CN112303475A - A bimetal low temperature film land storage tank for liquefied natural gas stores - Google Patents

A bimetal low temperature film land storage tank for liquefied natural gas stores Download PDF

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Publication number
CN112303475A
CN112303475A CN202011230963.2A CN202011230963A CN112303475A CN 112303475 A CN112303475 A CN 112303475A CN 202011230963 A CN202011230963 A CN 202011230963A CN 112303475 A CN112303475 A CN 112303475A
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China
Prior art keywords
plate
tank
insulating
shielding film
natural gas
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Pending
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CN202011230963.2A
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Chinese (zh)
Inventor
魏颖
陈世福
何炜
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China Pacific Maritime Technology Shanghai Co ltd
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China Pacific Maritime Technology Shanghai Co ltd
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Priority to CN202011230963.2A priority Critical patent/CN112303475A/en
Priority to CN202210280910.4A priority patent/CN114623372A/en
Publication of CN112303475A publication Critical patent/CN112303475A/en
Pending legal-status Critical Current

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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
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/001—Thermal insulation specially adapted for cryogenic vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • 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
    • F17C13/081—Mounting arrangements for vessels for large land-based storage 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
    • F17C3/022—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
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
    • 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
    • F17C2203/0345—Fibres
    • 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
    • F17C2203/0358—Thermal insulations by solid means in form of panels
    • 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
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0631—Three or more walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0639—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
    • F17C2203/0636—Metals
    • F17C2203/0648—Alloys or compositions of metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • F17C2203/0658—Synthetics
    • F17C2203/066—Plastics
    • 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
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/232—Manufacturing of particular parts or at special locations of 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/238—Filling of insulants
    • 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

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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 discloses a bimetal low-temperature film land storage tank for storing liquefied natural gas, which comprises a concrete bottom plate, an outer concrete tank, an inner tank, a dome, an insulating suspended ceiling and a moisture-proof layer, wherein the inner tank is sequentially provided with the moisture-proof layer, an epoxy resin adhesive layer, a first supporting plate, a first insulating plate, a second supporting plate, a secondary shielding film, a third supporting plate, a second insulating plate, a fourth supporting plate and a main shielding film from outside to inside, the secondary shielding film and the main shielding film are respectively welded by a plurality of metal steel plate modules and are in a continuous arched corrugated convex structure. The invention not only improves the safety of the low-temperature film storage tank, reduces the application and time consumption of low-temperature resistant glue in the construction process, but also adopts a mature and safe film plate welding design mode and an environment-friendly mode of prefabricating the foaming insulating panel in advance, thereby reducing the construction workload, shortening the construction period, improving the safety of equipment and realizing the concept of environmental protection.

Description

A bimetal low temperature film land storage tank for liquefied natural gas stores
Technical Field
The invention relates to the technical field of Liquefied Natural Gas (LNG) low-temperature storage devices, in particular to a bimetal low-temperature film land storage tank for storing LNG.
Background
Liquefied Natural Gas (LNG) has been the first choice of energy for petroleum substitution due to its advantages of being green, environment-friendly and efficient, and has become one of the most rapidly developing energy industries in the world. With the rapid development of economy and the continuous improvement of the requirement on environmental management in China, the application and development of LNG are more and more emphasized by all parties, and particularly under the condition of frequent haze weather, the importance of LNG is more and more prominent, thereby causing the rapid increase of the demand of the society on clean energy. LNG is one of the key directions for the development of clean energy in China in the future.
The LNG receiving station mainly comprises dock unloading, LNG storage, process treatment and export, and the LNG storage tank which has the storage task has the longest construction period, the most advanced technology and the most difficult point in the engineering construction process, and is always managed as a critical path of the whole engineering. And the structural form and the scientific and technological development of the LNG storage tank are also important concerns of people in the same industry at home and abroad.
At present, the standardized prefabrication degree of a 9% nickel steel storage tank is lower, the automatic welding rate is lower, the construction difficulty in the construction of the 9% nickel steel storage tank is increased, the volume of the 9% nickel steel storage tank is limited by the construction process, the bottom of the tank is made of foam glass bricks to achieve the cold insulation effect, 4 layers need to be laid, the thickness of the tank and the thickness of the tank wall are different due to the fact that the thickness of the tank bottom is different from that of the tank wall due to the fact that a moisture-proof layer is arranged on the thickness of the tank bottom, and the construction period is. For this reason, a new technical solution needs to be designed for solution.
Disclosure of Invention
The invention aims to provide a bimetal low-temperature film land storage tank for storing liquefied natural gas, which is designed in a manner that the structure, insulation and air tightness are clearly separated, each part is optimized, accidents can be effectively avoided, the welding stress can tend to zero due to the film type design, the film material cannot have crack propagation, and the crack propagation cannot occur even under the condition of cyclic loading. The design solves the problems that the 9 percent nickel steel storage tank in the prior art is unreasonable in structural design, long in construction period and high in difficulty and potential safety hazards exist in natural gas storage.
In order to achieve the purpose, the invention provides the following technical scheme: a bimetal low-temperature film land storage tank for liquefied natural gas storage comprises a concrete bottom plate, an outer concrete tank, an inner tank, a dome, an insulating suspended ceiling and a moisture-proof layer, wherein the outer concrete tank and the inner tank are fixedly connected on the surface of the concrete bottom plate in a longitudinal mode, the inner tank is fixedly connected inside the outer tank, the insulating suspended ceiling is suspended and fixed on the lower portion of the concrete dome, the moisture-proof layer is fixed on the surface of the concrete bottom plate and the outer tank, the inner tank is sequentially provided with the moisture-proof layer, an epoxy resin adhesive layer, a first supporting plate, a first insulating plate, a second supporting plate, a secondary shielding film, a third supporting plate, a second insulating plate, a fourth supporting plate and a main shielding film from outside to inside, the first supporting plate and the first insulating plate are internally provided with a plurality of groups of adhesive studs and are fixed on the outer concrete tank through the studs and the epoxy resin layer, and a plurality of groups of filling insulating blocks are filled in the peripheries, the first insulating plate and the second insulating plate are formed by splicing a plurality of standard module insulating plates, a filling insulating block is also filled at the periphery of a gap between two adjacent insulating plates, the first insulating plate is connected with a second supporting plate, the inner side of the second supporting plate is connected with a secondary shielding film, a plurality of groups of strip-shaped steel plates are embedded at the joint, the inner side of the secondary shielding film is contacted with a third supporting plate, L-shaped corner bodies and T-shaped corner bodies are arranged at the boundary corners of the second insulating plate and the first insulating plate respectively, the L-shaped corner bodies and the T-shaped corner bodies are respectively positioned at the corners of the secondary shielding film and the main shielding film and connected with each other, the inner side and the outer side of the second insulating plate are connected with a third supporting plate and a fourth supporting plate, a plurality of groups of strip-shaped steel plates are embedded on the surface of the fourth supporting plate, the fourth supporting plate is connected with the main shielding film, and reinforcing wedges are installed inside the secondary shielding film and the, the secondary shielding film and the main shielding film are welded together in an automatic welding or manual welding mode; the concrete dome of the top fixedly connected with area low temperature carbon steel welt of outer jar, it has the strenghthened type aluminium system flat board to hang under the dome, the dome lower part is fixed to be hung stainless steel connecting rod and is connected with low temperature carbon steel welt, the dome has stainless steel compression ring with tank wall top main layer shielding film's junction welded connection, the top of inner tank is equipped with the I-beam.
As an improvement of the technical scheme, the first insulating plate and the second insulating plate are both made of reinforced polyurethane foam materials and glass fiber materials, and the density is 20-300kg/m3The thickness of the first insulating plate is 50mm-500mm, and the thickness of the second insulating plate is 50mm-500 mm. .
As the improvement of the technical scheme, the surfaces of the first supporting plate, the second supporting plate, the third supporting plate and the fourth supporting plate are coated with glue to be bonded with the first insulating plate and the second insulating plate, and the third supporting plate and the fourth supporting plate are coated with epoxy resin adhesive layers to be connected with the outer concrete tank.
As the improvement of above-mentioned technical scheme, the thickness of secondary barrier film and main barrier film is 0.5mm-3.0mm and adopts corrosion resistant plate, 9% nickel steel sheet, invar steel sheet or aluminum alloy plate to make, secondary barrier film and main barrier film shape are the protruding column structure of continuous arch ripple, strengthen the wedge and all install in secondary barrier film and main barrier film ripple department inboard, fix on second backup pad and fourth backup pad surface through the fixed mode of bonding or screw or bonding cooperation screw, the material of strengthening the wedge constitutes for wooden, metal or special materials's material.
As an improvement of the technical scheme, the dome is provided with a low-temperature carbon steel lining plate, the low-temperature carbon steel lining plate fixes the insulating ceiling on the top of the storage tank through a plurality of stainless steel connecting rods, and the insulating ceiling is composed of a reinforced aluminum plate covered by glass fibers and glass fiber felts or reinforced polyurethane foam materials.
As an improvement of the technical scheme, the main shielding layer and the secondary shielding layer are designed and divided into 20-30 fan-shaped areas at the bottom of the tank, the tank wall corresponding to the fan-shaped area at the bottom of the tank is designed into 50-60 polygons in a divided mode, the corresponding included angle is 120-150 degrees, L-shaped corner bodies and T-shaped corner bodies are designed in the 90-150 degree included angle area formed by the polygonal tank wall and the bottom of the tank, sealing plates are arranged at the end portions of the secondary shielding layer and the main shielding layer, the thickness of each of the L-shaped corner bodies, the T-shaped corner bodies and the end sealing plates is 3-20mm, and the materials are stainless steel plates, 9% nickel steel plates, invar steel plates or aluminum alloy plates.
As the improvement of the technical scheme, the top of the thin film tank wall and the 5-8 m area of the tank wall are provided with sealing steel plates, the complete airtight space height of the secondary shielding layer is 5-8 m, the airtight space height of the main shielding layer is the height of the tank wall, the thickness of each sealing steel plate is 3-20mm, and the sealing steel plates are made of stainless steel plates, 9% nickel steel plates, invar steel plates or aluminum alloy plates.
As an improvement of the technical scheme, the first insulating plate and the second insulating plate are fixed on the inner surface of the concrete outer tank and the upper surface of the concrete bottom plate through studs and anchoring threaded sleeves.
As an improvement of the technical scheme, the first insulating plate and the second insulating plate are both provided with mounting gaps, and the inside of each mounting gap is filled with an insulating block made of flexible insulating or rigid insulating or glass fiber insulating materials.
As an improvement of the technical scheme, the second insulating plate is located in the area of 5-8 meters of the tank wall and is fixed by stainless steel studs, and the studs are fixed on a strip-shaped steel plate prefabricated on the first insulating plate in an energy storage type welding mode or a manual welding mode or are prefabricated and installed on the first insulating plate.
As an improvement of the technical scheme, the strip-shaped steel plate is respectively fixed on the surfaces of the second supporting plate and the secondary shielding film and the surfaces of the fourth supporting plate and the main shielding film, the thickness of the strip-shaped steel plate is 3-15 mm, and the strip-shaped steel plate is made of a stainless steel plate, a 9% nickel steel plate, an invar steel plate or an aluminum alloy plate.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with a 9% nickel storage tank, the thin film type storage tank has the advantages that the standardized prefabrication degree is higher, the automatic welding rate is over 90%, the prefabrication rate of modules is very high, the whole-process quality control is facilitated, and the possibility of further shortening the construction period is provided.
2. The design structure of the thin film type storage tank ensures the structural independence of the storage and air-tight functions, and is convenient for carrying out hydraulic and air-tight tests, thermal angle protection and integrity detection of the inner tank of a concrete structure after construction.
3. The thin film is a container for storing liquid, and the structural design of the thin film blocks is the same, so that the volume of the thin film type storage tank is easier to be larger, the thickness of the thin film type storage tank is smaller than that of a 9% Ni storage tank under the condition that the structure of the tank bottom and the structure of the tank wall are the same, and the main shielding layer cannot crack and expand under the condition of cyclic loading, so that the leakage and expansion can be prevented, in addition, the stress at the welding position tends to zero, and the possibility of crack expansion is extremely low.
4. The hydraulic pressure test of the film type storage tank can utilize the filling seawater without adopting measures such as cathode protection and the like, and compared with a 9% nickel steel full-contained storage tank, the film type storage tank can be rapidly cooled and is easier to disassemble.
5. The insulating filling layer of the film type storage tank is always in an inert gas environment instead of natural gas or other combustible gas, which can further improve safety.
Drawings
FIG. 1 is a schematic view of a partial structure of a joint between an inner vessel and an outer vessel according to the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a structural diagram of a secondary shielding film and a primary shielding film according to the present invention;
FIG. 4 is a partial block diagram of the secondary and primary shielding films of the present invention;
FIG. 5 is a schematic cross-sectional view of a secondary and primary shielding film of the present invention;
fig. 6 is a schematic view of the T-shaped corner body according to the present invention.
In the figure: 1. concrete outer tanks; 2. an epoxy resin adhesive layer; 3. a first support plate; 4. a first insulating plate; 5. a second support plate; 6. a secondary shielding film; 7. a third support plate; 8. a second insulating plate; 9. a fourth support plate; 10. a primary shielding film; 11. storing the inner cabin; 12. a stud; 13. filling an insulating block; 14. an L-shaped corner body; 15. a strip-shaped steel plate; 16. reinforcing wedges; 17. a concrete floor; 18. a dome; 19. an insulated ceiling; 20. a moisture barrier; 21. a low temperature carbon steel liner plate; 22. a stainless steel connecting rod; 23. an aluminum flat plate; 24. a stainless steel compression ring; 25. an I-beam; 26. a T-shaped corner body; 27. end seal plates.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a bimetal low temperature film land storage tank for liquefied natural gas stores, the design theory is with structure, insulating and gas tightness effect clear and definite separation, makes every part optimize, can effectively avoid the emergence of accident to the film type design also can make welding stress tend to zero, and the crack propagation can not appear in the film material, even crack propagation can not appear under the circumstances of cyclic loading. The design solves the problems that the 9 percent Ni steel storage tank in the prior art is unreasonable in structural design, long in construction period and high in difficulty and potential safety hazards exist in natural gas storage.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a bimetal low temperature film land storage tank for liquefied natural gas stores, includes concrete bottom plate 17, concrete outer tank 1, inner tank 11, dome 18, insulating furred ceiling 19 and dampproof course 20 and constitutes its characterized in that: the concrete outer tank 1 and the inner tank 11 are vertically fixedly connected on the surface of a concrete bottom plate 17, the inner tank 11 is fixedly connected in the outer tank 1, an insulating suspended ceiling 19 is suspended and fixed on the lower part of a concrete dome 18, a moisture-proof layer 20 is fixed on the surface of the concrete bottom plate 1 and the outer tank 1, the inner tank 11 is sequentially provided with the moisture-proof layer 20, an epoxy resin adhesive layer 2, a first supporting plate 3, a first insulating plate 4, a second supporting plate 5, a secondary shielding film 6, a third supporting plate 7, a second insulating plate 8, a fourth supporting plate 9 and a main shielding film 10 from outside to inside, the first supporting plate 3 and the first insulating plate 4 are internally provided with a plurality of groups of studs 12 and are fixed on the concrete outer tank 1 through the studs 12 and the epoxy resin adhesive layer 2, a plurality of groups of filling insulating blocks 13 are plugged on the peripheries of the studs 12, the first insulating plate 4 and the second insulating plate 8 are spliced by a plurality of standard module insulating plates, the periphery of the gap between two adjacent insulating plates is also filled with a filling insulating block 13, the first insulating plate 4 is connected with a second supporting plate 5, the inner side of the second supporting plate 5 is connected with a secondary shielding film 6, a plurality of groups of strip-shaped steel plates 15 are embedded at the connection part, the inner side of the secondary shielding film 6 is contacted with a third supporting plate 7, the corners of the boundaries of the second insulating plate 8 and the first insulating plate 4 are both provided with an L-shaped corner body 14 and a T-shaped corner body 26, two groups of the L-shaped corner body 14 and the T-shaped corner body 26 are respectively used for connecting the corners of the secondary shielding film 6 and the main shielding film 10, the inner side and the outer side of the second insulating plate 8 are connected with the third supporting plate 7 and the fourth supporting plate 9, a plurality of groups of strip-shaped steel plates 15 are also embedded on the fourth supporting plate 9, the fourth supporting plate is connected with the main shielding film 10, reinforcing wedges 16 are arranged in different areas inside corrugations where the primary shielding film 6 and the main shielding film 10 are positioned, the secondary shielding film 6 and the main shielding film 10 are welded together in an automatic welding or manual welding mode; the concrete dome 18 of outer jar 1's top fixedly connected with area low temperature carbon steel welt 21 hangs down the dome and installs insulation glass fiber and glass fiber felt or reinforcing type polyurethane foaming board cover on the strenghthened type aluminium flat plate 23, stainless steel connecting rod 22 is fixed to be hung and is connected with low temperature carbon steel welt 21 in dome 18 lower part, the stainless steel compression ring 24 of dome round welds with the sealed tip closing plate 27 of jar wall top main layer barrier film 10, the tank deck design has round I-beam 25 for the used technical platform of fixed construction, hanging flower basket, crane, rail driving or scaffold tower.
As an improvement of the technical scheme, the first insulating plate 4 and the second insulating plate 8 are both made of reinforced polyurethane foam materials and glass fiber materials, and the density is 20-300kg/m3The thickness of the first insulating plate 4 is 50mm to 500mm, and the thickness of the second insulating plate 8 is 50mm to 500 mm.
As an improvement of the above technical solution, the surfaces of the first support plate 3, the second support plate 5, the third support plate 7 and the fourth support plate 9 are coated with glue to be bonded with the first insulation plate 4 and the second insulation plate 8, the third support plate 7 and the fourth support plate 9 are coated with the epoxy resin adhesive layer 2 to be connected with the concrete outer tank 1, and the epoxy resin adhesive layer 2 is formed by mixing a high molecular polymer and a curing agent; the support plate is made of wood plywood, glass fiber reinforced plastics, tetrafluoroethylene, polytetrafluoroethylene and polyether ether ketone materials, the thickness of the support plate is 2mm-30mm, the strength of the insulation plate is improved, and strip-shaped steel plates 15 are embedded in the support plate.
As the improvement of above-mentioned technical scheme, the thickness of secondary barrier film 6 and main barrier film 10 is 0.5mm-3.0mm and adopts stainless steel board, 9% nickel steel sheet, invar steel sheet or aluminum alloy plate to make, secondary barrier film 6 and main barrier film 10 shape are continuous arch ripple protruding column structure, strengthen wedge 16 and all install in secondary barrier film 6 and main barrier film 10 ripple department inboard, fix on second backup pad 5 and fourth backup pad 9 surface through the fixed mode of bonding or screw or bonding cooperation screw, strengthen wedge 16's material and constitute for wooden, metal or special material's material.
As an improvement of the above technical solution, a dome 18 of the membrane tank is designed with a low-temperature carbon steel liner plate 21, the low-temperature carbon steel liner plate 21 fixes an insulating ceiling 19 on the top of the storage tank through a plurality of stainless steel connecting rods 22, the insulating ceiling 19 is composed of a reinforced aluminum plate covered by glass fiber and glass fiber felt or reinforced polyurethane foam material, the dome 18 is designed with a circle of stainless steel compression resistant ring 24, a tank body is formed by welding with an end sealing plate 27 of the main shielding layer 10 to be airtight, and the tank top is designed with a circle of i-beam 25 for fixing a technical platform, a hanging basket, a crane, a rail crane or a scaffold tower used for construction.
As an improvement of the technical scheme, the main shielding layer 10 and the secondary shielding layer 6 are designed and divided into 20-30 fan-shaped areas at the can bottom 17, the can wall corresponding to the fan-shaped area at the can bottom is designed and divided into 50-60 polygons, the corresponding included angle is 120-150 degrees, the L-shaped corner body 14 and the T-shaped corner body 26 are designed in the 90-150 degree included angle area formed by the polygonal can wall and the can bottom, the sealing plates 27 are arranged at the end parts of the secondary shielding layer 6 and the main shielding layer 10, the thicknesses of the L-shaped corner body 14, the T-shaped corner body 26 and the end sealing plate 27 are 3-20mm, and the materials are stainless steel plates, 9% nickel steel plates, invar steel plates or aluminum alloy plates.
As the improvement of the technical scheme, the sealing steel plate 27 is designed in the area of 5-8 meters of the top of the thin film tank wall and the tank wall, the height of the complete closed space of the secondary shielding layer is 5-8 meters, the sealing space is formed by the sealing steel plate 27 of the tank wall, the height of the closed space of the main shielding layer 10 is the height of the tank wall, the closed space is formed by the sealing steel plate 27 of the top of the tank wall, the thickness of the sealing steel plate 27 is 3-20mm, and the material is stainless steel plate, 9% nickel steel plate, invar steel plate or aluminum alloy plate.
As an improvement of the technical scheme, the first insulating plate 4 and the second insulating plate 8 are fixed on the inner surface of the concrete outer tank 1 and the upper surface of the concrete bottom plate 17 through a stud 12 and an anchoring threaded sleeve, the anchoring threaded sleeve is fixed in a mode of punching and expanding embedding in advance on the wall and the bottom of the concrete tank, and the anchoring stud 12 and the anchoring threaded sleeve are fixedly designed with glue as gaskets and form final moisture-proof sealing with the moisture-proof layers on the wall and the bottom of the concrete tank.
As an improvement of the technical scheme, the first insulating plate 4 and the second insulating plate 8 are installed with installation gaps, the gaps are filled with insulating blocks 13 such as flexible insulation, rigid insulation or glass fiber insulation materials, and the like, so that the influence caused by thermal expansion and cold contraction between the adjacent insulating plates is reduced, the insulating blocks 13 such as flexible insulation, rigid insulation or glass fiber insulation materials are filled in the gaps of the fixing studs 12 for installing the first insulating plate 4, and the insulating effect is enhanced, and the heat transfer inside and outside the cargo compartment is reduced.
As an improvement of the technical scheme, the second insulating plate 8 used in the area of 5-8 meters of the tank wall is fixed by stainless steel studs 12, and the studs 12 are fixed on a strip-shaped steel plate 15 prefabricated on the first insulating plate 4 in an energy storage type welding mode or a manual welding mode or are prefabricated and installed on the first insulating plate 4.
As an improvement of the above technical scheme, the strip steel plate 15 is fixed on the surface of the second support plate 5 and the secondary shielding film 6 and adopts a lap joint intermittent welding form, the strip steel plate 15 is fixed on the surface of the fourth support plate 9 and the primary shielding film 10 and adopts a lap joint intermittent welding form, the thickness of the strip steel plate 15 is 3mm-15mm, and the material is stainless steel plate, 9% nickel steel plate, invar steel plate or aluminum alloy plate.
The thin film tank is a container for storing liquid, and the structural design of the thin film standard plates is the same, so that the volume of the thin film type storage tank is easier to be larger, the tank bottom and the tank wall have the same structure, and the thickness of the thin film type storage tank can be effectively reduced compared with that of the traditional 9% Ni storage tank, thereby facilitating construction; the main shielding layer can not generate crack propagation under the condition of cyclic loading, so that the leakage can be prevented from being enlarged, in addition, the stress at the welding position tends to be zero, and the possibility of crack propagation is extremely low; compared with a 9% Ni storage tank, the standardized prefabrication degree is higher, the automatic welding rate is more than 90%, and the module prefabrication rate is very high, so that the whole-process quality control is facilitated, and the possibility of further shortening the construction period is provided.
Example 1
Designing a scaffold of a construction platform: a whole set of modularized scaffold needs to be designed in the construction process, a corresponding working platform and a corresponding storage platform are provided, and the designed strength and safety performance stress need to meet the standard requirements.
Designing a construction platform hanging basket or a crane or a rail travelling crane: a circle of I-beam 25 is designed on the tank top of the film tank and used for fixing a hanging basket or a crane or a rail travelling crane and providing a corresponding working platform and a corresponding storage platform, and the designed strength and safety performance stress meet the standard requirements.
Example 2
Coating the epoxy resin adhesive layer 2: because the insulating board of the inner tank enclosing system is composed of a prefabricated glass fiber reinforced polyurethane foam insulating board and is paved on the concrete outer tank 1 board and fixed through the studs 12 to transmit the gravity of the cargo hold, the contact strength of the insulating panels and the outer tank is considered, and plywood with the thickness of 2mm-30mm is bonded on the contact surface of each insulating panel and the tank body, so that the requirement of the insulating panels on the flatness is met. When the insulating panel is installed, epoxy resin strips are required to be coated on the plywood which is in contact with the tank body in advance, the epoxy resin can be in full contact with the ship body in an extrusion mode during installation, and when the epoxy resin strips are coated, the allowance of 6-8 mm height is at least ensured to ensure that the contact width of the epoxy resin and the concrete outer tank reaches the minimum 10-18 mm after the insulating panel is installed, so that the gravity in the tank can be fully loaded on the tank body. Due to the compressibility of the epoxy adhesive layer 2 before hardening, the epoxy adhesive layer 2 can be sufficiently contacted with the outer tank 1 by pressing during the installation of the insulation panel. The epoxy resin coating machine is composed of a triaxial integrated coating platform and two pumps, wherein 1 pump extracts a hardener of a hardener barrel, 1 pump extracts epoxy resin of the epoxy resin barrel, the two materials enter a spiral mixing nozzle of a coating steel pipe through a hose passage and are coated on an insulating panel after being mixed in proportion, and the epoxy resin coating machine can be arranged in a tank cabin and also can be arranged in a temporary room cabin outside the tank cabin.
Example 3
The first insulating plate 4 and the second insulating plate 8 are installed in a module mode: the installation of the second insulating plate 8 module is roughly divided into: central module insulation board installation, 90 ° and 175 ° corner module insulation board installation, L-shaped corner body 14 insulation board installation, T-shaped corner body 26 insulation board installation, sector area module insulation board installation, and planar area module insulation board installation. Before the installation of the insulation board and the construction of the inner tank moisture barrier 20, the flatness inspection and the local flatness inspection must be performed on the inner wall of the concrete tank 11, and the unqualified part needs to be repaired. The inspection method can use a laser level to measure the tank bottom plane and a three meter long ruler to inspect local flatness. After the moisture-proof layer is coated and dried and the thickness measurement is qualified, the inner surface of the tank needs to be cleaned and dedusted well, and grease, rust and other garbage are avoided. The second insulating plate 8 is fixed on the inner surface of the storage tank and the upper surface of the concrete bottom plate 17 through a stud 12 and an anchoring threaded sleeve, the anchoring threaded sleeve is fixed in a mode of punching, expanding and embedding in advance on the wall of the concrete tank and the bottom of the tank, glue is coated on a stud gasket area when the stud 12 is installed on the anchoring threaded sleeve, and the purpose is that the glue in the gasket area and the moisture-proof layer on the wall of the concrete tank and the bottom of the tank form final moisture-proof seal after the stud 12 is installed in the anchoring threaded sleeve. The installation mode of the secondary insulating plate is that after the insulating plate coated with the epoxy resin strips 2 is placed in a corresponding grid, the insulating plate is gradually positioned and guided to be installed through grid side lines, centering bolt holes and bolt positions, then a stainless steel gasket or a pressing plate and a nut are preliminarily screwed and fixed on the insulating plate, whether the insulating plate is completely contacted and attached with wedge blocks is checked, the final position and the height of the insulating plate are adjusted through a special tool, the height difference between two adjacent insulating plates is controlled to be less than +/-0.5mm, and a complete secondary insulating plate plane is finally formed. The installation height of the second insulating plate 8 is 5-8 m of the height of the tank wall, and the expansion gap reserved in the installation process of the insulating plate is completely filled with glass wool or flexible insulation or rigid insulation, so that the insulating space is better isolated from the outside.
The first insulating plate 4 is fixed on the secondary shielding film 6 through bolts 12 which are pre-installed on the first insulating plate 4 or a strip steel plate 15, the insulating box is positioned according to bolt holes and back slotted holes, then a stainless steel gasket or a pressing plate and nuts are fastened to fix the insulating plate, the height difference of two adjacent insulating plates is controlled to be less than +/-0.5mm, a complete insulating plate plane is finally formed, and the main shielding film 10 can be installed on the next step, so that the installation of the first insulating plate 6 is required to be carried out after the welding work and the tightness test work of the secondary shielding film 6 are all finished.
Example 4
The primary shielding film 10 and the secondary shielding film 6 are mounted: first insulation board 4 and second insulation board 8 and the regional thermal protection installation that is used for preventing the plywood scaling loss of regulation accomplish the back, just can carry out the installation work of secondary barrier film 6 and main barrier film 10, the main overlap joint mode of taking of installation, the main principle of barrier film buckled plate installation is, guarantee two lapped buckled plate ripple departments overlap joint that coincide completely, in order to ensure corrugated continuity, corrugated continuity can be confirmed through the method of making the mark on pre-buried bar steel sheet 15 on the plywood before the buckled plate installation, the buckled plate can adopt in advance to be interrupted the mode of welding and fix on bar steel sheet 15, adjacent buckled plate can be more effectual overlap joint with it like this, the welding of buckled plate can adopt automatic weld or manual mode of welding to go on. Whether automatic welding or manual welding, the welding process needs to be identified for each type of equipment, joint form, welding position and the like. The height of the secondary shielding film 6 reaches the height area of 5-8 m of the tank wall, and a sealed secondary shielding layer is formed after the secondary shielding film 6 is welded through a sealing plate 27 embedded in the tank wall in advance. The height of the sealed space of the main shielding layer is the height of the tank wall, and a complete sealed space is formed after the sealing plate 27 embedded in advance at the top of the tank wall is welded with the main shielding 10.
Example 5
Installing the top of the storage tank: the top reinforced aluminum flat plate 23 is covered by insulating glass fiber and glass fiber felt or reinforced polyurethane foam plate, and is fixedly suspended at the lower part of the dome 18 through a plurality of groups of stainless steel connecting rods 22. After the prefabrication of the concrete dome with the low-temperature carbon steel lining plate 21 is finished, the concrete dome is lifted from the bottom of the tank to the top of the tank in an air pressure lifting mode, and a circle of stainless steel compression resistant ring 24 of the concrete dome is welded with an end sealing plate 27 sealed by the main layer shielding film 10 on the top of the tank wall, so that the final sealing is formed in the tank.
Example 6
Tightness test of the insulating layer: after the main shielding film 10 and the secondary shielding film 6 are welded, corresponding nondestructive flaw detection inspection should be carried out on all welding seam areas, after the flaw detection inspection is qualified, complete air tightness tests should be carried out on the main shielding film and the secondary shielding film, and ammonia gas or helium gas used in the air tightness tests can be injected and extracted through a sampling pipeline and a nitrogen gas injection pipeline which are arranged below the main shielding film and the secondary shielding film in advance. The tightness test of the main layer shielding layer and the secondary layer shielding layer can be divided into the following steps: the first ammonia or helium leakage detection test is that test gas is mixed and injected into a film layer in proportion, after the concentration meets the specified requirement, the ammonia test is that a special coating is sprayed on the surface of a welding seam (the coating is mainly characterized in that the coating changes from yellow to blue-violet when contacting ammonia) to contact and react, the helium test is that an instrument detects the welding seam area, and if the gas leakage instrument alarms. And secondly, carrying out a shielding film strength pressure test, wherein the pressure is monitored by pumping the space of the shielding layer to-800 mbar, and the vacuum decay rate of the shielding layer under the pressure of-800 mbar is monitored by the principle of the test. And thirdly, testing in a vacuum box, aiming at detecting injection holes, sampling holes or local repair areas reserved in the shielding layer, wherein the detection method is to cover the area to be detected by the vacuum box and then extract the area to be detected to-100 mbar and-500 mbar, and detect whether bubbles exist in the welding seam area.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (11)

1. The utility model provides a bimetal low temperature film land storage tank for liquefied natural gas stores, includes concrete bottom plate (17), concrete outer tank (1), inner tank (11), dome (18), insulating furred ceiling (19) and dampproof course (20) and constitutes its characterized in that: the concrete outer tank (1) and the inner tank (11) are longitudinally fixedly connected on the surface of a concrete bottom plate (17), the inner tank (11) is fixedly connected in the outer tank (1), the insulating suspended ceiling (19) is suspended and fixed at the lower part of a concrete dome (18), the moisture-proof layer (20) is fixed on the surface of the concrete bottom plate (17) and the outer tank (1), the inner tank (11) is sequentially provided with the moisture-proof layer (20), the epoxy resin adhesive layer (2), the first supporting plate (3), the first insulating plate (4), the second supporting plate (5), the secondary shielding film (6), the third supporting plate (7), the second insulating plate (8), the fourth supporting plate (9) and the main shielding film (10) from outside to inside, the first supporting plate (3) and the first insulating plate (4) are internally provided with a plurality of groups of studs (12) and are fixed on the concrete outer tank (1) through the studs (12) and the epoxy resin adhesive layer (2), the periphery of a plurality of groups of studs (12) is filled with filling insulation blocks (13), the first insulation plate (4) and the second insulation plate (8) are formed by splicing a plurality of standard module insulation plates, the periphery of the gap between two adjacent insulation plates is also filled with the filling insulation blocks (13), the first insulation plate (4) is connected with the second support plate (5), the inner side of the second support plate (5) is connected with the secondary shielding film (6) and a plurality of groups of strip-shaped steel plates (15) are embedded at the joint, the inner side of the secondary shielding film (6) is contacted with the third support plate (7), the boundaries of the second insulation plate (8) and the first insulation plate (4) are respectively provided with an L-shaped corner body (14) and a T-shaped corner body (26), the L-shaped corner body (14) and the T-shaped corner body (26) are respectively positioned at the joint of the secondary shielding film (6) and the main shielding film (10), the inner side and the outer side of the second insulating plate (8) are connected with a third supporting plate (7) and a fourth supporting plate (9), a plurality of groups of strip-shaped steel plates (15) are embedded in the surface of the fourth supporting plate (9), the fourth supporting plate (9) is connected with a main shielding film (10), reinforcing wedges (16) are installed inside the secondary shielding film (6) and the main shielding film (10), and the secondary shielding film (6) and the main shielding film (10) are welded together in an automatic welding or manual welding mode; the concrete dome (18) of the top fixedly connected with area low temperature carbon steel welt (21) of outer jar (1), it has strenghthened type aluminium system flat board (23) to hang under dome (18), dome (18) lower part is fixed to be hung stainless steel connecting rod (22) and is connected with low temperature carbon steel welt (21), dome (18) and jar wall top main layer shielding film's (10) junction welded connection have stainless steel compression ring (24), the top of inner tank (11) is equipped with I-beam (25).
2. The bimetallic cryogenic membrane land tank for liquefied natural gas storage of claim 1, wherein: the first insulating plate (4) and the second insulating plate (8) are both made of reinforced polyurethane foam materials and glass fiber materials, and the density is 20-300kg/m3The thickness of the first insulating plate (4) is 50mm-500mm, and the thickness of the second insulating plate (8) is 50mm-500 mm.
3. The bimetallic cryogenic membrane land tank for liquefied natural gas storage of claim 1, wherein: the surface of first backup pad (3), second backup pad (5), third backup pad (7) and fourth backup pad (9) all scribbles glue and first insulation board (4) and second insulation board (8) bonding, third backup pad (7) and fourth backup pad (9) are scribbled epoxy and are glued layer (2) and be connected with concrete outer tank (1).
4. The bimetallic cryogenic membrane land tank for liquefied natural gas storage of claim 1, wherein: inferior barrier film (6) and main barrier film (10) thickness are 0.5mm-3.0mm and adopt corrosion resistant plate, 9% nickel steel sheet, invar steel sheet or aluminum alloy plate to make, inferior barrier film (6) and main barrier film (10) shape are the protruding column structure of continuous arch ripple, strengthen wedge (16) and all install in inferior barrier film (6) and main barrier film (10) ripple department inboard, fix on second backup pad (5) and fourth backup pad (9) surface through the fixed mode of bonding or screw or bonding cooperation screw.
5. The bimetallic cryogenic membrane land tank for liquefied natural gas storage of claim 1, wherein: dome (18) are equipped with low temperature carbon steel welt (21), low temperature carbon steel welt (21) are fixed insulating furred ceiling (19) at the storage tank top through a plurality of stainless steel connecting rods (22), insulating furred ceiling (19) are covered or the reinforcing aluminum plate that reinforcing polyurethane foam material covered by glass fiber and glass fiber felt constitutes.
6. The bimetallic cryogenic membrane land tank for liquefied natural gas storage of claim 1, wherein: the tank bottom is divided into 20-30 fan-shaped areas by the design of the main shielding layer (10) and the secondary shielding layer (6) at the tank bottom (17), the tank walls corresponding to the fan-shaped areas are divided into 50-60 polygons, the corresponding included angles are 120-150 degrees, L-shaped corner bodies (14) and T-shaped corner bodies (26) are designed in the 90-150 degree included angle areas formed by the polygon tank walls and the tank bottom, sealing plates (27) are arranged at the end portions of the secondary shielding layer (6) and the main shielding layer (10), the thicknesses of the L-shaped corner bodies (14), the T-shaped corner bodies (26) and the end sealing plates (27) are 3-20mm, and the materials are stainless steel plates, 9% nickel steel plates, invar steel plates or aluminum alloy plates.
7. The bimetallic cryogenic membrane land tank for liquefied natural gas storage of claim 1, wherein: the thin film tank wall top and the 5-8 m area of tank wall are equipped with sealed steel sheet (27), the complete airtight space height of secondary shield is 5-8 m, the airtight space height of main shield (10) is the tank wall height, sealed steel sheet (27) thickness is 3-20mm, and what the material adopted is stainless steel sheet, 9% nickel steel sheet, invar steel sheet or aluminum alloy plate.
8. The bimetallic cryogenic membrane land tank for liquefied natural gas storage of claim 1, wherein: the first insulating plate (4) and the second insulating plate (8) are fixed on the inner surface of the concrete outer tank (1) and the upper surface of the concrete bottom plate (17) through a stud (12) and an anchoring threaded sleeve.
9. The bimetallic cryogenic membrane land tank for liquefied natural gas storage of claim 1, wherein: the first insulating plate (4) and the second insulating plate (8) are installed with installation gaps, and the installation gaps are filled with insulating blocks (13) made of flexible insulating materials or rigid insulating materials or glass fiber insulating materials.
10. The bimetallic cryogenic membrane land tank for liquefied natural gas storage of claim 1, wherein: the second insulating plate (8) is located in the 5-8 m area of the tank wall and is fixed by stainless steel studs (12), and the studs (12) are fixed on a strip-shaped steel plate (15) prefabricated on the first insulating plate (4) in an energy storage type welding mode or a manual welding mode or are prefabricated and installed on the first insulating plate (4).
11. The bimetallic cryogenic membrane land tank for liquefied natural gas storage of claim 1, wherein: the strip-shaped steel plate (15) is respectively fixed on the surfaces of the second support plate (5) and the secondary shielding film (6), the fourth support plate (9) and the main shielding film (10), the thickness of the strip-shaped steel plate (15) is 3mm-15mm, and the material is stainless steel plate, 9% nickel steel plate, invar steel plate or aluminum alloy plate.
CN202011230963.2A 2020-11-06 2020-11-06 A bimetal low temperature film land storage tank for liquefied natural gas stores Pending CN112303475A (en)

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Publication number Priority date Publication date Assignee Title
CN114962983B (en) * 2022-06-29 2024-03-08 中太能源科技(上海)有限公司 Storage container for storing liquefied gas
CN114962984B (en) * 2022-06-29 2024-02-02 中太能源科技(上海)有限公司 Storage container for storing liquefied gas and method for assembling the same
CN116753452B (en) * 2023-08-08 2023-11-24 中太能源科技(上海)有限公司 Liquefied natural gas storage container
CN116812083B (en) * 2023-08-30 2023-10-31 中太海事技术(上海)有限公司 Marine low-temperature storage cabin enclosure system and installation process thereof

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3190412A (en) * 1960-05-25 1965-06-22 Johns Manville All-metallic insulation
US3994693A (en) * 1973-12-05 1976-11-30 Lockheed Missiles & Space Company, Inc. Expandable metal membrane
FR2691520B1 (en) * 1992-05-20 1994-09-02 Technigaz Ste Nle Prefabricated structure for forming watertight and thermally insulating walls for containment of a fluid at very low temperature.
US6602477B2 (en) * 1996-08-05 2003-08-05 Usui Kokusai Sangyo Kaisha, Ltd. Metal honeycomb structure
KR100314193B1 (en) * 1999-07-20 2001-11-15 한갑수 Membrane for Storage Tank Containing Liquid Natural Gas
FR2798358B1 (en) * 1999-09-14 2001-11-02 Gaz Transport & Technigaz WATERPROOF AND THERMALLY INSULATING TANK INTEGRATED INTO A VESSEL CARRIER STRUCTURE WITH SIMPLIFIED ANGLE STRUCTURE
FR2798902B1 (en) * 1999-09-29 2001-11-23 Gaz Transport & Technigaz WATERPROOF AND THERMALLY INSULATING TANK INTEGRATED INTO A VESSEL CARRIER STRUCTURE AND METHOD OF MANUFACTURING INSULATING BOXES FOR USE IN THIS TANK
FR2813111B1 (en) * 2000-08-18 2002-11-29 Gaz Transport & Technigaz WATERPROOF AND THERMALLY INSULATING TANK IMPROVED LONGITUDINAL AREAS
ES2383392B1 (en) * 2007-05-29 2013-05-03 Hyundai Heavy Industries Co., Ltd. INSULATION SYSTEM OF LNG STORAGE TANKS THAT HAVE A SOLDED SECONDARY BARRIER AND CONSTRUCTION METHOD OF THE SAME
JP2010255805A (en) * 2009-04-28 2010-11-11 Panasonic Corp Vacuum heat insulating material
US8454781B2 (en) * 2011-04-13 2013-06-04 Bradford Company Method of making multilayer product having honeycomb core of improved strength
US9869090B2 (en) * 2011-08-12 2018-01-16 Atlantic Industries Limited Corrugated metal plate and overhead structure incorporating same
KR101884033B1 (en) * 2013-09-25 2018-07-31 현대중공업 주식회사 Cargo Tank for LNG Carrier
DE102013222858A1 (en) * 2013-11-11 2015-05-13 Tge Gas Engineering Gmbh Tank for storage of liquid ammonia
US9915392B2 (en) * 2014-03-13 2018-03-13 Transco Products Inc. Internal thermal insulation for metal reflective insulation
KR20150136824A (en) * 2014-05-28 2015-12-08 대우조선해양 주식회사 Membrane of tank for cryogenic fluid storage
FR3026459B1 (en) * 2014-09-26 2017-06-09 Gaztransport Et Technigaz SEALED AND INSULATING TANK WITH A BRIDGING ELEMENT BETWEEN THE PANELS OF THE SECONDARY INSULATING BARRIER
CN104456059B (en) * 2014-10-21 2016-09-28 中国海洋石油总公司 The installation method of the interior tank shell of self-support type LNG storage tank
KR102426137B1 (en) * 2018-06-15 2022-07-29 대우조선해양 주식회사 Insulation panel for liquefied cargo containment tank

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN114458944A (en) * 2022-02-23 2022-05-10 中太(苏州)氢能源科技有限公司 Land storage tank for storing liquid hydrogen and liquid helium
CN114562673A (en) * 2022-02-23 2022-05-31 中太(苏州)氢能源科技有限公司 Corrugated board moisture-proof layer for film tank
CN114458943A (en) * 2022-02-23 2022-05-10 中太(苏州)氢能源科技有限公司 Insulating and cold-insulating block for storing liquid hydrogen and liquid helium
WO2024001358A1 (en) * 2022-06-29 2024-01-04 中太海事技术(上海)有限公司 Liquefied-gas storage tank for transportation apparatuses, especially ships and other marine equipment
CN114811410A (en) * 2022-06-29 2022-07-29 中太海事技术(上海)有限公司 Liquefied gas storage tank for transport equipment, in particular marine equipment such as ships
CN115507227A (en) * 2022-07-26 2022-12-23 沪东中华造船(集团)有限公司 Installation method for nitrogen pipe of film tank
CN115415235A (en) * 2022-07-26 2022-12-02 沪东中华造船(集团)有限公司 Treatment method for pre-adhesion of stainless steel sealing plate of film tank
CN115507227B (en) * 2022-07-26 2024-05-10 沪东中华造船(集团)有限公司 Method for installing nitrogen pipe of thin film tank
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CN117068326B (en) * 2023-10-13 2024-02-09 沪东中华造船(集团)有限公司 Film type enclosure system
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