Combined end plate of embedded electrode plate for low-pressure hydrogen production electrolytic cell

Abstract

The utility model discloses a combined end plate of an embedded electrode plate for a low-pressure hydrogen production electrolytic tank, which relates to the technical field of electrolytic tank end plates, and comprises a frame, and through the form of an electrode plate body and the embedded electrode plate for the electrolytic tank end plate, the process is simple, the cost is reduced, and the production efficiency is improved. The steps on the periphery of the electrode plate are aligned with the electrode plate barrier strip and enter the other side of the frame, the fixing bolts are screwed to enable the pressing blocks to push the electrode plate to be attached to the electrode plate barrier strip, the electrode plate body is clamped and fixed, and the electrode plate body is attached to an electrolytic cell chamber nickel plate on the other side, so that it is guaranteed that an electrolytic current channel is established; the fixing bolts of the pressing blocks are adjusted, so that the nickel plate of the cathode or anode electrolysis chamber can be attached to the electrode plate and cannot be pressed to deform, and the situation that the overall performance is affected due to local overheating or insufficient electrochemical reaction caused by uneven distribution of electrolysis current due to deformation of the nickel plate is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cell end plates, in particular to a combined end plate of embedded electrode plates for a low-pressure hydrogen electrolytic cell. Background Art

[0002] Existing low-pressure hydrogen electrolyzers are composed of a cell body, an anode and a cathode, and most of them use a diaphragm to separate the anode chamber and the cathode chamber. The electrode plate is a key component for electrolysis in the electrolyzer. They are usually divided into a single cathode or anode electrolysis chamber and a combined electrode plate. They are installed at both ends of the electrolyzer group (cathode end or anode end) to transfer current and promote the occurrence of electrolysis reaction. The combined end plate of the utility model is to embed the electrode plate combination into the electrolyzer, and no additional electrolyzer combined end plate is manufactured. It can provide better current distribution and stability, and at the same time facilitate the installation and maintenance of the electrode plate, and also save costs.

[0003] When installing the traditional electrolytic cell end plate assembly, the electrode plates need to fit the specially made cathode and anode electrolytic cell nickel plates. At this time, the nickel plates are easily compressed and deformed because they cannot be adjusted. The deformation of the nickel plates can easily lead to uneven current distribution thereon, causing local overheating or insufficient electrochemical reaction, affecting the overall performance. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a combined end plate of embedded electrode plates for a low-pressure hydrogen electrolyzer, which solves the technical problem that when the end plates are assembled and installed, the electrode plates need to be close to the anode and cathode nickel plates on the other side. At this time, the anode and cathode nickel plates are easily compressed and deformed. The deformation of the nickel plates can easily lead to uneven current distribution on the nickel plates, causing local overheating or insufficient electrochemical reaction, affecting the overall performance.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A combined end plate of embedded electrode plates for a low-pressure hydrogen production electrolyzer comprises a frame, a nickel plate is placed on the outside of the frame, an electrode plate body is placed on a side of the frame close to the nickel plate, two copper plate electrodes are arranged on a side of the electrode plate body away from the nickel plate, the electrode plate body is provided with four steps, a plate baffle is fixedly installed on the frame close to each step, the plate baffle is slidably connected to the inside of the step, a fixing mechanism is arranged on a side of the frame away from the nickel plate, each fixing mechanism comprises a baffle 1, a baffle 2, a clamping block, a screw hole and a fixing bolt, baffle 1 is fixedly installed on the outside of the frame, baffle 2 is fixedly installed on the outside of the electrode plate body, there are a plurality of clamping blocks, each of which is slidably connected to the outside of the electrode plate body, each clamping block is located between baffle 1 and baffle 2, there are a plurality of screw holes, the screw holes are arranged on the outside of the clamping block, there are a plurality of fixing bolts, the fixing bolts are threadedly connected to the inside of the screw holes.

[0009] A bolt column is fixedly installed at the bottom of the frame, and a plurality of threaded holes are provided on the outside of the bolt column. A clamping bolt is threadedly connected to the inside of each threaded hole, and the clamping bolt is fitted with the outside of the electrode plate body. A gasket is movably connected to the outside of each fixed bolt and the clamping bolt, and the gasket is fitted on the outside of baffle bar 1, baffle bar 2 and the bolt column. A mounting hole is provided on one side of the electrode plate body close to each copper plate electrode, and a mounting bolt is slidably connected to the inside of each mounting hole, and a mounting nut is threadedly connected to the outside of each mounting bolt. The copper plate electrode is slidably connected to the outside of the mounting bolt, and the mounting nut is fitted with the outside of the copper plate electrode.

[0010] Preferably, two groups of breathing holes are opened on the outside of the electrode plate body, one group of breathing holes has two breathing holes, and the two groups of breathing holes are located on both sides of the two copper plate electrodes.

[0011] Preferably, each of the plate baffles is composed of an L-shaped baffle and a rectangular baffle, and the rectangular baffle is located inside the step.

[0012] (III) Beneficial effects

[0013] 1. By setting the electrode plate body and matching the fixing bolts, the electrolytic cell end plate is in the form of an embedded electrode plate, and the original process that requires the additional preparation of a combined end plate device of the electrolytic cell chamber and the electrode plate is abandoned, so that the process is simple, the cost is reduced, and it has a certain promotion value. When in use, the steps around the electrode plate body are aligned with the electrode plate baffle bar to enter the other side of the frame, and the fixing bolts are tightened to make the clamping block push the electrode plate body to fit with the electrode plate baffle bar. At this time, the electrode plate body is clamped and fixed, and the electrode plate body is close to the nickel plate of the electrolytic cell chamber on the other side, thereby ensuring the establishment of an electrolytic current channel. Under the action of the electrode plate baffle bar and the clamping block, the fixing bolts of the clamping block are adjusted so that the nickel plate of the cathode or anode electrolytic chamber can fit the electrode plate without being compressed and deformed, thereby preventing the uneven distribution of electrolytic current caused by the deformation of the nickel plate from causing local overheating or insufficient electrochemical reaction, thereby affecting the overall performance.

[0014] 2. After the electrode plate body is clamped and fixed by the electrode plate baffle and the clamping block through the gasket and the clamping bolt, the gasket is slidably connected to the outside of the clamping bolt. At this time, the clamping bolt is threaded into the inside of the threaded hole until the clamping bolt fits with the outside of the electrode plate body, thereby increasing the stability of the electrode plate body installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 For this utility model Figure 1 The structural diagram of the middle electrode plate body;

[0018] Figure 3 For this utility model Figure 1 Structural diagram of the middle hold-down bolt;

[0019] Figure 4 For this utility model Figure 3 A is an enlarged structural diagram.

[0020] Legend: 1. Frame; 2. Nickel plate; 3. Electrode plate body; 4. Copper plate electrode; 5. Step; 6. Plate baffle; 7. Baffle one; 8. Baffle two; 9. Clamping block; 10. Screw hole; 11. Fixing bolt; 12. Bolt column; 13. Threaded hole; 14. Clamping bolt; 15. Gasket; 16. Breathing hole; 17. Mounting hole; 18. Mounting bolt; 19. Mounting nut. DETAILED DESCRIPTION

[0021] The embodiment of the present application provides a combined end plate of embedded electrode plates for a low-pressure hydrogen electrolyzer, which effectively solves the technical problem that when the end plates are assembled and installed, the electrode plates need to be close to the anode and cathode nickel plates 2 on the other side. At this time, the anode and cathode nickel plates 2 are easily compressed and deformed. The deformation of the nickel plates 2 can easily lead to uneven current distribution on the nickel plates 2, causing local overheating or insufficient electrochemical reaction, thereby affecting the overall performance.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 The technical solution in the embodiment of the present application effectively solves the problem that the electrode plate needs to be close to the anode and cathode nickel plates 2 on the other side when the end plates are assembled and installed. At this time, the anode and cathode nickel plates 2 are easily compressed and deformed. The deformation of the nickel plates 2 easily leads to uneven current distribution on the nickel plates 2, causing local overheating or insufficient electrochemical reaction, and affecting the overall performance. The overall idea is as follows:

[0024] In view of the problems existing in the prior art, the utility model provides a combined end plate of an embedded electrode plate for a low-pressure hydrogen electrolyzer, the combined end plate of the embedded electrode plate for a low-pressure hydrogen electrolyzer comprises a frame 1, a nickel plate 2 is placed on the outside of the frame 1, an electrode plate body 3 is placed on the side of the frame 1 close to the nickel plate 2, two copper plate electrodes 4 are arranged on the side of the electrode plate body 3 away from the nickel plate 2, the electrode plate body 3 is provided with four steps 5, the frame 1 is fixedly installed with a plate baffle 6 near each step 5, the plate baffle 6 is slidably connected to the inside of the step 5, the frame 1 is away from the nickel plate 2 is provided with a fixing mechanism. Each fixing mechanism includes a baffle 1 7, a baffle 2 8, a clamping block 9, a screw hole 10 and a fixing bolt 11. The baffle 1 7 is fixedly installed on the outside of the frame 1, the baffle 2 8 is fixedly installed on the outside of the electrode plate body 3, there are a plurality of clamping blocks 9, each of which is slidably connected to the outside of the electrode plate body 3, and each of which is located between the baffle 1 7 and the baffle 2 8. There are a plurality of screw holes 10, which are opened on the outside of the clamping block 9, and there are a plurality of fixing bolts 11, which are threadedly connected to the inside of the screw holes 10.

[0025] By setting the electrode plate body 3 and cooperating with the fixing bolts 11, the electrolytic cell end plate is in the form of an embedded electrode plate, and the original process that requires the additional preparation of a combined end plate device of the electrolytic cell chamber and the electrode plate is abandoned, so that the process is simple, the cost is reduced, and it has a certain promotion value. When in use, the steps 5 around the electrode plate body 3 are aligned with the electrode plate baffle 6 to enter the other side of the frame 1, and the fixing bolts 11 are tightened to make the clamping block 9 push the electrode plate body 3 to fit with the electrode plate baffle 6. At this time, the electrode plate body 3 is clamped and fixed, and the electrode plate body 3 is close to the nickel plate 2 of the electrolytic cell chamber on the other side, so as to ensure the establishment of an electrolytic current channel. Under the action of the electrode plate baffle 6 and the clamping block 9, the fixing bolts 11 of the clamping block 9 are adjusted, so that the nickel plate 2 of the cathode or anode electrolytic chamber can fit the electrode plate without being compressed and deformed, thereby preventing the uneven distribution of electrolytic current caused by the deformation of the nickel plate 2 from causing local overheating or insufficient electrochemical reaction, thereby affecting the overall performance.

[0026] A bolt column 12 is fixedly installed at the bottom of the frame 1, and a plurality of threaded holes 13 are opened on the outside of the bolt column 12. A clamping bolt 14 is threadedly connected to the inside of each threaded hole 13. The clamping bolt 14 fits with the outside of the electrode plate body 3 to increase the stability of the electrode plate body 3. A gasket 15 is movably connected to the outside of each of the gaskets 15. The gasket 15 fits on the outside of the baffle 1 7, the baffle 2 8 and the bolt column 12. The gasket 15 can help disperse the pressure between the fixing bolt 11 and the clamping bolt 14 on the fitting surface to prevent damage caused by excessive local pressure. Through the gasket 15, the clamping bolt 14 is cooperated with the electrode plate baffle 6 and the clamping block 9. After the electrode plate body 3 is clamped and fixed, the gasket 15 is slidably connected to the outside of the clamping bolt 14. At this time, the clamping bolt 14 is threadedly connected to the inside of the threaded hole 13 until the clamping bolt 14 fits with the outside of the electrode plate body 3, thereby increasing the stability of the installation of the electrode plate body 3.

[0027] A mounting hole 17 is provided on one side of the electrode plate body 3 close to each copper plate electrode 4, and a mounting bolt 18 is slidably connected to the inside of each mounting hole 17, and a mounting nut 19 is threadedly connected to the outside of each mounting bolt 18. The copper plate electrode 4 is slidably connected to the outside of the mounting bolt 18, and the mounting nut 19 fits with the outside of the copper plate electrode 4 to facilitate the disassembly and assembly of the copper plate electrode 4. Two groups of breathing holes 16 are provided on the outside of the electrode plate body 3, and one group of breathing holes 16 has two. The two groups of breathing holes 16 are located on both sides of the two copper plate electrodes 4 to facilitate air circulation and prevent pressure accumulation due to temperature changes or mechanical operations. Each of the pole plate baffles 6 is composed of an L-shaped baffle and a rectangular baffle. The rectangular baffle is located inside the step 5 to facilitate the restriction and clamping of the pole plate baffle 6.

[0028] Working principle:

[0029] By setting the electrode plate body 3, with the fixing bolts 11, the steps 5 around the electrode plate body 3 are aligned with the electrode plate baffle 6 so that one end of the electrode plate baffle 6 enters the inside of the step 5, and then the fixing bolts 11 are rotated so that the fixing bolts 11 are threadedly connected inside the screw holes 10 so that the clamping block 9 pushes the electrode plate body 3 so that the electrode plate body 3 and the electrode plate baffle 6 are fitted. At this time, the electrode plate body 3 is clamped and fixed, and the gasket 15 is slidably connected to the outside of the clamping bolt 14. At this time, the clamping bolt 14 is threadedly connected to the inside of the threaded hole 13 until the clamping bolt 14 fits the outside of the electrode plate body 3, thereby increasing the stability of the installation of the electrode plate body 3;

[0030] When the electrode plate body 3 is close to the cathode and anode nickel plates 2 on the other side, under the action of the electrode plate baffle 6 and the clamping block 9, the fixing bolt 11 of the clamping block 9 is adjusted so that the nickel plate 2 of the cathode or anode electrolysis chamber can fit the electrode plate without being compressed and deformed, thereby preventing the deformation of the nickel plate 2 from causing uneven distribution of electrolysis current, resulting in local overheating or insufficient electrochemical reaction, thereby affecting the overall performance.

[0031] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A combined end plate of an embedded electrode plate for a low-pressure hydrogen electrolyzer, comprising a frame (1), a nickel plate (2) being placed outside the frame (1), characterized in that: An electrode plate body (3) is placed on a side of the frame (1) close to the nickel plate (2), two copper plate electrodes (4) are arranged on a side of the electrode plate body (3) away from the nickel plate (2), four steps (5) are provided on the electrode plate body (3), and an electrode plate baffle (6) is fixedly installed on the frame (1) close to each step (5), and the electrode plate baffle (6) is slidably connected to the inside of the step (5), and a fixing mechanism is arranged on a side of the frame (1) away from the nickel plate (2); Each fixing mechanism comprises a first stopper bar (7), a second stopper bar (8), a pressing block (9), a screw hole (10) and a fixing bolt (11); Baffle bar 1 (7) is fixedly mounted on the outside of the frame (1), baffle bar 2 (8) is fixedly mounted on the outside of the electrode plate body (3), there are a plurality of clamping blocks (9), each of which is slidably connected to the outside of the electrode plate body (3), each of which is located between baffle bar 1 (7) and baffle bar 2 (8), there are a plurality of screw holes (10), the screw holes (10) are opened on the outside of the clamping blocks (9), there are a plurality of fixing bolts (11), and the fixing bolts (11) are threadedly connected to the inside of the screw holes (10).

2. The combined end plate of the embedded electrode plate for the low-pressure hydrogen electrolyzer according to claim 1, characterized in that: A bolt column (12) is fixedly installed at the bottom of the frame (1), a plurality of threaded holes (13) are provided on the outside of the bolt column (12), and a clamping bolt (14) is threadedly connected inside each threaded hole (13); The clamping bolt (14) is fitted to the outside of the electrode plate body (3).

3. The combined end plate of the embedded electrode plate for the low-pressure hydrogenation electrolyzer according to claim 1, characterized in that: Each of the fixing bolts (11) and the clamping bolts (14) is movably connected to a gasket (15) on its exterior; The gasket (15) is attached to the outside of the first baffle bar (7), the second baffle bar (8) and the bolt column bar (12).

4. The combined end plate of the embedded electrode plate for the low-pressure hydrogenation electrolyzer according to claim 1, characterized in that: The electrode plate body (3) is provided with a mounting hole (17) on one side close to each copper plate electrode (4), a mounting bolt (18) is slidably connected inside each mounting hole (17), and a mounting nut (19) is threadedly connected outside each mounting bolt (18); The copper plate electrode (4) is slidably connected to the outside of the mounting bolt (18), and the mounting nut (19) is fitted to the outside of the copper plate electrode (4).

5. The combined end plate of the embedded electrode plate for the low-pressure hydrogenation electrolyzer according to claim 1, characterized in that: Two groups of breathing holes (16) are provided on the outside of the electrode plate body (3), and each group of breathing holes (16) has two; The two groups of breathing holes (16) are located on both sides of the two copper plate electrodes (4).

6. The combined end plate of the embedded electrode plate for the low-pressure hydrogenation electrolyzer according to claim 1, characterized in that: Each of the plate baffles (6) is composed of an L-shaped baffle and a rectangular baffle; The rectangular blocking bar is located inside the step (5).

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