Elastic support body, polar plate, electrolytic bath and equipment for producing hydrogen by electrolyzing water
A flexible metal mesh with curved edges addresses inefficiencies in electrically enhanced oil recovery systems by improving mechanical strength, stability, and fluid dynamics, while reducing costs and enhancing adaptability.
Patent Information
- Application Number
- CN202422337283.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In the existing process of electrolyzing hydrogen production, the use of elastic support with frames increases manufacturing cost and affects electrolytic efficiency. The frames limit the deformation ability of the metal mesh, resulting in poor adaptability.
An elastic metal mesh woven with multiple strands of metal wire, the edges bent to the same side to form an arc-shaped reinforced bend edge, eliminating traditional frames, enhancing mechanical strength and stability, and optimizing fluid dynamic characteristics.
It improves electrolytic efficiency, reduces production costs, enhances the adaptability of the elastic metal mesh and the stability of the electrolytic cell, avoids diaphragm damage, and ensures the normal operation of the electrolytic process.
Smart Images
Figure CN223103091U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrolytic water hydrogen production, and particularly relates to an elastic support body, a plate electrode, an electrolytic cell and a device applied to electrolytic water hydrogen production. Background Art
[0002] During the process of electrolytic water hydrogen production, in order to improve the reaction efficiency and ensure the effective distribution and contact of electrode materials, a special support structure - an elastic support body is usually used. This support body can not only carry the electrode materials, but also promote the flow of the electrolyte, thereby optimizing the overall performance of the electrolysis process.
[0003] At present, the elastic support body used in the electrolytic cell can adopt a metal mesh as the basic component, and a frame is arranged at its edge to increase the rigidity and stability of the overall structure. The frame has two main functions:
[0004] Improve rigidity: By arranging a frame at the edge of the elastic metal mesh, the overall rigidity of the support body can be significantly enhanced, enabling it to maintain its shape without deformation under high-pressure environments, thus ensuring the stable progress of the electrolysis process.
[0005] Prevent the metal wire from piercing the diaphragm: During the electrolysis process, a diaphragm usually needs to be installed inside the electrolytic cell to separate the anode area and the cathode area and prevent the mixing of the electrolysis products in the two areas. The frame can effectively wrap the edge of the elastic metal mesh, avoiding the problem of diaphragm damage that may be caused by the sharp ends of the metal wires, and thus ensuring the normal operation of the electrolytic cell.
[0006] However, this design with a frame also has certain limitations. The most important problem is that the addition of the frame not only increases the manufacturing cost, but also may affect the hydrodynamic characteristics of the fluid inside the electrolytic cell, resulting in a reduction in electrolysis efficiency. In addition, the presence of the frame may also limit the deformation ability of the metal mesh, thereby affecting its adaptability under different pressure conditions. Summary of the Utility Model
[0007] The main technical problem to be solved by the utility model is to find an elastic support body that does not require an additional frame, has a lower cost, and can effectively improve the electrolysis efficiency.
[0008] The technical problem to be solved by the utility model is to find an elastic support body that does not require an additional frame, has a lower cost, and can effectively improve the electrolysis efficiency, and further provide a plate electrode, an electrolytic cell and a device applied to electrolytic water hydrogen production.
[0009] In order to solve the above technical problems, the technical solution provided by the utility model is as follows:
[0010] An elastic support body applied to electrolytic water hydrogen production, comprising: an elastic metal mesh;
[0011] The elastic metal mesh is a mesh structure woven from multiple strands of metal wires;
[0012] Edges of the elastic metal mesh are bent to the same side to form an arc-shaped reinforcing bent edge.
[0013] Optionally, each strand of metal wire contains at least two metal wires.
[0014] Optionally, the mesh structure is arranged in a wavy shape.
[0015] Optionally, the extending direction of the waves of the elastic metal mesh is a straight line or a broken line;
[0016] When the extending direction of the waves of the elastic metal mesh is a broken line, there is a smooth transition between adjacent broken line segments.
[0017] A plate for electrolytic water hydrogen production, comprising a plate body and a grid. At least one side of the plate body is provided with a first groove;
[0018] The elastic support as described in the above technical solution is placed in the first groove; the first groove is arranged in a shape that can accommodate the elastic support;
[0019] The grid and the plate body are respectively arranged on two sides of the elastic support and are in contact with the elastic support.
[0020] Optionally, the reinforcing bent edge of the elastic support is fixed in the first groove by welding.
[0021] Optionally, a second groove is further provided on the plate body, and the grid is placed in the second groove.
[0022] Optionally, the edge of the grid is fixed in the second groove by welding.
[0023] Optionally, the width between the tips of adjacent wave crests of the elastic metal mesh is greater than the aperture of the grid.
[0024] An electrolytic cell for electrolytic water hydrogen production, comprising the plate for electrolytic water hydrogen production as described in the above technical solution.
[0025] An apparatus for electrolytic water hydrogen production, comprising the electrolytic cell as described in the above technical solution.
[0026] The technical solution provided by the present utility model has the following technical effects:
[0027] The edges of the elastic metal mesh are bent to the same side to form an arc-shaped reinforcing bent edge. This treatment not only improves the mechanical strength of the elastic metal mesh and its edges, but also enhances the stability of the overall structure. And by bending the edges of the elastic metal mesh away from the diaphragm, the risk of the metal wires at the edge fracture piercing the diaphragm can be effectively avoided. This helps protect the diaphragm from damage and ensures the normal operation inside the electrolytic cell. Brief Description of the Drawings
[0028] By describing its exemplary embodiments in detail with reference to the drawings, the above and other features and advantages of the present utility model will become more apparent.
[0029] Figure 1 is a schematic structural diagram of the elastic support provided in Embodiment 1 of the present utility model;
[0030] Figure 2 is a schematic structural diagram of the electrode plate provided in Embodiment 2 of the present utility model;
[0031] Figure 3 is an exploded structural diagram of the electrode plate provided in Embodiment 2 of the present utility model.
[0032] Description of the Reference Numerals:
[0033] 1 - elastic support, 11 - elastic metal mesh, 12 - reinforcing bent edge, 2 - electrode plate body, 21 - first groove, 22 - second groove, 23 - electrolyte inlet, 24 - gas outlet, 3 - electrode mesh. Detailed Embodiments
[0034] Now, the exemplary embodiments will be described more fully with reference to the drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present utility model will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
[0035] The terms "a", "an", "the", and "said" are used to denote the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.
[0036] Embodiment 1:
[0037] See Figure 1, is a schematic structural diagram of an elastic support. The above schematic diagram is only to show the structural relationship related to the points of the utility model and does not represent the actual ratio of the actual product. The elastic support in this embodiment includes: an elastic metal mesh 11. The elastic metal mesh 11 is woven from multiple strands of metal wires, and the entire woven planar mesh structure is formed into a wavy shape. The wavy shape design is beneficial to optimizing the hydrodynamic characteristics inside the electrolytic cell, thereby improving the electrolysis efficiency. The wavy shape can promote the uniform distribution of the electrolyte on the electrode surface, reduce the bubble aggregation phenomenon during the electrolysis process, and thus improve the utilization rate of the electrode active material.
[0038] Bend the edge of the elastic metal mesh 11 to the same side to form an arc-shaped reinforced bending edge 12. The core of this design lies in the special structure of the elastic metal mesh 11. Specifically:
[0039] Edge treatment of the elastic metal mesh 11: The edge of the elastic metal mesh 11 is specially treated, that is, bent to the same side to form an arc-shaped reinforced bending edge 12. This treatment method not only improves the mechanical strength of the elastic metal mesh 11 and its edge, but also enhances the stability of the overall structure.
[0040] Avoid diaphragm damage: By bending the edge of the elastic metal mesh 11 away from the diaphragm, the risk of the metal wire at the edge fracture piercing the diaphragm can be effectively avoided. This helps protect the diaphragm from damage and ensures the normal operation inside the electrolytic cell.
[0041] Improve overall performance: This design can not only improve the rigidity of the elastic metal mesh 11, reduce deformation, but also reduce production costs because no additional frame material is required. At the same time, it also optimizes the hydrodynamic characteristics inside the electrolytic cell, thereby improving the electrolysis efficiency.
[0042] Enhance adaptability: After canceling the traditional frame, the elastic metal mesh 11 can better adapt to changes under different pressure conditions, improving the flexibility and adaptability of the entire electrolysis system.
[0043] The elastic metal mesh 11 is the core component of the elastic support 1, and its specific features include: the elastic metal mesh 11 is woven from multiple strands of metal wires, and each strand of metal wire is composed of at least two metal wires arranged side by side or wound together. The form of at least two metal wires enables the elastic metal mesh 11 to produce better self-adaptive deformation when being squeezed, making the support effect of the elastic metal mesh 11 on the pole mesh 3 more uniform and comprehensive. The elastic metal mesh 11 is designed as a mesh structure woven from multiple strands of metal wires and is set in a wavy shape. It not only provides physical support for the pole mesh 3, but also, due to its own elastic characteristics, can effectively adapt to the possible pressure changes during the electrolysis process, such as thermal expansion and contraction caused by temperature changes or reaction pressure fluctuations, ensuring uniform and stable contact between the electrode and other components (such as diaphragms or electrode plates) in the electrolytic cell, thereby reducing the contact resistance and energy loss.
[0044] As an improved implementation of the elastic metal mesh 11, the extending direction of the waves of the elastic metal mesh 11 is a straight line or a broken line (the broken-line waves are not shown in Figure 1 due to drawing accuracy issues, and its form is similar to the wavy anti-slip pattern of a tire); when the extending direction of the waves of the elastic metal mesh 11 is a broken line, the adjacent two broken-line segments are connected and transitioned through an arc. After setting the extending direction of the waves as a broken line, it is more difficult for the elastic metal mesh 11 to deform due to its own weight in the direction perpendicular to the extending direction of the waves, so the possibility of deformation is further reduced.
[0045] When the wave shape is a broken line, the adjacent two broken-line segments are connected in a smooth transition manner, which can ensure that the stress distribution of the elastic metal mesh 11 is more uniform during deformation, reduce local stress concentration, and thus improve the service life and reliability of the elastic metal mesh 11. In addition, the smooth-transition design enables the elastic metal mesh 11 to better adapt to changes under different pressure conditions, improving the flexibility and adaptability of the entire electrolysis system. This design helps to maintain the stability and consistency of the internal structure of the electrolytic cell and can maintain good performance even under extreme operating conditions.
[0046] Example 2:
[0047] Refer to Figure 2 and Figure 3 , which are Example 2 provided by the present utility model. This example provides a pole plate applied to hydrogen production by electrolyzing water, including a pole plate body 2 and a pole mesh 3, and at least one side of the pole plate body 2 is provided with a first groove 21.
[0048] Among them, the pole plate body 2 is an important component in the hydrogen production equipment by electrolyzing water. It is mainly used to support and fix the elastic support 1 and the pole mesh 3, provide a flow path for the electrolyte at the same time, and contribute to the collection and discharge of gas.
[0049] The electrode plate body 2 is usually made of corrosion-resistant materials to ensure stable operation in the electrolysis environment for a long time. The electrode plate body 2 is generally in a flat shape (it can be circular or square), with a certain thickness to withstand mechanical stress and the pressure generated during the electrolysis process. It has various sizes determined according to the design of the electrolytic cell and the required electrolysis area.
[0050] An electrolyte inlet 23 is provided on the edge of the electrode plate body 2 for introducing the electrolyte. At the same time, a gas outlet 24 is also provided for collecting and discharging the generated gas (usually hydrogen and oxygen). The electrolyte inlet 23 and the gas outlet 24 are through holes penetrating the electrode plate body. The electrolyte inlet 23 is usually designed to be circular or oval to ensure that the electrolyte can flow smoothly into the interior of the electrolytic cell. The electrolyte inlet 23 is usually provided on the edge of the electrode plate body 2 to facilitate connection with external pipelines. Such a design helps the electrolyte to be evenly distributed throughout the electrolytic cell, ensuring the efficient progress of the electrolysis process. The gas outlet 24 is also designed to be circular or oval to ensure that the gas can be discharged smoothly from the electrolytic cell. The gas outlet 24 is also provided on the edge of the electrode plate body 2, usually opposite to the electrolyte inlet 23, to facilitate the collection and discharge of the gas. Both the electrolyte inlet 23 and the gas outlet 24 are provided on the edge of the electrode plate body 2, which is convenient for connection with external pipelines or gas collection pipelines, and at the same time reduces the space occupation inside the electrolytic cell. These through holes are usually spaced apart to ensure that the electrolyte and gas can be evenly distributed in the electrolytic cell, thereby improving the electrolysis efficiency.
[0051] The electrode plate body 2 is used to support the electrode grid 3 and the elastic support 1 and fix them in appropriate positions to ensure the close fit between the electrode grid 3 and the diaphragm during the electrolysis process.
[0052] A first groove 21 for installing the elastic support 1 is provided on one side of the electrode plate body 2. The size and shape of the first groove 21 are precisely designed to match the elastic support 1 to ensure a good fit. The elastic support 1 is placed in the first groove 21, and the strengthened bending edge 12 is in close fit with the first groove 21. The electrode grid 3 and the electrode plate body 2 are respectively arranged on both sides of the elastic support 1 and are in contact with the elastic support 1.
[0053] The strengthened bending edge 12 of the elastic support 1 is fixed in the first groove 21 by welding. The strengthened bending edge 12 of the elastic support 1 is in close fit with the first groove 21 and is fixed by welding, which can significantly improve the mechanical strength and stability of the elastic support 1 and ensure that it is not easily deformed or displaced during the electrolysis process.
[0054] To ensure the effective positioning of the electrode grid 3, a second groove 22 is also provided on the electrode plate body 2, and the electrode grid 3 is placed in the second groove 22. The edge of the electrode grid 3 is fixed in the second groove 22 by welding. Specifically, a first groove 21 is provided in the second groove 22, and the first groove 21 and the second groove 22 form a stepped structure. The electrode grid 3 is placed in the second groove 22 and fixed by welding. This structural design ensures the stability of the electrode grid 3 and also provides a good conduction path for the electrolysis process.
[0055] The above welding can be spot welding. Spot Welding is a form of resistance welding that forms welding points by applying current and pressure between two or more metal sheets. Spot welding is usually used to connect thin metal sheets.
[0056] Among them, to ensure that the elastic metal mesh 11 does not pass through the electrode grid 3 and pierce the diaphragm, the width of the peak tip of the elastic metal mesh 11 is greater than the aperture of the electrode grid 3.
[0057] In this embodiment, the material of the electrode grid 3 is preferably a nickel mesh. However, depending on the type of electrolytic cell and the application working conditions, it is not excluded that one or more of the elements such as platinum, iridium, ruthenium, titanium, nickel, etc. are contained in the composition.
[0058] Embodiment 3:
[0059] This is Embodiment 3 provided by the present utility model. This embodiment provides an electrolytic cell applied to electrolytic hydrogen production, including the electrode plate applied to electrolytic water hydrogen production as described in Embodiment 2 above.
[0060] The ALK electrolytic cell and the AEM electrolytic cell have the same structure, and the difference lies in the selection of the electrolyte and the diaphragm. The specific differences between the two will not be elaborated here.
[0061] Since the ALK or AEM electrolytic cell in this embodiment includes the electrode plate described in Embodiment 2, it thus has all the technical effects brought by Embodiment 2.
[0062] Embodiment 4:
[0063] This embodiment provides a device applied to electrolytic water hydrogen production, including the electrolytic cell as described in Embodiment 3. Others such as the power supply, gas-liquid separation system, liquid supply system, hydrogen storage system, safety system, etc. are the same as the prior art and will not be elaborated here.
[0064] Since this embodiment includes the ALK or AEM electrolytic cell as described in Embodiment 3, it thus has all the technical effects brought by Embodiment 3.
[0065] In the embodiments of the present utility model, the term "a plurality of" refers to two or more, unless otherwise clearly defined. Terms such as "installation", "connection", and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.
[0066] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model.
[0067] In the description of this specification, the description of terms such as "one embodiment" and "one preferred embodiment" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0068] The above are only the preferred embodiments of the embodiments of the present utility model and are not used to limit the embodiments of the present utility model. For those skilled in the art, the embodiments of the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present utility model shall be included within the protection scope of the embodiments of the present utility model.
Claims
1. An elastic support body applied to hydrogen production by electrolyzing water, characterized in that, Comprising: Elastic metal mesh (11); The elastic metal mesh (11) is a mesh structure woven from multiple strands of metal wires; Edges of the elastic metal mesh (11) are bent towards the same side to form an arc-shaped reinforcing bent edge (12).
2. The elastic support body applied to hydrogen production by electrolyzed water according to claim 1, characterized in that, Each strand of metal wire contains at least two metal wires.
3. An elastic support body applied to hydrogen production by electrolytic water according to claim 1 or 2, characterized in that The mesh structure is arranged in a wavy shape.
4. An elastic support body applied to hydrogen production by electrolyzing water according to claim 3, characterized in that, The extending direction of the waves of the elastic metal mesh (11) is a straight line or a broken line; When the extending direction of the waves of the elastic metal mesh (11) is a broken line, the adjacent two broken line segments are smoothly transitioned.
5. A plate used in electrolytic water hydrogen production, characterized in that, Comprising a plate body (2) and a grid (3), at least one side of the plate body (2) is provided with a first groove (21); The elastic support (1) as described in any one of claims 1 to 4 is placed in the first groove (21); the first groove (21) is arranged in a shape that can accommodate the elastic support (1); The grid (3) and the plate body (2) are respectively arranged on two sides of the elastic support (1) and are in contact with the elastic support (1).
6. The plate for electrolytic water hydrogen production according to claim 5, wherein The reinforcing bent edge (12) of the elastic support (1) is fixed in the first groove (21) by welding.
7. A plate for electrolytic water hydrogen production according to claim 5 or 6, characterized in that A second groove (22) is further provided on the plate body (2), and the grid (3) is placed in the second groove (22).
8. A plate for electrolytic water hydrogen production according to claim 5 or 6, characterized in that, The width between the tips of adjacent two wave crests of the elastic metal mesh (11) is greater than the aperture of the grid (3).
9. An electrolyzer applied to hydrogen production by electrolyzing water, characterized in that, Comprising a plate for electrolytic water hydrogen production as described in any one of claims 5 to 8.
10. An apparatus applied to hydrogen production by electrolyzing water, characterized in that, Comprising an electrolytic cell as described in claim 9.