End plate of electrolytic bath and electrolytic bath

Abstract

The utility model discloses an end plate of an electrolytic bath and the electrolytic bath, and relates to the technical field of electrolysis. The end plate of the electrolytic cell comprises an outer frame and reinforcing ribs, the outer frame is provided with a hollow hole, and the hollow hole penetrates through the two opposite side faces of the outer frame; the reinforcing ribs are at least partially arranged in the hollow holes and are connected with the outer frame; according to the technical scheme, the technical effect of reducing the weight of the end plate of the electrolytic cell can be achieved.

Description

Technical Field

[0001] This application relates to the field of electrolysis technology, and particularly to an end plate of an electrolytic cell and an electrolytic cell. Background Art

[0002] With the development of demand, the technology of hydrogen production by electrolyzing water has been increasingly applied, and thus a large number of electrolytic cells have emerged. The end plate of the electrolytic cell determines the total mass and volume of the electrolytic cell. However, the end plate of the traditional electrolytic cell is relatively heavy, which is not convenient for hoisting and transportation. Summary of the Utility Model

[0003] The main purpose of this application is to propose an end plate of an electrolytic cell and an electrolytic cell, aiming to reduce the weight of the end plate of the electrolytic cell.

[0004] To achieve the above object, the end plate of the electrolytic cell proposed in this application includes an outer frame and reinforcing ribs. The outer frame has a hollow hole that penetrates through opposite side surfaces of the outer frame; at least part of the reinforcing ribs are disposed in the hollow hole and are connected to the outer frame.

[0005] In one embodiment, the outer frame includes:

[0006] An annular frame body that has the hollow hole; and

[0007] A support portion that is connected to the annular frame body and extends away from the hollow hole.

[0008] In one embodiment, the support portion is a support plate, and one side of the support plate away from the hollow hole has a support surface, and the support surface is a flat surface.

[0009] In one embodiment, a groove is formed on the support plate.

[0010] In one embodiment, the groove is recessed from one side of the support plate away from the hollow hole toward the side close to the hollow hole.

[0011] In one embodiment, a connecting portion is provided on the outer frame, and the connecting portion is used to connect to the electrode plate of the electrolytic cell.

[0012] In one embodiment, the connecting portion is a connecting hole that penetrates through opposite sides of the outer frame.

[0013] In one embodiment, there are multiple reinforcing ribs, and the multiple reinforcing ribs are distributed in an annular array.

[0014] In one embodiment, the reinforcing rib includes:

[0015] Connecting ribs, the connecting ribs are arranged in the hollow hole, one end of the connecting ribs is connected to the outer frame, and the other end extends radially towards the center of the hollow hole; and

[0016] Converging part, the converging part protrudes outside the hollow hole and is connected to the connecting ribs, and each surface of the converging part converges to the middle part of the hollow hole.

[0017] The present application also provides an electrolytic cell, including the end plate of the above-mentioned electrolytic cell.

[0018] The technical solution of the present application enables the outer frame to have a hollow hole that penetrates through the opposite side surfaces of the outer frame. By arranging at least part of the reinforcing ribs in the hollow hole and connecting them to the outer frame, the support strength of the outer frame can be improved. Furthermore, on the premise of improving the support strength of the end plate of the electrolytic cell, the weight of the end plate of the electrolytic cell can be greatly reduced, and at the same time, it is also convenient for hoisting and transporting the end plate of the electrolytic cell. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a perspective view of an embodiment of the end plate of the electrolytic cell provided by the present application;

[0021] Figure 2 It is a side view of one side of an embodiment of the end plate of the electrolytic cell provided by the present application, which is far from the electrode plate;

[0022] Figure 3 It is a side view of one side of an embodiment of the end plate of the electrolytic cell provided by the present application, which faces the electrode plate.

[0023] Explanation of the reference numerals in the drawings:

[0024] 100. Outer frame; 110. Annular frame; 111. Hollow hole; 112. Connecting part; 120. Support part; 121. Support surface; 122. Groove;

[0025] 200. Reinforcing rib; 210. Connecting rib; 220. Converging part.

[0026] The realization of the purpose, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the drawings. Detailed Embodiments

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0028] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0030] With the development of demands, high-pressure alkaline water electrolysis technology has become an important application research direction. However, to operate normally within a high-pressure range, the alkaline electrolyzer needs to meet sufficient structural requirements. The diameter of existing large-scale pressured water electrolyzers has reached more than 2 meters, the length of the electrolyzer is close to 5 meters, and the weight is close to 50 tons, which requires large-volume end plates for fastening. The end plate determines the total mass and volume of the high-pressure alkaline electrolyzer. However, the end plates of traditional electrolyzers are usually solid circular plate structures, which results in a relatively large weight of the end plates of the electrolyzer and is not convenient for hoisting and transportation.

[0031] To reduce the weight of the end plate of the electrolyzer, the present application proposes an end plate of the electrolyzer.

[0032] Please refer to Figures 1 to 3 , in an embodiment of the present application, the end plate of the electrolyzer includes an outer frame 100 and a reinforcing rib 200. The outer frame 100 has a hollow hole 111, and the hollow hole 111 penetrates through opposite side surfaces of the outer frame 100; the reinforcing rib 200 is at least partially disposed in the hollow hole 111 and is connected to the outer frame 100.

[0033] In an electrolytic cell, the electrolytic cell generally includes a plate assembly. The plate assembly includes a plurality of plates, and electrolytic chambers are formed between the plurality of plates. Hydrogen and oxygen are electrolyzed from the electrolyte through electrolysis. The electrolytic cell further includes end plates provided on the outer side of the plate assembly, thereby serving to connect with the plate assembly on the one hand and providing good support and protection for the plates on the other hand.

[0034] The outer frame 100 is a frame structure that plays a major supporting role. To improve the strength of the outer frame 100, the outer frame 100 can be made of a metal material. Specifically, the outer contour shape of the outer frame 100 can be rectangular, circular, or other shapes. The outer frame 100 has a hollow hole 111 that penetrates opposite side surfaces of the outer frame 100. On the one hand, this can greatly reduce the weight of the end plate of the electrolytic cell, and on the other hand, it is convenient for hoisting the end plate of the electrolytic cell. Specifically, the shape of the hollow hole 111 can be a circular hole, a rectangular hole, or other shaped holes. Among them, the shape of the hollow hole 111 can be the same as the shape of the outer contour of the outer frame 100; or the shape of the hollow hole 111 can be different from the shape of the outer contour of the outer frame 100.

[0035] To ensure that the end plate of the electrolytic cell has good support strength, a reinforcing rib 200 is also provided in this application. The reinforcing rib 200 is at least partially disposed in the hollow hole 111 and is connected to the outer frame 100. The setting of the reinforcing rib 200 can enhance the strength of the end plate of the electrolytic cell and avoid the risk of the outer frame 100 being easily deformed due to the setting of the hollow hole 111. In addition, the setting of the reinforcing rib 200 also makes it possible that when the end plate of the electrolytic cell is assembled with the plates of the electrolytic cell and the end plate of the electrolytic cell is disposed below the plates of the electrolytic cell, there is no risk that the end plate of the electrolytic cell will be deformed due to gravity because of its excessive weight, resulting in a large displacement between the plates of the electrolytic cell placed above the end plate of the electrolytic cell and the end plate of the electrolytic cell, thereby improving the sealing performance of the electrolytic cell. Specifically, when the reinforcing rib 200 is connected to the outer frame 100, the two can be an integral structure, or the connection effect can be achieved by means of screws, rivets, welding, etc. When the reinforcing rib 200 and the outer frame 100 are an integral structure, the reinforcing rib 200 and the outer frame 100 can be integrally formed by casting, or the structures of the reinforcing rib 200 and the outer frame 100 can be machined on the basis of a solid end plate structure by a lathe or a milling machine. When the reinforcing rib 200 is connected to the outer frame 100, a part of the reinforcing rib 200 is disposed in the hollow hole 111, and the other part protrudes outside the hollow hole 111; or it can include that the reinforcing rib 200 is entirely disposed in the hollow hole 111.

[0036] The technical solution of this application makes the outer frame 100 have a hollow hole 111, and the hollow hole 111 penetrates through the opposite side surfaces of the outer frame 100, which greatly reduces the weight of the end plate of the electrolytic cell. At the same time, it is also convenient for hoisting and transporting the end plate of the electrolytic cell. In addition, by making the outer frame 100 have a hollow hole 111, the weight of the end plate of the electrolytic cell is greatly reduced, thereby reducing the risk of large displacement between the electrode plate of the electrolytic cell and the end plate of the electrolytic cell caused by the deformation of the outer frame 100 under the action of gravity due to its too large weight, and then improving the good sealing performance of the electrolytic cell. By arranging the reinforcing rib 200 at least partially in the hollow hole 111 and connecting it to the outer frame 100, the support strength of the outer frame 100 can be improved, and then the support strength of the end plate of the electrolytic cell is improved.

[0037] Please refer to Figures 1 to 3 , in some embodiments of this application, the outer frame 100 includes an annular frame body 110 and a support portion 120. The annular frame body 110 has a hollow hole 111; the support portion 120 is connected to the annular frame body 110 and extends away from the hollow hole 111.

[0038] Specifically, the annular frame body 110 can be a circular ring-shaped frame body, a ring-shaped frame body formed by enclosing a rectangle, or a ring-shaped frame body formed by enclosing other closed shapes, etc. The support portion 120 is connected to the annular frame body 110 and extends away from the hollow hole 111, then the side of the support portion 120 away from the hollow hole 111 can be used as a support surface 121 to support the entire outer frame 100, so as to ensure that the outer frame 100 has a good stable support effect. The support portion 120 can be a support block, a support plate, a support tripod, etc., as long as it can achieve the effect of stably supporting the entire outer frame 100.

[0039] Please refer to Figures 1 to 3 , in some embodiments of this application, the support portion 120 is a support plate, and the side of the support plate away from the hollow hole 111 has a support surface 121, and the support surface 121 is a plane.

[0040] By setting the support portion 120 as a support plate and the support surface 121 on the side of the support plate away from the hollow hole 111 is a plane, the support portion 120 can be stably placed at the required position, reducing the risk of the outer frame 100 shaking.

[0041] Specifically, one, two or more support plates may be provided, and one or two or more support surfaces 121 may be provided on the side of each support plate away from the hollow hole 111 at intervals. It can be understood that when at least two support surfaces 121 are provided on the side of the support portion 120 away from the hollow hole 111, the at least two support surfaces 121 are in the same plane, so as to have good support stability for the outer frame 100 and ensure good balance of the outer frame 100.

[0042] Please refer to Figures 1 to 3 , in some embodiments of the present application, a groove 122 is formed on the support plate.

[0043] By forming the groove 122 on the support plate, the weight of the support plate can be further reduced, and then the weight of the entire electrolytic cell end plate can be reduced.

[0044] Specifically, the groove 122 on the support plate may only penetrate one of the plate surfaces of the support plate, or may penetrate two opposite surfaces of the support plate at the same time. The shape of the groove 122 may be rectangular, circular, triangular or other shapes, etc.

[0045] Please refer to Figures 1 to 3 , in some embodiments of the present application, the groove 122 is recessed from the side of the support plate away from the hollow hole 111 toward the side close to the hollow hole 111.

[0046] By making the groove 122 recessed from the side of the support plate away from the hollow hole 111 toward the side close to the hollow hole 111, the processing of the groove 122 is more convenient. On the other hand, it can also ensure that the support plate still has good support effect. In addition, with such a setting, it is also convenient for handling or hoisting the end plate of the electrolytic cell, etc.

[0047] Please refer to Figures 1 to 3 , in some embodiments of the present application, a connecting portion 112 is provided on the outer frame 100, and the connecting portion 112 is used to connect with the electrode plate of the electrolytic cell.

[0048] By providing the connecting portion 112 on the outer frame 100 to connect with the electrode plate of the electrolytic cell, it can ensure that the end plate of the electrolytic cell can be firmly connected with the electrode plate of the electrolytic cell, thus ensuring good sealing of the electrolytic cell.

[0049] Specifically, the connecting portion 112 can be a hole structure, a columnar structure, or other structures, etc., as long as it can achieve the effect that the end plate of the electrolytic cell can be connected to the electrode plate of the electrolytic cell through the connecting portion 112 of the outer frame 100. At least two connecting portions 112 can be provided, and the at least two connecting portions 112 can be symmetrically arranged about the center of the outer frame 100. Thereby, a good connection effect between the electrode plate and the end plate can be ensured. In order to further improve the good sealing performance between the electrode plate and the end plate, more connecting portions 112 can be provided. For example, three, four, five or more connecting portions 112 can be provided, which is convenient for ensuring good connection stability and good sealing performance between the outer frame 100 and the electrode plate. Specifically, in one example, 2n connecting portions 112 can be provided and uniformly arranged along the circumference of the outer frame 100, and n can be 3 to 12, etc. It can be understood that the size of n is determined by the size of the electrolytic cell.

[0050] Please refer to Figures 1 to 3 , in some embodiments of the present application, the connecting portion 112 is a connecting hole that penetrates through opposite sides of the outer frame 100.

[0051] By setting the connecting portion 112 as a connecting hole that penetrates through opposite sides of the outer frame 100, on the one hand, a pull rod can be inserted into the connecting hole, and then the pull rod can pass through the electrode plate, so that nuts can be threadedly connected to both ends of the pull rod, thereby ensuring that the end plate of the electrolytic cell and the electrode plate of the electrolytic cell can have a sufficiently stable connection effect; on the other hand, setting the connecting portion 112 as a connecting hole further reduces the weight of the end plate of the electrolytic cell, and the setting of the connecting hole also facilitates the user to hoist or transport the end plate of the electrolytic cell, etc.

[0052] Please refer to Figures 1 to 3 , in some embodiments of the present application, a plurality of reinforcing ribs 200 are provided, and the plurality of reinforcing ribs 200 are distributed in an annular array.

[0053] Specifically, two, three, four, five or more reinforcing ribs 200 can be provided. By providing a plurality of reinforcing ribs 200, the strength of the outer frame 100 can be further improved, and thus the strength of the end plate of the electrolytic cell is improved. In addition, by distributing the plurality of reinforcing ribs 200 in an annular array, the arrangement of the reinforcing ribs 200 can make the strength and weight of the entire end plate of the electrolytic cell more evenly distributed in the circumferential direction, thereby making the end plate of the electrolytic cell more stable.

[0054] Please refer to Figure 1As shown, in some embodiments of the present application, the reinforcing rib 200 includes a connecting rib 210 and a converging portion 220. The connecting rib 210 is disposed in the hollow hole 111. One end of the connecting rib 210 is connected to the outer frame 100, and the other end extends radially toward the center of the hollow hole 111. The converging portion 220 protrudes outside the hollow hole 111 and is connected to the connecting rib 210, and each surface of the converging portion 220 converges to the perpendicular bisector of the hollow hole 111.

[0055] By disposing the connecting rib 210 in the hollow hole 111, with one end connected to the outer frame 100 and the other end extending radially toward the center of the hollow hole 111, it is ensured that at least two reinforcing ribs 200 distributed in an annular array can have a good connection effect with the outer frame 100. Additionally, by protruding the converging portion 220 of each reinforcing rib 200 outside the hollow hole 111 and connecting it to the connecting rib 210, that is, the converging portion 220 in this embodiment is connected to the connecting rib 210 in the direction along the central axis of the outer frame 100, the thickness of the reinforcing rib 200 can be increased, thereby improving the strength of the reinforcing rib 200 and further enhancing the support strength of the electrolytic cell end plate. By converging each surface of the converging portion 220 to the perpendicular bisector of the hollow hole 111, the converging portion 220 is a cone, and the tip of the cone-shaped converging portion 220 is on the perpendicular bisector of the hollow hole 111, so that the surface of the converging portion away from the connecting rib 210 and the surface adjacent to the surface of the converging portion away from the connecting rib 210 are both inclined, that is, at a certain inclination angle with the perpendicular plane of the end plate of the electrolytic cell, which can further improve the strength of the reinforcing rib 200 and thus enhance the strength of the entire end plate of the electrolytic cell.

[0056] The present application also proposes an electrolytic cell, which includes the end plate of the electrolytic cell. The specific structure of the end plate of the electrolytic cell refers to the above embodiments. Since this electrolytic cell adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0057] The above description is only an exemplary embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made under the technical concept of the present application by using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. An end plate of an electrolytic cell, characterized in that, Comprising: An outer frame having a hollow hole that penetrates opposite side surfaces of the outer frame; Reinforcing ribs, at least a part of which are disposed in the hollow hole and connected to the outer frame.

2. The end plate of the electrolytic cell according to claim 1, characterized in that, The outer frame includes: An annular frame body having the hollow hole; and A support portion connected to the annular frame body and extending away from the hollow hole.

3. The end plate of the electrolytic cell according to claim 2, characterized in that, The support portion is a support plate, and a support surface is provided on a side of the support plate away from the hollow hole, and the support surface is a flat surface.

4. The end plate of the electrolytic cell according to claim 3, characterized in that, A groove is formed on the support plate.

5. The end plate of the electrolytic cell according to claim 4, characterized in that, The groove is recessed from a side of the support plate away from the hollow hole toward a side close to the hollow hole.

6. The end plate of the electrolytic cell according to claim 1, characterized in that, A connection portion is provided on the outer frame for connecting to a plate of an electrolytic cell.

7. The end plate of the electrolytic cell according to claim 6, characterized in that, The connection portion is a connection hole that penetrates opposite sides of the outer frame.

8. The end plate of the electrolytic cell according to any one of claims 1 to 7, characterized in that, A plurality of the reinforcing ribs are provided, and the plurality of reinforcing ribs are distributed in an annular array.

9. The end plate of the electrolytic cell according to claim 8, characterized in that, The reinforcing rib includes: A connecting rib disposed in the hollow hole, one end of the connecting rib being connected to the outer frame and the other end extending radially toward the center of the hollow hole; and A converging portion protruding outside the hollow hole and connected to the connecting rib, and each surface of the converging portion converges to a perpendicular bisector of the hollow hole.

10. An electrolytic cell, characterized in that, Including an end plate of the electrolytic cell according to any one of claims 1 to 9.

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