CN217298026U

CN217298026U - Anti-clogging cathode plate and electrolytic cell comprising same

Info

Publication number: CN217298026U
Application number: CN202220933814.0U
Authority: CN
Inventors: 吴伟; 陈合金; 林永春; 余瑞兴
Original assignee: Guangdong Cawolo Hydrogen Technology Co Ltd
Current assignee: Guangdong Cawolo Hydrogen Technology Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-08-26
Anticipated expiration: 2032-04-20

Abstract

The utility model relates to a prevent negative plate of jam and contain its electrolysis trough, including being used for connecting the external through-hole of giving vent to anger, the fretwork is provided with the hydrogen passway that supplies the hydrogen circulation on the negative plate, through the switch-on passageway switch-on between the tip of hydrogen passway and the through-hole of giving vent to anger, and the lateral surface of negative plate or the inside of negative plate are located to the switch-on passageway. The utility model can solve the problem of blockage of the air passage port of the cathode plate of the electrolytic cell caused by pressure in the working process.

Description

Anti-clogging cathode plate and electrolytic cell comprising same

Technical Field

The utility model relates to an electrolysis trough technical field especially relates to a prevent negative plate of jam and contain its electrolysis trough.

Background

The electrolytic cell is one of the important components in the hydrogen production industry, and how to optimize the structure of the internal electrode frame of the electrolytic cell so as to maximize the hydrogen yield becomes one of the key technologies. The current electrolytic cell generates hydrogen on the cathode plate side of the proton membrane and oxygen on the anode plate side of the proton membrane, when the gas production is large, the two sides of the proton membrane of the electrolytic cell can generate high pressure, about 3.0-5.0MPa, and the pressure on the cathode side is larger than that on the anode side, the pressure on the cathode side or the anode side can deform a relatively soft sealing layer or a filling film layer arranged between the proton membrane and the cathode plate, and the sealing layer or the filling film layer is pressed to the cathode plate, so that the blockage of a gas path channel port of the cathode plate is caused, and the normal use of the electrolytic cell is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a blockage-preventing cathode plate and an electrolytic cell containing the same are provided, and the blockage problem of the cathode plate of the electrolytic cell at a gas circuit passage port in the working process can be solved.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a pair of prevent negative plate of jam, including being used for connecting external outlet hole, the fretwork is provided with the hydrogen channel groove that supplies the hydrogen circulation on the negative plate, through the switch-on passageway switch-on between the tip in hydrogen channel groove and the outlet hole, the lateral surface of negative plate or the inside of negative plate are located to the switch-on passageway. In addition, the channel structure of the communicating channel can be directly and transversely connected, and a bent structure can be arranged for adjusting the air flow speed according to the requirement. When the access channel is located on the outer side of the cathode plate instead of inside the cathode plate, the volume of the cathode plate can be further reduced, and the cost is saved.

The utility model discloses preferred technical scheme lies in, the shape of hydrogen passageway groove is snakelike.

The utility model discloses preferred technical scheme lies in, the through-hole of giving vent to anger has two, corresponds to two tip of hydrogen passway groove respectively, and just switches on through the switch-on passageway between two tip of two through-holes of giving vent to anger and hydrogen passway groove respectively.

The utility model discloses preferred technical scheme lies in, and the aperture size of the through-hole of giving vent to anger is the same with the width size of hydrogen passway groove.

The utility model discloses preferred technical scheme lies in, and the edge of negative plate still is equipped with a plurality of and is used for sealed screw through-hole.

The utility model discloses preferred technical scheme lies in, and the edge of negative plate still is equipped with into water through-hole and water through-hole.

The utility model discloses preferred technical scheme lies in, and the edge of negative plate still is equipped with the mistake proofing recess.

The preferable technical proposal of the utility model is that the material of the cathode plate is TA1

The utility model also provides an electrolytic bath, which comprises the anti-blocking cathode plate.

The utility model has the advantages that:

the utility model provides a prevent negative plate of jam and contain its electrolysis trough, this structure sets up in the lateral surface of negative plate or inside the negative plate through connecting the switch-on passageway between external air outlet hole and the hydrogen passageway for the pressure that the electrolysis trough produced in the course of the work can't oppress the gas circuit passway of negative electrode through mild part such as proton membrane, titanium felt cloth and cause the jam, thereby guarantees the electrolysis trough normal use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the inside surface of a cathode plate;

FIG. 2 is a schematic of the outer side of the cathode plate;

FIG. 3 is a perspective view of an electrolytic cell of the present invention;

FIG. 4 is an exploded view of an electrolytic cell of the present invention;

FIG. 5 is an exploded view of an electrolytic cell of the present invention.

In the figure:

1. an air outlet through hole; 2. a hydrogen gas passage groove; 3. connecting a channel; 4. a screw through hole; 51. a water inlet through hole; 52. a water outlet through hole; 61 a top plate; 62. a first seal gasket; 63. a cathode plate; 64. a second gasket; 65. an intermediate electrode plate; 66. an anode plate; 67. a base plate; 68. a nut; 7. mistake proofing recess.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model discloses a prevent negative plate of jam, including being used for connecting external air outlet through hole 1, the fretwork is provided with the hydrogen passway 2 that supplies the hydrogen circulation on the negative plate, is equipped with switch-on passageway 3 between the tip of hydrogen passway 2 and the air outlet through hole 1, and switch-on passageway 3 locates the lateral surface of negative plate (the lateral surface of negative plate 63 is the one side that the negative plate 63 is close to roof 61). This structure sets up in the lateral surface of negative plate through connecting the switch-on passageway 3 between external air outlet through hole 1 and the hydrogen passway groove 2 for the pressure that the electrolysis trough produced in the course of the work can't oppress the gas circuit access & exit of negative electrode through like soft membrane parts such as proton membrane, titanium felt cloth, sealed pad, guarantees that hydrogen exhaust passageway does not receive the pressure blockage influence, thereby guarantees the electrolysis trough normal use.

In order to optimize the conductive efficiency of the cathode plate and facilitate the flow of hydrogen, specifically, the hydrogen passage groove 2 is shaped like a serpentine, and the turning position of the serpentine is chamfered in order to reduce the flow resistance of hydrogen.

In order to discharge the hydrogen in the working process of the electrolytic cell in time, furthermore, the number of the air outlet through holes 1 is two, and the two air outlet through holes 1 correspond to the two ends of the serpentine hydrogen flow groove 2 respectively, and the two air outlet through holes 1 are communicated with the two ends of the hydrogen channel groove 2 through the communication channel 3 respectively.

In order to make the water flow through the through channel smooth, it is preferable that the size of the hole diameter of the outlet through hole 1 is the same as the width of the hydrogen passage groove 2.

In order to improve the pressure-resistant effect of the anode plate and the sealing performance thereof, it is preferable that the edge of the cathode plate is further provided with 8 screw through holes 4 for sealing corresponding to the nuts 68.

In order to simplify the structure of the electrolytic cell further, the edges of the cathode plate are preferably provided with water inlet and

outlet holes

51 and 52, respectively.

In order to facilitate the assembly of the electrolytic cell and prevent the occurrence of misdirection during the installation, the edge of the cathode plate is preferably provided with a misdirection-preventing groove 7.

To improve the working efficiency of the cathode plate, it is preferred that the material of the cathode plate is TA 1. TA1 belongs to alpha type titanium alloy, is an industrial pure titanium alloy, TA1 has high strength, low density, excellent corrosion resistance and toughness, the tensile strength of the alloy is between 350 and 550MPa, the plasticity is good, the alloy is easy to process, form and weld, and the alloy is very suitable for cathode materials of electrolytic tanks.

As shown in fig. 3-5, the utility model discloses an electrolytic tank, including the negative plate of preventing blockking up as in the above-mentioned scheme, specifically, this electrolytic tank is formed by roof 61, first sealed 62, negative plate 63, the sealed 64 of second, middle electrode plate 65, the sealed 64 of second, anode plate 66, the sealed 62 of first, bottom plate 67 stack in proper order to compress tightly the connection through 8 nuts 68. The cross-sectional shapes of the above components are square, and the second gasket 64 is different from the first gasket 62 and has a hollow structure inside. The proton membrane is located within the cell between adjacent anodes and cathodes (the anode comprising both the anode plate and the anode side of the bipolar plate, and the cathode for the same reason). Titanium felt cloth for electric conduction is also arranged between the proton membrane and the two electrode plates. The material of the sealing gasket can be silicon gel or teflon or other flexible materials. In FIGS. 3 to 5, the proton membrane and the titanium felt in the electrolytic cell are omitted.

The working principle of the electrolytic cell is as follows: the cathode plate and the anode plate of the electrolytic cell are connected with electricity, when direct current passes through the electrolytic cell, water introduced into the electrolytic cell is subjected to oxidation reaction on one side of the proton membrane close to the anode to generate oxygen, and water introduced into the electrolytic cell is subjected to reduction reaction on one side of the proton membrane close to the anode to generate hydrogen. The water flows into the electrolytic cell from the outside continuously, so that hydrogen and oxygen are generated by continuous electrolysis.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. The anti-blocking cathode plate is characterized by comprising an air outlet through hole (1) for connecting the outside;

a hydrogen channel groove (2) for hydrogen to flow is hollowed on the negative plate;

the end part of the hydrogen passage groove (2) is communicated with the air outlet through hole (1) through a communicating passage (3);

the communicating channel (3) is arranged on the outer side surface of the cathode plate or in the cathode plate.

2. A cathode plate according to claim 1, characterized in that:

the hydrogen channel groove (2) is in a serpentine shape.

3. A cathode plate as claimed in claim 2, wherein:

the two air outlet through holes (1) are respectively corresponding to the two end parts of the hydrogen channel groove (2), and the two air outlet through holes (1) are respectively communicated with the two end parts of the hydrogen channel groove (2) through the communication channel (3).

4. A cathode plate as claimed in claim 3, wherein:

the aperture size of the air outlet through hole (1) is the same as the width size of the hydrogen channel groove (2).

5. A cathode plate as claimed in claim 1, wherein:

the edge of the cathode plate is also provided with a plurality of screw through holes (4) for sealing.

6. A cathode plate as claimed in claim 1, wherein:

the edge of the cathode plate is also provided with a water inlet through hole (51) and a water outlet through hole (52).

7. A cathode plate as claimed in claim 1, wherein:

the edge of the cathode plate is also provided with an error-proof groove (7).

8. A cathode plate as claimed in claim 1, wherein:

the material of the cathode plate was TA 1.

9. An electrolytic cell characterized by:

a cathode plate comprising the anti-clogging of any one of claims 1-8.