CN112228764A - High-pressure hydrogen storage cylinder made of plastic lining fiber reinforced composite material - Google Patents

High-pressure hydrogen storage cylinder made of plastic lining fiber reinforced composite material Download PDF

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Publication number
CN112228764A
CN112228764A CN202011212307.XA CN202011212307A CN112228764A CN 112228764 A CN112228764 A CN 112228764A CN 202011212307 A CN202011212307 A CN 202011212307A CN 112228764 A CN112228764 A CN 112228764A
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China
Prior art keywords
gas cylinder
fiber
plastic
metal gas
metal
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Pending
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CN202011212307.XA
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Chinese (zh)
Inventor
郑传祥
林娇
吕昊
苏卫东
申玲
彭茂
鞠修龙
戴煜宸
翁益民
胡正云
王振宇
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Zhejiang University ZJU
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Zhejiang University ZJU
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Priority to CN202011212307.XA priority Critical patent/CN112228764A/en
Publication of CN112228764A publication Critical patent/CN112228764A/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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/10—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for protection against corrosion, e.g. due to gaseous acid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/16—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of plastics materials
    • 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
    • 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
    • F17C13/06—Closures, e.g. cap, breakable member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0114—Shape cylindrical with interiorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—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
    • 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
    • F17C2203/0658—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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/0126—One vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0311—Closure means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2109—Moulding
    • F17C2209/2118—Moulding by injection
    • 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
    • F17C2209/22—Assembling processes
    • F17C2209/224—Press-fitting; Shrink-fitting
    • 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
    • F17C2209/227—Assembling processes by adhesive means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/234—Manufacturing of particular parts or at special locations of closing end pieces, e.g. caps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

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

Abstract

The invention discloses a high-pressure hydrogen storage cylinder made of a plastic lining fiber reinforced composite material. Comprises a plastic lining, an opening end of a metal gas cylinder and a tail end of the metal gas cylinder; the outer side of the fiber reinforced layer is wound with a glass fiber protective layer, and the outer sides of the end sockets at two ends are provided with gas cylinder end socket anti-collision layers. An O-shaped ring and a check washer are arranged between the open end of the plastic lining and the axial lower end face of the open end of the metal gas cylinder and are pressed tightly by a nut and a spring washer. The invention adopts three sealing of O-shaped ring sealing, gluing sealing and plastic lining self-tightening sealing, when the pressure in the gas cylinder is higher, the tighter the pressure between the plastic lining and the opening end of the metal gas cylinder is, and the more difficult the gas leakage is.

Description

High-pressure hydrogen storage cylinder made of plastic lining fiber reinforced composite material
Technical Field
The invention relates to high-pressure hydrogen storage equipment, in particular to a plastic lining fiber reinforced composite material high-pressure hydrogen storage cylinder.
Background
With the continuous development of new energy automobiles, hydrogen energy is widely applied as a clean and efficient renewable energy source. High-pressure hydrogen storage is still a current main hydrogen storage mode, and most of the currently used gas cylinder liners are metal liners, and carbon fiber glass fibers and the like are wound on the outer layers. With the improvement of the hydrogen storage density requirement of unit mass, the plastic lining composite hydrogen storage cylinder is developed.
There are many patents related to the structure of the iv-type gas cylinder, such as korean patent US7648042B2 "a metal cylinder port design for a composite High-pressure gas cylinder", US20170276294a1 "High-gas-insulated metallic non-gaseous-cylinder for a High-pressure composite vessel", US20170276294a1 "Boss and liner interface for a pressure vessel", toyota JP 200606060484 "High-pressure gas cylinder seal", international patent PCT/JP2009/060067 "of toyota auto corporation," manufacturing method of gas cylinder, and "new practical patent CN 201721786654.7" of medium material science and technology (chengdu) limited "tail structure of a High-pressure gas cylinder with an outer diameter of a plastic liner larger than 200 mm. The patents make relevant designs on the structure and the sealing method of the gas cylinder, the structure forms are various, and sealing can be realized in the gas storage using process. However, these structures are complicated to manufacture, require high machining accuracy, and are relatively expensive.
Disclosure of Invention
In order to overcome the problems in the background technical field, the invention aims to provide a plastic lining fiber reinforced composite material high-pressure hydrogen storage cylinder which is simple in structure and manufacture and reliable in sealing.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
the invention comprises the following steps: the plastic liner, the opening end of the metal gas cylinder and the tail end of the metal gas cylinder; the outer side of the fiber reinforced layer is wound with a glass fiber protective layer, and the outer sides of the glass fiber protective layers of the end sockets at two ends of the metal gas cylinder are provided with gas cylinder end socket anti-collision layers;
an O-shaped ring is arranged between the opening end of the plastic lining and the axial lower end surface of the opening end of the metal gas cylinder, and the O-shaped ring, an inner check ring on the inner side and an outer check ring on the outer side are arranged in an O-shaped ring groove on the axial lower end surface of the opening end of the metal gas cylinder; the O-shaped ring is screwed with the thread at the lower end of the opening end of the metal gas cylinder through the plastic lining, the anti-loosening gasket and the spring gasket in sequence and the compression nut; the anti-loosening gasket is uniformly provided with a plurality of metal sheets along the outer circumference; the outer side of the lower end of the opening end of the metal gas cylinder, which is provided with the thread, is provided with a groove, and the width of the groove is larger than that of the metal sheet on the anti-loosening gasket.
The opening end of the metal gas cylinder is of an axisymmetric cylindrical structure with two small ends and a large middle part, and a through hole is formed in the center of the opening end of the metal gas cylinder; the outer side of the upper port of the opening end of the metal gas cylinder is provided with a raised spigot which prevents the fiber from overflowing during winding, and the inner side of the upper port is provided with threads.
The locking gasket is a metal ring, the inner side of the locking gasket is radially provided with a bulge, and the outer circumference of the locking gasket is provided with a plurality of bulges capable of being bent.
The large end of the compression nut is cylindrical, the small end of the compression nut is cylindrical metal of the hexagon nut, a groove is formed in the outer circumference of the cylindrical large end of the compression nut, the width of the groove is larger than the width of a protrusion on the annular outer circumference of the anti-loosening gasket, and the depth of the groove is 3-5 mm.
The tail end of the metal gas cylinder is arranged between the plastic lining and the fiber reinforced resin matrix composite material layer, and a concave hole which does not penetrate through the thickness direction of the gas cylinder is formed in the lower end of the shaft center of the tail end of the metal gas cylinder.
The fiber is carbon fiber, boron fiber, Kevlar fiber or glass fiber.
The fiber reinforced layer matrix is epoxy resin, phenolic resin or bismaleimide resin.
The material of the opening end of the metal gas cylinder and the material of the tail end of the metal gas cylinder are aluminum alloy or stainless steel.
The plastic lining material is nylon 6 or nylon 66.
The O-shaped ring is made of butadiene-acrylonitrile rubber or silicon rubber.
The invention has the beneficial effects that:
1) light weight and high gas storage density: the invention adopts nylon 6, nylon 66 and the like to manufacture the inner lining of the gas cylinder, the inner lining is processed by a welding method after injection molding, and compared with other processes such as blow molding, the inner lining obtained by adopting the injection molding process has high precision, good compactness and lower porosity. Lighter in weight compared to metal lined type iii gas cylinders.
2) The metal gas cylinder open end department adopts the sealing on the axial terminal surface, sealing performance is good, adopt multiple sealed reliable of ensureing to seal between metal gas cylinder open end axial terminal surface and plastics inside lining contact surface, the sealed O type circle that adopts on the metal gas cylinder open end axial terminal surface of first layer is sealed, retrain with interior shelves circle and outer shelves circle to O type circle and prevent the extrusion destruction, there is locking gasket above the plastics inside lining with O type circle contact, spring shim and gland nut compress tightly, and there is locking gasket to pin gland nut and prevent the pine in service and take off, the gas tightness has effectively been ensured. The second is sealed again, adopts special adhesive to bond metal gas cylinder open end and plastics inside lining contact surface between metal gas cylinder open end axial terminal surface and plastics inside lining contact surface, has further strengthened sealed effect, and the effectual material of having avoided leads to warping too big, the problem of sealed inefficacy because of the difference. The third is that it is sealed to adopt the self-tightening type to seal the design, and pressure in the gas cylinder is higher, and gas pressure is bigger to the plastic lining effort, and it is tighter to press between plastic lining and the metal gas cylinder open end, and it is harder that gas passes through the clearance leakage between plastic lining and the metal gas cylinder open end.
Drawings
Fig. 1 is a cross-sectional view of the structure of the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a front sectional view of the open end of the metal cylinder.
FIG. 4 is a top view of a lock washer.
Fig. 5 is a top view of the compression nut.
In the figure: 1. the gas cylinder head anticollision layer, 2, the glass fiber protective layer, 3, the fibre enhancement layer, 4, metal gas cylinder open end, 5, interior retaining ring, 6, outer retaining ring, 7, the plastics inside lining, 8, O type circle, 9, locking gasket, 10, spring gasket, 11, gland nut, 12, metal gas cylinder tail end.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 and 2, the invention comprises a plastic liner 7, a metal cylinder open end 4 and a metal cylinder tail end 12; the winding has prestressed fiber reinforcement layer 3 outside plastic liner 7, the axial lower terminal surface of 7 open ends of plastic liner and metal gas cylinder open end 4 is bonded with the adhesive, the up end laminating of 7 lower extremes of plastic liner and metal gas cylinder tail end 12, fiber reinforcement layer 3 and the axial up end laminating of metal gas cylinder open end 4 of 7 upper extremes of plastic liner, fiber reinforcement layer 3 and the axial lower terminal surface laminating of metal gas cylinder tail end 12 of 7 lower extremes of plastic liner, the outside winding of fiber reinforcement layer 3 has glass fiber protective layer 2, the outside of the glass fiber protective layer 2 of metal gas cylinder both ends head is equipped with gas cylinder head anticollision layer 1.
An O-shaped ring 8 is arranged between the opening end of the plastic lining 7 and the axial lower end surface of the opening end 4 of the metal gas cylinder, and the O-shaped ring 8, an inner check ring 5 on the inner side and an outer check ring 6 on the outer side are arranged in an O-shaped ring groove on the axial lower end surface of the opening end 4 of the metal gas cylinder; the O-shaped ring 8 is screwed with the thread at the lower end of the opening end 4 of the metal gas cylinder through a plastic lining 7, a locking gasket 9 and a spring gasket 10 in sequence by a compression nut 11; a plurality of metal sheets are uniformly distributed on the anti-loosening gasket 9 along the outer circumference; the outer side of the lower end thread of the metal gas cylinder opening end 4 is provided with a groove, and the width of the groove is more than 1mm larger than the width of a metal sheet on the anti-loosening gasket 9.
As shown in fig. 1, 2 and 3, the open end 4 of the metal gas cylinder is an axisymmetric cylindrical structure with two small ends and a large middle part, and a through hole is formed in the center of the open end 4 of the metal gas cylinder; a raised spigot for preventing the overflow of fibers during winding is arranged outside the upper port of the opening end 4 of the metal gas cylinder, and a thread is arranged inside the upper port; an O-shaped ring groove is arranged on the surface of the axial lower end surface of the opening end 4 of the metal gas cylinder, which is attached to the plastic lining 7.
As shown in fig. 1, 2 and 4, the anti-loose pad 9 is a metal ring, a protruding metal sheet is radially arranged on the inner side of the ring of the anti-loose pad 9, and a plurality of (3-8) bendable protruding metal sheets are arranged on the outer circumference of the ring of the anti-loose pad 9.
As shown in fig. 1, 2 and 5, the large end of the compression nut 11 is cylindrical, the small end of the compression nut is cylindrical metal of a hexagon nut, a groove is formed on the outer circumference of the cylindrical large end of the compression nut 11, the width of the groove is more than 1mm larger than the width of the protrusion on the annular outer circumference of the anti-loose gasket 9, and the depth of the groove is 3-5 mm.
As shown in fig. 1, the tail end 12 of the metal gas cylinder is arranged between the plastic lining 7 and the fiber reinforced resin matrix composite material layer 3, and a concave hole which does not penetrate through the thickness direction of the gas cylinder is arranged at the lower end of the axial center of the tail end 12 of the metal gas cylinder for weight reduction.
The fiber is carbon fiber, boron fiber, Kevlar fiber or glass fiber and the like.
The fiber reinforced layer matrix is epoxy resin, phenolic resin or bismaleimide resin and the like.
The material of the opening end 4 of the metal gas cylinder and the material of the tail end 12 of the metal gas cylinder are aluminum alloy or other stainless steel or high-strength steel.
The plastic lining 7 is made of polymer materials such as nylon 6, nylon 66 or polypropylene.
The O-shaped ring 8 is made of sealing materials such as nitrile rubber, silicon rubber or fluororubber and the like with hydrogen corrosion resistance.
The manufacturing process of the high-pressure hydrogen storage cylinder made of the plastic lining fiber reinforced composite material comprises the following steps:
1) the plastic lining 7 is divided into two halves, each half is processed by an injection molding process, and then a complete plastic lining is spliced by circular seams by using a welding method.
2) An inner retainer ring 5, an O-shaped ring 8 and an outer retainer ring 6 are sequentially placed into an O-shaped ring groove on the axial lower end face of the opening end 4 of the metal gas cylinder, one end of the opening end 4 of the metal gas cylinder, which is provided with the O-shaped ring, is pressed into the opening end of the plastic lining 7, and the axial lower end face of the opening end 4 of the metal gas cylinder is glued with the outer edge of the plastic lining 7 after being tightly attached.
3) The anti-loosening gasket 9 and the spring gasket 10 are sequentially placed on a lower cylindrical thread of the open end 4 of the metal gas cylinder, the cylindrical end opening of the compression nut 11 is screwed on the lower cylindrical thread of the open end 4 of the metal gas cylinder, the O-shaped ring 8 and the plastic lining 7 are compressed and sealed, and then the metal sheet on the outer circumference of the anti-loosening gasket 9 is bent and embedded into an outer side groove of the compression nut 11.

Claims (10)

1. A high-pressure hydrogen storage cylinder made of a plastic lining fiber reinforced composite material is characterized in that: comprises a plastic lining (7), a metal gas cylinder opening end (4) and a metal gas cylinder tail end (12); a prestressed fiber reinforced layer (3) is wound on the outer side of a plastic liner (7), the open end of the plastic liner (7) is bonded with the axial lower end face of the open end (4) of the metal gas cylinder by an adhesive, the lower end of the plastic liner (7) is attached to the upper end face of the tail end (12) of the metal gas cylinder, the fiber reinforced layer (3) on the upper end of the plastic liner (7) is attached to the axial upper end face of the open end (4) of the metal gas cylinder, the fiber reinforced layer (3) on the lower end of the plastic liner (7) is attached to the axial lower end face of the tail end (12) of the metal gas cylinder, a glass fiber protective layer (2) is wound on the outer side of the fiber reinforced layer (3), and gas cylinder end socket anti-;
an O-shaped ring (8) is arranged between the opening end of the plastic lining (7) and the axial lower end surface of the opening end (4) of the metal gas cylinder, and the O-shaped ring (8), an inner check ring (5) on the inner side and an outer check ring (6) on the outer side are arranged in an O-shaped ring groove on the axial lower end surface of the opening end (4) of the metal gas cylinder; the O-shaped ring (8) is screwed with the thread at the lower end of the opening end (4) of the metal gas cylinder through a compression nut (11) sequentially through a plastic lining (7), a locking gasket (9) and a spring gasket (10); a plurality of metal sheets are uniformly distributed on the anti-loosening gasket (9) along the outer circumference; the outer side of the lower end of the metal gas cylinder opening end (4) with the thread is provided with a groove, and the width of the groove is larger than that of a metal sheet on the anti-loosening gasket (9).
2. The plastic-lined fiber-reinforced composite high-pressure hydrogen storage cylinder according to claim 1, characterized in that: the metal gas cylinder opening end (4) is of an axisymmetric cylindrical structure with two small ends and a large middle part, and a through hole is formed in the center of the metal gas cylinder opening end (4); the outer side of the upper port of the opening end (4) of the metal gas cylinder is provided with a raised spigot which prevents the overflow when the fiber is wound, and the inner side of the upper port is provided with a thread.
3. The plastic-lined fiber-reinforced composite high-pressure hydrogen storage cylinder according to claim 1, characterized in that: the anti-loosening gasket (9) is a metal ring, the inner side of the ring of the anti-loosening gasket (9) is provided with a bulge in the radial direction, and the outer circumference of the ring of the anti-loosening gasket (9) is provided with a plurality of bulges capable of being bent.
4. The plastic-lined fiber-reinforced composite high-pressure hydrogen storage cylinder according to claim 1, characterized in that: the large end of the compression nut (11) is cylindrical, the small end of the compression nut is cylindrical metal of a hexagon nut, a groove is formed in the outer circumference of the cylindrical large end of the compression nut (11), the width of the groove is larger than the width of a protrusion on the annular outer circumference of the anti-loosening gasket (9), and the depth of the groove is 3-5 mm.
5. The plastic-lined fiber-reinforced composite high-pressure hydrogen storage cylinder according to claim 1, characterized in that: the metal gas cylinder tail end (12) is arranged between the plastic lining (7) and the fiber reinforced resin matrix composite material layer (3), and a concave hole which does not penetrate through the thickness direction of the gas cylinder is formed in the lower end of the shaft center of the metal gas cylinder tail end (12).
6. The plastic-lined fiber-reinforced composite high-pressure hydrogen storage cylinder according to claim 1, characterized in that: the fiber is carbon fiber, boron fiber, Kevlar fiber or glass fiber.
7. The plastic-lined fiber-reinforced composite high-pressure hydrogen storage cylinder according to claim 1, characterized in that: the matrix of the fiber reinforced layer (3) is epoxy resin, phenolic resin or bismaleimide resin.
8. The plastic-lined fiber-reinforced composite high-pressure hydrogen storage cylinder according to claim 1, characterized in that: the open end (4) of the metal gas cylinder and the tail end (12) of the metal gas cylinder are made of aluminum alloy or stainless steel.
9. The plastic-lined fiber-reinforced composite high-pressure hydrogen storage cylinder according to claim 1, characterized in that:
the plastic inner liner (7) is made of nylon 6 or nylon 66.
10. The plastic-lined fiber-reinforced composite high-pressure hydrogen storage cylinder according to claim 1, characterized in that: the O-shaped ring (8) is made of butadiene-acrylonitrile rubber or silicon rubber.
CN202011212307.XA 2020-11-03 2020-11-03 High-pressure hydrogen storage cylinder made of plastic lining fiber reinforced composite material Pending CN112228764A (en)

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CN202011212307.XA CN112228764A (en) 2020-11-03 2020-11-03 High-pressure hydrogen storage cylinder made of plastic lining fiber reinforced composite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011212307.XA CN112228764A (en) 2020-11-03 2020-11-03 High-pressure hydrogen storage cylinder made of plastic lining fiber reinforced composite material

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Publication Number Publication Date
CN112228764A true CN112228764A (en) 2021-01-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114370597A (en) * 2022-01-17 2022-04-19 南京工业大学 High-safety intelligent hydrogen storage device and manufacturing and using methods thereof
CN114383037A (en) * 2021-12-22 2022-04-22 连云港神鹰复合材料科技有限公司 Preparation method of air cylinder made of carbon fiber composite material
CN117450419A (en) * 2023-12-26 2024-01-26 中材科技（苏州）有限公司 Plastic liner of high-pressure gas cylinder and forming method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114383037A (en) * 2021-12-22 2022-04-22 连云港神鹰复合材料科技有限公司 Preparation method of air cylinder made of carbon fiber composite material
CN114383037B (en) * 2021-12-22 2023-08-11 连云港神鹰复合材料科技有限公司 Preparation method of carbon fiber composite material air cylinder
CN114370597A (en) * 2022-01-17 2022-04-19 南京工业大学 High-safety intelligent hydrogen storage device and manufacturing and using methods thereof
CN117450419A (en) * 2023-12-26 2024-01-26 中材科技（苏州）有限公司 Plastic liner of high-pressure gas cylinder and forming method thereof
CN117450419B (en) * 2023-12-26 2024-03-19 中材科技（苏州）有限公司 Plastic liner of high-pressure gas cylinder and forming method thereof

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