CN216427422U

CN216427422U - Welding end plate for water electrolysis bath

Info

Publication number: CN216427422U
Application number: CN202123155623.0U
Authority: CN
Inventors: 孙凯; 迟军; 俞红梅; 邵志刚; 韦世慧
Original assignee: Dalian Institute of Chemical Physics of CAS
Current assignee: Dalian Institute of Chemical Physics of CAS
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-05-03
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses a water electrolysis trough is with welding end plate belongs to water electrolysis technical field. The welded end plate steel structure comprises a top plate, a bottom plate, a vertical plate assembly, a runner pipe and a bolt support pipe; wherein the runner pipe runs through roof and bottom plate, and the riser subassembly is located and plays the effect of connecting and strengthening the bulk rigidity in the middle of roof and the bottom plate. All the parts are welded into a whole, so that the integral strength and rigidity are ensured. The welded end plate is particularly suitable for high-pressure and large-area water electrolysis occasions.

Description

Welding end plate for water electrolysis bath

Technical Field

The utility model belongs to the technical field of water electrolysis hydrogen manufacturing, concretely relates to welding end plate for water electrolyser.

Background

With the development of water electrolysis technology, the size of the electrolytic cell is larger and larger, and the control of the whole deformation of the electrolytic cell is more and more difficult. Wherein the deformation of the end plates directly affects the electrolysis efficiency of the electrolysis cell. Therefore, the end plates of the electrolytic cell are simple and reliable, have small deformation, light weight and convenient assembly.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of the prior art and providing a welding end plate for a water electrolyzer, which has light weight, simple welding structure and high precision. The problem of large deformation when bearing pressure can be solved. Meanwhile, when the electrolytic cell is assembled, the assembling difficulty can be reduced.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a welding end plate for a water electrolyzer comprises a top plate, a bottom plate, a vertical plate assembly, a runner pipe and a bolt support pipe; the vertical plate assembly is positioned between the top plate and the bottom plate and is welded with the top plate and the bottom plate into a whole; the runner pipe penetrates through the top plate and the bottom plate and is welded with the top plate and the bottom plate; the bolt support pipe penetrates through the top plate and the bottom plate and is welded with the top plate and the bottom plate.

Furthermore, in the above technical solution, the top plate is located at the uppermost part of the vertical plate assembly, the edge is provided with a circle of small round openings for passing through the bolt supporting pipe, and the inner side of the edge is provided with a large round hole for passing through the runner pipe.

Furthermore, in the above technical scheme, the bottom plate is located at the lowest part of the vertical plate assembly, the edge of the bottom plate is provided with a circle of small round openings for penetrating through the bolt supporting pipe, and the inner side of the edge is provided with a large round hole for penetrating through the runner pipe.

Furthermore, in the above technical solution, the vertical plate assemblies are in an intercrossing structure and are positioned between the top plate and the bottom plate for connection.

Further, in the above technical solution, the runner pipe and the bolt support pipe pass through the top plate and the bottom plate, and respectively serve as a fluid flow passage and a bolt fastening support.

Further, in the above technical solution, the flow channel tube includes two hydrogen outflow channels, a water inflow channel and a water/oxygen outflow channel.

Advantageous effects

1. Compared with a solid plate end plate, the novel welding end plate for the water electrolyzer has the advantages of low weight, small processing difficulty and less cutting waste.

2. Compared with a clamping mechanism type end plate, the novel welding end plate for the water electrolyzer has the advantages of simple structure, simple assembly and convenient maintenance.

3. The proper vertical plate structure and the bolt support pipe ensure the strength and rigidity of the welding end plate, thereby ensuring the performance of the electrolytic cell.

Drawings

Fig. 1 is a schematic diagram of the welding end plate structure for the water electrolyzer of the present invention.

Fig. 2 is a schematic view of the internal cross-sectional structure of the welding end plate for a water electrolyzer of the present invention.

Wherein, 1, a top plate, 11, a water inlet, 12, a hydrogen outlet, 13, a water/oxygen outlet and 14, a hydrogen outlet; 2. a base plate; 3. a vertical plate component; 4. supporting the pipe by using a bolt; 5. a runner pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In addition, the big and small sizes of the big round hole and the small round opening are only relative speaking.

Example 1

A welding end plate for a water electrolyzer comprises a top plate 1, a bottom plate 2, a vertical plate assembly 3, a bolt supporting pipe 4 and a runner pipe 5; the vertical plate component 3 is positioned between the top plate 1 and the bottom plate 2 and is welded with the top plate 1 and the bottom plate 2 into a whole; the runner pipe 5 penetrates through the top plate 1 and the bottom plate 2 and is welded with the top plate and the bottom plate; the bolt support pipe 4 penetrates through the top plate 1 and the bottom plate 2 and is welded with the top plate and the bottom plate. The top plate 1 is located the top of the vertical plate component 3, a circle of small round opening is formed in the edge and used for penetrating through the bolt supporting pipe 4, and a large round hole is formed in the inner side of the edge and used for penetrating through the runner pipe 5. The bottom plate 2 is located the bottom of the vertical plate component 3, a circle of small round opening is formed in the edge and used for penetrating through the bolt supporting pipe 4, and a large round hole is formed in the inner side of the edge and used for penetrating through the runner pipe 5. The vertical plate component 3 is an intercrossing structure and is positioned between the top plate 1 and the bottom plate 2 for connection. The runner pipe 5 and the bolt supporting pipe 4 pass through the top plate 1 and the bottom plate 2 to serve as a flow passage for fluid and a bolt fastening support, respectively. The flow channel pipe 5 includes two hydrogen gas outflow channels, a water inflow channel, and a water/oxygen gas outflow channel.

Example 2

The welding end plate is positioned at the top as the upper end plate, and the bipolar plates and the membrane electrode are alternately arranged together to form a plurality of pairs of electrolysis small chamber groups. The current collecting plate and the insulating plate are sequentially arranged at the top and the bottom of the small electrolysis chamber group, and finally the lower end plate is arranged at the bottom. The water inlet 11 and the water/oxygen outlet 13 serve as inlets and outlets for the internal circulation, and the hydrogen outlet 12 and the hydrogen outlet 14 serve as outlets for the generation of hydrogen. Thus constituting hydrogen production of 25Nm³H electrolytic cell. Through performance experiments, the performance is the same as that of the normal pressure when the working pressure is 4MPa, and the structural performance of the end plate meets the use requirement.

The foregoing embodiments are provided for illustration and description of the invention and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed.

Claims

1. The welding end plate for the water electrolyzer is characterized by comprising a top plate (1), a bottom plate (2), a vertical plate assembly (3), a bolt supporting pipe (4) and a runner pipe (5); the vertical plate assembly (3) is positioned between the top plate (1) and the bottom plate (2) and is welded with the top plate (1) and the bottom plate (2) into a whole; the runner pipe (5) penetrates through the top plate (1) and the bottom plate (2) and is welded with the top plate and the bottom plate; the bolt support pipe (4) penetrates through the top plate (1) and the bottom plate (2) and is welded with the top plate and the bottom plate.

2. A welded end plate for water electrolysers, in accordance with claim 1, characterized in that the top plate (1) is provided with a circular opening at its edge for the passage of the bolt support tube (4) and a circular opening at its inner side for the passage of the runner tube (5).

3. A welded end plate for water electrolysers as claimed in claim 1, characterized in that the base plate (2) is provided with a circular opening at its edge for the passage of the bolt support tube (4) and a circular opening at its inner side for the passage of the runner tube (5).

4. A welded end plate for water electrolysers as claimed in claim 1 wherein said riser assemblies (3) are of interdigitated configuration.

5. A welded end plate for a water electrolyser as claimed in claim 1, wherein said runner tubes (5) comprise two hydrogen outflow channels, one water inflow channel and one water/oxygen outflow channel.