CN112797307A - Composite material inner container and manufacturing method thereof - Google Patents
Composite material inner container and manufacturing method thereof Download PDFInfo
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- CN112797307A CN112797307A CN202011613999.9A CN202011613999A CN112797307A CN 112797307 A CN112797307 A CN 112797307A CN 202011613999 A CN202011613999 A CN 202011613999A CN 112797307 A CN112797307 A CN 112797307A
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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
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
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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
- F17C2201/0119—Shape cylindrical with flat 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
- F17C2203/01—Reinforcing or suspension means
- F17C2203/011—Reinforcing 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
- 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
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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
- F17C2209/22—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
- F17C2209/225—Spraying
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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
- F17C2209/227—Assembling processes by adhesive 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a composite material liner and a manufacturing method thereof, wherein the composite material liner comprises a boss and a liner body, wherein the liner body mainly comprises an anti-cracking structure layer, an anti-seepage plastic film layer and a boss fixing structure, wherein the anti-cracking structure layer is formed by weaving a carbon fiber composite material; the anti-leakage plastic film layer and the boss fixing structure form a first anti-leakage layer through welding or bonding; the anti-cracking structure layer is paved on the outer side of the first anti-leakage layer; the boss fixing structure is provided with an edge part; the boss fixing structure is connected with the anti-leakage plastic film layer through the edge part; the invention improves the performance of the liner by the weaving mode design of the composite woven cloth and the optimization of the filling material, and the composite material layer can share the load requirement of the structural layer part in the working stage of the gas cylinder, shares the leakage prevention function of the original liner part, improves the failure mode and improves the safety of the gas cylinder.
Description
Technical Field
The invention relates to the technical field of inner containers, in particular to a composite material inner container and a manufacturing method thereof.
Background
The existing hydrogen storage bottles in China are mainly 35Mpa three-type bottles. The metal hydrogen embrittlement effect is more obvious along with the increase of hydrogen storage pressure, and the upgrading space is limited by directly using the prior three-type bottle technical route. The 70Mpa four-type bottle wound by the plastic inner container has the characteristics of corrosion resistance, light weight and high strength, and has a good development prospect.
The conventional composite material wound pressure vessel with an inner container, on which the outer layer of composite material is usually designed to prevent structural damage due to bottle body rupture, and the inner container is designed to contain the enclosed fluid, but in practice the inner container also takes on the role of winding shaft during the production of the wound layer of bottle body, so that certain strength must be maintained, and there is a bottleneck in reducing weight of the plastic inner container in this technical route. Liners in pressure vessels are not efficient in bearing the internal pressure load of the pressure vessel, which makes the liner a burden that is prone to weight gain.
In order to solve the above-mentioned problems, and to minimize the weight of the composite pressure vessel, it is desirable to improve the mass loading efficiency of the inner bladder while maintaining its leakage prevention function. Therefore, the invention provides an inner container structure of a composite material gas cylinder and a production method thereof, wherein the inner container structure comprises the following steps: the metal or all-plastic liner is used for replacing the existing filament winding composite material hydrogen storage bottle.
Disclosure of Invention
The invention aims to provide a composite material liner structure and a manufacturing method thereof, which increase the load requirement of a composite material layer in the liner winding process, the load capacity of unit mass of the composite material layer is far higher than that of plastic and metal materials, and the composite material layer can share the partial load requirement of a structural layer in the working stage of a gas cylinder and share the leakage prevention function of the original liner part.
The invention is realized by the following technical scheme:
a composite liner, includes boss and inner bag body, wherein: the inner container body mainly comprises an anti-cracking structure layer, an anti-seepage plastic film layer and a boss fixing structure, wherein the anti-cracking structure layer is formed by weaving carbon fiber composite materials; the anti-leakage plastic film layer and the boss fixing structure form a first anti-leakage layer through welding or bonding; the anti-cracking structure layer is paved on the outer side of the first anti-leakage layer.
Further, the boss fixing structure is provided with an edge part; the boss fixing structure is connected with the anti-leakage plastic film layer through the edge part.
Furthermore, a second leakage-proof load layer is formed on the surface of the first leakage-proof layer by laying carbon fiber cloth presoaked or infiltrated with anti-cracking resin; the crack-proof structure layer is mainly formed by solidifying warp and weft carbon fiber woven prepreg cloth or carbon fiber cloth soaked with crack-proof resin.
Further, the surface of the first leakage-proof layer forms a second leakage-proof load layer by spraying short carbon fiber and elastic resin composite materials.
Further, the boss fixing structure is formed in a dome shape by injection molding.
Further, the anti-leakage plastic film layer is cylindrical.
Further, the warp and weft carbon fiber woven prepreg comprises warp woven carbon fibers and weft woven carbon fibers; the warp-weft carbon fiber woven prepreg cloth is woven by plain weave or twill weave or spiral coiling between the warp-weft carbon fiber woven prepreg cloth.
Furthermore, the crack-resistant structural layer resin is made of a high-ductility material, and the crack-resistant structural layer carbon fiber should not be broken before breaking and failure.
Further, the manufacturing method of the composite material inner container comprises the following steps:
s1, fixing the two boss fixing structures on the coaxial bracket relatively;
s2, welding the cylindrical anti-leakage plastic film layer at the edge parts of the two boss fixing structures to form a first anti-leakage layer of the composite material liner;
s3, sealing and inflating the boss to ensure that the first leakage-proof layer is full;
s4, carrying out leakage check on the first leakage-proof layer;
s5, laying carbon fiber cloth presoaked or soaked with anti-cracking resin on the first anti-leakage surface to form a second anti-leakage load layer, wherein components for enhancing air tightness, strength, heat conductivity and fatigue resistance can be added into the anti-cracking resin;
and S6, curing to form the permanent composite material inner container.
Further, in the step S5, the second leakage-preventing loading layer may be formed by spraying an elastic resin of short carbon fibers.
The invention has the beneficial effects that:
1) the composite material layer is added to bear the load requirement required in the winding process of the liner, the load capacity per unit mass of the composite material layer is far higher than that of plastic and metal materials, and the composite material layer has higher mass load efficiency compared with the existing plastic liner and metal liner.
2) The inner container is divided by adopting different manufacturing processes through functions and structures of the inner container, so that the production is easier, the production efficiency is higher, the internal surface treatment is convenient, and the production of large-capacity containers is convenient.
3) Can improve the inner bag performance through the optimization of the weaving mode design of compound establishment cloth and filler, the combined material layer can share the partial load requirement of structural layer at gas cylinder working phase, shares original inner bag part simultaneously and prevents revealing the function, improves failure mode and improves gas cylinder security.
Drawings
FIG. 1 is a schematic view of the structure of the liner in the embodiment of the present invention;
FIG. 2 is an enlarged schematic view of section V of FIG. 1;
FIG. 3 shows a carbon fiber weave pattern of a carbon fiber composite material according to an embodiment of the present invention;
FIG. 4 is another carbon fiber weave pattern for a carbon fiber composite of an embodiment of the present invention;
FIG. 5 is another carbon fiber weave pattern for a carbon fiber composite of an embodiment of the present invention;
fig. 6 shows another carbon fiber weaving pattern of the carbon fiber composite material according to the embodiment of the invention.
Description of reference numerals: 1-boss; 2-boss fixing structure; 3-crack control line structure layer; 4-anti-leakage plastic film layer; 21-edge portion; 22-weld line.
Detailed Description
The invention will be described in detail with reference to the drawings and specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
It should be noted that all the directional indications (such as up, down, left, right, front, back, upper end, lower end, top, bottom … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
In the present invention, unless expressly stated or limited otherwise, the term "coupled" is to be interpreted broadly, e.g., "coupled" may be fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature; in addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 and 2, a composite material liner comprises a boss 1 and a liner body, wherein: the inner container body mainly comprises an anti-cracking structure layer 3, an anti-seepage plastic film layer 4 and a boss fixing structure 2, wherein the anti-cracking structure layer 3 is made of a woven carbon fiber composite material; the anti-leakage plastic film layer 4 and the boss fixing structure 2 form a first anti-leakage layer through welding or bonding; the crack-proof structural layer 3 is paved on the outer side of the first leakage-proof layer. The composite material layer is added to bear the load requirement required in the winding process of the liner, the load capacity per unit mass is far higher than that of plastic and metal materials, and the composite material liner has higher mass load efficiency compared with the existing plastic liner and metal liner; can improve the inner bag performance through the optimization of the weaving mode design of compound establishment cloth and filler, the combined material layer can share the partial load requirement of structural layer at gas cylinder working phase, shares original inner bag part simultaneously and prevents revealing the function, improves failure mode and improves gas cylinder security.
It should be noted that the anti-leakage plastic film layer 4 is connected with the boss fixing structures 2 at the two ends through welding or bonding at the middle cylindrical part of the composite material gas cylinder to form a first anti-leakage layer. A welding line 22 is formed when the anti-seepage plastic film layer 4 is welded with the boss fixing structure 2; the thickness of the inner anti-leakage plastic film layer 4 is mainly determined by the anti-leakage requirement. The inner surface of the leaky plastic film layer can be coated with a film to improve the heat transfer or air tightness. The outer surface of the seepage plastic film layer can be subjected to surface treatment to improve the adhesion performance of the resin of the anti-crack structural layer 3.
Specifically, in the present embodiment, the boss fixing structure 2 is provided with a rim 21; the boss fixing structure 2 is connected with the anti-leakage plastic film layer 4 through the edge part 21.
Specifically, in the embodiment, the second leakage-proof load layer is formed by laying carbon fiber cloth pre-impregnated or impregnated with anti-cracking resin on the surface of the first leakage-proof layer.
Specifically, in another embodiment, the surface of the first leakage-proof layer forms a second leakage-proof load layer by spraying short carbon fiber and elastic resin composite material.
Specifically, in the embodiment, the crack-resistant structure layer 3 is formed by mainly weaving pre-impregnated cloth with warp and weft carbon fibers or curing the carbon fiber cloth impregnated with crack-resistant resin. It should be noted that the composite material resin used in the crack-resistant structural layer 3 has good elasticity in the working environment range, and micro cracks should not be generated before the carbon fibers are subjected to stress fracture. The crack-resistant structure layer 3 has two functions: 1) providing support for the filament wound composite material structure layer in the winding stage, and 2) sharing the anti-leakage function of the original inner container in the inflation and deflation stage.
It should be noted that the anti-crack structure layer 3 may also be formed by spraying short carbon fiber elastic resin and then curing, and the anti-crack structure layer 3 should be able to bear the prestress of the pressure vessel winding structure layer filament winding without deformation.
Specifically, in this embodiment, the boss fixing structure 2 is formed in a dome shape by injection molding.
Specifically, in the embodiment, the anti-leakage plastic film layer 4 is cylindrical.
The boss fixing structure 2 is formed by injection molding and has a dome shape. The edge part 21 is welded with the cylindrical anti-leakage plastic film layer 4, so that the air tightness is ensured. The axial center of the dome is used for fixing the boss. The boss can be implanted during injection molding of the fixation structure or can be fixed after the dome is formed.
Specifically, in the scheme of this embodiment, the warp and weft carbon fiber woven prepreg includes warp-woven carbon fibers and weft-woven carbon fibers; the warp-weft carbon fiber woven prepreg cloth is woven by plain weave or twill weave or spiral coiling between the warp-weft carbon fiber woven prepreg cloth. Referring to fig. 3, the warp and weft carbon fiber woven prepreg is formed by interweaving warp woven carbon fibers and weft woven carbon fibers one above the other; referring to fig. 4, warp and weft carbon fiber woven prepreg cloth is formed by interweaving warp woven carbon fibers and weft woven carbon fibers in two-up and two-down modes; referring to fig. 5, the warp and weft carbon fiber woven prepreg is formed by interweaving warp woven carbon fibers and weft woven carbon fibers in three-over three-under.
It is noted that the woven material is effectively utilized in embodiments of the present invention due to its high efficiency in distributing loads, mitigating microcracking, void generation and propagation of manufacturing-induced defects, and providing a ductile, failure-resistant barrier layer. The carbon fibers in the woven structure are continuous and mechanically locked, thereby providing a natural mechanism by which loads can be distributed throughout the structure. This effective load distribution also makes the braided structure very impact resistant. Since all the carbon fibers in the woven structure are loaded, the woven material will absorb a large amount of energy when broken. This braided structure is thus also effective in preventing fatigue failure. Like filament wound structures, braided carbon fibers are helically wound, but they also have the additional function of mechanical interlocking. When the overall structure is subjected to high fatigue cycles, cracks will propagate through the matrix of filament wound or unidirectional woven material laminations. However, when cracks occur in the woven structure, the propagation of the cracks may be prevented at the intersections of the reinforcing carbon fibers. Furthermore, when the woven material is nested with other woven materials to produce a woven composite, there is virtually no delamination when subjected to fatigue loads. Because the composite woven layers move relative to each other, cracks are less likely to form and propagate between the woven reinforcement layers. The construction of the woven material provides a natural compliance so that the carbon fibers do not have to be cut, stitched or otherwise manipulated when placed.
Specifically, in the embodiment, the crack-resistant structural layer resin is made of a high-ductility material, and the crack-resistant structural layer carbon fibers should not be broken before breaking and failing.
Specifically, in the embodiment, a method for manufacturing a composite material liner includes the following steps:
s1, fixing the two boss fixing structures 2 on a coaxial bracket relatively;
s2, welding the cylindrical anti-leakage plastic film layer 4 on the edge parts 21 of the two boss fixing structures 2 to form a first anti-leakage layer of the composite material liner;
s3, sealing and inflating the boss to ensure that the first leakage-proof layer is full;
s4, carrying out leakage check on the first leakage-proof layer;
s5, laying carbon fiber cloth presoaked or soaked with anti-cracking resin on the first anti-leakage surface to form a second anti-leakage load layer, wherein components for enhancing air tightness, strength, heat conductivity and fatigue resistance can be added into the anti-cracking resin;
and S6, curing to form the permanent composite material inner container.
Specifically, in this embodiment, in step S5, the second leakage-preventing load-supporting layer may be formed by spraying an elastic resin containing short carbon fibers.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the embodiments are only used to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the present description should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a composite material inner bag, includes boss and inner bag body, its characterized in that: the inner container body mainly comprises an anti-cracking structure layer, an anti-seepage plastic film layer and a boss fixing structure, wherein the anti-cracking structure layer is formed by weaving carbon fiber composite materials; the anti-leakage plastic film layer and the boss fixing structure form a first anti-leakage layer through welding or bonding; the anti-cracking structure layer is paved on the outer side of the first anti-leakage layer.
2. A composite liner as claimed in claim 1, wherein: the boss fixing structure is provided with an edge part; the boss fixing structure is connected with the anti-leakage plastic film layer through the edge part.
3. A composite liner as claimed in claim 1, wherein: the surface of the first leakage-proof layer forms a second leakage-proof load layer by laying carbon fiber cloth presoaked or infiltrated with anti-cracking resin; the crack-proof structure layer is mainly formed by solidifying warp and weft carbon fiber woven prepreg cloth or carbon fiber cloth soaked with crack-proof resin.
4. A composite liner as claimed in claim 1, wherein: the surface of the first leakage-proof layer forms a second leakage-proof load layer by spraying short carbon fiber and elastic resin composite materials.
5. A composite liner as claimed in claim 1, wherein: the boss fixing structure is formed into a dome shape through injection molding.
6. A composite liner as claimed in claim 1, wherein: the anti-leakage plastic film layer is cylindrical.
7. A composite liner as claimed in claim 3, wherein: the warp and weft carbon fiber woven prepreg cloth comprises warp woven carbon fibers and weft woven carbon fibers; the warp-weft carbon fiber woven prepreg cloth is woven by plain weave or twill weave or spiral coiling between the warp-weft carbon fiber woven prepreg cloth.
8. A composite liner as claimed in claim 1, wherein: the crack-resistant structural layer resin is made of a high-ductility material, and the crack-resistant structural layer carbon fiber is not required to be broken before breaking and failure.
9. The manufacturing method of the composite material inner container is characterized by comprising the following steps:
s1, fixing the two boss fixing structures on the coaxial bracket relatively;
s2, welding the cylindrical anti-leakage plastic film layer at the edge parts of the two boss fixing structures to form a first anti-leakage layer of the composite material liner;
s3, sealing and inflating the boss to ensure that the first leakage-proof layer is full;
s4, carrying out leakage check on the first leakage-proof layer;
s5, laying carbon fiber cloth presoaked or soaked with anti-cracking resin on the first anti-leakage surface to form a second anti-leakage load layer, wherein components for enhancing air tightness, strength, heat conductivity and fatigue resistance can be added into the anti-cracking resin;
and S6, curing to form the permanent composite material inner container.
10. The method for manufacturing a composite liner according to claim 9, wherein: in the step S5, the second leakage-preventing loading layer may be formed by spraying an elastic resin of short carbon fibers.
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| CN112797307B CN112797307B (en) | 2022-07-12 |
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| JP2002104297A (en) * | 2000-10-02 | 2002-04-10 | Fuji Heavy Ind Ltd | Fuel tank |
| TW200404977A (en) * | 2003-12-05 | 2004-04-01 | Chung Shan Inst Of Science | Method for producing composite material bottle and its structure |
| JP2010276193A (en) * | 2009-06-01 | 2010-12-09 | Hokuriku Str Cooperative | Method for manufacturing frp pressure vessel |
| EP2492576A1 (en) * | 2011-02-25 | 2012-08-29 | Peter Verwanger | Double membrane gas storage with an interior and an exterior membrane |
| CN105729842A (en) * | 2016-03-25 | 2016-07-06 | 哈尔滨理工大学 | Forming process and device for composite LPG gas cylinder |
| CN108692180A (en) * | 2017-03-31 | 2018-10-23 | 联合工艺公司 | Compressed gas closed article with barrier coat |
| CN107642678A (en) * | 2017-09-27 | 2018-01-30 | 山东中恒景新碳纤维科技发展有限公司 | A kind of 3 D weaving pressure cylinder and preparation method thereof |
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