Compensation gasket and electrolytic bath

Abstract

The utility model provides a compensation gasket and an electrolytic bath, the compensation gasket comprises a gasket body, the middle part of the gasket body is provided with a reaction port, and the gasket body is provided with a mounting groove for avoiding a connecting rod in the electrolytic bath. According to the scheme, the thickness compensation of the original sealing ring or sealing gasket in the electrolytic bath can be realized by inserting the compensation gasket between the polar plate and the sealing ring of the electrolytic bath, the operation is convenient, and the required cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogen production, and particularly relates to a compensation gasket and an electrolytic cell. Background Art

[0002] At present, the electrolyzer is an important equipment in the hydrogen energy industry. Its components mainly include the tank body, anode plate, cathode plate, ion exchange membrane, water inlet and outlet channels, hydrogen outlet, and sealing rings or sealing gaskets, etc. The various components are arranged and connected by connecting rods. When the electrolyzer is connected to the water tank, the electrolyzer is started, and oxygen, hydrogen ions and electrons can be reacted on the anode side. Then the hydrogen ions pass through the ion exchange membrane and combine with electrons at the cathode to generate hydrogen, which is then released from the hydrogen outlet to produce the desired product. However, during the testing or use of the finished electrolyzer, if it is found that the thickness of the sealing ring or sealing gasket is not enough and affects the reaction, the electrolyzer is disassembled to replace the sealing ring or sealing gasket, resulting in low operating efficiency. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a compensation gasket and an electrolytic cell to solve the above-mentioned problems.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides a compensation gasket, including a gasket body, a reaction port is opened in the middle of the gasket body, and a mounting groove for avoiding the connecting rod in the electrolytic cell is provided on the gasket body, and the mounting groove is in the shape of a long strip, and the port of the mounting groove is arranged on the first side of the gasket body, and the first side is any side of the gasket body.

[0005] Optionally, there are two installation grooves, which are arranged in parallel.

[0006] Optionally, the reaction port is located between two mounting grooves, and the distance between the mounting groove and the reaction port is 9-11 mm.

[0007] Optionally, the gasket body is in a square or rectangular shape, the mounting groove is parallel to the second side of the gasket body, and the second side of the gasket body is perpendicular to the first side of the gasket body.

[0008] Optionally, the ratio of the distance between the second side and its adjacent mounting groove to the distance between the second side and the reaction port is 1:4-5.

[0009] Optionally, the ratio between the area of ​​the reaction port and the area of ​​the gasket body is 1:3-4.

[0010] Optionally, the thickness of the gasket body is 0.1-1 mm.

[0011] To achieve the above-mentioned purpose and other related purposes, the utility model provides an electrolytic cell, comprising an end plate, a connecting rod, at least one electrolytic unit and at least one compensation gasket, wherein the end plates are respectively arranged on both sides of the electrolytic unit, and the connecting rod passes through the electrolytic unit and the two ends are respectively threadedly connected to the corresponding end plates, the electrolytic unit comprises a cathode plate, a cathode sealing ring, a cathode gas diffusion layer, a diaphragm, an anode gas diffusion layer, an anode sealing ring and an anode plate stacked in sequence along the thickness direction, and the compensation gasket is arranged between the cathode plate and the cathode sealing ring and / or between the anode plate and the anode sealing ring.

[0012] Optionally, reaction zones are respectively arranged on the anode plate and the cathode plate, and the reaction ports of the compensation gasket are arranged corresponding to the reaction zones.

[0013] Optionally, four connecting rods are provided, and two connecting rods are distributed in the same installation groove of the compensation gasket.

[0014] As described above, the compensating gasket and electrolytic cell of the utility model have the following beneficial effects:

[0015] In this solution, the reaction port is set to ensure that the reaction chamber in the electrolyzer is not blocked by the gasket body, thereby ensuring the smooth progress of the hydrogen production process. The installation slot is set so that the compensation gasket in this application can avoid the connecting rod in the electrolyzer, and the compensation gasket can be installed without disassembling the electrolyzer.

[0016] It should also be noted that the setting on the gasket body for avoiding the connecting rod is a mounting groove rather than a mounting hole. The mounting groove is strip-shaped, and the opening of the mounting groove is set on the first side of the gasket body so that it can avoid the connecting rod. If a mounting hole is set, the electrolytic cell needs to be disassembled to achieve the installation of the compensation gasket.

[0017] In the present application, when the sealing gasket in the assembled electrolytic cell is not thick enough, it is only necessary to insert the compensation gasket between the electrode plate of the electrolytic cell and the original sealing ring. There is no need to disassemble the electrolytic cell to replace the sealing gasket, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the compensation gasket in the embodiment of the utility model.

[0019] Figure 2 It is a schematic diagram of the structure of the electrolytic cell in the embodiment of the utility model.

[0020] Figure 3 It is a schematic diagram of the cooperation between the compensation gasket and the connecting rod in the embodiment of the utility model. DETAILED DESCRIPTION

[0021] The figure marks in the drawings of the specification include: end plate 1, compensation gasket 2, gasket body 201, reaction port 202, mounting groove 203, second side 204, first side 205, cathode plate 3, cathode sealing ring 4, cathode gas diffusion layer 5, diaphragm 6, anode gas diffusion layer 7, anode sealing ring 8, anode plate 9, connecting rod 10.

[0022] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0023] It should be emphasized that the insufficient thickness of the sealing ring or sealing gasket is usually caused by production errors or corrosion, aging or physical damage during subsequent use. For the assembled electrolytic cell, if the sealing ring or sealing gasket is replaced by the existing disassembly and replacement method, the operation is cumbersome and the replacement efficiency is low.

[0024] The utility model provides a compensating gasket, such as Figure 1 As shown, it is mainly used in electrolytic cells that have been assembled.

[0025] In an exemplary embodiment of the present application, a compensation gasket is provided, including a gasket body 201, a reaction port 202 is provided in the middle of the gasket body 201, and a mounting groove 203 for avoiding the connecting rod 10 in the electrolytic cell is provided on the gasket body 201, the mounting groove 203 is in the shape of a long strip, and the port of the mounting groove 203 is arranged on the first side 205 of the gasket body 201, and the first side 205 is any side of the gasket body 201.

[0026] It is worth noting that the reaction port 202 is set to ensure that the reaction chamber in the electrolytic cell is not blocked by the gasket body 201, thereby ensuring the smooth progress of the hydrogen production process. The installation groove 203 is set so that the compensation gasket 2 in the present application can avoid the connecting rod 10 in the electrolytic cell, and the compensation gasket 2 can be installed without disassembling the electrolytic cell.

[0027] It should also be noted that the setting on the gasket body 201 for avoiding the connecting rod 10 is a mounting groove 203 rather than a mounting hole. The mounting groove 203 is in the shape of a long strip, and the opening of the mounting groove 203 is set on the first side 205 of the gasket body 201, so that the connecting rod 10 can enter the mounting groove 203 from the port of the mounting groove 203, so that it can avoid the connecting rod 10. If a mounting hole is set, the electrolytic cell needs to be disassembled to realize the installation of the compensation gasket 2.

[0028] In this embodiment, when the sealing gasket in the assembled electrolytic cell is not thick enough, it is only necessary to insert the compensation gasket 2 between the electrode plate of the electrolytic cell and the original sealing ring. There is no need to disassemble the electrolytic cell to replace the sealing gasket, which is easy to operate.

[0029] In an exemplary embodiment, two mounting grooves 203 are provided, and the two mounting grooves 203 are arranged in parallel.

[0030] In this embodiment, two mounting grooves 203 are provided to adapt to the situation where four connecting rods 10 are provided in the electrolytic cell.

[0031] It should be noted that the number of the installation slots 203 needs to be set corresponding to the distribution of the connecting rods 10 in the electrolytic cell to ensure that the installation slots 203 can avoid all the connecting rods 10 of the electrolytic cell.

[0032] In an exemplary embodiment, the reaction port 202 is located between two mounting grooves 203 , and the distance L1 between the mounting grooves 203 and the reaction port 202 is 9-11 mm.

[0033] It is worth noting that, in order to ensure the connection stability of each component in the electrolytic cell, two rows of connecting rods 10 are provided, and each row of connecting rods 10 is provided with a corresponding mounting groove 203. Therefore, mounting grooves 203 are provided on both sides of the reaction port 202 in the present application.

[0034] It should also be noted that, in order to prevent the installation groove 203 from affecting the reaction, a certain distance should be left between the installation groove 203 and the reaction port 202 to ensure the sealing performance.

[0035] Exemplarily, the distance L1 between the mounting groove 203 and the reaction port 202 may be 9 mm, 9.5 mm, 10 mm or 11 mm. The specific distance value may be set according to requirements. The larger the distance value, the better the sealing performance, so as to meet different sealing performance requirements.

[0036] In an exemplary embodiment, the gasket body 201 is in a square or rectangular shape, the mounting groove 203 is parallel to the second side 204 of the gasket body 201 , and the second side 204 is perpendicular to the first side 205 .

[0037] It should be noted that, in order to adapt to the existing electrolytic cell, the gasket body 201 is configured to be square or rectangular. The mounting groove 203 is parallel to the second side 204 of the gasket body 201 to facilitate the installation of the sealing gasket.

[0038] It should also be noted that if the gasket body 201 is rectangular, the second side 204 may be a long side or a short side of the gasket body 201 .

[0039] In an exemplary embodiment, the ratio of the distance L2 between the second side 204 and the adjacent mounting groove 203 to the distance L3 between the second side 204 and the reaction port 202 is 1:4-5.

[0040] It should be emphasized that, in order to facilitate the installation of the compensation gasket 2, the side of the installation groove 203 away from the reaction port 202 can be set to be open (i.e., the second side 204 is removed), but this may cause the compensation gasket 2 to be unstable during installation, so the second side 204 of the compensation gasket 2 is retained in this embodiment. In order to increase the installation stability of the compensation gasket 2 and ensure the strength of the compensation gasket 2, the ratio of the distance L2 between the second side 204 and its adjacent installation groove 203 and the distance L3 between the second side 204 and the reaction port 202 is set to 1:4-5.

[0041] Exemplarily, the ratio of the distance L2 between the second side 204 and its adjacent mounting groove 203 to the distance L3 between the second side 204 and the reaction port 202 is set to 1:4, 1:4.5 or 1:5, and the specific ratio can be set according to actual needs.

[0042] In an exemplary embodiment, the ratio between the area of ​​the reaction port 202 and the area of ​​the gasket body 201 is 1:3-4.

[0043] It should be noted that, in order to ensure the sealing performance, the ratio between the area of ​​the reaction port 202 and the area of ​​the gasket body 201 is 1:3-4.

[0044] Exemplarily, the ratio between the area of ​​the reaction port 202 and the area of ​​the gasket body 201 is 1:3, 1:3.5 or 1:4.

[0045] In an exemplary embodiment, the thickness of the gasket body 201 is 0.1-1 mm.

[0046] In this embodiment, the thickness of the compensation gasket 2 is set to 0.1-1 mm to meet the compensation of a smaller gap. If the gap is larger, multiple compensation gaskets 2 can be provided to meet the compensation requirements.

[0047] like Figure 2 and Figure 3As shown, with respect to the above-mentioned compensation gasket 2, the present application further provides an electrolytic cell, comprising an end plate 1, a connecting rod 10, at least one electrolytic unit and at least one compensation gasket 2, wherein the end plates 1 are respectively arranged on both sides of the electrolytic unit, and the connecting rod 10 passes through the electrolytic unit and the two ends are respectively threadedly connected to the corresponding end plates 1, and the electrolytic unit comprises a cathode plate 3, a cathode sealing ring 4, a cathode gas diffusion layer 5, a diaphragm 6, an anode gas diffusion layer 7, an anode sealing ring 8 and an anode plate 9 stacked in sequence along the thickness direction, and the compensation gasket 2 is arranged between the cathode plate 3 and the cathode sealing ring 4 and / or between the anode plate 9 and the anode sealing ring 8.

[0048] In this embodiment, the connecting rod 10 is used to achieve the connection between the end plate 1 and the electrolysis unit. The electrolysis unit can be provided as one or multiple electrolysis units arranged side by side to meet the demand for hydrogen production.

[0049] In an exemplary embodiment, reaction areas are respectively provided on the anode plate 9 and the cathode plate 3 , and the reaction ports 202 of the compensation gasket 2 are provided corresponding to the reaction areas.

[0050] In this embodiment, the shape of the reaction port 202 can be set to be consistent with the shape of the reaction zone, or the area of ​​the reaction port 202 can be set to be larger than the reaction zone to avoid the setting of the compensation gasket 2 affecting the reaction.

[0051] It should also be noted that the end plate 1 and the electrolysis unit are also provided with liquid channels and gas channels connected to the reaction zone, which are existing structures and will not be described in detail here.

[0052] In an exemplary embodiment, four connecting rods 10 are provided, and two connecting rods 10 are distributed in the same mounting groove 203 of the compensation gasket 2 .

[0053] In this embodiment, in order to ensure the installation stability of various components in the electrolytic cell, four connecting rods 10 are provided. The four connecting rods 10 can be provided at the four corners of the electrolytic cell to ensure the installation stability between various components.

[0054] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A compensating gasket, characterized in that: It comprises a gasket body, a reaction port is opened in the middle of the gasket body, and a mounting groove for avoiding a connecting rod in the electrolytic cell is arranged on the gasket body.

2. The compensating gasket according to claim 1, characterized in that: There are two installation grooves, which are arranged in parallel.

3. The compensating gasket according to claim 2, characterized in that: The reaction port is located between two mounting grooves, and the distance between the mounting groove and the reaction port is 9-11 mm.

4. The compensating gasket according to claim 3, characterized in that: The mounting groove is in the shape of an elongated strip, and the port of the mounting groove is arranged on the first side of the gasket body, and the first side is any side of the gasket body; the gasket body is in the shape of a square or a rectangle, and the mounting groove is parallel to the second side of the gasket body, and the second side of the gasket body is perpendicular to the first side of the gasket body.

5. The compensating gasket according to claim 4, characterized in that: The ratio of the distance between the second side and the adjacent mounting groove to the distance between the second side and the reaction port is 1:4-5.

6. The compensating gasket according to claim 1, characterized in that: The ratio between the area of ​​the reaction port and the area of ​​the gasket body is 1:3-4.

7. The compensating gasket according to claim 1, characterized in that: The thickness of the gasket body is 0.1-1 mm.

8. An electrolytic cell, characterized in that: It comprises the compensating gasket as claimed in any one of claims 1 to 7.

9. The electrolytic cell according to claim 8, characterized in that The electrolytic cell further comprises an anode plate and a cathode plate, and reaction zones are respectively arranged on the anode plate and the cathode plate, and the reaction ports of the compensation gasket are arranged corresponding to the reaction zones.

10. The electrolytic cell according to claim 8, characterized in that The electrolytic cell further comprises connecting rods, four of which are provided, and two of the connecting rods are distributed in the same mounting groove of the compensation gasket.

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