CN115900823A - Program protection system based on PEM electrolytic stack test platform - Google Patents
Program protection system based on PEM electrolytic stack test platform Download PDFInfo
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- CN115900823A CN115900823A CN202211498882.XA CN202211498882A CN115900823A CN 115900823 A CN115900823 A CN 115900823A CN 202211498882 A CN202211498882 A CN 202211498882A CN 115900823 A CN115900823 A CN 115900823A
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- pem
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- electrolytic stack
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- 238000012360 testing method Methods 0.000 title claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000001257 hydrogen Substances 0.000 claims abstract description 33
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 33
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 3
- 238000005868 electrolysis reaction Methods 0.000 claims description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 150000002431 hydrogen Chemical class 0.000 abstract description 4
- 239000003792 electrolyte Substances 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to the technical field of PEM electrolytic stack testing, and discloses a program protection system with higher reliability based on a PEM electrolytic stack testing platform, which comprises the following steps: s101, setting a temperature preset value of pure water introduced into a PEM (proton exchange membrane) electrolytic stack, S102, setting a temperature preset value of the pure water discharged after the PEM electrolytic stack is electrolyzed, and if the temperature value of the discharged pure water is higher than or lower than the temperature preset value, S103, setting a surface temperature preset value when the PEM electrolytic stack works, and if the surface temperature value when the PEM electrolytic stack works is higher than the surface temperature preset value, a program protection system closes a power supply of the PEM electrolytic stack according to a comparison result; s104, setting a dew point preset value of hydrogen separated out from the PEM electrolytic stack, and if the dew point value of the hydrogen is higher than the dew point preset value, closing a power supply of the PEM electrolytic stack by the program protection system according to a comparison result.
Description
Technical Field
The invention relates to the technical field of PEM electrolytic stack testing, in particular to a program protection system based on a PEM electrolytic stack testing platform.
Background
At present, before a real test, a PEM electrolytic stack or a PEM test platform lacks a corresponding PEM electrolytic stack or test platform test means, so that before the real test, various data of the performance of the PEM electrolytic stack or the PEM test platform cannot be acquired, and meanwhile, a reliable test data basis cannot be provided for the real test.
However, when the PEM electrolytic stack or the test platform is not actually tested through the simulation test platform, various adverse conditions may be caused during later product operation, and meanwhile, the measures for solving the possible technical problems (such as ultrahigh water temperature, ultrahigh surface temperature or ultrahigh hydrogen discharge pressure) in the actual test cannot be timely taken, so that the operation reliability of the PEM electrolytic stack is reduced.
Therefore, how to improve the reliability of the test platform testing PEM electrolytic stack becomes a technical problem which needs to be solved by the technical personnel in the field.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a program protection system based on a PEM electrolytic stack test platform with higher reliability, aiming at the defects that various adverse conditions may be caused when the PEM electrolytic stack or the test platform is not subjected to a real test by a simulation test platform in the prior art, and the possible technical problems cannot be solved in the real test in time, so that the defect of the running reliability of the PEM electrolytic stack is reduced.
The technical scheme adopted by the invention for solving the technical problem is as follows: a program protection system based on a PEM electrolytic stack test platform is constructed, and the method comprises the following steps:
s101, setting a temperature preset value of pure water introduced into a PEM (proton exchange membrane) electrolytic stack, and if the temperature value of the introduced pure water is higher than or lower than the temperature preset value, closing a power supply of the PEM electrolytic stack by a program protection system according to a comparison result;
s102, setting a preset value of the temperature of pure water discharged from the PEM electrolytic stack after electrolysis, and if the temperature value of the discharged pure water is higher or lower than the preset value of the temperature, turning off the power supply of the PEM electrolytic stack by the program protection system according to the comparison result;
s103, setting a preset surface temperature value when the PEM electrolytic stack works, and if the surface temperature value when the PEM electrolytic stack works is higher than the preset surface temperature value, the program protection system closes a power supply of the PEM electrolytic stack according to a comparison result;
s104, setting a dew point preset value of hydrogen separated out from the PEM electrolytic stack, and if the dew point value of the hydrogen is higher than the dew point preset value, the program protection system closes the power supply of the PEM electrolytic stack according to the comparison result.
In some embodiments, in step S101, the preset value of the temperature of pure water introduced into the PEM electrolyte stack is selected to be 55 ℃ to 60 ℃.
In some embodiments, in step S102, the pre-set pure water temperature after exiting the PEM electrolysis stack is selected to be 63 ℃ to 66 ℃.
In some embodiments, in step S103, the preset surface temperature value of the PEM electrolyte stack during operation is selected to be 63 ℃ to 66 ℃.
In some embodiments, in step S104, the dew point preset value of the PEM electrolysis stack for evolving the hydrogen gas is selected to be-43 ℃ to-47 ℃.
In some embodiments, in step S104, a preset pressure value of hydrogen evolved by the PEM electrolytic stack is set, and if the pressure of the output hydrogen is higher than the preset pressure value, the program protection system turns off the power supply of the PEM electrolytic stack according to the comparison result, and correspondingly turns on an exhaust valve of the water-vapor separator to release the pressure.
In some embodiments, in step S104, the preset value of the pressure of the hydrogen evolved by the PEM electrolytic stack is selected to be 33bar to 36bar.
In some embodiments, in step S104, a preset concentration value of oxygen in hydrogen evolved by the PEM electrolytic stack is set, and if the oxygen content in the hydrogen output is greater than the preset concentration value, the program protection system turns off the power supply of the PEM electrolytic stack according to the comparison result.
In some embodiments, in step S104, the preset concentration value of oxygen in the hydrogen evolved by the PEM electrolysis stack is selected to be 18ppm to 22ppm.
In the program protection system based on the PEM electrolytic stack test platform, at least a pure water temperature preset value introduced into the PEM electrolytic stack, a pure water temperature preset value discharged after the PEM electrolytic stack is electrolyzed, a surface temperature preset value when the PEM electrolytic stack works and a dew point preset value of hydrogen precipitated from the PEM electrolytic stack are set in the program protection system, data information formed by all nodes when the PEM electrolytic stack test platform works is fed back to the program protection system by a sensor, the program protection system respectively compares the fed-back data information with the preset values, and when the data information in all the processes is higher than or lower than the preset values, the program protection system closes the power supply of the PEM electrolytic stack according to the comparison result. Compared with the prior art, the PEM electrolytic stack is operated through the test platform, a simulation test platform is further obtained to carry out a real test, data signals of corresponding nodes or working conditions are collected, and measures for solving the technical problems (such as ultrahigh water temperature, ultrahigh surface temperature or ultrahigh hydrogen output pressure) possibly occurring in the later actual operation of the PEM electrolytic stack can be provided according to the data parameters obtained when the PEM electrolytic stack is operated through the test platform during the later product operation, so that the operation reliability of the PEM electrolytic stack and the safety of operators are further improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a flow chart of steps in an embodiment of the present invention providing a program protection system based on a PEM electrolytic stack test platform;
FIG. 2 is a schematic diagram of a closed loop control system of an embodiment of the present invention for providing a PEM-based electrolytic stack test platform based program protection system.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1-2, in a first embodiment of the program protection system based on a PEM electrolytic stack test platform of the present invention, the program protection system based on a PEM electrolytic stack test platform comprises the following steps:
before the test platform is operated, firstly testing whether the emergency stop button functions normally or not, and checking the reliability of the emergency stop button on the closing of the test platform; and
and setting a preset flow value of the introduced cooling water in the program protection system, detecting the flow value of the cooling water by a flowmeter when the preset flow value is less than 0.05Mpa, feeding back the obtained flow value to the program protection system, comparing the flow value with the preset value, and outputting an alarm or turning off a power supply of the PEM electrolytic stack according to the comparison result.
Specifically, S101, setting a temperature preset value of pure water introduced into the PEM electrolytic stack, and if the temperature value of the introduced pure water is higher than or lower than the temperature preset value, closing the power supply of the PEM electrolytic stack by the program protection system according to the comparison result.
S102, setting a pure water temperature preset value after electrolysis of the PEM electrolysis stack, and if the temperature value of the discharged pure water is higher or lower than the temperature preset value, turning off a power supply of the PEM electrolysis stack by a program protection system according to a comparison result.
S103, setting a surface temperature preset value when the PEM electrolytic stack works, and if the surface temperature value when the PEM electrolytic stack works is higher than the surface temperature preset value, closing a power supply of the PEM electrolytic stack by the program protection system according to a comparison result;
s104, setting a dew point preset value of hydrogen separated out from the PEM electrolytic stack, and if the dew point value of the hydrogen is higher than the dew point preset value, closing a power supply of the PEM electrolytic stack by the program protection system according to a comparison result.
It should be noted that a water temperature sensor, a water flow sensor, a water pressure sensor, a temperature sensor, a dew point analyzer, a hydrogen content analyzer, and an oxygen content analyzer are respectively arranged in the test platform.
The sensors or the analyzers respectively acquire data parameters of corresponding nodes and feed the acquired data parameters back to the program protection system, and the program protection system respectively compares the fed data parameters with preset values and then makes corresponding actions (turning off a power supply of the PEM electrolytic stack or turning on a pressure relief device) according to comparison results.
By using the technical scheme, the PEM electrolytic stack is operated through the test platform, so that a real test of the simulation test platform is obtained, data signals of corresponding nodes or working conditions are collected, and measures for solving the technical problems (such as ultrahigh water temperature, ultrahigh surface temperature or ultrahigh hydrogen output pressure) possibly occurring in the later actual operation of the PEM electrolytic stack can be provided according to the data parameters obtained when the PEM electrolytic stack is operated through the test platform during the later product operation, so that the operation reliability of the PEM electrolytic stack and the safety of operators are improved.
In some embodiments, in order to improve the reliability of the operation of the PEM electrolytic stack, in step S101, the preset value of the temperature of pure water introduced into the PEM electrolytic stack is selected to be 55 ℃ to 60 ℃.
Namely, when the temperature of pure water introduced into the PEM electrolytic stack is more than 55-60 ℃, the program protection system shuts down the power supply of the PEM electrolytic stack according to the comparison result of the temperature of the pure water and the preset value of the temperature of the pure water.
In some embodiments, to improve the reliability of the operation of the PEM electrolysis stack, the post-electrolysis pure water temperature preset value of the discharged PEM electrolysis stack is selected to be 63 ℃ to 66 ℃ in step S102.
Namely, when the temperature of the pure water after the electrolysis of the discharged PEM electrolysis stack is higher than 63 ℃ to 66 ℃, the program protection system shuts down the power supply of the PEM electrolysis stack according to the comparison result of the temperature of the pure water after the electrolysis and the preset temperature value.
In some embodiments, to improve the reliability of the operation of the PEM electrolysis stack, in step S102, a preset value of the flow rate of inlet water to the PEM electrolysis stack (set to be the inlet water flow rate) is set<1m 3 H), if the water inlet flow value of the PEM electrolysis stack is lower than a preset value, the power supply of the PEM electrolysis stack is turned off by the program protection system according to the comparison result.
In some embodiments, in order to improve the reliability of the operation of the PEM electrolyte stack, in step S102, a preset value (set to be <0.03 Mpa) of the water inlet pressure to the PEM electrolyte stack is set, and if the value of the water inlet pressure to the PEM electrolyte stack is lower than the preset value, the program protection system turns off the power supply of the PEM electrolyte stack according to the comparison result.
In some embodiments, in order to increase the reliability of the operation of the PEM electrolysis stack, in step S103, the surface temperature preset value during the operation of the PEM electrolysis stack is selected to be 63 ℃ to 66 ℃.
Namely, when the surface temperature of the PEM electrolytic stack is higher than 63-66 ℃, the program protection system turns off the power supply of the PEM electrolytic stack according to the comparison result of the surface temperature of the PEM electrolytic stack during operation and a preset value.
In some embodiments, in order to improve the reliability of the operation of the PEM electrolysis stack, in step S104, the dew point preset value of the evolved hydrogen of the PEM electrolysis stack is selected to be-43 ℃ to-47 ℃.
Namely, when the dew point value of the hydrogen output when the PEM electrolytic stack works is larger than minus 43 ℃ to minus 47 ℃, the program protection system turns off the power supply of the PEM electrolytic stack according to the comparison result of the dew point value of the hydrogen when the PEM electrolytic stack works and a preset value.
In some embodiments, in step S104, a preset pressure value of hydrogen evolved by the PEM electrolytic stack is set, and if the pressure of the output hydrogen is higher than the preset pressure value, the program protection system turns off the power supply of the PEM electrolytic stack according to the comparison result, and correspondingly turns on an exhaust valve of the water-vapor separator to release the pressure.
In step S104, the preset pressure value of the hydrogen evolved by the PEM electrolytic stack is selected to be 33bar-36bar.
In some embodiments, in step S104, a preset concentration value of oxygen in hydrogen evolved by the PEM electrolysis stack is set, and if the oxygen content in the output hydrogen is greater than the preset concentration value, the program protection system turns off the power supply of the PEM electrolysis stack according to the comparison result.
In step S104, a preset concentration value of oxygen in the hydrogen evolved by the PEM electrolytic stack is selected to be 18ppm to 22ppm.
While the present invention has been described with reference to the particular illustrative embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and equivalents thereof, which may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A program protection system based on a PEM electrolytic stack test platform is characterized by comprising the following steps:
s101, setting a temperature preset value of pure water introduced into a PEM (proton exchange membrane) electrolytic stack, and if the temperature value of the introduced pure water is higher than or lower than the temperature preset value, closing a power supply of the PEM electrolytic stack by a program protection system according to a comparison result;
s102, setting a preset value of the temperature of pure water discharged from the PEM electrolytic stack after electrolysis, and if the temperature value of the discharged pure water is higher or lower than the preset value of the temperature, turning off the power supply of the PEM electrolytic stack by the program protection system according to the comparison result;
s103, setting a preset surface temperature value when the PEM electrolytic stack works, and if the surface temperature value when the PEM electrolytic stack works is higher than the preset surface temperature value, the program protection system closes a power supply of the PEM electrolytic stack according to a comparison result;
s104, setting a dew point preset value of the hydrogen precipitated from the PEM electrolytic stack, and if the dew point value of the hydrogen is higher than the dew point preset value, turning off a power supply of the PEM electrolytic stack by the program protection system according to a comparison result.
2. The PEM electrolysis stack test platform based program protection system according to claim 1,
in step S101, the preset value of the temperature of pure water introduced into the PEM electrolytic stack is selected to be 55 ℃ to 60 ℃.
3. The PEM electrolysis stack test platform based program protection system according to claim 1,
in step S102, the preset value of the pure water temperature after the PEM electrolytic stack is discharged for electrolysis is selected to be 63 ℃ to 66 ℃.
4. The PEM electrolysis stack test platform based program protection system according to claim 1,
in step S103, the surface temperature preset value of the PEM electrolytic stack during operation is selected to be 63 ℃ to 66 ℃.
5. The PEM electrolysis stack test platform based program protection system according to claim 1,
in step S104, the preset dew point value of the hydrogen gas evolved by the PEM electrolytic stack is selected to be-43 ℃ to-47 ℃.
6. The PEM electrolysis stack test platform based program protection system according to claim 5,
in step S104, a preset pressure value of hydrogen evolved by the PEM electrolytic stack is set, and if the pressure of the output hydrogen is higher than the preset pressure value, the program protection system turns off the power supply of the PEM electrolytic stack according to the comparison result, and correspondingly turns on an evacuation valve of the water-vapor separator to release the pressure.
7. The PEM electrolysis stack test platform based program protection system according to claim 6,
in step S104, the preset pressure value for the hydrogen evolved by the PEM electrolytic stack is selected to be 33bar-36bar.
8. The PEM electrolysis stack test platform based program protection system according to claim 5,
in step S104, a preset concentration value of oxygen in hydrogen evolved by the PEM electrolytic stack is set, and if the oxygen content in the hydrogen gas is output to be greater than the preset concentration value, the program protection system turns off the power supply of the PEM electrolytic stack according to the comparison result.
9. The PEM electrolysis stack test platform based program protection system according to claim 8,
in step S104, a preset concentration value of oxygen in the hydrogen evolved by the PEM electrolytic stack is selected to be 18ppm to 22ppm.
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| CN202211498882.XA CN115900823A (en) | 2022-11-28 | 2022-11-28 | Program protection system based on PEM electrolytic stack test platform |
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| CN202211498882.XA CN115900823A (en) | 2022-11-28 | 2022-11-28 | Program protection system based on PEM electrolytic stack test platform |
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