CN113909806A - Preparation method of large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container - Google Patents
Preparation method of large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container Download PDFInfo
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- CN113909806A CN113909806A CN202111113634.4A CN202111113634A CN113909806A CN 113909806 A CN113909806 A CN 113909806A CN 202111113634 A CN202111113634 A CN 202111113634A CN 113909806 A CN113909806 A CN 113909806A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
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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
Abstract
The invention discloses a preparation method of a large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container, which comprises the following steps of: selecting a seamless austenitic stainless steel pipe as a base material to prepare a cylinder body; preparing an oval end socket by adopting an austenitic stainless steel plate through stamping or cold spinning, and forming a through hole in the center of the oval end socket; preparing a cap-shaped bottleneck joint by adopting forging integral forming, and processing internal and external threads and a sealing surface on the cap-shaped bottleneck joint; carrying out assembly welding on the cylinder body, the oval end socket and the cap-shaped bottleneck joint to prepare a stainless steel welding liner, wherein the assembly welding adopts single-side welding and double-side forming; winding carbon fibers on the outer surface of the stainless steel welding liner by adopting a combined winding process of orthogonal winding and cross winding to obtain a carbon fiber winding pressure-bearing layer; winding glass fiber on the outer surface of the carbon fiber winding pressure-bearing layer to obtain a glass fiber winding protective layer; and (5) drying and curing. The invention adopts the welding forming process, thereby reducing the equipment investment and the process cost of spinning and heat treatment.
Description
Technical Field
The invention relates to the technical field of high-capacity high-pressure gas storage equipment, in particular to a preparation method of a large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container.
Background
One of the important end applications of hydrogen energy is fuel cell electric vehicles, and a hydrogen refueling station is an important infrastructure for the development of hydrogen energy and fuel cell electric vehicles as a place for refueling the hydrogen fuel cell electric vehicles. By the end of 2020, about 50 hydrogenation stations are built in China, and the number of the hydrogenation stations in China reaches 1000 by 2030. At present, the pressure of a hydrogen storage bottle type container in a hydrogen filling station is mostly 50MPa, but with the development of 70MPa passenger cars, a 90MPa hydrogen storage buffer tank in the hydrogen filling station is gradually arranged at present. At present, hydrogen storage buffer tanks for a hydrogen filling station mainly comprise a small-volume gas cylinder group, a steel belt staggered high-pressure container and a steel seamless cylinder type container group.
The small-volume gas cylinder group for the hydrogen filling station is formed by assembling a plurality of seamless steel gas cylinders (1 type), steel liner fiber circumferential winding cylinders (2 type), metal liner fiber full winding cylinders (3 type) and plastic liner fiber winding cylinders (4 type).
The small-volume gas cylinder group for the hydrogen filling station has the advantages of easy pressure classification and volume combination, short manufacturing period, strong field adaptability, simple forming process and low manufacturing cost. Meanwhile, the device also has the problems of small unit volume, large number of containers, many leakage points, large safety distance, large one-time investment and high operation cost; the gas cylinder is supervised by TSG 23 gas cylinder safety technical regulation, can not be periodically checked on site, and needs to be integrally checked in a rechecking station, so that the small-volume gas cylinder group for the hydrogenation station is difficult to implement, and the operation cost is high.
The steel band staggered-winding type high-pressure container adopts a welding cylinder made of an austenitic stainless steel plate and a seal head made of an austenitic stainless steel composite steel plate to be assembled and welded into an inner container, and steel bands are wound and welded on the welding cylinder according to a certain angle so as to improve the bearing capacity of the container; the hydrogen-resistant material has the advantages of good hydrogen embrittlement resistance, large water volume, small number of containers and few leakage points. Since a large part of the thickness of the vessel consists of the layers of the band, a lot of welding, inspection and heat treatment efforts are required. Compared with the high-pressure container with other structural types, the steel belt staggered winding type high-pressure container has low production efficiency and high manufacturing cost; meanwhile, the defects of difficult pressure classification and volume combination, complex manufacturing process, long delivery period, high manufacturing cost, weak site adaptability, high operation and maintenance cost and difficult periodic inspection exist.
The steel seamless bottle container is formed by locally heating, spinning and closing up two ends of a seamless steel pipe, belongs to an integral weldless structure, effectively avoids the defects of cracks, air holes, slag inclusion and the like which are possibly caused by welding, but uses high-strength steel which is sensitive to hydrogen embrittlement and has the technical problems of difficult spinning and closing up and heat treatment due to thick wall thickness.
At present, the small-volume gas cylinder group and the steel belt staggered high-pressure container are limited by the manufacturing cost, the manufacturing period, the combination mode, the capacity and the pressure-bearing capacity, and the requirements of market development cannot be met. The large-volume carbon fiber fully-wound composite material gas cylinder is used for hydrogen storage in a hydrogen filling station, and has low sensitivity to hydrogen embrittlement and high cost, so that the wide application is limited.
The specification CN 2535651Y discloses a welded heat-insulating gas cylinder, which comprises an inner container, an outer container, a heat-insulating layer, a connecting piece between the inner and outer containers, a connecting piece between a protective ring and the outer container, and a base for supporting the gas cylinder. The lower ends of the inner and outer containers are connected in the following way: the molecular sieve tray and the lower end supporting block are respectively welded with the lower end socket of the inner container, the lower end supporting sleeve is welded with the lower end socket of the outer container, and the lower end supporting block passes through the central hole of the molecular sieve tray and then is inserted into the central hole of the lower end supporting sleeve. The connection between the guard ring and the outer container adopts four guard ring supporting plates which are respectively welded with the upper end enclosure of the outer container and the guard ring. The utility model discloses a adiabatic gas cylinder of welded structure mainly used splendid attire low temperature liquid oxygen, liquid nitrogen, liquid hydrogen etc. require than higher to the thermal insulation performance of gas cylinder, stability can, nevertheless because its capacious and operating pressure are low, so this gas cylinder its splendid attire that is not applicable to compressed gas such as hydrogen, methane, helium.
The specification with the publication number of CN 109604938A discloses a forming method of a thin-wall stainless steel gas cylinder, which adopts a cold-drawn tube blank as a blank, obtains a closing-up spinning piece A and a closing-up spinning piece B through strong spinning and closing-up spinning in sequence, respectively carries out heat treatment and mechanical processing and shaping on the closing-up spinning piece A and the closing-up spinning piece B in sequence, and finally welds the processed closing-up spinning piece A and the closing-up spinning piece B together through an argon arc welding mode. The invention mainly solves the problems of large thickness and large overall weight of the traditional pure steel gas cylinder at present, and due to the characteristic of a thin-wall structure, the invention can not be applied to a gas cylinder with high pressure and large diameter, which can cause failure risk.
Disclosure of Invention
The invention aims to provide a preparation method of a large-diameter stainless steel welding liner carbon fiber fully-wound bottle type container, which reduces equipment investment and process cost for spinning and heat treatment in the large-diameter stainless steel welding liner carbon fiber fully-wound bottle type container through an assembly welding process of a stainless steel welding liner.
A preparation method of a large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container comprises the following steps:
(1) selecting a seamless austenitic stainless steel pipe as a base material to prepare a cylinder body, and processing grooves at two ends of the cylinder body;
(2) preparing an oval end enclosure by adopting an austenitic stainless steel plate through stamping or cold spinning, forming a through hole in the center of the oval end enclosure, and processing grooves on the straight edge section of the oval end enclosure and the edge of the through hole;
(3) preparing a cap-shaped bottleneck joint by adopting forging integral forming, and processing internal and external threads and a sealing surface on the cap-shaped bottleneck joint;
(4) assembling and welding the barrel, the oval end socket and the cap-shaped bottleneck joint obtained in the steps (1) to (3) respectively to prepare the stainless steel welding liner by matching the grooves, wherein the assembling and welding adopt single-side welding and double-side forming;
(5) winding carbon fibers on the outer surface of the stainless steel welding liner by adopting a combined winding process of orthogonal winding and cross winding, and filling epoxy resin between the carbon fibers to obtain a carbon fiber winding pressure-bearing layer wound outside the stainless steel welding liner;
(6) winding glass fibers on the outer surface of the carbon fiber winding bearing layer, and filling epoxy resin between the glass fibers to obtain a glass fiber winding protective layer arranged outside the carbon fiber winding bearing layer;
(7) and transferring the wound stainless steel welding inner container to a curing furnace for drying and curing.
Preferably, in the step (1), the base material is a seamless austenitic stainless steel pipe with a diameter of 406 mm-660 mm, a thickness of 8.8-16 mm and a design water capacity of 200L-2000L.
In the step (4), the specific steps of preparing the stainless steel welding liner by adopting assembly welding are as follows:
(4-1) welding the cap-shaped bottleneck joint and the elliptical seal head, performing ray detection on the obtained welding line after welding, and polishing the inner surface and the outer surface of the welding line after the ray detection is qualified;
and (4-2) assembling the elliptical seal head and the cylinder body, ensuring that the misalignment amount is smaller than a preset error value, welding the elliptical seal head and the cylinder body, and adopting a special welding material meeting the magnetic phase requirement during welding.
In the step (4), a direct-current pulse power supply is adopted for assembly welding, and the peak current, the base current and the welding speed of backing welding are determined through tests.
The peak current mainly determines the weld penetration, and on the premise that the average current is not changed, the larger the peak current is, the deeper the weld penetration is; the base value current mainly maintains the stable combustion of the current, preheats the base metal and the welding wire, and accelerates the solidification of a molten pool in the time interval of the base value current; the peak current and the base current are matched with the welding speed and are obtained through test debugging, so that the penetration of the welding seam is ensured, and the extra height of the welding seam meets the design requirement.
Preferably, an automatic argon arc welding machine is adopted for assembly welding, the welding parameters of the automatic welding machine are stable, and meanwhile, a special rotating and fixing tool is matched, so that the quality of a welding line during assembly welding is guaranteed.
In the step (5), the specific steps of winding the carbon fibers on the outer surface of the stainless steel welding liner by adopting the combined winding process of orthogonal winding and cross winding are as follows: during cross winding, the carbon fiber yarns soaked in the epoxy resin glue solution are subjected to reciprocating winding with a helical angle of 50-65 degrees or-50-65 degrees in the bottle body range; when orthogonal winding is carried out, the carbon fiber filaments soaked in the epoxy resin glue solution are circularly and reciprocally wound in the range of the bottle body; and carrying out cross combination winding and solidification of cross winding and orthogonal winding to obtain the carbon fiber winding pressure-bearing layer wound outside the stainless steel welding inner container.
The invention also provides the large-diameter stainless steel welding liner carbon fiber fully-wound bottle type container prepared by the method, and the bottle type container has strong pressure resistance, is simple and convenient to prepare and is not easy to corrode.
The utility model provides a full winding bottle formula container of major diameter stainless steel welding inner bag carbon fiber, includes the end plug at stainless steel welding inner bag and locate stainless steel welding inner bag both ends, the stainless steel welding inner bag includes that barrel, center department are equipped with the oval head and the cap-shaped bottleneck of through-hole and connects, the oval head that center department was equipped with the through-hole is all welded at the both ends of barrel, the through-hole department welding of oval head has the cap-shaped bottleneck to connect. A carbon fiber winding bearing layer is arranged outside the stainless steel welding liner, a glass fiber winding protective layer is arranged outside the carbon fiber winding bearing layer, and two ends of the carbon fiber winding bearing layer are abutted to the cap-shaped bottleneck joint; the cap-shaped bottleneck joint is connected with the end plug.
Preferably, the length-diameter ratio of the outer surface of the oval end socket is 1.3-2.0: 1; the carbon fiber winding pressure-bearing layer and the glass fiber winding protective layer are effectively prevented from slipping when being wound, and the fatigue resistance of the large-diameter stainless steel welding liner carbon fiber full-winding bottle type container is improved.
The cap-shaped neck joint is provided with an internal thread for sealing connection and an external thread for fixed connection. The elliptical sealing head and the cap-shaped bottleneck joint are connected in a welding mode, so that the processing of threads at the cap-shaped bottleneck joint is facilitated.
Compared with the prior art, the invention has the advantages that:
1. the large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container adopts austenitic stainless steel materials, so that the large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container has good compatibility with compressed gases such as hydrogen, methane, helium and the like, particularly has excellent compatibility with the hydrogen, and avoids hydrogen damage;
2. the stainless steel welding inner container adopts a welding forming process, so that the equipment investment and the process cost of spinning and heat treatment are reduced;
3. the high-strength carbon fiber is adopted for winding, a pressure bearing layer is formed after curing, and the pressure bearing layer can bear 2.5 times of working pressure without failure, so that the safety margin is large when the working pressure is 87.5-100 MPa.
Drawings
FIG. 1 is a schematic structural diagram of a large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container in an embodiment of the invention.
Fig. 2 is a schematic structural view of the stainless steel welded inner container in fig. 1.
Fig. 3 is a schematic structural view of the cylinder, the elliptical head and the cap-shaped neck joint in fig. 1.
Fig. 4 is a partially enlarged structural view at a in fig. 3.
FIG. 5 is a schematic winding diagram of carbon fiber of a large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container in an embodiment of the invention.
Detailed Description
As shown in fig. 1-4, the large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container comprises a stainless steel welded liner 1 and end plugs 2 at two ends of the bolt stainless steel welded liner 1, the stainless steel welded liner 1 comprises a cylinder body 3, two ends of the cylinder body 3 are both welded with oval end enclosures 4 with through holes at the centers, and cap-shaped bottleneck joints 5 are welded at the through holes of the oval end enclosures 4. A carbon fiber winding bearing layer 6 is arranged outside the stainless steel welding liner 1, a glass fiber winding protective layer 7 is arranged outside the carbon fiber winding bearing layer 6, and two ends of the carbon fiber winding bearing layer 6 are respectively abutted to the cap-shaped bottleneck joints 5.
The cap-shaped neck joint 5 is provided with an internal thread for a sealing connection and an external thread for a fixed connection. The elliptical sealing head 4 and the cap-shaped bottleneck joint 5 are connected in a welding mode, so that the processing of threads at the cap-shaped bottleneck joint 5 is facilitated.
Taking the structure of a stainless steel welding liner carbon fiber fully-wound bottle type container with the water capacity of 2000L as an example, the preparation method comprises the following steps:
(1) a seamless austenitic stainless steel pipe with the diameter of 620mm, the thickness of 16mm and the designed water capacity of 1000L is selected as a base material to prepare the cylinder 3, and grooves are processed at two ends of the cylinder 3.
(2) An austenitic stainless steel plate is adopted to prepare a stainless steel plate with the external surface length-to-diameter ratio of 1.8: 1, and a through hole with the diameter of 300mm is formed in the center of the oval end socket 4, and grooves are processed on the straight section of the oval end socket 4 and the edge of the through hole.
(3) The cap-shaped bottleneck joint 5 is manufactured by forging integral forming, the outer diameter of the cap-shaped bottleneck joint 5 is 160-195 mm, the inner diameter is 63-77 mm, the inner thread and the outer thread and the sealing surface are processed on the cap-shaped bottleneck joint 5, and the cap edge diameter of the cap-shaped bottleneck joint 5 is 298 mm.
(4) And (3) carrying out assembly welding on the barrel 3, the elliptical seal head 4 and the cap-shaped bottleneck joint 5 respectively obtained in the steps (1) to (3) by matching the grooves to prepare the stainless steel welding liner 1, wherein the assembly welding adopts single-side welding and double-side forming, and the concrete steps are as follows:
(4-1) welding the cap-shaped bottleneck joint 5 and the elliptical seal head 4, and performing 100% ray detection on the obtained welding line after welding, wherein the technical grade of the ray detection is not lower than the AB grade of a corresponding detection method, and the qualified grade of the ray detection is not lower than the II grade. And after the ray detection is qualified, polishing the inner surface and the outer surface of the welding line to enable the residual height of the welding line to be not more than 1 mm.
(4-2) assembling the elliptical seal head 4 and the cylinder 3 to ensure that the misalignment amount is less than 1 mm; the elliptical seal head 4 and the cylinder 3 are welded, and special welding materials meeting the requirement of magnetic phase are adopted during welding.
And (3) adopting a direct-current pulse power supply to carry out assembly welding, and determining the peak current, the base current and the welding speed of backing welding when the stainless steel welding liner 1 is prepared by assembly welding through tests. The peak current mainly determines the weld penetration, and on the premise that the average current is not changed, the larger the peak current is, the deeper the weld penetration is; the base value current mainly maintains the stable combustion of the current, preheats the base metal and the welding wire, and accelerates the solidification of a molten pool in the time interval of the base value current; the peak current and the base current are matched with the welding speed and are obtained through test debugging, so that the penetration of the welding seam is ensured, and the extra height of the welding seam meets the design requirement.
(5) The method comprises the following steps of winding carbon fibers on the outer surface of a stainless steel welding liner 1 by adopting a combined winding process of orthogonal winding and cross winding, filling epoxy resin between the carbon fibers, and curing the epoxy resin to obtain a carbon fiber winding bearing layer 6 wound outside the stainless steel welding liner, wherein the specific steps are as follows:
as shown in fig. 5, the aspect ratio of the outer surface of the elliptical head 4 is 1.8: 1, realizing the setting of the carbon fiber helix angle. During cross winding, the carbon fiber yarns soaked with the epoxy resin glue solution are subjected to reciprocating winding with a helical angle of 60 degrees or-60 degrees within the range of the bottle body; when orthogonal winding is carried out, the carbon fiber filaments soaked in the epoxy resin glue solution are circularly and reciprocally wound in the range of the bottle body; and (3) carrying out cross combination winding solidification of cross winding and orthogonal winding to obtain the carbon fiber winding pressure-bearing layer 6 wound outside the stainless steel welding inner container 1.
(6) The method comprises the following steps of winding glass fibers on the outer surface of the carbon fiber winding bearing layer 6, filling epoxy resin between the glass fibers, and curing the epoxy resin to obtain a glass fiber winding protective layer 7 arranged outside the carbon fiber winding bearing layer, wherein the method comprises the following specific steps:
from the one end department of the bottleneck of stainless steel welding inner bag 1 along the reciprocating type bottleneck that encircles at both ends of axial spiral, form thickness and be 2 ~ 3mm glass fiber winding protective layer 7, the carbon fiber in the carbon fiber winding bearing layer is cut off in the damage of glass fiber winding 7 protective layer prevention impact nature to prevent to form local fatigue failure point, and the whole carbon fiber winding bearing layer 6 that leads to inefficacy to the resistance to compression compensation effect of inner bag.
(7) And transferring the wound stainless steel welded liner carbon fiber fully wound bottle type container to a curing furnace for drying and curing. Connecting the cured stainless steel welded liner carbon fiber fully-wound bottle type container into a water jacket cover and tightly connecting, slowly turning the container to 90 degrees through a hydraulic test turning frame, vertically putting the container into a well casing, boosting the pressure to a set self-tightening pressure, and maintaining the pressure for 60 s; pressurizing the water pressure test for 120 s; calculating the total expansion, elastic expansion and residual expansion rate, wherein the residual expansion rate is 2%; and finally, cleaning and drying. Because the stainless steel welding inner container 1 is made of austenitic stainless steel materials, the inner wall of the inner container is not rusted in a hydrostatic test.
Claims (9)
1. A preparation method of a large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container is characterized by comprising the following steps:
(1) selecting a seamless austenitic stainless steel pipe as a base material to prepare a cylinder body, and processing grooves at two ends of the cylinder body;
(2) preparing an oval end enclosure by adopting an austenitic stainless steel plate through stamping or cold spinning, forming a through hole in the center of the oval end enclosure, and processing grooves on the straight edge section of the oval end enclosure and the edge of the through hole;
(3) preparing a cap-shaped bottleneck joint by adopting forging integral forming, and processing internal and external threads and a sealing surface on the cap-shaped bottleneck joint;
(4) assembling and welding the barrel, the oval end socket and the cap-shaped bottleneck joint obtained in the steps (1) to (3) respectively to prepare the stainless steel welding liner by matching the grooves, wherein the assembling and welding adopt single-side welding and double-side forming;
(5) winding carbon fibers on the outer surface of the stainless steel welding liner by adopting a combined winding process of orthogonal winding and cross winding, and filling epoxy resin between the carbon fibers to obtain a carbon fiber winding pressure-bearing layer wound outside the stainless steel welding liner;
(6) winding glass fibers on the outer surface of the carbon fiber winding bearing layer, and filling epoxy resin between the glass fibers to obtain a glass fiber winding protective layer arranged outside the carbon fiber winding bearing layer;
(7) and transferring the wound stainless steel welding inner container to a curing furnace for drying and curing.
2. The method for preparing the large-diameter stainless steel welding liner carbon fiber fully-wound bottle type container according to claim 1, wherein in the step (1), the seamless austenitic stainless steel pipe with the diameter of 406-660 mm, the thickness of 8.8-16 mm and the designed water capacity of 200-2000L is adopted as the base material.
3. The method for preparing the large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container according to claim 1, wherein in the step (4), the specific steps of preparing the stainless steel welded liner by assembly welding are as follows:
(4-1) welding the cap-shaped bottleneck joint and the elliptical seal head, performing ray detection on the obtained welding line after welding, and polishing the inner surface and the outer surface of the welding line after the ray detection is qualified;
and (4-2) assembling the elliptical seal head and the cylinder body, ensuring that the misalignment amount of the assembly is smaller than a preset error value, and then welding the elliptical seal head and the cylinder body.
4. The method for preparing the large-diameter stainless steel welding liner carbon fiber fully-wound bottle type container according to claim 1, wherein in the step (4), a direct-current pulse power supply is adopted for assembly welding, and the peak current, the base current and the welding speed of the backing welding are determined through tests.
5. The method for preparing the large-diameter stainless steel welding inner container carbon fiber fully-wound bottle type container according to claim 4, wherein an automatic argon arc welding machine is adopted for assembly welding.
6. The method for preparing the large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container as claimed in claim 1, wherein in the step (5), the specific steps of winding the carbon fiber on the outer surface of the stainless steel welded liner by adopting the combined winding process of orthogonal winding and cross winding are as follows: during cross winding, the carbon fiber yarns soaked in the epoxy resin glue solution are subjected to reciprocating winding with a helical angle of 50-65 degrees or-50-65 degrees in the bottle body range; when orthogonal winding is carried out, the carbon fiber filaments soaked in the epoxy resin glue solution are circularly and reciprocally wound in the range of the bottle body; and carrying out cross combination winding and solidification of cross winding and orthogonal winding to obtain the carbon fiber winding pressure-bearing layer wound outside the stainless steel welding inner container.
7. A large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container comprises a stainless steel welded liner and an end plug, and is characterized in that the stainless steel welded liner is manufactured by the manufacturing method of any one of claims 1 to 6 and comprises a cylinder body, an oval end socket with a through hole in the center is welded at each of two ends of the cylinder body, and a cap-shaped bottleneck joint is welded at the through hole of the oval end socket; the stainless steel welding inner bag is equipped with carbon fiber winding bearing layer outward, be equipped with glass fiber winding protective layer outside the carbon fiber winding bearing layer, the both ends of carbon fiber winding bearing layer all offset with cap shape bottleneck joint, cap shape bottleneck joint be connected with the end plug.
8. The large-diameter stainless steel welded liner carbon fiber fully-wound bottle type container as claimed in claim 7, wherein the aspect ratio of the outer surface of the elliptical head is 1.3-2.0: 1.
9. the large-diameter stainless steel welded liner carbon fiber fully wrapped bottle container according to claim 7, wherein the cap-shaped neck joint is provided with an internal thread for sealing connection and an external thread for fixing connection.
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| CN115076591B (en) * | 2022-06-06 | 2024-01-26 | 光年探索(江苏)空间技术有限公司 | Stainless steel II-type gas cylinder and manufacturing method thereof |
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| CN113909806B (en) | 2023-05-16 |
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Address after: 312365 Hangzhou Bay Shangyu Economic and Technological Development Zone, Shaoxing City, Zhejiang Province Applicant after: Zhejiang Lanneng Hydrogen Technology Co.,Ltd. Applicant after: SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT Co.,Ltd. Address before: 312369 Hangzhou Shangyu economic and Technological Development Zone, Shaoxing, Zhejiang Applicant before: ZHEJIANG REIN GAS EQUIPMENT Co.,Ltd. Applicant before: SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT Co.,Ltd. |
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