CN117187877A - Self-checking operation control system of PEM electrolytic hydrogen production device - Google Patents
Self-checking operation control system of PEM electrolytic hydrogen production device Download PDFInfo
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- CN117187877A CN117187877A CN202310289761.2A CN202310289761A CN117187877A CN 117187877 A CN117187877 A CN 117187877A CN 202310289761 A CN202310289761 A CN 202310289761A CN 117187877 A CN117187877 A CN 117187877A
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- water
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- hydrogen
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 84
- 239000001257 hydrogen Substances 0.000 title claims abstract description 84
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 157
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000012080 ambient air Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 10
- 230000001502 supplementing effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to the technical field of PEM electrolytic hydrogen production, and discloses a self-checking operation control system of a PEM electrolytic hydrogen production device with higher reliability, which comprises the following steps: s101, detecting a temperature value of water circulation in a pipeline, and when the temperature value of circulating water is higher than or lower than a water temperature preset value, prohibiting starting of the hydrogen production device by a control system; s102, detecting the water level state of the water tank, and when the water level of the water tank is lower than a preset liquid level value, controlling the water replenishing valve to be opened by the control system to replenish water; s103, detecting a hydrogen concentration value in ambient air, and when the hydrogen concentration value is higher than a hydrogen concentration preset value, prohibiting starting of the hydrogen production device by the control system; and S104, detecting the pressure value of the hydrogen system, and controlling the hydrogen production device to be prohibited to start by the control system and performing pressure relief control when the pressure value is higher than a pressure preset value.
Description
Technical Field
The invention relates to the technical field of PEM electrolytic hydrogen production, in particular to a self-checking operation control system of a PEM electrolytic hydrogen production device.
Background
PEM electrolytic hydrogen production is a relatively common hydrogen production device in industrial electrolysis facilities. At present, when the PEM electrolytic stack is controlled by a self-checking operation control system to carry out electrolytic hydrogen production, the water circulation temperature of equipment, the water level of an equipment water tank, the hydrogen concentration in the ambient air and the pressure of a hydrogen system of the equipment are unknown when the PEM electrolytic hydrogen production system is just started.
On the one hand, when the water circulation temperature is lower than 2-5 ℃, the pipeline can be frozen and blocked, and the water loop can not be circulated to damage the water pump or the electrolytic tank;
on the other hand, when the water level of the water tank is lower than 30%, dry heating of the water tank heater, idling of the water pump and insufficient water flow in the electrolytic tank can be caused, so that the key elements are damaged;
therefore, how to improve the reliability of the operation of the self-checking operation control system is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims at solving the technical problems that when the water circulation temperature is lower than 2-5 ℃ in the prior art, a pipeline can be frozen and blocked, and a water pump or an electrolytic tank cannot be damaged by the water loop in a circulating way; when the water level of the water tank is lower than 30%, the defects of dry heating of the water tank heater, idling of the water pump and insufficient water flow in the electrolytic tank, which lead to damage of key elements, are possibly caused, and the self-checking operation control system of the PEM electrolytic hydrogen production device with higher reliability is provided.
The technical scheme adopted for solving the technical problems is as follows: a self-checking operation control system of a PEM electrolytic hydrogen production device is constructed, which comprises the following steps:
s101, detecting a temperature value of water circulation in a pipeline, and when the temperature value of circulating water is higher than or lower than a water temperature preset value, prohibiting starting of the hydrogen production device by a control system;
s102, detecting the water level state of the water tank, and when the water level of the water tank is lower than a preset liquid level value, controlling the water replenishing valve to be opened by the control system to replenish water;
s103, detecting a hydrogen concentration value in ambient air, and when the hydrogen concentration value is higher than a hydrogen concentration preset value, prohibiting starting of the hydrogen production device by the control system;
and S104, detecting the pressure value of the hydrogen system, and controlling the hydrogen production device to be prohibited to start by the control system and performing pressure relief control when the pressure value is higher than a pressure preset value.
In some embodiments, in the step S101, the range of the water temperature preset value is set to be lower than 5 ℃ or higher than 60 ℃.
In some embodiments, in the step S102, after the water level of the water tank is compensated by 30% of the level meter, the circulating water pump is started, and after 15S of delay, after the water pump is completely started, whether the water flow is present is judged by detecting the water inlet pressure value.
In some embodiments, in the step S102, conductivity data of the circulating water is detected, and when the conductivity data of the circulating water is higher than a preset value of conductivity, and after the control system operates for 10min-15min, a prompt for replacing the circulating water filter is output when the conductivity data of the circulating water is higher than 1.5 us/cm.
In some embodiments, after the tank water level is replenished 30% of the level gauge in step S102, the heater is turned on below 48 ℃ and turned off above or equal to 48 ℃.
In some embodiments, in the step S102, when the water circulation temperature is equal to or higher than 50 ℃, a cooling fan on a radiator for water circulation temperature adjustment is turned on,
and when the water circulation temperature is less than or equal to 48 ℃, the cooling fan is turned off.
In the self-checking operation control system of the PEM electrolytic hydrogen production device, the self-checking operation control system comprises the following steps:
s101, detecting a temperature value of water circulation in a pipeline, and when the temperature value of circulating water is higher than or lower than a water temperature preset value, prohibiting starting of the hydrogen production device by a control system;
s102, detecting the water level state of the water tank, and when the water level of the water tank is lower than a preset liquid level value, controlling the water replenishing valve to be opened by the control system to replenish water;
s103, detecting a hydrogen concentration value in ambient air, and when the hydrogen concentration value is higher than a hydrogen concentration preset value, prohibiting starting of the hydrogen production device by the control system;
and S104, detecting the pressure value of the hydrogen system, and controlling the hydrogen production device to be prohibited to start by the control system and performing pressure relief control when the pressure value is higher than a pressure preset value.
Compared with the prior art, when the PEM electrolytic hydrogen production device is started, the water circulation temperature of the system, the water level of the water tank of the equipment, the hydrogen concentration in the ambient air and the pressure of the hydrogen system of the equipment are self-checked, when the parameters of the components in the system cannot reach the operation conditions (such as overhigh/overlow water temperature of the water tank, overhigh water shortage, overhigh hydrogen concentration and overhigh pressure), the components are subjected to cooling/preheating, water supplementing and pressure relieving treatment, when the water circulation temperature reaches 50-53 ℃, the hydrogen production efficiency is highest, the circulating water pump is started in advance, the circulating water is filtered, and the water quality is improved, so that the aims of protecting the electrolytic tank and efficiently producing hydrogen are fulfilled, and the PEM electrolytic hydrogen production device is safer and more efficient for hydrogen production.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a flow chart of one embodiment of the present invention providing a self-test operation control system for a PEM electrolytic hydrogen plant;
FIG. 2 is a control flow diagram of one embodiment of the present invention providing a self-test operation control system for a PEM electrolytic hydrogen plant.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1-2, in a first embodiment of the self-test operation control system of a PEM electrolytic hydrogen production plant of the present invention, the self-test operation control system of a PEM electrolytic hydrogen production plant comprises the steps of:
s101, configuring a water temperature sensor in a water conveying pipeline, detecting a water circulation temperature value in the water conveying pipeline through the water temperature sensor, feeding the temperature value back to a main control system, and prohibiting the control system from starting the hydrogen production device according to a comparison result when the temperature value of circulating water is higher than or lower than a water temperature preset value of the main control system;
wherein the range of the water temperature preset value is set to be lower than 5 ℃ or higher than 60 ℃.
S102, configuring a liquid level sensor in the water tank, detecting the water liquid level state (or liquid level value) of the water tank through the liquid level sensor, feeding back the water liquid level state (or the liquid level value) to a main control system, and controlling the water supplementing valve to be opened by the control system to supplement water when the liquid level (or the liquid level value) of the water tank is lower than a liquid level preset value (such as lower than 30 percent);
s103, at least one hydrogen concentration detector is arranged in a process/assembly room (corresponding to the space where the electrolytic stack and the pipeline are arranged), the hydrogen concentration value in the ambient air (corresponding to the space where the electrolytic stack and the pipeline are arranged) is detected through the hydrogen concentration detector, the hydrogen concentration value is fed back to a main control system, and when the hydrogen concentration value is higher than a hydrogen concentration preset value (higher than 0.4%), the control system prohibits the starting of the hydrogen production device;
s104, configuring a plurality of pressure sensors in the hydrogen conveying pipeline, detecting the pressure value of the hydrogen system through the pressure sensors, feeding the pressure value back to the main control system, and controlling the hydrogen production device to be prohibited to be started by the control system when the pressure value is higher than a pressure preset value (such as 3.2 mpa), and performing pressure release control so that the pressure in the hydrogen conveying pipeline is kept in a preset range.
When the PEM electrolytic hydrogen production device is started, the water circulation temperature of the system, the water level of the water tank of the equipment, the hydrogen concentration in the ambient air and the pressure of the hydrogen system of the equipment are self-checked, when the parameters of components in the system cannot reach the operation conditions (such as overhigh/overlow water temperature of the water tank, overhigh water shortage, overhigh hydrogen concentration and overhigh pressure), the components are subjected to cooling/preheating, water supplementing and pressure relieving treatment, when the water circulation temperature reaches 50-53 ℃, the hydrogen production efficiency is highest, the circulating water pump is started in advance, the circulating water is filtered, and the water quality is improved, so that the aims of protecting the electrolytic tank and efficiently producing hydrogen are fulfilled, and the PEM electrolytic hydrogen production device is safer and more efficient for hydrogen production.
In some embodiments, in the step S102, after the water level of the water tank is supplemented by 30% of the level meter, the circulating water pump is started, and after 15S-20S of delay, the water pump is completely started, and whether the water flow is present is judged by detecting the water inlet pressure value.
In some embodiments, in the step S102, conductivity data of the circulating water is detected, and when the conductivity data of the circulating water is higher than a preset conductivity value, and the control system operates for 10min-15min, the control system correspondingly outputs a prompt for replacing the circulating water filter when the conductivity data of the circulating water is higher than 1.5 us/cm.
In some embodiments, after the tank water level is replenished 30% of the level gauge in step S102, the heater is turned on below 48 ℃ and turned off above or equal to 48 ℃.
In some embodiments, in the step S102, when the water circulation temperature is equal to or greater than 50 ℃, a cooling fan on the radiator for water circulation temperature adjustment is turned on;
when the water circulation temperature is less than or equal to 48 ℃, the cooling fan is turned off.
Specifically, after the PEM electrolytic hydrogen plant self-test passes, the operator may click the "standby start" button;
when the water level of the water tank is supplemented with 30% of the liquid level meter, the control system controls the circulating water pump to be started, after the time is 15-20 seconds, after the water pump is completely started, whether water flow exists or not is judged by detecting the pressure of inlet water (the pressure is 0.15-0.2 bar), the circulating water conductivity data (whether the circulating water conductivity data is lower than 1.2-1.5us/cm or not) is detected, and the circulating water filter is also higher than 1.5us/cm after the circulating water filter is operated for 10-15 minutes, so that the circulating water filter is replaced;
after the water level of the water tank is supplemented by 30% of the liquid level meter, the heater is started when the temperature of the water tank is lower than 48 ℃, and is closed when the temperature of the water tank is higher than or equal to 48 ℃;
the water circulation cooling fan (or cooling the circulating water by cooling water) is started, and the water circulation temperature is equal to or higher than 50 ℃ and is equal to or lower than 48 ℃.
After the above steps are completed, the water circulation of the PEM electrolytic hydrogen production device is ready (namely, the self-checking operation control system finishes self-checking and standby operation preparation), and a device user can directly load electrolytic current to produce hydrogen in the next step in a standby state.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (6)
1. A self-test operation control system for a PEM electrolytic hydrogen plant comprising the steps of:
s101, detecting a temperature value of water circulation in a pipeline, and when the temperature value of circulating water is higher than or lower than a water temperature preset value, prohibiting starting of the hydrogen production device by a control system;
s102, detecting the water level state of the water tank, and when the water level of the water tank is lower than a preset liquid level value, controlling the water replenishing valve to be opened by the control system to replenish water;
s103, detecting a hydrogen concentration value in ambient air, and when the hydrogen concentration value is higher than a hydrogen concentration preset value, prohibiting starting of the hydrogen production device by the control system;
and S104, detecting the pressure value of the hydrogen system, and controlling the hydrogen production device to be prohibited to start by the control system and performing pressure relief control when the pressure value is higher than a pressure preset value.
2. A self-test operation control system for a PEM electrolytic hydrogen plant according to claim 1,
in the step S101, the range of the water temperature preset value is set to be lower than 5 ℃ or higher than 60 ℃.
3. A self-test operation control system for a PEM electrolytic hydrogen plant according to claim 1,
in the step S102, after the water level of the water tank is compensated by 30% of the liquid level meter, the circulating water pump is started, after 15S of delay, the water pump is completely started, and whether water flow exists is judged by detecting the water inlet pressure value.
4. A self-test operation control system for a PEM electrolytic hydrogen plant according to claim 3,
in the step S102, detecting the conductivity data of the circulating water, when the conductivity data of the circulating water is higher than a preset conductivity value, controlling the system to run for 10-15 min, and when the conductivity data of the circulating water is higher than 1.5us/cm, outputting a prompt for replacing a circulating water filter.
5. A self-test operation control system for a PEM electrolytic hydrogen plant according to claim 3,
in the step S102, after the water level of the water tank is supplemented by 30% of the liquid level meter, the heater is started when the temperature of the water tank is lower than 48 ℃, and is closed when the temperature is higher than or equal to 48 ℃.
6. A self-test operation control system for a PEM electrolytic hydrogen plant according to claim 3,
in the step S102, when the water circulation temperature is equal to or higher than 50 ℃, a cooling fan on a radiator for water circulation temperature adjustment is turned on,
and when the water circulation temperature is less than or equal to 48 ℃, the cooling fan is turned off.
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| CN202310289761.2A CN117187877A (en) | 2023-03-23 | 2023-03-23 | Self-checking operation control system of PEM electrolytic hydrogen production device |
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| CN202310289761.2A CN117187877A (en) | 2023-03-23 | 2023-03-23 | Self-checking operation control system of PEM electrolytic hydrogen production device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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