Testing equipment for detecting surface resistance of diaphragm for water electrolysis hydrogen production

Abstract

The utility model relates to the technical field of water electrolysis hydrogen production, in particular to test equipment for detecting the surface resistance of a diaphragm for water electrolysis hydrogen production, which comprises a workbench, a test tank, a cover plate, a square fixture, two pole pieces, two diaphragm clamping plates, an alkali liquor circulating mechanism and an alternating current impedance instrument, the square clamp is inserted into the clamping groove, a diaphragm to be tested is placed between the two diaphragm clamping plates, the two diaphragm clamping plates are inserted into the square clamp, the temperature of alkali liquor conveyed into the testing groove is controlled and adjusted through the temperature adjusting assembly, and then the alkali liquor is conveyed into the testing groove through the alkali liquor circulating mechanism. After the specified time, the alternating current impedance instrument is used for carrying out resistance testing, the tested resistance data and the area of the circular hole are calculated, the surface resistance value of the diaphragm is obtained, and by adopting the structure, the testing effect is better when the surface resistance of the diaphragm is tested.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production by electrolyzing water, in particular to a test device for detecting the surface resistance of a diaphragm used for hydrogen production by electrolyzing water. Background Art

[0002] The alkaline electrolytic water hydrogen production technology applies direct current between two electrodes of an alkaline electrolytic cell, and hydrogen and oxygen are respectively precipitated at the anode and the cathode simultaneously. Among them, the diaphragm is used to separate the anode and the cathode to prevent the generated hydrogen and oxygen from mixing, and at the same time provide a transmission channel for ions. An ideal electrolytic diaphragm should meet the requirements of small ion passing resistance. A smaller diaphragm ion resistance means a lower transmembrane voltage. Especially at a higher current density, the transmembrane voltage will be greatly reduced, and thus the DC energy consumption of the electrolytic cell will be greatly reduced.

[0003] At present, there is a lack of corresponding test equipment for the test method of the surface resistance of the diaphragm used for alkaline electrolytic water hydrogen production. Generally, the electrochemical impedance EIS is measured by assembling into a unit cell, and the test effect is not ideal enough. Summary of the Invention

[0004] The purpose of the utility model is to provide a test device for detecting the surface resistance of a diaphragm used for hydrogen production by electrolyzing water, so as to solve the problem that there is a lack of corresponding test equipment for the test method of the surface resistance of the diaphragm used for alkaline electrolytic water hydrogen production in the prior art. Generally, the electrochemical impedance EIS is measured by assembling into a unit cell, and the test effect is not ideal enough.

[0005] To achieve the above purpose, the utility model provides a test device for detecting the surface resistance of a diaphragm used for hydrogen production by electrolyzing water. The test device for detecting the surface resistance of a diaphragm used for hydrogen production by electrolyzing water includes a workbench, a test tank, a cover plate, a square fixture, two pole pieces, two diaphragm clamping plates, an alkaline liquid circulation mechanism and an AC impedance meter. The test tank is arranged on the upper surface of the workbench, and the AC impedance meter is arranged on one side of the test tank. The interior of the test tank has a partition board, and the partition board is located in the middle section of the test tank. A clamping groove is arranged on the partition board, and the square fixture is clamped at the clamping groove. The two pole pieces are arranged on both sides of the square fixture. An installation groove is arranged on the square fixture, and two of the diaphragm clamping plates are clamped inside the installation groove. A diaphragm to be tested is placed between the two diaphragm clamping plates. Circular holes are penetrated through the centers of the square fixture and the two diaphragm clamping plates;

[0006] The workbench is also provided with the lye circulation mechanism, which is used to circulate and transport lye into the interior of the test tank. A temperature adjustment component is arranged on the lye circulation mechanism, which is used to adjust the temperature of the lye in the test tank. The upper end of the test tank is clamped with the cover plate. A through groove is arranged in the middle section of the cover plate. The square fixture is adapted to the through groove, and the top end of the pole piece extends into the interior of the through groove.

[0007] Among them, the lye circulation mechanism includes a lye circulation pump, a heating barrel, a delivery pipe and a liquid return pipe. An inlet and an outlet are respectively arranged at both ends of the test tank. The lye circulation pump is installed on the workbench. The input end of the lye circulation pump is connected to the heating barrel through a pipeline. The output end of the lye circulation pump is provided with the delivery pipe. The end of the delivery pipe away from the lye circulation pump is connected to the inlet. The liquid return pipe is arranged between the input end of the heating barrel and the outlet.

[0008] Among them, the temperature adjustment component includes a thermometer and an electric heating wire. The electric heating wire and the thermometer are arranged inside the heating barrel. Both the thermometer and the electric heating wire are electrically connected to the control terminal of the test equipment.

[0009] Among them, placing slots are arranged on both sides of the square fixture, and the two pole pieces are respectively clamped into the corresponding placing slots.

[0010] Among them, disassembly and assembly protrusions are arranged at both ends of the upper surface of the cover plate.

[0011] A test device for detecting the surface resistance of a diaphragm for hydrogen production by electrolysis of water includes a workbench, a test tank, a cover plate, a square fixture, two pole pieces, two diaphragm clamping plates, a lye circulation mechanism and an alternating current impedance meter. After placing the pole pieces on both sides of the square fixture, inserting the square fixture into the card slot, placing the diaphragm to be tested between the two diaphragm clamping plates, and then inserting the two diaphragm clamping plates into the square fixture, using the temperature adjustment component to control and adjust the temperature of the lye transported into the test tank, using the lye circulation mechanism to transport the lye into the test tank, waiting for a specified time, using the alternating current impedance meter to perform a resistance test, recording the resistance data at this time, and calculating the measured resistance data with the area of the circular hole, so as to obtain the surface resistance value of the diaphragm. With the above structure, when testing the surface resistance of the diaphragm, the test effect is better. Description of the Drawings

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 is a schematic structural diagram of a test device provided by the present invention for detecting the surface resistance of a diaphragm used in water electrolysis hydrogen production.

[0014] Figure 2 is provided by the present invention Figure 1 partial enlarged structural view of part A

[0015] Figure 3 is a schematic diagram of a partial structure inside the test tank provided by the present invention.

[0016] Figure 4 is provided by the present invention Figure 3 partial enlarged structural view of part B

[0017] Figure 5 is a cross-sectional view of the internal structure of the heating barrel provided by the present invention.

[0018] 101 - workbench, 102 - test tank, 103 - cover plate, 104 - square fixture, 105 - electrode plate, 106 - diaphragm clamping plate, 107 - lye circulation mechanism, 108 - AC impedance meter, 109 - partition board, 110 - card slot, 111 - installation slot, 112 - circular hole, 113 - through groove, 114 - lye circulation pump, 115 - heating barrel, 116 - delivery pipe, 117 - return pipe, 118 - liquid inlet, 119 - liquid outlet, 120 - thermometer, 121 - electric heating wire, 122 - placement slot, 123 - disassembly and assembly protrusion. Detailed Embodiments

[0019] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0020] Please refer to Figures 1 to 5, the present utility model provides a test device for detecting the surface resistance of a diaphragm used in water electrolysis hydrogen production. The test device for detecting the surface resistance of a diaphragm used in water electrolysis hydrogen production includes a workbench 101, a test tank 102, a cover plate 103, a square fixture 104, two pole pieces 105, two diaphragm clamping plates 106, an alkali liquid circulation mechanism 107, and an AC impedance meter 108. The upper surface of the workbench 101 is provided with the test tank 102, and the AC impedance meter 108 is provided on one side of the test tank 102. The interior of the test tank 102 has a partition 109, and the partition 109 is located in the middle section of the test tank 102. A clamping groove 110 is provided on the partition 109, and the square fixture 104 is clamped at the clamping groove 110. The two pole pieces 105 are provided on both sides of the square fixture 104. An installation groove 111 is provided on the square fixture 104, and two of the diaphragm clamping plates 106 are clamped inside the installation groove 111. A diaphragm to be tested is placed between the two diaphragm clamping plates 106. Circular holes 112 are penetrated through the centers of the square fixture 104 and the two diaphragm clamping plates 106;

[0021] The alkali liquid circulation mechanism 107 is further provided on the workbench 101. The alkali liquid circulation mechanism 107 is used for circulating and delivering alkali liquid into the test tank 102. A temperature adjustment component is provided on the alkali liquid circulation mechanism 107, and the temperature adjustment component is used for adjusting the temperature of the alkali liquid in the test tank 102. The cover plate 103 is clamped at the upper end of the test tank 102. A through groove 113 is provided in the middle section of the cover plate 103, and the square fixture 104 is adapted to the through groove 113. The top end of the pole piece 105 extends into the through groove 113.

[0022] In this embodiment, after placing the pole pieces 105 on both sides of the square fixture 104, inserting the square fixture 104 into the clamping groove 110, placing the diaphragm to be tested between the two diaphragm clamping plates 106, inserting the two diaphragm clamping plates 106 into the square fixture 104, using the temperature adjustment component to control and adjust the temperature of the alkali liquid delivered into the test tank 102, using the alkali liquid circulation mechanism 107 to deliver the alkali liquid into the test tank 102, waiting for a specified time, using the AC impedance meter 108 to perform a resistance test, recording the resistance data at this time, and calculating the resistance data tested with the area of the circular hole 112, so as to obtain the surface resistance value of the diaphragm. With the above structure, when testing the surface resistance of the diaphragm, the test effect is better.

[0023] Further, the lye circulation mechanism 107 includes a lye circulation pump 114, a heating barrel 115, a delivery pipe 116 and a liquid return pipe 117. Liquid inlets 118 and liquid outlets 119 are respectively arranged at two ends of the test tank 102. The lye circulation pump 114 is installed on the workbench 101. The input end of the lye circulation pump 114 is connected to the heating barrel 115 through a pipeline. The delivery pipe 116 is arranged at the output end of the lye circulation pump 114. One end of the delivery pipe 116 away from the lye circulation pump 114 is connected to the liquid inlet 118. The liquid return pipe 117 is arranged between the input end of the heating barrel 115 and the liquid outlet 119.

[0024] In this embodiment, when the lye circulation pump 114 is started, the lye in the test tank 102 is conveyed into the heating barrel 115 through the liquid return pipe 117. Then, through the cooperation of the pipeline between the heating barrel 115 and the lye circulation pump 114 and the delivery pipe 116, the lye is conveyed into the test tank 102, thereby completing the flow of the lye in the test tank 102.

[0025] Further, the temperature adjustment component includes a thermometer 120 and an electric heating wire 121. The electric heating wire 121 and the thermometer 120 are arranged inside the heating barrel 115. Both the thermometer 120 and the electric heating wire 121 are electrically connected to the control terminal of the test equipment.

[0026] In this embodiment, the temperature of the lye in the heating barrel 115 is monitored in real time through the thermometer 120, and according to the monitored data, the power of the electric heating wire 121 is controlled in real time through the control terminal of the test equipment, thereby controlling the temperature of the lye in the heating barrel 115.

[0027] Further, placing slots 122 are arranged on both sides of the square fixture 104, and the two pole pieces 105 are respectively clamped into the corresponding placing slots 122.

[0028] In this embodiment, through the arrangement of the placing slots 122, it is convenient to install the pole pieces 105 on both sides of the square fixture 104.

[0029] Further, disassembly and assembly protrusions 123 are arranged at both ends of the upper surface of the cover plate 103.

[0030] In this embodiment, through the arrangement of the disassembly and assembly protrusions 123, it is convenient to complete the disassembly and assembly of the cover plate 103.

[0031] The above-disclosed is only a preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A test device for detecting the surface resistance of a diaphragm for hydrogen production by water electrolysis, characterized in that: It comprises a workbench, a test slot, a cover plate, a square fixture, two pole pieces, two diaphragm fixtures, an alkali solution circulation mechanism and an AC impedance meter. The test slot is arranged on the upper surface of the workbench, the AC impedance meter is arranged on one side of the test slot, a partition is arranged inside the test slot, the partition is located in the middle section of the test slot, a card slot is arranged on the partition, the square fixture is clamped at the card slot, the pole pieces are arranged on both sides of the square fixture, a mounting slot is arranged on the square fixture, two diaphragm fixtures are clamped inside the mounting slot, a diaphragm to be tested is placed between the two diaphragm fixtures, and circular holes are arranged through the centers of the square fixture and the two diaphragm fixtures; The alkali solution circulation mechanism is provided with a temperature regulating component, and the temperature regulating component is used to regulate the temperature of the alkali solution in the test tank. The alkali solution circulation mechanism is also provided on the workbench, and the alkali solution circulation mechanism is used to circulate and transport the alkali solution to the inside of the test tank. The upper end of the test tank is clamped with the cover plate, and the middle section of the cover plate is provided with a through groove, the square fixture is adapted to the through groove, and the top end of the electrode extends to the inside of the through groove.

2. The testing device for detecting the surface resistance of the diaphragm for hydrogen production by water electrolysis according to claim 1, characterized in that: The alkali liquid circulation mechanism includes an alkali liquid circulation pump, a heating barrel, a delivery pipe and a liquid return pipe. A liquid inlet and a liquid outlet are respectively provided at both ends of the test tank. The alkali liquid circulation pump is installed on the workbench. The input end of the alkali liquid circulation pump is connected to the heating barrel through a pipeline. The delivery pipe is provided at the output end of the alkali liquid circulation pump. One end of the delivery pipe away from the alkali liquid circulation pump is connected to the liquid inlet. The liquid return pipe is provided between the input end of the heating barrel and the liquid outlet.

3. The testing device for detecting the surface resistance of the diaphragm for hydrogen production by water electrolysis according to claim 2, characterized in that: The temperature adjustment component includes a thermometer and an electric heating wire. The electric heating wire and the thermometer are arranged inside the heating barrel. The thermometer and the electric heating wire are both electrically connected to the control terminal of the testing equipment.

4. The testing device for detecting the surface resistance of the diaphragm for hydrogen production by water electrolysis according to claim 3, characterized in that: Both sides of the square fixture are provided with placement slots, and the two pole pieces are respectively inserted into the corresponding placement slots.

5. The testing device for detecting the surface resistance of the diaphragm for hydrogen production by water electrolysis according to claim 4, characterized in that: Both ends of the upper surface of the cover plate are provided with disassembly and assembly protrusions.

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