CN221146183U - Storage device for storing hydrogen - Google Patents
Storage device for storing hydrogen Download PDFInfo
- Publication number
- CN221146183U CN221146183U CN202323145355.3U CN202323145355U CN221146183U CN 221146183 U CN221146183 U CN 221146183U CN 202323145355 U CN202323145355 U CN 202323145355U CN 221146183 U CN221146183 U CN 221146183U
- Authority
- CN
- China
- Prior art keywords
- bottle
- welding
- storage device
- valve seat
- welded portion
- 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.)
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- 238000003860 storage Methods 0.000 title claims abstract description 35
- 239000001257 hydrogen Substances 0.000 title claims abstract description 15
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims description 41
- 238000003466 welding Methods 0.000 claims abstract description 44
- 210000001503 joint Anatomy 0.000 claims abstract description 7
- 239000002861 polymer material Substances 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 5
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000007769 metal material Substances 0.000 description 4
- 238000003032 molecular docking Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000032798 delamination Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The application discloses a storage device for storing hydrogen, which comprises a bottle body and at least one valve seat, wherein the bottle body comprises a bottle body part and at least one bottle opening part, the bottle opening part is provided with a first connecting part and a second connecting part opposite to the first connecting part, the first connecting part forms a first opening and a first communication channel communicated with the first opening, the second connecting part forms a first butt joint cavity and a first pair of interfaces communicated with the first butt joint cavity, and the second connecting part of the bottle opening part forms a cylindrical first welding part at the first pair of interfaces; the bottle body part is provided with a straight cylinder part, the straight cylinder part is provided with an accommodating space and a first connecting port communicated with the accommodating space, the straight cylinder part forms a cylindrical second welding part at the first connecting port, the first welding part of the second connecting part of the bottle part is sleeved with the second welding part, the first welding part and the second welding part are welded in a laser welding mode, and the bottle part and the valve seat are mutually embedded in an integrated forming mode.
Description
Technical Field
The present invention relates to a storage device, and more particularly, to a storage device for storing hydrogen.
Background
At present, as renewable clean energy is becoming popular, hydrogen as a clean energy source material is widely used in various fields, for example, it can be applied to hydrogen-oxygen fuel cells. Because the molecular weight of hydrogen is lighter, and the hydrogen reacts with oxygen after encountering fire, explosion can occur. The existing hydrogen storage device is commonly an IV-type hydrogen storage cylinder. The type iv hydrogen storage cylinder generally comprises a cylinder body and a valve seat mounted at an opening of the cylinder body, wherein the valve seat is used for being connected with an external pipeline.
However, because the thermal expansion coefficient and the cold contraction coefficient between the valve seat made of metal materials and plastics are large, under the conditions of inflation and deflation of the high-pressure gas cylinder and environmental temperature change, temperature alternation in the cylinder can be caused, and then thermal stress exists on the joint surface of the metal valve seat and the plastic liner, layering risks exist for a long time, and sealing failure is caused. In order to solve the layering problem of the metal plastic joint surface, in the prior art, a connecting pressing piece is arranged between an opening part of a bottle body and a valve seat, the connecting pressing piece is connected with the valve seat at a bottle opening through threads, and a sealing ring is filled between the connecting pressing piece and the valve seat of the bottle opening, so that sealing is realized, and high-pressure gas is prevented from directly invading through the initial end part of the plastic metal joint surface to cause metal plastic layering. However, the connection of the screw-on pressure piece to the valve seat of the bottle mouth runs the risk of loosening in the event of prolonged vibrations.
If the sealing section at the opening of the bottle body connected with the valve seat is made of metal materials, such as aluminum alloy or stainless steel, the hydrogen embrittlement phenomenon still exists in the bottle body due to the existence of the metal materials of the sealing section.
In addition, there are ways of injection molding the bottle body on a metal valve seat in the prior art. However, after the length of the straight cylinder section in the middle of the IV-type hydrogen storage cylinder exceeds 0.9m, the draft angle can cause thicker wall thickness at the bottom and the plastic part at the thicker wall thickness position is easy to generate defects in molding, so that the length of the middle straight cylinder section in an injection molding mode needs to be limited below 0.9m, and the middle straight cylinder section cannot be manufactured to be more than 0.9 m.
Disclosure of Invention
An advantage of the present invention is to provide a storage device for hydrogen gas, wherein the length of the straight section formed by the storage device for hydrogen gas can be less than 0.9m and can exceed 0.9m.
To achieve at least one of the above advantages, the present invention provides a storage device for storing hydrogen gas, comprising:
The bottle body comprises a bottle body part and at least one bottle mouth part, wherein the bottle mouth part is provided with a first connecting part and a second connecting part opposite to the first connecting part, the first connecting part forms a first opening and a first communication channel communicated with the first opening, the second connecting part forms a first butt joint cavity and a first pair of interfaces communicated with the first butt joint cavity, and the second connecting part of the bottle mouth part forms a cylindrical first welding part at the first pair of interfaces; the bottle body part is provided with a straight cylinder part, wherein the straight cylinder part is provided with an accommodating space and a first connecting port communicated with the accommodating space, the straight cylinder part forms a cylindrical second welding part at the first connecting port, the first welding part of the second connecting part of the bottle opening part is sleeved with the second welding part, and the first welding part and the second welding part are welded in a laser welding mode;
At least one valve seat, wherein the bottle mouth part and the valve seat are mutually embedded in an integrated forming mode.
According to an embodiment of the present invention, the bottle mouth portion is integrally fitted with the valve seat by injection molding.
According to an embodiment of the present invention, the first welding portion of the second connecting portion of the finish portion is configured to be mutually sleeved with the second welding portion by interference fit.
According to one embodiment of the invention, the interference fit is 0.5mm to 1.5mm.
According to an embodiment of the present invention, the first welded portion has a larger cross-sectional dimension than the second welded portion, so that the second welded portion can be inserted into the first welded portion, which is made of a light-absorbing polymer material, and the first welded portion is made of a light-transmitting polymer material.
According to an embodiment of the present invention, the first welded portion is smaller in cross-sectional dimension than the second welded portion so that the first welded portion can be inserted into the second welded portion, the first welded portion being provided to be made of a light-absorbing polymer material, and the second welded portion being provided to be made of a light-transmitting polymer material.
According to an embodiment of the present invention, the straight tube portion of the body portion further has a bottom wall, wherein the bottom wall is used for closing an opening on the other side opposite to the first connection port.
According to an embodiment of the present invention, a second connection port is further provided on the other side of the straight tube portion of the body portion, the second connection port is in communication with the accommodating space, the straight tube portion forms a cylindrical third welding portion at the second connection port, the storage device for storing hydrogen gas includes two valve seats, the bottle body includes two bottle opening portions, one valve seat is disposed and connected with one bottle opening portion in an integrally formed manner, the other valve seat is disposed and connected with the other bottle opening portion in an integrally formed manner, and the second welding portion and the third welding portion at two ends of the straight tube portion are respectively welded and fixed with the first welding portion at a position corresponding to the one bottle opening portion in a laser welding manner.
According to an embodiment of the present invention, the first connecting portion of each of the bottle portions integrally extends to form a plurality of rotation stopping protrusions, and the rotation stopping protrusions are embedded in the valve seat after the bottle portion is integrally formed with the valve seat.
According to an embodiment of the present invention, the first connection portion of each of the bottle portions integrally extends to form a plurality of barb hooks, wherein the barb hooks are embedded in the valve seat after the bottle portion is integrally formed with the valve seat.
Drawings
Fig. 1 is a perspective view showing a first embodiment of a storage device for hydrogen gas according to the present invention.
Fig. 2 is a perspective view showing a second embodiment of the storage device for hydrogen gas according to the present invention.
Fig. 3 shows a cross-sectional view of a second embodiment of a storage device for storing hydrogen gas according to the present invention.
FIG. 4 shows a cross-sectional view of a portion of a joint of a second embodiment of a storage device for storing hydrogen gas according to the present invention
Fig. 5 shows an enlarged schematic view at a in fig. 3.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
Referring to fig. 1 to 5, a storage device for storing hydrogen gas according to a preferred embodiment of the present invention, which can be used for storing hydrogen gas, will be described in detail below.
The storage device for storing hydrogen gas includes a bottle body 10 and at least one valve seat 20, wherein the bottle body 10 includes a bottle body portion 11 and at least one bottle mouth portion 12, wherein the bottle mouth portion 12 has a first connection portion 121 and a second connection portion 122 opposite to the first connection portion 121, wherein the first connection portion 121 forms a first opening 12101 and a first communication channel 12102 communicating with the first opening 12101, wherein the second connection portion 122 forms a first docking chamber 12201 and a first docking port 12202 communicating with the first docking chamber 12201.
The mouth portion 12 and the valve seat 20 are fitted to each other by integral molding so that the valve seat 20 and the first connecting portion 121 are integrally connected. The second connecting portion 122 of the finish portion 12 forms a cylindrical first welded portion 1221 at the first butt joint 12202.
Preferably, the bottle mouth portion 12 and the valve seat 20 are integrally molded by injection molding, and the valve seat 20 is wrapped by the bottle mouth portion 12, so that the hydrogen embrittlement phenomenon caused by the stored hydrogen gas coming into contact with the valve seat 20 made of metal material when the hydrogen gas is stored in the storage device can be effectively prevented.
The body 11 has a straight tube 111, wherein the straight tube 111 has an accommodation space 11101 and a first connection port 11102 communicating with the accommodation space 11101. The straight tube portion 111 forms a cylindrical second welding portion 1111 at the first connection port 11102. The first welding part 1221 of the second connecting part 122 of the finish 12 is provided to be mutually socket-jointed with the second welding part 1111, so that the straight tube part 111 can be mutually socket-jointed with the second connecting part 122 of the finish 12, so that the accommodating space 11101 and the first docking chamber 12201 are mutually communicated to jointly form a space for accommodating the hydrogen gas. Preferably, the first welding part 1221 of the second connecting part 122 of the finish 12 is provided to be socket-coupled with the second welding part 1111 in interference fit with each other. Preferably, the interference fit is 0.5mm to 1.5mm.
It is noted that the first welded portion 1221 and the second welded portion 1111 are welded by means of laser welding.
In one embodiment, in another embodiment, the cross-sectional dimension of the first weld 1221 is greater than the cross-sectional dimension of the second weld 1111, thereby enabling the second weld 1111 to be inserted into the first weld 1221. Further, in the present embodiment, the second welding portion 1111 is provided to be made of a light-absorbing polymer material, and preferably, the entire straight tube portion 111 is provided to be made of a light-absorbing polymer material. Correspondingly, the first welded portion 1221 will be provided to be made of a light-transmitting polymer material, and also preferably, the entire finish portion 12 may be provided to be made of a light-transmitting polymer material.
As will be appreciated by those skilled in the art, by dividing the bottle body 10 into at least two parts and connecting the two parts by means of laser welding, not only the structure of the formed bottle body 10 can be kept stable, but also the length of the straight tube portion 111 of the bottle body 10 can be reduced, so that the length of the second connecting portion 122 of the bottle body 11 need only be extended during manufacturing, thereby reducing the length of the straight tube portion 111 of the bottle body 11, and further forming the storage device for storing hydrogen gas having a straight tube length exceeding 0.9 m.
As a modification, in one embodiment, the first welded portion 1221 has a smaller cross-sectional dimension than the second welded portion 1111, thereby enabling the first welded portion 1221 to be inserted into the second welded portion 1111. Further, in the present embodiment, the first welding part 1221 is provided to be made of a light-absorbing polymer material, and preferably, the entire finish part 12 may be provided to be made of a light-transmitting polymer material. Correspondingly, the second welding part 1111 will be made of a light-transmitting polymer material, and also preferably, the entire straight tube part 111 is made of a light-absorbing polymer material.
It should be noted that the first welded portion 1221 and/or the second welded portion 1111 may be made of PE, PA, PPS, or EVOH.
In one embodiment, the straight tube 111 of the body 11 further has a bottom wall 1112, wherein the bottom wall 1112 is configured to cover the opening on the other side opposite to the first connection opening 11102.
In another embodiment, the other side of the straight tube 111 of the body 11 further has a second connection opening 11103. The second connection port 11103 communicates with the accommodation space 11102, and the straight tube portion 111 forms a cylindrical third welded portion 1113 at the second connection port 11103. In the present embodiment, the storage device for storing hydrogen gas includes two valve seats 20, and the bottle body 10 includes two bottle mouth portions 12.
In the present embodiment, one of the valve seats 20 is provided to be connected to one of the bottle portions 12 by integral molding, and the other valve seat 20 is provided to be connected to the other of the bottle portions 12 by integral molding. Correspondingly, the second welded portion 1111 and the third welded portion 1113 at the two ends of the straight tube portion 111 are welded and fixed to the first welded portion 1221 at the corresponding position of one of the bottle mouth portions 12 by means of laser welding.
In this way, both ends of the storage device for hydrogen gas may be provided with the valve seats 20, so that both ends of the storage device for hydrogen gas can be docked with the outside.
Further, the first connection portion 121 of each of the finish portions 12 integrally extends to form a plurality of rotation stopping protrusions 13, and the rotation stopping protrusions 13 are fitted into the valve seat 20 after the finish portion 12 is integrally formed with the valve seat 20. After the finish portion 12 is integrally connected to the valve seat 20, the rotation preventing protrusion 13 can more firmly connect the valve seat 20 and the finish portion 12. The rotation stop protrusion 13 can prevent delamination between the valve seat 20 and the finish portion 12, particularly in the case of inflation and deflation and changes in ambient temperature.
Preferably, the rotation stopping protrusion 13 is disposed around the valve seat 20.
Further, the first connection portion 121 of each bottle mouth portion 12 integrally extends to form a plurality of barb hooks 14, wherein the barb hooks 14 are embedded in the valve seat 20 after the bottle mouth portion 12 is integrally formed with the valve seat 20. Specifically, the barb 14 extends obliquely from the side of the finish 12 in a direction closer to the axial direction, so that a more secure connection between the valve seat 20 and the finish 12 is ensured, and delamination between the valve seat 20 and the finish 12 is also avoided to some extent.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.
Claims (10)
1. A storage device for storing hydrogen gas, comprising:
The bottle body comprises a bottle body part and at least one bottle mouth part, wherein the bottle mouth part is provided with a first connecting part and a second connecting part opposite to the first connecting part, the first connecting part forms a first opening and a first communication channel communicated with the first opening, the second connecting part forms a first butt joint cavity and a first pair of interfaces communicated with the first butt joint cavity, and the second connecting part of the bottle mouth part forms a cylindrical first welding part at the first pair of interfaces; the bottle body part is provided with a straight cylinder part, wherein the straight cylinder part is provided with an accommodating space and a first connecting port communicated with the accommodating space, the straight cylinder part forms a cylindrical second welding part at the first connecting port, the first welding part of the second connecting part of the bottle opening part is sleeved with the second welding part, and the first welding part and the second welding part are welded in a laser welding mode;
At least one valve seat, wherein the bottle mouth part and the valve seat are mutually embedded in an integrated forming mode.
2. The storage device for storing hydrogen gas according to claim 1, wherein the mouth portion is integrally fitted with the valve seat by injection molding.
3. The storage device for storing hydrogen gas according to claim 1, wherein the first welded portion of the second connecting portion of the finish portion is provided to be mutually sleeved with the second welded portion by interference fit.
4. A storage device for storing hydrogen gas as claimed in claim 3 wherein the amount of interference fit is 0.5mm to 1.5mm.
5. The storage device for storing hydrogen gas according to any one of claims 1 to 4, wherein a cross-sectional dimension of the first welded portion is larger than a cross-sectional dimension of the second welded portion, so that the second welded portion can be inserted into the first welded portion, which is made of a polymer material that is provided to absorb light, and the first welded portion is to be provided to be made of a polymer material that is light-transmitting.
6. The storage device for storing hydrogen gas according to any one of claims 1 to 4, wherein a cross-sectional dimension of the first welded portion is smaller than a cross-sectional dimension of the second welded portion so that the first welded portion can be inserted into the second welded portion, the first welded portion being provided to be made of a light-absorbing polymer material, the second welded portion being provided to be made of a light-transmitting polymer material.
7. The storage device for hydrogen gas as defined in any one of claims 1 to 4 wherein said straight tubular portion of said body portion further has a bottom wall for closing an opening on the other side opposite said first connection port.
8. The storage device for storing hydrogen according to any one of claims 1 to 4, wherein a second connection port is further provided on the other side of the straight tube portion of the body portion, the second connection port communicates with the accommodating space, the straight tube portion forms a cylindrical third welding portion at the second connection port, the storage device for storing hydrogen includes two valve seats, the body includes two bottle opening portions, one valve seat is provided to be connected to one bottle opening portion by an integral molding manner, the other valve seat is provided to be connected to the other bottle opening portion by an integral molding manner, the second welding portions and the third welding portions at both ends of the straight tube portion are respectively welded and fixed to the first welding portions at positions corresponding to the one bottle opening portion by a laser welding manner.
9. The storage device for hydrogen gas as defined in any one of claims 1 to 4, wherein said first connecting portion of each of said bottle portions integrally extends to form a plurality of rotation stopping protrusions, said rotation stopping protrusions being embedded in said valve seat after said bottle portion is integrally formed with said valve seat.
10. The storage device for hydrogen gas as defined in any one of claims 1 to 4, wherein said first connection portion of each of said bottle portions integrally extends to form a plurality of barb hooks, wherein said barb hooks are embedded in said valve seat after said bottle portions are integrally formed with said valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323145355.3U CN221146183U (en) | 2023-11-22 | 2023-11-22 | Storage device for storing hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323145355.3U CN221146183U (en) | 2023-11-22 | 2023-11-22 | Storage device for storing hydrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221146183U true CN221146183U (en) | 2024-06-14 |
Family
ID=91388954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323145355.3U Active CN221146183U (en) | 2023-11-22 | 2023-11-22 | Storage device for storing hydrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221146183U (en) |
-
2023
- 2023-11-22 CN CN202323145355.3U patent/CN221146183U/en active Active
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