CN215722525U - Joint structure for high-pressure hydrogen storage container - Google Patents
Joint structure for high-pressure hydrogen storage container Download PDFInfo
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- CN215722525U CN215722525U CN202121958509.9U CN202121958509U CN215722525U CN 215722525 U CN215722525 U CN 215722525U CN 202121958509 U CN202121958509 U CN 202121958509U CN 215722525 U CN215722525 U CN 215722525U
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- screw hole
- hydrogen storage
- annular sealing
- plug
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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 the field of hydrogen energy equipment, in particular to a joint structure for a high-pressure hydrogen storage container, which comprises a hydrogen storage tank joint seat, a plug and a compression nut; the hydrogen storage tank connector seat is provided with a screw hole, the bottom surface of the screw hole is provided with a through hole along the axis of the screw hole, and the side wall of the through hole, which is close to the screw hole, is provided with a first annular sealing slope; one end of the plug extends into the screw hole, a gap is formed between the outer wall of the plug and the inner wall of the screw hole, a second annular sealing slope surface abutting against the first annular sealing slope surface is arranged at one end of the plug, an included angle between the first annular sealing slope surface and the axis of the screw hole is larger than an included angle between the second annular sealing slope surface and the axis of the screw hole, and an annular clamping groove is formed in the outer wall of the plug; the compression nut is sleeved outside the plug. The joint structure for the high-pressure hydrogen storage container provided by the utility model has the advantages of high reliability and good durability.
Description
Technical Field
The utility model relates to the field of hydrogen energy equipment, in particular to a joint structure for a high-pressure hydrogen storage container.
Background
The most important problem influencing the operation safety of the high-pressure hydrogen storage tank for the hydrogen station is the joint tightness of the gas inlet and the gas outlet of the hydrogen storage tank. The traditional hydrogen station is mostly sealed by adopting a sealing threaded joint, once the pressure grade is improved, the reliability of the traditional hydrogen station is sharply reduced, and the long-term use of hydrogen storage equipment is not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a joint structure for a high-pressure hydrogen storage container with high reliability.
In order to solve the technical problems, the utility model adopts the technical scheme that: a joint structure for a high-pressure hydrogen storage container comprises a hydrogen storage tank joint seat, a plug and a compression nut;
the hydrogen storage tank connector seat is provided with a screw hole, the bottom surface of the screw hole is provided with a through hole along the axis of the screw hole, and the side wall of the through hole, which is close to the screw hole, is provided with a first annular sealing slope;
one end of the plug extends into the screw hole, a gap is formed between the outer wall of the plug and the inner wall of the screw hole, a second annular sealing slope surface abutting against the first annular sealing slope surface is arranged at one end of the plug, an included angle between the first annular sealing slope surface and the axis of the screw hole is larger than an included angle between the second annular sealing slope surface and the axis of the screw hole, and an annular clamping groove is formed in the outer wall of the plug;
the compression nut is sleeved outside the plug, the compression nut is clamped with the annular clamping groove, and the compression nut is in threaded fit with the screw hole.
In an alternative embodiment, the angle between the first annular sealing land and the axis of the screw hole and the angle between the second annular sealing land and the axis of the screw hole are both in the range of 45 ° to 75 °.
In an alternative embodiment, the angle between the first annular sealing land surface and the axis of the screw hole is 60 °, and the angle between the second annular sealing land surface and the axis of the screw hole is 59 °.
In an alternative embodiment, the cross-sectional shape of the ring-shaped clamping groove is square.
In an alternative embodiment, the bottom of the screw hole is provided with a tool withdrawal groove, and the outer wall of the hydrogen storage tank joint seat is provided with a leakage signal hole penetrating to the tool withdrawal groove.
In an alternative embodiment, both the inner wall of the threaded bore and the outer wall of the compression nut are provided with a lubricating coating.
The utility model has the beneficial effects that: the utility model provides a joint design for high pressure hydrogen storage container, it is domatic to process first annular seal at the opening part of the sealed hole of hydrogen storage tank joint seat, it is domatic to process the second annular seal at the tip of end cap, in the use, through rotating gland nut, can press the end cap to the through-hole along the axis of screw, because the domatic conical surface angle of first annular seal is greater than the domatic conical surface angle of second annular seal, consequently, reach sealed purpose through non-leakproofness screw thread and conical surface hard seal when between end cap and the hydrogen storage tank joint seat, adopt this kind of structure to have the reliability height, the advantage that the durability is good, adaptable pressure level is higher.
Drawings
FIG. 1 is a schematic structural view showing a joint structure for a high-pressure hydrogen storage vessel according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a hydrogen storage tank joint socket according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a compression nut according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of the plug according to the embodiment of the present invention;
description of reference numerals:
1. a hydrogen storage tank joint base; 11. A screw hole; 12. A through hole; 13. A first annular sealing ramp; 14. A tool withdrawal groove; 15. A leakage signal hole;
2. a plug; 21. A second annular sealing land; 22. An annular neck;
3. and (5) pressing the nut.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 4, a joint structure for a high-pressure hydrogen storage container according to the present invention includes a hydrogen storage tank joint seat, a plug, and a compression nut;
the hydrogen storage tank connector seat is provided with a screw hole, the bottom surface of the screw hole is provided with a through hole along the axis of the screw hole, and the side wall of the through hole, which is close to the screw hole, is provided with a first annular sealing slope;
one end of the plug extends into the screw hole, a gap is formed between the outer wall of the plug and the inner wall of the screw hole, a second annular sealing slope surface abutting against the first annular sealing slope surface is arranged at one end of the plug, an included angle between the first annular sealing slope surface and the axis of the screw hole is larger than an included angle between the second annular sealing slope surface and the axis of the screw hole, and an annular clamping groove is formed in the outer wall of the plug;
the compression nut is sleeved outside the plug, the compression nut is clamped with the annular clamping groove, and the compression nut is in threaded fit with the screw hole.
From the above description, the beneficial effects of the present invention are: the utility model provides a joint design for high pressure hydrogen storage container, it is domatic to process first annular seal at the opening part of the sealed hole of hydrogen storage tank joint seat, it is domatic to process out the second annular seal at the tip of end cap, in the use, through rotating gland nut, can press the end cap to the through-hole along the axis of screw, because the domatic conical surface angle of first annular seal is greater than the domatic conical surface angle of second annular seal, consequently, reach sealed purpose through non-leakproofness screw thread and conical surface hard seal when between end cap and the hydrogen storage tank joint seat, adopt this kind of structure to have the reliability high, the advantage that the durability is good.
Further, the included angle range between the first annular sealing slope surface and the axis of the screw hole and the included angle range between the second annular sealing slope surface and the axis of the screw hole are both 45-75 degrees.
From the above description, it can be known that the non-sealing structure is adopted, so that the use requirement of pressure grade is met, the use characteristic of hydrogen is also met, and the safety and the reliability are realized.
Further, the included angle between the first annular sealing slope surface and the axis of the screw hole is 60 degrees, and the included angle between the second annular sealing slope surface and the axis of the screw hole is 59 degrees.
Furthermore, the section of the annular clamping groove is square.
As can be known from the description, the annular clamping groove is clamped and abutted to the part with the square cross section, so that the structural stability is higher, and the centering performance is better.
Furthermore, a tool withdrawal groove is formed in the bottom of the screw hole, and a leakage signal hole penetrating through the tool withdrawal groove is formed in the outer wall of the hydrogen storage tank joint seat.
From the above description, the leak signal hole is used to check the tightness of both conical surfaces.
Furthermore, the inner wall of the screw hole and the outer wall of the compression nut are both provided with lubricating coatings.
As can be seen from the above description, the lubricating coating functions to protect lubrication, improve assembly efficiency, and durability in use.
Referring to fig. 1 to 4, a first embodiment of the present invention is: a joint structure for a high-pressure hydrogen storage container comprises a hydrogen storage tank joint seat 1, a plug 2 and a compression nut 3;
the hydrogen storage tank connector seat 1 is provided with a screw hole 11, the bottom surface of the screw hole 11 is provided with a through hole 12 along the axis of the screw hole 11, and the side wall of the through hole 12 close to the screw hole 11 is provided with a first annular sealing slope 13;
one end of the plug 2 extends into the screw hole 11, a gap is formed between the outer wall of the plug 2 and the inner wall of the screw hole 11, a second annular sealing slope surface 21 abutting against the first annular sealing slope surface 13 is arranged at one end of the plug 2, the included angle between the first annular sealing slope surface 13 and the axis of the screw hole 11 is larger than the included angle between the second annular sealing slope surface 21 and the axis of the screw hole 11, and an annular clamping groove 22 is formed in the outer wall of the plug 2;
the 3 sleeves of the compression nut are arranged outside the plug 2, the compression nut 3 is clamped with the annular clamping groove 22, and the compression nut 3 is in threaded fit with the screw hole 11.
The hydrogen storage tank connector base 1 is made of 316L IV-grade forged piece materials, the plug 2 is made of 316L round steel materials, and the compression nut 3 is made of 316L round steel materials. The machining precision of the first annular sealing slope surface 13 and the second annular sealing slope surface 21 reaches 0.4; the first annular sealing slope surface 13 allows positive deviation of 0-1 degrees, and the second annular sealing slope surface 21 allows negative deviation of-1-0 degrees, so that the sealing component can be suitable for hydrogen energy equipment for a long time.
The included angle range between the first annular sealing slope surface 13 and the axis of the screw hole 11 and the included angle range between the second annular sealing slope surface 21 and the axis of the screw hole 11 are both 45-75 degrees. The cross section of the ring-shaped clamping groove 22 is square. The bottom of the screw hole 11 is provided with a tool withdrawal groove 14, the diameter of the tool withdrawal groove 14 is 2mm, and the outer wall of the hydrogen storage tank connector base 1 is provided with a leakage signal hole 15 penetrating through the tool withdrawal groove 14. And the inner wall of the screw hole 11 and the outer wall of the compression nut 3 are both provided with lubricating coatings.
Referring to fig. 1 to 4, a second embodiment of the present invention is different from the first embodiment in that: the included angle between the first annular sealing slope surface 13 and the axis of the screw hole 11 is 60 degrees, and the included angle between the second annular sealing slope surface 21 and the axis of the screw hole 11 is 59 degrees.
In summary, the present invention provides a joint structure for a high pressure hydrogen storage container, wherein a first annular sealing slope is formed at an opening of a sealing hole of a hydrogen storage tank joint seat, and a second annular sealing slope is formed at an end of a plug. The non-sealing structure is adopted, so that the pressure grade using requirement is met, the using characteristic of hydrogen is also met, and the safety and the reliability are realized. The ring groove adopts the joint of square cross section to lean on the position, and structural stability is higher, and centering nature is better. The leak signal hole is used to check the two cone seals. The lubricating coating plays a role in lubricating protection, improving assembly efficiency and durability in use.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (6)
1. A joint structure for a high-pressure hydrogen storage container is characterized by comprising a hydrogen storage tank joint seat, a plug and a compression nut;
the hydrogen storage tank connector seat is provided with a screw hole, the bottom surface of the screw hole is provided with a through hole along the axis of the screw hole, and the side wall of the through hole, which is close to the screw hole, is provided with a first annular sealing slope;
one end of the plug extends into the screw hole, a gap is formed between the outer wall of the plug and the inner wall of the screw hole, a second annular sealing slope surface abutting against the first annular sealing slope surface is arranged at one end of the plug, an included angle between the first annular sealing slope surface and the axis of the screw hole is larger than an included angle between the second annular sealing slope surface and the axis of the screw hole, and an annular clamping groove is formed in the outer wall of the plug;
the compression nut is sleeved outside the plug, the compression nut is clamped with the annular clamping groove, and the compression nut is in threaded fit with the screw hole.
2. The joint structure for a high-pressure hydrogen storage container according to claim 1, wherein the angle between the first annular sealing slope surface and the axis of the screw hole and the angle between the second annular sealing slope surface and the axis of the screw hole are both in the range of 45 ° to 75 °.
3. The coupling structure for a high-pressure hydrogen storage vessel of claim 2, wherein the angle between the first annular sealing land and the axis of the screw hole is 60 °, and the angle between the second annular sealing land and the axis of the screw hole is 59 °.
4. The joint structure for a high-pressure hydrogen storage container as claimed in claim 1, wherein the cross-sectional shape of the ring-shaped groove is square.
5. The joint structure for a high-pressure hydrogen storage container as claimed in claim 1, wherein a relief groove is formed at the bottom of the screw hole, and a leakage signal hole penetrating to the relief groove is formed in an outer wall of the hydrogen storage tank joint socket.
6. The joint structure for a high-pressure hydrogen storage container according to claim 1, wherein an inner wall of the screw hole and an outer wall of the compression nut are each provided with a lubricating coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121958509.9U CN215722525U (en) | 2021-08-19 | 2021-08-19 | Joint structure for high-pressure hydrogen storage container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121958509.9U CN215722525U (en) | 2021-08-19 | 2021-08-19 | Joint structure for high-pressure hydrogen storage container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215722525U true CN215722525U (en) | 2022-02-01 |
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ID=79998739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121958509.9U Active CN215722525U (en) | 2021-08-19 | 2021-08-19 | Joint structure for high-pressure hydrogen storage container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215722525U (en) |
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2021
- 2021-08-19 CN CN202121958509.9U patent/CN215722525U/en active Active
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