CN114623372A - Land storage container for storing liquefied gas - Google Patents

Land storage container for storing liquefied gas Download PDF

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Publication number
CN114623372A
CN114623372A CN202210280910.4A CN202210280910A CN114623372A CN 114623372 A CN114623372 A CN 114623372A CN 202210280910 A CN202210280910 A CN 202210280910A CN 114623372 A CN114623372 A CN 114623372A
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CN
China
Prior art keywords
plate
insulating
shielding film
storage container
land storage
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Pending
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CN202210280910.4A
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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 CN202210280910.4A priority Critical patent/CN114623372A/en
Publication of CN114623372A publication Critical patent/CN114623372A/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

Abstract

The invention discloses a land storage container for storing liquefied gas, which comprises a concrete bottom plate, a concrete outer 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 insulation board welding design mode and an environment-friendly mode of prefabricating a foaming insulation 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

Land storage container for storing liquefied gas
The application is a divisional application of an invention patent application with the filing date of 6/11/2020 and the filing number of 202011230963.2 entitled "bimetallic cryogenic membrane land storage tank for liquefied natural gas storage".
Technical Field
The invention relates to the technical field of Liquefied Natural Gas (LNG) cryogenic storage devices, in particular to a land storage container for storing liquefied gas.
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, both domestic and international.
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 greatly increased. 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 of the studs, 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 arranged inside corrugated structures of the secondary shielding film and the main shielding film, the shielding film units forming 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 is dull and stereotyped to have hung strenghthened type aluminium system under the dome, the dome lower part is fixed to have hung the stainless steel connecting rod and be connected with low temperature carbon steel welt, the dome has stainless steel compression ring with jar wall top main 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 support plate, the second support plate, the third support plate and the fourth support plate are coated with glue to be bonded with the first insulating plate and the second insulating plate, and the third support plate and the fourth support plate are coated with epoxy resin adhesive layers to be connected with the concrete outer tank.
As the improvement of above-mentioned technical scheme, constitute the thickness of the barrier film unit 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 plate and main barrier plate shape are continuous arch ripple protruding column structure, strengthen the wedge and all install in the ripple structure of secondary barrier film and main barrier film, 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 material'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, sealing steel plates are arranged at the top of the thin film tank wall and 5-8 m areas of the tank wall, the complete closed space height of the secondary shielding layer is 5-8 m, the closed space height of the main shielding layer is the tank wall height, 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.
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 the 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 block diagram of a shielding film unit according to the present invention;
FIG. 5 is a schematic cross-sectional view of a shielding film unit according to 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 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. an end seal plate; 61a-64a, long wavelength band; 61b-64b, short ripple segments.
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 that concrete bottom plate 17, concrete outer tank 1, inner tank 11, dome 18, insulating furred ceiling 19 and dampproof course 20 constitute its characterized in that: the concrete outer tank 1 and the inner tank 11 are longitudinally and 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 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 stuffed on the periphery of the studs 12, the first insulating plate 4 and the second insulating plate 8 are formed by splicing 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 shielding film units forming 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 under 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 barrier film 10, the tank deck design has round I-beam 25 for the used technical platform of fixed construction, hanging flower basket, crane, track 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, constitute the thickness of the barrier film unit 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 bulge 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 plates 27 are designed in the areas 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 sealed space is formed by the tank wall sealing steel plates 27, 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 tank wall top sealing steel plates 27, the thickness of the sealing steel plates 27 is 3-20mm, and the materials are 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 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.
In an improvement of the technical scheme, the second insulating plate 8 used in the area of 5-8 meters on 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 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, at least the allowance of 6mm-8mm height is ensured to ensure that the contact width of the epoxy resin and the concrete outer tank reaches the minimum 10mm-18mm 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 liner area when the stud 12 is installed on the anchoring threaded sleeve, and the purpose is that the glue in the liner area after the stud 12 is installed in the anchoring threaded sleeve and the moisture-proof layer on the wall of the concrete tank and the moisture-proof layer on the bottom of the tank form final moisture-proof sealing. 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: after the thermal protection installation of the first insulating plate 4, the second insulating plate 8 and the specified area for preventing the burning loss of the plywood is completed, the installation work of the secondary shielding film 6 and the main shielding film 10 can be carried out, the installation mainly adopts an overlap joint mode, the installation of the shielding film corrugated plates mainly adopts the principle that the corrugated parts of two overlapped shielding film units are completely matched and overlapped to ensure the continuity of corrugations, the continuity of the corrugations can be determined by a method of marking on the strip-shaped steel plate 15 pre-embedded on the plywood before the shielding film units are installed, the shielding film units can be fixed on the strip-shaped steel plate 15 in a discontinuous welding mode in advance, so that the adjacent shielding film units can be more effectively overlapped with the shielding film units, and the welding of the shielding film units can be carried out in an automatic welding or manual welding mode. 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 film 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 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, the main shielding film and the secondary shielding film should be subjected to complete air tightness tests, and ammonia gas or helium gas used in the air tightness tests can be injected and extracted through a sampling pipeline and a nitrogen injection pipeline which are arranged below the main shielding film and the secondary shielding film in advance. The tightness test of the main shielding layer and the secondary shielding layer can be divided into the following steps: the first ammonia or helium leakage detection test is that test gases are mixed and injected into a thin 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 leaks, the instrument gives an alarm. 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 to be the basic principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative 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 (18)

1. A land-based storage vessel for storing liquefied gas, comprising:
a concrete layer (1, 17) located on the outermost side;
a moisture barrier (20), said moisture barrier (20) being secured to an inner surface of said concrete layer (1, 17);
the first support plate (3), the first support plate (3) is positioned on the inner side of the moisture-proof layer (20) and is fixed on the moisture-proof layer (20) through an epoxy resin adhesive layer (2);
a plurality of first insulating plates (4), wherein the first insulating plates (4) are positioned on the inner side of the first supporting plate (3) and are fixed on the first supporting plate (3) and the concrete layer (1) through studs (12), and a gap is reserved between each first insulating plate (4) and the adjacent first insulating plate (4);
a plurality of insulation blocks (13), the insulation blocks (13) being filled in gaps between the first insulation plates (4) and inside studs (12);
the second supporting plate (5) is positioned on the inner side of the first insulating plate (4) and connected with the first insulating plate, and a plurality of groups of strip-shaped steel plates (15) are embedded on the inner side of the second supporting plate (5);
the secondary shielding film (6) is formed by splicing a plurality of shielding film units, the secondary shielding film (6) is positioned on the inner side of the second supporting plate (5) and connected with the second supporting plate, and a plurality of groups of strip-shaped steel plates (15) are embedded in the connecting position;
a third support plate (7), said third support plate (7) being located inside the secondary shielding film (6) and in contact therewith;
a plurality of second insulating plates (8), wherein the second insulating plates (8) are positioned on the inner side of the third supporting plate (7) and connected with the third supporting plate, a gap is reserved between each second insulating plate (8) and the adjacent second insulating plate (8), and the insulating blocks (13) are filled in the gaps;
the fourth supporting plate (9) is positioned on the inner side of the second insulating plate (8) and connected with the second insulating plate, and a plurality of groups of strip-shaped steel plates (15) are embedded on the inner side of the fourth supporting plate (9);
the main shielding film (10) is formed by splicing a plurality of shielding film units, the main shielding film (10) is positioned on the inner side of the fourth supporting plate (9) and connected with the fourth supporting plate, and a plurality of groups of strip-shaped steel plates (15) are embedded in the joints;
a corner body (14, 26), the corner body (14, 26) being located at a corner of the land storage container, for connecting the support plate, the insulating plate and the shielding film at the corner;
wherein each of the shielding film units is integrally formed with a continuous arch-shaped corrugated convex-like structure, including:
a first set of corrugations comprising a first pair of corrugations (61a, 61b) and a second pair of corrugations (62a, 62b) extending parallel to each other;
a second set of corrugations extending perpendicular to the first set of corrugations and comprising a third pair of corrugations (63a, 63b) and a fourth pair of corrugations (64a, 64b) extending parallel to each other;
wherein each pair of corrugated structures comprises a first corrugated section (61a, 62a, 63a, 64a) and a second corrugated section (61b, 62b, 63b, 64b) shorter than the first corrugated section, gaps are formed between the first corrugated section and the second corrugated section, and the first corrugated sections (61a, 62a, 63a, 64a) in each group of corrugated structures respectively pass through corresponding gaps in the other group of corrugated structures, so that the shielding film unit forms a rotational symmetric structure.
2. The land storage container according to claim 1, wherein said first set of corrugations and said second set of corrugations constitute a four-sided continuous structure, and when two or more of said shielding film units are arranged adjacently, any one of said first corrugation segments (61a, 62a, 63a, 64a) of one of said shielding film units can form a continuous corrugation structure with any one of said second corrugation segments (61b, 62b, 63b, 64b) of another adjacent one of said shielding film units.
3. The land storage container according to claim 2, wherein each corrugation comprises two peaks and one valley between the two peaks when viewed in a plane perpendicular to the direction of extension of the corrugation, the peaks and valleys forming a continuous wave structure.
4. The land storage container of claim 3, wherein the shielding film unit is made of stainless steel, 9% nickel steel, invar steel, or aluminum alloy.
5. The land storage container of claim 4, wherein the shielding film unit has a thickness of 0.5mm to 3.0 mm.
6. Land storage container according to claim 5, wherein the corner bodies (14, 26) comprise an L-shaped corner body (14) for the corner formed by a polygonal container wall and a T-shaped corner body (26) for the corners formed by two container walls and a container bottom.
7. The land storage container of claim 5, wherein the barrier film units are welded together by automated welding or manual welding.
8. A land storage container according to claim 7, wherein reinforcing wedges (16) are provided within the corrugated structure of the shielding film unit, said reinforcing wedges (16) being fixed to the surface of the second support plate (5) and the fourth support plate (9) by means of gluing, screwing or a combination of gluing and screwing.
9. The land storage container of claim 1, further comprising a dome (18) and an insulated ceiling (19), wherein the insulated ceiling (19) is suspended fixed below the dome (18).
10. The land storage container of claim 9, wherein the dome (18) is provided 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 land storage container through a plurality of stainless steel connecting rods (22), an aluminum flat plate (23) is hung below the insulating ceiling (19), a stainless steel compression ring (24) is welded at the joint of the dome (18) and a main shielding film (10) on the top of the concrete layer (1), and an I-beam (25) is arranged on the top of the land storage container.
11. Land storage container according to claim 10, wherein the insulating ceiling (19) consists of glass fibers and reinforced aluminium sheets covered by glass fiber felt or reinforced polyurethane foam.
12. Land storage container according to claim 1, wherein the first insulating panel (4) and the second insulating panel (8) are both made of reinforced polyurethane foam material and glass fiber material, having a density of 20-300kg/m3And the thicknesses of the first insulating plate (4) and the second insulating plate (8) are both 50mm-500 mm.
13. A land storage container according to claim 1, wherein 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 all coated with glue to adhere to the first insulating plate (4) and the second insulating plate (8), the third support plate (7) and the fourth support plate (9) being coated with an epoxy glue layer (2) to connect with the concrete layer (1).
14. The land storage container as claimed in claim 1, wherein the primary and secondary shielding films (10, 6) are designed in 20-30 sector areas on the concrete layer (17), the concrete layer (1) corresponding to the sector areas is designed in 50-60 polygons, the corresponding included angle is 120-150 degrees, the polygon tank wall is provided with the L-shaped corner body (14) and the T-shaped corner body (26) at the 90-150 degree included angle area with the concrete layer (17), and the secondary shielding film (6) and the primary shielding film (10) are provided with sealing plates (27) at their ends, the thickness of the L-shaped corner body (14), the T-shaped corner body (26), and the end sealing plates (27) is 3-20mm, and is made of stainless steel plate, 9% nickel steel plate, invar steel plate, or aluminum alloy plate.
15. The land storage container of claim 1, wherein the top of the container wall and the 5-8 m area of the container wall of the land storage container are provided with a sealing steel plate (27), the complete closed space height of the secondary shielding film (6) is 5-8 m, the closed space height of the primary shielding film (10) is the height of the tank wall, and the thickness of the sealing steel plate (27) is 3-20mm and is made of stainless steel plate, 9% nickel steel plate, invar steel plate or aluminum alloy plate.
16. Land storage container according to claim 1, wherein the first (4) and second (8) insulating panels are fixed to the inner surface of the concrete layer (1, 17) by means of studs (12) and anchoring inserts.
17. Land storage vessel according to claim 1, wherein the second insulating plate (8) is located in the region of 5-8 meters of the tank wall and is fixed with studs (12), the studs (12) being fixed on the strip steel plate (15) on the first insulating plate (4) by energy-storage welding or manual welding or being prefabricated on the first insulating plate (4).
18. The land storage container according to claim 1, wherein the strip steel plate (15) is fixed on the surfaces of the second support plate (5) and the secondary shielding film (6), the fourth support plate (9) and the primary shielding film (10), respectively, and the strip steel plate (15) has a thickness of 3mm to 15mm and is made of a stainless steel plate, a 9% nickel steel plate, an invar steel plate or an aluminum alloy plate.
CN202210280910.4A 2020-11-06 2020-11-06 Land storage container for storing liquefied gas Pending CN114623372A (en)

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CN202011230963.2A CN112303475A (en) 2020-11-06 2020-11-06 A bimetal low temperature film land storage tank for liquefied natural gas stores

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Cited By (5)

* Cited by examiner, † Cited by third party
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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
CN114962984A (en) * 2022-06-29 2022-08-30 中太海事技术(上海)有限公司 Storage container for storing liquefied gas and method for assembling the same
CN114962983A (en) * 2022-06-29 2022-08-30 中太海事技术(上海)有限公司 Storage container for storing liquefied gas
CN116753452A (en) * 2023-08-08 2023-09-15 中太海事技术(上海)有限公司 Liquefied natural gas storage container
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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

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