Supporting structure
By designing a plate-shaped main body and elastically connected support units, the problem of insufficient mechanical strength in traditional support structures was solved, resulting in higher electrolysis efficiency and more uniform current distribution.
Patent Information
- Application Number
- CN202520042023.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Traditional support structures have poor mechanical strength and are prone to plastic deformation, which leads to poor conductivity, especially in large-volume electrolytic cells where uneven current distribution affects electrolysis efficiency.
Design a support structure including a plate-shaped main body and multiple elastically connected support units. Each support unit consists of an extension and an elastic body. The extension is parallel to the main body and provides stable support force through the elastic body, ensuring surface contact and offsetting external forces to prevent plastic deformation.
This improves the stability and conductivity of the support structure, ensures good contact between the electrode and the support structure, and enhances electrolysis efficiency and the uniformity of current distribution.
Smart Images
Figure CN223660242U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electrolytic water hydrogen production technical field especially, relates to a support structure. BACKGROUND
[0002] In the field of electrolytic water hydrogen production, the gas-liquid diffusion layer in the electrolytic cell mostly uses papillary plate, stretch net, woven net and folded nickel as support structure and conductive material, in small volume electrolytic cell and electric pile, stretch net, woven net and folded nickel are convenient and can have good performance. In large volume and scale electric pile, papillary plate becomes the main choice, stretch net, woven net cannot provide more space for gas-liquid diffusion layer, the specific surface area of papillary plate is low, and the current distribution is uneven, which affects the electrolysis efficiency. The mechanical strength of foamed nickel is poor, and it cannot recover after being pressed, in the pursuit of higher and more stable electrolysis efficiency, more and more new support structures begin to appear.
[0003] The porous structure of foamed nickel gives foamed nickel high specific surface area, but its mechanical strength is poor and plastic deformation occurs easily, and it deforms when the pressure on the positive and negative sides is inconsistent and cannot provide stable support force for the catalytic electrode.
[0004] In addition, the free end of the support structure lacks support in the electric pile, and plastic deformation occurs during assembly and experimental operation, the free end deforms plastically to change the surface contact into line contact or point contact with the electrode, resulting in poor conductivity and uneven electric field.
[0005] In summary, the traditional support structure and material cannot keep up with the pursuit of higher electrolysis efficiency. INVENTION CONTENTS
[0006] The utility model mainly solves the technical problems that the mechanical strength of the porous structure of foamed nickel is poor and plastic deformation occurs easily, and the free end of the existing support structure deforms plastically to cause poor conductivity, and proposes a support structure that can make the extension obtain more support force, stably keep the support section of the extension parallel to the main part and maintain good surface contact with the electrode when subjected to external force, and improve the stability of the support structure.
[0007] The utility model provides a support structure, which comprises a main part and a plurality of support units on one side of the main part.
[0008] The main part is provided in the form of a plate structure, and a plurality of openings are arranged on the main part.
[0009] The support unit comprises an extension and an elastic body.
[0010] The extension part is integrally arranged at the opening edge of the main body part, and the extension part is elastically connected with the main body part;
[0011] The extension part has a connecting section and a supporting section integrally arranged with the connecting section; the supporting section is parallel to the main body part; and the supporting section is adapted to the opening shape of the main body part;
[0012] The elastic body is fixed above the opening of the main body part, and the upper surface of the elastic body is fixed with the lower surface of the supporting section.
[0013] Preferably, the openings of adjacent rows are staggered; and the supporting units of adjacent rows are oppositely and staggered arranged.
[0014] Preferably, in the transverse direction, the distance between the connecting lines of the symmetry axes of adjacent extension parts is 20-40mm, and the distance between the connecting lines of the symmetry axes of extension parts of different rows is 10-20mm.
[0015] Preferably, in the longitudinal direction, the distance between the end portions of adjacent extension parts in the same direction is 30-60mm, and the distance between the end portions of adjacent extension parts in the opposite direction is 25-50mm.
[0016] Preferably, the opening of the main body part and the supporting section adopt circular, elliptical, semicircular, square, rhombic or irregular shapes.
[0017] Preferably, the opening of the main body part is formed by stamping.
[0018] Preferably, the thickness of the main body part and / or the extension part is 0.5-5mm.
[0019] Preferably, the elastic body adopts a cylindrical spring or a conical spring made of metal.
[0020] Preferably, the main body part, the extension part and the elastic body are connected by welding.
[0021] The supporting structure provided by the utility model sets the elastic body, so that the extension part (free end) obtains more supporting force, can stably keep the supporting section of the extension part parallel to the main body part and keep good surface contact with the electrode when subjected to external force; the free end is not prone to plastic deformation, and the stability of the supporting structure can be improved. The supporting units of adjacent rows are oppositely and staggered arranged, so that the extension part in the supporting structure cannot be inclined to one direction as a whole, and the opposite forces are offset simultaneously under pressure. Under the premise of ensuring conductivity, the utility model can provide greater elastic force to ensure stable support, and can solve the problem of plastic deformation of the supporting structure and keep stable surface contact with the electrode. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 is a structural schematic view of the supporting structure provided by the utility model;
[0023] Figure 2 is a partial enlarged view of the supporting structure provided by the utility model;
[0024] Figure 3 is a structural schematic view of the extension and the elastic body provided by the utility model.
[0025] Reference signs: 1, main body part; 2, extension; 3, elastic body; 201, connecting section; 202, supporting section. DETAILED DESCRIPTION
[0026] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the utility model will be further described in detail below in combination with the drawings and embodiments.It can be understood that the specific embodiments described herein are only used to explain the utility model, not to limit the utility model.In addition, it needs to be explained that in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all the contents.
[0027] As shown in Figures 1-2 the utility model embodiment provides a kind of supporting structure, comprising: main body part 1 and the multiple supporting units in the one side of main body part 1.
[0028] The main body part 1 is set to plate structure;Multiple openings arranged are left on the main body part 1;The opening of the main body part 1 is formed by stamping.
[0029] Multiple supporting units are arranged corresponding to multiple openings, and the corresponding multiple supporting units are also arranged.Meanwhile, the openings of adjacent rows are staggered;The supporting units of adjacent rows are arranged towards and staggered.
[0030] As shown in Figure 3 the supporting unit, comprising: extension 2 and elastic body 3.The extension 2 is integrally arranged in the opening edge of main body part 1, and the extension 2 is elastically connected between main body part 1;
[0031] The extension 2 has connecting section 201 and supporting section 202 integrally arranged with connecting section 201;The support 202 forms free end, and the supporting section 202 is parallel with main body part 1;The supporting section 202 is adapted to the shape of the opening of main body part 1;Specifically, the supporting section 202 and the opening of main body part 1 adopt circular, oval, semicircular, square, rhombus or irregular shape.
[0032] Multiple extensions 2 are arranged on the same side of main body part 1, and the supporting sections 202 of multiple extensions 2 are located in the same plane, and the plane where the supporting section 202 is located is parallel with main body part 1.Connecting section 201 is integrally formed with main body part 1 and supporting section 202.
[0033] The elastic body 3 is fixed above the opening of the main body part 1, and the upper side of the elastic body 3 is fixed with the lower surface of the supporting section 202. The main body part 1, the extending part 2 and the elastic body 3 are connected by welding. The elastic body 3 is a cylindrical spring or a conical spring made of metal, and the elastic body 3 provides outward supporting force, and preferably a conical spring.
[0034] The parameters of the supporting structure of the utility model are as follows: in the horizontal direction, the distance L1 between the connecting lines of the symmetry axes of the adjacent extending parts 2 is 20-40 mm, and the distance L2 between the connecting lines of the symmetry axes of the extending parts 2 in different rows is 10-20 mm.
[0035] In the longitudinal direction, the distance H1 between the end portions of the adjacent extending parts 2 in the same direction is 30-60 mm, and the distance H2 between the end portions of the adjacent extending parts 2 in the opposite direction is 25-50 mm.
[0036] The thickness of the main body part 1 and / or the extending part 2 is 0.5-5 mm.
[0037] The manufacturing process of the supporting structure of the utility model is as follows: the extending part 2 is punched out on a 316 metal plate with a length of 400 mm, a width of 250 mm and a thickness of 1 mm, and the size of the punched part is a length of 20.5 mm and a width of 10 mm; the horizontal distance between the extending parts 2 in the same direction is 17 mm, the longitudinal distance H1 is 41 mm, the distance L1 between the connecting lines of the symmetry axes of the extending parts 2 is 27 mm, the horizontal distance between the end portions of the extending parts 2 in the opposite direction is 3.5 mm, and the longitudinal distance H2 is 38 mm; the connecting section 201 and the main body part 1 are at an angle of 45°, and the length is 7.5 mm; the supporting section 202 parallel to the main body part 1 is a square with a side length of 10 mm; the supporting section 202 is connected with the elastic body 3 by welding, the upper surface of the stainless steel main body part 1 is connected with the elastic body 3 by welding, and the elastic body 3 is a conical spring (a coil spring), the spiral direction is right-handed, the free height of the conical spring is 5.7 mm, the installation height is 4.5 mm, the number of turns of the conical spring is 3, the bottom diameter is 15 mm, the top diameter is 8 mm, the pitch is linearly variable, the initial pitch at the bottom is 0 mm, and the final pitch at the top is 3 mm.
[0038] The comparison experiments between the foam nickel, the supporting structure without elastic body and the supporting structure of the utility model are as follows:
[0039] 1. Installation and test of deformation amount.
[0040] The foam nickel and the supporting structure without elastic body are selected as the comparison, the supporting structure without elastic body is set as a supporting body without elasticity with the same size, the extending parts are arranged in the same direction, and the thickness of the three is set as 6.5 mm, the thickness after assembly is 5 mm, the compression ratio is 23%, the assembly state is maintained for 24 h, and then the plastic deformation amount is detected after disassembly.
[0041]
[0042] Conclusion: After the end of the assembly experiment, it is found that the foamed nickel is plastically deformed, the surface is smooth, the overall thickness is 5mm, and it cannot rebound after assembly; the 6.5mm non-elastic body support structure is plastically deformed, the surface is uneven, more than 40% of the extension part is plastically deformed, the free end is close to the main body, and it cannot be parallel to the main body, and the extension part arranged in the same direction is displaced when compressed; the 6.5mm elastic body support structure of the utility model has very small plastic deformation, the surface is smooth, the extension part is still parallel to the main body, and the catalytic electrode is not displaced.
[0043] 2, test the current density.
[0044] Three kinds of support structures are assembled into electrolytic cells, and the experimental conditions are the same: 30% KOH solution is introduced at the same flow rate, the temperature is set to 80 DEG C, the constant voltage is input to 2V, and after one hour of experiment, the pressure on the negative side is maintained at 1MPa for 1h. The experimental results are as follows:
[0045]
[0046] Conclusion: During operation, it is found that the current density of foamed nickel is the highest before pressure is applied, the current density of the 6.5mm non-elastic body support structure is the lowest before and after pressure is applied, and the current density of the 6.5mm elastic body support structure of the utility model changes the least before and after pressure is applied, and the effect is the best.
[0047] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments are modified, or part or all of the technical features are replaced, and the essence of the corresponding technical solutions does not deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A support structure, characterized in that, include: The main body (1) and multiple support units located on one side of the main body (1); The main body (1) is configured as a plate-like structure; The main body (1) has multiple openings arranged in a row; Multiple support units are configured to correspond to multiple openings; The support unit includes: an extension (2) and an elastic body (3); The extension (2) is integrally disposed at the opening edge of the main body (1), and the extension (2) is elastically connected to the main body (1); The extension (2) has a connecting section (201) and a support section (202) integrally formed with the connecting section (201); the support section (202) is parallel to the main body (1); the support section (202) is adapted to the opening shape of the main body (1); The elastic body (3) is fixed above the opening of the main body (1), and the upper part of the elastic body (3) is fixed to the lower surface of the support section (202).
2. The support structure according to claim 1, characterized in that, The openings of adjacent rows are staggered; the support units of adjacent rows face each other and are staggered.
3. The support structure according to claim 2, characterized in that, In the horizontal direction, the distance between the lines connecting the axes of symmetry of adjacent extensions (2) is 20-40 mm, and the distance between the lines connecting the axes of symmetry of extensions (2) in different rows is 10-20 mm.
4. The support structure according to claim 2, characterized in that, In the longitudinal direction, the distance between the ends of adjacent same-direction extensions (2) is 30-60 mm, and the distance between the ends of adjacent opposite-direction extensions (2) is 25-50 mm.
5. The support structure according to claim 1, characterized in that, The openings of the support section (202) and the main body (1) are circular, elliptical, semi-circular, square or rhomboid.
6. The support structure according to claim 5, characterized in that, The opening of the main body (1) is formed by stamping.
7. The support structure according to claim 1, characterized in that, The thickness of the main body (1) and / or the extension (2) is 0.5 to 5 mm.
8. The support structure according to claim 1, characterized in that, The elastic body (3) is made of metal cylindrical spring or conical spring.
9. The support structure according to claim 1, characterized in that, The main body (1), extension (2) and elastomer (3) are connected by welding.