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A high-pressure water electrolysis hydrogen production electrolyzer

A water electrolysis and electrolytic cell technology, applied in the electrolysis process, electrolysis components, cells, etc., can solve the problems of reducing the amount of springback, failure of rubber seals, and accelerated creep speed, reducing energy consumption and operating costs, sealing Enhance the effect and create the effect of social benefit

Active Publication Date: 2017-09-05
SHAANXI HUAQIN NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Relying on increasing the compression force to improve the sealing effect will inevitably lead to an increase in the compression deformation of the rubber sealing material, which reduces the amount of rebound under working conditions. Excessive compression force and initial compression deformation often cause Early failure of rubber seals
[0007] During the service process of the flat rubber seal in the compressed state, compression creep and shrinkage deformation will occur. The greater the compression force, the creep deformation will become brighter and the creep speed will be accelerated. It is often used to increase the number of disc springs It is difficult to feed and relax

Method used

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  • A high-pressure water electrolysis hydrogen production electrolyzer
  • A high-pressure water electrolysis hydrogen production electrolyzer
  • A high-pressure water electrolysis hydrogen production electrolyzer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a high-pressure water electrolysis hydrogen production electrolyzer, combining figure 1 and figure 2 , comprising a flat cylindrical positive end plate 6 and a negative end plate 4 respectively positioned opposite to each other, and flat cylindrical combined sealing gaskets 9 and poles are alternately arranged between the positive end plate 6 and the negative end plate 4 Plate and frame assembly 10, and kept parallel, the screw rod 2 passes through the positive end plate 6 and the negative end plate 4 to fasten the combined gasket 9 and the plate frame assembly 10, and the two cylindrical end surfaces of the combined gasket 9 are respectively provided with The sealing lip 15 is circular and deviates to the center of the circle. A circular high-pressure sealing groove 16 is respectively provided on the two cylindrical end surfaces of the plate frame assembly 10. The sealing lip 15 of the combined gasket 9 is embedded in the plate frame assembly....

Embodiment 2

[0034] The combined seal 9 is composed of a ring-shaped rubber gasket 11 and a circular diaphragm asbestos cloth 12 located in the ring. The edge of the diaphragm asbestos cloth 12 and the inner edge of the rubber gasket 11 are integrated by vulcanization and hot pressing process , the rubber gasket 11 is EPDM rubber, the diaphragm asbestos cloth 12 is a densely woven twill asbestos cloth specially used for water electrolysis hydrogen production, and the combination of the rubber gasket 11 and the diaphragm asbestos cloth 12 is that the rubber gasket 11 is carried out When vulcanizing and pressing, place the outer ring of the diaphragm asbestos cloth 12 on the inner side of the rubber gasket 11, and press and vulcanize at the same time to ensure that the rubber gasket 11 and the diaphragm asbestos cloth 12 are firmly bonded, and the length of the bonding part is 20-80mm.

[0035] The two ends of the ring-shaped rubber gasket 11 are respectively provided with a ring of sealing l...

Embodiment 3

[0040] combine Figure 6 , Figure 7 and Figure 8 , the plate frame assembly 10 is composed of a ring-shaped plate frame 13 and a circular plate 14 located in its ring through welding, and a ring of high-voltage The sealing groove 16, the sealing lip 15 is embedded in the high-pressure sealing groove 16 and there is a movable gap; the opposite inner surface of the positive end plate 6 and the negative end plate 4 are respectively provided with a ring for embedding the sealing lip 15 High pressure seal groove 16.

[0041] The outer diameter of the high-pressure sealing groove 16 is consistent with the outer diameter of the sealing lip 15 on the rubber gasket 11, and the diameter is determined according to the designed gas production of the electrolytic cell. The depth of the high-pressure sealing groove 16 is 4-20mm, and the width is 8-30mm The width of the support ribs between the two high-pressure sealing grooves 16 is 3-10mm, the width of the outer plate frame of the hig...

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Abstract

The invention relates to a high-pressure water electrolysis hydrogen-producing electrolytic cell. The high-pressure water electrolysis hydrogen-producing electrolytic cell comprises a positive electrode end plate and a negative electrode end plate, wherein flat cylindrical combined sealing pads and polar plate frame components are arranged between the positive electrode end plate and the negative electrode end plate in a staggered mode and at intervals, and are parallel; a screw rod passes through the positive electrode end plate and the negative electrode end plate to fasten the combined sealing pads and the polar plate frame components; a round sealing lip deviating to the circle center is arranged on each of the two cylindrical end faces of each combined sealing pad; a round high-pressure sealing slot is formed on each of the two cylindrical end faces of each polar plate frame component; and the sealing lips of the combined sealing pads are embedded in the high-pressure sealing slots of the polar plate frame components. The high-pressure water electrolysis hydrogen-producing electrolytic cell is simple in structure and convenient to mount; ethylene-propylene-diene monomer rubber pads are used, so the cost of the rubber pads is greatly reduced and the rubber pads can be reused. Under the high-pressure state, high-pressure hydrogen and oxygen can be directly conveyed, so that the gas pressurizing link is reduced; and the internal pressure is increased, so that the work efficiency of the electrolytic cell is greatly reduced.

Description

technical field [0001] The invention relates to water electrolysis hydrogen production equipment, in particular to an electrolytic cell for high pressure water electrolysis hydrogen production. [0002] technical background [0003] As we all know, increasing the working pressure of water electrolysis hydrogen production process is one of the more economical and effective ways to improve electrolysis efficiency. The working pressure of the traditional water electrolysis hydrogen production water electrolyzer is generally between 0.1MPa and 1.6MPa. In order to improve the electrolysis efficiency, in the water electrolysis hydrogen production industry at home and abroad, some increase the working pressure by 3.0MPa to 3.5MPa. It will exceed 3.5MPa, and the electrolyzer with high pressure operation higher than 3.5MPa will further highlight the safety contradiction of the sealing of the electrolyzer and become the bottleneck technology of restriction. [0004] Due to the low vol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/12C25B9/00
CPCY02E60/36
Inventor 何兴用王彦东杨炎
Owner SHAANXI HUAQIN NEW ENERGY TECH CO LTD