CN221117638U - PEM electrolytic cell testing system - Google Patents
PEM electrolytic cell testing system Download PDFInfo
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- CN221117638U CN221117638U CN202323131082.7U CN202323131082U CN221117638U CN 221117638 U CN221117638 U CN 221117638U CN 202323131082 U CN202323131082 U CN 202323131082U CN 221117638 U CN221117638 U CN 221117638U
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 356
- 239000001257 hydrogen Substances 0.000 claims abstract description 125
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 125
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 238000005259 measurement Methods 0.000 claims abstract description 87
- 239000008367 deionised water Substances 0.000 claims abstract description 85
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 85
- 238000003860 storage Methods 0.000 claims abstract description 57
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000001301 oxygen Substances 0.000 claims abstract description 51
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 51
- 239000007789 gas Substances 0.000 claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 7
- 238000005868 electrolysis reaction Methods 0.000 abstract description 4
- 150000002431 hydrogen Chemical class 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- -1 hydrogen ions Chemical class 0.000 description 4
- 239000012466 permeate Substances 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005370 electroosmosis Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model discloses a PEM electrolytic cell testing system, which is applied to the technical field of water electrolysis hydrogen production, and comprises: the water outlet of the water storage and exhaust unit is connected with the deionized water inlet of the PEM electrolytic tank, and the air inlet of the water storage and exhaust unit is connected with the oxygen outlet of the PEM electrolytic tank; the water supply test unit is arranged at the bottom of the water storage and exhaust unit; the air inlet of the gas water-containing test unit is connected with the air outlet of the water storage exhaust unit; the air inlet of the hydrogen output test unit is connected with the hydrogen outlet of the PEM electrolytic tank; the test data recording unit is respectively connected with the water supply test unit, the gas water-containing test unit and the hydrogen production test unit. The measurement and recording of the running time and working current of the PEM electrolytic tank, the supply amount of deionized water, the residual amount of deionized water, the water content and the hydrogen content in the mixed gas can be realized, so that the accurate measurement of the anode water seepage amount and the cathode hydrogen seepage amount can be realized.
Description
Technical Field
The utility model relates to the technical field of water electrolysis hydrogen production, in particular to a PEM (proton exchange membrane) electrolytic tank testing system.
Background
The proton exchange membrane (Proton Exchange Membrane Fuel, PEM) electrolyzer is the main equipment for hydrogen production by water electrolysis, deionized water is filled in the water tank of the PEM electrolyzer, water molecules are subjected to oxidation reaction at the anode under the action of direct current to lose electrons to generate oxygen and hydrogen ions, then the electrons are transduced to the cathode through an external circuit, the hydrogen ions are conducted to the cathode through the proton exchange membrane under the action of an electric field and are subjected to reduction reaction at the cathode to obtain electrons to generate hydrogen, and thus the hydrogen production function is realized.
In the operation process of the PEM electrolytic tank, when a certain concentration difference or pressure difference exists between hydrogen and oxygen, cathode hydrogen permeates to the anode, water in the anode permeates to the cathode through the proton exchange membrane due to electroosmosis drag or concentration difference diffusion and the like, and the anode permeation quantity and the cathode permeation quantity are tested, so that the method is important for designing and optimizing the PEM electrolytic tank, however, the current PEM electrolytic tank testing system is difficult to accurately test the anode permeation quantity and the cathode permeation quantity of the PEM electrolytic tank.
Disclosure of utility model
The utility model provides a PEM electrolytic cell testing system, which is used for solving the problem that the anode water seepage amount and the cathode hydrogen seepage amount of a PEM electrolytic cell are difficult to accurately test in the prior art, and the technical scheme provided by the utility model is as follows:
The utility model provides a PEM electrolytic tank testing system, which comprises a direct current power supply module, a water storage and exhaust module, a water supply measuring module, a water content measuring module, a hydrogen production measuring module and a measuring data recording module, wherein the water storage and exhaust module is connected with the water supply measuring module;
The water outlet of the water storage and exhaust module is connected with the deionized water inlet of the PEM electrolytic tank, and the air inlet of the water storage and exhaust module is connected with the oxygen outlet of the PEM electrolytic tank; the water storage and exhaust module is used for supplying deionized water to the PEM electrolytic tank;
The power supply interface of the direct current power supply module is connected with the power supply interface of the PEM electrolytic tank; the direct current power supply module is used for providing direct current power for the PEM electrolytic tank so as to enable the PEM electrolytic tank to start to operate, or disconnecting the direct current power for the PEM electrolytic tank so as to enable the PEM electrolytic tank to end to operate;
the water supply measuring module is arranged at the bottom of the water storage and exhaust module; the water supply measurement module is used for measuring the deionized water supply quantity of the water storage and exhaust module before the PEM electrolytic cell starts to operate and the deionized water residual quantity of the water storage and exhaust module after the PEM electrolytic cell finishes operating;
The air inlet of the water content measuring module is connected with the air outlet of the water storage and air exhaust module; the water content measuring module is used for measuring the water content in the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode in the operation process of the PEM electrolytic tank discharged by the water storage and exhaust module;
The gas inlet of the hydrogen production amount measuring module is connected with the hydrogen outlet of the PEM electrolytic tank; the hydrogen production amount measuring module is used for measuring the hydrogen content generated by the cathode in the running process of the PEM electrolyzer;
The measurement data recording module is respectively connected with the water supply measurement module, the water content measurement module and the hydrogen production amount measurement module; the measurement data recording module is used for recording the running time and working current of the PEM electrolytic tank, the deionized water supply quantity, the deionized water residual quantity, the water content and the hydrogen content.
In one possible embodiment, the water storage and exhaust module comprises a deionized water supply device, a water supply control valve, a water tank, a liquid level sensor, a first condenser and a water pump; the water outlet of the deionized water supply device is connected with the water inlet of the water supply control valve; the water outlet of the water supply control valve is connected with the water inlet of the water tank; the water outlet of the water tank is connected with the water inlet of the water pump; the water outlet of the water pump is connected with the deionized water inlet of the PEM electrolytic tank; the air inlet of the first condenser is connected with the air outlet of the water tank, and the air outlet of the first condenser is connected with the air inlet of the water content measuring module; the liquid level sensor is arranged in the tank body of the water tank.
In one possible embodiment, the water-storage gas discharge module further comprises a conductivity meter and a first drain valve; the conductivity meter is arranged in the tank body of the water tank; the first drain valve is arranged at a drain outlet of the water tank.
In one possible embodiment, the water supply measurement module comprises a weigh scale; the weighing instrument is arranged at the bottom of the water tank and is connected with the measurement data recording module.
In one possible embodiment, the water content measurement module includes a hygrometer, a first flowmeter connected in sequence; the hygrometer and the first flowmeter are respectively connected with the measurement data recording module.
In one possible embodiment, the water content measurement module further comprises a first vent valve; the first exhaust valve is arranged behind the first flowmeter.
In one possible embodiment, the hydrogen production amount measurement module comprises a gas-water separation device, an oxygen removal device, a dryer and a second flowmeter which are connected in sequence; the second flowmeter is connected with the measurement data recording module.
In one possible embodiment, the gas-water separation device comprises a second condenser and a second drain valve; the second drain valve is arranged at a drain outlet of the second condenser.
In one possible embodiment, the hydrogen production amount measurement module further includes a second exhaust valve; the second exhaust valve is disposed after the second flowmeter.
In one possible embodiment, the PEM electrolyzer test system provided by the present utility model further comprises a first temperature sensor, a second temperature sensor, a first pressure sensor, and a second pressure sensor; the first temperature sensor and the first pressure sensor are arranged on a connecting pipeline between the water outlet of the water storage and exhaust module and the deionized water inlet of the PEM electrolytic tank; the second temperature sensor and the second pressure sensor are arranged on a connecting pipeline between the air inlet of the water storage and exhaust module and the oxygen outlet of the PEM electrolytic tank.
The beneficial effects of the utility model are as follows:
According to the utility model, the deionized water supply quantity of the water storage and exhaust module and the deionized water residual quantity of the water storage and exhaust module after the PEM electrolytic tank starts to operate are measured through the water supply measurement module, the water content of the mixed gas of oxygen generated by the anode and hydrogen permeated by the cathode in the operation process of the PEM electrolytic tank discharged by the water storage and exhaust module is measured through the water content measurement module, the operation time and working current of the PEM electrolytic tank are recorded through the measurement data recording module, the measurement and recording of the deionized water supply quantity, the deionized water residual quantity, the water content of the mixed gas of oxygen generated by the anode and hydrogen permeated by the cathode, the operation time and working current of the PEM electrolytic tank can be realized, and the operation time and working current of the PEM electrolytic tank can be realized, so that the water content of the mixed gas of oxygen generated by the anode and hydrogen permeated by the cathode, the operation time and working current of the PEM electrolytic tank can be accurately measured, and the hydrogen permeation quantity of the anode and cathode can be accurately measured, and the hydrogen permeation quantity of the electrolytic tank can be accurately designed based on the measurement data of the measurement data recording of the operation time and the hydrogen permeation quantity of the anode and the cathode.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
FIG. 1 is a schematic diagram of the composition of a PEM electrolyzer in accordance with an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a component of a PEM electrolyzer test system in accordance with an embodiment of the present utility model;
FIG. 3 is a schematic diagram of another component of a PEM electrolyzer test system in accordance with an embodiment of the present utility model.
In the illustration, 10-water storage exhaust module; 11-deionized water supply means; 12-a water supply control valve; 13-a water tank; 14-a liquid level sensor; 15-a first condenser; 16-a water pump; 17-conductivity meter; 18-a first drain valve; 20-a water supply measurement module; 21-a weighing instrument; 30-a water content measuring module; 31-hygrometer; 32-a first flowmeter; 33-a first exhaust valve; 40-hydrogen production amount measuring module; 41-a gas-water separation device; 411-a second condenser; 412-a second drain valve; 42-deoxidizing device; a 43-dryer; 44-a second flowmeter; 45-a second exhaust valve; 50-a measurement data recording module; 51-recorder; 60-direct current power supply module; 71-a first temperature sensor; 72-a second temperature sensor; 73-a first pressure sensor; 74-a second pressure sensor.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
A PEM electrolyzer is the primary device for the production of hydrogen by water electrolysis and, referring to fig. 1, is composed principally of an anode end plate, a cathode end plate, an anode diffusion layer, a cathode diffusion layer, an anode catalyst layer, a cathode catalyst layer, and a proton exchange membrane. Wherein the anode diffusion layer, the anode catalytic layer, the proton exchange membrane, the cathode catalytic layer and the cathode diffusion layer are core sites for material transmission and electrochemical reaction of the whole PEM electrolytic cell. Under the action of direct current, water molecules in a water tank of the PEM electrolytic tank undergo oxidation reaction at an anode, electrons are lost to generate oxygen and hydrogen ions, then the electrons are conducted to a cathode through an external circuit, the hydrogen ions are conducted to the cathode through a proton exchange membrane under the action of an electric field, and reduction reaction is performed at the cathode to obtain electrons to generate hydrogen, so that the hydrogen production function is realized. In the process, when a certain concentration difference or pressure difference exists between hydrogen and oxygen, hydrogen in the cathode can permeate to the anode, water in the anode can permeate to the cathode, and the testing of the anode permeation quantity and the cathode permeation quantity is important to design and optimize a PEM (proton exchange membrane) electrolytic cell, however, the current PEM electrolytic cell testing system is difficult to realize accurate testing of the anode permeation quantity and the cathode permeation quantity of the PEM electrolytic cell.
Therefore, the embodiment of the utility model provides a PEM (proton exchange membrane) electrolytic cell testing system, which is used for supplying deionized water to a PEM electrolytic cell through a water storage and exhaust module so that after a water tank and a pipeline of the PEM electrolytic cell are filled with deionized water, the water supply quantity of the water storage and exhaust module before the PEM electrolytic cell starts to operate is measured through a water supply measuring module; then, a direct current power supply module is used for providing a direct current power supply for the PEM electrolytic tank so as to enable the PEM electrolytic tank to start to operate, a water content measuring module is used for measuring the water content in the mixed gas of oxygen generated by an anode and hydrogen permeated by a cathode in the operation process of the PEM electrolytic tank discharged by a water storage and exhaust module, a hydrogen content measuring module is used for simultaneously measuring the hydrogen content generated by the cathode in the operation process of the PEM electrolytic tank, and a measuring data recording module is used for recording the water content in the mixed gas of oxygen generated by the anode and hydrogen permeated by the cathode in the operation process of the PEM electrolytic tank and the hydrogen content generated by the cathode; and after the operation of the PEM electrolytic tank is carried out for a period of time, the direct current power supply of the PEM electrolytic tank is disconnected through the direct current power supply module so that the PEM electrolytic tank is finished operating, the deionized water residual quantity of the water storage and exhaust module after the PEM electrolytic tank is finished operating is measured through the water supply measurement module, and the operation time and the working current of the PEM electrolytic tank are recorded through the measurement data recording module. In this way, through the water supply measurement module, the water content measurement module, the hydrogen production measurement module and the measurement data recording module, the measurement and recording of the hydrogen content, the deionized water supply, the deionized water residual quantity, the water content in the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode, the running time and the working current of the PEM electrolytic tank can be realized, so that the anode water permeation quantity can be accurately measured based on the deionized water supply, the deionized water residual quantity, the water content in the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode, the running time and the working current of the PEM electrolytic tank, and the cathode hydrogen permeation quantity can be accurately measured based on the hydrogen content, the running time and the working current of the PEM electrolytic tank, and further, the accurate and effective data reference can be provided for designing and optimizing the PEM electrolytic tank.
Next, a detailed description will be given of a PEM electrolyzer test system provided by an embodiment of the present utility model. Referring to fig. 2, the PEM electrolyzer test system provided by the embodiment of the present utility model comprises a water storage and exhaust module 10, a water supply measurement module 20, a water content measurement module 30, a hydrogen production amount measurement module 40, a measurement data recording module 50 and a dc power supply module 60;
The water outlet of the water storage and exhaust module 10 is connected with the deionized water inlet of the PEM electrolytic tank, and the air inlet of the water storage and exhaust module 10 is connected with the oxygen outlet of the PEM electrolytic tank; the water storage and exhaust module 10 is used for supplying deionized water to the PEM electrolytic tank;
The power supply interface of the direct current power supply module 60 is connected with the power supply interface of the PEM electrolytic cell; the DC power module 60 is used for providing DC power for the PEM electrolyzer to start the operation of the PEM electrolyzer or disconnecting the DC power for the PEM electrolyzer to end the operation of the PEM electrolyzer;
The water supply measuring module 20 is arranged at the bottom of the water storage and exhaust module 10; the water supply measurement module 20 is used for measuring the deionized water supply amount of the water storage and exhaust module 10 before the PEM electrolytic cell starts to operate and the deionized water residual amount of the water storage and exhaust module 10 after the PEM electrolytic cell finishes operating;
The air inlet of the water content measuring module 30 is connected with the air outlet of the water storage and air exhaust module 10; the water content measuring module 30 is used for measuring the water content in the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode during the operation of the PEM electrolytic tank discharged by the water storage and exhaust module 10;
The gas inlet of the hydrogen production amount measuring module 40 is connected with the hydrogen outlet of the PEM electrolyzer; the hydrogen production amount measuring module 40 is used for measuring the hydrogen content generated by the cathode during the operation of the PEM electrolyzer;
The measurement data recording module 50 is respectively connected with the water supply measurement module 20, the water content measurement module 30 and the hydrogen production amount measurement module 40; the measurement data recording module 50 is used to record the operating time and current of the PEM electrolyzer, the deionized water supply, the deionized water remaining, the water content, and the hydrogen gas content.
In the embodiment of the utility model, when the PEM electrolytic tank is tested, deionized water is firstly supplied to the PEM electrolytic tank through the water storage and exhaust module 10, so that after the water tank and the pipeline of the PEM electrolytic tank are filled with deionized water, the deionized water supply quantity of the water storage and exhaust module 10 before the PEM electrolytic tank starts to operate is measured through the water supply measuring module 20, and the deionized water supply quantity is recorded through the measuring data recording module 50; subsequently, the direct current power supply module 60 provides direct current power for the PEM electrolyzer, so that the PEM electrolyzer starts to electrolyze water, namely the PEM electrolyzer starts to operate; in the operation process of the PEM electrolyzer, the mixed gas of oxygen generated by the anode of the PEM electrolyzer and hydrogen permeated by the cathode flows into the water storage and exhaust module 10 from the oxygen outlet of the PEM electrolyzer, then flows into the water content measuring module 30 through the exhaust port of the water storage and exhaust module 10, the water content measuring module 30 continuously measures the water content in the mixed gas of oxygen generated by the anode and hydrogen permeated by the cathode in the operation process of the PEM electrolyzer, and the water content in the mixed gas of oxygen generated by the anode and hydrogen permeated by the cathode is recorded by the measurement data recording module 50; meanwhile, the mixed gas of the hydrogen generated by the cathode of the PEM electrolytic tank and the water vapor permeated by the anode flows into the hydrogen production amount measuring module 40 through the hydrogen outlet of the PEM electrolytic tank, the hydrogen production amount measuring module 40 continuously measures the hydrogen content generated by the cathode in the operation process of the PEM electrolytic tank, and the hydrogen content is recorded through the measurement data recording module 50; after that, after the operation of the PEM electrolyzer is performed for a period of time, the dc power supply module 60 is used for disconnecting the dc power supply for the PEM electrolyzer so that the operation of the PEM electrolyzer is finished, the deionized water remaining amount of the water storage and exhaust module 10 after the operation of the PEM electrolyzer is finished is measured by the water supply measurement module 20, the deionized water remaining amount is recorded by the measurement data recording module 50, and the operation time and the working current of the PEM electrolyzer are recorded by the measurement data recording module 50.
In this way, the anode water seepage can be accurately measured based on the deionized water supply, the deionized water residual quantity, the water content in the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode, the running time and the working current of the PEM electrolytic cell by measuring and recording the deionized water supply, the deionized water residual quantity, the water content in the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode, and the running time and the working current of the PEM electrolytic cell; meanwhile, by measuring and recording the hydrogen content, the running time and the working current of the PEM electrolytic cell, the cathode hydrogen permeation quantity can be accurately measured based on the hydrogen content, the running time and the working current of the PEM electrolytic cell; and can provide accurate and effective data reference for designing and optimizing the PEM electrolytic tank.
In one possible embodiment, referring to fig. 3, the water storage and exhaustion module 10 includes a deionized water supply device 11, a water supply control valve 12, a water tank 13, a liquid level sensor 14, a first condenser 15, and a water pump 16; the water outlet of the deionized water supply device 11 is connected with the water inlet of the water supply control valve 12; the water outlet of the water supply control valve 12 is connected with the water inlet of the water tank 13; the water outlet of the water tank 13 is connected with the water inlet of the water pump 16; the water outlet of the water pump 16 is connected with the deionized water inlet of the PEM electrolytic cell; the air inlet of the first condenser 15 is connected with the air outlet of the water tank 13, and the air outlet of the first condenser 15 is connected with the air inlet of the water content measuring module 30; the liquid level sensor 14 is disposed in the tank 13.
In the embodiment of the utility model, the water supply control valve 12 can be a manual valve or an electromagnetic valve; in order to fill deionized water in the water tank and the pipeline of the PEM electrolytic tank, when the PEM electrolytic tank is tested, the water supply control valve 12 is firstly opened, so that the deionized water supply device 11 supplies deionized water into the water tank 13, after the deionized water in the water tank 13 reaches a set liquid level through the liquid level sensor 14, the water supply control valve 12 is closed, the water pump 16 is opened, and the pipeline and the water tank 13 are filled with deionized water; then, the deionized water supply amount of the water storage and exhaust module 10 before the PEM electrolytic tank starts to operate is measured by the water supply measuring module 20; subsequently, supplying direct current to the PEM electrolyzer by a direct current power supply, so that the PEM electrolyzer starts to electrolyze water, namely the PEM electrolyzer starts to operate; during operation of the PEM electrolyzer, the mixed gas of oxygen generated by the anode of the PEM electrolyzer and hydrogen permeated by the cathode flows into the water tank 13 from the oxygen outlet of the PEM electrolyzer, then flows into the first condenser 15 through the exhaust port of the water tank 13, the first condenser 15 condenses and flows water vapor in the mixed gas of oxygen and hydrogen back into the water tank 13, the mixed gas of oxygen and hydrogen flows into the water content measuring module 30 through the exhaust port of the first condenser 15, and the water content measuring module 30 continuously measures the water content in the mixed gas of oxygen generated by the anode and hydrogen permeated by the cathode during operation of the PEM electrolyzer; meanwhile, the mixed gas of the hydrogen generated by the cathode of the PEM electrolytic tank and the water vapor permeated by the anode flows into the hydrogen production amount measuring module 40 through the hydrogen outlet of the PEM electrolytic tank, and the hydrogen production amount measuring module 40 continuously measures the hydrogen content in the operation process of the PEM electrolytic tank; at the same time, the running time and operating current of the PEM electrolyzer, the deionized water supply, the deionized water remaining, the water content in the mixed gas and the hydrogen content were recorded by the measurement data recording module 50.
In one possible embodiment, referring to fig. 3, the water-stored gas discharge module 10 further includes a conductivity meter 17 and a first drain valve 18; the conductivity meter 17 is arranged in the tank body of the water tank 13; the first drain valve 18 is provided at a drain port of the water tank 13.
In the embodiment of the present utility model, the first drain valve 18 may be a manual valve or an electromagnetic valve; in the operation process of the PEM electrolytic tank, the conductivity meter 17 can measure the conductivity of deionized water in the water tank 13, when the conductivity of the deionized water is larger than a set threshold value, the PEM electrolytic tank test can be interrupted, the first drain valve 18 is opened to drain water, after the deionized water in the water tank 13 and the pipeline is drained, the first drain valve 18 is closed, the water supply control valve 12 is opened to supply the deionized water to the PEM electrolytic tank, and after the water tank and the pipeline of the PEM electrolytic tank are filled with the deionized water, the PEM electrolytic tank test is continued, so that the problems that the hydrogen production performance of the PEM electrolytic tank is influenced due to the too high conductivity of the deionized water in the water tank 13 and the accuracy of the test result of the PEM electrolytic tank is influenced can be effectively avoided.
In one possible embodiment, referring to fig. 3, the water supply measurement module 20 includes a weight 21; the weighing instrument 21 is arranged at the bottom of the water tank 13, and the weighing instrument 21 is connected with the measurement data recording module 50.
In the embodiment of the utility model, the deionized water supply quantity before the operation of the PEM electrolytic cell is started and the deionized water residual quantity after the operation of the PEM electrolytic cell is finished are measured by a weighing instrument 21 arranged at the bottom of the water tank 13, and recorded by a measurement data recording module 50.
In one possible embodiment, referring to fig. 3, the moisture content measurement module 30 includes a hygrometer 31 and a first flow meter 32 connected in sequence; the hygrometer 31 and the first flow meter 32 are connected to a measurement data recording module 50, respectively.
In the embodiment of the present utility model, by monitoring and recording the front-rear numerical variation of the hygrometer 31 and the gas flow measured by the first flowmeter 32, the water content of the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode in the operation process of the PEM electrolyzer can be accurately measured, so that the anode water permeation quantity can be accurately measured in combination with the deionized water supply quantity, the deionized water residual quantity and the operation time and the working current of the PEM electrolyzer, for example, the water permeation quantity of the anode can be accurately measured based on the humidity value of the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode, which is recorded by the measurement data recording module 50 in the operation process of the PEM electrolyzer, and the gas flow of the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode, which is measured by the first flowmeter 32, and the water content G2 of the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode, and the deionized water consumption G3 in the operation process of the PEM electrolyzer can be accurately calculated based on the running time and the working current of the PEM electrolyzer, which is recorded by the measurement data recording module 50, so that the water supply quantity of the deionized water G1 and the deionized water residual quantity G4 recorded by the measurement data recording module 50 and the deionized water consumption G3, and the water consumption G3, which are accurately measured based on the water permeation quantity of the mixed gas generated by the PEM and the oxygen generated by the anode and the hydrogen permeated by the anode and the hydrogen gas, and the oxygen gas, and the water consumption G2.
In one possible embodiment, referring to FIG. 3, the water content measurement module 30 further includes a first vent valve 33; the first exhaust valve 33 is disposed behind the first flowmeter 32.
In the embodiment of the present utility model, the first exhaust valve 33 may be a manual valve or an electromagnetic valve; the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode during the operation of the PEM electrolyzer can be directly discharged, and the discharge can be controlled by a first exhaust valve 33 arranged behind the first flowmeter 32. Specifically, the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode during the operation of the PEM electrolyzer can be discharged to a subsequent treatment process system (such as an oxygen recovery system and the like).
In one possible embodiment, referring to fig. 3, hydrogen production amount measurement module 40 includes a gas-water separation device 41, an oxygen removal device 42, a dryer 43, and a second flowmeter 44, connected in sequence; the second flowmeter 44 is connected to a measurement data recording module 50.
In the embodiment of the utility model, the mixed gas of hydrogen and oxygen generated by the cathode and permeated by the anode in the operation process of the PEM electrolyzer is separated from water vapor by the gas-water separation device 41, then the mixed gas of hydrogen and oxygen is used for removing oxygen in the mixed gas by the oxygen removal device 42, then the hydrogen enters the dryer 43 for drying and then enters the second flowmeter 44, the second flowmeter 44 continuously measures the actual hydrogen flow and records by the measurement data recording module 50, so that the measurement and recording of the actual hydrogen flow of the hydrogen generated by the cathode in the operation process of the PEM electrolyzer can be realized, the hydrogen content in the operation process of the PEM electrolyzer can be measured based on the actual hydrogen flow recorded by the measurement data recording module 50 in the operation time range of the PEM electrolyzer, and the cathode hydrogen permeation amount can be accurately measured by combining the operation time and the working current of the PEM electrolyzer. For example, the actual hydrogen flow recorded by the measurement data recording module 50 during the operation of the PEM electrolyzer, the actual hydrogen content value L1 during the operation of the PEM electrolyzer, and the theoretical hydrogen content value L2 during the operation of the PEM electrolyzer, based on the operation time and the operation current of the PEM electrolyzer recorded by the measurement data recording module 50, can be calculated, so that the cathode hydrogen permeation quantity L3 of the PEM electrolyzer, that is, l3=l2-L1, can be accurately measured based on the actual hydrogen content value L1 and the theoretical hydrogen content value L2.
In one possible embodiment, referring to fig. 3, the gas-water separation device 41 includes a second condenser 411 and a second drain valve 412; the second drain valve 412 is provided at a drain port of the second condenser 411.
In the embodiment of the present utility model, the second drain valve 412 may be a manual valve or an electromagnetic valve; in the gas-water separator 41, the hydrogen gas generated from the cathode and the mixed gas of the anode permeated and the oxygen gas during the operation of the PEM electrolyzer are condensed by the second condenser 411, so that the water vapor is separated from the mixed gas of the hydrogen gas and the oxygen gas, and the liquid water condensed by the second condenser 411 is discharged through the second drain valve 412.
In one possible embodiment, referring to FIG. 3, hydrogen production amount measurement module 40 further includes a second exhaust valve 45; a second exhaust valve 45 is provided after the second flowmeter 44.
In the embodiment of the present utility model, the second exhaust valve 45 may be a manual valve or an electromagnetic valve; the hydrogen generated at the cathode during operation of the PEM electrolyzer may be vented directly or may be controlled by a second vent valve 45 disposed after the second flowmeter 44. In particular, hydrogen generated at the cathode during operation of the PEM electrolyzer may be vented to a subsequent hydrogen production process system (e.g., a pressurized liquefaction system, etc.).
In one possible implementation, referring to FIG. 3, the PEM electrolyzer test system provided by the present embodiment further includes a first temperature sensor 71, a second temperature sensor 72, a first pressure sensor 73, and a second pressure sensor 74; the first temperature sensor 71 and the first pressure sensor 73 are arranged on a connecting pipeline between the water outlet of the water storage and exhaust module 10 and the deionized water inlet of the PEM electrolytic tank; the second temperature sensor 72 and the second pressure sensor 74 are arranged on a connecting pipeline between the air inlet of the water storage and exhaust module 10 and the oxygen outlet of the PEM electrolyzer; the first temperature sensor 71, the second temperature sensor 72, the first pressure sensor 73 and the second pressure sensor 74 are connected to the measurement data recording module 50, respectively.
In the embodiment of the utility model, the temperature and the pressure of the deionized water inlet and the oxygen outlet of the PEM electrolytic tank are measured through the first temperature sensor 71, the second temperature sensor 72, the first pressure sensor 73 and the second pressure sensor 74, and recorded through the measurement data recording module 50, so that the temperature and the pressure of the deionized water inlet and the oxygen outlet in the operation process of the PEM electrolytic tank can be measured and recorded, and the hydrogen production rate of the PEM electrolytic tank can be accurately measured based on the temperature and the pressure of the deionized water inlet and the oxygen outlet in the operation process of the PEM electrolytic tank.
In one possible implementation, referring to fig. 3, the measurement data recording module 50 provided in the embodiment of the present utility model includes a recorder 51.
In the embodiment of the utility model, the real-time recording of the deionized water supply amount, the deionized water residual amount, the water content in the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode, the hydrogen content, the running time and the working current of the PEM electrolytic tank can be realized through the recorder 51, so that the anode water permeation amount and the cathode hydrogen permeation amount can be accurately measured based on the deionized water supply amount, the deionized water residual amount, the water content in the mixed gas, the hydrogen content, the running time and the working current of the PEM electrolytic tank recorded by the recorder 51, and further, the accurate and effective data reference can be provided for designing and optimizing the PEM electrolytic tank.
In one possible embodiment, the water supply measurement module 20, the water content measurement module 30, and the hydrogen production amount measurement module 40 are connected to the measurement data recording module 50 by signal lines, respectively. That is, in the embodiment of the present utility model, the weighing cell 21, the hygrometer 31, the first flowmeter 32 and the second flowmeter 44 are connected to the measurement data recording module 50 through signal lines, respectively.
Based on the above embodiments, the present utility model provides a PEM electrolyzer test control system, which includes the PEM electrolyzer test system provided by the present utility model, and a PEM electrolyzer test control device for controlling the PEM electrolyzer test system. In the embodiment of the utility model, a water supply control valve 12, a water pump 16, a first drain valve 18, a second drain valve 412, a first drain valve 33 and a second drain valve 45 in the PEM electrolytic cell test system are all electromagnetic valves, and a PEM electrolytic cell test control device is electrically connected with the water supply control valve 12, the water pump 16, the first drain valve 18, the second drain valve 412, the first drain valve 33 and the second drain valve 45 in the PEM electrolytic cell test system respectively; the PEM electrolyzer test control is also communicatively coupled to a level sensor 14, conductivity meter 17, and recorder 51, respectively, in a PEM electrolyzer test system.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present utility model without departing from the spirit or scope of the embodiments of the utility model. Thus, if such modifications and variations of the embodiments of the present utility model fall within the scope of the claims and the equivalents thereof, the present utility model is also intended to include such modifications and variations.
Claims (10)
1. The PEM electrolytic cell testing system is characterized by comprising a direct current power supply module, a water storage and exhaust module, a water supply measuring module, a water content measuring module, a hydrogen production measuring module and a measuring data recording module;
The water outlet of the water storage and exhaust module is connected with the deionized water inlet of the PEM electrolytic tank, and the air inlet of the water storage and exhaust module is connected with the oxygen outlet of the PEM electrolytic tank; the water storage and exhaust module is used for supplying deionized water to the PEM electrolytic tank;
The power supply interface of the direct current power supply module is connected with the power supply interface of the PEM electrolytic tank; the direct current power supply module is used for providing direct current power for the PEM electrolytic tank so as to enable the PEM electrolytic tank to start to operate, or disconnecting the direct current power for the PEM electrolytic tank so as to enable the PEM electrolytic tank to end to operate;
The water supply measurement module is arranged at the bottom of the water storage and exhaust module; the water supply measurement module is used for measuring the deionized water supply quantity of the water storage and exhaust module before the PEM electrolytic cell starts to operate and the deionized water residual quantity of the water storage and exhaust module after the PEM electrolytic cell finishes operating;
The air inlet of the water content measuring module is connected with the air outlet of the water storage and air exhaust module; the water content measuring module is used for measuring the water content in the mixed gas of the oxygen generated by the anode and the hydrogen permeated by the cathode in the operation process of the PEM electrolytic tank discharged by the water storage and exhaust module;
The air inlet of the hydrogen production amount measuring module is connected with the hydrogen outlet of the PEM electrolytic tank; the hydrogen production amount measuring module is used for measuring the content of hydrogen produced by a cathode in the running process of the PEM electrolyzer;
the measurement data recording module is respectively connected with the water supply measurement module, the water content measurement module and the hydrogen production amount measurement module; the measurement data recording module is used for recording the running time and working current of the PEM electrolytic tank, the deionized water supply quantity, the deionized water residual quantity, the water content and the hydrogen content.
2. The PEM electrolyzer test system of claim 1 wherein said water storage and exhaust module comprises a deionized water supply, a water supply control valve, a water tank, a liquid level sensor, a first condenser, and a water pump; the water outlet of the deionized water supply device is connected with the water inlet of the water supply control valve; the water outlet of the water supply control valve is connected with the water inlet of the water tank; the water outlet of the water tank is connected with the water inlet of the water pump; the water outlet of the water pump is connected with the deionized water inlet of the PEM electrolytic tank; the air inlet of the first condenser is connected with the air outlet of the water tank, and the air outlet of the first condenser is connected with the air inlet of the water content measuring module; the liquid level sensor is arranged in the tank body of the water tank.
3. The PEM electrolyzer test system of claim 2 wherein said water-storage gas discharge module further comprises a conductivity meter and a first drain valve; the conductivity meter is arranged in the tank body of the water tank; the first drain valve is arranged at a drain outlet of the water tank.
4. The PEM electrolyzer test system of claim 2 wherein said water supply measurement module comprises a weigh scale; the weighing instrument is arranged at the bottom of the water tank and is connected with the measurement data recording module.
5. The PEM electrolyzer test system of claim 1 wherein said water content measurement module comprises a hygrometer, a first flow meter connected in sequence; the hygrometer and the first flowmeter are respectively connected with the measurement data recording module.
6. The PEM electrolyzer test system of claim 5 wherein said water content measurement module further comprises a first vent valve; the first exhaust valve is arranged behind the first flowmeter.
7. The PEM electrolyzer test system of any one of claims 1-6 wherein said hydrogen production measurement module comprises a gas-water separation device, an oxygen removal device, a dryer, and a second flowmeter connected in sequence; the second flowmeter is connected with the measurement data recording module.
8. The PEM electrolyzer test system of claim 7 wherein said gas-water separation device comprises a second condenser and a second drain valve; the second drain valve is disposed at a drain port of the second condenser.
9. The PEM electrolyzer test system of claim 7 wherein said hydrogen production measurement module further comprises a second vent valve; the second exhaust valve is disposed behind the second flowmeter.
10. The PEM electrolyzer test system of claim 1 further comprising a first temperature sensor, a second temperature sensor, a first pressure sensor, and a second pressure sensor; the first temperature sensor and the first pressure sensor are arranged on a connecting pipeline between the water outlet of the water storage and exhaust module and the deionized water inlet of the PEM electrolytic tank; the second temperature sensor and the second pressure sensor are arranged on a connecting pipeline between an air inlet of the water storage and exhaust module and an oxygen outlet of the PEM electrolytic tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202323131082.7U CN221117638U (en) | 2023-11-20 | 2023-11-20 | PEM electrolytic cell testing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202323131082.7U CN221117638U (en) | 2023-11-20 | 2023-11-20 | PEM electrolytic cell testing system |
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| CN221117638U true CN221117638U (en) | 2024-06-11 |
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| CN202323131082.7U Active CN221117638U (en) | 2023-11-20 | 2023-11-20 | PEM electrolytic cell testing system |
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