a gap of 0.5mm-2mm in a certain range, and the second metal shielding film is adhered on the second supporting plate through the resin glue or is connected and fixed on the second supporting plate in a manner of embedding an anchor and a clamping tongue in the second supporting plate in advance;
the tank cold screen layer is a complete cold screen layer formed by splicing a plurality of prefabricated standard cold screen walls or cold screen groups, low-temperature frozen liquid or stored low-temperature gas obtained by gasifying liquid hydrogen and liquid helium can be filled and flowed in the tank cold screen layer, the tank cold screen layer is fixedly arranged on the second metal shielding film and the second supporting plate in a mechanical mode, the interlayer space is an interlayer space formed by the second metal shielding film and the third insulating cold insulation plate, the tank cold screen layer is positioned in the interlayer space, perlite cold insulation materials can be filled in the residual space except the cold screen layer in the interlayer, and inert gas can also be filled in the interlayer space;
the third insulating cold-keeping plate is stuck and fixed on the metal plate through resin glue; the metal plates are mutually assembled and welded to form a complete and airtight main container, and the main container is used for storing liquid hydrogen and liquid helium; the suspended ceiling main body is suspended and fixed below the steel tank top and the concrete tank top through a suspension rod, an annular space enclosed by the suspended ceiling main body and the metal plate forms a liquid hydrogen storage space and a liquid helium storage space together, and the lower layer of the suspended ceiling is laid above the suspended ceiling main body in an insulating manner; the upper layer of the suspended ceiling is laid above the cold screen layer of the suspended ceiling in an insulating way; the steel tank top is fixed at the top end of the concrete outer tank wall, and the concrete tank top is paved at the top of the steel tank top.
Preferably, the moisture-proof layer is fixedly adhered to the concrete outer tank and the concrete bottom plate in a spraying mode.
Preferably, the low-temperature resin mortar is used for adhering and fixing the first support plate on the concrete outer tank and the concrete bottom plate, and a horizontal plane can be established for the first support plate through the soft characteristic before self curing.
Preferably, the first support plate, the first insulating cold-insulating plate, the first metal shielding film, the second insulating cold-insulating plate and the second support plate can be assembled into standard insulating cold-insulating blocks in advance, the standard insulating cold-insulating blocks are fixed on the concrete outer tank and the concrete bottom plate in a stud and resin mortar bonding mode, gaps formed by two adjacent insulating cold-insulating blocks are filled with flexible or rigid cold-insulating materials, and the first metal shielding film between the two adjacent insulating cold-insulating blocks is bonded through resin glue to form a complete airtight structure.
Preferably, the thickness of the first metal shielding film is set between 0.3mm and 1.5mm, glass fiber mesh cloth should be adhered to the two sides of the first metal shielding film in advance, and the first metal shielding film forms a closed space structure with the concrete outer tank and the concrete bottom plate in a mutually lap joint bonding mode, and inert protective gas is filled in the first metal shielding film.
Preferably, the tank cold screen layer is formed by assembling and welding a plurality of prefabricated standard cooling liquid walls or cooling gas walls, and the tank cold screen layer is made of any one plate material selected from stainless steel, 9% nickel steel, invar steel or aluminum alloy; and a monitoring instrument system is arranged in the tank cold screen layer.
Preferably, the first support plate and the second support plate adopt at least one of low-temperature-resistant plywood, glass fiber reinforced plastic plate, polytetrafluoroethylene, polyether-ether-ketone and metal sheet with the thickness range of 1mm-50 mm; the first support plate and the second support plate are respectively adhered to the first insulating cold-insulation plate and the second insulating cold-insulation plate through resin glue.
Preferably, the first insulating cold-insulating plate and the second insulating cold-insulating plate respectively adopt common polyurethane foam blocks with the thickness of 100mm-600mm, and the reinforced polyurethane foam blocks or any one of glass wool, pearly-lustre sand, aerogel, high-vacuum heat-insulating plates and insulating cold-insulating boxes filled in the box body in vacuum glass beads.
Preferably, the second metal shielding film is made of any one of stainless steel, 9% nickel steel, invar steel or aluminum alloy with the thickness of 0.5mm-2.0 mm; the second metal shielding film and the first metal shielding film form a closed space structure, and inert protective gas is filled in the closed space structure; the second metal shielding film is fixed on the second supporting plate through being connected with an anchor bar or a clamping tongue which is buried in the second supporting plate in advance.
Preferably, the second metal shielding film can also be a metal sheet with the thickness of 0.3mm-1.5 mm; and glass fiber mesh cloth is pre-adhered to two sides of the second metal shielding film, the second metal shielding film forms a closed structure in a mutually lap joint bonding mode, and the resin glue is integrally bonded on the second supporting plate.
Preferably, a tank cold shielding layer is arranged in the interlayer space, and the tank cold shielding layer is a perlite cold insulation layer; the interlayer space is in a cold insulation state or an inert gas filling state, and an instrument monitoring system is designed in the interlayer space.
Preferably, the third insulating cold-keeping plate is a polyurethane foam plate with the thickness of 100mm-800 mm; the third insulating cold-keeping plate is adhered to the metal plate through resin glue, and fiber mesh cloth is arranged on the metal plate before spraying.
Preferably, the metal plate is at least one of a stainless steel plate, a 9% nickel steel plate, an invar steel plate or an aluminum alloy plate with the thickness range of 5-50 mm; the metal plates are assembled and welded to form a main container, and the main container is used for storing liquid hydrogen and liquid helium.
Preferably, the suspended ceiling tank cold screen layer is formed by assembling and welding a plurality of prefabricated standard cooling liquid walls or cooling gas walls, and the suspended ceiling tank cold screen layer is made of any one of stainless steel, 9% nickel steel, invar steel or aluminum alloy plates.
Preferably, the suspended ceiling main body is made of at least one of stainless steel plates, 9% nickel steel plates, invar steel plates or aluminum alloy plates, and is suspended and fixed below the steel tank top and the concrete tank top through a suspension rod, and suspended ceiling lower insulation and suspended ceiling upper insulation are paved above the suspended ceiling main body, wherein the suspended ceiling lower insulation and the suspended ceiling upper insulation are made of at least one of glass wool, aerogel, high-vacuum insulation boards or polyurethane foam.
Preferably, as a further optimized scheme, the first insulating cold-insulation plate and the first metal shielding film can be omitted, and the first supporting plate, the second insulating cold-insulation plate, the second supporting plate and the second metal shielding film can be assembled into a standard insulating cold-insulation block in advance, wherein the thickness of the standard insulating cold-insulation block is 100mm-1200mm.
Preferably, as a further optimized scheme, a supporting plate can be added between the first insulating cold-keeping plate and the first metal shielding film, the first metal shielding film can be directly adhered or connected with an anchoring strip or a clamping tongue which is embedded in the supporting plate in advance to be fixed on the supporting plate, the thickness range is 1mm-50mm, and the supporting plate is at least one of a low-temperature-resistant plywood, a glass fiber reinforced plastic plate, polytetrafluoroethylene, polyether-ether-ketone and a metal sheet.
Preferably, as a further optimized scheme, the concrete outer tank, the concrete tank top and the concrete bottom plate can be replaced by steel plates, namely, steel outer tank, steel tank top and steel bottom plate, the concrete outer tank, the concrete tank top and the concrete bottom plate can be made of any one of carbon steel, stainless steel, 9% nickel steel, invar steel or aluminum alloy plates, the thickness of the steel plates is 10cm-100cm, and meanwhile, the moisture-proof layer can be eliminated.
Compared with the prior art, the invention has the beneficial effects that:
the land-based storage tank for storing liquid hydrogen and liquid helium is a normal pressure container with a cold screen, the pressure is generally below 0.1Mpa, and compared with a high-pressure storage tank, the land-based storage tank is safer and has higher energy density.
The land-based storage tank for storing liquid hydrogen and liquid helium can store more low-temperature liquefied gas, adopts cold screen solid heat conduction combination, improves heat insulation efficiency by utilizing evaporation of the cold screen, further reduces evaporation rate, and ensures storage time of liquefied gas in the storage tank.
The invention not only improves the storage safety of liquid hydrogen and liquid helium, adopts a double-cold-screen heat insulation mode, improves the insulation and cold-keeping performance of the traditional storage and transportation device, improves the storage time of the liquid hydrogen and the liquid helium in the storage tank, simultaneously greatly reduces the natural evaporation rate of the liquid hydrogen and the liquid helium, and related materials can be prefabricated in factories, thereby reducing the construction workload, shortening the construction period, improving the safety of equipment and realizing the concept of green environmental protection.
The invention can be applied to large-scale land vertical liquid hydrogen and liquid helium storage tanks, and the standard cold screen, the standard insulating cold insulation box and the standard metal plate are all in modularized prefabricated structures, so that the invention is applicable to hydrogen storage tanks with different sizes, reduces the cost and improves the installation efficiency; the structural independence of the storage and airtight functions is guaranteed, each layer can be stored independently, and when the main layer shielding is damaged, the secondary layer shielding can still guarantee the storage integrity of the storage tank, so that the liquid hydrogen and the liquid helium are prevented from leaking.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a standard insulating block structure;
FIG. 3 is a schematic diagram of a normal cross structure of an insulating cold block anchor bar;
FIG. 4 is a schematic diagram of a cross structure of a standard insulating and cold-insulating block anchoring strip;
FIG. 5 is a schematic diagram of a standard insulating block latch;
in the figure:
1. a concrete outer tank; 2. a moisture barrier; 3. low temperature resin cement; 4. a first support plate; 5. a first insulating cold-keeping plate; 6. a first metal shielding film; 7. a second insulating cold-keeping plate; 8. a second support plate; 9. a second metal shielding film; 10. a tank cold screen layer; 11. an interlayer space; 12. a third insulating cold-keeping plate; 13. a metal plate; 14. a suspended ceiling main body; 15. insulating the lower layer of the suspended ceiling; 16. a suspended ceiling cold screen layer; 17. the upper layer of the suspended ceiling is insulated; 18. a steel tank top; 19. a concrete tank top; 20. a boom; 21. a concrete bottom plate.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
examples:
as shown in fig. 1 to 5, the present invention provides a land storage tank for storing liquid hydrogen and helium, a concrete outer tank 1, a moisture barrier 2, a low-temperature resin cement 3, a first support plate 4, a first insulating cold insulation plate 5, a first metal shielding film 6, a second insulating cold insulation plate 7, a second support plate 8, a second metal shielding film 9, a tank body cold screen layer 10, an interlayer space 11, a third insulating cold insulation plate 12, a metal plate 13, a ceiling main body 14, a ceiling lower layer insulation 15, a ceiling cold screen layer 16, a ceiling upper layer insulation 17, a steel tank top 18, a concrete tank top 19, a suspension rod 20 and a concrete bottom plate 21, wherein the concrete outer tank 1, the concrete tank top 19 and the concrete bottom plate 21 are respectively of a prestressed reinforced concrete structure; the inner walls of the concrete outer tank 1 and the concrete bottom plate 21 are coated with a moisture-proof layer 2; the moisture-proof layer 2 is fixedly adhered to the concrete outer tank 1 and the concrete bottom plate 21 in a spraying mode;
the low-temperature resin mortar 3 is used for adhering and fixing the first supporting plate 4 on the concrete outer tank 1; meanwhile, the flatness is difficult to control in the pouring process of the concrete outer tank 1, the flatness is controlled by a resin cement leveling method, the first support plate 4, the first insulating cold-keeping plate 5, the first metal shielding film 6 and the second insulating cold-keeping plate 7, the second support plate 8 and the second metal shielding film 9 establish an actual and theoretical combined construction plane, the first insulating cold-keeping plate 5 is in a prefabricated standard block form and is fixed on the first support plate 4 through resin glue, a gap generated between two adjacent insulating cold-keeping plates can be filled with flexible insulation or rigid insulation, the first metal shielding film 6 is fixed on the first insulating cold-keeping plate 5 through resin glue, the second insulating cold-keeping plate 7 is in a prefabricated standard block form and is fixed on the first metal shielding film 6 through resin glue, a gap generated between two adjacent insulating cold-keeping plates can be filled with flexible insulation or rigid insulation, the second support plate 8 is fixed on the second insulating cold-keeping plate 7 through resin glue, and a gap of 0.5mm-2mm is reserved in a certain range;
the second metal shielding film 9 is adhered to the second supporting plate 8 through resin glue or is fixedly connected to the second supporting plate 8 through embedding an anchor and a clamping tongue in the second supporting plate 8 in advance, the tank cold shielding layer 10 is a complete cold shielding layer formed by splicing a plurality of prefabricated standard cold shielding walls or cold shielding groups, low-temperature frozen liquid or stored low-temperature gas obtained by gasifying liquid hydrogen and liquid helium can be filled and flowed in the tank cold shielding layer 10, the tank cold shielding layer 10 is fixedly arranged on the second metal shielding film 9 and the second supporting plate 8 through a mechanical mounting support, the interlayer space 11 is an interlayer space 11 formed by the second metal shielding film 9 and a third insulating cold shielding plate 12, the tank cold shielding layer 10 is positioned in the interlayer space 11, perlite cold shielding materials can be filled in the residual space outside the interlayer, inert gas can also be filled in the residual space of the tank cold shielding layer, the whole interlayer space is in a cold shielding state or an inert gas filling state, and the third insulating cold shielding plate 12 is fixedly arranged on the metal shielding plate 13 in a certain expansion area in consideration of a certain expansion and contraction area;
the metal plates 13 are mutually assembled and welded to form a complete and airtight main container, and the main container is used for storing liquid hydrogen and liquid helium; the suspended ceiling main body 14 is suspended and fixed below the steel tank top 18 and the concrete tank top 19 through the suspension rod 20, an annular space surrounded by the suspension rod 20 and the metal plate 13 forms a liquid hydrogen and liquid helium storage space together, the suspended ceiling lower insulation 15 is paved above the suspended ceiling main body 14, the suspended ceiling cold screen layer 16 is formed by splicing a plurality of prefabricated standard cold screen walls or cold screen groups to form a complete cold screen layer, low-temperature frozen liquid or stored liquid hydrogen and liquid helium gasified low-temperature gas can be filled and flowed in the suspended ceiling cold screen layer 16, the suspension rod 20 is suspended above the suspended ceiling lower insulation 15, and the suspended ceiling upper insulation 17 is paved above the suspended ceiling cold screen layer 16; the steel tank top 18 is fixed at the top end of the tank wall of the concrete outer tank 1, and the concrete tank top 19 is paved at the top of the steel tank top 18.
In the above embodiment, specifically, the low-temperature resin cement 3 adheres and fixes the first support plate 4 on the concrete outer tank 1 and the concrete bottom plate 21, and meanwhile, a horizontal plane can be established for the first support plate 4 through the soft characteristic before the first support plate is cured, and a certain load force can be born.
In the above embodiment, specifically, the first support plate 4, the first insulating cold-keeping plate 5, the first metal shielding film 6, the second insulating cold-keeping plate 7 and the second support plate 8 may be assembled into standard insulating cold-keeping blocks in advance, and fixed on the concrete outer tank 1 and the concrete bottom plate 21 by using a stud and resin cement to adhere, the gap formed by two adjacent insulating cold-keeping blocks will be filled with flexible or rigid cold-keeping material, and the first metal shielding film 6 between two adjacent insulating cold-keeping blocks is adhered by resin glue to form a complete closed structure.
In the above embodiment, specifically, the thickness of the first metal shielding film 6 is set between 0.3mm and 1.5mm, the glass fiber mesh cloth should be pre-adhered to two sides of the first metal shielding film 6, and the first metal shielding film 6 forms a closed space structure with the concrete outer tank 1 and the concrete bottom plate 21 in a mutually lap joint bonding manner, and inert protective gas is filled in the first metal shielding film.
In the above embodiment, specifically, the tank cold shielding layer 10 is formed by assembling and welding a plurality of prefabricated standard cooling liquid walls or cooling gas walls, and the tank cold shielding layer 10 is made of any one plate material of stainless steel, 9% nickel steel, invar steel or aluminum alloy; a monitoring instrument system is arranged in the tank cold screen layer 10.
In the above embodiment, specifically, the first support plate 4 and the second support plate 8 are at least one of a low temperature resistant plywood, a glass fiber reinforced plastic plate, polytetrafluoroethylene, polyether ether ketone and a metal sheet, wherein the thickness of the plywood is in a range of 1mm to 50 mm; the first support plate 4 and the second support plate 8 are respectively adhered to the first insulating cold-insulation plate 5 and the second insulating cold-insulation plate 7 through resin glue, so that the strength of the insulating cold-insulation plate material is enhanced; the first insulating cold-insulating plate 5 and the second insulating cold-insulating plate 7 are respectively made of common polyurethane foam blocks with the thickness of 100mm-600mm, and the reinforced polyurethane foam blocks or any one of insulating cold-insulating boxes filled in the box bodies from glass wool, pearly-lustre sand, aerogel, high-vacuum heat-insulating plates and vacuum glass beads; the second metal shielding film 9 is made of any one of stainless steel, 9% nickel steel, invar steel or aluminum alloy with the thickness of 0.5mm-2.0 mm; the second metal shielding film 9 and the first metal shielding film 6 form a closed space structure, and inert protective gas is filled in the closed space structure; the second metal shielding film 9 is fixed on the second supporting plate 8 through being connected with an anchor bar or a clamping tongue which is embedded in the second supporting plate 8 in advance; the second metal shielding film 9 can also be a metal thin plate with the thickness of 0.3mm-1.5 mm; the glass fiber mesh cloth is pre-adhered on the two sides of the second metal shielding film 9, the second metal shielding film 9 forms a closed structure in a mutually lap joint bonding mode, and the resin glue is integrally bonded on the second supporting plate 8; a tank cold screen layer 10 is arranged in the interlayer space 11, and the tank cold screen layer 10 is a perlite cold insulation layer; the interlayer space 11 is in a cold insulation state or an inert gas filling state, and an instrument monitoring system is designed in the interlayer space 11.
In the above embodiment, specifically, the third insulating and cold-keeping plate 12 is a polyurethane foam plate with a thickness of 100mm-800mm, and may be prefabricated into a standard block form by an on-site spraying method or a workshop, the third insulating and cold-keeping plate 12 is bonded to the metal plate 13 by resin glue, and before spraying, a fiber mesh cloth should be installed on the metal plate 13, and at the same time, a certain shrinkage gap should be reserved for expansion and shrinkage in a certain area range; the metal plate 13 is at least one of a stainless steel plate, a 9% nickel steel plate, an invar steel plate or an aluminum alloy plate with the thickness range of 5-50 mm; the metal plate 13 is assembled and welded to form a main container, and the main container is used for storing liquid hydrogen and liquid helium; the suspended ceiling tank cold screen layer 10 is formed by assembling and welding a plurality of prefabricated standard cooling liquid walls or cooling gas walls, and the suspended ceiling tank cold screen layer 10 is made of any one of stainless steel, 9% nickel steel, invar steel or aluminum alloy plates; the suspended ceiling tank cold screen layer 10 is welded into a low-temperature wall with a closed space structure, the low-temperature wall can be designed into different shapes, a monitoring instrument system is arranged in the low-temperature wall, and the low-temperature wall is suspended above the suspended ceiling lower-layer insulation 15 by a suspension rod 20; the suspended ceiling main body 14 is made of at least one of stainless steel plates, 9% nickel steel plates, invar steel plates or aluminum alloy plates, is suspended and fixed below a steel tank top 18 and a concrete tank top 19 through a suspension rod 20, a suspended ceiling lower-layer insulation 15 and a suspended ceiling upper-layer insulation 17 are paved above the suspended ceiling main body 14, and the suspended ceiling lower-layer insulation 15 and the suspended ceiling upper-layer insulation 17 are made of at least one of glass wool, aerogel, high-vacuum insulation boards or polyurethane foam.
In the above embodiment, specifically, as a further optimized solution, the first insulating and cooling plate 5 and the first metal shielding film 6 may be omitted, and the first support plate 4, the second insulating and cooling plate 7, the second support plate 8 and the second metal shielding film 9 may be pre-assembled into a standard insulating and cooling block, and the thickness thereof is 100mm-1200mm.
In the above embodiment, specifically, as a further optimized solution, a supporting plate may be added between the first insulating cold-keeping plate 5 and the first metal shielding film 6, where the first metal shielding film 6 may be directly adhered or fixed on the supporting plate by being connected with an anchor bar or a clamping tongue embedded in advance in the supporting plate, and the thickness of the supporting plate ranges from 1mm to 50mm, and the supporting plate is at least one of a low-temperature resistant plywood, a glass fiber reinforced plastic plate, polytetrafluoroethylene, polyether ether ketone and a metal sheet.
In the above embodiment, specifically, as a further optimized solution, the concrete outer tank 1, the concrete tank top 19 and the concrete bottom plate 21 may be replaced with steel plates, i.e., steel outer tank, steel tank top and steel bottom plate, and the concrete outer tank 1, concrete tank top 19 and concrete bottom plate 21 may be made of any one of carbon steel, stainless steel, 9% nickel steel, invar steel or aluminum alloy plate, the thickness of which is set at 10cm to 100cm, and the moisture barrier 2 may be eliminated.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (14)

1. The land storage tank for storing liquid hydrogen and liquid helium is characterized by comprising a concrete outer tank (1), a moisture-proof layer (2), low-temperature resin cement (3), a first support plate (4), a first insulating cold insulation plate (5), a first metal shielding film (6), a second insulating cold insulation plate (7), a second support plate (8), a second metal shielding film (9), a tank body cold screen layer (10), an interlayer space (11), a third insulating cold insulation plate (12), a metal plate (13), a suspended ceiling main body (14), a suspended ceiling lower layer insulation (15), a suspended ceiling cold screen layer (16), a suspended ceiling upper layer insulation (17), a steel tank top (18), a concrete tank top (19), a suspender (20) and a concrete bottom plate (21), wherein the concrete outer tank (1), the concrete tank top (19) and the concrete bottom plate (21) are respectively in a prestressed concrete structure; the inner walls of the concrete outer tank (1) and the concrete bottom plate (21) are coated with a moisture-proof layer (2); the low-temperature resin mortar (3) is used for adhering and fixing the first supporting plate (4) on the concrete outer tank (1); the first insulating cold insulation plate (5) is in a prefabricated standard block form and is adhered and fixed on the first support plate (4) through resin glue; the first metal shielding film (6) is adhered and fixed on the first insulating and cold-preserving plate (5) through resin glue, the second insulating and cold-preserving plate (7) is in a prefabricated standard block form, the first metal shielding film (6) is adhered and fixed through resin glue, a gap generated between two adjacent insulating and cold-preserving plates can be filled with flexible insulation or rigid insulation, the second supporting plate (8) is adhered and fixed on the second insulating and cold-preserving plate (7) through resin glue, the second supporting plate (8) is in a certain range, a gap of 0.5mm-2mm is reserved, the second metal shielding film (9) is adhered on the second supporting plate (8) through resin glue, or is connected with an embedded anchor strip or a clamping tongue in the second supporting plate (8) in advance, the tank cold-preserving layer (10) is formed by splicing a plurality of standard cold-preserving walls or cold-preserving groups to form a complete cold-preserving layer, the inside of the tank cold-preserving layer is filled with flowing low-temperature liquid or the liquid-storing layer (11) and is arranged in a mechanical interlayer (11) between the second metal shielding film (9) and the cold-preserving plate (11), the tank cold-preserving layer (10) is arranged in a mechanical interlayer (11) and a cold-preserving space (11) is formed between the second metal shielding film (11), the rest space except the cold screen layer in the interlayer is filled with perlite cold insulation material or inert gas;
the third insulating cold-keeping plate (12) is stuck and fixed on the metal plate (13) through resin glue; the metal plates (13) are mutually assembled and welded to form a complete and airtight main container, and the main container is used for storing liquid hydrogen and liquid helium; the suspended ceiling main body (14) is suspended and fixed below the steel tank top (18) and the concrete tank top (19) through a suspension rod (20), an annular space enclosed by the suspension rod and the metal plate (13) forms a liquid hydrogen storage space and a liquid helium storage space together, and the suspended ceiling lower insulation (15) is paved above the suspended ceiling main body (14); the suspended ceiling upper layer insulation (17) is paved above the suspended ceiling cold screen layer (16); the steel tank top (18) is fixed at the top end of the tank wall of the concrete outer tank (1), and the concrete tank top (19) is paved at the top of the steel tank top (18).
2. Land tank for storing liquid hydrogen and helium according to claim 1, characterised in that the moisture barrier (2) is fixedly attached to the concrete outer tank (1) and the concrete bottom plate (21) by means of spraying.
3. A land tank for storing liquid hydrogen and helium according to claim 1, characterized in that said cryogenic resin mastic (3) adheres and fixes the first support plate (4) to the concrete outer tank (1) and to the concrete floor (21) while establishing a level for the first support plate (4) by its own soft characteristics before curing.
4. A land tank for storing liquid hydrogen and helium according to claim 1, characterized in that the first support plate (4), the first insulating cold-keeping plate (5), the first metal shielding film (6), the second insulating cold-keeping plate (7) and the second support plate (8) are assembled into standard insulating cold-keeping blocks in advance, the standard insulating cold-keeping blocks are fixed on the concrete outer tank (1) and the concrete bottom plate (21) by means of stud and resin cement bonding, the gap formed by two adjacent insulating cold-keeping blocks is filled with flexible or rigid cold-keeping materials, and the first metal shielding film (6) between two adjacent insulating cold-keeping blocks is bonded through resin glue to form a complete closed structure.
5. A land tank for storing liquid hydrogen and helium according to claim 1, characterized in that the thickness of the first metal shielding film (6) is set between 0.3mm and 1.5mm, glass fiber mesh cloth should be adhered on two sides of the first metal shielding film (6) in advance, and the first metal shielding film (6) forms a closed space structure with the concrete outer tank (1) and the concrete bottom plate (21) in a mutually lap joint bonding mode, and inert protective gas is filled inside.
6. The land-based storage tank for storing liquid hydrogen and liquid helium according to claim 1, wherein said tank body cold shield layer (10) is formed by assembling and welding a plurality of prefabricated standard cooling liquid walls or cooling gas walls, and said tank body cold shield layer (10) is made of any one plate material selected from stainless steel, 9% nickel steel, invar steel or aluminum alloy; and a monitoring instrument system is arranged in the tank cold screen layer (10).
7. A land tank for storing liquid hydrogen and helium according to claim 1, wherein said first support plate (4) and second support plate (8) are at least one of low temperature resistant plywood, glass fiber reinforced plastic, polytetrafluoroethylene, polyetheretherketone and sheet metal having a thickness in the range of 1mm to 50 mm; the first supporting plate (4) and the second supporting plate (8) are respectively adhered to the first insulating cold-insulation plate (5) and the second insulating cold-insulation plate (7) through resin glue.
8. A land tank for storing liquid hydrogen and helium according to claim 1, characterized in that said second metal shielding film (9) is made of any one of stainless steel, 9% nickel steel, invar steel or aluminum alloy with a thickness set between 0.5mm and 2.0 mm; the second metal shielding film (9) and the first metal shielding film (6) form a closed space structure, and inert protective gas is filled in the closed space structure; the second metal shielding film (9) is fixed on the second supporting plate (8) through being connected with an anchor bar or a clamping tongue which is buried in the second supporting plate (8) in advance.
9. A land tank for storing liquid hydrogen and helium according to claim 1, characterized in that said second metal shielding film (9) is also made of sheet metal with a thickness of 0.3mm-1.5 mm; the glass fiber mesh cloth is pre-adhered to the two sides of the second metal shielding film (9), and the second metal shielding film (9) forms a closed structure in a mutually lap joint bonding mode and is integrally bonded on the second supporting plate (8) through resin glue.
10. Land tank for storing liquid hydrogen and helium according to claim 1, characterised in that said interlayer space (11) is internally provided with a tank cold shield (10), said interlayer space (11) being internally provided with an instrument monitoring system.
11. A land tank for storing liquid hydrogen and helium according to claim 1, characterized in that said third insulating cold-keeping plate (12) is made of polyurethane foam plate with thickness set at 100mm-800mm, which can be prefabricated into standard block form by spray-on-site or workshop, said third insulating cold-keeping plate (12) is bonded to metal plate (13) by resin glue, fiber mesh cloth is installed on metal plate (13) before spray-coating, and certain shrinkage gap is reserved for expansion and shrinkage in a certain area range.
12. The land-based storage tank for storing liquid hydrogen and helium according to claim 1, wherein the suspended ceiling main body (14) is made of at least one of stainless steel plate, 9% nickel steel plate, invar steel plate or aluminum alloy plate, and is suspended and fixed below the steel tank top (18) and the concrete tank top (19) through a suspension rod (20), a suspended ceiling lower layer insulation (15) and a suspended ceiling upper layer insulation (17) are paved above the suspended ceiling main body (14), and the suspended ceiling lower layer insulation (15) and the suspended ceiling upper layer insulation (17) are at least one of glass wool, aerogel, high vacuum insulation board or polyurethane foam.
13. A land tank for storing liquid hydrogen and helium according to claim 1, wherein a support plate is added between the first insulating cold-keeping plate (5) and the first metal shielding film (6), the first metal shielding film (6) is directly adhered or connected with an anchor bar or a clamping tongue embedded in the support plate in advance and fixed on the support plate, and the thickness of the support plate ranges from 1mm to 50mm, and the support plate is at least one of low-temperature resistant plywood, glass fiber reinforced plastic, polytetrafluoroethylene, polyether ether ketone and a metal sheet.
14. A land tank for storing liquid hydrogen and helium according to claim 1, wherein said concrete outer tank (1), concrete top (19) and concrete bottom plate (21) are replaced with steel plates, i.e. steel outer tank, steel top and steel bottom plate, said concrete outer tank (1), concrete top (19) and concrete bottom plate (21) being made of any one of carbon steel, stainless steel, 9% nickel steel, invar steel or aluminum alloy plate, and having a thickness set in the range of 10cm to 100cm.
CN202210167174.1A 2022-02-23 2022-02-23 Land-based storage tank for storing liquid hydrogen and liquid helium Active CN114458944B (en)

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CN106660617A (en) * 2014-07-04 2017-05-10 大宇造船海洋株式会社 Liquefied natural gas storage tank and insulating wall securing device for liquefied natural gas storage tank
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