CN1084862C - Full compound material gas cylinder for vehicle use compressed natural gas and manufacturing method thereof - Google Patents
Full compound material gas cylinder for vehicle use compressed natural gas and manufacturing method thereof Download PDFInfo
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- CN1084862C CN1084862C CN97103911A CN97103911A CN1084862C CN 1084862 C CN1084862 C CN 1084862C CN 97103911 A CN97103911 A CN 97103911A CN 97103911 A CN97103911 A CN 97103911A CN 1084862 C CN1084862 C CN 1084862C
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Abstract
The present invention relates to a full composite material gas bottle for compressed natural gas for automobiles, which comprises a plastic inner liner, a composite material structural layer, a protective layer and metallic nozzle connecting flanges, wherein the composite material structural layer is wound outside the plastic inner liner; the outer surface of the composite material structural layer is wrapped by the protective layer; the metallic nozzle connecting flanges are respectively connected with gas outlets of sealing heads at both ends of the plastic inner liner. The method for manufacturing the gas bottle comprises the sequential steps of processing of metallic flanges, rolling of the plastic inner liner, dipping of continuous fiber in moderate temperature solidified epoxy resin glue, wet winding of the composite material structural layer, wrapping of the protective layer of the outer surface of a moderate temperature solidified and shaped composite material. The present invention has the advantages of light weight (about 35kg), durability, good gas tightness, high static strength and fatigue strength, simple manufacturing technology, high productive efficiency and low cost.
Description
The present invention relates to a kind of compressed natural gas used as vehicle fuel gas cylinder and manufacture method thereof, particularly a kind of full composite wood compressed natural gas used as vehicle fuel gas cylinder is a kind of with the be used as power automobile accessories product of fuel of rock gas.At present, domestic this type of gas cylinder only limits to steel gas cylinder, it is that base growth is come with the oxygen cylinder, its material is a steel, big (50 liters of the volumes of sole mass, about 65Kg), and geomery big (φ 229 * 1500), be unfavorable for installing and using on the multiple vehicle development and use with natural gas energy resource.The kind of external this type of gas cylinder has the steel gas cylinder of steel, hoop wound composite.The steel cylinder of steel cylinder, hoop wound composite self is great, use is on large vehicle,, loading anharmonic ratio heavy with its car body, gas cylinder is heavy insignificant, but use on dilly, particularly sedan car, taxi, the heavy distribution that will influence body gravity of gas cylinder, and with loading heavy phase ratio, it is heavy that gas cylinder weight has just occupied certain loading, reduce the deadweight of gas cylinder, it is smaller that gas cylinder must be made, and correspondingly, gas cylinder volume reduces, the gas cylinder aeration quantity reduces, and the distance that car travels will reduce.
The object of the present invention is to provide a kind of lightweight, durable and lower-cost full composite material gas cylinder.
Another object of the present invention is to provide a kind of manufacture method of above-mentioned gas cylinder.
The object of the present invention is achieved like this: a kind of full compound material gas cylinder for vehicle use compressed natural gas; comprise the plastics inner bag; be wrapped in the outer composite structural laminate of plastics inner bag; be coated on the fire prevention that has of composite structural laminate outer surface; moistureproof; acid-proof; alkali; salt; the protective layer of antistatic and the metal that is connected on end socket air outlet, plastics inner bag two ends respectively connect the mouth flange; its characteristics are: above-mentioned metal mouth flange all has through hole; the central axes of its through hole central axis and plastics inner bag, and end socket air outlet, above-mentioned plastics inner bag two ends place connects with above-mentioned metal that the mouth flange directly is embedded in or by being threaded togather.
The manufacture method of above-mentioned gas cylinder comprises the following steps:
(1) Design and Machining of metal flange;
(2) rolling of plastics inner bag;
(3) continuous fiber soaks the epoxy resin glue of intermediate temperature setting, wet method wound composite construction layer;
(4) intermediate temperature setting of composite structural laminate;
(5) system of covering of gas cylinder external protection.
After the rolling of plastics inner bag, at liner end enclosure outer surface or inner bag outer surface Pasting rubber layer.
The present invention is described in more detail below in conjunction with drawings and Examples.
Fig. 1 is an overall structure sectional view of the present invention;
Fig. 2 inlays the partial sectional view that is connected for plastics inner bag of the present invention connects the mouth flange with metal;
The inner bag partial sectional view that Fig. 3 joins by screw thread and metal flange for plastics inner bag of the present invention;
The partial sectional view that Fig. 4 joins by screw thread and metal flange for plastics inner bag of the present invention.
Referring to accompanying drawing 1; present embodiment comprises plastics inner bag 3, be wrapped in the outer composite structural laminate 4 of plastics inner bag, be coated on the gas cylinder protective layer 5 of composite structural laminate 4 outer surfaces, be connected on the metal that place, end socket air outlet, plastics inner bag two ends all has a through hole respectively connects mouth flange 1, and metal connects the central axes of the through hole central axis and the plastics inner bag 3 of mouth flange 1.
In order to slow down the shearing stress between plastics inner bag 3 and composite structural laminate 4 interfaces, prevent to frustrate, improve the fatigue life of cylinder liner, plastics inner bag 3 is before twining outer layer of composite material construction layer 4, paste the higher rubber layer 2 of one deck shear modulus in its gamut or in its end socket subrange, thickness is between the 0.5-2mm.
Gas cylinder outer surface protective layer 5 can adopt two kinds of forms: a kind ofly be the coating of polyamine resin system, and another kind of for twining the composite layer of one deck carbon fiber.These two kinds of materials can both be prevented fires, protection against the tide, and acid-proof, alkali, salt, antistatic guarantees the safe handling of gas cylinder under the condition of various proper functioning.
When plastics inner bag 3 adopted the moulding of rotational moulding method, its end socket profile can be standard spheroid face, three-core garden profile, isostension end socket profile or ball-type face.Easily manufactured and utilize composite structural laminate 4 Wrapping formed convenience for the mould of inner bag 3 rotationally moldings, present embodiment adopts the standard spheroid end socket.
Referring to accompanying drawing 2,3,4, metal connects the dual mode that is connected with of mouth flange 1 and plastics inner bag 3: a kind of is in plastics inner bag 3 forming processes, and metal is connect on the end socket that mouth flange 1 directly is embedded in inner bag 3, as shown in Figure 2.Another kind of mode is when rotational moulding inner bag 3, on the end socket of two ends, precasts the screw column of evagination, as shown in Figure 3, again the metal that processes is connect mouth flange 1 by being threaded togather, as shown in Figure 4.The connection of above dual mode has guaranteed the tightness and the soundness that is connected of plastics inner bag 3.
Because the Young's modulus of metal and plastics differs bigger, two kinds of material junction stiffness are discontinuous, therefore, when the design metal connects mouth flange 1, consideration inner bag 3 is pressed the stress distribution of rear head in being subjected to, mild transition of proof stress and finished product gas cylinder are being subjected under the inner high voltage, and metal connects mouth flange 1 and is not extruded, so metal connects the shoulder breadth of mouth flange 1 than designing between 1.5-2mm.The shoulder outer mold surface that metal connects mouth flange 1 is consistent with end socket outer mold surface curvilinear equation, and profile is the thickness attenuate gradually from the neck root to the shoulder breadth edge in it.
For fatigue life of guaranteeing gas cylinder greater than 10000 times, the present invention has adopted the Intensity Design based on netting theory in the design of composite structural laminate 4, finite element stress analysis and analysis of fatigue are the comprehensive designing method of assisting.Satisfying on the basis of static strength, carry out the stress analysis of finite element, each point stress branch and size under the evaluation work pressure, the stress during again with material failure is compared, and ratio is taken as δ, is defined as stress axis.Size and fatigue curve according to stress ratio are found fatigue life, if the less than 10000 times fatigue life at which position by increasing the composite material stiffness at this position, reduces distortion so, reduce stress, improve fatigue life.
When making gas cylinder, at first the processing metal flange 1, and material is 45 steel, quenching with Subsequent tempering; Utilize rotational molding technique rolling plastics inner bag 3 again, its thickness is 1-7mm, in the rolling process, metal flange 1 directly is embedded in 3 liang of end socket ends of inner bag, or go out the column screw thread in two end socket end rollings, the metal flange 1 that processes is linked together by section's convex thread; Paste rubber layer at outer surface or whole inner bag 3 outer surfaces then, its thickness is 0.5-2mm; Afterwards continuous fiber (glass, aramid fiber, carbon fiber or mixed fibre) is immersed in middle temperature (60 °～90 °) curing epoxy resin adhesive wet method wound composite construction layer; With temperature (60 °～90 °) solidifying in the composite structural laminate, outside gas cylinder, twine the composite material protective layer of one deck carbon fiber again, or coat the protective layer of polyamine resin system.
The present invention compared with prior art has following advantage:
1. adopt low-density, high performance nonmetallic materials-plastics as inner bag, with low-density, high-performance Composite make structure sheaf, gas cylinder is coated with the full composite material gas cylinder of protective layer, so gas cylinder itself Quality light (heavily about 35Kg), durable and the inner bag manufacturing process is simple, one-shot forming has reduced production cost.
2. the present invention has adopted epoxy resin, intermediate temperature setting prescription, wet winding technology technology in manufacturing. Properties of Epoxy Resin is good, low price; Intermediate temperature setting, energy savings; Wet Winding Process twines with dry method to be compared, Reduced by a procedure, improved production efficiency, reduced production cost.
3. good and static strength and fatigue strength height of air-tightness of the present invention. When carrying out the hydraulic pressure fatigue test, After times of fatigue 10000, air-tightness is intact, and inspection is depressed into 85% of design burst pressure, pressurize 5 minutes, Do not have unusual.
Claims (6)
1; a kind of full compound material gas cylinder for vehicle use compressed natural gas; comprise the plastics inner bag; be wrapped in the outer composite structural laminate of plastics inner bag; be coated on the fire prevention that has of composite structural laminate outer surface; moistureproof; acid-proof; alkali; salt; the protective layer of antistatic and the metal that is connected on end socket air outlet, plastics inner bag two ends respectively connect the mouth flange; it is characterized in that: above-mentioned metal mouth flange all has through hole; the central axes of its through hole central axis and plastics inner bag, and end socket air outlet, above-mentioned plastics inner bag two ends place connects with above-mentioned metal that the mouth flange directly is embedded in or by being threaded togather.
2, full composite material gas cylinder according to claim 1 is characterized in that: the composite layer of the coating that above-mentioned gas cylinder outer surface protective layer is one deck polyamine resin system or winding one deck carbon fiber.
3, full composite material gas cylinder according to claim 1 is characterized in that: above-mentioned plastics liner end enclosure profile is standard spheroid profile or three-core garden profile or isostension profile or ball-type face.
4, full composite material gas cylinder according to claim 1 is characterized in that: the wall thickness of above-mentioned plastics inner bag is 1-7mm.
5, full composite material gas cylinder according to claim 1, it is characterized in that: above-mentioned metal connects the shoulder breadth of mouth flange than between 1.5-2mm, its outer mold surface is consistent with plastics liner end enclosure outer mold surface curvilinear equation, and profile is the thickness attenuate gradually from the neck root to the shoulder breadth edge in it.
6, a kind of method of making the described full composite material gas cylinder of claim 1 is characterized in that: comprise the following steps:
(1) Design and Machining of metal flange;
(2) rolling of plastics inner bag;
(3) in the rolling process, metal flange directly is embedded in inner bag two end socket ends, or goes out the column screw thread in two end socket end rollings, the metal flange that processes is linked together by convex thread;
(4) continuous fiber soaks the epoxy resin glue of intermediate temperature setting, wet method wound composite construction layer;
(5) intermediate temperature setting of composite structural laminate;
(6) system of covering of gas cylinder external protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97103911A CN1084862C (en) | 1997-04-15 | 1997-04-15 | Full compound material gas cylinder for vehicle use compressed natural gas and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97103911A CN1084862C (en) | 1997-04-15 | 1997-04-15 | Full compound material gas cylinder for vehicle use compressed natural gas and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1196462A CN1196462A (en) | 1998-10-21 |
| CN1084862C true CN1084862C (en) | 2002-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97103911A Expired - Fee Related CN1084862C (en) | 1997-04-15 | 1997-04-15 | Full compound material gas cylinder for vehicle use compressed natural gas and manufacturing method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN1084862C (en) |
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| JP4457359B2 (en) * | 2006-12-13 | 2010-04-28 | トヨタ自動車株式会社 | Pressure vessel |
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| CN102182910A (en) * | 2011-04-07 | 2011-09-14 | 杭州余杭獐山钢瓶有限公司 | Gas cylinder with fully-wound plastic liner and molding technology thereof |
| CN104421606A (en) * | 2013-08-23 | 2015-03-18 | 刘建华 | Glass reinforced plastic fuel gas storage tank |
| CN103994319B (en) * | 2013-11-19 | 2016-03-02 | 上海复合材料科技有限公司 | Thin-wall metal liner fiber is wound around winding and the solidification method of lightweight gas cylinder entirely |
| CN105643961A (en) * | 2016-01-08 | 2016-06-08 | 武汉理工大学 | External pressure resistance composite material cylinder body and metal end socket co-curing connecting structure and manufacturing method thereof |
| CN106863863A (en) * | 2017-02-17 | 2017-06-20 | 安徽绿动能源有限公司 | A kind of fiber winds the manufacture method of plastic inner container composite cylinder entirely |
| CN107339599A (en) * | 2017-08-11 | 2017-11-10 | 天津安易达复合气瓶有限公司 | A kind of nonmetallic inner bag winds composite cylinder and its manufacture method entirely |
| CN107461600A (en) * | 2017-09-30 | 2017-12-12 | 安徽绿动能源有限公司 | Overall plastic composite high pressure gas cylinder manufacture method |
| CN108656499B (en) * | 2018-04-24 | 2020-06-16 | 亚普汽车部件股份有限公司 | End socket structure of IV-type gas cylinder and lining forming method |
| CN109210365B (en) * | 2018-10-30 | 2020-12-29 | 亚普汽车部件股份有限公司 | Sealing structure of high-pressure composite container and high-pressure composite container |
| JP7135727B2 (en) * | 2018-10-30 | 2022-09-13 | トヨタ自動車株式会社 | high pressure tank |
| CN109469816B (en) * | 2018-12-25 | 2021-01-22 | 北华航天工业学院 | Composite material shell and preparation method thereof |
| CN111779965B (en) * | 2019-04-09 | 2022-03-25 | 石家庄安瑞科气体机械有限公司 | Composite gas cylinder and forming method thereof |
| CN112524472A (en) * | 2019-09-17 | 2021-03-19 | 彭志军 | Built-in ultrasonic auxiliary gas outlet hydrogen tank device |
| CN111174083B (en) * | 2019-12-27 | 2021-12-28 | 东南大学 | High-pressure composite gas cylinder |
| CN113566108A (en) * | 2020-04-28 | 2021-10-29 | 未势能源科技有限公司 | Valve seat of gas cylinder with fully-wound non-metal liner and gas cylinder with fully-wound non-metal liner |
| CN113958860A (en) * | 2020-07-05 | 2022-01-21 | 北京天海工业有限公司 | Plastic inner container of vehicular wound gas cylinder and processing method |
| CN111963890B (en) * | 2020-08-28 | 2022-07-15 | 亚普汽车部件股份有限公司 | High-pressure composite container |
| CN112303478B (en) * | 2020-10-30 | 2022-05-03 | 陕西碳能新材料有限责任公司 | Fireproof flame-retardant vehicle-mounted high-pressure hydrogen storage cylinder and manufacturing method thereof |
| CN115076600A (en) * | 2022-06-16 | 2022-09-20 | 江苏国富氢能技术装备股份有限公司 | Bottleneck structure of high-pressure hydrogen bottle plastic inner container |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031273A (en) * | 1987-07-21 | 1989-02-22 | 卡劳得·里昂·安伯特 | Fluid container and manufacture method thereof |
| CN2312400Y (en) * | 1997-04-15 | 1999-03-31 | 中国航天工业总公司第四研究院第四十三研究所 | Full composite material bottle for compressed natural gas for automobiles |
-
1997
- 1997-04-15 CN CN97103911A patent/CN1084862C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031273A (en) * | 1987-07-21 | 1989-02-22 | 卡劳得·里昂·安伯特 | Fluid container and manufacture method thereof |
| CN2312400Y (en) * | 1997-04-15 | 1999-03-31 | 中国航天工业总公司第四研究院第四十三研究所 | Full composite material bottle for compressed natural gas for automobiles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1196462A (en) | 1998-10-21 |
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