PEM membrane electrode airtightness detection assembly

Abstract

The utility model discloses a PEM membrane electrode air tightness detection assembly, and specifically relates to the air tightness detection technology field, the PEM membrane electrode air tightness detection assembly comprises a detection tool used for clamping a PEM membrane electrode, the detection tool comprises a top upper tool and a bottom lower tool, the upper tool and the lower tool are provided with cavities, and the cavities are communicated with the detection tool. The PEM membrane electrode is clamped between the upper jig and the lower jig and blocks a cavity between the upper jig and the lower jig, the input end of the upper jig is provided with an input assembly, and the output end of the lower jig is provided with a discharge assembly used for detecting airflow. The gas-tight loop is simple in structure, low in environmental requirement, strong in anti-interference capability, small in detection loop occupied space, capable of being placed at various positions according to occasions, simple in loop wiring, easy to understand in control principle, high in efficiency and the like, and solves the problems that the conventional membrane electrode detection equipment is heavy, large in occupied area, inconvenient to maintain, troubleshoot and move and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of airtight detection, in particular to a PEM membrane electrode airtight detection component. Background Art

[0002] The existing hydrogen energy (electrolyzer) industry is growing rapidly, with comprehensive development and improvement in many aspects. As key equipment for large-scale hydrogen production from renewable energy, electrolyzers account for nearly 50% of the total cost of hydrogen production systems. Therefore, electrolyzers play a vital role in the field of hydrogen energy.

[0003] In order to ensure stability and safety, the electrolyzer needs to be tested for air tightness before use. There are various methods for testing the air tightness of the existing electrolyzers. The PEM membrane electrode is a key component in the electrolyzer and is responsible for the core process of the water electrolysis reaction. However, there are currently few tests on the PEM membrane electrode, and relevant successful test cases are needed for reference.

[0004] The airtightness test of PEM membrane electrode plays a key role in the promotion of the entire electrolyzer, but the testing method in the existing technology is inefficient, the testing equipment occupies a large area and is too complicated. Utility Model Content

[0005] The purpose of the utility model is to provide a PEM membrane electrode airtight detection component. Compared with the existing traditional airtight detection circuit, the airtight circuit has a simple structure, low environmental requirements, strong anti-interference ability, and a small detection circuit space, and can be placed in various positions according to occasions.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PEM membrane electrode airtight detection assembly, comprising a detection fixture for clamping the PEM membrane electrode, the detection fixture comprising an upper fixture at the top and a lower fixture at the bottom, the upper fixture and the lower fixture both having cavities, the PEM membrane electrode is clamped between the upper fixture and the lower fixture and blocks the cavities of the two;

[0007] The input end of the upper fixture is provided with an input component, and the output end of the lower fixture is provided with an exhaust component for detecting the airflow rate, wherein the exhaust component comprises a two-way joint, and the input end of the two-way joint is connected to the output end of the lower fixture;

[0008] The two output ends of the three-way connector 2 are respectively provided with an air control valve 3 and a flow meter.

[0009] Further, the input component includes a three-way connector 1, one output end of the three-way connector 1 is connected to the input end of the upper fixture, the other output end of the three-way connector 1 is provided with a gas-controlled valve 2, and the gas-controlled valve 2 and the gas-controlled valve 3 are both provided with a muffler;

[0010] The input end of the three-way connector 1 is provided with a gas circuit block, and a pressure transmitter is fixedly provided on the gas circuit block. The pressure transmitter is connected to the internal flow channel to monitor whether the gas pressure of the entire front end is stable.

[0011] Furthermore, the input end of the gas circuit block is provided with a gas control valve 1, the input end of the gas control valve 1 is provided with a precision pressure reducing valve 2, and the input end of the precision pressure reducing valve 2 is provided with a precision pressure reducing valve 1.

[0012] Furthermore, an oil mist separator is provided at the input end of the precision pressure reducing valve 1, a booster pump is provided at the input end of the oil mist separator, an air storage tank is provided at the input end of the booster pump, and a pressure reducing valve 1 is provided at the input end of the air storage tank.

[0013] Furthermore, the input end of the pressure reducing valve 1 is provided with a three-way connector 3, the input end of the three-way connector 3 is connected to the factory gas source through a pipeline, and the three-way connector 3 divides the factory gas source into two parts.

[0014] Further, one output end of the three-way connector is connected to the input end of the pressure reducing valve one, the other output end of the three-way connector is provided with a pressure reducing valve two, and the output end of the pressure reducing valve two is provided with a confluence assembly;

[0015] The bus assembly includes a bus bar, a blind plate and three solenoid valves. The three solenoid valves respectively control three air-controlled valves for automatic and independent control.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. Compared with the existing traditional airtight detection circuit, the airtight detection component of the present application has a simple airtight circuit structure, low environmental requirements, strong anti-interference ability, and a small detection circuit space, and can be placed in various positions according to occasions;

[0018] 2. The airtight detection circuit has simple wiring, easy-to-understand control principles, and high efficiency, which solves the problems of heavy membrane electrode detection equipment, large footprint, inconvenient maintenance, inspection and movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 This is a structural diagram of the detection component of the utility model;

[0021] Figure 2This is an exploded view of the fixture of the utility model;

[0022] Figure 3 This is a structural diagram of the input component of the utility model;

[0023] Figure 4 This is a structural diagram of the discharge assembly of the utility model;

[0024] Figure 5 This is a structural diagram of the confluence component of the present utility model.

[0025] Description of reference numerals:

[0026] 1. Pressure reducing valve 1; 2. Gas storage tank; 3. Laminar pump; 4. Oil mist separator; 5. Input assembly; 501. Precision pressure reducing valve 1; 502. Precision pressure reducing valve 2; 503. Air control valve 1; 504. Three-way connector 1; 505. Air circuit block; 506. Pressure transmitter; 507. Air control valve 2; 6. Discharge assembly; 601. Three-way connector 2; 602. Air control valve 3; 603. Flow meter; 7. Detection fixture; 701. Upper fixture; 702. Lower fixture; 8. Pressure reducing valve 2; 9. Busbar assembly; 901. Busbar; 902. Blind plate; 903. Solenoid valve; 10. Three-way connector 3; 11. PEM membrane electrode; 12. Muffler. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The utility model provides Figure 1-5 A PEM membrane electrode airtight detection assembly shown includes a detection fixture 7 for clamping a PEM membrane electrode 11, the detection fixture 7 includes an upper fixture 701 at the top and a lower fixture 702 at the bottom, the upper fixture 701 and the lower fixture 702 are both provided with cavities, and the PEM membrane electrode 11 is clamped between the upper fixture 701 and the lower fixture 702 to block the cavities of the two;

[0029] The input end of the upper fixture 701 is provided with an input component 5, and the output end of the lower fixture 702 is provided with an exhaust component 6 for detecting the airflow rate, and the exhaust component 6 includes a second three-way connector 601, and the input end of the second three-way connector 601 is connected to the output end of the lower fixture 702;

[0030] The two output ends of the two-way connector 601 are respectively provided with a gas control valve 602 and a flow meter 603.

[0031] The PEM membrane electrode 11 to be tested is clamped between the upper fixture 701 and the lower fixture 702, and the PEM membrane electrode 11 blocks the cavities of the two. The test gas is pressurized and input into the cavity of the upper fixture 701 through the input component 5, and then passes through the PEM membrane electrode 11 into the cavity of the lower fixture 702, and is finally discharged through the discharge component 6. When the exhausted gas enters the flow meter 603, the flow meter 603 is also connected to the atmosphere. Therefore, by observing the value of the flow meter 603, the flow value of the exhausted gas can be obtained, and the airtightness of the PEM membrane electrode 11 can be judged based on this.

[0032] The air before entering the detection fixture 7 needs to pass through the input component 5, such as Figure 1 , 3 As shown, the input component 5 includes a three-way connector 504, one output end of the three-way connector 504 is connected to the input end of the upper fixture 701, and the other output end of the three-way connector 504 is provided with a gas control valve 507, and the gas control valve 507 and the gas control valve 602 are both provided with a muffler 12;

[0033] The input end of the three-way connector 504 is provided with a gas circuit block 505, and a pressure transmitter 506 is fixedly provided on the gas circuit block 505. The pressure transmitter 506 is connected to the internal flow channel to monitor whether the gas pressure of the entire front end is stable.

[0034] The input end of the gas circuit block 505 is provided with an air control valve 1 503 , the input end of the air control valve 1 503 is provided with a precision pressure reducing valve 2 502 , and the input end of the precision pressure reducing valve 2 502 is provided with a precision pressure reducing valve 1 501 .

[0035] The pressurized gas passes through precision pressure reducing valve 501 and precision pressure reducing valve 502 in turn, and then enters air control valve 503. Air control valve 503 is kept normally closed when not tested to prevent the upper fixture 701 from being ventilated all the time. Then the gas enters the gas circuit block 505 from air control valve 503. The pressure transmitter 506 and the internal flow channel are opened to monitor whether the gas pressure of the entire front end is stable. The gas passing through the gas circuit block 505 enters the three-way connector 504. The two output ends of the three-way connector 504 are respectively connected to the air control valve 507 and the input end of the upper fixture 701. The air control valve 507 is mainly used for exhaust after the test is completed to prevent the existence of a closed cavity when the upper fixture 701 and the lower fixture 702 are separated to cause damage to the PEM membrane electrode 11 product.

[0036] The factory air source needs to be pressurized before entering the input assembly 5, such as Figure 1 , 5As shown, the input end of the precision pressure reducing valve 501 is provided with an oil mist separator 4, the input end of the oil mist separator 4 is provided with a booster pump 3, the input end of the booster pump 3 is provided with an air storage tank 2, and the input end of the air storage tank 2 is provided with a pressure reducing valve 1.

[0037] The input end of the pressure reducing valve 1 is provided with a three-way connector 10, and the input end of the three-way connector 10 is connected to the factory gas source through a pipeline, and the three-way connector 10 divides the factory gas source into two parts.

[0038] One output end of the three-way connector 10 is connected to the input end of the pressure reducing valve 1, and the other output end of the three-way connector 10 is provided with a pressure reducing valve 2 8, and the output end of the pressure reducing valve 2 8 is provided with a confluence component 9;

[0039] The bus assembly 9 includes a bus bar 901, a blind plate 902 and three solenoid valves 903. The three solenoid valves 903 respectively control three air-controlled valves for automatic and independent control.

[0040] The factory gas source is divided into two parts, which are respectively connected to the pressure reducing valve 1 and the pressure reducing valve 2 8 through the three-way joint 10. The pressure reducing valve 1 is connected to the gas storage tank 2, and the factory gas source is pressurized by the booster pump 3. The maximum pressure can be increased to 1MPa. The test pressure is determined according to the size of the product. The pressurized gas is output to the oil mist separator 4, and then input into the input component 5 after passing through the oil mist separator 4.

[0041] This detection method has a simple airtight circuit structure, has low requirements for installation location and detection environment, has a simple structure and occupies a small area, and is easy to carry out maintenance and inspection during use.

[0042] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A PEM membrane electrode airtightness detection assembly, comprising a detection fixture (7) for clamping a PEM membrane electrode (11), characterized in that: The detection jig (7) comprises an upper jig (701) at the top and a lower jig (702) at the bottom, the upper jig (701) and the lower jig (702) both have cavities, and the PEM membrane electrode (11) is sandwiched between the upper jig (701) and the lower jig (702) to block the cavities of the two. The input end of the upper fixture (701) is provided with an input component (5), and the output end of the lower fixture (702) is provided with an exhaust component (6) for detecting the airflow rate, wherein the exhaust component (6) comprises a second three-way connector (601), and the input end of the second three-way connector (601) is connected to the output end of the lower fixture (702); The two output ends of the two-way connector (601) are respectively provided with a gas-controlled valve (602) and a flow meter (603).

2. A PEM membrane electrode gas tightness detection assembly according to claim 1, characterized in that: The input component (5) comprises a three-way connector (504), one output end of which is connected to the input end of the upper fixture (701), and the other output end of the three-way connector (504) is provided with a gas-controlled valve (507), and both the gas-controlled valve (507) and the gas-controlled valve (602) are provided with a muffler (12); The input end of the three-way connector 1 (504) is provided with a gas circuit block (505), and a pressure transmitter (506) is fixedly provided on the gas circuit block (505).

3. A PEM membrane electrode gas tightness detection assembly according to claim 2, characterized in that: The input end of the gas circuit block (505) is provided with a gas control valve 1 (503), the input end of the gas control valve 1 (503) is provided with a precision pressure reducing valve 2 (502), and the input end of the precision pressure reducing valve 2 (502) is provided with a precision pressure reducing valve 1 (501).

4. A PEM membrane electrode gas tightness detection assembly according to claim 3, characterized in that: The input end of the precision pressure reducing valve 1 (501) is provided with an oil mist separator (4), the input end of the oil mist separator (4) is provided with a booster pump (3), the input end of the booster pump (3) is provided with an air storage tank (2), and the input end of the air storage tank (2) is provided with a pressure reducing valve 1 (1).

5. A PEM membrane electrode gas tightness detection assembly according to claim 4, characterized in that: The input end of the pressure reducing valve 1 (1) is provided with a three-way connector 3 (10), and the input end of the three-way connector 3 (10) is connected to the factory gas source through a pipeline.

6. A PEM membrane electrode gas tightness detection assembly according to claim 5, characterized in that: One output end of the three-way connector (10) is connected to the input end of the pressure reducing valve (1), and the other output end of the three-way connector (10) is provided with a pressure reducing valve (8), and the output end of the pressure reducing valve (8) is provided with a converging assembly (9); The bus assembly (9) comprises a bus bar (901), a blind plate (902) and three solenoid valves (903).

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