CN211260335U - Gas cylinder mouth structure with plastic liner and fully-wound fibers - Google Patents
Gas cylinder mouth structure with plastic liner and fully-wound fibers Download PDFInfo
- Publication number
- CN211260335U CN211260335U CN201921963528.3U CN201921963528U CN211260335U CN 211260335 U CN211260335 U CN 211260335U CN 201921963528 U CN201921963528 U CN 201921963528U CN 211260335 U CN211260335 U CN 211260335U
- Authority
- CN
- China
- Prior art keywords
- joint
- plastic liner
- connecting pipe
- gas cylinder
- internal thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a gas cylinder mouth structure with a plastic liner and fully wound fibers, which comprises a metal bottle mouth and a plastic liner, wherein the top of an upper head of the plastic liner is recessed inwards to form an embedded groove, and a connecting pipe with a first external connecting thread section is arranged in the embedded groove; the metal bottle mouth consists of an outer joint and an inner adapter, an embedded block matched with the embedded groove is arranged at the bottom of the outer joint, a joint inner threaded hole in the outer joint penetrates downwards, and the embedded block is fixed in the embedded groove and then the outline of the embedded block and the outline of the upper end enclosure are spliced into a spherical surface; the inner head is provided with a mounting hole, and the upper section of the mounting hole is provided with an inner thread section; the inner joint head is composed of an upper column body and a lower column body with a second external connecting thread section, the inner joint head is screwed in the external joint through the second external connecting thread section, and the lower column body clamps the connecting pipe between the lower column body and the internal thread hole of the joint; a first sealing structure is further arranged between the lower column body and the inner hole of the connecting pipe. The structure is convenient to install and good in sealing performance.
Description
Technical Field
The utility model relates to a store up hydrogen technical field, especially relate to a plastics inner bag fibre twines gas cylinder bottleneck structure entirely.
Background
Hydrogen energy is a recognized clean energy source and is valued for its advantages of abundant resources, high combustion value, cleanliness and renewability. With the rapid development of fuel cell and battery automobile technologies, safe and efficient hydrogen storage technology becomes the key for hydrogen energy application.
The vehicle hydrogen storage mode adopts a gas cylinder to store hydrogen at high pressure and normal temperature, and the current gas cylinders have four types: the gas cylinder comprises an all-metal gas cylinder, a metal liner fiber circumferential winding gas cylinder, a metal liner fiber full winding gas cylinder and a plastic liner fiber full winding gas cylinder. The full-metal gas cylinder, the gas cylinder with the metal liner and the fiber wound in the circumferential direction are large in weight-volume ratio, difficult to meet the requirement of unit mass hydrogen storage density, and not ideal for a vehicle-mounted hydrogen supply system. The gas cylinder with the plastic liner fully wound with fibers is limited by the strength of the plastic and the like, the cylinder opening is made of a metal material, the difference between the modulus and the thermal expansion coefficient of the metal material and the plastic material is large, the defect that the connection between the metal cylinder opening and the plastic liner is not firm exists, the risk of hydrogen leakage is easy to occur during use, and great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve is: the utility model provides a simple to operate, the good plastics inner bag fibre of sealing performance twines gas cylinder bottleneck structure entirely, simple to operate, connection are reliable between metal bottleneck and the plastics inner bag in the above-mentioned structure, and the metal bottleneck can be from sealing on the plastics inner bag.
In order to solve the above problem, the utility model adopts the following technical scheme: plastics inner bag fibre twine gas cylinder bottleneck structure entirely, include: the plastic liner comprises a metal bottle mouth and a plastic liner, wherein the top of an upper end enclosure of the plastic liner is recessed inwards to form an embedded groove, a connecting pipe which protrudes outwards and is coaxial with the plastic liner is arranged in the middle of the embedded groove, the connecting pipe is communicated with an inner cavity of the plastic liner, the connecting pipe and the upper end enclosure are integrally formed, and a first external connecting thread section is arranged on the outer wall of the connecting pipe; the metal bottle mouth consists of an outer joint and an inner adapter, an embedded block is arranged at the bottom of the outer joint, the profile of the bottom surface of the embedded block is correspondingly matched with the profile of the embedded groove, a joint internal thread hole in the outer joint downwards penetrates through the bottom surface of the embedded block, and the outer joint is screwed on the connecting pipe through the joint internal thread hole and the first external connecting thread section, so that the embedded block is fixed in the embedded groove; after the embedded block is fixed in the embedded groove, the top contour of the embedded block and the outer contour of the upper end enclosure are spliced into a spherical surface; an up-down through mounting hole is arranged in the inner joint head, and an internal thread section screwed with the connecting piece of the bottle mouth valve is arranged on the upper section of the mounting hole; the inner joint head is formed by integrally forming an upper cylinder body and a lower cylinder body which are coaxial from top to bottom, a second external connecting thread section matched with the joint internal thread hole is arranged on the upper cylinder body, the lower cylinder body is matched with the inner hole of the connecting pipe, the inner joint head is screwed on the external joint through the second external connecting thread section on the upper cylinder body and the joint internal thread hole, and the lower cylinder body extends into the inner hole of the connecting pipe and clamps the connecting pipe between the lower cylinder body and the joint internal thread hole; a first sealing structure is further arranged between the lower column body and the inner hole of the connecting pipe.
Further, the plastic liner fiber is wound around the cylinder opening of the gas cylinder, wherein the first sealing structure is as follows: at least one first sealing groove is arranged on the lower column body from top to bottom at intervals in sequence, and a first sealing ring is respectively placed in each first sealing groove.
Further, in the structure in which the plastic liner fiber is completely wound around the opening of the gas cylinder, the bottom of the embedded groove is a circular plane, and the profile of the embedded groove is a bowl-shaped profile which is smoothly and transitionally connected with the outer profile of the upper end enclosure after gradually expanding outwards from bottom to top from the edge of the circular plane.
Further, in the cylinder opening structure of the gas cylinder with the plastic liner fully wound with fibers, the horizontal plane of the lower end of the internal thread section in the mounting hole is higher than the horizontal plane of the upper end of the sealing structure.
Further, in the structure in which the plastic liner fibers are fully wound around the opening of the gas cylinder, a second sealing structure is arranged in the mounting hole between the horizontal plane where the lower end of the internal thread section is located and the horizontal plane where the upper end of the sealing structure is located.
Further, the plastic liner fiber is wound around the cylinder opening of the gas cylinder, wherein the second sealing structure is as follows: at least one second sealing groove is arranged in the mounting hole between the horizontal plane where the lower end of the internal thread section is located and the horizontal plane where the upper end of the sealing structure is located at intervals from top to bottom, and second sealing rings are respectively placed in the second sealing grooves.
Further, the cylinder mouth structure of the gas cylinder is fully wound by the plastic liner fibers, wherein the upper section of the outer connector is of a prism structure protruding in the circumferential direction.
Further, the plastic liner fiber is wound around the opening of the gas cylinder, wherein a circular plate is arranged at the upper end of the upper cylinder body, the circular plate and the upper cylinder body are integrally formed, and a pair of cutting platforms are symmetrically cut on the circular plate.
Further, in the structure in which the plastic liner fibers are fully wound around the opening of the gas cylinder, the upper end of the joint internal thread hole is provided with a guide groove downwards, the inner joint head is screwed to the outer joint head through the second outer connecting thread section on the upper column body, and the lower section of the circular plate is located in the guide groove.
The utility model has the advantages that: the connecting pipe is clamped in a sealing way by matching the inner adapter and the outer adapter, the metal bottle mouth is convenient to install, the metal bottle mouth and the plastic liner are reliably connected, and the connection reliability of the metal bottle mouth and the plastic liner is basically negligible under the influence of the modulus and the thermal expansion rate difference of metal and plastic materials; in addition, after the plastic liner fiber is fully wound on the gas cylinder to be filled, the high-pressure acting force of the high-pressure gas acts on the wall of the mounting hole, so that the outer side wall of the lower cylinder body is attached to the wall of the connecting pipe, and self-sealing is realized.
Drawings
Fig. 1 is a schematic structural diagram of a gas cylinder mouth structure with a plastic liner and fibers wound completely.
Fig. 2 is a partial structural view of the plastic inner container in fig. 1.
Fig. 3 is an exploded view of the metal finish.
Fig. 4 is an exploded internal structure diagram of the external connector and the internal adaptor shown in fig. 3.
Fig. 5 is a schematic structural view of the outer joint in a top view in fig. 3.
Fig. 6 is a schematic view of the inner bit shown in fig. 3 in a top view.
Fig. 7 is a partially enlarged schematic view of fig. 1.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1 and fig. 2, the structure of the cylinder mouth with the plastic liner and the fully wrapped fiber comprises: the metal bottle mouth 1 and the plastics inner bag 2, the inside recess in 21 tops of upper cover of plastics inner bag 2 forms embedded groove 22, is provided with outside protrusion in the middle part of embedded groove 22 and with the connecting pipe 23 of the 2 coaxial lines of plastics inner bag, connecting pipe 23 and the inner chamber intercommunication of plastics inner bag 2, and connecting pipe 23 and upper cover 21 integrated into one piece, be provided with first external connection screw thread section 24 on the outer pipe wall of connecting pipe 23. In this embodiment, the plastic inner container 2, the upper seal head 21, the lower seal head and the connecting pipe 23 are integrally formed by nylon blow molding.
As shown in fig. 2, the bottom of the insertion groove 22 in this embodiment is a circular plane 220, and the contour of the insertion groove 22 is a bowl-shaped contour that gradually expands outward from the bottom of the circular plane 220 and then smoothly transits to the outer contour of the upper head 21.
As shown in fig. 1, 3, 4 and 7, the metal bottle mouth 1 is composed of an outer joint 3 and an inner adapter 4, an insertion block 31 is arranged at the bottom of the outer joint 3, the bottom profile of the insertion block 31 is correspondingly matched with the profile of the insertion groove 22, and the insertion block 31 and the outer joint 3 can be integrally formed. The joint internal thread hole 32 of the outer joint 3 penetrates through the bottom surface of the embedded block 31 downwards, and the outer joint 3 is screwed on the connecting pipe 23 through the joint internal thread hole 32 and the first external connection thread section 24, so that the embedded block 31 is fixed in the embedded groove 22. After the embedded block 31 is fixed in the embedded groove 22, the top contour 310 of the embedded block 31 and the outer contour of the upper seal head 21 are spliced into a spherical surface. Wherein, the setting of embedded groove 22 not only is convenient for the subsequent location of outer joint 3 fixed, has still further strengthened the intensity of upper cover 21.
As shown in fig. 1, 3 and 7, the inner plug 4 is provided with a vertically penetrating mounting hole 41, and an upper portion of the mounting hole 41 is provided with an internal thread section 42 screwed to the connecting piece of the mouthpiece valve. The inner joint head 4 is formed by integrally forming an upper cylinder 43 and a lower cylinder 44 which are coaxial from top to bottom in sequence, a second external connecting thread section 45 matched with the joint internal thread hole 32 is arranged on the upper cylinder 43, the lower cylinder 44 is matched with the connecting pipe internal hole 25, the inner joint head 4 is screwed on the outer joint 3 through the second external connecting thread section 45 on the upper cylinder 43 and the joint internal thread hole 32, and the lower cylinder 44 extends into the connecting pipe internal hole 25 and clamps the connecting pipe 23 between the lower cylinder 44 and the joint internal thread hole 32. A first sealing structure is also provided between the lower cylinder 44 and the connecting tube bore 25. The first sealing structure is as follows: at least one first seal groove 46 is sequentially arranged on the lower column 44 from top to bottom at intervals, and first seal rings (the first seal ring is not shown in the figure, and the type of the first seal ring can be selected according to actual needs) are respectively arranged in each first seal groove 46.
In this embodiment, the horizontal plane of the lower end of the internal thread section 42 in the mounting hole 41 is higher than the horizontal plane of the upper end of the sealing structure, i.e. a certain distance H is left between the internal thread section 42 and the sealing structure. After the plastic liner fiber is completely wound on the gas cylinder for filling, the high-pressure acting force of the high-pressure gas acts on the wall of the mounting hole, so that the outer side wall of the lower cylinder 44 is attached to the wall of the connecting pipe, and self-sealing is realized.
As shown in fig. 5, the upper section of the outer joint 3 is a prism structure 30 protruding in the circumferential direction, the prism structure may be a regular hexagonal prism structure, and the arrangement of the prism structure 30 on the upper section of the outer joint 3 is convenient for an operator to screw the outer joint 3 onto the plastic inner container 2. As shown in fig. 6, a circular plate 40 is provided at the upper end of the upper column 43, the circular plate 40 is integrally formed with the upper column 43, and a pair of cutting stages 401 are symmetrically cut on the circular plate 40. The upper end of the joint internal thread hole 32 is provided with a guide groove 301 downwards, after the inner joint 4 is screwed on the outer joint 3 through the second outer connecting thread section 45 on the upper column 43 and the joint internal thread hole 32, the lower section of the circular plate 40 is embedded in the guide groove 301. The circular plate 40 is provided to facilitate the operator to screw the inner adapter 4 into the outer adapter 3.
For the sealing structure which needs to be added between the connecting piece of the bottleneck valve and the mounting hole 41, a second sealing structure can be further arranged in the mounting hole 41 between the horizontal plane of the lower end of the internal thread section 42 and the horizontal plane of the upper end of the sealing structure. The second sealing structure is as follows: at least one second seal groove 47 is sequentially arranged in the mounting hole 41 between the horizontal plane of the lower end of the internal thread section 42 and the horizontal plane of the upper end of the seal structure at intervals from top to bottom, and second seal rings (the second seal rings are not shown in the figure, and the types of the second seal rings can be selected according to actual requirements) are respectively arranged in the second seal grooves 47. The inner diameter of the mounting hole is set according to different pressure bottle mouth valves, and when the mounting hole is matched with a 70MPa bottle mouth valve, the inner diameter of the mounting hole is 1.5 inches (namely 33.34 millimeters).
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications or equivalent changes made in accordance with the technical spirit of the present invention are also within the scope of the present invention.
The utility model has the advantages that: the connecting pipe 23 is clamped in a sealing way by matching the inner adapter 4 and the outer adapter 3, the metal bottle mouth is convenient to install, the metal bottle mouth and the plastic liner are reliably connected, and the connection reliability of the metal bottle mouth and the plastic liner is basically negligible under the influence of the modulus and the thermal expansion rate difference of metal and plastic materials; in addition, after the plastic liner fiber is completely wound on the gas cylinder for filling, the high-pressure acting force of the high-pressure gas acts on the wall of the mounting hole, so that the outer side wall of the lower cylinder 44 is attached to the wall of the connecting pipe, and self-sealing is realized.
Claims (9)
1. Plastics inner bag fibre twines gas cylinder bottleneck structure entirely includes: metal bottleneck and plastics inner bag, its characterized in that: the top of the upper end enclosure of the plastic liner is recessed inwards to form an embedded groove, the middle part of the embedded groove is provided with a connecting pipe which protrudes outwards and is coaxial with the plastic liner, the connecting pipe is communicated with the inner cavity of the plastic liner, the connecting pipe and the upper end enclosure are integrally formed, and the outer wall of the connecting pipe is provided with a first outer connecting thread section; the metal bottle mouth consists of an outer joint and an inner adapter, an embedded block is arranged at the bottom of the outer joint, the profile of the bottom surface of the embedded block is correspondingly matched with the profile of the embedded groove, a joint internal thread hole in the outer joint downwards penetrates through the bottom surface of the embedded block, and the outer joint is screwed on the connecting pipe through the joint internal thread hole and the first external connecting thread section, so that the embedded block is fixed in the embedded groove; after the embedded block is fixed in the embedded groove, the top contour of the embedded block and the outer contour of the upper end enclosure are spliced into a spherical surface; an up-down through mounting hole is arranged in the inner joint head, and an internal thread section screwed with the connecting piece of the bottle mouth valve is arranged on the upper section of the mounting hole; the inner joint head is formed by integrally forming an upper cylinder body and a lower cylinder body which are coaxial from top to bottom, a second external connecting thread section matched with the joint internal thread hole is arranged on the upper cylinder body, the lower cylinder body is matched with the inner hole of the connecting pipe, the inner joint head is screwed on the external joint through the second external connecting thread section on the upper cylinder body and the joint internal thread hole, and the lower cylinder body extends into the inner hole of the connecting pipe and clamps the connecting pipe between the lower cylinder body and the joint internal thread hole; a first sealing structure is further arranged between the lower column body and the inner hole of the connecting pipe.
2. The plastic liner fiber fully-wound gas cylinder opening structure of claim 1, which is characterized in that: the first sealing structure is as follows: at least one first sealing groove is arranged on the lower column body from top to bottom at intervals in sequence, and a first sealing ring is respectively placed in each first sealing groove.
3. The plastic liner fiber fully-wound gas cylinder opening structure of claim 1, which is characterized in that: the bottom of the embedded groove is a circular plane, and the profile of the embedded groove is a bowl-shaped profile which gradually expands outwards from bottom to top from the edge of the circular plane and is in smooth transition connection with the outer profile of the upper end enclosure.
4. The plastic liner fiber fully-wrapped gas cylinder opening structure as claimed in claim 1, 2 or 3, characterized in that: the horizontal plane of the lower end of the internal thread section in the mounting hole is higher than the horizontal plane of the upper end of the sealing structure.
5. The plastic liner fiber fully-wound gas cylinder opening structure of claim 4, which is characterized in that: and a second sealing structure is arranged in the mounting hole between the horizontal plane of the lower end of the internal thread section and the horizontal plane of the upper end of the sealing structure.
6. The plastic liner fiber fully-wound gas cylinder opening structure of claim 5, which is characterized in that: the second sealing structure is as follows: at least one second sealing groove is arranged in the mounting hole between the horizontal plane where the lower end of the internal thread section is located and the horizontal plane where the upper end of the sealing structure is located at intervals from top to bottom, and second sealing rings are respectively placed in the second sealing grooves.
7. The plastic liner fiber fully-wound gas cylinder opening structure of claim 1, which is characterized in that: the upper section of the external connector is a prism structure protruding in the circumferential direction.
8. The plastic liner fiber fully-wound gas cylinder opening structure as claimed in claim 1 or 7, which is characterized in that: a circular plate is arranged at the upper end of the upper column body, the circular plate and the upper column body are integrally formed, and a pair of cutting platforms are symmetrically cut on the circular plate.
9. The plastic liner fiber fully-wound gas cylinder opening structure of claim 8, which is characterized in that: the upper end of the joint internal thread hole is downwards provided with a guide groove, the inner joint head is screwed on the outer joint head through the second outer connecting thread section on the upper column body, and the lower section of the circular plate is embedded in the guide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921963528.3U CN211260335U (en) | 2019-11-14 | 2019-11-14 | Gas cylinder mouth structure with plastic liner and fully-wound fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921963528.3U CN211260335U (en) | 2019-11-14 | 2019-11-14 | Gas cylinder mouth structure with plastic liner and fully-wound fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211260335U true CN211260335U (en) | 2020-08-14 |
Family
ID=71956142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921963528.3U Active CN211260335U (en) | 2019-11-14 | 2019-11-14 | Gas cylinder mouth structure with plastic liner and fully-wound fibers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211260335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848558A (en) * | 2019-11-14 | 2020-02-28 | 江苏国富氢能技术装备有限公司 | Gas cylinder mouth structure with plastic liner and fully-wound fibers |
-
2019
- 2019-11-14 CN CN201921963528.3U patent/CN211260335U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848558A (en) * | 2019-11-14 | 2020-02-28 | 江苏国富氢能技术装备有限公司 | Gas cylinder mouth structure with plastic liner and fully-wound fibers |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110925589A (en) | Gas cylinder with plastic liner and fully wound fibers | |
| CN110848558A (en) | Gas cylinder mouth structure with plastic liner and fully-wound fibers | |
| CN215981966U (en) | Bottleneck structure in plastic inner container carbon fiber full-winding gas cylinder | |
| WO2013008719A1 (en) | Pressure vessel | |
| CN212298516U (en) | Full-composite fiber winding gas cylinder opening structure | |
| CN211260335U (en) | Gas cylinder mouth structure with plastic liner and fully-wound fibers | |
| CN109751506A (en) | A kind of plastic inner container carbon fiber winds hydrogen storage cylinder entirely | |
| US20140272670A1 (en) | Method and apparatus for making a fuel storage tank with a liner and inner bag for a fuel storage system | |
| CN112762356A (en) | Sealing structure suitable for high-pressure plastic liner carbon fiber fully-wound gas cylinder and application | |
| CN210165179U (en) | Plastic liner fully-wound composite gas cylinder | |
| CN111649223A (en) | Composite hydrogen storage cylinder with plastic inner container | |
| CN213018861U (en) | Composite hydrogen storage cylinder with plastic inner container | |
| CN201487539U (en) | Liner mouth structure of carbon fiber fully-wrapped composite gas cylinder with aluminum liner of compressed hydrogen gas for vehicle | |
| CN113531383A (en) | High-pressure gas cylinder sealing structure | |
| CN217030783U (en) | Lining bottleneck seal structure of IV type gas cylinder | |
| CN209960209U (en) | High-pressure hydrogen storage tank inner container | |
| CN212298545U (en) | Compound gas cylinder bottleneck structure of fibre full winding plastics inner bag | |
| CN116379334A (en) | Sealing structure of valve seat of plastic liner and forming process thereof | |
| CN115949879A (en) | Gas cylinder with plastic liner and fully wound with fibers | |
| CN209893104U (en) | Carbon fiber fully-wound hydrogen storage cylinder with plastic liner | |
| CN216591027U (en) | Large-diameter stainless steel welding inner container carbon fiber full-winding bottle type container | |
| CN213954980U (en) | Metal joint of carbon fiber full-winding pressure gas cylinder | |
| CN114923121A (en) | Composite material hydrogen storage bottle mouth structure | |
| CN210800696U (en) | High-pressure hydrogen storage cylinder | |
| CN221035196U (en) | Inner container mouth structure of composite material gas cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 215600 No. 236, Guotai North Road, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: Jiangsu Guofu hydrogen energy technology equipment Co.,Ltd. Address before: Jiangsu Guofu hydrogen technology equipment Co., Ltd., No.19, Fuxin (Chenxin) road, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province, 215600 Patentee before: Jiangsu Guofu Hydrogen Energy Technology Equipment Co.,Ltd. |
|
| CP03 | Change of name, title or address |