CN116447321A - End socket open-pore carbon fiber winding pressure vessel and forming method thereof - Google Patents
End socket open-pore carbon fiber winding pressure vessel and forming method thereof Download PDFInfo
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- CN116447321A CN116447321A CN202310452141.6A CN202310452141A CN116447321A CN 116447321 A CN116447321 A CN 116447321A CN 202310452141 A CN202310452141 A CN 202310452141A CN 116447321 A CN116447321 A CN 116447321A
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- 238000004804 winding Methods 0.000 title claims abstract description 59
- 239000011148 porous material Substances 0.000 title claims abstract description 34
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 32
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 32
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 87
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 20
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 238000012795 verification Methods 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 238000004880 explosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
- B29C70/683—Pretreatment of the preformed part, e.g. insert
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/78—Moulding material on one side only of the preformed part
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J12/00—Pressure vessels in general
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7154—Barrels, drums, tuns, vats
- B29L2031/7156—Pressure vessels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
Abstract
The invention provides a head open-pore carbon fiber winding pressure vessel and a forming method thereof, and belongs to the technical field of carbon fiber composite material forming. The problems of internal pressure strength and sealing of the carbon fiber wound pressure container after the container end socket is perforated are solved. The pressure vessel comprises a joint metal piece, a seal head opening metal piece, a lining repair layer, a lining layer and a fiber winding structure layer, wherein the joint metal piece comprises a metal joint and opening metal pieces, the metal joint and the opening metal pieces are arranged at the left end and the right end of the pressure vessel, the seal head opening metal pieces are arranged on one side of the metal joint of the pressure vessel, the lining repair layer is arranged on the outer side of a connecting part of the seal head opening metal pieces and the pressure vessel, the inner surface of the pressure vessel is the lining layer, and the outer surface of the pressure vessel is the fiber winding structure layer. It is mainly used for forming the carbon fiber winding pressure vessel.
Description
Technical Field
The invention belongs to the technical field of carbon fiber composite material forming, and particularly relates to a head open-pore carbon fiber winding pressure container and a forming method thereof.
Background
The carbon fiber is used as a novel structural material, and the strength of the novel structural material is 7-8 times that of a common steel material, and the novel structural material is called as the king of an emerging material. The carbon fiber winding composite material has the advantages of light weight, high strength, structural designability and the like, is widely applied to the industrial manufacturing fields of high-pressure containers, space solid engine shell manufacturing and the like, the fiber continuity of a carbon fiber structural layer is a key of strength assurance, the fiber continuity of the structural layer of the container head can be damaged when the fiber winding container head is opened, the explosion strength of the container is greatly reduced, meanwhile, the sealing property of an inner liner can be damaged, the opening of the container head is avoided when the head strength and the sealing property are not solved, and the wide application of the carbon fiber high-pressure container is severely limited.
Disclosure of Invention
In view of the above, the present invention is directed to a carbon fiber wound pressure vessel with an open end and a forming method thereof, so as to solve the problems of internal pressure strength and sealing of the carbon fiber wound pressure vessel after the open end of the vessel is opened.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a head trompil carbon fiber winding pressure vessel, includes connects metalwork, head trompil metalwork, inside lining repair layer, inner liner and fiber winding structure layer, connect the metalwork to include metal joint and trompil metalwork, metal joint and trompil metalwork set up both ends about pressure vessel, the head trompil metalwork sets up one side at pressure vessel's metal joint, the outside of head trompil metalwork and pressure vessel junction is equipped with the inside lining repair layer, and pressure vessel's internal surface is the inner liner, and pressure vessel's surface is fiber winding structure layer.
Furthermore, two ends of the upper side and the lower side of the pressure container are respectively provided with a small end connecting skirt and a large end connecting skirt.
Further, threads are arranged on the outer side of the opening of the end socket open-pore metal piece.
Furthermore, a rubber layer is arranged on the outer side of the end socket open-pore metal piece.
Further, a molding method of the carbon fiber winding pressure vessel with the open-pore end socket comprises the following steps:
step 1: a winding mandrel is designed and processed according to the inner surface of the pressure container, threads are processed on the metal piece with the opening of the sealing head, the center line of the threads is consistent with that of the opening, then a set screw is assembled, and the tail end of the set screw is flush with the surface of the mandrel;
step 2: coating sealing rubber layers on the inner surface and the outer surface of a flange of the joint metal piece;
step 3: assembling the coated joint metal piece to two ends of the core mold according to the positioning surface of the core shaft;
step 4: coating the surface of the whole core mold with two layers of rubber, and connecting the rubber with a metal joint of a pressure container through a reserved lap joint;
step 5: uniformly brushing interface glue on the surface of the coated rubber, removing the rubber at the tail end of the set screw, and screwing out until the rubber is flush with the surface of the rubber;
step 6: coating a fiber winding structure layer on the surface of the rubber, and screwing out a set screw before winding each longitudinal layer to be level with the outer surface of the fiber winding structure layer;
step 7: paving reinforcing sheets between the longitudinal winding layers;
step 8: after all longitudinal layers are wound and reinforcing sheets are paved, assembling a small end connecting skirt of a container and a large end connecting skirt of the container, and then winding an outer annular layer of the skirt and then feeding into a furnace for curing;
step 9: discharging the cured shell, and processing a round hole on the composite material end socket according to the axis of the end socket opening through numerical control processing equipment or a special tool;
step 10: removing the shell winding core mould;
step 11: a rubber layer is stuck or molded on the surface of the metal piece with the opening of the sealing head, sand is blown at the joint of the metal surface and the rubber layer, and an adhesive is coated between the rubber and the metal;
step 12: coating adhesive on the outer surface of the seal head open-pore metal after the rubber layer is adhered, fixing the seal head open-pore metal to the design position of the container seal head by using the fixture and the threads of the seal head open-pore metal, and dismantling the fixture after the adhesive is solidified;
step 13: sticking two layers of raw rubber sheets between a rubber layer on the surface of a metal piece and a rubber layer on the inner surface of a container on the surface of an open-pore metal piece of an inner end socket of the container;
step 14: paving a soft heating sheet on the surface of the adhered rubber green sheet;
step 15: assembling a container internal pressure test tool plug, and penetrating a heating plate control cable out of a test tool preformed hole;
step 16: introducing nitrogen into the container through the test tool, evacuating the original air, sealing the container, and pressurizing to 0.5-1.0MPa;
step 17: heating and vulcanizing by using a heating/temperature controlling device according to the vulcanization characteristics of the selected rubber, and then adhering two layers of rubber;
step 18: after the rubber is vulcanized, naturally cooling the interior of the container to below 40 ℃, removing the internal air pressure, and removing the redundancy such as the internal pressure test tool, the heating plate in the container and the like;
step 19: and (5) performing internal pressure and airtight test verification according to the design requirement of the container.
Further, in the step 2, the inner surface of the joint metal piece is coated with two layers of rubber with the thickness of 1mm, the inner surface and the outer surface are coated with two layers of rubber, the outer surface is coated with one layer of rubber, and a 20mm lap joint is reserved outside the maximum diameter of the flange.
Furthermore, in the step 4, the lap joint width of each layer of rubber in butt joint is not smaller than 10mm, and the lap joints of the two layers of rubber are staggered.
Further, in the step 6, the structural layer and the total thickness of the fiber winding structural layer are determined by using a composite material mechanics calculation method according to the use pressure and the safety coefficient.
Furthermore, in the step 7, the fastening screw is screwed out to be higher than the thickness of the reinforcing sheet on the surface of the winding layer before the reinforcing sheet is paved, the reinforcing sheet is laminated or wound and formed by carbon cloth and glass cloth, a through hole is reserved in the center, the reinforcing sheet is assembled and positioned with the through hole by the fastening screw, the thin glass cloth impregnated with winding resin is adhered on the surface of the reinforcing sheet after the reinforcing sheet is paved, and the number of the reinforcing sheet paving layers is determined according to the mechanical calculation result.
Further, the core mould in the step 1 adopts a metal skeleton gypsum core mould or a sand core mould structure.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention solves the problems of internal pressure strength and sealing of the carbon fiber wound pressure container after the container end socket is perforated.
2. The invention improves the continuity that the fiber wound on the container end socket can damage the fiber of the structural layer of the container end socket, and greatly improves the bursting strength of the container.
3. The invention can ensure the tightness of the inner liner and provides a repairing method of the inner liner after the opening.
4. The invention can ensure that the container with the diameter of more than 1200mm and one end with the opening of not less than 400mm has the strength and the sealing performance of not less than 10.0 MPa.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a front view of a head open-cell carbon fiber wound pressure vessel according to the present invention;
FIG. 2 is a side view of a head open-celled carbon fiber wrapped pressure vessel in accordance with the present invention;
FIG. 3 is a schematic view of a mandrel according to the present invention;
FIG. 4 is a schematic view of the installation of a set screw according to the present invention;
fig. 5 is a schematic view of a metal piece with openings in a sealing head according to the present invention.
The sealing device comprises a 1-metal joint, a 2-end socket perforated metal piece, a 3-lining repair layer, a 4-container small end connecting skirt, a 5-lining layer, a 6-fiber winding structure layer, a 7-container large end connecting skirt, an 8-perforated metal piece, a 9-set screw, a 10-thread and an 11-rubber layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, in the case of no conflict, embodiments of the present invention and features of the embodiments may be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.
The first embodiment is as follows: referring to fig. 1-5 for illustrating the present embodiment, a head open-pore carbon fiber winding pressure vessel includes a joint metal piece, a head open-pore metal piece 2, a lining repair layer 3, a lining layer 5 and a fiber winding structure layer 6, the joint metal piece includes a metal joint 1 and an open-pore metal piece 8, the metal joint 1 and the open-pore metal piece 8 are disposed at left and right ends of the pressure vessel, the head open-pore metal piece 2 is disposed at one side of the metal joint 1 of the pressure vessel, the lining repair layer 3 is disposed at the outer side of a connection part between the head open-pore metal piece 2 and the pressure vessel, the inner surface of the pressure vessel is the lining layer 5, the outer surface of the pressure vessel is the fiber winding structure layer 6, two ends of the upper and lower sides of the pressure vessel are respectively provided with a vessel small end connection skirt 4 and a vessel large end connection skirt 7, the outer side of an opening of the head open-pore metal piece 2 is provided with threads 10, and the outer side of the head open-pore metal piece 2 is provided with a rubber layer 11.
Firstly, a winding mandrel is designed and processed according to the inner profile of a pressure vessel, threads are processed on an end socket perforated metal piece 2, the thread center line is consistent with the center line of the perforation, then a set screw 9 is assembled, the tail end of the set screw 9 is parallel and level with the surface of the mandrel, the inner surface and the outer surface of the flange of a joint metal piece are coated with sealing rubber layers, the coated joint metal piece is assembled to the two ends of the mandrel according to the mandrel positioning surface, the whole surface of the mandrel is coated with two layers of rubber, the whole mandrel is connected with a metal joint 1 of the pressure vessel through a reserved lap joint, the coated rubber surface is uniformly coated with interface rubber, the rubber at the tail end of the set screw 9 is removed and screwed out to be parallel and level with the rubber surface, a fiber winding structure layer 6 is coated on the rubber surface, the set screw 9 is screwed out to be parallel and level with the outer surface of the fiber winding structure layer 6 before winding of each layer is wound, reinforcing sheets are paved between longitudinal winding layers, after all longitudinal layers are wound and reinforcing sheets are paved, a container small end connecting skirt 4 and a container large end connecting skirt 7 are assembled, then the outer annular layers of the wound skirt are subjected to furnace feeding and solidification, a shell is discharged after solidification, round holes are processed on a composite material end socket according to the end socket opening axis through numerical control processing equipment or special tools, a shell winding mandrel is removed, the surface of an end socket opening metal piece 2 is stuck or molded with a rubber layer 11, sand blowing is carried out on the bonding part of the metal surface and the rubber layer, an adhesive is coated between the rubber and the metal, the outer surface of the end socket opening metal piece 2 is coated with the adhesive after the rubber layer is stuck, the end socket opening metal piece 2 is fixed to a container end socket design position through the tools and threads 10 of the end socket opening metal piece 2, after the adhesive is solidified, the tools are disassembled, two layers of raw rubber sheets are stuck between the rubber layer on the surface of the end socket opening metal piece 2 and the rubber layer on the inner surface of the container, the method comprises the steps of paving soft heating sheets on the surface of a bonded rubber green sheet, assembling a container internal pressure test tool plug, penetrating a heating sheet control cable out of a test tool reserved hole, introducing nitrogen into the container through the test tool, evacuating original air, sealing the container, pressurizing to 0.5-1.0MPa, heating and vulcanizing by using a heating/temperature control device according to selected rubber vulcanization characteristics, bonding two layers of rubber, naturally cooling the inside of the container to below 40 ℃ after vulcanization, removing internal air pressure, removing excessive materials such as the internal pressure test tool and the heating sheets in the container, and performing internal pressure and airtight test verification according to the container design requirements, thereby solving the problems of internal pressure strength and sealing problems of a carbon fiber winding pressure container after the container is opened by the container head, improving the continuity of fiber winding container head structural layer fiber, greatly improving the explosion strength of the container, guaranteeing the sealing property of the inner liner 5, guaranteeing the inner liner 5 after opening, and guaranteeing that the container with the diameter of more than 1200mm, one end opening of not less than 400mm has the strength and sealing property of not less than 10.0 MPa.
The second embodiment is as follows: referring to fig. 1-5, the embodiment is described as a method for forming a pressure vessel wound with carbon fiber having an open end, comprising the steps of:
step 1: a winding mandrel is designed and processed according to the inner surface of the pressure container, threads are processed on the metal piece 2 with the opening of the sealing head, the center line of the threads is consistent with the center line of the opening, then a set screw 9 is assembled, the tail end of the set screw 9 is flush with the surface of the mandrel, and the mandrel adopts a metal skeleton gypsum mandrel or sand mandrel structure;
step 2: coating sealing rubber layers on the inner surface and the outer surface of a flange of a joint metal piece, coating 1mm rubber two layers on the inner surface and the outer surface of the joint metal piece, coating one layer of rubber on the outer surface, and reserving a 20mm lap joint outside the maximum diameter of the flange;
step 3: assembling the coated joint metal piece to two ends of the core mold according to the positioning surface of the core shaft;
step 4: coating the surface of the whole core mold with two layers of rubber, connecting the rubber with a metal joint 1 of a pressure container through a reserved lap joint, wherein the lap joint width of each layer of rubber in butt joint is not less than 10mm, and the lap joints of the two layers of rubber are staggered;
step 5: uniformly brushing interface glue on the surface of the coated rubber, removing the rubber at the tail end of the set screw 9, and screwing out until the rubber is flush with the surface of the rubber;
step 6: the fiber winding structure layer 6 on the surface of the rubber is coated, before each longitudinal layer is wound, the set screw 9 is screwed out to be flush with the outer surface of the fiber winding structure layer 6, wherein the structural layer and the total thickness of the fiber winding structure layer 6 are determined by using a composite material mechanics calculation method according to the use pressure and the safety coefficient;
step 7: paving reinforcing sheets between the longitudinal winding layers;
step 8: after all longitudinal layers are wound and reinforcing sheets are paved, assembling a container small end connecting skirt 4 and a container large end connecting skirt 7, then winding an outer circumferential layer of the skirt, and then feeding into a furnace for solidification, wherein a set screw 9 is screwed out to be higher than the thickness of the reinforcing sheets on the surface of the winding layer before the reinforcing sheets are paved, the reinforcing sheets are laminated or wound and formed through carbon cloth and glass cloth, a through hole is reserved in the center, the reinforcing sheets are assembled and positioned with the through hole through the set screw 9, the surface of the reinforcing sheets are fixedly adhered with thin glass cloth impregnated with winding resin after the reinforcing sheets are paved, and the number of the reinforcing sheet paving layers is determined according to a mechanical calculation result;
step 9: discharging the cured shell, and processing a round hole on the composite material end socket according to the axis of the end socket opening through numerical control processing equipment or a special tool;
step 10: removing the shell winding core mould;
step 11: a rubber layer 11 is stuck or molded on the surface of the seal head open-pore metal part 2, sand is blown at the joint of the metal surface and the rubber layer, and an adhesive is coated between the rubber and the metal;
step 12: coating adhesive on the outer surface of the seal head open-pore metal part 2 after the rubber layer is adhered, fixing the seal head open-pore metal part 2 to the design position of the container seal head by using the fixture and the threads 10 of the seal head open-pore metal part 2, and disassembling the fixture after the adhesive is solidified;
step 13: sticking two layers of raw rubber sheets between a rubber layer on the surface of the metal part 2 of the open hole of the inner end socket of the container and a rubber layer on the inner surface of the container;
step 14: paving a soft heating sheet on the surface of the adhered rubber green sheet;
step 15: assembling a container internal pressure test tool plug, and penetrating a heating plate control cable out of a test tool preformed hole;
step 16: introducing nitrogen into the container through the test tool, evacuating the original air, sealing the container, and pressurizing to 0.5-1.0MPa;
step 17: heating and vulcanizing by using a heating/temperature controlling device according to the vulcanization characteristics of the selected rubber, and then adhering two layers of rubber;
step 18: after the rubber is vulcanized, naturally cooling the interior of the container to below 40 ℃, removing the internal air pressure, and removing the redundancy such as the internal pressure test tool, the heating plate in the container and the like;
step 19: and (5) performing internal pressure and airtight test verification according to the design requirement of the container.
The embodiments of the invention disclosed above are intended only to help illustrate the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention.
Claims (10)
1. The utility model provides a head trompil carbon fiber winding pressure vessel which characterized in that: including joint metalwork, head trompil metalwork (2), inside lining repair layer (3), inner liner (5) and fibre winding structure layer (6), the joint metalwork includes metal joint (1) and trompil metalwork (8), metal joint (1) and trompil metalwork (8) set up both ends about pressure vessel, head trompil metalwork (2) set up in one side of pressure vessel's metal joint (1), the outside of head trompil metalwork (2) and pressure vessel junction is equipped with inside lining repair layer (3), and pressure vessel's internal surface is inner liner (5), and pressure vessel's surface is fibre winding structure layer (6).
2. A head open cell carbon fiber wound pressure vessel as defined in claim 1 wherein: the two ends of the upper side and the lower side of the pressure container are respectively provided with a small-end connecting skirt (4) and a large-end connecting skirt (7).
3. A head open cell carbon fiber wound pressure vessel as defined in claim 1 wherein: threads (10) are arranged on the outer side of the opening of the end socket open-pore metal piece (2).
4. A head open cell carbon fiber wound pressure vessel as defined in claim 1 wherein: the outer side of the seal head open-pore metal piece (2) is provided with a rubber layer (11).
5. A method for forming a head open-cell carbon fiber wound pressure vessel as claimed in any one of claims 1 to 4, wherein: it comprises the following steps:
step 1: a winding mandrel is designed and processed according to the inner surface of the pressure container, threads are processed on the end socket perforated metal piece (2), the thread center line is consistent with the center line of the perforation, then a set screw (9) is assembled, and the tail end of the set screw (9) is flush with the surface of the mandrel;
step 2: coating sealing rubber layers on the inner surface and the outer surface of a flange of the joint metal piece;
step 3: assembling the coated joint metal piece to two ends of the core mold according to the positioning surface of the core shaft;
step 4: coating the surface of the whole core mold with two layers of rubber, and connecting the rubber with a metal joint (1) of a pressure container through a reserved lap joint;
step 5: uniformly brushing interface glue on the surface of the coated rubber, removing the rubber at the tail end of the set screw (9), and screwing out until the rubber is flush with the surface of the rubber;
step 6: the fiber winding structure layer (6) is coated on the surface of the rubber, and before each longitudinal layer is wound, the set screw (9) is screwed out to be flush with the outer surface of the fiber winding structure layer (6);
step 7: paving reinforcing sheets between the longitudinal winding layers;
step 8: after all longitudinal layers are wound and reinforcing sheets are paved, assembling a small end connecting skirt (4) of a container and a large end connecting skirt (7) of the container, and then feeding the wound skirt into a furnace for solidification after the outer ring of the wound skirt is layered;
step 9: discharging the cured shell, and processing a round hole on the composite material end socket according to the axis of the end socket opening through numerical control processing equipment or a special tool;
step 10: removing the shell winding core mould;
step 11: a rubber layer (11) is stuck or molded on the surface of the seal head open-pore metal piece (2), sand is blown at the joint of the metal surface and the rubber layer, and an adhesive is coated between the rubber and the metal;
step 12: coating adhesive on the outer surface of the seal head open-pore metal (2) after the rubber layer is adhered, fixing the seal head open-pore metal (2) to the design position of the container seal head by using the tool and threads (10) of the seal head open-pore metal (2), and dismantling the tool after the adhesive is solidified;
step 13: sticking two layers of rubber sheets between a surface rubber layer of an open-pore metal piece (2) of an inner seal head of the container and a rubber layer of the inner surface of the container;
step 14: paving a soft heating sheet on the surface of the adhered rubber green sheet;
step 15: assembling a container internal pressure test tool plug, and penetrating a heating plate control cable out of a test tool preformed hole;
step 16: introducing nitrogen into the container through the test tool, evacuating the original air, sealing the container, and pressurizing to 0.5-1.0MPa;
step 17: heating and vulcanizing by using a heating/temperature controlling device according to the vulcanization characteristics of the selected rubber, and then adhering two layers of rubber;
step 18: after the rubber is vulcanized, naturally cooling the interior of the container to below 40 ℃, removing the internal air pressure, and removing the redundancy such as the internal pressure test tool, the heating plate in the container and the like;
step 19: and (5) performing internal pressure and airtight test verification according to the design requirement of the container.
6. The method for forming the head open-pore carbon fiber winding pressure vessel according to claim 5, wherein the method comprises the following steps: in the step 2, the inner surface of the joint metal piece is coated with two layers of rubber with the thickness of 1mm, the inner surface and the outer surface are coated with two layers of rubber, the outer surface is coated with one layer of rubber, and a 20mm lap joint is reserved outside the maximum diameter of the flange.
7. The method for forming the head open-pore carbon fiber winding pressure vessel according to claim 5, wherein the method comprises the following steps: and 4, the lap joint width of each layer of rubber in butt joint is not less than 10mm, and the lap joints of the two layers of rubber are staggered.
8. The method for forming the head open-pore carbon fiber winding pressure vessel according to claim 5, wherein the method comprises the following steps: in the step 6, the structural layer and the total thickness of the fiber winding structural layer (6) are determined by using a composite material mechanics calculation method according to the use pressure and the safety coefficient.
9. The method for forming the head open-pore carbon fiber winding pressure vessel according to claim 5, wherein the method comprises the following steps: in the step 7, before the reinforcing sheet is paved, the set screw (9) is screwed out to be higher than the thickness of the reinforcing sheet on the surface of the winding layer, the reinforcing sheet is laminated or wound and formed by carbon cloth and glass cloth, a through hole is reserved in the center, the reinforcing sheet is assembled and positioned with the through hole by the set screw (9), the surface of the reinforcing sheet is adhered with thin glass cloth impregnated with winding resin for fixation after the reinforcing sheet is paved, and the number of the reinforcing sheet paved layers is determined according to a mechanical calculation result.
10. The method for forming a head open-celled carbon fiber wrapped pressure vessel of claim XX, wherein the method comprises the steps of: the core mould in the step 1 adopts a metal skeleton gypsum core mould or a sand core mould structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310452141.6A CN116447321A (en) | 2023-04-25 | 2023-04-25 | End socket open-pore carbon fiber winding pressure vessel and forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310452141.6A CN116447321A (en) | 2023-04-25 | 2023-04-25 | End socket open-pore carbon fiber winding pressure vessel and forming method thereof |
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| CN202310452141.6A Pending CN116447321A (en) | 2023-04-25 | 2023-04-25 | End socket open-pore carbon fiber winding pressure vessel and forming method thereof |
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