CN221988681U - A PEM electrolyzer testing device - Google Patents
A PEM electrolyzer testing device Download PDFInfo
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- CN221988681U CN221988681U CN202420377134.4U CN202420377134U CN221988681U CN 221988681 U CN221988681 U CN 221988681U CN 202420377134 U CN202420377134 U CN 202420377134U CN 221988681 U CN221988681 U CN 221988681U
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 256
- 239000001257 hydrogen Substances 0.000 claims abstract description 103
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 103
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000004458 analytical method Methods 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 26
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 23
- 239000001301 oxygen Substances 0.000 claims description 41
- 229910052760 oxygen Inorganic materials 0.000 claims description 41
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 39
- 238000010438 heat treatment Methods 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 19
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- 238000002242 deionisation method Methods 0.000 claims description 8
- 238000010926 purge Methods 0.000 claims description 7
- 239000002274 desiccant Substances 0.000 claims description 6
- 239000008236 heating water Substances 0.000 claims description 2
- 239000008213 purified water Substances 0.000 claims 4
- 238000005070 sampling Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 150000002431 hydrogen Chemical class 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004868 gas analysis Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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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
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
本申请实施例提供了一种PEM电解槽测试装置，属于制氢技术领域。PEM电解槽测试装置包括电解槽模块、纯水模块和氢气处理模块，电解槽模块包括电解电源和PEM电解槽，电解电源用于向PEM电解槽供电；纯水模块用于向PEM电解槽提供纯水，PEM电解槽的阳极出口与纯水模块的循环水入口连通；氢气处理模块与PEM电解槽的阴极出口连通，氢气处理模块用于去除阴极出口所排出气体中的水；电解槽模块的数量设为多个，多个氢气处理模块的出气口的支路共同连接至氢气分析模块，各个氢气处理模块的出气口与氢气分析模块之间的支路上设置有第一阀门。这种PEM电解槽测试装置能够多支路不同工况的取样测试，提高测试效率。
The embodiment of the present application provides a PEM electrolyzer test device, which belongs to the field of hydrogen production technology. The PEM electrolyzer test device includes an electrolyzer module, a pure water module and a hydrogen processing module. The electrolyzer module includes an electrolysis power supply and a PEM electrolyzer. The electrolysis power supply is used to supply power to the PEM electrolyzer; the pure water module is used to provide pure water to the PEM electrolyzer, and the anode outlet of the PEM electrolyzer is connected to the circulating water inlet of the pure water module; the hydrogen processing module is connected to the cathode outlet of the PEM electrolyzer, and the hydrogen processing module is used to remove water from the gas discharged from the cathode outlet; the number of electrolyzer modules is set to multiple, and the branches of the gas outlets of multiple hydrogen processing modules are connected to the hydrogen analysis module together, and a first valve is provided on the branch between the gas outlet of each hydrogen processing module and the hydrogen analysis module. This PEM electrolyzer test device can perform sampling tests under different working conditions of multiple branches, thereby improving test efficiency.
Description
Technical Field
The application relates to the technical field of hydrogen production, in particular to a PEM (proton exchange membrane) electrolytic tank testing device.
Background
The hydrogen production technology by using pure water as raw material and proton exchange membrane as diaphragm is characterized by that the surface of the hydrogen production technology is covered with catalyst, under the action of direct current, the pure water is reacted into hydrogen and oxygen. The proton exchange membrane is made of perfluorosulfonic acid, so that on one hand, electron conduction can be effectively prevented, and on the other hand, gas channeling between the anode and the cathode can be blocked. The PEM water electrolysis technology has the characteristic of strong anti-interference, can be suitable for unstable electric energy output such as photovoltaic power generation, wind power generation, tidal power generation and the like, and can realize green hydrogen preparation from the source.
At present, the performance of the PEM electrolytic water directly affects the hydrogen production efficiency of the whole system when the core parts of the PEM electrolytic water are connected with the PEM electrolytic tank, the cost of the electrolytic tank accounts for 70% of the cost of the whole system, so the improvement of the product performance of the electrolytic tank and the reduction of the cost are very important, the corresponding test requirements are also rapidly increased for the continuously developed PEM electrolytic tank technology, the current electrolytic tank has longer test universal time period and complex and changeable test working conditions, and a large number of accurate test station requirements are the problems which need to be solved at present.
Disclosure of utility model
The embodiment of the application provides a PEM electrolytic tank testing device which can be used for sampling and testing different working conditions of multiple branches and improves the testing efficiency.
The embodiment of the application provides a PEM (proton exchange membrane) electrolytic cell testing device, which comprises an electrolytic cell module, a pure water module and a hydrogen treatment module, wherein the electrolytic cell module comprises an electrolytic power supply and a PEM electrolytic cell, and the electrolytic power supply is used for supplying power to the PEM electrolytic cell; the pure water module is used for providing pure water for the PEM electrolytic tank, and an anode outlet of the PEM electrolytic tank is communicated with a circulating water inlet of the pure water module; the hydrogen treatment module is communicated with a cathode outlet of the PEM electrolytic tank and is used for removing water in gas discharged from the cathode outlet; the number of the electrolytic tank modules is set to be multiple, the number of the hydrogen treatment modules corresponds to the number of the electrolytic tank modules one by one, the branches of the air outlets of the hydrogen treatment modules are connected to the hydrogen analysis modules together, and first valves are arranged on the branches between the air outlets of the hydrogen treatment modules and the hydrogen analysis modules.
In this scheme, electrolysis power supply provides the PEM electrolysis cell with power, and the pure water module provides the PEM electrolysis cell with pure water, and during the electrolysis of PEM electrolysis cell, the positive pole export of PEM electrolysis cell is rich in a large amount of oxygen, mixes in water, then together flow back to the constant temperature water pitcher. The hydrogen produced at the cathode outlet of the PEM electrolyzer contains a large amount of water vapor and a small amount of oxygen, the oxygen content in the hydrogen is an important indicator for detecting the electrolyzer performance, and the hydrogen analysis module cannot have water under the working conditions. The water vapor contained in the gas can be removed through the hydrogen treatment module, then the gas flows to the hydrogen analysis module, and the oxygen content in the hydrogen is measured through the hydrogen analysis module. The number of the electrolytic tank modules in the scheme is set to be a plurality of, and the plurality of electrolytic tank modules are connected with the hydrogen analysis module together, namely, a multi-branch sampling collection is adopted to collect the gas analysis mode of the main road, the hydrogen analysis module is not required to be arranged on each branch, only one group of hydrogen analysis modules are required to be arranged, the arrangement space and the cost of the sensor are saved, the result deviation caused by the difference of the sensor is eliminated, and the accuracy of the test result is improved. And the first valves are arranged on the branches between the gas outlets of the hydrogen treatment modules and the hydrogen analysis modules, and can control the on-off of the branches corresponding to the electrolytic tank modules and the hydrogen analysis modules so as to realize the respective sampling analysis of multiple branches.
In some embodiments, the air outlet of each hydrogen treatment module is connected to a tail pipe, and the air inlet of the tail pipe is located between the air outlet of each hydrogen treatment module and the first valve.
In the above technical scheme, the tail pipeline is connected with the air outlets of the hydrogen treatment modules, so that the plurality of electrolytic tank modules can carry out electrolytic work at the same time, and each electrolytic tank module can be independently provided with different test working conditions without mutual influence. When the hydrogen of one of the electrolytic tank modules is sampled and analyzed, the first valves on the branches of the other electrolytic tank modules are closed, so that the hydrogen of the other electrolytic tank modules is discharged outside through the tail exhaust pipeline. After the sampling analysis of one of the electrolytic tank modules is completed, the first valve on the branch of the electrolytic tank module is closed, and then the first valve of the other electrolytic tank module is opened, so that the rapid switching sampling can be realized, and the sampling efficiency is higher.
In some embodiments, the pure water module comprises a constant temperature water tank and a water pump, the constant temperature water tank is used for providing pure water, a water outlet of the constant temperature water tank is communicated with an inlet of the water pump, an outlet of the water pump is communicated with a pure water inlet of the PEM electrolytic tank, and an anode outlet of the PEM electrolytic tank is communicated with a circulating water inlet of the constant temperature water tank; the constant temperature water tank is internally provided with a first heating component which is used for heating water in the constant temperature water tank.
In the technical scheme, the constant-temperature water tank is filled with pure water, so that pure water is provided for the PEM electrolytic tank, the water pump pumps water from the constant-temperature water tank, and water discharged by the water pump enters the PEM electrolytic tank for electrolysis. By providing the first heating element in the constant temperature water tank, the heating element can heat and control the temperature of the water in the constant temperature water tank when the PEM electrolytic tank testing device is used in a low temperature environment, so that the pure water in the constant temperature water tank is in a constant temperature state.
In some embodiments, a second heating element, a cooling assembly, a first temperature sensor, and a second valve are disposed in sequence between the water outlet of the water pump and the pure water inlet of each PEM electrolyzer.
According to the technical scheme, under the action of the first heating component, water of the constant-temperature water tank can be heated, the second heating component, the cooling component and the first temperature sensor are further arranged at the water outlet of the water pump and the pure water inlet of each PEM electrolytic tank, the water is conveyed from the constant-temperature water tank to the water supply branch of each electrolytic tank module, the second heating component of each branch and the corresponding cooling component are matched, the feedback signal of the first temperature sensor is matched, the water temperature of each branch is controlled independently and does not interfere with each other, different test working conditions can be achieved for each electrolytic tank module, the overall heating efficiency is guaranteed, and the test requirements of the same device on different working conditions are met.
In some embodiments, a deionization module is disposed between the water outlet of the water pump and the circulating water inlet of the thermostatic water tank.
In the technical scheme, as the PEM electrolytic tank has certain requirements on water quality, the deionized module is connected in parallel on the water supply pipeline of pure water, when the water quality exceeds a threshold value, the deionized module is utilized to purify the water quality of the pure water, so that the water quality of pure water supply can be ensured, and the normal operation of the PEM electrolytic tank is ensured.
In some embodiments, the hydrogen treatment module includes a first water separator in communication with the cathode outlet of the PEM electrolyzer, a first drying tank in communication with the air outlet of the first water separator, an air outlet of the first drying tank in communication with the hydrogen flow meter, and a hydrogen flow component capable of communicating with the hydrogen analysis module.
According to the technical scheme, under the cooperation of the first water separator and the first drying tank, the first water separator condenses and separates water vapor contained in the hydrogen, and then the gas also has part of residual water vapor to pass through the first drying tank so as to remove the water vapor contained in the gas, thereby being beneficial to ensuring the test accuracy of oxygen in the subsequent hydrogen, and the hydrogen flowmeter can play a role in metering the gas.
In some embodiments, a nitrogen purge line is also in communication between the cathode outlet of the PEM electrolyzer and the first water separator.
In the technical scheme, the nitrogen purging pipeline is connected to the cathode outlet of the PEM electrolytic tank, so that the hydrogen is replaced by nitrogen under emergency stop or special conditions, and the safety of the device is ensured.
In some embodiments, the PEM electrolyzer test device further comprises an oxygen treatment module in communication with the oxygen outlet port of the pure water module, the oxygen treatment module for removing water from the gas exhausted from the oxygen outlet port; the oxygen treatment module comprises a second water separator and a second drying tank, the second water separator is communicated with the oxygen outlet, the second drying tank is communicated with the air outlet of the second water separator, and the air outlet of the second drying tank is communicated with the oxygen analysis module.
According to the technical scheme, under the cooperation of the second water separator and the second drying tank, the second water separator condenses and separates water vapor contained in oxygen, then the gas and part of residual water vapor pass through the second drying tank, the water vapor contained in the gas is removed, and then the content of hydrogen in the oxygen is analyzed through the oxygen analysis module.
In some embodiments, the drain port of the second water separator communicates with the pure water module.
In the technical scheme, the water outlet of the second water separator is communicated with the pure water module, so that water separated by the second water separator can be recycled, and water resource waste is avoided.
In some embodiments, a second temperature sensor is disposed between the anode outlet of the PEM electrolyzer and the circulating water inlet of the pure water module.
Additional features and advantages of the application will be set forth in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a process flow diagram of a PEM electrolyzer testing apparatus provided in accordance with some embodiments of the present application;
FIG. 2 is a system block diagram of a PEM electrolyzer testing apparatus provided in accordance with some embodiments of the present application.
Icon: 10-an electrolysis power supply; 11-PEM electrolyzer; 20-a constant temperature water tank; 21-a water pump; 22-a second heating element; 23-a cooling assembly; 24-a water flow meter; 25-a first temperature sensor; 26-a second valve; 27-a second temperature sensor; 30-conductivity meter; 31-deionizer; 32-a filter; 33-a third valve; 40-a first water separator; 41-a first drying tank; 42-hydrogen flow meter; 43-first valve; 44-fourth valve; 45-a hydrogen analysis module; 50-a second water separator; 51-a second drying tank; 52-an oxygen analysis module; 60-fifth valve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is conventionally put in use of the product of this application, merely for convenience in describing the present application and simplifying the description, and is not indicative or implying that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Examples
Referring to fig. 1 and 2, the PEM electrolyzer testing device includes a PEM electrolyzer module, a pure water module and a hydrogen treatment module, the electrolyzer module includes an electrolysis power supply 10 and a PEM electrolyzer 11, the electrolysis power supply 10 is used for supplying power to the PEM electrolyzer 11; the pure water module is used for providing pure water for the PEM electrolytic tank 11, and an anode outlet of the PEM electrolytic tank 11 is communicated with a circulating water inlet of the pure water module; the hydrogen treatment module is communicated with a cathode outlet of the PEM electrolytic tank 11 and is used for removing water in gas discharged from the cathode outlet; the number of the electrolytic tank modules is set to be multiple, the number of the hydrogen treatment modules corresponds to the number of the electrolytic tank modules one by one, branches of air outlets of the hydrogen treatment modules are connected to the hydrogen analysis modules 45 together, and first valves 43 are arranged on branches between the air outlets of the hydrogen treatment modules and the hydrogen analysis modules 45.
In this scheme, electrolysis power supply 10 supplies power to PEM electrolysis cell 11, and pure water module provides pure water for PEM electrolysis cell 11. When PEM electrolysis cell 11 is electrolyzed, the anode outlet of PEM electrolysis cell 11 is rich in a large amount of oxygen, mixed in water, and then together refluxed to thermostatic water tank 20. The hydrogen produced at the cathode outlet of the PEM electrolyzer 11 contains a large amount of water vapor and a small amount of oxygen, the oxygen content of the hydrogen being an important indicator for detecting the performance of the PEM electrolyzer 11, and the hydrogen analysis module 45 being unable to present water under operating conditions. The water vapor contained in the gas can be removed through the hydrogen treatment module, then the gas flows to the hydrogen analysis module 45, and the oxygen content in the hydrogen is measured through the hydrogen analysis module 45. The quantity of the electrolysis trough module in this scheme is established to a plurality ofly, and this hydrogen analysis module 45 is connected jointly to a plurality of electrolysis trough modules, adopts the gas analysis mode that the multi-branch road sample was collected to the main road promptly, need not all set up hydrogen analysis module 45 at every branch road, only need set up a set of hydrogen analysis module 45, has saved sensor arrangement space and cost, and the result deviation that leads to because of sensor self difference has been discharged, has improved the accuracy of test result. And the branch lines between the air outlets of the hydrogen treatment modules and the hydrogen analysis modules 45 are respectively provided with a first valve 43, and the first valves 43 can control the on-off of the branch lines corresponding to the electrolytic tank modules and the hydrogen analysis modules 45 so as to realize the respective sampling analysis of multiple branch lines.
It should be noted that, in the gas analysis mode in which the multiple branches sample and collect in the main path, specifically, the hydrogen in the multiple branches can be sampled by the hydrogen analysis module 45, but not simultaneously. That is, the hydrogen analysis module 45 does not sample both cell modules simultaneously for analysis, staggered in time, to achieve separate sample analysis.
The hydrogen analysis module 45 may be a hydrogen-in-oxygen sensor, and the number of the electrolyzer modules may be two, three, four, or the like, and may be specifically set according to practical situations. In this embodiment, as shown in fig. 1, the number of the electrolytic tank modules is two.
In some embodiments, the outlet of each hydrogen treatment module is connected to a tail pipe, and the inlet of the tail pipe is located between the outlet of each hydrogen treatment module and the first valve 43. The tail pipeline is connected with the gas outlets of the hydrogen treatment modules, so that the plurality of electrolytic tank modules can carry out electrolytic work at the same time, and each electrolytic tank module can be independently provided with different test working conditions without mutual influence. When the hydrogen of one of the electrolyzer modules is sampled and analyzed, the first valves 43 on the branches of the rest electrolyzer modules are closed, so that the hydrogen of the rest electrolyzer modules is discharged outside through the tail drain. After the sampling analysis of one of the electrolytic tank modules is completed, the first valve 43 on the branch of the electrolytic tank module is closed, and then the first valve 43 of the other electrolytic tank module is opened, so that the rapid switching sampling can be realized, and the sampling efficiency is higher.
In some embodiments, the pure water module comprises a constant temperature water tank 20 and a water pump 21, the constant temperature water tank 20 is used for providing pure water, the water outlet of the constant temperature water tank 20 is communicated with the inlet of the water pump 21, the outlet of the water pump 21 is communicated with the pure water inlet of the PEM electrolytic tank 11, and the anode outlet of the PEM electrolytic tank 11 is communicated with the circulating water inlet of the constant temperature water tank 20; a first heating part (not shown) for heating the water in the constant temperature water tank 20 is provided in the constant temperature water tank 20. The constant temperature water tank 20 is filled with pure water, so that pure water is provided for the PEM electrolytic tank 11, the water pump 21 pumps water from the constant temperature water tank 20, and water discharged from the water pump 21 enters the PEM electrolytic tank 11 for electrolysis. By providing the first heating element in the thermostatic water tank 20, the heating element can heat and control the temperature of the water in the thermostatic water tank 20 when the PEM electrolyzer test device is used in a low temperature environment, so that the pure water in the thermostatic water tank 20 is in a thermostatic state.
Wherein the temperature of the pure water in the constant temperature water tank 20 can be set according to the actual situation, in the present embodiment, the temperature of the pure water in the constant temperature water tank 20 is maintained at 40 ℃.
In some embodiments, a second heating element 22, a cooling assembly 23, a first temperature sensor 25 and a second valve 26 are disposed in sequence between the water outlet of the water pump 21 and the pure water inlet of each PEM electrolyzer 11. Under the action of the first heating component, the water in the constant-temperature water tank 20 can be heated, the water outlet of the water pump 21 and the pure water inlet of each PEM electrolytic tank 11 are further provided with a second heating component 22, a cooling component 23 and a first temperature sensor 25, the water is conveyed from the constant-temperature water tank 20 to the water supply branch of each electrolytic tank module, the second heating component 22 of each branch and the corresponding cooling component 23 are matched to work, the water is cooperated with the feedback signal of the first temperature sensor 25, the water temperature of each branch is independently controlled and does not interfere with each other, the electrolytic tank modules can reach different test working conditions, the overall heating efficiency is ensured, and the test requirements of different working conditions of the same device are met.
The first heating member and the second heating member 22 may be heaters in the prior art, and specific structures thereof will not be described herein. A water flow meter 24 may also be provided between the second heating element 22 and the pure water inlet of the PEM electrolyzer 11 to record the water supply to each PEM electrolyzer.
In some embodiments, a deionization module is provided between the water outlet of the water pump 21 and the circulating water inlet of the constant temperature water tank 20. Because the PEM electrolytic tank 11 has certain requirements on water quality, the deionized module is connected in parallel on the water supply pipeline of the pure water, when the water quality of the pure water exceeds a threshold value, the deionized module is utilized to purify the water quality of the pure water, so that the water quality of pure water supply can be ensured, and the normal operation of the PEM electrolytic tank 11 is ensured.
The deionization module comprises a deionization device 31, a filter 32 and a third valve 33, the conductivity meter 30 is arranged on the water outlet pipeline of the water pump 21, the deionization module is opened by adding the deionization device 31 and the conductivity meter 30 in a linkage mode, when the conductivity meter 30 exceeds a threshold value, the third valve 33 is opened to purify water, and after the water outlet of the water pump 21 is treated by the deionization device 31 and the filter 32, the conductivity is reduced to a target value, so that the water quality requirement of the PEM electrolytic tank 11 is met.
In some embodiments, the hydrogen treatment module includes a first water separator 40, a first desiccant tank 41, and a hydrogen flow meter 42, the first water separator 40 being in communication with the cathode outlet of the PEM electrolyzer 11, the first desiccant tank 41 being in communication with the air outlet of the first water separator 40, the air outlet of the first desiccant tank 41 being in communication with the hydrogen flow meter 42, the hydrogen flow component being capable of communicating with the hydrogen analysis module 45. Under the cooperation of the first water separator 40 and the first drying tank 41, the first water separator 40 condenses and separates water vapor contained in the hydrogen, and then part of residual water vapor in the gas passes through the first drying tank 41 to remove the water vapor contained in the gas, so that the testing accuracy of oxygen in the subsequent hydrogen is guaranteed, and the hydrogen flowmeter 42 can play a role in metering the gas.
Wherein, a fourth valve 44 is also arranged between the air outlet of the first drying tank 41 and the tail exhaust pipeline.
In some embodiments, a nitrogen purge line is also in communication between the cathode outlet of the PEM electrolyzer 11 and the first water separator 40. The cathode outlet of the PEM electrolytic tank 11 is connected with a nitrogen purging pipeline, so that the hydrogen is replaced by nitrogen in emergency stop or special conditions, and the safety of the device is ensured.
Wherein the nitrogen purge line comprises a nitrogen supply and a plurality of fifth valves 60, the fifth valves 60 being disposed on the lines of the nitrogen supply and the cathode outlets of the respective PEM electrolysers 11. The opening and closing of the fifth valve 60 is controlled to realize the opening and closing control of the pipeline nitrogen purging of the cathode outlet of the PEM electrolytic tank 11.
In some embodiments, the PEM electrolyzer test device further comprises an oxygen treatment module in communication with the oxygen outlet port of the pure water module, the oxygen treatment module for removing water from the gas exhausted from the oxygen outlet port; the oxygen treatment module comprises a second water separator 50 and a second drying tank 51, wherein the second water separator 50 is communicated with an oxygen outlet of the constant temperature water tank 20, the second drying tank 51 is communicated with an air outlet of the second water separator 50, and an oxygen analysis module 52 is communicated with an air outlet of the second drying tank 51. Under the cooperation of the second water separator 50 and the second drying tank 51, the second water separator 50 condenses and separates water vapor contained in oxygen, then part of residual water vapor in the gas passes through the second drying tank 51, the water vapor contained in the gas is removed, and then the content of hydrogen in the oxygen is analyzed through the oxygen analysis module 52.
Wherein the oxygen analysis module 52 may be a hydrogen-in-oxygen sensor.
In some embodiments, the drain port of the second water separator 50 communicates with the constant temperature water tank 20 in the pure water module. The water outlet of the second water separator 50 is communicated with the pure water module, so that the water separated by the second water separator 50 can be recycled, and the waste of water resources is avoided.
In some embodiments, a second temperature sensor 27 is provided between the anode outlet of the PEM electrolyzer 11 and the circulating water inlet of the pure water module.
Of course, the PEM electrolyzer testing device also comprises a controller, the controller can be electrically connected with the sensors and the electromagnetic valves in the PEM electrolyzer testing device so as to realize automatic control, and the controller can be an upper computer.
It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A PEM electrolyzer test device comprising:
an electrolyzer module comprising an electrolysis power supply and a PEM electrolyzer, the electrolysis power supply for powering the PEM electrolyzer;
a pure water module for providing pure water to the PEM electrolyzer, the anode outlet of the PEM electrolyzer being in communication with the circulating water inlet of the pure water module;
A hydrogen treatment module communicated with a cathode outlet of the PEM electrolyzer, the hydrogen treatment module being used for removing water in the gas discharged from the cathode outlet;
The number of the electrolytic tank modules is set to be multiple, the number of the hydrogen treatment modules corresponds to the number of the electrolytic tank modules one by one, the branches of the air outlets of the hydrogen treatment modules are connected to the hydrogen analysis modules together, and first valves are arranged on the branches between the air outlets of the hydrogen treatment modules and the hydrogen analysis modules.
2. The PEM electrolyzer test device of claim 1 wherein the outlet port of each of said hydrogen treatment modules is connected to a tail line, the inlet port of said tail line being located between the outlet port of each of said hydrogen treatment modules and said first valve.
3. The PEM electrolyzer test device of claim 1 wherein said purified water module comprises a thermostatic water tank for providing purified water and a water pump, the outlet of said thermostatic water tank being in communication with the inlet of said water pump, the outlet of said water pump being in communication with the purified water inlet of said PEM electrolyzer, the anode outlet of said PEM electrolyzer being in communication with the circulating water inlet of said thermostatic water tank; the constant temperature water tank is internally provided with a first heating component which is used for heating water in the constant temperature water tank.
4. The PEM electrolyzer test device of claim 3 wherein a second heating element, a cooling assembly, a first temperature sensor and a second valve are sequentially disposed between the water outlet of said water pump and the pure water inlet of each of said PEM electrolyzers.
5. A PEM electrolyzer test unit of claim 3 wherein a deionization module is disposed between the water outlet of said water pump and the circulating water inlet of said thermostatic water tank.
6. The PEM electrolyzer test device of claim 1 wherein said hydrogen treatment module comprises a first water separator, a first desiccant tank and a hydrogen flow meter, said first water separator being in communication with the cathode outlet of said PEM electrolyzer, said first desiccant tank being in communication with the air outlet of said first water separator, the air outlet of said first desiccant tank being in communication with said hydrogen flow meter, said hydrogen flow component being capable of communicating with said hydrogen analysis module.
7. The PEM electrolyzer test device of claim 6 wherein a nitrogen purge line is also in communication between the cathode outlet of said PEM electrolyzer and said first water separator.
8. The PEM electrolyzer test device of claim 1 wherein said PEM electrolyzer test device further comprises:
The oxygen treatment module is communicated with the oxygen outlet of the pure water module and is used for removing water in the gas discharged by the oxygen outlet; the oxygen treatment module comprises a second water separator and a second drying tank, the second water separator is communicated with the oxygen outlet, the second drying tank is communicated with an air outlet of the second water separator, and an oxygen analysis module is communicated with an air outlet of the second drying tank.
9. The PEM electrolyzer test device of claim 8 wherein the drain port of said second water separator communicates with said purified water module.
10. The PEM electrolyzer test device of claim 1 wherein a second temperature sensor is disposed between the anode outlet of said PEM electrolyzer and the circulating water inlet of said pure water module.
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| CN119125287A (en) * | 2024-11-14 | 2024-12-13 | 大连氢新未来能源科技有限公司 | A PEM membrane electrode testing system capable of online purification and conductivity monitoring |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119125287A (en) * | 2024-11-14 | 2024-12-13 | 大连氢新未来能源科技有限公司 | A PEM membrane electrode testing system capable of online purification and conductivity monitoring |
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