CN113566107A - Composite gas cylinder with metal composite gas port and manufacturing method thereof - Google Patents
Composite gas cylinder with metal composite gas port and manufacturing method thereof Download PDFInfo
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- CN113566107A CN113566107A CN202110834653.XA CN202110834653A CN113566107A CN 113566107 A CN113566107 A CN 113566107A CN 202110834653 A CN202110834653 A CN 202110834653A CN 113566107 A CN113566107 A CN 113566107A
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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
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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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
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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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/06—Closures, e.g. cap, breakable member
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/03—Orientation
- F17C2201/032—Orientation with substantially vertical main axis
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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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0614—Single wall
- F17C2203/0619—Single wall with two layers
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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
- 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
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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
- 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
- F17C2203/0665—Synthetics in form of fibers or filaments radially wound
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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
- 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
- F17C2203/067—Synthetics in form of fibers or filaments helically wound
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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
- 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
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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
- 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
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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
- 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
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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
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0388—Arrangement of valves, regulators, filters
- F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
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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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/21—Shaping processes
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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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/21—Shaping processes
- F17C2209/2154—Winding
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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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/21—Shaping processes
- F17C2209/2181—Metal working processes, e.g. deep drawing, stamping or cutting
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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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/221—Welding
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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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/224—Press-fitting; Shrink-fitting
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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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/23—Manufacturing of particular parts or at special locations
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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
- 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
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- 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)
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- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a composite gas cylinder with a metal composite gas port and a manufacturing method thereof. This composite gas cylinder with metal composite gas port, including the aluminum alloy inner bag, combined material layer and metal composite gas port, wherein, metal composite gas port includes aluminum alloy go-between and high strength metal air cock, realize being connected of high strength metal air cock and aluminum alloy inner bag through the aluminum alloy go-between, the aluminum alloy gas port is compared to the metal composite gas port, it is high to have intensity, hardness is high, wear resistance is good, fatigue resistance advantage such as good, connect fixed mounting at the gas cylinder, dismantle repeatedly, in the transportation process, metal composite gas port life is longer, fatigue life is very high, consequently, guarantee that whole gas cylinder has longer life, reduce damage and the fault rate of gas cylinder during the in service, aluminum alloy gas port screw thread has been solved, sealed face destroys and leads to the gas cylinder maintenance even condemned problem, has higher economic value and social value.
Description
Technical Field
The invention relates to the technical field of composite gas cylinders, in particular to a composite gas cylinder with a metal composite gas port and a manufacturing method thereof.
Background
The composite gas cylinder is made by adopting a fiber winding aluminum alloy inner container manufacturing technology, and the aluminum alloy has better processing performance, higher specific strength and better corrosion resistance, and the aluminum alloy has better compatibility with most media, so that the composite gas cylinder has very wide application fields, such as application to satellites, spacecrafts, space stations, carrier rockets and the like in the aerospace field; military, civil aircraft, etc. in the aviation field; missiles, ground weapons, weapon systems, the ship industry, etc. in the weapon field; and compressed natural gas, liquefied natural gas, hydrogen storage systems, etc. in the civil field.
The composite gas cylinder is filled with high-pressure gaseous medium, so that the improvement of the structural strength, durability, gas sealing performance, structural efficiency, reliability and safety of the composite gas cylinder is of great significance. The microstructure structure of the aluminum alloy is generally a face-centered cubic crystal structure, the material for the seamless spinning aluminum alloy liner generally has the characteristics of good plasticity, good toughness and high specific strength, but the tensile strength, the yield strength, the hardness, the elastic modulus and the abrasion resistance of the aluminum alloy are generally lower than those of stainless steel, high-strength steel, titanium alloy and other materials, so that the aluminum alloy gas port connecting screw thread and the gas port sealing surface are more easily deformed and abraded and other damages, the use performance of the gas cylinder is directly influenced, the gas port can be abraded in the processes of repeated disassembly and replacement of the gas cylinder gas port screw thread, the whole gas cylinder can be directly scrapped under the condition that the gas port screw thread cannot be repaired, the use is influenced, namely, the gas port structure is the weakest link of the use and the protection of the gas cylinder in the use process of the composite gas cylinder.
The gas port sealing mode of the composite gas cylinder generally does not adopt metal sealing, because the aluminum alloy material has low strength, low hardness, low elastic modulus and low plastic modulus, the adopted metal sealing can easily cause the deformation and the abrasion of a sealing surface, and once the sealing surface is damaged, the sealing performance is reduced, the gas cylinder leaks gas, and the gas cylinder is directly scrapped. The gas port of the present composite gas cylinder is generally sealed by a sealing ring, the sealing ring belongs to a non-metal material, the material performance and the quality of the sealing ring are unstable, the sealing of the sealing ring has the defects of poor air tightness and high leakage rate, the sealing ring also has a certain service life, the long-time storage requirement under pressure can not be met in the military industry field and the high-requirement civil field, after the storage for a certain time, the air pressure is reduced, the medium capacity is reduced, secondary filling is needed, the use requirement of the gas cylinder in the special field is seriously influenced, and the leaked medium also has unnecessary influence on a subsystem and the surrounding environment.
The pipeline of the satellite fluid management system is generally made of titanium alloy, the gas port of the gas cylinder needs to be welded with the titanium alloy pipeline, metal compounds are easily generated by welding the aluminum alloy and the titanium alloy, and a welding seam with qualified quality cannot be obtained by conventional argon arc welding and other heat fusion welding. Therefore, the titanium alloy inner container composite gas cylinder is generally adopted in the field of aerospace satellites at present, compared with an aluminum alloy inner container, the titanium alloy inner container is high in material cost, complex in process and high in production cost, the commercial aerospace market demands are met in the future, and the development of the aerospace field also needs a low-cost composite gas cylinder technology and a low-cost composite gas cylinder product. The field needs a low-cost composite gas cylinder with an aluminum alloy liner, which is suitable for being welded with a titanium alloy pipeline, so as to meet the requirements of low-cost and high-reliability commercial aerospace market.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that the aluminum alloy inner container composite gas cylinder in the prior art is difficult to weld with a titanium alloy pipeline and the cost of the titanium alloy inner container composite gas cylinder is high, thereby providing the composite gas cylinder with the metal composite gas port and the manufacturing method thereof.
In a first aspect, the present invention provides a composite gas cylinder with a metal composite gas port, comprising:
an aluminum alloy inner container;
the composite material layer is wound on the surface of the aluminum alloy inner container;
the metal composite gas port comprises an aluminum alloy connecting ring and a high-strength metal air faucet, wherein the aluminum alloy connecting ring is welded with a gas port connector of a bottle opening of an aluminum alloy inner container, the high-strength metal air faucet is connected with the aluminum alloy connecting ring to be away from one end of the aluminum alloy inner container in a welded mode, the high-strength metal air faucet is communicated with a cavity of the aluminum alloy inner container, and titanium alloy or stainless steel is selected for use as a material of the high-strength metal air faucet.
Further, the aluminum alloy connecting ring and the high-strength metal air tap are welded by adopting an explosive welding process.
Further, the aluminum alloy connecting ring is made of 6061 aluminum alloy, 5A06 aluminum alloy or 2219 aluminum alloy;
the aluminum alloy liner is made of 6061 aluminum alloy, 5086 aluminum alloy, 5A06 aluminum alloy, 2A12 aluminum alloy, 2A14 aluminum alloy, 2219 aluminum alloy or 2195 aluminum alloy.
Further, the shape of the aluminum alloy inner container is cylindrical, spherical, nearly spherical, ellipsoidal, annular, conical or special-shaped.
Further, the composite gas cylinder with the metal composite gas port further comprises: and the winding auxiliary part is arranged at one end of the aluminum alloy inner container, which is far away from the bottle mouth.
Further, the winding auxiliary part is bonded with the aluminum alloy inner container;
the winding auxiliary part is made of titanium alloy, aluminum alloy or stainless steel.
Further, the method for welding the aluminum alloy connecting ring and the gas port joint comprises the following steps: directly welding or screwing and then welding, wherein,
when in direct welding, the butt joint and lap joint or the connection mode of the clearance fit connection of the outer cylindrical surface and the conical surface is adopted for welding; when the screw is firstly screwed and then welded, the connecting thread structure can be a straight thread or a taper thread,
the welding mode is at least one of friction stir welding, electron beam welding, ion beam welding, laser welding and argon arc welding.
Further, the composite layer comprises: the pressure-bearing composite layer is wound on the surface of the aluminum alloy inner container;
and also includes or does not include: a protective composite layer wound on the surface of the pressure-bearing composite layer,
the fiber material of the pressure-bearing composite layer is at least one of T300 carbon fiber, T700 carbon fiber, T800 carbon fiber, T1000 carbon fiber, aramid fiber and glass fiber; the fiber material of the protective composite layer is at least one of aramid fiber and glass fiber.
Further, the aluminum alloy inner container comprises an air port connector, a bottle mouth end sealing head, a cylinder body and a sealing end sealing head which are sequentially connected.
Further, the shape of aluminum alloy inner bag is cylindrical, the bottleneck end head and sealed end head are equal tension head, ellipsoid head, hemisphere head, butterfly head, three-point circular head or balanced type head.
Furthermore, the aluminum alloy inner container is cylindrical and is manufactured by adopting an integral spinning process or by adopting an end socket and a cylinder body which are respectively spun and then welded.
In a second aspect, the invention provides a method for manufacturing the composite gas cylinder with the metal composite gas port, which comprises the following steps:
welding the aluminum alloy connecting ring and the high-strength metal air tap by adopting an explosive welding method, and processing to obtain a metal composite air port;
assembling and welding the aluminum alloy connecting ring part of the metal composite gas port with a gas port connector at the bottleneck of the aluminum alloy liner to communicate the high-strength metal gas nozzle with the cavity of the aluminum alloy liner to obtain the aluminum alloy liner with the metal composite gas port;
winding a composite material layer on the surface of the aluminum alloy liner by adopting a fiber wet winding process to obtain a semi-finished product of the composite gas cylinder;
putting the semi-finished product of the composite gas cylinder into a curing furnace for rotary curing;
and (5) shaping the cured composite gas cylinder by using an overpressure pre-tightening process.
Further, before the composite material layer is formed by adopting a fiber wet winding process, the method further comprises the following steps:
and one end of the aluminum alloy inner container, which is far away from the metal composite air port, is connected with a winding auxiliary piece.
The technical scheme of the invention has the following advantages:
the composite gas cylinder with the metal composite gas port comprises an aluminum alloy inner container, a composite material layer and the metal composite gas port, wherein the aluminum alloy inner container is used for winding a core mold with fibers and sealing a working medium; the composite material layer is wound outside the aluminum alloy liner and has the function of bearing the main high-strength internal pressure load; the metal composite gas port comprises an aluminum alloy connecting ring and a high-strength metal gas nozzle, the high-strength metal gas nozzle is connected with the aluminum alloy liner through the aluminum alloy connecting ring, and compared with the aluminum alloy gas port, the metal composite gas port has the advantages of high strength, high hardness, good abrasion resistance, good fatigue resistance and the like; in addition, the sealing ring of the original aluminum alloy gas port can be replaced by a metal sealing mode for sealing, so that the gas cylinder is better in gas tightness, stronger in anti-dynamic environment capacity, higher in safety and reliability, enhanced in gas sealing performance, lower in gas leakage rate and loss, particularly suitable for missile pressure containers in the specific military field and the like and hydrogen storage systems in the civil field and the like, long in high-pressure gas storage time and low in leakage rate of the gas cylinder are ensured, secondary inflation and pressurization are not needed in emergency use, and the problems of low sealing leakage rate and low aging life of the sealing ring of the conventional aluminum alloy gas cylinder are solved; when the high-strength metal air tap is made of titanium alloy, the aluminum alloy air bottle can be welded with a titanium alloy pipeline of a satellite fluid management system, and the application of the aluminum alloy air bottle in the satellite field is realized. Therefore, the composite gas cylinder with the metal composite gas port has the advantages of good manufacturability, fatigue resistance, abrasion resistance, long service life, simple structure, high strength, good gas tightness, high reliability and high safety, and can be applied to the military field of spaceflight, aviation, missile and the like, civil compressed natural gas, hydrogen storage systems and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a composite gas cylinder with a metal composite gas port provided by the invention.
Description of reference numerals:
1-an aluminum alloy inner container; 2-a composite layer; 3-aluminum alloy connecting rings; 4-high strength metal air tap; 5-winding auxiliary parts.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the present invention provides a composite gas cylinder with a metal composite gas port, comprising:
an aluminum alloy inner container 1;
the composite material layer 2 is wound on the surface of the aluminum alloy inner container 1;
the metal composite gas port comprises an aluminum alloy connecting ring 3 and a high-strength metal gas nozzle 4, wherein the aluminum alloy connecting ring 3 is welded with a gas port connector at a bottle opening of an aluminum alloy inner container 1, the high-strength metal gas nozzle 4 is welded with one end of the aluminum alloy connecting ring 3, which is far away from the aluminum alloy inner container 1, the high-strength metal gas nozzle 4 is communicated with a cavity of the aluminum alloy inner container 1, and the high-strength metal gas nozzle 4 is made of titanium alloy or stainless steel.
As an alternative embodiment of the present invention, the shape of the aluminum alloy liner 1 is cylindrical, spherical, nearly spherical, ellipsoidal, annular, conical or irregular. The aluminum alloy inner container 1 comprises an air port connector, a bottle mouth end socket, a cylinder body and a sealing end socket which are sequentially connected. The small cylindrical aluminum alloy liner can be manufactured by an integral spinning process, and the large cylindrical aluminum alloy lining shell can be manufactured by welding after spinning the end socket and the barrel respectively. When the shape of the aluminum alloy liner 1 is cylindrical, the bottle mouth end socket and the sealing end socket are equal-tension end sockets, ellipsoidal end sockets, hemispherical end sockets, butterfly end sockets, three-point circular end sockets or balance type end sockets. The aluminum alloy liner 1 is made of 6061 aluminum alloy, 5086 aluminum alloy, 5A06 aluminum alloy, 2A12 aluminum alloy, 2A14 aluminum alloy, 2219 aluminum alloy or 2195 aluminum alloy.
As an optional implementation mode of the invention, the aluminum alloy liner is obtained by aluminum alloy plate heat treatment, sealing end head stamping, cylinder body forced rotation, bottle mouth end head closing, air port spinning forming and air port joint processing forming.
As an alternative embodiment of the invention, the composite layer 2 comprises: a pressure-bearing composite layer wound on the surface of the aluminum alloy inner container 1; and also includes or does not include: the protective composite layer is wound on the surface of the pressure-bearing composite layer, wherein the fiber material of the pressure-bearing composite layer is at least one of T300 carbon fiber, T700 carbon fiber, T800 carbon fiber, T1000 carbon fiber, aramid fiber and glass fiber; the fiber material of the protective composite layer is at least one of aramid fiber and glass fiber.
As an optional implementation mode of the invention, the aluminum alloy liner is taken as a core mold, the composite material layer 2 is formed by adopting a fiber wet winding process, the composite material layer can be wound on the outer surface of the aluminum alloy liner 1 in an annular and spiral mode alternately, the winding line type needs to meet the structural strength requirement of the composite material layer, and the fiber tension control adopts a layer-by-layer decreasing process. In order to realize the winding and fixing of the fiber material, an epoxy resin material can be added.
The aluminum alloy inner container 1 is used for winding a core mould by fibers and sealing a working medium; the composite material layer 2 is wound outside the aluminum alloy liner 1, and the function of the composite material layer is to bear the main high-strength internal pressure load.
As an optional embodiment of the invention, the aluminum alloy connecting ring 3 and the high-strength metal air tap 4 are welded by adopting an explosive welding process. For example, the high-strength metal bar and the aluminum alloy ring material can be manufactured and formed first and then explosion welded, or the high-strength metal bar and the aluminum alloy ring material can be firstly explosion welded and then formed. The aluminum alloy connecting ring 3 is made of 6061 aluminum alloy, 5A06 aluminum alloy or 2219 aluminum alloy.
As an alternative embodiment of the invention, the method for welding the aluminum alloy connecting ring 3 and the gas port connector comprises the following steps: direct welding or first screw connection and then welding, wherein when the direct welding is carried out, butt joint, lap joint or connection mode of clearance fit connection of an outer cylindrical surface and a conical surface is adopted for welding; when the screw is firstly screwed and then welded, the connecting thread structure can be straight threads or conical threads, and the welding mode adopts at least one of friction stir welding, electron beam welding, ion beam welding, laser welding and argon arc welding. Compared with a simple butt welding seam, the interface structure which is firstly screwed and then welded has higher structural stability and reliability and a simple and reliable processing mode.
The high-strength metal air tap 4 is connected with the aluminum alloy liner 1 through the aluminum alloy connecting ring 3, so that an upper metal transition joint is connected to the aluminum alloy liner 1, and the aluminum alloy liner is conveniently welded with a titanium alloy pipeline.
As an alternative embodiment of the present invention, the present invention provides a composite gas cylinder with a metal composite gas port, further comprising: and the winding auxiliary part 5 is arranged at one end of the aluminum alloy inner container 1, which is far away from the bottle mouth. Optionally, the winding auxiliary member 5 is bonded with the aluminum alloy liner 1; the winding auxiliary 5 is made of titanium alloy, aluminum alloy or stainless steel. The winding auxiliary part is used for spirally winding and fixing the fibers of the gas cylinder.
The invention also provides a manufacturing method of the composite gas cylinder with the metal composite gas port, which comprises the following steps:
welding the aluminum alloy connecting ring 3 and the high-strength metal air tap 4 by adopting an explosive welding method, and processing to obtain a metal composite air port;
assembling and welding the aluminum alloy connecting ring 3 part of the metal composite air port with an air port connector at the bottle mouth of the aluminum alloy inner container 1, so that the high-strength metal air nozzle 4 is communicated with the cavity of the aluminum alloy inner container 1, and the aluminum alloy inner container 1 with the metal composite air port is obtained;
winding the surface of the aluminum alloy liner 1 to form a composite material layer 2 by adopting a fiber wet winding process to obtain a semi-finished product of the composite gas cylinder;
putting the semi-finished product of the composite gas cylinder into a curing furnace for rotary curing;
and (5) shaping the cured composite gas cylinder by using an overpressure pre-tightening process.
As an alternative embodiment of the present invention, before forming the composite material layer 2 by using the fiber wet winding process, the method further includes: and one end of the aluminum alloy inner container 1, which is far away from the metal composite air port, is connected with a winding auxiliary part 5.
As an alternative embodiment of the present invention, acceptance tests are performed after the manufacture of the composite gas cylinder is completed, including a proof pressure test, a helium mass spectrometer leak test, a thermal vacuum test, a thermal cycle test, a temperature shock test, a random vibration test, a sinusoidal vibration test, and the like.
As an alternative embodiment of the present invention, the cleaning, purification, packaging, boxing and storage of the composite gas cylinder are performed after the acceptance test of the composite gas cylinder is completed.
The following provides a specific embodiment of the composite gas cylinder with the metal composite gas port, which is provided by the invention:
a composite gas cylinder with a metal composite gas port comprises the following components:
an aluminum alloy inner container 1;
the composite material layer 2 is wound on the surface of the aluminum alloy inner container 1;
the metal composite gas port consists of an aluminum alloy connecting ring 3 and a high-strength metal gas nozzle 4, wherein the aluminum alloy connecting ring 3 is welded with a gas port joint at the bottle mouth of the aluminum alloy liner 1, the high-strength metal gas nozzle 4 is welded with one end of the aluminum alloy connecting ring 3, which is far away from the aluminum alloy liner 1, and the high-strength metal gas nozzle 4 is communicated with the cavity of the aluminum alloy liner 1;
winding auxiliary member 5 sets up in the one end of aluminium alloy inner bag 1 keeping away from the bottleneck, wherein:
the aluminum alloy liner 1 is cylindrical, the aluminum alloy liner 1 is composed of an air port connector, a bottle mouth end socket, a cylinder body and a sealing end socket which are sequentially connected from top to bottom, the bottle mouth end socket and the sealing end socket are all ellipsoidal sockets with an ellipsoidal ratio of 1.8, the cylinder body is of an equal-wall-thickness shell structure, the bottle mouth end socket and the sealing end socket are all gradually thickened shell structures, the inner diameter of the cylinder body is 278mm, the volume of the aluminum alloy liner is 30L, and the aluminum alloy liner 1 is made of 6061 aluminum alloy;
the composite material layer 2 is only formed by a pressure-bearing composite layer, and the pressure-bearing composite layer is made of T1000 carbon fibers and is fixed on the surface of the aluminum alloy liner 1 through an epoxy resin material;
the aluminum alloy connecting ring 3 is made of 6061 aluminum alloy, the high-strength metal air tap 4 is made of TA3 titanium alloy, and the aluminum alloy connecting ring and the high-strength metal air tap are connected by a pure aluminum transition layer during welding;
the aluminum alloy connecting ring 3 is screwed with the air port joint through M18 straight threads and then welded;
the material of the winding auxiliary member 5 adopts TC4 titanium alloy.
The manufacturing method of the composite gas cylinder with the metal composite gas port comprises the following steps:
(1) manufacturing an aluminum alloy inner container 1 by adopting a seamless spinning process;
(2) processing the aluminum alloy connecting ring 3 and the high-strength metal air tap 4 into a metal composite air port by adopting an explosive welding process;
(3) machining and molding the winding auxiliary part 5 by adopting a turning and milling process;
(4) the air port joint of the aluminum alloy inner container 1 is in threaded connection with the aluminum alloy connecting ring 3 of the metal composite air port, the assembly meets the welding requirement, and the aluminum alloy connecting ring is welded and connected through electron beam welding;
(5) bonding the winding auxiliary part 5 with the aluminum alloy liner 1;
(6) the carbon fiber is wound on the outer surface of the aluminum alloy inner container 1 in the annular direction and in the spiral direction alternately to form the composite material layer 2, the composite gas cylinder manufactured in the embodiment is applied to satellite subsystems, and a protective composite layer is not processed due to the adoption of better protective measures;
(7) and (4) completing an acceptance test: verifying a pressure test, a helium mass spectrum leakage detection test, a thermal vacuum test, a thermal cycle test, a temperature shock test, a random vibration test and a sine vibration test;
(8) cleaning, purifying, packaging, boxing and storing the composite gas cylinder.
Compared with an aluminum alloy gas port, the metal composite gas port of the composite gas cylinder with the metal composite gas port has the advantages of high strength, high hardness, good wear resistance, good fatigue resistance and the like, and in the processes of connecting, fixing and mounting, repeated dismounting, transferring and transporting the gas cylinder, the metal composite gas port has longer service life and very high fatigue life, so that the whole gas cylinder is ensured to have longer service life, the damage and failure rate of the gas cylinder in the service period are reduced, the problem of maintenance and even scrapping of the gas cylinder caused by the damage of the thread and the sealing surface of the aluminum alloy gas port is solved, and the composite gas cylinder with the metal composite gas port has higher economic value and social value; in addition, the sealing ring of the original aluminum alloy gas port can be replaced by a metal sealing mode for sealing, so that the gas cylinder is better in gas tightness, stronger in anti-dynamic environment capacity, higher in safety and reliability, enhanced in gas sealing performance, lower in gas leakage rate and loss, particularly suitable for missile pressure containers in the specific military field and the like and hydrogen storage systems in the civil field and the like, long in high-pressure gas storage time and low in leakage rate of the gas cylinder are ensured, secondary inflation and pressurization are not needed in emergency use, and the problems of low sealing leakage rate and low aging life of the sealing ring of the conventional aluminum alloy gas cylinder are solved; when the high-strength metal air tap is made of titanium alloy, the aluminum alloy air bottle can be welded with a titanium alloy pipeline of a satellite fluid management system, and the application of the aluminum alloy air bottle in the satellite field is realized. Therefore, the composite gas cylinder with the metal composite gas port has the advantages of good manufacturability, fatigue resistance, abrasion resistance, long service life, simple structure, high strength, good gas tightness, high reliability and high safety, and can be applied to the military field of spaceflight, aviation, missile and the like, civil compressed natural gas, hydrogen storage systems and the like.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The utility model provides a compound gas cylinder with metal compound gas port which characterized in that includes:
an aluminum alloy inner container;
the composite material layer is wound on the surface of the aluminum alloy inner container;
the metal composite gas port comprises an aluminum alloy connecting ring and a high-strength metal air faucet, wherein the aluminum alloy connecting ring is welded with a gas port connector of a bottle opening of an aluminum alloy inner container, the high-strength metal air faucet is connected with the aluminum alloy connecting ring to be away from one end of the aluminum alloy inner container in a welded mode, the high-strength metal air faucet is communicated with a cavity of the aluminum alloy inner container, and titanium alloy or stainless steel is selected for use as a material of the high-strength metal air faucet.
2. A composite gas cylinder with a metal composite gas port according to claim 1, characterized in that the aluminum alloy connecting ring and the high-strength metal gas nipple are welded by explosion welding process.
3. A composite gas cylinder with a metal composite gas port according to claim 1,
the aluminum alloy connecting ring is made of 6061 aluminum alloy, 5A06 aluminum alloy or 2219 aluminum alloy;
the aluminum alloy liner is made of 6061 aluminum alloy, 5086 aluminum alloy, 5A06 aluminum alloy, 2A12 aluminum alloy, 2A14 aluminum alloy, 2219 aluminum alloy or 2195 aluminum alloy.
4. A composite gas cylinder with a metal composite gas port according to claim 1, further comprising: and the winding auxiliary part is arranged at one end of the aluminum alloy inner container, which is far away from the bottle mouth.
5. A composite gas cylinder with a metal composite gas port according to claim 4,
the winding auxiliary part is bonded with the aluminum alloy inner container;
the winding auxiliary part is made of titanium alloy, aluminum alloy or stainless steel.
6. A composite gas cylinder with a metal composite gas port according to claim 1,
the method for welding the aluminum alloy connecting ring and the gas port joint comprises the following steps: directly welding or screwing and then welding, wherein,
when in direct welding, the butt joint and lap joint or the connection mode of the clearance fit connection of the outer cylindrical surface and the conical surface is adopted for welding; when the screw is firstly screwed and then welded, the connecting thread structure can be a straight thread or a taper thread,
the welding mode is at least one of friction stir welding, electron beam welding, ion beam welding, laser welding and argon arc welding.
7. A composite gas cylinder with a metal composite gas port according to claim 1,
the composite layer includes: the pressure-bearing composite layer is wound on the surface of the aluminum alloy inner container;
and also includes or does not include: a protective composite layer wound on the surface of the pressure-bearing composite layer,
the fiber material of the pressure-bearing composite layer is at least one of T300 carbon fiber, T700 carbon fiber, T800 carbon fiber, T1000 carbon fiber, aramid fiber and glass fiber; the fiber material of the protective composite layer is at least one of aramid fiber and glass fiber.
8. A composite gas cylinder with a metal composite gas port as claimed in claim 1, wherein the aluminum alloy inner container comprises a gas port connector, a cylinder end socket, a cylinder body and a sealing end socket which are connected in sequence.
9. A method for manufacturing a composite gas cylinder with a metal composite gas port according to any one of claims 1 to 8, comprising:
welding the aluminum alloy connecting ring and the high-strength metal air tap by adopting an explosive welding method, and processing to obtain a metal composite air port;
assembling and welding the aluminum alloy connecting ring part of the metal composite gas port with a gas port connector at the bottleneck of the aluminum alloy liner to communicate the high-strength metal gas nozzle with the cavity of the aluminum alloy liner to obtain the aluminum alloy liner with the metal composite gas port;
winding a composite material layer on the surface of the aluminum alloy liner by adopting a fiber wet winding process to obtain a semi-finished product of the composite gas cylinder;
putting the semi-finished product of the composite gas cylinder into a curing furnace for rotary curing;
and (5) shaping the cured composite gas cylinder by using an overpressure pre-tightening process.
10. A method of manufacturing a composite gas cylinder with a metal composite gas port as claimed in claim 9, further comprising, before forming the composite material layer by a wet fiber winding process:
and one end of the aluminum alloy inner container, which is far away from the metal composite air port, is connected with a winding auxiliary piece.
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