CN115821301A - Pressure balance type proton exchange membrane water electrolyzer device - Google Patents
Pressure balance type proton exchange membrane water electrolyzer device Download PDFInfo
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- CN115821301A CN115821301A CN202211499303.3A CN202211499303A CN115821301A CN 115821301 A CN115821301 A CN 115821301A CN 202211499303 A CN202211499303 A CN 202211499303A CN 115821301 A CN115821301 A CN 115821301A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
The invention relates to a pressure balance type proton exchange membrane water electrolyzer device, which comprises an electrolytic tank, an electrolytic water inlet pipeline, an electrolytic tank hydrogen pipeline, an electrolytic water reservoir and a single-action cylinder, wherein a proton exchange membrane electrode is arranged in the electrolytic tank and divides the inner cavity of the electrolytic tank into an electrolytic tank water cavity and an electrolytic tank air cavity; the hydrogen pipeline of the electrolytic cell is arranged on the electrolytic cell and is connected with the air cavity of the electrolytic cell, and the hydrogen pipeline of the electrolytic cell is connected with an external hydrogen storage tank; the single-action cylinder is arranged on the electrolytic cell, a first piston is arranged in a cylinder body of the single-action cylinder, a second piston is arranged at the output end of the single-action cylinder, and the second piston is arranged in the water cavity of the electrolytic cell to realize the pressure regulation of the water cavity of the electrolytic cell. Compared with the prior art, the invention realizes the balance between the pressure of the hydrogen cavity and the pressure of the water cavity in the proton exchange membrane water electrolyzer, prolongs the service life of the membrane electrode and reduces the requirement on sealing materials.
Description
Technical Field
The invention relates to the technical field of proton exchange membrane water electrolysis cells, in particular to a pressure balance type proton exchange membrane water electrolysis cell device.
Background
The pressure range of the hydrogen outlet of the PEM hydrogen production water electrolyzer is 0-3.5 MPag, the pressure range of the electrolyzed water inlet and outlet is 0-1.5 MPag, the existing water electrolyzer is placed in a normal temperature environment, so that the water electrolyzer has higher pressure difference relative to the environment, and the pressure difference between a cathode gas chamber and the environment can reach 3.5MPa to the maximum. The maximum pressure difference between the anode gas chamber and the environment can reach 1.5MPa.
PEM hydrogen production has very high requirements on sealing materials of water electrolyzers, and the existing materials have fewer types and high price, which restrict the cost and commercial application range of the water electrolyzers. The cost of sealing structures and sealing materials in PEM hydrogen production equipment is high, and industrial popularization in the field is limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a pressure balance type proton exchange membrane water electrolyzer device, so that the pressure of a hydrogen cavity and the pressure of a water cavity in the proton exchange membrane water electrolyzer are kept balanced, the service life of a membrane electrode is prolonged, and the requirement on a sealing material is reduced.
The purpose of the invention can be realized by the following technical scheme:
the invention aims to provide a pressure balance type proton exchange membrane water electrolyzer device, which comprises an electrolytic cell, an electrolytic water inlet pipeline, an electrolytic cell hydrogen pipeline, an electrolytic water reservoir and a single-action cylinder, wherein the pressure balance type proton exchange membrane water electrolyzer device specifically comprises the following components:
the inside of the electrolytic cell is provided with a proton exchange membrane electrode which divides the inner cavity of the electrolytic cell into an electrolytic cell water cavity and an electrolytic cell air cavity;
the electrolysis water inlet pipeline is arranged on the electrolytic bath and is connected with the water cavity of the electrolytic cell;
the hydrogen pipeline of the electrolytic cell is arranged on the electrolytic cell and is connected with the air cavity of the electrolytic cell, and the hydrogen pipeline of the electrolytic cell is connected with an external hydrogen storage tank;
the electrolyzed water reservoir is connected with the electrolyzed water inlet pipeline;
the single-action cylinder is arranged on the electrolytic cell, a first piston is arranged in a cylinder body of the single-action cylinder, a second piston is arranged at the output end of the single-action cylinder, and the second piston is arranged in the water cavity of the electrolytic cell to realize the pressure regulation of the water cavity of the electrolytic cell.
Furthermore, a vertically arranged cylindrical convex hull is arranged at the top of the electrolytic cell, and the second piston is arranged in the cylindrical convex hull.
Further, the inner diameter of the cylindrical convex hull matches the second piston.
Furthermore, the cylinder body of the single-acting cylinder is connected with the hydrogen pipeline of the electrolytic cell, so that the pressure balance between the cylinder body of the single-acting cylinder and the electrolytic cell air cavity is realized.
Furthermore, a check valve is arranged on a hydrogen pipeline of the electrolytic cell;
and a hydrogen-gas water separator is also arranged between the hydrogen pipeline of the electrolytic cell and the hydrogen storage tank.
Furthermore, a water pump is arranged between the output port of the electrolyzed water reservoir and the electrolyzed water inlet pipeline.
Furthermore, a water replenishing flow regulating valve is arranged on the electrolysis water inlet pipeline.
Further, the pressure balance type proton exchange membrane water electrolyzer device further comprises a water level control assembly, wherein the water level control assembly comprises a water cavity liquid level meter for monitoring the water level of the water cavity of the electrolytic cell and a water cavity water supplementing pipeline connected with the top of the water cavity of the electrolytic cell, an electromagnetic valve is arranged on the water cavity water supplementing pipeline, and the electromagnetic valve is electrically connected with the water cavity liquid level meter.
Further, the pressure balance type proton exchange membrane water electrolyzer device also comprises a controller;
the electrolytic cell water cavity and the electrolytic cell air cavity are respectively provided with an electrolytic cell water cavity pressure gauge and an electrolytic cell gas pressure gauge in a matching manner;
the controller is respectively and electrically connected with the water cavity liquid level meter, the electromagnetic valve, the electrolytic bath water cavity pressure gauge and the electrolytic bath gas pressure gauge.
Further, the pressure balance type proton exchange membrane water electrolyzer device further comprises a water cavity water return pipeline, one end of the water cavity water return pipeline is connected to the top of the water cavity of the electrolytic cell, and the other end of the water cavity water return pipeline is connected with the electrolyzed water reservoir.
Compared with the prior art, the invention has the following technical advantages:
the pressure-balanced proton exchange membrane water electrolyzer in the technical scheme constructs a pressure-stabilized and pressure-adjustable integral structure, ensures that the pressure of a hydrogen cavity and the pressure of a water cavity in the proton exchange membrane water electrolyzer are kept balanced, prolongs the service life of a membrane electrode, and reduces the requirement on sealing materials, thereby achieving the purposes of prolonging the service cycle of the electrolyzer and reducing the material cost.
Drawings
Fig. 1 is a schematic structural diagram of a pressure balance type proton exchange membrane water electrolyzer in the technical scheme.
In the figure: 10 an electrolyzed water reservoir; 100 water pump; 101 water replenishing flow regulating valve; 102 an electrolysis water inlet line; 20 an electrolytic bath; 200 electrolytic cell water chamber; 201 an electrolytic cell air cavity; 202 proton exchange membrane electrode; 203 water chamber piston; 204 single-acting cylinders; 205 electrolytic cell water cavity pressure gauge; 206 cell gas gauge; 207 water chamber level gauge; 301 electrolyzer hydrogen line; 302 hydrogen gas-water separator; 303 hydrogen storage tank, 304 one-way valve; 401 water cavity water replenishing pipeline; 402 an electrolytic water flow regulating valve; 501 water cavity return water pipeline; 601 an electrolytic water circuit.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. In the technical solution, the structure/module name, the control mode, the algorithm, the process or the composition ratio and other features that are not explicitly described are all regarded as common technical features disclosed in the prior art.
The pressure balance type proton exchange membrane water electrolyzer device comprises an electrolytic cell 20, an electrolytic water inlet pipeline 102, an electrolytic cell hydrogen pipeline 301, an electrolytic water reservoir 10 and a single-acting cylinder 204, wherein the single-acting cylinder is specifically shown in figure 1.
The electrolytic cell 20 is provided with a proton exchange membrane electrode 202, and the inner cavity of the electrolytic cell 20 is divided into an electrolytic cell water cavity 200 and an electrolytic cell air cavity 201 by the proton exchange membrane electrode 202. The top of the electrolytic cell 20 is provided with a vertically arranged cylindrical convex hull, and the second piston is arranged in the cylindrical convex hull. The inner diameter of the cylindrical convex hull is matched with the second piston.
The single-acting cylinder 204 is arranged on the electrolytic cell 20, a first piston is arranged in a cylinder body of the single-acting cylinder 204, a second piston is arranged at the output end of the single-acting cylinder 204, and the second piston is arranged in the electrolytic cell water cavity 200 to realize pressure regulation of the electrolytic cell water cavity 200. The cylinder body of the single-acting cylinder 204 is connected with the hydrogen pipeline 301 of the electrolytic bath, so that the pressure balance between the cylinder body of the single-acting cylinder 204 and the electrolytic bath air chamber 201 is realized.
An electrolysis water inlet pipeline 102 is arranged on the electrolytic cell 20 and is connected with the electrolytic cell water cavity 200. The electrolytic cell hydrogen pipeline 301 is arranged on the electrolytic cell 20 and is connected with the electrolytic cell air cavity 201, and the electrolytic cell hydrogen pipeline 301 is connected with an external hydrogen storage tank 303; the electrolyzed water reservoir 10 is connected with the electrolyzed water inlet pipeline 102; the hydrogen pipeline 301 of the electrolytic cell is provided with a one-way valve 304; a hydrogen gas-water separator 302 is also arranged between the hydrogen pipeline 301 and the hydrogen storage tank 303 of the electrolytic cell.
A water pump 100 is provided between the outlet of the electrolyzed water reservoir 10 and the electrolyzed water inlet line 102. A water replenishing flow regulating valve 101 is arranged on the electrolysis water inlet pipeline 102.
The pressure balance type proton exchange membrane water electrolyzer device further comprises a water level control assembly, the water level control assembly comprises a water cavity liquid level meter 207 for monitoring the water level of the water cavity 200 of the electrolytic cell and a water cavity water supplementing pipeline 401 connected with the top of the water cavity 200 of the electrolytic cell, an electromagnetic valve is arranged on the water cavity water supplementing pipeline 401, and the electromagnetic valve is electrically connected with the water cavity liquid level meter 207.
The pressure balance type proton exchange membrane water electrolyzer device also comprises a controller, wherein the controller is one of a singlechip or an x86 architecture, an ARM architecture and a RISC-V architecture processor.
The electrolytic cell water cavity 200 and the electrolytic cell air cavity 201 are respectively provided with an electrolytic cell water cavity pressure gauge 205 and an electrolytic cell gas pressure gauge 206 in a matching way. The controller is respectively electrically connected with the water cavity liquid level meter 207, each electromagnetic valve in the technical scheme, the electrolytic cell water cavity pressure gauge 205 and the electrolytic cell gas pressure gauge 206, so that a simple control process is realized as required.
The pressure balance type proton exchange membrane water electrolyzer device further comprises a water cavity water return pipeline 501, one end of the water cavity water return pipeline 501 is connected to the top of the water cavity 200 of the electrolytic cell, and the other end of the water cavity water return pipeline is connected with the electrolyzed water reservoir 10.
Description of the working principle:
1. the pressure balance type proton exchange membrane water electrolyzer in the technical scheme aims to ensure that the pressure of a hydrogen cavity and the pressure of a water cavity in the proton exchange membrane water electrolyzer keep balance. The service life of the membrane electrode is prolonged, and the requirements on sealing materials are reduced, so that the service cycle of the electrolytic cell is prolonged, and the material cost is reduced.
2. In the technical scheme, water in the water cavity 200 of the electrolytic cell contains water for electrolytic hydrogen production (entering the tank from a 102 pipeline) and make-up water with balanced pressure (entering the tank from a 401 pipeline), the water flow of the two paths entering the electrolytic cell is adjustable, and the pressure in the electrolytic cell is generated by the water pump 100. The pressure in the cell is shown at 205. The volume of water in the cell is indicated by level gauge 207; when the liquid level meter displays water shortage, the flow valve 402 is adjusted, the water cavity water replenishing pipeline 401 replenishes water, when the water cavity pressure meter 205 displays that the pressure exceeds the specified pressure, the flow valve 402 is turned down or closed, the water replenishing pipeline is disconnected, and meanwhile, the valve of the pipeline 101 of the electrolytic cell is turned down, so that the electrolytic water entering the electrolytic cell is reduced.
3. The hydrogen water cavity of the electrolytic cell in the technical scheme is provided with a piston 203 and is connected with a single-action cylinder 204, the inside of a cylinder body of the single-action cylinder is filled with hydrogen generated by the electrolytic cell, the acting surface S1 of the cylinder body cylinder and the piston area S2 of the water cavity. The electrolyzer hydrogen chamber pressure is shown by pressure gauge 206.
4. In the technical scheme, after hydrogen generated by the hydrogen cavity of the electrolytic cell passes through the water-gas separator 302, one part of the hydrogen enters the gas storage tank 303, the pipeline is provided with the one-way valve 304, and the other part of the hydrogen enters the single-use cylinder 204. The cylinder is used for resetting as a spring.
5. In the technical scheme, the gas pressure inside the single-acting cylinder is approximately the same as the pressure of hydrogen generated by the electrolytic cell, and when the acting area S1 of the piston of the cylinder is larger than the area S2 of the piston of the electrolytic cell, the thrust of the piston of the cylinder is larger than the thrust of the piston of the electrolytic cell. When the acting area S1 of the piston of the cylinder is equal to the area S2 of the piston of the electrolytic cell, the thrust of the piston of the air cavity in the cell is the same as the thrust of the piston in the cylinder. When the area of the cylinder piston is smaller than the area S2 of the electrolytic bath piston, the thrust of the cylinder piston is smaller than that of the electrolytic bath piston.
6. When the electrolytic cell operates and is subjected to load change rapidly, the dynamic balance of the pressure of the water cavity and the pressure of the air cavity of the electrolytic cell can be ensured by setting the piston area of the cylinder and the piston area of the water cavity of the cell body in advance.
7. The reasonable ratio of the acting area of the cylinder piston to the acting area of the electrolytic cell piston can be calculated by matching the pressure value of the water cavity of the electrolytic cell with the pressure value of the hydrogen cavity.
The embodiments described above are intended to facilitate a person of ordinary skill in the art in understanding and using the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. A pressure balanced proton exchange membrane water electrolyzer apparatus, characterized by comprising:
the electrolytic cell comprises an electrolytic cell (20), wherein a proton exchange membrane electrode (202) is arranged in the electrolytic cell (20), and the proton exchange membrane electrode (202) divides the inner cavity of the electrolytic cell (20) into an electrolytic cell water cavity (200) and an electrolytic cell air cavity (201);
the electrolysis water inlet pipeline (102) is arranged on the electrolytic cell (20) and is connected with the electrolytic cell water cavity (200);
the electrolytic cell hydrogen pipeline (301) is arranged on the electrolytic cell (20) and is connected with the electrolytic cell air cavity (201), and the electrolytic cell hydrogen pipeline (301) is connected with an external hydrogen storage tank (303);
an electrolyzed water reservoir (10) connected to the electrolyzed water inlet line (102);
the single-acting cylinder (204) is arranged on the electrolytic cell (20), a first piston is arranged in a cylinder body of the single-acting cylinder (204), a second piston is arranged at the output end of the single-acting cylinder (204), and the second piston is arranged in the electrolytic cell water cavity (200) to realize pressure regulation of the electrolytic cell water cavity (200).
2. The pressure balanced proton exchange membrane water electrolyzer unit according to claim 1, characterized in that the top of the electrolyzer (20) is provided with a vertically arranged cylindrical convex hull, and the second piston is arranged in the cylindrical convex hull.
3. The pressure balanced pem water electrolyzer device of claim 2 wherein the inside diameter of said cylindrical convex hull matches said second piston.
4. The pressure balanced proton exchange membrane water electrolyzer device according to claim 1, characterized in that the cylinder body of the single-acting cylinder (204) is connected with the electrolyzer hydrogen pipeline (301) to realize the pressure balance between the cylinder body of the single-acting cylinder (204) and the electrolyzer air chamber (201).
5. The pressure balance type proton exchange membrane water electrolyzer device of claim 1, characterized in that a check valve (304) is arranged on the hydrogen pipeline (301) of the electrolyzer;
a hydrogen gas-water separator (302) is also arranged between the hydrogen pipeline (301) of the electrolytic cell and the hydrogen storage tank (303).
6. The pressure balanced pem water electrolyser as claimed in claim 1, wherein a water pump (100) is provided between the outlet of said electrolyzed water reservoir (10) and the electrolyzed water inlet line (102).
7. The pressure balanced pem water electrolyzer apparatus of claim 1 wherein said electrolysis water inlet line (102) is provided with a makeup water flow control valve (101).
8. The pressure balanced proton exchange membrane water electrolyzer device according to claim 1, further comprising a water level control assembly, wherein the water level control assembly comprises a water chamber level meter (207) for monitoring the water level of the water chamber (200) of the electrolytic cell and a water chamber water replenishing pipeline (401) connected with the top of the water chamber (200) of the electrolytic cell, and the water chamber water replenishing pipeline (401) is provided with a solenoid valve, and the solenoid valve is electrically connected with the water chamber level meter (207).
9. The pressure-balanced pem water electrolyzer device of claim 8 wherein said pressure-balanced pem water electrolyzer device further comprises a controller;
an electrolytic tank water cavity pressure gauge (205) and an electrolytic tank gas pressure gauge (206) are respectively arranged on the electrolytic tank water cavity (200) and the electrolytic tank gas cavity (201) in a matching manner;
the controller is respectively electrically connected with the water cavity liquid level meter (207), the electromagnetic valve, the electrolytic cell water cavity pressure meter (205) and the electrolytic cell gas pressure meter (206).
10. The pressure balanced pem water electrolyzer apparatus of claim 8, further comprising a water chamber return pipe (501), wherein one end of said water chamber return pipe (501) is connected to the top of said water chamber (200) of said electrolyzer, and the other end is connected to said electrolyzed water reservoir (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211499303.3A CN115821301A (en) | 2022-11-28 | 2022-11-28 | Pressure balance type proton exchange membrane water electrolyzer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211499303.3A CN115821301A (en) | 2022-11-28 | 2022-11-28 | Pressure balance type proton exchange membrane water electrolyzer device |
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| Publication Number | Publication Date |
|---|---|
| CN115821301A true CN115821301A (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211499303.3A Pending CN115821301A (en) | 2022-11-28 | 2022-11-28 | Pressure balance type proton exchange membrane water electrolyzer device |
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| Country | Link |
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| CN (1) | CN115821301A (en) |
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- 2022-11-28 CN CN202211499303.3A patent/CN115821301A/en active Pending
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