Pressure-bearing automatic drainage method for electrolytic hydrogen production system

Abstract

The invention relates to the technical field of electrolytic hydrogen production, in particular to a pressure-bearing automatic drainage method for an electrolytic hydrogen production system, which comprises the following steps: synchronously acquiring valve state data and pressure data of a hydrogen side and an oxygen side of a target system to form a hydrogen side state data set and an oxygen side state data set; on the basis of the hydrogen side state data set, through a hydrogen side drainage control strategy, the valve state is monitored, and coordinated control with system pressure is achieved; based on the coupling relation between the hydrogen side drainage and the oxygen side drainage, a coordinated drainage strategy is established and combined with a self-adaptive drainage duration control strategy to form an overall drainage strategy, so that the overall operation efficiency of the target system is improved.

Description

Technical Field

[0001] This invention relates to the field of electrolytic hydrogen production technology, and in particular to a method for automatic drainage under pressure in an electrolytic hydrogen production system. Background Technology

[0002] Hydrogen production by electrolysis is the process of using electricity to decompose water into hydrogen and oxygen. The electrolysis process takes place in an electrolyzer. A key aspect of producing "green hydrogen" through electrolysis is that if the electricity used comes from renewable energy sources such as solar, wind, and hydropower, the entire hydrogen production process produces almost no carbon emissions. This type of hydrogen is called "green hydrogen" and is a core carrier for achieving deep decarbonization and energy transition.

[0003] The oxygen and hydrogen produced by electrolysis contain a mixture of water vapor and trace amounts of electrolytes. Therefore, cooling and gas-liquid separation are necessary, with the separation process primarily taking place within a gas-liquid separator. The condensed liquid water is separated from the hydrogen gas, and the condensate typically collects in an automatic drain or collection tank at the bottom of the separator, from where it is discharged via an automatic drain valve.

[0004] The drainage process affects the gas pressure on the hydrogen and oxygen sides. However, existing automatic drainage processes are usually periodic and cannot be coordinated with system pressure changes, which can easily lead to an excessive pressure difference on both sides of the electrolyzer diaphragm. Summary of the Invention

[0005] This invention employs a hydrogen-side drainage control strategy to monitor valve status and coordinate control with system pressure, minimizing the disturbance to system pressure caused by the drainage process.

[0006] The technical solution proposed in this invention is: a method for automatic drainage under pressure in an electrolytic hydrogen production system, the method comprising: Simultaneously acquire valve status data and pressure data on the hydrogen and oxygen sides of the target system to form hydrogen side status datasets and oxygen side status datasets; Based on the hydrogen-side status dataset, a hydrogen-side drainage control strategy is used to monitor the valve status and coordinate control with the system pressure. Based on the coupling relationship between hydrogen-side drainage and oxygen-side drainage, a coordinated drainage strategy is established and combined with an adaptive drainage duration control strategy to form an overall drainage strategy, thereby improving the overall operating efficiency of the target system.

[0007] Preferably, the simultaneous acquisition of valve status data and pressure data on the hydrogen and oxygen sides of the target system, forming hydrogen-side status datasets and oxygen-side status datasets, includes: Continuous measurement of hydrogen side pressure and liquid level data ; Collect the status of the hydrogen side drain valve , ; Continuous measurement of oxygen side pressure and liquid level data ; Collect the status of the hydrogen side drain valve , ; Collected , and The data is preprocessed and aligned on the time axis to form a hydrogen-side state dataset. ; Collected , and The data is preprocessed and aligned along the time axis to form an oxygen-side state dataset. .

[0008] Preferably, the step of monitoring valve status and coordinating control with system pressure through a hydrogen-side drainage control strategy based on hydrogen-side status dataset includes: Verify valve status; A hydrogen-side drainage control strategy was introduced to implement safe drainage sequence control. After opening the drain valve, perform the drainage process monitoring steps.

[0009] Preferably, the verification of valve status includes: Read the hydrogen-side drain valve command status Valve status ; if This triggers a drainage anomaly alarm; a status verification value is then fed back. ; if If this occurs, a leak alarm will be triggered; a status verification value will be fed back. ; in, This indicates that the valve is closed. This indicates that the valve is open; If no drainage anomaly alarm or leakage alarm is triggered, then a status verification value is fed back. .

[0010] Preferably, the hydrogen-side drainage control strategy, which implements safe drainage sequence control, includes: Issue a drainage command, that is ; if and and and If so, the valve will be activated to drain the water; among which, Indicates the drainage threshold. Indicates minimum pressure. Indicates maximum pressure; Start the preset drainage timer to monitor drainage duration. And set a threshold for drainage duration. ; The step of monitoring the drainage process after the valve is opened includes: Calculate the rate of change of pressure ,if This indicates a significant leak in the valve, triggering an alarm for abnormal pressure changes. Indicates the monitoring sampling period; This represents the threshold for the rate of pressure change within a monitoring period. This indicates the node pressure during the preset monitoring period; if and If the drainage timeout is detected, a valve blockage alarm will be triggered. This indicates the preset drainage rate of the hydrogen-side drain valve; Indicates the longest time for a single drainage operation; When detected At that time, a stop drainage command is issued, and a status verification value is received. If , in resetting the drain timer.

[0011] Preferably, the step of monitoring valve status and coordinating control with system pressure through a hydrogen-side drainage control strategy based on hydrogen-side status dataset further includes: The drainage process is optimized based on the pressure and water characteristics of the hydrogen side, namely by combining a dynamic drainage triggering strategy and an adaptive drainage duration control strategy, including: Calculate multiple derived features on the hydrogen side, including: Calculate the rate of change of pressure It is used to reflect the dynamic trend of hydrogen-side pressure changes; express Hydrogen side pressure at any given moment; Calculate the pressure stability index This is used to characterize the degree of pressure fluctuation on the hydrogen side; among which, Indicates hydrogen-side pressure In the time window within the standard deviation, This represents the average pressure value within the time window. Calculate the rate of water level rise Used to characterize the hydrogen-side water production efficiency, among which express Water level at any time; Based on the obtained multiple derived features, a dynamic drainage triggering strategy is executed, including: Calculate the dynamic trigger threshold ;in, Indicates the basic high water level threshold; Indicates the pressure stability sensitivity coefficient; Therefore, the triggering condition for integrated drainage is: ;in, , Minimum and maximum pressure boundaries for permissible drainage; This indicates the tolerance threshold for the rate of pressure drop; When all the conditions for triggering comprehensive drainage are met, the system enters the preparatory drainage state. Issue a drainage command, receive feedback status verification value, if Then the drain valve will open, and the system will enter the draining state. After entering the drainage state, an adaptive drainage duration control strategy is activated, including: Estimated drainage volume ;in, This indicates the flow coefficient of the drain valve. Indicates atmospheric pressure; Calculate the dynamic early closure water level ;in, This indicates the cross-sectional area of ​​the hydrogen-side separator; Indicates the mechanical delay time for valve closure; when When this happens, close the drain valve. Indicates the target stopping water level; when and Immediately close the drain valve; when If so, immediately close the drain valve. This indicates the pressure drop rate threshold for emergency valve closure.

[0012] Preferably, the establishment of a coordinated drainage strategy based on the coupling relationship between hydrogen-side drainage and oxygen-side drainage includes: Establishing the coupling relationship between hydrogen-side drainage and oxygen-side drainage includes: The coupling point is taken as the maximum allowable pressure difference that the diaphragm of the electrolytic cell can withstand. and Pressure difference between ,in, This indicates the maximum permissible pressure difference that the diaphragm of the electrolytic cell can withstand; Calculate the wastewater demand on the oxygen and hydrogen sides, including: Hydrogen-side drainage demand ; oxygen-side drainage demand ;in, ;in, , Indicates oxygen-side pressure In the time window The standard deviation and mean pressure value within the range; , This indicates the low water level threshold and high water level threshold on the hydrogen side; , Indicates the weighting coefficient; Prioritize drainage safety checks, namely: if If the pressure is too high, drainage should be stopped, and pressure balance should be restored through the pressure regulating valve. ;in, Indicating safety pressure, This indicates the maximum permissible pressure difference that the diaphragm of the electrolytic cell can withstand; When the pressure on the oxygen and hydrogen sides is well balanced, a single-sided independent drainage mode is adopted, including: if Then start draining water from the hydrogen side; if Then, oxygen-side drainage will be initiated; among which, , This indicates the hydrogen-side wastewater demand threshold and the oxygen-side wastewater demand threshold; When the drainage demand on either the oxygen or hydrogen side is high and may trigger a pressure differential risk, a coordinated drainage mode on both sides is activated, including: if If so, the oxygen side drainage will be initiated first; if If so, the hydrogen side drainage will be initiated first; During the activation of the dual-sided coordinated drainage mode, if If so, then drainage will be stopped.

[0013] Preferably, the combined adaptive drainage duration control strategy includes: In the dual-sided coordinated drainage mode, differential pressure feedback correction is performed, including: Correcting the dynamic early closure of water levels ,Right now: ;in, This indicates that the water level will be closed ahead of schedule after the adjustment. Represents the coupling sensitivity coefficient. This represents the rate of change of the absolute value of the pressure difference; During the hydrogen-side drainage process, when and Immediately close the drain valve; During oxygen-side drainage, when and If necessary, immediately close the drain valve.

[0014] An electronic device includes a processor, a communication module connected to the processor, and a memory, the electronic device being used to implement the aforementioned method for automatic drainage under pressure in an electrolytic hydrogen production system.

[0015] A computer-readable storage medium storing a computer program that is executed by a processor to implement the method for automatic pressure drainage of an electrolytic hydrogen production system.

[0016] The beneficial effects of this invention are: 1. This invention optimizes hydrogen-side drainage by combining a dynamic drainage triggering strategy and an adaptive drainage duration control strategy. This allows sufficient water to be discharged in the shortest possible time, reducing the number and duration of valve openings, minimizing the pressure disturbance caused by the drainage process, and avoiding excessively low pressure (risk of air backflow) or large-scale hydrogen leakage.

[0017] 2. In the present invention, differential pressure feedback correction is performed in the dual-sided coordinated drainage mode to maintain pressure during drainage operation. This means that the pressure requirements of the diaphragm are met; and, under the constraint of pressure balance, the water in both separators is removed in a timely and effective manner. Attached Figure Description

[0018] Figure 1 This is a flowchart of a method for automatic drainage under pressure in an electrolytic hydrogen production system according to the present invention. Detailed Implementation

[0019] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0020] It is understood that the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0021] refer to Figure 1 The technical solution provided by this invention is: a method for automatic drainage under pressure in an electrolytic hydrogen production system, the method comprising: Step 1: Synchronously acquire valve status data and pressure data from both the hydrogen and oxygen sides of the target system to form hydrogen-side status datasets and oxygen-side status datasets. Specifically, this includes the following steps: Synchronously acquiring valve status data and pressure data from both the hydrogen and oxygen sides of the target system to form hydrogen-side status datasets and oxygen-side status datasets includes: Continuous measurement of pressure inside the hydrogen-side separator Liquid level data at the bottom of the separator ; Collect the status of the hydrogen side drain valve , ; Continuous measurement of pressure within the oxygen-side separator Liquid level data at the bottom of the separator ; Collect the status of the hydrogen side drain valve , ; Collected , and The data is preprocessed and aligned on the time axis to form a hydrogen-side state dataset. ; Collected , and The data is preprocessed and aligned along the time axis to form an oxygen-side state dataset. .

[0022] Step 2: Based on the hydrogen-side status dataset, monitor the valve status and coordinate control with system pressure using a hydrogen-side drainage control strategy. This includes the following steps: The method, based on the hydrogen-side state dataset, monitors valve status and coordinates control with system pressure through a hydrogen-side drainage control strategy, including: Step 2.1: Verify the valve status, which includes the following steps: Read the hydrogen-side drain valve command status Valve status ; if and This triggers a drainage anomaly alarm; a status verification value is then fed back. ; if and If this occurs, a leak alarm will be triggered; a status verification value will be fed back. ; in, This indicates that the valve is closed. This indicates that the valve is open; If no drainage anomaly alarm or leakage alarm is triggered, then a status verification value is fed back. .

[0023] Step 2.2: Import the hydrogen-side drainage control strategy and implement safe drainage sequence control, specifically including the following steps: issue a drainage command, i.e. ; if and and If so, the valve will be activated to drain the water; among which, Indicates the drainage threshold. Indicates minimum pressure. Indicates maximum pressure; Start the preset drainage timer to monitor drainage duration. And set a threshold for drainage duration. ; Step 2.3: After the valve is opened, monitor the drainage process, which includes the following steps: Calculate the rate of change of pressure ,if This indicates a significant leak in the valve, triggering an alarm for abnormal pressure changes. Indicates the monitoring sampling period; This represents the threshold for the rate of pressure change within a monitoring period. This indicates the node pressure during the preset monitoring period; if and If the drainage timeout is detected, a valve blockage alarm will be triggered. This indicates the preset drainage rate of the hydrogen-side drain valve; Indicates the longest time for a single drainage operation; When detected At that time, a stop drainage command is issued, and a status verification value is received. If , in resetting the drain timer.

[0024] To drain sufficient water in the shortest possible time, reduce the number and duration of valve openings, minimize system pressure disturbances during drainage, and ensure that drainage does not lead to excessively low pressure (risk of air backflow) or large-scale hydrogen leakage under any circumstances, this embodiment provides the following technical solution: Step 2.4: Optimize the drainage process based on the pressure and water characteristics on the hydrogen side, that is, by combining a dynamic drainage triggering strategy and an adaptive drainage duration control strategy, including: Calculate multiple derived features on the hydrogen side, including: Calculate the rate of change of hydrogen pressure without drainage. It is used to reflect the dynamic trend of hydrogen-side pressure changes; express Hydrogen side pressure at any given moment; Calculate the pressure stability index This is used to characterize the degree of pressure fluctuation on the hydrogen side; among which, Indicates hydrogen-side pressure In the time window within the standard deviation, This represents the average pressure value within the time window. Calculate the rate of water level rise Used to characterize the hydrogen-side water production efficiency, among which express Water level at any time; Based on the obtained multiple derived features, a dynamic drainage triggering strategy is executed, including: Calculate the dynamic trigger threshold ;in, This indicates the basic high water level threshold (e.g., 80%). Indicates the pressure stability sensitivity coefficient (greater than 0); By setting a dynamic trigger threshold, the trigger water level can be lowered to drain water in advance when pressure fluctuations are large, thus reducing pressure fluctuations; and it can avoid pressure fluctuations when the pressure is stable. (Very small) Drainage causes pressure fluctuations, so reduce the frequency of drainage.

[0025] The integrated drainage triggering condition is: ;in, , Minimum and maximum pressure boundaries for permissible drainage; This indicates the tolerance threshold for the rate of pressure drop; When all the conditions for triggering comprehensive drainage are met, the system enters the preparatory drainage state. Issue a drainage command, receive feedback status verification value, if Then the drain valve will open, and the system will enter the draining state. After entering the drainage state, an adaptive drainage duration control strategy is activated, including: Estimated drainage volume ;in, This indicates the flow coefficient of the drain valve. Indicates atmospheric pressure; Calculate the dynamic early closure water level ;in, This indicates the cross-sectional area of ​​the hydrogen-side separator; Indicates the mechanical delay time for valve closure; when When this happens, close the drain valve. Indicates the target stop water level (15%); set up The shut-off time can be dynamically adjusted based on real-time drainage flow. When the flow is high, it can be shut off earlier to reduce drainage time. When the flow is low, the shut-off time can be delayed to ensure the final water level reaches the target stop level.

[0026] when and Immediately close the drain valve; when If so, immediately close the drain valve. This indicates the pressure drop rate threshold for emergency valve closure. This is to ensure that venting does not lead to excessively low pressure (risk of air backflow) or significant hydrogen leakage.

[0027] Step 3: Based on the coupling relationship between hydrogen-side drainage and oxygen-side drainage, establish a coordinated drainage strategy and combine it with an adaptive drainage duration control strategy to form an overall drainage strategy to improve the overall operating efficiency of the target system.

[0028] Step 3.1: Establish the coupling relationship between hydrogen-side drainage and oxygen-side drainage, including: The coupling point is the maximum allowable pressure difference that the diaphragm of the electrolytic cell can withstand, because any drainage operation on either side will cause the pressure on that side to drop instantaneously, thereby disrupting the pressure balance.

[0029] and Pressure difference between ,in, This indicates the maximum permissible pressure difference that the diaphragm of the electrolytic cell can withstand.

[0030] Step 3.2: Calculate the wastewater demand on the oxygen and hydrogen sides, including: Hydrogen-side drainage demand ; oxygen-side drainage demand ;in, ;in, , Indicates oxygen-side pressure In the time window The standard deviation and mean pressure value within the range; , This indicates the low water level threshold and high water level threshold on the hydrogen side; , The weighting coefficient represents the importance of balancing water level and pressure stability; the higher the demand, the more urgent the need for drainage on that side. Prioritize drainage safety checks, namely: if If the pressure is too high, drainage should be stopped, and pressure balance should be restored through the pressure regulating valve. ;in, Indicating safety pressure, This indicates the maximum permissible pressure difference that the diaphragm of the electrolytic cell can withstand; When the pressure on the oxygen and hydrogen sides is well balanced, a single-sided independent drainage mode is adopted, including: if Then start draining water from the hydrogen side; if Then, oxygen-side drainage will be initiated; among which, , This indicates the hydrogen-side wastewater demand threshold and the oxygen-side wastewater demand threshold; When the drainage demand on either the oxygen or hydrogen side is high and may trigger a pressure differential risk, a coordinated drainage mode on both sides is activated, including: if If so, the oxygen side drainage will be initiated first; if If so, the hydrogen side drainage will be initiated first; During the activation of the dual-sided coordinated drainage mode, if If so, then drainage will be stopped.

[0031] Step 3.3: In the dual-sided coordinated drainage mode, perform differential pressure feedback correction, including: Correcting the dynamic early closure of water levels .Right now: ;in, This indicates that the water level will be closed ahead of schedule after the adjustment. This indicates the coupling sensitivity coefficient (causing the drain valve to close earlier when the absolute value of the pressure difference increases rapidly). This represents the rate of change of the absolute value of the pressure difference; During the hydrogen-side drainage process, when Immediately close the drain valve; During oxygen-side drainage, when and If necessary, immediately close the drain valve.

[0032] If during drainage Excessive changes indicate that the pressure differential is rapidly deteriorating, and drainage should be stopped in advance, even if the target water level has not yet been reached.

[0033] By following the steps above, it is possible to maintain [the desired level of drainage] during all drainage operations. This means that the pressure requirements of the diaphragm are met; and, under the constraint of pressure balance, the water in both separators is removed in a timely and effective manner.

[0034] The present invention also provides an electronic device, including a processor, a communication module and a memory connected to the processor, the electronic device being used to implement the aforementioned method for automatic drainage under pressure in an electrolytic hydrogen production system.

[0035] The present invention also provides a computer-readable storage medium storing a computer program that is executed by a processor to implement the aforementioned method for automatic drainage under pressure in an electrolytic hydrogen production system.

[0036] The processes described above with reference to the flowcharts in the embodiments disclosed in this invention can be implemented as computer software programs. The embodiments disclosed in this invention include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication component, and / or installed from a removable medium. When the computer program is executed by a central processing unit (CPU), it performs the functions defined in the methods of this application. It should be noted that the computer-readable medium described above in this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. Computer-readable storage media can be, for example, but not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wire segments, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in connection with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless segments, wire segments, optical fibers, RF, etc., or any suitable combination thereof.

[0037] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0038] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles described, the implementation of the present invention may have any changes or modifications.

Claims

1. A method for automatic drainage under pressure in an electrolytic hydrogen production system, characterized in that, The method includes: Simultaneously acquire valve status data and pressure data on the hydrogen and oxygen sides of the target system to form hydrogen side status datasets and oxygen side status datasets; Based on the hydrogen-side status dataset, a hydrogen-side drainage control strategy is used to monitor the valve status and coordinate control with the system pressure. Based on the coupling relationship between hydrogen-side drainage and oxygen-side drainage, a coordinated drainage strategy is established and combined with an adaptive drainage duration control strategy to form an overall drainage strategy, thereby improving the overall operating efficiency of the target system.

2. The method for automatic pressurized drainage of an electrolytic hydrogen production system according to claim 1, characterized in that, The process chain for importing the target product's pre-set composite processing steps based on technical information includes: The simultaneous acquisition of valve status data and pressure data on the hydrogen and oxygen sides of the target system constitutes hydrogen-side status datasets and oxygen-side status datasets, including: Continuous measurement of hydrogen side pressure and liquid level data ; Collect the status of the hydrogen side drain valve , ; Continuous measurement of oxygen side pressure and liquid level data ; Collect the status of the hydrogen side drain valve , ; Collected , and The data is preprocessed and aligned on the time axis to form a hydrogen-side state dataset. ; Collected , and The data is preprocessed and aligned along the time axis to form an oxygen-side state dataset. .

3. The method for automatic drainage under pressure in an electrolytic hydrogen production system according to claim 2, characterized in that, The method, based on the hydrogen-side state dataset, monitors valve status and coordinates control with system pressure through a hydrogen-side drainage control strategy, including: Verify valve status; A hydrogen-side drainage control strategy was introduced to implement safe drainage sequence control. After opening the drain valve, perform the drainage process monitoring steps.

4. The method for automatic drainage under pressure in an electrolytic hydrogen production system according to claim 3, characterized in that, The verification of valve status includes: Read the hydrogen-side drain valve command status Valve status ; if and This triggers a drainage anomaly alarm; a status verification value is then fed back. ; if and If this occurs, a leak alarm will be triggered; a status verification value will be fed back. ; in, This indicates that the valve is closed. This indicates that the valve is open; If no drainage anomaly alarm or leakage alarm is triggered, then a status verification value is fed back. .

5. The method for automatic pressurized drainage of an electrolytic hydrogen production system according to claim 4, characterized in that, The hydrogen import side drainage control strategy includes safe drainage sequence control, comprising: Issue a drainage command, that is ; if and and and If so, the valve will be activated to drain the water; among which, Indicates the drainage threshold. Indicates minimum pressure. Indicates maximum pressure; Start the preset drainage timer to monitor drainage duration. And set a threshold for drainage duration. ; The step of monitoring the drainage process after the valve is opened includes: Calculate the rate of change of pressure ,if This indicates a significant leak in the valve, triggering an alarm for abnormal pressure changes. Indicates the monitoring sampling period; This represents the threshold for the rate of pressure change within a monitoring period. This indicates the node pressure during the preset monitoring period; if If the drainage timeout is detected, a valve blockage alarm will be triggered. This indicates the preset drainage rate of the hydrogen-side drain valve; Indicates the longest time for a single drainage operation; When detected At that time, a stop drainage command is issued, and a status verification value is received. If , in resetting the drain timer.

6. The method for automatic pressurized drainage of an electrolytic hydrogen production system according to claim 5, characterized in that, The method of monitoring valve status and coordinating control with system pressure based on hydrogen-side state dataset and hydrogen-side drainage control strategy also includes: The drainage process is optimized based on the pressure and water characteristics of the hydrogen side, namely by combining a dynamic drainage triggering strategy and an adaptive drainage duration control strategy, including: Calculate multiple derived features on the hydrogen side, including: Calculate the rate of change of pressure It is used to reflect the dynamic trend of hydrogen-side pressure changes; express Hydrogen side pressure at any given moment; Calculate the pressure stability index This is used to characterize the degree of pressure fluctuation on the hydrogen side; among which, Indicates hydrogen-side pressure In the time window within the standard deviation, This represents the average pressure value within the time window. Calculate the rate of water level rise Used to characterize the hydrogen-side water production efficiency, among which express Water level at any time; Based on the obtained multiple derived features, a dynamic drainage triggering strategy is executed, including: Calculate the dynamic trigger threshold ;in, Indicates the basic high water level threshold; Indicates the pressure stability sensitivity coefficient; Therefore, the triggering condition for integrated drainage is: ;in, , Minimum and maximum pressure boundaries for permissible drainage; This indicates the tolerance threshold for the rate of pressure drop; When all the conditions for triggering comprehensive drainage are met, the system enters the preparatory drainage state. Issue a drainage command, receive feedback status verification value, if Then the drain valve will open, and the system will enter the draining state. After entering the drainage state, an adaptive drainage duration control strategy is activated, including: Estimated drainage volume ;in, This indicates the flow coefficient of the drain valve. Indicates atmospheric pressure; Calculate the dynamic early closure water level ;in, This indicates the cross-sectional area of ​​the hydrogen-side separator; Indicates the mechanical delay time for valve closure; when When this happens, close the drain valve. Indicates the target stopping water level; Immediately shut off the drain valve; when and Immediately close the drain valve; when If so, immediately close the drain valve. This indicates the pressure drop rate threshold for emergency valve closure.

7. A method for automatic pressurized drainage of an electrolytic hydrogen production system according to claim 6, characterized in that, The coordinated drainage strategy established based on the coupling relationship between hydrogen-side drainage and oxygen-side drainage includes: Establishing the coupling relationship between hydrogen-side drainage and oxygen-side drainage includes: The coupling point is taken as the maximum allowable pressure difference that the diaphragm of the electrolytic cell can withstand. and Pressure difference between ,in, This indicates the maximum permissible pressure difference that the diaphragm of the electrolytic cell can withstand; Calculate the wastewater demand on the oxygen and hydrogen sides, including: Hydrogen-side drainage demand ; oxygen-side drainage demand ;in, ;in, , Indicates oxygen-side pressure In the time window The standard deviation and mean pressure value within the range; , This indicates the low water level threshold and high water level threshold on the hydrogen side; , Indicates the weighting coefficient; Prioritize drainage safety checks, namely: if If the pressure is too high, drainage should be stopped, and pressure balance should be restored through the pressure regulating valve. ;in, Indicating safety pressure, This indicates the maximum permissible pressure difference that the diaphragm of the electrolytic cell can withstand; When the pressure on the oxygen and hydrogen sides is well balanced, a single-sided independent drainage mode is adopted, including: if Then start draining water from the hydrogen side; if Then, oxygen-side drainage will be initiated; among which, , This indicates the hydrogen-side wastewater demand threshold and the oxygen-side wastewater demand threshold; When the drainage demand on either the oxygen or hydrogen side is high and may trigger a pressure differential risk, a coordinated drainage mode on both sides is activated, including: if If so, the oxygen side drainage will be initiated first; if If so, the hydrogen side drainage will be initiated first; During the activation of the dual-sided coordinated drainage mode, if If so, then drainage will be stopped.

8. A method for automatic pressurized drainage of an electrolytic hydrogen production system according to claim 7, characterized in that, The combined adaptive drainage duration control strategy includes: In the dual-sided coordinated drainage mode, differential pressure feedback correction is performed, including: Correcting the dynamic early closure of water levels ,Right now: ;in, This indicates that the water level will be closed ahead of schedule after the adjustment. Represents the coupling sensitivity coefficient. This represents the rate of change of the absolute value of the pressure difference; During the hydrogen-side drainage process, when and Immediately close the drain valve; During oxygen-side drainage, when and If necessary, immediately close the drain valve.

9. An electronic device, comprising a processor, a communication module connected to the processor, and a memory, characterized in that, The electronic device is used to implement the method for automatic drainage under pressure in an electrolytic hydrogen production system as described in any one of claims 1-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that is executed by a processor to implement a method for automatic drainage under pressure in an electrolytic hydrogen production system as described in any one of claims 1-8.

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