Tank module structure of ALK electrolytic cell and control method and system of tank module

Abstract

The invention discloses a cell module structure of an ALK electrolytic cell and a control method and system.The cell module structure is characterized in that one end of an oxygen pilot bottle is connected with the electrolytic cell through an oxygen pressure pipeline, and the other end of the oxygen pilot bottle is connected with an oxygen separator through an oxygen separator pressure inlet pilot bottle pipeline; the other end of the oxygen pilot bottle is connected with the outside through an oxygen pilot bottle pressure relief pipeline; one end of the hydrogen pilot bottle is connected with the electrolytic cell through a hydrogen pressure pipeline, the other end of the hydrogen pilot bottle is connected with the hydrogen separator through a hydrogen separator pressure pilot bottle inlet pipeline, and the other end of the hydrogen pilot bottle is connected with the outside through a hydrogen pilot bottle pressure relief pipeline; and the valves are respectively arranged on different pipelines and are used for controlling the communication state of each pipeline. The cell module structure constructed by the hydrogen-oxygen pilot bottle and a plurality of pipelines is used for isolating the electrolytic cell which does not need to be started at low power, so that independent operation and shutdown operation of the AKL single-cell module are realized, and the service life of the ALK electrolytic cell is prolonged.

Description

Technical Field

[0001] This invention relates to the field of hydrogen production technology, and in particular to a cell module structure, cell module control method and system for an ALK electrolyzer. Background Technology

[0002] With the development of water electrolysis hydrogen production technology, the large-scale and intensive design of ALK water electrolysis hydrogen production equipment has become a focus of researchers. Currently, many manufacturers choose to use a single BOP system to support multiple electrolyzers, employing a simultaneous start-up and shutdown control scheme for multiple electrolyzers to reduce costs and increase the hydrogen production per unit. Traditional one-to-many systems can reduce system costs, have a high degree of automation but low safety, and are difficult to control independently of each unit during operation. For example, when only one electrolyzer is set to operate, the other unpowered electrolyzers still need to withstand separator pressure; when one electrolyzer malfunctions, the entire system must be shut down for maintenance and repair. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of existing one-to-many hydrogen production system electrolyzers that cannot achieve independent operation and shutdown, and to provide an ALK electrolyzer module structure, a module control method and system.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] In a first aspect, the present invention provides a cell module structure for an ALK electrolytic cell, the cell module structure comprising:

[0006] The hydrogen pilot cylinder is connected to the oxygen pilot cylinder via a pressure balancing line.

[0007] One end of the oxygen pilot cylinder is connected to the electrolytic cell via an oxygen pressure pipeline, the other end of the oxygen pilot cylinder is connected to the oxygen separator via an oxygen separator pressure inlet pilot cylinder pipeline, and the other end of the oxygen pilot cylinder is connected to the outside via an oxygen pilot cylinder pressure relief pipeline.

[0008] One end of the hydrogen pilot cylinder is connected to the electrolytic cell via a hydrogen pressure pipeline, the other end of the hydrogen pilot cylinder is connected to the hydrogen separator via a hydrogen separator pressure inlet pilot cylinder pipeline, and the other end of the hydrogen pilot cylinder is connected to the outside via a hydrogen pilot cylinder pressure relief pipeline.

[0009] The level gauges are respectively installed on both sides of the oxygen pilot cylinder and the hydrogen pilot cylinder, and are used to determine whether the pressure on both sides of the oxygen pilot cylinder and the hydrogen pilot cylinder is balanced based on the change in liquid level.

[0010] Each of the valves is installed on a different pipeline and is used to control the connection status of each pipeline.

[0011] Preferably, the cell module structure further includes: an oxygen production pipeline for the electrolyzer, a hydrogen production pipeline for the electrolyzer, and an alkaline solution inlet pipeline for the electrolyzer;

[0012] The oxygen produced by the electrolytic cell enters the oxygen separator through the electrolytic cell oxygen production pipeline.

[0013] The hydrogen produced by the electrolyzer enters the hydrogen separator through the hydrogen production pipeline of the electrolyzer.

[0014] The alkaline solutions separated by the oxygen separator and the hydrogen separator are mixed and flow into the electrolytic cell through the alkaline solution inlet pipeline.

[0015] Preferably, the valve includes: a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, and a seventh valve;

[0016] The first valve is located on the oxygen separator pressure inlet pilot bottle line, the second valve is located on the oxygen pilot bottle pressure relief line, the third valve is located on the hydrogen separator pressure inlet pilot bottle line, the fourth valve is located on the hydrogen pilot bottle pressure relief line, the fifth valve is located on the pressure balance line, the sixth valve is located on the oxygen pressure line, and the seventh valve is located on the hydrogen pressure line.

[0017] Preferably, the valve further includes: an eighth valve, a ninth valve, a tenth valve, an eleventh valve, and a twelfth valve;

[0018] The eighth valve is located on the oxygen production pipeline of the electrolyzer, the ninth valve is located on the hydrogen production pipeline of the electrolyzer, the tenth valve is located on the first drain pipe connected to the oxygen pilot cylinder, the eleventh valve is located on the second drain pipe connected to the hydrogen pilot cylinder, and the twelfth valve is located on the alkali inlet pipeline of the electrolyzer.

[0019] In a second aspect, the present invention provides a method for controlling a cell module, which is implemented using the cell module structure of the ALK electrolytic cell described in any one of the first aspects, the control method comprising:

[0020] Open the pressure balance line, oxygen pressure line and hydrogen pressure line to connect the oxygen pilot cylinder, hydrogen pilot cylinder and electrolyzer.

[0021] Oxygen in the oxygen separator is introduced into the pilot bottle line by the oxygen separator pressure, and hydrogen in the hydrogen separator is introduced into the pilot bottle line by the hydrogen separator pressure and flows into the electrolytic cell at a preset pressure.

[0022] Start the alkali inlet pipeline, oxygen production pipeline, and hydrogen production pipeline of the electrolyzer;

[0023] Close the oxygen pressure line and the hydrogen pressure line so that the oxygen pilot bottle, the hydrogen pilot bottle and the electrolyzer are in a non-connected state;

[0024] The circulating pump on the alkali inlet pipeline of the electrolytic cell is driven to operate, thereby controlling the electrolytic cell to be in working condition.

[0025] Preferably, after the step of closing the oxygen pressure line and the hydrogen pressure line, the method further includes:

[0026] After the alkaline solution in the oxygen pilot cylinder and the hydrogen pilot cylinder is discharged to the preset liquid level through the drain pipe, the pressure balance pipeline is closed.

[0027] Preferably, the control method further includes:

[0028] The circulating pump on the alkali inlet pipeline of the electrolyzer is stopped, and the pressure inlet pipeline of the oxygen separator, the pressure inlet pipeline of the hydrogen separator, the oxygen production pipeline of the electrolyzer, and the alkali inlet pipeline of the electrolyzer are closed, so that the oxygen separator, the hydrogen separator and the electrolyzer are in a non-connected state.

[0029] Open the pressure balance line, the oxygen pressure line, and the hydrogen pressure line so that the oxygen pilot bottle, the hydrogen pilot bottle, and the electrolyzer are in a connected state.

[0030] Open the oxygen pilot bottle pressure relief line and the hydrogen pilot bottle pressure relief line to allow the electrolyzer to depressurize smoothly;

[0031] When the pressure of the electrolytic cell drops to a preset threshold, the electrolytic cell is controlled to be in a shutdown state.

[0032] Thirdly, the present invention provides a control system for a slot module, characterized in that the control system includes:

[0033] The first start-up module is used to open the pressure balance line, oxygen pressure line and hydrogen pressure line so that the oxygen pilot bottle, hydrogen pilot bottle and electrolyzer are in a connected state.

[0034] The drive module is used to drive oxygen in the oxygen separator to enter the pilot bottle line under oxygen separator pressure and hydrogen in the hydrogen separator to enter the pilot bottle line under hydrogen separator pressure and flow into the electrolytic cell at a preset pressure.

[0035] The second startup module is used to start the alkali inlet pipeline, the oxygen production pipeline, and the hydrogen production pipeline of the electrolyzer.

[0036] The first closing module is used to close the oxygen pressure line and the hydrogen pressure line so that the oxygen pilot bottle, the hydrogen pilot bottle and the electrolyzer are in a non-connected state.

[0037] The first control module is used to drive the circulation pump on the alkali inlet pipeline of the electrolytic cell to operate and control the electrolytic cell to be in working state.

[0038] Preferably, the control system further includes:

[0039] The draining module is used to discharge the alkaline solution in the oxygen pilot bottle and the hydrogen pilot bottle to a preset liquid level through the drain pipe, and then control the closure of the pressure balance pipeline.

[0040] Preferably, the control system further includes:

[0041] The second closing module is used to drive the circulation pump on the alkali inlet pipeline of the electrolyzer to stop, and close the oxygen separator pressure inlet pilot bottle pipeline, the hydrogen separator pressure inlet pilot bottle pipeline, the electrolyzer oxygen production pipeline and the electrolyzer alkali inlet pipeline, so that the oxygen separator, the hydrogen separator and the electrolyzer are in a non-connected state.

[0042] The third start-up module is used to open the pressure balance line, the oxygen pressure line and the hydrogen pressure line so that the oxygen pilot bottle, the hydrogen pilot bottle and the electrolyzer are in a connected state.

[0043] The fourth start-up module is used to open the oxygen pilot bottle pressure relief line and the hydrogen pilot bottle pressure relief line so that the electrolyzer can be depressurized smoothly.

[0044] The second control module is used to control the electrolytic cell to be in a shutdown state when the pressure of the electrolytic cell drops to a preset threshold.

[0045] Fourthly, the present invention provides an electronic device including a processor, a memory, and a computer program of a computer stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the control method of the slot module as described in any of the second aspects.

[0046] Fifthly, the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the control method for the slot module as described in any of the second aspects.

[0047] The positive and progressive effects of this invention are as follows: This invention provides a cell module structure, cell module control method, and system for an ALK electrolyzer. The cell module structure, constructed using an oxygen pilot bottle, a hydrogen pilot bottle, and several pipelines, isolates electrolyzers that do not require startup at low power, enabling independent operation and shutdown of individual ALK cell modules, thus extending the lifespan of the ALK electrolyzer. If a cell module fails, the corresponding electrolyzer can be independently shut down, ensuring the stability of hydrogen production in the system. Relying on the oxygen and hydrogen pilot bottles and the independent pressure relief method, the electrolyzer can be smoothly depressurized after shutdown or failure shutdown, reducing damage to the electrolyzer. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the cell module structure of the ALK electrolytic cell in Embodiment 1 of the present invention.

[0049] Figure 2 This is a schematic diagram illustrating the application of the cell module structure of the ALK electrolytic cell in Embodiment 1 of the present invention.

[0050] Figure 3 This is a first flowchart of the control method for the slot module in Embodiment 2 of the present invention.

[0051] Figure 4 This is a second flowchart of the control method for the slot module in Embodiment 2 of the present invention.

[0052] Figure 5 This is the third flowchart of the control method for the slot module in Embodiment 2 of the present invention.

[0053] Figure 6 This is a schematic diagram of the first module of the control system of the slot module in Embodiment 3 of the present invention.

[0054] Figure 7 This is a schematic diagram of the second module of the control system of the slot module in Embodiment 3 of the present invention.

[0055] Figure 8 This is a schematic diagram of the hardware structure of the electronic device according to Embodiment 4 of the present invention. Detailed Implementation

[0056] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0057] Example 1

[0058] This embodiment provides a cell module structure for an ALK electrolytic cell, such as... Figure 1 As shown, the tank module structure includes: oxygen pilot cylinder 11, hydrogen pilot cylinder 12, level gauge 13, several pipelines and several valves;

[0059] Hydrogen pilot cylinder 11 is connected to oxygen pilot cylinder 12 via a pressure balancing line;

[0060] One end of the oxygen pilot cylinder 11 is connected to the electrolytic cell 20 through an oxygen pressure pipeline, the other end of the oxygen pilot cylinder 11 is connected to the oxygen separator through an oxygen separator pressure inlet pilot cylinder pipeline, and the other end of the oxygen pilot cylinder 11 is connected to the outside through an oxygen pilot cylinder pressure relief pipeline.

[0061] One end of the hydrogen pilot cylinder 12 is connected to the electrolyzer 20 through a hydrogen pressure pipeline, the other end of the hydrogen pilot cylinder 12 is connected to the hydrogen separator through a hydrogen separator pressure inlet pilot cylinder pipeline, and the other end of the hydrogen pilot cylinder 12 is connected to the outside through a hydrogen pilot cylinder pressure relief pipeline.

[0062] The level gauges are respectively installed on both sides of the oxygen pilot cylinder 11 and the hydrogen pilot cylinder 12 to determine whether the pressure on both sides of the oxygen pilot cylinder 11 and the hydrogen pilot cylinder 12 is balanced based on the changes in the liquid level.

[0063] Each valve is installed on a different pipeline to control the connection status of each pipeline.

[0064] Specifically, the oxygen pilot cylinder 11 is connected to the electrolytic cell via an oxygen pressure pipeline, and the hydrogen pilot cylinder 12 is connected to the electrolytic cell via a hydrogen pressure pipeline; two level gauges 13 are respectively installed on both sides of the oxygen pilot cylinder 11 and the hydrogen pilot cylinder 12 to ensure the level difference between the two level gauges according to the liquid level changes.

[0065] The pressure in the oxygen separator enters the oxygen pilot cylinder 11 through the oxygen separator pressure inlet pilot cylinder pipeline, and then the pressure in the oxygen pilot cylinder 11 enters the electrolyzer 20. Similarly, the pressure in the hydrogen separator enters the hydrogen pilot cylinder 12 through the hydrogen separator pressure inlet pilot cylinder pipeline, and then the pressure in the oxygen pilot cylinder 12 enters the electrolyzer 20. In this design, the hydrogen-oxygen separator can be simultaneously connected to one or more independent cell module structures consisting of one oxygen pilot cylinder 11, one hydrogen pilot cylinder 12, two level gauges 13, several pipelines, several valves, and one electrolyzer. First, the electrolyzer is pressurized using the hydrogen pilot cylinder 11 and the oxygen pilot cylinder 12, and then the ALK electrolyzer system is controlled. If one of the electrolyzers malfunctions, it can be actively shut down, and the hydrogen-oxygen pilot cylinders can be used as a buffer to depressurize and isolate it.

[0066] The opening and closing of the pressure balance line, oxygen pressure line, hydrogen pressure line, oxygen separator pressure inlet pilot bottle line, and hydrogen separator pressure inlet pilot bottle line are controlled by valves in a set sequence. Compared to the traditional one-to-many ALK system that requires all electrolyzers to be started simultaneously, this solution isolates electrolyzers that do not need to be started at low power, thus extending the life of the ALK electrolyzers.

[0067] By connecting the oxygen pilot cylinder and the hydrogen pilot cylinder with the external environment through the oxygen pilot cylinder pressure relief pipeline and the hydrogen pilot cylinder pressure relief pipeline, this solution relies on the hydrogen pilot cylinder and the independent pressure relief method to smoothly relieve pressure on the electrolyzer after shutdown or failure shutdown, thereby reducing damage to the electrolyzer.

[0068] In this scheme, a modular structure consisting of an oxygen pilot bottle, a hydrogen pilot bottle, and several pipelines is used to isolate electrolyzers that do not need to be started at low power, enabling independent operation and shutdown of AKL single-cell modules and extending the life of ALK electrolyzers. If a cell module fails, the corresponding electrolyzer can be shut down independently to ensure the stability of hydrogen production in the system.

[0069] In one feasible solution, the cell module structure also includes: an oxygen production pipeline for the electrolyzer, a hydrogen production pipeline for the electrolyzer, and an alkali inlet pipeline for the electrolyzer;

[0070] The oxygen produced by the electrolytic cell enters the oxygen separator through the electrolytic cell oxygen production pipeline;

[0071] The hydrogen produced by the electrolyzer enters the hydrogen separator through the electrolyzer hydrogen production pipeline;

[0072] The alkaline solutions separated by the oxygen separator and hydrogen separator flow into the electrolytic cell through the alkaline solution inlet pipeline.

[0073] In this scheme, the alkaline solutions separated by the oxygen separator and hydrogen separator are mixed and flow into the electrolyzer through the alkaline solution inlet pipeline. After power-on, the alkaline solution in the electrolyzer is electrolyzed. The generated oxygen enters the oxygen separator through the electrolyzer oxygen production pipeline, and the generated hydrogen enters the oxygen separator through the electrolyzer hydrogen production pipeline. This method utilizes the alkaline solution through the electrolyzer alkaline solution inlet pipeline, the electrolyzer oxygen production pipeline, and the electrolyzer hydrogen production pipeline to enable independent operation of each cell module, avoiding the need to shut down the entire system for maintenance and repair when a single electrolyzer fails.

[0074] In an feasible solution, the valves include: a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, and a seventh valve;

[0075] The first valve is located on the oxygen separator pressure inlet pilot bottle line, the second valve is located on the oxygen pilot bottle pressure relief line, the third valve is located on the hydrogen separator pressure inlet pilot bottle line, the fourth valve is located on the hydrogen pilot bottle pressure relief line, the fifth valve is located on the pressure balance line, the sixth valve is located on the oxygen pressure line, and the seventh valve is located on the hydrogen pressure line.

[0076] The valves also include: the eighth valve, the ninth valve, the tenth valve, the eleventh valve, and the twelfth valve;

[0077] The eighth valve is located on the oxygen production pipeline of the electrolyzer, the ninth valve is located on the hydrogen production pipeline of the electrolyzer, the tenth valve is located on the first drain pipe connected to the oxygen pilot cylinder, the eleventh valve is located on the second drain pipe connected to the hydrogen pilot cylinder, and the twelfth valve is located on the alkali inlet pipeline of the electrolyzer.

[0078] In this solution, different valves are installed on the oxygen separator pressure inlet pilot bottle line, oxygen separator pressure relief line, hydrogen separator pressure inlet pilot bottle line, hydrogen separator pressure relief line, pressure balance line, oxygen pressure line, hydrogen pressure line, electrolyzer oxygen production line, and electrolyzer hydrogen production line. The opening and closing of each line is automatically controlled by a controller. This allows for rapid isolation of the electrolyzer from the system in the event of a single electrolyzer failure, especially a diaphragm rupture leading to an increase in hydrogen in the oxygen content, ensuring that hydrogen and oxygen do not cross-contaminate through the electrolyzer.

[0079] In a feasible solution, such as Figure 2 As shown, process interface 1 is connected to the oxygen separator, process interface 5 is connected to the hydrogen separator, process interface 2 is the exhaust port of the oxygen pilot bottle, process interface 6 is the exhaust port of the hydrogen pilot bottle, process interface 3 is connected to the oxygen main pipe, process interface 10 is connected to the hydrogen main pipe, and process interface 6 is connected to the electrolyte main pipe. Pressure gauge PIT1 is used to detect the oxygen side pressure of the electrolyzer, and PIT2 is used to detect the hydrogen side pressure of the electrolyzer. Level gauge PDT1 is used to detect the liquid level of the oxygen pilot bottle, and level gauge PDT2 is used to detect the liquid level of the hydrogen pilot bottle. In this embodiment, if it is necessary to increase the output, the hydrogen-oxygen pilot bottle can be used to pressurize the electrolyzer and start the operation; when one electrolyzer malfunctions, it can be actively shut down and the pilot bottle can be used as a buffer to depressurize and isolate it without affecting the overall operation of the remaining equipment.

[0080] This embodiment provides a modular structure for an ALK electrolyzer. This modular structure, constructed using an oxygen pilot cylinder, a hydrogen pilot cylinder, a level gauge, several pipelines, several valves, and the electrolyzer itself, isolates electrolyzers that do not require startup at low power levels, enabling independent operation and shutdown of individual ALK electrolyzer modules and extending the lifespan of the ALK electrolyzer. If a module fails, the corresponding electrolyzer can be independently shut down, ensuring the stability of hydrogen production in the system. Thanks to the oxygen and hydrogen pilot cylinders and the independent pressure relief method, the electrolyzer can be smoothly depressurized after shutdown or failure, minimizing damage to the electrolyzer.

[0081] Example 2

[0082] This embodiment provides a control method for a slot module, such as... Figure 3 As shown, the control method utilizes the cell module structure of the ALK electrolytic cell in Example 1 and includes:

[0083] S110. Open the pressure balance line, oxygen pressure line and hydrogen pressure line so that the oxygen pilot bottle, hydrogen pilot bottle and electrolyzer are in a connected state.

[0084] S120, oxygen in the oxygen separator enters the pilot bottle line under pressure and hydrogen in the hydrogen separator enters the pilot bottle line under pressure and flows into the electrolytic cell at a preset pressure.

[0085] S130. Open the alkali inlet pipeline, oxygen production pipeline and hydrogen production pipeline of the electrolyzer.

[0086] S140. Close the oxygen pressure line and the hydrogen pressure line so that the oxygen pilot bottle, the hydrogen pilot bottle and the electrolyzer are in a non-connected state.

[0087] S150 drives the circulation pump on the alkaline solution inlet pipeline of the electrolytic cell to operate, controlling the electrolytic cell to be in working condition.

[0088] In steps S110-S150 above, first, the valves on the oxygen pressure pipeline and the hydrogen pressure pipeline are opened to connect the oxygen pilot bottle and the hydrogen pilot bottle. Then, the valve on the pressure balancing pipeline is opened. By controlling and adjusting the valves on the oxygen separator pressure inlet pilot bottle pipeline and the hydrogen separator pressure inlet pilot bottle pipeline, the gas in the oxygen-hydrogen separator enters the electrolyzer at a reasonable pressure, while ensuring that the liquid level difference between the oxygen pilot bottle and the hydrogen pilot bottle is within a set range during this period. When the pressure on both sides of the hydrogen and oxygen in the electrolyzer is the same as the pressure of the oxygen-hydrogen separator, the valves on the alkali inlet pipeline, the oxygen production pipeline, and the hydrogen production pipeline of the electrolyzer are opened to complete the connection between the electrolyzer and the oxygen-hydrogen pilot bottle. After a preset time, the valves on the oxygen pressure pipeline and the hydrogen pressure pipeline are closed to disconnect the oxygen-hydrogen pilot bottle from the electrolyzer. The circulation pump on the alkali inlet pipeline of the electrolyzer is started to control the circulation of alkali in the electrolyzer to generate hydrogen.

[0089] In this solution, the hydrogen-oxygen separator can be connected to one or more independent cell module structures consisting of one oxygen pilot cylinder, one hydrogen pilot cylinder, two level gauges, several pipelines, several valves, and one electrolytic cell. When only one or more electrolytic cells are needed to operate, the remaining electrolytic cells can be isolated from the hydrogen-oxygen separator and do not need to bear the separator pressure. When the system operation requires an increase in the number of electrolytic cells, a backup electrolytic cell can be smoothly connected.

[0090] In a feasible solution, such as Figure 4 As shown, step S140 further includes:

[0091] S141. After discharging the alkaline solution in the oxygen pilot cylinder and hydrogen pilot cylinder to the preset liquid level through the drain pipe, control the pressure balance pipeline to close.

[0092] In step S141 above, the valve on the first drain pipe connected to the oxygen pilot cylinder is opened, and the valve on the second drain pipe connected to the hydrogen pilot cylinder is opened at the same time. The alkaline solution in the oxygen pilot cylinder and the hydrogen pilot cylinder is discharged to a suitable position and then closed. Finally, the valve on the pressure balance pipeline is closed.

[0093] In this scheme, the alkaline solution in the hydrogen-oxygen pilot bottle is discharged to the preset liquid level through the drain pipe to avoid the liquid level being too high, which would result in too little space left for gas in the pilot bottle, and ensure that there is sufficient buffer space in the hydrogen-oxygen pilot bottle.

[0094] In a feasible solution, such as Figure 5 As shown, the control method includes:

[0095] S160, stop the circulation pump on the alkaline solution inlet pipeline of the electrolyzer, close the oxygen separator pressure inlet pilot bottle pipeline, the hydrogen separator pressure inlet pilot bottle pipeline, the electrolyzer oxygen production pipeline and the electrolyzer alkaline solution inlet pipeline, so that the oxygen separator, hydrogen separator and electrolyzer are in a non-connected state.

[0096] S170. Open the pressure balance line, oxygen pressure line and hydrogen pressure line to connect the oxygen pilot bottle, hydrogen pilot bottle and electrolyzer.

[0097] S180. Open the oxygen pilot bottle pressure relief line and the hydrogen pilot bottle pressure relief line to allow the electrolyzer to depressurize smoothly.

[0098] S190. When the pressure of the electrolytic cell drops to a preset threshold, the electrolytic cell is controlled to be in a shutdown state.

[0099] In steps S160-S190 above, after the electrolyzer and circulating pump are de-energized, the valves on the oxygen separator pressure inlet pilot bottle line, the hydrogen separator pressure inlet pilot bottle line, the electrolyzer oxygen production line, and the electrolyzer alkali inlet line are closed to completely separate the hydrogen-oxygen separator from the electrolyzer. First, the electrolyzer and the hydrogen-oxygen pilot bottle are connected. After a set time period, the valve on the pressure balancing line is opened, finally connecting the hydrogen-oxygen pilot bottle and the electrolyzer. The valves on the oxygen pilot bottle pressure relief line and the hydrogen pilot bottle pressure relief line are opened to allow for stable pressure relief in the electrolyzer. Once the pressure in the electrolyzer reaches zero, the cell module stops.

[0100] In this solution, when a certain electrolytic cell needs to be shut down or malfunctions and needs to be shut down, the electrolytic cell is first isolated, and then the pressure in the electrolytic cell can be released smoothly to reduce damage to the electrolytic cell without affecting the overall operating status of the corresponding equipment in other electrolytic cells.

[0101] In this embodiment, a control method for a cell module is provided. By controlling the connection status of the pressure balance pipeline, oxygen pressure pipeline, hydrogen pressure pipeline, oxygen separator pressure inlet pilot bottle pipeline, and hydrogen separator pressure inlet pilot bottle pipeline in the cell module structure of the ALK electrolyzer with the electrolyzer, the automatic switching between the two states of single cell module start-up and cell module shutdown is realized, thereby extending the life of the ALK electrolyzer.

[0102] Example 3

[0103] This embodiment provides a control system for a slot module, such as... Figure 6 As shown, the control system includes:

[0104] The first start-up module 210 is used to open the pressure balance line, oxygen pressure line and hydrogen pressure line so that the oxygen pilot bottle, hydrogen pilot bottle and electrolyzer are in a connected state.

[0105] Drive module 220 is used to drive oxygen in the oxygen separator to enter the pilot bottle line under oxygen separator pressure and hydrogen in the hydrogen separator to enter the pilot bottle line under hydrogen separator pressure and flow into the electrolytic cell according to a preset pressure.

[0106] The second start-up module 230 is used to start the alkaline solution inlet pipeline of the electrolyzer, the oxygen production pipeline of the electrolyzer, and the hydrogen production pipeline of the electrolyzer;

[0107] The first closing module 240 is used to close the oxygen pressure line and the hydrogen pressure line so that the oxygen pilot bottle, the hydrogen pilot bottle and the electrolyzer are in a non-connected state.

[0108] The first control module 250 is used to drive the circulation pump on the alkali inlet pipeline of the electrolytic cell and control the electrolytic cell to be in working condition.

[0109] The first start-up module 210 first controls the valves on the oxygen and hydrogen pressure lines to open, connecting the oxygen and hydrogen pilot cylinders. Then, it controls the valves on the pressure balancing line to open. The drive module 220 controls and adjusts the valves on the oxygen separator pressure inlet pilot cylinder line and the hydrogen separator pressure inlet pilot cylinder line, ensuring that the gas in the oxygen-hydrogen separator enters the electrolyzer at a reasonable pressure, while maintaining the liquid level difference between the oxygen and hydrogen pilot cylinders within a set range. When the pressure on both sides of the electrolyzer is equal to the pressure of the oxygen-hydrogen separator, the second start-up module 230 controls the valves on the electrolyzer alkali inlet line, the electrolyzer oxygen production line, and the electrolyzer hydrogen production line to open, completing the connection between the electrolyzer and the oxygen-hydrogen pilot cylinder. After a preset time, the first closing module 240 controls the valves on the oxygen pressure pipeline and the hydrogen pressure pipeline to close, cutting off the connection between the hydrogen-oxygen pilot bottle and the electrolyzer. The first control module 250 starts the circulation pump located on the alkaline solution inlet pipeline of the electrolyzer, controlling the alkaline solution in the electrolyzer to circulate and generate hydrogen.

[0110] In this solution, the hydrogen-oxygen separator can be connected to one or more independent cell modules consisting of an oxygen pilot cylinder, a hydrogen pilot cylinder, two level gauges, several pipelines, several valves, and an electrolytic cell. When only one or more electrolytic cells are needed to operate, the remaining electrolytic cells can be isolated from the hydrogen-oxygen separator and do not need to bear the separator pressure. When the system operation requires an increase in the number of electrolytic cells, a backup electrolytic cell can be smoothly connected.

[0111] In a feasible solution, such as Figure 7 As shown, the control system also includes:

[0112] The drain module 241 is used to discharge the alkaline solution in the oxygen pilot bottle and the hydrogen pilot bottle to the preset liquid level through the drain pipe, and then control the closure of the pressure balance pipeline.

[0113] The valve on the first drain pipe connected to the oxygen pilot cylinder is opened, and the valve on the second drain pipe connected to the hydrogen pilot cylinder is opened at the same time. The drain module 241 controls the alkaline solution in the oxygen pilot cylinder and the hydrogen pilot cylinder to be discharged to the appropriate position and then closed. Finally, the valve on the pressure balance pipeline is closed.

[0114] In this scheme, the alkaline solution in the hydrogen-oxygen pilot bottle is discharged to the preset liquid level through the drain pipe to avoid the liquid level being too high, which would result in too little space left for gas in the pilot bottle, and ensure that there is sufficient buffer space in the hydrogen-oxygen pilot bottle.

[0115] In one feasible embodiment, the control system further includes:

[0116] The second closing module 260 is used to drive the circulation pump on the alkali inlet pipeline of the electrolyzer to stop, and close the oxygen separator pressure inlet pilot bottle pipeline, the hydrogen separator pressure inlet pilot bottle pipeline, the electrolyzer oxygen production pipeline and the electrolyzer alkali inlet pipeline, so that the oxygen separator, hydrogen separator and electrolyzer are in a non-connected state.

[0117] The third start-up module 270 is used to open the pressure balance line, oxygen pressure line and hydrogen pressure line so that the oxygen pilot bottle, hydrogen pilot bottle and electrolyzer are in a connected state.

[0118] The fourth start-up module 280 is used to open the oxygen pilot bottle pressure relief line and the hydrogen pilot bottle pressure relief line so that the electrolyzer can be depressurized smoothly.

[0119] The second control module 290 is used to control the electrolytic cell to be in a shutdown state when the pressure of the electrolytic cell drops to a preset threshold.

[0120] In steps S160-S190 above, after the electrolyzer and circulating pump are de-energized, the valves on the oxygen separator pressure inlet pilot bottle line, the hydrogen separator pressure inlet pilot bottle line, the electrolyzer oxygen production line, and the electrolyzer alkali inlet line are closed to completely separate the hydrogen-oxygen separator from the electrolyzer. First, the electrolyzer and the hydrogen-oxygen pilot bottle are connected. After a set time period, the valve on the pressure balancing line is opened, finally connecting the hydrogen-oxygen pilot bottle and the electrolyzer. The valves on the oxygen pilot bottle pressure relief line and the hydrogen pilot bottle pressure relief line are opened to allow for stable pressure relief in the electrolyzer. Once the pressure in the electrolyzer reaches zero, the cell module stops.

[0121] In this solution, when a certain electrolytic cell needs to be shut down or malfunctions and needs to be shut down, the electrolytic cell is first isolated, and then the pressure in the electrolytic cell can be released smoothly to reduce damage to the electrolytic cell without affecting the overall operating status of the corresponding equipment in other electrolytic cells.

[0122] In this embodiment, a control system for a cell module is provided. The system utilizes a first start-up module, a second start-up module, and a first control module to control the connection status of the pressure balance pipeline, oxygen pressure pipeline, hydrogen pressure pipeline, oxygen separator pressure inlet pilot bottle pipeline, and hydrogen separator pressure inlet pilot bottle pipeline in the cell module structure of the ALK electrolyzer with the electrolyzer. This enables automatic switching between the start-up and shutdown states of a single cell module, thereby extending the lifespan of the ALK electrolyzer.

[0123] Example 4

[0124] Figure 8 This is a schematic diagram of the structure of an electronic device provided in this embodiment. The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the control method of the slot module in Embodiment 2. Figure 8 The electronic device 90 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention.

[0125] like Figure 8 As shown, the electronic device 90 can be manifested as a general-purpose computing device, such as a server device. The components of the electronic device 90 may include, but are not limited to: at least one processor 91, at least one memory 92, and a bus 93 connecting different system components (including memory 92 and processor 91).

[0126] Bus 93 includes a data bus, an address bus, and a control bus.

[0127] The memory 92 may include volatile memory, such as random access memory (RAM) 921 and / or cache memory 922, and may further include read-only memory (ROM) 923.

[0128] The memory 92 may also include a program / utility 925 having a set (at least one) of program modules 924, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0129] The processor 91 executes various functional applications and data processing by running computer programs stored in the memory 92, such as the control method of the slot module in Embodiment 2 of the present invention.

[0130] Electronic device 90 can also communicate with one or more external devices 94 (e.g., keyboard, pointing device, etc.). This communication can be performed via input / output (I / O) interface 95. Furthermore, the model-generating device 90 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 96. Figure 8 As shown, network adapter 96 communicates with other modules of the model-generated device 90 via bus 93. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the model-generated device 90, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0131] It should be noted that although several units / modules or sub-units / modules of the electronic device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0132] Example 5

[0133] This embodiment provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the control method of the slot module in Embodiment 2.

[0134] The readable storage medium may be more specifically adopted, including but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device, or any suitable combination thereof.

[0135] In a possible implementation, the present invention can also be implemented as a program product comprising program code, which, when the program product is run on a terminal device, causes the terminal device to execute the control method steps of the slot module of Embodiment 2.

[0136] The program code for executing the present invention can be written in any combination of one or more programming languages. The program code can be executed entirely on the user device, partially on the user device, as a standalone software package, partially on the user device and partially on a remote device, or entirely on a remote device.

[0137] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and all such changes and modifications shall fall within the scope of protection of the present invention.

[0138] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A cell module structure for an ALK electrolytic cell, characterized in that, The slot module structure includes: Oxygen pilot cylinder, hydrogen pilot cylinder, level gauge, several pipelines and several valves; The hydrogen pilot cylinder is connected to the oxygen pilot cylinder via a pressure balancing line. One end of the oxygen pilot cylinder is connected to the electrolytic cell via an oxygen pressure pipeline, the other end of the oxygen pilot cylinder is connected to the oxygen separator via an oxygen separator pressure inlet pilot cylinder pipeline, and the other end of the oxygen pilot cylinder is connected to the outside via an oxygen pilot cylinder pressure relief pipeline. One end of the hydrogen pilot cylinder is connected to the electrolytic cell via a hydrogen pressure pipeline, the other end of the hydrogen pilot cylinder is connected to the hydrogen separator via a hydrogen separator pressure inlet pilot cylinder pipeline, and the other end of the hydrogen pilot cylinder is connected to the outside via a hydrogen pilot cylinder pressure relief pipeline. The level gauges are respectively installed on both sides of the oxygen pilot cylinder and the hydrogen pilot cylinder, and are used to determine whether the pressure on both sides of the oxygen pilot cylinder and the hydrogen pilot cylinder is balanced based on the change in liquid level. Each of the valves is installed on a different pipeline and is used to control the connection status of each pipeline.

2. The cell module structure of the ALK electrolytic cell as described in claim 1, characterized in that, The cell module structure also includes: an oxygen production pipeline for the electrolytic cell, a hydrogen production pipeline for the electrolytic cell, and an alkaline solution inlet pipeline for the electrolytic cell; The oxygen produced by the electrolytic cell enters the oxygen separator through the electrolytic cell oxygen production pipeline. The hydrogen produced by the electrolyzer enters the hydrogen separator through the hydrogen production pipeline of the electrolyzer. The alkaline solutions separated by the oxygen separator and the hydrogen separator are mixed and flow into the electrolytic cell through the alkaline solution inlet pipeline.

3. The cell module structure of the ALK electrolytic cell as described in claim 2, characterized in that, The valves include: a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, and a seventh valve; The first valve is located on the oxygen separator pressure inlet pilot bottle line, the second valve is located on the oxygen pilot bottle pressure relief line, the third valve is located on the hydrogen separator pressure inlet pilot bottle line, the fourth valve is located on the hydrogen pilot bottle pressure relief line, the fifth valve is located on the pressure balance line, the sixth valve is located on the oxygen pressure line, and the seventh valve is located on the hydrogen pressure line.

4. The cell module structure of the ALK electrolytic cell as described in claim 3, characterized in that, The valves also include: the eighth valve, the ninth valve, the tenth valve, the eleventh valve, and the twelfth valve; The eighth valve is located on the oxygen production pipeline of the electrolyzer, the ninth valve is located on the hydrogen production pipeline of the electrolyzer, the tenth valve is located on the first drain pipe connected to the oxygen pilot cylinder, the eleventh valve is located on the second drain pipe connected to the hydrogen pilot cylinder, and the twelfth valve is located on the alkali inlet pipeline of the electrolyzer.

5. A control method for a slot module, characterized in that, The control method utilizes the cell module structure of the ALK electrolytic cell as described in any one of claims 1-4, and includes: Open the pressure balance line, oxygen pressure line and hydrogen pressure line to connect the oxygen pilot cylinder, hydrogen pilot cylinder and electrolyzer. Oxygen in the oxygen separator is introduced into the pilot bottle line by the oxygen separator pressure, and hydrogen in the hydrogen separator is introduced into the pilot bottle line by the hydrogen separator pressure and flows into the electrolytic cell at a preset pressure. Start the alkali inlet pipeline, oxygen production pipeline, and hydrogen production pipeline of the electrolyzer; Close the oxygen pressure line and the hydrogen pressure line so that the oxygen pilot bottle, the hydrogen pilot bottle and the electrolyzer are in a non-connected state; The circulating pump on the alkali inlet pipeline of the electrolytic cell is driven to operate, thereby controlling the electrolytic cell to be in working condition.

6. The control method for the slot module as described in claim 5, characterized in that, After the step of closing the oxygen pressure line and the hydrogen pressure line, the method further includes: After the alkaline solution in the oxygen pilot cylinder and the hydrogen pilot cylinder is discharged to the preset liquid level through the drain pipe, the pressure balance pipeline is closed.

7. The control method for the slot module as described in claim 5, characterized in that, The control method further includes: The circulating pump on the alkali inlet pipeline of the electrolyzer is stopped, and the pressure inlet pipeline of the oxygen separator, the pressure inlet pipeline of the hydrogen separator, the oxygen production pipeline of the electrolyzer, and the alkali inlet pipeline of the electrolyzer are closed, so that the oxygen separator, the hydrogen separator and the electrolyzer are in a non-connected state. Open the pressure balance line, the oxygen pressure line, and the hydrogen pressure line so that the oxygen pilot bottle, the hydrogen pilot bottle, and the electrolyzer are in a connected state. Open the oxygen pilot bottle pressure relief line and the hydrogen pilot bottle pressure relief line to allow the electrolyzer to depressurize smoothly; When the pressure of the electrolytic cell drops to a preset threshold, the electrolytic cell is controlled to be in a shutdown state.

8. A control system for a slot module, characterized in that, The control system includes: The first start-up module is used to open the pressure balance line, oxygen pressure line and hydrogen pressure line so that the oxygen pilot bottle, hydrogen pilot bottle and electrolyzer are in a connected state. The drive module is used to drive oxygen in the oxygen separator to enter the pilot bottle line under oxygen separator pressure and hydrogen in the hydrogen separator to enter the pilot bottle line under hydrogen separator pressure and flow into the electrolytic cell at a preset pressure. The second startup module is used to start the alkali inlet pipeline, the oxygen production pipeline, and the hydrogen production pipeline of the electrolyzer. The first closing module is used to close the oxygen pressure line and the hydrogen pressure line so that the oxygen pilot bottle, the hydrogen pilot bottle and the electrolyzer are in a non-connected state. The first control module is used to drive the circulation pump on the alkali inlet pipeline of the electrolytic cell to operate and control the electrolytic cell to be in working state.

9. The control system for the slot module as described in claim 8, characterized in that, The control system further includes: The draining module is used to discharge the alkaline solution in the oxygen pilot bottle and the hydrogen pilot bottle to a preset liquid level through the drain pipe, and then control the closure of the pressure balance pipeline.

10. The control system for the slot module as described in claim 8, characterized in that, The control system further includes: The second closing module is used to drive the circulation pump on the alkali inlet pipeline of the electrolyzer to stop, and close the oxygen separator pressure inlet pilot bottle pipeline, the hydrogen separator pressure inlet pilot bottle pipeline, the electrolyzer oxygen production pipeline and the electrolyzer alkali inlet pipeline, so that the oxygen separator, the hydrogen separator and the electrolyzer are in a non-connected state. The third start-up module is used to open the pressure balance line, the oxygen pressure line and the hydrogen pressure line so that the oxygen pilot bottle, the hydrogen pilot bottle and the electrolyzer are in a connected state. The fourth start-up module is used to open the oxygen pilot bottle pressure relief line and the hydrogen pilot bottle pressure relief line so that the electrolyzer can be depressurized smoothly. The second control module is used to control the electrolytic cell to be in a shutdown state when the pressure of the electrolytic cell drops to a preset threshold.

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