Polar distance supporting and conducting structure of cathode film

By using the cathode film distance support structure with diamond mesh support and Rainey nickel active coating in the electrolytic cell, the problem of failure of the cathode film distance under reverse pressure and current is solved, and better anti-reverse ability and cost reduction are achieved.

CN223268783UActive Publication Date: 2025-08-26JIANGYIN HONGZE CHLORINE ALKALI EQUIP PRODUCING CO LTD
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Patent Information

Application Number
CN202422637535.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2025-08-26
Estimated Expiration
2034-10-31

AI Technical Summary

Technical Problem

The cathode film distance structure of the existing electrolytic cells is prone to failure under reverse pressure and current, resulting in conductivity failure and high manufacturing cost.

Method used

A diamond plate mesh formed by dilatation and stretching of nickel plates is used as a support member. The support frame is coated with a Rainey nickel active layer. The support frame includes a convex, Z-shaped and right-angle structure, connecting the cathode disk and the elastic member to form a cathode film distance support and conductive structure.

Benefits of technology

Improves anti-reverse pressure and current capability, reduces manufacturing costs, and protects the cathode electrode grid in emergencies to prevent voltage rise.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a cathode membrane polar distance supporting and conducting structure, which belongs to the field of electrolyzers and comprises an electrolytic cell frame, the front side and the rear side of the electrolytic cell frame are respectively connected with a cathode disc and an anode disc, an elastic piece is arranged on the front side of the cathode disc, and the rear side of the elastic piece is connected with the front side of the cathode disc through a supporting piece. The front side of the elastic piece is connected with a cathode electrode net, the supporting piece comprises a first supporting frame, two second supporting frames and two third supporting frames, the two second supporting frames are located on the left side and the right side of the first supporting frame respectively, and the two third supporting frames are located on the upper side and the lower side of the first supporting frame respectively; the first supporting frame is of a convex structure, the second supporting frame is of a Z-shaped structure, and the third supporting frame is of a right-angle structure. Raney nickel active coatings are arranged on the first supporting frame, the second supporting frame and the third supporting frame. According to the utility model, the reverse pressure resistance is considered, the manufacturing cost is reduced, and the reverse current resistance is better.
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Description

Technical Field

[0001] The utility model relates to a cathode membrane pole distance support and conductive structure, belonging to the field of electrolysis devices. Background Art

[0002] As the core equipment for caustic soda production, electrolytic cells have been continuously innovated and improved to meet the needs of energy conservation, consumption reduction, safety and environmental protection. The new generation of bipolar natural circulation high-density membrane electrode-gap electrolytic cells has become the mainstream product.

[0003] However, the structure of each electrolyzer is different, and its suitable membrane pole distance structure is also different. The most common one is rib plate plus bottom mesh plus nickel wire woven corrugated elastic mesh. Starting from the concept of reducing the pressure of the elastic structure on the ion membrane to protect the ion membrane and reduce the flow resistance of the medium and reduce the temperature of the membrane area, a variety of structures have been developed one after another. For example, different rib plates and bottom meshes directly use spring sheets or elastomers, and there are many forms such as elastic sheets instead of nickel wire corrugated mesh. After a period of use, it was found that there are still many problems. For example, if spring sheets or elastomers are used directly, once the operating system fails, the process will be in normal operation. The pressure in the cathode chamber is greater than that in the anode chamber. If pressure fluctuations occur and a reverse pressure difference occurs, the spring sheet will be easily flattened, causing the electrolytic cell membrane pitch structure to fail. At the same time, the cathode electrode mesh loses support, conductivity fails, the voltage rises rapidly, and it cannot continue to be used. The structure using ribs and bottom mesh plus spring sheets or elastomers has a stronger ability to withstand reverse pressure differences. If the reverse pressure is not particularly large or repeated many times, its performance will not drop significantly. However, due to the high price of nickel materials, its manufacturing cost is high. For example, a 2.7m² unit cell requires more than 20 kilograms of nickel plates than the former.

[0004] Therefore, there is a need for a cathode film pole support and conductive structure that takes into account resistance to reverse pressure, reduces manufacturing costs, and has better resistance to reverse current. Summary of the Invention

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies of the prior art, to provide a cathode film pole distance support and conductive structure, taking into account the resistance to reverse pressure, reducing the manufacturing cost, and having better resistance to reverse current.

[0006] The technical solution adopted by the present invention to solve the above problems is as follows: a cathode membrane pole distance support and conductive structure, including an electrolytic cell frame, the front and rear sides of the electrolytic cell frame are respectively connected to a cathode disk and an anode disk, an elastic member is provided on the front side of the cathode disk, the rear side of the elastic member is connected to the front side of the cathode disk through a support member, the front side of the elastic member is connected to a cathode electrode network, the support member includes a first support frame, two second support frames and two third support frames, the two second support frames are respectively located on the left and right sides of the first support frame, and the two third support frames are respectively located on the upper and lower sides of the first support frame;

[0007] The first support frame is a convex structure, the second support frame is a Z-shaped structure, and the third support frame is a right-angle structure;

[0008] The first support frame, the second support frame and the third support frame are all provided with a Raney nickel active coating.

[0009] Preferably, there are multiple first support frames, and the multiple first support frames are distributed from left to right.

[0010] Preferably, the first support frame includes a first front support part, two first rear support parts and two first connecting parts, the two first connecting parts are respectively located on the left and right sides of the first front support part, the left and right sides of the first front support part are respectively connected to the front ends of the two first connecting parts, the two first rear support parts correspond one to one with the two first connecting parts, the first rear support part is connected to the rear end of the first connecting part, the first rear support part is located on the side of the first connecting part away from the first front support part, the first front support part and the first rear support part are distributed front and back, the front side of the first front support part is connected to the elastic part, and the rear side of the first rear support part is connected to the cathode disk.

[0011] Preferably, the Raney nickel active coating on the first support frame is arranged on a side where the two first connecting portions are close to each other.

[0012] Preferably, the second support frame includes a second front support portion, a second rear support portion and a second connecting portion, the second front support portion and the second rear support portion are respectively located on the left and right sides of the second connecting portion, the second front support portion is arranged at the front end of the second connecting portion, and the second rear support portion is arranged at the rear end of the second connecting portion, the front side of the second front support portion is connected to the elastic member, and the rear side of the second rear support portion is connected to the cathode disk.

[0013] Preferably, the Raney nickel active coating on the second support frame is arranged on a side of the second connecting portion away from the second rear supporting portion.

[0014] Preferably, the third support frame includes a third support portion and a third connecting portion, the third support portion is located on one side of the front end of the third connecting portion, the front side of the third support portion is connected to the elastic member, and the rear side of the third connecting portion is connected to the cathode disk.

[0015] Preferably, the Raney nickel active coating on the third support frame is arranged on a side of the third connecting portion close to the third supporting portion.

[0016] Preferably, the support member is a diamond-shaped plate mesh formed by expanding and stretching a nickel plate, and the thickness of the nickel plate is 1 mm.

[0017] Preferably, the nickel plate has a thickness of 1 mm.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The utility model provides a cathode film pole distance support and conductive structure, which takes into account the resistance to reverse pressure, reduces the manufacturing cost, and has better resistance to reverse current. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a cathode film pole distance support and conductive structure of the utility model;

[0021] Figure 2 is a structural diagram of a support member;

[0022] Figure 3 is a structural schematic diagram of the first support frame;

[0023] Figure 4 is a structural schematic diagram of the second support frame;

[0024] Figure 5 Schematic diagram of the structure of the third support frame.

[0025] in:

[0026] Electrolytic cell frame 1, cathode disk 2, anode disk 3, elastic member 4, support member 5, cathode electrode mesh 6;

[0027] A first support frame 51, a second support frame 52, and a third support frame 53;

[0028] a first front supporting portion 511 , a first rear supporting portion 512 , and a first connecting portion 513 ;

[0029] a second front supporting portion 521 , a second rear supporting portion 522 , and a second connecting portion 523 ;

[0030] A third supporting portion 531 and a third connecting portion 532 . DETAILED DESCRIPTION

[0031] like Figure 1-5 As shown, a cathode membrane pole support and conductive structure in this embodiment includes an electrolytic cell frame 1, with a cathode disk 2 and an anode disk 3 connected to the front and rear sides of the electrolytic cell frame 1, respectively. An elastic member 4 is provided on the front side of the cathode disk 2, and the rear side of the elastic member 4 is connected to the front side of the cathode disk 2 via a support member 5. The front side of the elastic member 4 is connected to a cathode electrode mesh 6;

[0032] The support member 5 is connected to the cathode disk 2 by resistance welding or argon arc welding;

[0033] The support member 5 includes a first support frame 51, two second support frames 52 and two third support frames 53. The two second support frames 52 are respectively located on the left and right sides of the first support frame 51, and the two third support frames 53 are respectively located on the upper and lower sides of the first support frame 51.

[0034] The first support frame 51 is a convex structure, the second support frame 52 is a Z-shaped structure, and the third support frame 53 is a right-angle structure;

[0035] The first support frame 51, the second support frame 52 and the third support frame 53 are all provided with a Raney nickel active coating;

[0036] There are multiple first support frames 51, and the multiple first support frames 51 are evenly distributed from left to right;

[0037] The first supporting frame 51 includes a first front supporting portion 511, two first rear supporting portions 512 and two first connecting portions 513, the two first connecting portions 513 are respectively located on the left and right sides of the first front supporting portion 511, the left and right sides of the first front supporting portion 511 are respectively connected to the front ends of the two first connecting portions 513, the two first rear supporting portions 512 correspond to the two first connecting portions 513 one-to-one, the first rear supporting portion 512 is connected to the rear ends of the first connecting portions 513, the first rear supporting portion 512 is located on a side of the first connecting portion 513 away from the first front supporting portion 511, the first front supporting portion 511 and the first rear supporting portion 512 are distributed front and back, the front side of the first front supporting portion 511 is connected to the elastic member 4, and the rear side of the first rear supporting portion 512 is connected to the cathode disk 2;

[0038] The second support frame 52 includes a second front support portion 521, a second rear support portion 522 and a second connecting portion 523. The second front support portion 521 and the second rear support portion 522 are respectively located on the left and right sides of the second connecting portion 523. The second front support portion 521 is arranged at the front end of the second connecting portion 523, and the second rear support portion 522 is arranged at the rear end of the second connecting portion 523. The front side of the second front support portion 521 is connected to the elastic member 4, and the rear side of the second rear support portion 522 is connected to the cathode disk 2.

[0039] The third support frame 53 includes a third support portion 531 and a third connecting portion 532. The third support portion 531 is located on one side of the front end of the third connecting portion 532. The front side of the third support portion 531 is connected to the elastic member 4, and the rear side of the third connecting portion 532 is connected to the cathode disk 2.

[0040] The Raney nickel active coating on the first support frame 51 is provided on a side where the two first connecting portions 513 are close to each other;

[0041] The Raney nickel active coating on the second support frame 52 is arranged on a side of the second connecting portion 523 away from the second rear support portion 522;

[0042] The Raney nickel active coating on the third support frame 53 is arranged on a side of the third connecting portion 532 close to the third supporting portion 531;

[0043] The support member 5 is a diamond-shaped plate mesh formed by expanding and stretching a nickel plate, and the thickness of the nickel plate is 1 mm;

[0044] The cathode membrane pole support and conductive structure have supporting strength and conductive effect, which meet the requirements of the operating conditions, and the cost is greatly reduced compared with the structure of stiffener plus bottom mesh. In particular, the Raney nickel active coating can preferentially absorb and digest the reverse current when a reverse current is generated in an emergency stop, etc., and can play a good protective role for the cathode electrode mesh 6.

[0045] In addition to the above embodiments, the present invention also includes other implementation methods. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of protection of the claims of the present invention.

Claims

1. A cathode membrane pole distance support and conductive structure, comprising an electrolytic cell frame (1), wherein the front and rear sides of the electrolytic cell frame (1) are respectively connected to a cathode disk (2) and an anode disk (3), an elastic member (4) is provided on the front side of the cathode disk (2), the rear side of the elastic member (4) is connected to the front side of the cathode disk (2) via a support member (5), and the front side of the elastic member (4) is connected to a cathode electrode mesh (6), characterized in that: The support member (5) comprises a first support frame (51), two second support frames (52) and two third support frames (53), wherein the two second support frames (52) are respectively located on the left and right sides of the first support frame (51), and the two third support frames (53) are respectively located on the upper and lower sides of the first support frame (51); The first support frame (51) is a convex structure, the second support frame (52) is a Z-shaped structure, and the third support frame (53) is a right-angle structure; The first support frame (51), the second support frame (52) and the third support frame (53) are all provided with a Raney nickel active coating.

2. A cathode film spacing support and conductive structure according to claim 1, characterized in that: There are multiple first support frames (51), and the multiple first support frames (51) are distributed from left to right.

3. The cathode film spacing support and conductive structure according to claim 1, characterized in that: The first support frame (51) comprises a first front support portion (511), two first rear support portions (512) and two first connecting portions (513), the two first connecting portions (513) being located on the left and right sides of the first front support portion (511), the left and right sides of the first front support portion (511) being connected to the front ends of the two first connecting portions (513), the two first rear support portions (512) being in one-to-one correspondence with the two first connecting portions (513), the first rear support portion (512) being connected to the rear ends of the first connecting portions (513), the first rear support portion (512) being located on a side of the first connecting portion (513) away from the first front support portion (511), the first front support portion (511) and the first rear support portion (512) being distributed front to back, the front side of the first front support portion (511) being connected to the elastic member (4), and the rear side of the first rear support portion (512) being connected to the cathode disk (2).

4. A cathode film pole distance support and conductive structure according to claim 3, characterized in that: The Raney nickel active coating on the first support frame (51) is arranged on a side where the two first connecting portions (513) are close to each other.

5. The cathode film pole distance support and conductive structure according to claim 1, characterized in that: The second support frame (52) comprises a second front support portion (521), a second rear support portion (522) and a second connecting portion (523), wherein the second front support portion (521) and the second rear support portion (522) are respectively located on the left and right sides of the second connecting portion (523), the second front support portion (521) is arranged at the front end of the second connecting portion (523), and the second rear support portion (522) is arranged at the rear end of the second connecting portion (523), the front side of the second front support portion (521) is connected to the elastic member (4), and the rear side of the second rear support portion (522) is connected to the cathode disk (2).

6. A cathode film pole distance support and conductive structure according to claim 5, characterized in that: The Raney nickel active coating on the second support frame (52) is arranged on a side of the second connecting portion (523) away from the second rear support portion (522).

7. The cathode film pole support and conductive structure according to claim 1, characterized in that: The third support frame (53) comprises a third support portion (531) and a third connecting portion (532), wherein the third support portion (531) is located on one side of the front end of the third connecting portion (532), the front side of the third support portion (531) is connected to the elastic member (4), and the rear side of the third connecting portion (532) is connected to the cathode disk (2).

8. A cathode film pole distance support and conductive structure according to claim 7, characterized in that: The Raney nickel active coating on the third support frame (53) is arranged on a side of the third connecting portion (532) close to the third supporting portion (531).

9. The cathode film pole distance support and conductive structure according to claim 1, characterized in that: The support member (5) is a diamond-shaped plate mesh formed by expanding and stretching a nickel plate.

10. A cathode film pole distance support and conductive structure according to claim 9, characterized in that: The thickness of the nickel plate is 1 mm.