CN217843468U - Bottleneck structure of high-pressure gas cylinder - Google Patents
Bottleneck structure of high-pressure gas cylinder Download PDFInfo
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- CN217843468U CN217843468U CN202221808450.XU CN202221808450U CN217843468U CN 217843468 U CN217843468 U CN 217843468U CN 202221808450 U CN202221808450 U CN 202221808450U CN 217843468 U CN217843468 U CN 217843468U
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- valve seat
- slope
- annular valve
- sawtooth
- hollow annular
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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
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Abstract
The utility model relates to a bottleneck structure of a high-pressure gas cylinder, which comprises a hollow annular valve seat, wherein the inner wall surface of the hollow annular valve seat is fixedly connected with an inner container, and the outer wall surface of the hollow annular valve seat is contacted with a winding layer; the outer wall surface of the hollow annular valve seat is provided with a sawtooth group; the sawtooth groups comprise sawteeth with the same and/or different slope slopes. The fiber winding process is more convenient, the shear stress area at the bottom is increased, and the tensile force of the carbon fibers to the axial direction of the bottle mouth is enhanced, so that the axial stress born by the bottle mouth is enhanced.
Description
Technical Field
The utility model relates to a hydrogen storage equipment field especially relates to a bottleneck structure of gas cylinder.
Background
With the development of the carbon fiber fully-wound gas cylinder (hereinafter referred to as hydrogen storage cylinder) with the aluminum inner container of compressed hydrogen for vehicles, the high-pressure hydrogen storage cylinder is favored by more vehicles and factories due to the large hydrogen storage capacity and longer endurance mileage. The inner container of the hydrogen storage cylinder is of an aluminum alloy seamless structure, namely, is integrally formed, and the forming process generally comprises stamping, spinning, closing, bottle opening processing and the like. With the application of the 70MPa hydrogen storage cylinder, the original opening structure of the hydrogen storage cylinder cannot bear high pressure. Therefore, the strength of the bottle mouth is ensured by adding a bottle mouth reinforcing structure.
SUMMERY OF THE UTILITY MODEL
For solving the not enough of prior art, the utility model provides a high-pressure hydrogen cylinder's bottleneck structure through tensile stress and the shear stress that increases the bottleneck and can bear, guarantees that high-pressure hydrogen cylinder bottleneck intensity can satisfy the stress to bottleneck production under the gas cylinder minimum burst pressure, reinforcing bottleneck intensity.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a bottle mouth structure of a high-pressure gas bottle comprises a hollow annular valve seat, wherein the inner wall surface of the hollow annular valve seat is fixedly connected with an inner container, and the outer wall surface of the hollow annular valve seat is in contact with a winding layer;
the outer wall surface of the hollow annular valve seat is provided with a sawtooth group;
the sawtooth group comprises sawteeth with the same and/or different slope slopes.
Further, the sawtooth group at least comprises one sawtooth with an inclined plane slope of 40 degrees, one sawtooth with an inclined plane slope of 30 degrees and at least one sawtooth with an inclined plane slope of 15 degrees.
Further, the sawtooth group comprises a first sawtooth, a second sawtooth, a third sawtooth and a fourth sawtooth in sequence from the bottle shoulder to the bottle opening, wherein the slope of the inclined plane of the first sawtooth is 40 degrees, the slope of the inclined plane of the second sawtooth is 15 degrees, the slope of the inclined plane of the third sawtooth is 15 degrees, and the slope of the inclined plane of the fourth sawtooth is 30 degrees.
Further, the inner wall surface of the hollow annular valve seat is fixedly connected with the inner container, and the inner wall surface of the hollow annular valve seat is in interference fit with the outer wall surface of the inner container.
The utility model has the advantages that:
adopt a high pressure gas cylinder's bottleneck structure, through set up the different sawtooth of slope at the bottleneck, increase tensile stress and the shear stress that the bottleneck can bear, guarantee that high pressure hydrogen storage cylinder bottleneck intensity can satisfy the stress that produces the bottleneck under the gas cylinder minimum burst pressure, reinforcing bottleneck intensity.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of a bottle mouth structure of the high-pressure gas bottle of the present invention.
Fig. 2 is a schematic diagram of the structure of the hollow annular valve seat in the preferred embodiment of the structure of the opening of the high-pressure gas cylinder of the present invention. Description of the figure numbering: 1-winding layer, 2-hollow annular valve seat, 3-sawtooth group, 4-inner container, 5-first sawtooth, 6-second sawtooth, 7-third sawtooth, 8-fourth sawtooth and 9-slope gradient.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, the terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1, the structure of the preferred embodiment of the bottleneck structure of the high-pressure gas cylinder of the present invention is a schematic diagram, a bottleneck structure of the high-pressure gas cylinder, the bottleneck structure includes a hollow annular valve seat 2, an inner container 4 is fixedly connected to the inner wall surface of the hollow annular valve seat 2, and the outer wall surface of the hollow annular valve seat 2 contacts with a winding layer 1;
specifically, in this application embodiment, the internal wall face of cavity annular valve seat 2 with the outer wall face of inner bag 4 is interference fit, has guaranteed after the installation that unable manual rotation or pull out cavity annular valve seat 2 to increase the radial strength of bottleneck.
The outer wall surface of the hollow annular valve seat 2 is provided with a sawtooth group 3;
specifically, in the embodiment, the saw teeth group 3 includes saw teeth with the same and/or different slope slopes 9, for example, the saw teeth group includes at least one saw tooth with a slope of 40 °, one saw tooth with a slope of 30 ° and at least one saw tooth with a slope of 15 °.
Preferably, as shown in fig. 2, in the embodiment of the present application, the sawtooth group includes a first sawtooth 5, a second sawtooth 6, a third sawtooth 7, and a fourth sawtooth 8 in sequence from the bottle shoulder to the bottle mouth, where a slope of an inclined plane of the first sawtooth 5 is 40 °, a slope of an inclined plane of the second sawtooth 6 is 15 °, a slope of an inclined plane of the third sawtooth 7 is 15 °, and a slope of an inclined plane of the fourth sawtooth 8 is 30 °.
In the prior art, the slope of the inclined plane of the sawtooth in the sawtooth group is generally 30 degrees; through the sawtooth group that the sawtooth of inclined plane slope difference formed, when winding carbon fiber, more make things convenient for fibre winding technology, the shear stress area increase of bottom, axial pulling force that bottleneck and bottle shoulder juncture can be shared to sawtooth group 3, has strengthened the axial stress that the bottleneck structure can bear.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. The bottle mouth structure of the high-pressure gas bottle is characterized by comprising a hollow annular valve seat, wherein the inner wall surface of the hollow annular valve seat is fixedly connected with an inner container, and the outer wall surface of the hollow annular valve seat is contacted with a winding layer;
the outer wall surface of the hollow annular valve seat is provided with a sawtooth group;
the sawtooth groups comprise sawteeth with the same and/or different slope slopes.
2. The finish structure of claim 1, wherein the set of serrations includes at least one serration having a slope of 40 °, one serration having a slope of 30 °, and at least one serration having a slope of 15 °.
3. The port structure of a high pressure gas cylinder according to claim 2, wherein the serration group comprises a first serration, a second serration, a third serration, and a fourth serration in order from the shoulder to the port, wherein the slope of the inclined plane of the first saw tooth is 40 degrees, the slope of the inclined plane of the second saw tooth is 15 degrees, the slope of the inclined plane of the third saw tooth is 15 degrees, and the slope of the inclined plane of the fourth saw tooth is 30 degrees.
4. The opening structure of a high pressure gas cylinder according to claim 1, wherein an inner wall surface of the hollow annular valve seat is in interference fit with an outer wall surface of the inner container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221808450.XU CN217843468U (en) | 2022-07-14 | 2022-07-14 | Bottleneck structure of high-pressure gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221808450.XU CN217843468U (en) | 2022-07-14 | 2022-07-14 | Bottleneck structure of high-pressure gas cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217843468U true CN217843468U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221808450.XU Active CN217843468U (en) | 2022-07-14 | 2022-07-14 | Bottleneck structure of high-pressure gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217843468U (en) |
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2022
- 2022-07-14 CN CN202221808450.XU patent/CN217843468U/en active Active
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