Interlocking control method and device of hydrogen production system, electronic equipment and storage medium

Abstract

The invention provides an interlocking control method and device of a hydrogen production system, electronic equipment and a storage medium. The method comprises the steps of obtaining overall process parameters of the hydrogen production system and single process parameters of each electrolytic cell in the hydrogen production system, and executing a multi-stage interlocking control strategy of the hydrogen production system, including: in response to a judgment result that the overall process parameters meet a low early warning condition, adjusting and reducing electrical parameters of at least one electrolytic cell; responding to the judgment result that the single process parameters of any electrolytic cell meet the low early warning condition, and controlling the corresponding electrolytic cell to stop running; and in response to a judgment result that the overall process parameter or the single process parameter of any electrolytic cell meets the high early warning condition, controlling the hydrogen production system to stop running. Equipment adjustment of the hydrogen production system is executed by adopting a multi-stage interlocking control strategy, and the situation that the running stability of the hydrogen production system is affected due to the fact that the hydrogen pressure and the chlorine pressure fluctuate violently in the adjustment process can be avoided, so that safe production of the hydrogen production system is ensured.

Description

Technical Field

[0001] The present application relates to the field of production process control, and in particular to an interlocking control method, device, electronic equipment, storage medium, and computer program product of a hydrogen production system. Background Art

[0002] With the development of renewable energy technology, wind and solar energy have attracted widespread attention due to their clean and renewable characteristics. The green electricity produced by wind or photovoltaic power generation devices can be converted into chemical energy storage by electrolyzing salt water to produce hydrogen.

[0003] Ion exchange hydrogen production is a hydrogen production method based on electrochemical principles. The electrolytic cell is divided into an anode chamber and a cathode chamber by a cation exchange membrane. During electrolysis, a refined sodium chloride solution is injected into the anode chamber of the electrolytic cell, and an aqueous solution is injected into the cathode chamber. In the anode chamber, chloride ions are discharged to generate chlorine gas, while sodium ions carry a small amount of water molecules through the cation exchange membrane to flow to the cathode chamber. In the cathode chamber, hydrogen ions are discharged to generate hydrogen gas.

[0004] The ion exchange hydrogen production process is very complex and requires high control over process stability. During the hydrogen production process, if some monomer process parameters or overall process parameters are abnormal and fail to be handled in time, it is not only easy to cause abnormal interruption of the hydrogen production process, but also may cause damage to the hydrogen production process equipment, greatly affecting the production efficiency of the hydrogen production plant. Summary of the invention

[0005] In view of this, the present application provides an interlocking control scheme for a hydrogen production system, which can ensure the operational stability of the hydrogen production system and improve the safety of the process.

[0006] According to a first aspect of an embodiment of the present application, an interlocking control method for a hydrogen production system is provided, comprising: acquiring overall process parameters of the hydrogen production system and individual process parameters of each electrolyzer in the hydrogen production system; executing a multi-stage interlocking control strategy for the hydrogen production system according to the overall process parameters of the hydrogen production system and the individual process parameters of each electrolyzer, comprising: in response to a judgment result that the overall process parameters satisfy a given low warning condition, lowering the electrical parameters of at least one electrolyzer; in response to a judgment result that the individual process parameters of any one electrolyzer satisfy the low warning condition, controlling the any one electrolyzer to stop operating; in response to a judgment result that the overall process parameters or the individual process parameters of any one electrolyzer satisfy a given high warning condition, controlling the hydrogen production system to stop operating.

[0007] In some embodiments, the hydrogen production system includes a chlorine main pipe, a hydrogen main pipe and a pure water main pipe connected to each electrolyzer; the overall process parameters of the hydrogen production system include the chlorine main pipe pressure of the chlorine main pipe, the hydrogen main pipe pressure of the hydrogen main pipe, and the pure water pipeline flow of the pure water main pipe.

[0008] In some embodiments, when any of the following judgment conditions is met, a judgment result that the overall process parameter meets the low warning condition can be obtained:

[0009] If the hydrogen main pipe pressure is higher than a given hydrogen pressure low warning value;

[0010] If the pressure difference between the hydrogen main pipe pressure and the chlorine main pipe pressure is higher than a given pressure difference low warning value;

[0011] If the pure water pipeline flow is lower than a given pure water flow low warning value.

[0012] In some embodiments, the electrical parameter includes an input current value.

[0013] In some embodiments, in response to the judgment result that the overall process parameters meet a given low warning condition, the input current value of each electrolytic cell can be detected; according to a given adjustable current threshold, at least one electrolytic cell whose input current value is higher than the adjustable current threshold is determined as a target electrolytic cell; and the input current value of the target electrolytic cell is reduced.

[0014] In some embodiments, each electrolytic cell is respectively connected to a rectifier, a cathode liquid pipeline, and an anode liquid pipeline; the monomer process parameters of any electrolytic cell include the electrolytic cell operating parameters and the electrolytic cell temperature of the electrolytic cell, the rectifier operating parameters of the rectifier, the cathode liquid flow rate of the cathode liquid pipeline, and the anode liquid flow rate of the anode liquid pipeline.

[0015] In some embodiments, for any one of the target electrolytic cells among the electrolytic cells, when any of the following judgment conditions is met, a judgment result that the monomer process parameter of the target electrolytic cell meets the low warning condition can be obtained:

[0016] If, according to the rectifier operating parameters of the target electrolytic cell, an analysis result is obtained that the rectifier corresponding to the target electrolytic cell is in a shutdown state;

[0017] If, according to the electrolytic cell operating parameters of the target electrolytic cell, an analysis result is obtained that the target electrolytic cell is in a shutdown state;

[0018] If the cathode liquid flow rate of the target electrolytic cell is lower than a given cathode liquid flow rate warning value;

[0019] If the anolyte flow rate of the target electrolytic cell is lower than a given anolyte flow rate warning value;

[0020] If the electrolytic cell temperature of the target electrolytic cell is higher than a given low temperature warning value.

[0021] In some embodiments, when any of the following judgment conditions is met, a judgment result can be obtained that the overall process parameter or the monomer process parameter of any electrolytic cell meets a given high warning condition:

[0022] If the hydrogen main pipe pressure is higher than a given hydrogen pressure high warning value, wherein the hydrogen pressure high warning value is higher than the hydrogen pressure low warning value;

[0023] If the pressure difference between the hydrogen main pipe pressure and the chlorine main pipe pressure is higher than a given pressure difference high warning value, wherein the pressure difference high warning value is higher than the pressure difference low warning value;

[0024] If, according to the operating parameters of the rectifier of each electrolytic cell, an analysis result is obtained that the rectifier of each electrolytic cell is in a shutdown state;

[0025] If, based on the electrolytic cell operating parameters of each electrolytic cell, an analysis result is obtained that each electrolytic cell is in a shutdown state.

[0026] In some embodiments, each electrolytic cell includes a cathode chamber and an anode chamber; the individual process parameters of each electrolytic cell include the cathode liquid reserve in the cathode chamber and the anode liquid reserve in the anode chamber.

[0027] In some embodiments, if the cathode liquid reserve of any electrolytic cell is lower than a given cathode liquid reserve warning value or the anode liquid reserve is lower than a given anode liquid reserve warning value, a judgment result is obtained that the monomer process parameters of any one of the electrolytic cells meet the high warning condition.

[0028] In some embodiments, the hydrogen production system includes a chlorine compressor disposed in the chlorine main pipe and a hydrogen compressor disposed in the hydrogen main pipe; the overall process parameters include: compressor operating parameters of the chlorine compressor and the hydrogen compressor.

[0029] In some embodiments, if an analysis result is obtained that the chlorine compressor or the hydrogen compressor is in a shutdown state based on the compressor operating parameters of the chlorine compressor and the hydrogen compressor, a judgment result is obtained that the overall process parameters meet the high warning condition.

[0030] According to a second aspect of an embodiment of the present application, an interlocking control device for a hydrogen production system is provided, the device comprising: an acquisition module for acquiring overall process parameters of the hydrogen production system and individual process parameters of each electrolyzer in the hydrogen production system; a control module for executing a multi-stage interlocking control strategy of the hydrogen production system according to the overall process parameters of the hydrogen production system and the individual process parameters of each electrolyzer, which comprises:

[0031] In response to a determination that the overall process parameter satisfies a given low warning condition, lowering an electrical parameter of at least one electrolytic cell;

[0032] In response to a judgment result that a monomer process parameter of any one of the electrolytic cells meets the low warning condition, controlling the any one of the electrolytic cells to stop operating;

[0033] In response to a judgment result that the overall process parameter or a single process parameter of any one of the electrolytic cells meets a given high warning condition, the hydrogen production system is controlled to stop operating.

[0034] According to a third aspect of the present application, there is provided an electronic device comprising: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; the memory is used to store at least one executable instruction, wherein the executable instruction enables the processor to perform operations corresponding to the interlocking control method of the hydrogen production system as described in the first aspect.

[0035] According to a fourth aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which computer instructions are stored. When the computer instructions are executed by a processor, the processor executes the interlocking control method of the hydrogen production system as described in the first aspect.

[0036] According to a fifth aspect of an embodiment of the present application, a computer program product is provided, comprising computer instructions, wherein the computer instructions instruct a computing device to execute operations corresponding to the interlocking control method of the hydrogen production system as described in the first aspect.

[0037] The interlocking control scheme of the hydrogen production system provided in each embodiment of the present application implements a multi-level interlocking control strategy for the hydrogen production system according to the influence of different categories of parameters on the stability of equipment operation, so as to reduce the drastic fluctuations in chlorine gas pressure and hydrogen gas pressure during equipment adjustment, ensure the stability of equipment operation, and ensure the safe production of the hydrogen production system.

[0038] The interlocking control method of the hydrogen production system provided in each embodiment of the present application triggers a first-level interlocking control strategy when it is determined that the overall process parameters of the hydrogen production equipment exceed the normal range. By reducing the input current value of one or more electrolytic cells in the hydrogen production system, the intensity of the electrolysis reaction in the corresponding electrolytic cell is reduced, so that the output of chlorine and hydrogen is also reduced accordingly, thereby ensuring the safe production of the hydrogen production system.

[0039] The interlocking control method of the hydrogen production system provided in each embodiment of the present application triggers a secondary interlocking control strategy when it is determined that the single process parameter affects the stable operation of a single electrolyzer, so as to perform a shutdown operation on the electrolyzer that is in an unstable operating state and has a reduced input current value. This can not only further reduce the total production of hydrogen and chlorine, but also avoid drastic fluctuations in chlorine and hydrogen pressures caused by the shutdown operation of the electrolyzer, thereby improving the stability of equipment operation.

[0040] The interlocking control method of the hydrogen production system provided in each embodiment of the present application triggers a three-level interlocking control strategy to control the hydrogen production system to perform a shutdown operation to ensure production safety when it is determined that the overall process parameters or the individual process parameters affect the overall operating stability of the hydrogen production system. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Schematic diagram of the structure of an electrolyzer for performing traditional hydrogen production process.

[0042] Figure 2 The structure diagram of the hydrogen production system suitable for implementing the technical solutions of each embodiment of the present application is shown in FIG. Figure 1 Multiple electrolytic cells are shown.

[0043] Figure 3 It is a process flow chart of an interlocking control method of a hydrogen production system according to an exemplary embodiment of the present application.

[0044] Figure 4 It is a structural block diagram of an interlocking control device of a hydrogen production system according to an exemplary embodiment of the present application.

[0045] Figure 5 It is a schematic diagram of an electronic device according to an exemplary embodiment of the present application.

[0046] List of reference numerals:

[0047] 300. Interlocking control method of hydrogen production system

[0048] 302. Obtaining the overall process parameters of the hydrogen production system and the individual process parameters of each electrolyzer in the hydrogen production system

[0049] 304. Execute the multi-stage interlocking control strategy of the hydrogen production system according to the overall process parameters of the hydrogen production system and the individual process parameters of each electrolyzer.

[0050] 102, electrolytic cell 200, hydrogen production system 400, interlocking control device 104 of hydrogen production system, cation exchange membranes 102a-102n, electrolytic cell 402, acquisition module

[0051] 110, anode chambers 202a-202n, rectifier 404, control module

[0052] 112, anode chamber inlet 203, chlorine gas main 500, electronic equipment

[0053] 114, chlorine outlet 204, hydrogen main pipe 502, processor

[0054] 116, anolyte pipeline 205, chlorine compressor 504, communication interface

[0055] 120, cathode chamber 206, hydrogen compressor 506, storage

[0056] 122, cathode chamber entrance 207, chlorine tank 508, communication bus

[0057] 124, hydrogen outlet 208, hydrogen tank 510, procedure

[0058] 126, cathode liquid pipeline 209, pure water main pipe DETAILED DESCRIPTION

[0059] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the embodiments of the present application should fall within the scope of protection of the embodiments of the present application.

[0060] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the case where there is no conflict between the embodiments, the following embodiments and the features in the embodiments can be combined with each other. The steps in the following method embodiments are only used for exemplary description and are not intended to limit the present invention.

[0061] Ion exchange hydrogen production is a method of hydrogen production based on electrochemical principles. Figure 1, the electrolytic cell 102 is separated into an anode chamber 110 and a cathode chamber 120 by a cation exchange membrane 104. Sodium chloride solution can be injected into the anode chamber 110 through the anode chamber inlet 112, and pure water can be injected into the cathode chamber 120 through the cathode chamber inlet 122. Chloride ions in the anode chamber 110 can be discharged to generate chlorine gas, and released through the chlorine outlet 114 at the top. At the same time, the sodium ions in the anode chamber 110 can carry a small amount of water molecules and flow to the cathode chamber 120 through the cation exchange membrane 104. The hydrogen ions in the cathode chamber 120 can be discharged to generate hydrogen gas, and released through the hydrogen outlet 124 at the top.

[0062] In the present technical field, the liquid in the anode chamber 110 can be called the anode liquid, and the liquid in the cathode chamber 120 can be called the cathode liquid. The anode liquid in the anode chamber 110 is usually light salt water, which can be discharged through the anode liquid pipeline 116; the cathode liquid is usually a 32% concentration of sodium hydroxide (NaOH) solution, which can be discharged through the cathode liquid pipeline 126.

[0063] The ion exchange method for hydrogen production is very complex and requires high control over process stability. In the prior art, PLC (Programmable Logic Controller) is usually used to control the electrolyzer, and DCS (Distributed Control System) is used to control the process flow of the entire plant. The main technical problems are as follows:

[0064] 1. The conventional control solution provided by DCS does not monitor the pressure difference between hydrogen and chlorine in the hydrogen production system, and can only ensure the normal operation of the system under normal conditions. However, when the hydrogen production system has abnormal conditions (for example, chlorine compressor failure, gas leakage, accidental tripping of the rectifier, etc.), the pressure balance between chlorine and hydrogen in the hydrogen production system is often destroyed, which will have a serious impact on production stability and equipment safety.

[0065] 2. In the existing control scheme, when it is judged that the hydrogen production system has an abnormal working condition, the direct current power supply of the electrolyzer is generally cut off to solve the problem. However, when the electrolyzer load is high, the sudden power outage may cause the pressure in the chlorine main pipe and the hydrogen main pipe to fluctuate violently, and cause fluctuations in the downstream process, affecting the stable operation of the whole plant.

[0066] In view of this, each embodiment of the present application provides an interlocking control scheme for a hydrogen production system, which adopts a multi-level interlocking control scheme to perform equipment adjustment on the hydrogen production system, thereby avoiding drastic fluctuations in hydrogen pressure and chlorine pressure during equipment adjustment, improving the equipment operation stability of the hydrogen production system, and ensuring safe production of the hydrogen production process.

[0067] In order to clearly understand the technical solution of the present application, the application scenarios of each embodiment of the present application are briefly described below.

[0068] The technical solutions of the embodiments of the present application can be applied to Figure 2 A hydrogen production system 200 is shown.

[0069] As shown in the figure, the hydrogen production system 200 includes a plurality of electrolytic cells 102a, 102b, ... 102n. The specific structural design of each electrolytic cell can refer to the above description for Figure 1 Relevant description content.

[0070] The hydrogen production system 200 includes a chlorine gas main pipe 203, a hydrogen gas main pipe 204 and a pure water main pipe 209 connected to each electrolytic cell 102a, 102b, ... 102n. Figure 1 The chlorine main pipe 203 can be connected to the chlorine outlet 114 of each electrolytic cell 102 to receive the chlorine generated by the reaction in each electrolytic cell 102; the hydrogen main pipe 204 can be connected to the hydrogen outlet 124 of each electrolytic cell 102 to receive the chlorine generated by the reaction in each electrolytic cell 102; the pure water main pipe 209 can be connected to the cathode chamber inlet 122 of each electrolytic cell 102 to provide pure water to the cathode chamber 120 of each electrolytic cell 102.

[0071] The hydrogen production system 200 also includes rectifiers 202a, 202b, ..., 202n connected to the electrolyzers 102a, 102b, ..., 102n. The electrolyzers and rectifiers connected to each other are in an interlocking control relationship, that is, when the rectifier (such as the rectifier 202a) is in a shutdown state, the electrolyzer 102a connected to the rectifier 202a will also be switched to the shutdown state accordingly, and vice versa.

[0072] Continue to refer Figure 2 The chlorine main pipe 203 is provided with a chlorine compressor 205 for compressing the chlorine in the chlorine main pipe 203 and then sending it to the chlorine tank 207. The hydrogen main pipe 204 is provided with a hydrogen compressor 206 for compressing the hydrogen in the hydrogen main pipe 204 and then sending it to the hydrogen tank 208.

[0073] Based on the above Figure 1 and Figure 2 In the application scenario shown, the present application proposes an interlocking control scheme for a hydrogen production system. The specific implementation of each embodiment of the present application will be described in detail below in conjunction with the accompanying drawings.

[0074] Interlocking control method for hydrogen production system

[0075] Figure 3 This is a processing flow chart of the interlocking control method of the hydrogen production system of the exemplary embodiment of the present application. As shown in the figure, the method 300 of this embodiment mainly includes:

[0076] Step 302: Obtain overall process parameters of the hydrogen production system and individual process parameters of each electrolyzer in the hydrogen production system.

[0077] The overall process parameters and individual process parameters of the hydrogen production system 200 can be sensed by setting corresponding sensors (eg, temperature sensors, pressure sensors, flow sensors, current sensors, etc.) in corresponding structural components.

[0078] In some embodiments, the overall process parameters of the hydrogen production system 200 may include the chlorine main pipe pressure of the chlorine main pipe 203, which is used to indicate the amount of chlorine produced by the hydrogen production system 200 per unit time; the hydrogen main pipe pressure of the hydrogen main pipe 204, which is used to indicate the amount of hydrogen produced by the hydrogen production system 200 per unit time; and the pure water pipeline flow of the pure water main pipe 209, which is used to indicate the amount of pure water input into the hydrogen production system 200 per unit time.

[0079] In some embodiments, the overall process parameters of the hydrogen production system 200 may further include: compressor operating parameters 2052 of the chlorine compressor 205 and compressor operating parameters 2062 of the hydrogen compressor 206 , which are used to identify the operating status of the chlorine compressor 205 or the hydrogen compressor 206 .

[0080] In some embodiments, the monomer process parameters of the electrolytic cell 102 may include the electrolytic cell operating parameters and the electrolytic cell temperature of the electrolytic cell 102, the rectifier operating parameters of the rectifier 202, the cathode liquid flow rate of the cathode liquid pipeline 126, and the anode liquid flow rate of the anode liquid pipeline 116. Among them, the electrolytic cell operating parameters are used to identify the operating state of the electrolytic cell 102, the electrolytic cell temperature is used to identify the temperature value in the electrolytic cell 102, the rectifier operating parameters are used to identify the operating state of the rectifier 202, the cathode liquid flow rate is used to identify the cathode liquid flow rate in the cathode liquid pipeline 126; and the anode liquid flow rate is used to identify the anode liquid flow rate in the anode liquid pipeline 116.

[0081] In some embodiments, the hydrogen production system 200 further includes a cathode liquid storage tank and an anode liquid storage tank (not shown), and the overall process parameters of the hydrogen production system 200 further include the cathode liquid reserves in the cathode liquid storage tank and the anode liquid reserves in the anode liquid storage tank.

[0082] Step 304: Execute a multi-stage interlocking control strategy of the hydrogen production system according to the overall process parameters of the hydrogen production system and the individual process parameters of each electrolyzer.

[0083] In some embodiments, the multi-stage interlocking control strategy for executing the hydrogen production system includes: responding to the judgment result that the overall process parameters meet the given low warning condition to reduce the electrical parameters of at least one electrolyzer 102; or responding to the judgment result that the individual process parameters of any one of the electrolyzers 102 meet the low warning condition, controlling the corresponding electrolyzer 102 to stop running; or responding to the judgment result that the overall process parameters or the individual process parameters of any one of the electrolyzers 102 meet the given high warning condition, controlling the hydrogen production system 200 to stop running.

[0084] In some embodiments, when any of the following judgment conditions is met, a judgment result that the overall process parameters meet the low warning condition can be obtained:

[0085] (1-1) If the hydrogen main pressure is higher than the given hydrogen pressure low warning value.

[0086] (1-2) If the pressure difference between the hydrogen main pipe pressure and the chlorine main pipe pressure is higher than the given pressure difference low warning value.

[0087] (1-3) If the pure water pipeline flow rate is lower than the given pure water flow low warning value.

[0088] In some embodiments, the electrical parameters of the electrolysis cell 102 may include an input current value.

[0089] In response to the judgment result that the overall process parameters meet the given low warning condition, the input current value of each electrolyzer 102 in the hydrogen production system 200 can be detected. According to a given adjustable current threshold, at least one electrolyzer 102 whose input current value is higher than the adjustable current threshold can be determined as a target electrolyzer 102, and the input current value of the target electrolyzer 102 can be lowered.

[0090] Specifically, when it is judged that the overall process parameters meet the low warning conditions, the input current value of each electrolytic cell 200 in the hydrogen production system 200 can be detected, and one or more electrolytic cells (such as electrolytic cell 102a) whose input current value is higher than the adjustable current threshold value are determined as target electrolytic cells. By lowering the input current value of the target electrolytic cell 102a (i.e., reducing the operating load of the target electrolytic cell), the intensity of the electrolysis reaction in the target electrolytic cell 102a is reduced, and the amount of chlorine and hydrogen produced in the target electrolytic cell 102a is also reduced accordingly. Therefore, the chlorine main pipe pressure in the chlorine main pipe 203 and the hydrogen main pipe pressure in the hydrogen main pipe 204 will also be reduced.

[0091] In some embodiments, the operating load of one target electrolyzer may be reduced each time, and the overall process parameters of the hydrogen production system may be rechecked. If it is again determined that the overall process parameters of the hydrogen production system meet the low warning conditions, the operating load of the next target electrolyzer may be reduced, and so on, until it is detected that the overall process parameters of the hydrogen production system have returned to normal operating conditions, or there is no target electrolyzer in the hydrogen production system 200 whose input current value is higher than the adjustable current threshold.

[0092] In some embodiments, for any target electrolytic cell among the electrolytic cells 102, when any of the following judgment conditions is met, a judgment result that the monomer process parameter of the target electrolytic cell meets the low warning condition can be obtained:

[0093] (2-1) If, based on the rectifier operating parameters of the target electrolytic cell, an analysis result is obtained that the rectifier corresponding to the target electrolytic cell is in a shutdown state.

[0094] (2-2) If, based on the electrolytic cell operating parameters of the target electrolytic cell, an analysis result is obtained that the target electrolytic cell is in a shutdown state.

[0095] (2-3) If the cathode liquid flow rate of the target electrolytic cell is lower than the given cathode liquid flow rate warning value.

[0096] (2-4) If the anolyte flow rate of the target electrolytic cell is lower than the given anolyte flow rate warning value.

[0097] (2-5) If the electrolytic cell temperature of the target electrolytic cell is higher than the given low temperature warning value.

[0098] In some embodiments, a judgment result that the overall process parameter or the monomer process parameter of any electrolytic cell meets a given high warning condition can be obtained when any of the following judgment conditions are met:

[0099] (3-1) If the hydrogen main pressure is higher than a given hydrogen pressure high warning value, wherein the hydrogen pressure high warning value is higher than the hydrogen pressure low warning value.

[0100] (3-2) If the pressure difference between the hydrogen main pipe pressure and the chlorine main pipe pressure is higher than a given pressure difference high warning value, wherein the pressure difference high warning value is higher than the pressure difference low warning value.

[0101] (3-3) If, based on the operating parameters of the rectifier of each electrolytic cell, the analysis result is obtained that the rectifier of each electrolytic cell is in a shutdown state.

[0102] (3-4) If, based on the electrolytic cell operating parameters of each electrolytic cell, the analysis result is obtained that each electrolytic cell is in a shutdown state.

[0103] (3-5) If the cathode liquid reserves are lower than the given cathode liquid reserves warning value or the anode liquid reserves are lower than the given anode liquid reserves warning value.

[0104] (3-6) If, based on the compressor operating parameters, an analysis result is obtained that the chlorine compressor 205 or the hydrogen compressor 206 is in a shutdown state.

[0105] In summary, the interlocking control method of the hydrogen production system in this embodiment adopts a multi-level interlocking control strategy to execute equipment adjustment of the hydrogen production system, thereby avoiding the impact on the operating stability of the hydrogen production system due to drastic fluctuations in hydrogen pressure and chlorine pressure during the equipment adjustment process, thereby ensuring the safe production of the hydrogen production system.

[0106] Specifically, according to the given low warning conditions and high warning conditions, the overall process parameters and individual process parameters of the hydrogen production system, the operation stability of the hydrogen production equipment is judged and analyzed. When it is judged that the overall process parameters of the hydrogen production equipment exceed the normal range (that is, the overall process parameters meet the low warning conditions), the first-level interlocking control strategy can be triggered to reduce the input current value of each electrolyzer in the hydrogen production system, thereby reducing the downstream chlorine and hydrogen processing load; when it is judged that the individual process parameters affect the stable operation of a single electrolyzer (that is, the individual process parameters of the electrolyzer meet the low warning conditions), the second-level interlocking control strategy is triggered to implement shutdown processing for the electrolyzer in an unstable operating state; when it is judged that the overall process parameters or the individual process parameters affect the overall operation stability of the hydrogen production system, the third-level interlocking control strategy is triggered to control the hydrogen production system to perform a shutdown operation.

[0107] It can be seen that the present embodiment utilizes an interlocking control strategy. When an abnormal operating condition occurs in the hydrogen production system, the electrolyzer is first subjected to load reduction treatment, and then the electrolyzer after load reduction treatment is shut down, so as to replace the method of directly cutting off the DC power supply to the electrolyzer in the traditional technology. This can effectively avoid drastic fluctuations in hydrogen pressure and chlorine pressure during equipment adjustment, thereby improving the equipment operation stability of the hydrogen production system and ensuring the production safety of the hydrogen production process.

[0108] Interlocking control device for hydrogen production system

[0109] Figure 4 This is a structural block diagram of an interlocking control device 400 of an exemplary hydrogen production system of the present application. As shown in the figure, the device 400 of this embodiment includes:

[0110] An acquisition module 402 is used to acquire the overall process parameters of the hydrogen production system 200 and the individual process parameters of each electrolyzer 102 in the hydrogen production system 200;

[0111] The control module 404 is used to execute the multi-stage interlocking control strategy of the hydrogen production system 200 according to the overall process parameters of the hydrogen production system 200 and the individual process parameters of each electrolyzer 102, and includes:

[0112] In response to the judgment result that the overall process parameters meet the given low warning conditions, the electrical parameters of at least one electrolyzer 102 are reduced; in response to the judgment result that the individual process parameters of any one of the electrolyzers 102 meet the low warning conditions, the operation of any one of the electrolyzers 102 is controlled to stop; in response to the judgment result that the overall process parameters or the individual process parameters of any one of the electrolyzers 102 meet the given high warning conditions, the hydrogen production system 200 is controlled to stop operating.

[0113] In some embodiments, the hydrogen production system 200 includes a chlorine main pipe 203, a hydrogen main pipe 204 and a pure water main pipe 209 connected to each electrolyzer 102; the overall process parameters of the hydrogen production system 200 include the chlorine main pipe pressure of the chlorine main pipe 203, the hydrogen main pipe pressure of the hydrogen main pipe 204, and the pure water pipeline flow of the pure water main pipe 209.

[0114] The control module 404 is also used to obtain a judgment result that the overall process parameter meets the low warning condition when any of the following judgment conditions is met:

[0115] If the hydrogen main pipe pressure is higher than a given hydrogen pressure low warning value;

[0116] If the pressure difference between the hydrogen main pipe pressure and the chlorine main pipe pressure is higher than a given pressure difference low warning value;

[0117] If the pure water pipeline flow is lower than a given pure water flow low warning value.

[0118] In some embodiments, the electrical parameters include input current values; the control module 404 is also used to: in response to the judgment result that the overall process parameters meet the given low warning condition, detect the input current value of each electrolytic cell 102; according to a given adjustable current threshold, determine at least one electrolytic cell 102 whose input current value is higher than the adjustable current threshold as the target electrolytic cell 102; and reduce the input current value of the target electrolytic cell 102.

[0119] In some embodiments, each electrolytic cell 102 is respectively connected to a rectifier 202, a cathode liquid pipeline 126, and an anode liquid pipeline 116; the monomer process parameters of any electrolytic cell include the electrolytic cell operating parameters and the electrolytic cell temperature of the electrolytic cell, the rectifier operating parameters of the rectifier 202, the cathode liquid flow rate of the cathode liquid pipeline 126, and the anode liquid flow rate of the anode liquid pipeline 116.

[0120] In some embodiments, the control module 404 is further used to: for any target electrolytic cell among the electrolytic cells 102, when any of the following judgment conditions is met, a judgment result can be obtained that the monomer process parameter of the target electrolytic cell meets the low warning condition:

[0121] If, according to the rectifier operating parameters of the target electrolytic cell, an analysis result is obtained that the rectifier corresponding to the target electrolytic cell is in a shutdown state;

[0122] If, according to the electrolytic cell operating parameters of the target electrolytic cell, an analysis result is obtained that the target electrolytic cell is in a shutdown state;

[0123] If the cathode liquid flow rate of the target electrolytic cell is lower than a given cathode liquid flow rate warning value;

[0124] If the anolyte flow rate of the target electrolytic cell is lower than a given anolyte flow rate warning value;

[0125] If the electrolytic cell temperature of the target electrolytic cell is higher than a given low temperature warning value.

[0126] In some embodiments, the control module 404 is used to obtain a judgment result that the overall process parameter or a single process parameter of any electrolytic cell 102 meets a given high warning condition when any of the following judgment conditions are met:

[0127] If the hydrogen main pipe pressure is higher than a given hydrogen pressure high warning value, wherein the hydrogen pressure high warning value is higher than the hydrogen pressure low warning value;

[0128] If the pressure difference between the hydrogen main pipe pressure and the chlorine main pipe pressure is higher than a given pressure difference high warning value, wherein the pressure difference high warning value is higher than the pressure difference low warning value;

[0129] If, according to the operating parameters of the rectifier of each electrolytic cell 102, an analysis result is obtained that the rectifier 202 of each electrolytic cell 102 is in a shutdown state;

[0130] According to the electrolytic cell operating parameters of each electrolytic cell 102 , an analysis result is obtained that each electrolytic cell 102 is in a shutdown state.

[0131] In some embodiments, the hydrogen production system 200 includes a cathode liquid storage tank and an anode liquid storage tank; the overall process parameters of the hydrogen production system 200 include the cathode liquid reserve in the cathode liquid storage tank and the anode liquid reserve in the anode liquid storage tank. And wherein, the control module 404 is also used for: if the cathode liquid reserve is lower than a given cathode liquid reserve warning value or the anode liquid reserve is lower than a given anode liquid reserve warning value, obtaining a judgment result that the overall process parameters of the hydrogen production system 200 meet the high warning condition.

[0132] In some embodiments, the hydrogen production system 200 includes a chlorine compressor 205 arranged in the chlorine main pipe 203, and a hydrogen compressor 206 arranged in the hydrogen main pipe 204; the overall process parameters include compressor operating parameters of the chlorine compressor 205 and the hydrogen compressor 206; and wherein, the control module 404 is also used for: if according to the compressor operating parameters, an analysis result that the chlorine compressor 205 or the hydrogen compressor 206 is in a shutdown state is obtained, a judgment result that the overall process parameters meet the high warning condition is obtained.

[0133] Electronic devices

[0134] Figure 5 is a schematic diagram of an electronic device provided in an embodiment of the present application. The specific embodiment of the present application does not limit the specific implementation of the electronic device. Figure 5 The electronic device 500 provided in the embodiment of the present application includes: a processor 502, a communication interface 504, a memory 506, and a bus 508. Among them:

[0135] The processor 502 , the communication interface 504 , and the memory 506 communicate with each other via a bus 508 .

[0136] The communication interface 504 is used to communicate with other electronic devices or servers.

[0137] The processor 502 is used to execute the program 510, and specifically can execute the relevant steps in the above-mentioned embodiment of the interlocking control method of the hydrogen production system.

[0138] Specifically, the program 510 may include program codes, which include computer operation instructions.

[0139] The processor 502 may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application. The one or more processors included in the smart device may be processors of the same type, such as one or more CPUs; or processors of different types, such as one or more CPUs and one or more ASICs.

[0140] The memory 506 is used to store the program 510. The memory 506 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0141] The program 510 may be specifically used to enable the processor 502 to execute the interlocking control method of the hydrogen production system in any of the aforementioned embodiments.

[0142] The specific implementation of each step in program 510 can refer to the corresponding steps and corresponding descriptions in the unit in the above-mentioned interlocking control method embodiment of the hydrogen production system, which will not be repeated here. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described equipment and modules can refer to the corresponding process description in the above-mentioned method embodiment, which will not be repeated here.

[0143] Computer readable storage medium

[0144] The present application also provides a computer-readable storage medium storing instructions for causing a machine to execute the interlocking control method of the hydrogen production system as described herein. Specifically, a system or device equipped with a storage medium may be provided, on which a software program code for implementing the functions of any of the above-mentioned embodiments is stored, and a computer (or CPU or MPU) of the system or device reads and executes the program code stored in the storage medium.

[0145] In this case, the program code read from the storage medium itself can implement the function of any one of the above embodiments, so the program code and the storage medium storing the program code constitute part of the present application.

[0146] The storage medium embodiments for providing the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), a magnetic tape, a non-volatile memory card, and a ROM. Alternatively, the program code can be downloaded from a server computer by a communication network.

[0147] Computer program product

[0148] An embodiment of the present application also provides a computer program product, including computer instructions, which instruct a computing device to perform any corresponding operation in the above-mentioned multiple method embodiments.

[0149] It should be pointed out that, according to the needs of implementation, the various components / steps described in the embodiments of the present application can be split into more components / steps, or two or more components / steps or partial operations of components / steps can be combined into new components / steps to achieve the purpose of the embodiments of the present application.

[0150] The above-mentioned method according to the embodiment of the present application can be implemented in hardware, firmware, or implemented as software or computer code that can be stored in a recording medium (such as a CD ROM, RAM, floppy disk, hard disk or magneto-optical disk), or implemented as a computer code originally stored in a remote recording medium or a non-temporary machine-readable medium downloaded through a network and to be stored in a local recording medium, so that the method described herein can be stored in such software processing on a recording medium using a general-purpose computer, a special-purpose processor or programmable or special-purpose hardware (such as an ASIC or FPGA). It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component (e.g., RAM, ROM, flash memory, etc.) that can store or receive software or computer code, and when the software or computer code is accessed and executed by a computer, a processor or hardware, the method described herein is implemented. In addition, when a general-purpose computer accesses the code for implementing the method shown here, the execution of the code converts the general-purpose computer into a special-purpose computer for executing the method shown here.

[0151] It should be noted that not all steps and modules in the above-mentioned processes and system structure diagrams are necessary, and some steps or modules can be ignored according to actual needs. The execution order of each step is not fixed and can be adjusted as needed. The system structure described in the above-mentioned embodiments can be a physical structure or a logical structure, that is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or some components in multiple independent devices may be implemented together.

[0152] Nouns and pronouns relating to persons in this patent application are not limited to a specific gender.

[0153] In the above embodiments, the hardware module can be implemented mechanically or electrically. For example, a hardware module can include permanent dedicated circuits or logic (such as special processors, FPGA or ASIC) to complete the corresponding operation. The hardware module can also include programmable logic or circuits (such as general-purpose processors or other programmable processors), which can be temporarily set by software to complete the corresponding operation. The specific implementation method (mechanical method, or dedicated permanent circuit, or temporarily set circuit) can be determined based on cost and time considerations.

[0154] The present invention has been shown and described in detail above through the accompanying drawings and preferred embodiments. However, the present invention is not limited to these disclosed embodiments. Based on the above multiple embodiments, those skilled in the art can know that the code review methods in the above different embodiments can be combined to obtain more embodiments of the present invention, and these embodiments are also within the protection scope of the present invention.

Claims

1. An interlocking control method (300) for a hydrogen production system, the method comprising: Obtaining overall process parameters of the hydrogen production system (200) and individual process parameters (302) of each electrolyzer (102) in the hydrogen production system (200); According to the overall process parameters of the hydrogen production system (200) and the individual process parameters of each electrolyzer (102), a multi-stage interlocking control strategy (304) of the hydrogen production system (200) is executed, which includes: In response to a determination that the overall process parameter satisfies a given low warning condition, lowering an electrical parameter of at least one electrolytic cell (102); In response to a judgment result that a monomer process parameter of any one of the electrolytic cells (102) meets the low warning condition, controlling the any one of the electrolytic cells (102) to stop operating; In response to a judgment result that the overall process parameter or a single process parameter of any one of the electrolytic cells (102) meets a given high warning condition, the hydrogen production system (200) is controlled to stop operating.

2. The interlocking control method according to claim 1, wherein: The hydrogen production system (200) includes a chlorine main pipe (203), a hydrogen main pipe (204) and a pure water main pipe (209) connected to each electrolyzer (102); The overall process parameters of the hydrogen production system (200) include the chlorine main pipe pressure of the chlorine main pipe (203), the hydrogen main pipe pressure of the hydrogen main pipe (204), and the pure water pipeline flow rate of the pure water main pipe (209); Wherein, when any of the following judgment conditions is met, a judgment result that the overall process parameter meets the low warning condition can be obtained: If the hydrogen main pressure is higher than a given hydrogen pressure low warning value; If the pressure difference between the hydrogen main pipe pressure and the chlorine main pipe pressure is higher than a given pressure difference low warning value; If the pure water pipeline flow is lower than a given pure water flow low warning value.

3. The interlocking control method according to claim 1 or 2, wherein: The electrical parameters include input current value; And wherein, in response to the judgment result that the overall process parameter meets the given low warning condition, lowering the electrical parameters of at least one electrolytic cell (102) comprises: In response to a judgment result that the overall process parameter meets a given low warning condition, detecting an input current value of each electrolytic cell (102); According to a given adjustable current threshold, at least one electrolytic cell (102) having an input current value higher than the adjustable current threshold is determined as a target electrolytic cell; The input current value of the target electrolytic cell is reduced.

4. The interlocking control method according to claim 2, wherein: Each electrolytic cell (102) is respectively connected to a rectifier (202), a cathode liquid pipeline (126), and an anode liquid pipeline (116); The monomer process parameters of any one of the electrolytic cells include the electrolytic cell operating parameters and the electrolytic cell temperature of the electrolytic cell, the rectifier operating parameters of the rectifier (202), the cathode liquid flow rate of the cathode liquid pipeline (126), and the anode liquid flow rate of the anode liquid pipeline (116); And wherein, for any one target electrolytic cell among the electrolytic cells (102), when any one of the following judgment conditions is met, a judgment result that the monomer process parameter of the target electrolytic cell meets the low warning condition can be obtained: If, according to the rectifier operating parameters of the target electrolytic cell, an analysis result is obtained that the rectifier corresponding to the target electrolytic cell is in a shutdown state; If, according to the electrolytic cell operating parameters of the target electrolytic cell, an analysis result is obtained that the target electrolytic cell is in a shutdown state; If the cathode liquid flow rate of the target electrolytic cell is lower than a given cathode liquid flow rate warning value; If the anolyte flow rate of the target electrolytic cell is lower than a given anolyte flow rate warning value; If the electrolytic cell temperature of the target electrolytic cell is higher than a given low temperature warning value.

5. The interlocking control method according to claim 4, wherein: In the case where any one of the following judgment conditions is met, a judgment result can be obtained that the overall process parameter or the monomer process parameter of any one of the electrolytic cells (102) meets a given high warning condition: If the hydrogen main pipe pressure is higher than a given hydrogen pressure high warning value, wherein the hydrogen pressure high warning value is higher than the hydrogen pressure low warning value; If the pressure difference between the hydrogen main pipe pressure and the chlorine main pipe pressure is higher than a given pressure difference high warning value, wherein the pressure difference high warning value is higher than the pressure difference low warning value; If, based on the operating parameters of the rectifier of each electrolytic cell (102), an analysis result is obtained that the rectifier (202) of each electrolytic cell (102) is in a shutdown state; According to the electrolytic cell operating parameters of each electrolytic cell (102), an analysis result is obtained that each electrolytic cell (102) is in a shutdown state.

6. The interlocking control method according to claim 5, wherein: The hydrogen production system (200) comprises a cathode liquid storage tank and an anode liquid storage tank; The overall process parameters of the hydrogen production system (200) include the cathode liquid reserve in the cathode liquid storage tank and the anode liquid reserve in the anode liquid storage tank; And wherein, the method further comprises: If the cathode liquid reserve is lower than a given cathode liquid reserve warning value or the anode liquid reserve is lower than a given anode liquid reserve warning value, a judgment result is obtained that the overall process parameters of the hydrogen production system (200) meet the high warning condition.

7. The interlocking control method according to claim 1, 5 or 6, wherein: The hydrogen production system (200) comprises a chlorine compressor (205) arranged in the chlorine main pipe (203) and a hydrogen compressor (206) arranged in the hydrogen main pipe (204); The overall process parameters include: compressor operating parameters of the chlorine compressor (205) and the hydrogen compressor (206); And wherein, the method further comprises: If, based on the compressor operating parameters, an analysis result is obtained that the chlorine compressor (205) or the hydrogen compressor (206) is in a shutdown state, a judgment result is obtained that the overall process parameters meet the high warning condition.

8. An interlocking control device (400) for a hydrogen production system, the device comprising: An acquisition module (402) for acquiring overall process parameters of the hydrogen production system (200) and individual process parameters of each electrolyzer (102) in the hydrogen production system (200); A control module (404) is used to execute a multi-stage interlocking control strategy of the hydrogen production system (200) according to the overall process parameters of the hydrogen production system (200) and the individual process parameters of each electrolyzer (102), comprising: In response to a determination that the overall process parameter satisfies a given low warning condition, lowering an electrical parameter of at least one electrolytic cell (102); In response to a judgment result that a monomer process parameter of any one of the electrolytic cells (102) meets the low warning condition, controlling the any one of the electrolytic cells (102) to stop operating; In response to a judgment result that the overall process parameter or a single process parameter of any one of the electrolytic cells (102) meets a given high warning condition, the hydrogen production system (200) is controlled to stop operating.

9. An electronic device (500), comprising: A processor (502), a communication interface (504), a memory (506) and a communication bus (508), wherein the processor (502), the communication interface (504) and the memory (506) communicate with each other via the communication bus (508); The memory (506) is used to store at least one executable instruction, and the executable instruction enables the processor (502) to perform operations corresponding to the interlocking control method of the hydrogen production system as described in any one of claims 1 to 7. 10 . A computer-readable storage medium having computer instructions stored thereon, wherein when the computer instructions are executed by a processor, the processor is enabled to execute the interlocking control method for a hydrogen production system according to claim 1 .

11. A computer program product, comprising computer instructions, wherein the computer instructions instruct a computing device to execute operations corresponding to the interlocking control method for a hydrogen production system according to any one of claims 1 to 7.

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