Electrolytic tank pressing structure and electrolytic tank
By installing a spring and sleeve on the outside of the electrolytic cell body, the spring is isolated from the external environment, which solves the problem of shortened service life of the spring due to corrosion, and improves the durability of the spring and the sealing of the electrolytic cell.
Patent Information
- Application Number
- CN202422839985.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-11-21
AI Technical Summary
The springs in existing electrolytic cells are corroded due to exposure to the external environment, resulting in a shortened service life.
A spring is installed on the outside of the electrolytic cell body, and a sleeve is placed over the spring to isolate the spring from the external environment and reduce direct contact with moisture and oxygen.
This extends the service life of the springs and improves the sealing performance of the electrolytic cell and the overall structural durability.
Smart Images
Figure CN223793245U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrolytic cell technology, and more specifically, to an electrolytic cell clamping structure and an electrolytic cell. Background Technology
[0002] Electrolyzers are one of the most commonly used hydrogen production devices. Among the many types of electrolyzers, PEM electrolyzers are widely used due to their high efficiency, safety, and other advantages. In PEM electrolyzers, a clamping structure is typically installed on the cell body to ensure its airtightness.
[0003] Current clamping structures often include springs, but springs can be corroded due to excessive exposure to the external environment, thus affecting their service life. Utility Model Content
[0004] The problem this invention addresses is: how to reduce the corrosion of springs in order to extend their service life.
[0005] To solve the above problems, this utility model provides an electrolytic cell clamping structure and an electrolytic cell.
[0006] In a first aspect, this utility model provides an electrolytic cell clamping structure, including a spring and a sleeve. The spring is used to be disposed on the outside of the electrolytic cell body and to provide clamping force to the electrolytic cell body, and the sleeve is sleeved on the outside of the spring.
[0007] Optionally, the inner diameter of the sleeve is larger than the outer diameter of the spring when it is at its maximum compression.
[0008] Optionally, the device further includes a connecting rod and a fastener, wherein the connecting rod passes through the electrolytic cell body and extends out of the electrolytic cell body, the spring is sleeved on the connecting rod, and the fastener is provided on the connecting rod and drives the spring to press against the electrolytic cell body.
[0009] Optionally, it further includes a first pressure plate sleeved on the connecting rod, the first pressure plate being located between the spring and the fastener, with both ends of the first pressure plate abutting against the spring and the fastener respectively.
[0010] Optionally, one end of the sleeve abuts against the electrolytic cell body, and the other end abuts against the first pressure plate.
[0011] Optionally, the maximum size of the first pressure plate is greater than the inner diameter of the sleeve.
[0012] Optionally, it further includes a second pressure plate sleeved on the connecting rod, the second pressure plate being located between the spring and the electrolytic cell body, and the outer peripheral wall of the second pressure plate contacting the inner wall of the sleeve.
[0013] Optionally, the second pressure plate has an annular cross-section, and the outer diameter of the second pressure plate is equal to the inner diameter of the sleeve.
[0014] Optionally, the fastener includes a first fastening sleeve and a second fastening sleeve that are threadedly connected to the connecting rod, and the adjacent ends of the first fastening sleeve and the second fastening sleeve abut against each other.
[0015] Secondly, this utility model provides an electrolytic cell, including an electrolytic cell body and an electrolytic cell clamping structure as described above.
[0016] The beneficial effects of the electrolytic cell clamping structure of this utility model are: the spring can be set on the outside of the electrolytic cell body and provide clamping force to the electrolytic cell body, thereby clamping the electrolytic cell body; and by putting the sleeve on the outside of the spring, the spring can be at least partially isolated from the external environment, avoiding the spring from being completely exposed to the external environment, reducing the direct contact between the spring and external moisture and oxygen, improving the corrosion phenomenon, and thus extending the service life. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the electrolytic cell according to an embodiment of the present invention;
[0018] Figure 2 This is a top view of the electrolytic cell according to an embodiment of the present invention;
[0019] Figure 3 for Figure 2 Cross-sectional view of the electrolytic cell along line AA;
[0020] Figure 4 for Figure 3 Enlarged schematic diagram of part B of the electrolytic cell;
[0021] Figure 5 This is a side view of the electrolytic cell according to an embodiment of the present invention.
[0022] Explanation of reference numerals in the attached figures:
[0023] 10. Electrolytic cell clamping structure; 11. Spring; 12. Sleeve; 13. Connecting rod; 14. Fastener; 141. First fastening sleeve; 142. Second fastening sleeve; 15. First pressure plate; 16. Second pressure plate; 20. Electrolytic cell body; 21. End plate; 22. Seal. Detailed Implementation
[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.
[0025] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing up and the negative direction representing down. The X-axis represents the horizontal direction and is designated as the front and back position, with the positive direction of the X-axis representing the front and the negative direction representing the back. The Y-axis represents the left and right position, with the positive direction of the Y-axis representing the left and the negative direction representing the right. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.
[0027] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0028] In related technologies, if the springs of the electrolytic cell clamping structure are exposed to the external environment, they will come into direct contact with moisture, oxygen, etc. in the external environment, and the surface will corrode, thus forming erosion.
[0029] To address the problems existing in the aforementioned related technologies, this utility model provides an electrolytic cell clamping structure and an electrolytic cell to reduce the corrosion of the springs, thereby extending their service life. A detailed description is provided below with reference to specific embodiments.
[0030] like Figure 1 , Figure 2 and Figure 4 As shown in the figure, an electrolytic cell clamping structure provided by this utility model includes a spring 11 and a sleeve 12. The spring 11 is used to be disposed on the outside of the electrolytic cell body 20 and to provide clamping force to the electrolytic cell body 20. The sleeve 12 is sleeved on the outside of the spring 11.
[0031] It should be noted that this utility model does not limit the specific installation method of the spring 11 on the electrolytic cell body 20. For example, using the connecting rod 13 scheme described below, the spring 11 is sleeved on the connecting rod 13. After the spring 11 is compressed, it can provide a clamping force to the electrolytic cell body 20 to press the electrolytic cell body 20. In addition, this utility model does not limit the specific type of spring 11. For example, a butterfly spring 11, a helical spring 11, etc. can be used.
[0032] In this embodiment, the spring 11 can be disposed on the outside of the electrolytic cell body 20 and provide a clamping force to the electrolytic cell body 20, thereby clamping the electrolytic cell body 20. By sleeve 12 over the spring 11, the spring 11 can be at least partially isolated from the external environment, preventing the spring 11 from being completely exposed to the external environment, reducing direct contact between the spring 11 and external moisture and oxygen, improving corrosion, and thus extending service life.
[0033] Optionally, such as Figure 4 As shown, the inner diameter of the sleeve 12 is larger than the outer diameter of the spring 11 when it is at its maximum compression.
[0034] In this optional embodiment, since the sleeve 12 surrounds the outside of the spring 11, the compression deformation of the spring 11 is confined inside the sleeve 12. By making the inner diameter of the sleeve 12 larger than the outer diameter of the spring 11 when it is at its maximum compression, the spring 11 is ensured to have sufficient compression deformation space, and the inner wall of the sleeve 12 is prevented from forming an obstruction with the compressed spring 11, so that the spring 11 can be compressed.
[0035] Optionally, such as Figure 3 and Figure 4 As shown, the electrolytic cell clamping structure also includes a connecting rod 13 and a fastener 14. The connecting rod 13 passes through the electrolytic cell body 20 and extends out of the electrolytic cell body 20. The spring 11 is sleeved on the connecting rod 13. The fastener 14 is provided on the connecting rod 13 and drives the spring 11 to clamp the electrolytic cell body 20.
[0036] It should be noted that this utility model does not limit the specific connection method of the fastener 14 on the connecting rod 13. For example, the fastener 14 and the connecting rod 13 can be threaded together, or the fastener 14 and the connecting rod 13 can be snapped together.
[0037] The connecting rod 13 can be a bolt. The head of the bolt is located on the side of the electrolytic cell body 20 away from the spring 11. The shank of the bolt passes through the electrolytic cell body 20 and the spring 11 in sequence and extends out of the spring 11. The fastener 14 is connected to one end of the shank that extends out of the spring 11. In this way, when the fastener 14 is installed on the bolt, the electrolytic cell body 20 and the spring 11 are limited between the bolt head and the fastener 14. The compressed spring 11 can press the electrolytic cell body 20.
[0038] It should also be noted that the spring 11 can directly abut against the electrolytic cell body 20 to press the electrolytic cell body 20, and the spring 11 can also abut against the electrolytic cell body 20 through the second pressure plate 16 described below to press the electrolytic cell body 20, which is not limited here.
[0039] In this optional embodiment, by passing the connecting rod 13 through the electrolytic cell body 20 and extending it out of the electrolytic cell body 20, the spring 11 is sleeved on the connecting rod 13, and the fastener 14 is provided on the connecting rod 13 and drives the spring 11 to press against the electrolytic cell body 20. In this way, the spring 11 can be fixed between the fastener 14 and the electrolytic cell body 20 by using the fastener 14, thereby ensuring the compressed state of the spring 11 and providing a stable clamping force to the electrolytic cell body 20.
[0040] Optionally, such as Figure 4 As shown, the electrolytic cell clamping structure further includes a first pressure plate 15 sleeved on the connecting rod 13. The first pressure plate 15 is located between the spring 11 and the fastener 14, and the two ends of the first pressure plate 15 abut against the spring 11 and the fastener 14 respectively.
[0041] In this optional embodiment, by having the two ends of the first pressure plate 15 abut against the spring 11 and the fastener 14 respectively, the fastener 14 can compress the spring 11 through the first pressure plate 15, so that the spring 11 presses against the electrolytic cell body 20, ensuring that the spring 11 is stably in a compressed state, which is beneficial to ensuring the pressing effect on the electrolytic cell body 20.
[0042] Optionally, such as Figure 4 As shown, one end of the sleeve 12 abuts against the electrolytic cell body 20, and the other end abuts against the first pressure plate 15.
[0043] like Figure 3As shown, the electrolytic cell body 20 typically consists of components such as two end plates 21 and a sealing element 22 disposed between the two end plates 21. When the electrolytic cell body 20 is pressed by the spring 11, the sealing element 22 can be pressed by the two end plates 21 to achieve the sealing of the electrolytic cell body 20. However, when the electrolytic cell body 20 is running under high pressure, the pressure formed inside the electrolytic cell body 20 may be transmitted to the spring 11 in greater quantities, thereby changing the compression state of the spring 11 and causing the end plates 21 to shift, resulting in a deterioration in the sealing effect of the electrolytic cell body 20. In this optional embodiment, since one end of the sleeve 12 abuts against the electrolytic cell body 20 and the other end abuts against the first pressure plate 15, when the electrolytic cell body 20 is running under high pressure, more of the pressure formed inside the electrolytic cell body 20 will be transmitted to the first pressure plate 15 through the sleeve 12, thereby bypassing the spring 11 and avoiding the change in the compression state of the spring 11 due to all the pressure flowing through it. This can prevent the end plates 21 from shifting and thus improve the sealing effect of the electrolytic cell body 20. In addition, since the other end of the sleeve 12 abuts against the first pressure plate 15, the first pressure plate 15 can seal the other end of the sleeve 12, so as to better isolate the spring 11 inside the sleeve 12, thereby more effectively reducing the corrosion of the spring 11 and extending its service life. In addition, the electrolytic cell body 20 may also experience sealing failure during operation. Specifically, when the spring 11 is compressed and generates excessive preload, the spring 11 will provide the electrolytic cell body 20 with excessive clamping force. Under the long-term high pressure, the seal 22 of the electrolytic cell body 20 will undergo permanent plastic deformation and lose its sealing ability, thus causing sealing failure. In this optional embodiment, since the other end of the sleeve 12 abuts against the first pressure plate 15, when the first pressure plate 15 is pushed and the spring 11 is compressed, the first pressure plate 15 will move axially along the connecting rod 13. The sleeve 12 will block the first pressure plate 15 when it moves into place, thereby preventing the spring 11 from being over-compressed and generating excessive preload, and thus preventing the seal 22 from failing due to long-term high pressure.
[0044] Optionally, such as Figure 4 As shown, the maximum size of the first pressure plate 15 is greater than the inner diameter of the sleeve 12.
[0045] It should be noted that there are no restrictions on the cross-sectional shape of the first pressure plate 15; for example, it can be annular or square with internal holes. It should also be noted that the maximum dimension of the first pressure plate 15 refers to the maximum dimension of the first pressure plate 15 along its surface. For example, when the cross-section of the first pressure plate 15 is annular, its outer diameter is its maximum dimension.
[0046] In this optional embodiment, the maximum size of the first pressure plate 15 is greater than the inner diameter of the sleeve 12. This ensures the contact effect between the first pressure plate 15 and the sleeve 12, and also improves the overall aesthetics of the electrolytic cell clamping structure.
[0047] Optionally, such as Figure 4 As shown, the electrolytic cell clamping structure further includes a second pressure plate 16 sleeved on the connecting rod 13. The second pressure plate 16 is located between the spring 11 and the electrolytic cell body 20, and the outer peripheral wall of the second pressure plate 16 is in contact with the inner wall of the sleeve 12.
[0048] In this optional embodiment, due to the presence of the second pressure plate 16, when installing the electrolytic cell clamping structure, the second pressure plate 16 can be first fitted onto the connecting rod 13, then the spring 11 can be fitted onto the connecting rod 13, and finally the sleeve 12 can be fitted onto both the second pressure plate 16 and the spring 11. By utilizing the contact between the inner wall of the sleeve 12 and the outer peripheral wall of the second pressure plate 16, the sleeve 12 can be positioned on the connecting rod 13, thereby improving the overall installation accuracy of the electrolytic cell clamping structure.
[0049] Optionally, such as Figure 4 As shown, the second pressure plate 16 is annular, and the outer diameter of the second pressure plate 16 is equal to the inner diameter of the sleeve 12.
[0050] In this optional embodiment, since the outer diameter of the second pressure plate 16 is equal to the inner diameter of the sleeve 12, when the sleeve 12 is fitted onto the second pressure plate 16, the outer peripheral wall of the second pressure plate 16 can provide a uniform circumferential positioning effect on the sleeve 12, reducing the positioning deviation of the sleeve 12 and improving the positioning accuracy of the sleeve 12 on the connecting rod 13.
[0051] Optionally, such as Figure 4 and Figure 5 As shown, the fastener 14 includes a first fastening sleeve 141 and a second fastening sleeve 142 that are threadedly connected to the connecting rod 13, and the adjacent ends of the first fastening sleeve 141 and the second fastening sleeve 142 abut against each other.
[0052] In this optional embodiment, since the first fastening sleeve 141 and the second fastening sleeve 142 abut against each other, when the first fastening sleeve 141 or the second fastening sleeve 142 is subjected to external force, a certain frictional force will be generated between the first fastening sleeve 141 and the second fastening sleeve 142 to prevent the first fastening sleeve 141 or the second fastening sleeve 142 from loosening on the connecting rod 13, thereby preventing the spring 11 from loosening, which is beneficial to ensure that the electrolytic cell clamping structure forms a stable clamping force on the electrolytic cell body 20.
[0053] like Figure 1 As shown in the figure, an electrolytic cell provided in this embodiment of the present invention includes an electrolytic cell body 20 and an electrolytic cell clamping structure 10 as described above.
[0054] The electrolytic cell can be a PEM electrolytic cell. It should be noted that this utility model does not limit the specific number of electrolytic cell clamping structures 10, which can be one or more, preferably multiple. Multiple electrolytic cell clamping structures 10 can generate better clamping force on the electrolytic cell body 20. Specifically, in this embodiment, the number of electrolytic cell clamping structures 10 is ten.
[0055] In this embodiment, since the electrolytic cell includes the electrolytic cell clamping structure described above, it has all the beneficial effects brought by all embodiments of the electrolytic cell clamping structure described above, which will not be repeated here.
[0056] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.
Claims
1. An electrolytic cell clamping structure, characterized in that, The device includes a spring (11), a sleeve (12), a connecting rod (13), and a fastener (14). The spring (11) is positioned on the outside of the electrolytic cell body (20) and provides a clamping force to the electrolytic cell body (20). The sleeve (12) is fitted over the spring (11). The connecting rod (13) passes through the electrolytic cell body (20) and extends out of the electrolytic cell body (20). The spring (11) is fitted over the connecting rod (13). The fastener (14) is positioned on the connecting rod (13) and drives the spring (11) to press against the electrolytic cell body (20).
2. The electrolytic cell clamping structure according to claim 1, characterized in that, The inner diameter of the sleeve (12) is greater than the outer diameter of the spring (11) when it is at its maximum compression.
3. The electrolytic cell clamping structure according to claim 1, characterized in that, It also includes a first pressure plate (15) sleeved on the connecting rod (13), the first pressure plate (15) being located between the spring (11) and the fastener (14), with the two ends of the first pressure plate (15) abutting against the spring (11) and the fastener (14) respectively.
4. The electrolytic cell clamping structure according to claim 3, characterized in that, One end of the sleeve (12) abuts against the electrolytic cell body (20), and the other end abuts against the first pressure plate (15).
5. The electrolytic cell clamping structure according to claim 4, characterized in that, The maximum size of the first pressure plate (15) is greater than the inner diameter of the sleeve (12).
6. The electrolytic cell clamping structure according to claim 1, characterized in that, It also includes a second pressure plate (16) sleeved on the connecting rod (13), the second pressure plate (16) being located between the spring (11) and the electrolytic cell body (20), and the outer peripheral wall of the second pressure plate (16) contacting the inner wall of the sleeve (12).
7. The electrolytic cell clamping structure according to claim 6, characterized in that, The second pressure plate (16) has an annular cross-section, and the outer diameter of the second pressure plate (16) is equal to the inner diameter of the sleeve (12).
8. The electrolytic cell clamping structure according to claim 1, characterized in that, The fastener (14) includes a first fastening sleeve (141) and a second fastening sleeve (142) that are threadedly connected to the connecting rod (13), and the adjacent ends of the first fastening sleeve (141) and the second fastening sleeve (142) abut against each other.
9. An electrolytic cell, characterized in that, It includes an electrolytic cell body (20) and an electrolytic cell clamping structure (10) as described in any one of claims 1-8.