CN117389207A - A control system and control method for a cabinet-type hydrogen production and supply system - Google Patents

Abstract

The invention provides a control system and a control method of a cabinet type hydrogen production and supply system, and relates to the technical field of distributed new energy equipment. According to the invention, on one hand, a manual mode and an automatic mode are provided for selection, so that the full-automatic continuous operation of the hydrogen production equipment can be realized under the unattended condition, the labor cost is reduced, on the other hand, the remote cluster control management of the hydrogen production equipment in different areas is realized through the connection of the hydrogen production equipment and the cloud platform, the working efficiency is effectively improved, and meanwhile, in the whole arrangement process, the communicating vessel effect is utilized to reduce the executor in the hydrogen production equipment, so that the energy consumption of the hydrogen production equipment in the working process is reduced, the standby duration of the hydrogen production equipment is prolonged, and the efficiency is improved.

Description

A control system and control method for a cabinet-type hydrogen production and supply system

Technical field

The invention relates to the technical field of distributed new energy equipment, and in particular to a control system and control method of a cabinet-type hydrogen production and supply system.

Background technique

The hydrogen energy industry is an industry covering multiple fields, involving the production, storage, transportation and application of hydrogen. The development and utilization of hydrogen energy is triggering a profound energy revolution. Hydrogen energy has become an important factor in solving the energy crisis and building a clean, low-carbon, The new code for a safe and efficient modern energy system. At the same time, hydrogen energy is a secondary energy source with rich sources, green and low carbon, and widely used. It can help the large-scale consumption of renewable energy, realize large-scale peak shaving of the power grid, and cross-season and cross-country Regional energy storage accelerates the low-carbonization of industry, construction, transportation and other fields.

However, in the current development process of the hydrogen energy industry, the hydrogen production equipment requires workers to be on duty during the working process. The labor cost is high. At the same time, it is impossible to achieve remote cluster control and management of hydrogen production equipment in different regions. The overall control effect between regions Poor, resulting in low overall work efficiency, which needs to be improved.

Contents of the invention

The purpose of the present invention is to solve the technical problems raised in the above background art.

The present invention adopts the following technical solution: a control system for a cabinet-type hydrogen production and supply system. The system includes a PLC controller, a human-computer interaction module, a real-time monitoring and alarm module, a remote control data transmission module, an actuator module and Hydrogen fuel cells and power distribution modules, among which,

The human-computer interaction module consists of an OLED touch screen, main power switch, fuel cell switch and emergency stop switch;

The real-time monitoring and alarm module consists of a pressure sensor, a temperature sensor, a mod-bus transmitter, an ultrasonic liquid level sensor, and a hydrogen leakage monitoring alarm;

The remote control data transmission module consists of an industrial control router and a hydrogen and electricity equipment remote control cloud platform;

The actuator module consists of an explosion-proof solenoid valve, an electronic pressure regulator, a pressure pump, a water pump, a ventilation fan, a quantitative feeding device, a feeding ball valve and a discharging ball valve;

The hydrogen fuel cell and power distribution module consists of a hydrogen fuel cell, a voltage stabilizing board and a DC/AC inverter.

Preferably, the OLED touch screen is connected to the PLC controller signal through the RS485/RS422/RS232 serial port, and displays the established configuration software system, which can be manually selected for manual/automatic control. Here, the OLED touch screen is connected to the PLC controller, which can provide a medium for the staff's operation, thereby making it convenient for the staff to operate and control the system.

Preferably, the pressure sensor, temperature sensor, mod-bus transmitter, and ultrasonic liquid level sensor are all connected to the PLC controller through 4mA-20mA electrical signal lines, and the hydrogen leakage monitoring alarm is connected to the PLC controller. Analog signal input signal connection. Here, various parameters can be obtained using various sensors such as pressure sensors, temperature sensors, mod-bus transmitters and ultrasonic liquid level sensors. Then the PLC controller can use internal algorithms to correspond the received current values to each The parameter values are used to monitor the working status, and the hydrogen leakage monitoring alarm can achieve the purpose of timely alarm.

Preferably, the industrial control router is connected to the PLC controller signal through a LAN interface. The industrial control router supports 4G signals, WiFi signals and Bluetooth device remote control. The hydrogen and electricity equipment remote control cloud platform is logged in/personally through the PC web page. There are three ways to log in: mobile App login/personal mobile WeChat applet, and the built configuration software system will be displayed. Here, the industrial control router can perform remote control within the area through a variety of signal connection methods, and the hydrogen power equipment remote control cloud platform can view, monitor, control, process adjustment, system update and other operations on the equipment in real time, and also supports operations such as Functions include batch operations on multiple devices and synchronization of work processes between devices on the same platform.

Preferably, the explosion-proof solenoid valve, pressure pump, water pump, ventilation fan, feed ball valve and discharge ball valve are all connected to the switch terminal of the PLC controller, and the electronic pressure regulator is connected to the analog signal input of the PLC controller. terminal signal connection, the quantitative feeding device is connected with the PWM output terminal signal of the PLC controller. Here, the explosion-proof solenoid valve is used to control the connection status of the gas path or liquid channel between the containers in the cabinet-type hydrogen production and supply system. The electronic pressure regulator feeds back the current signal to the PLC controller to collect the pressure parameters, and maintains them according to the PID algorithm. The air flow output from the electronic pressure regulator to the hydrogen fuel cell is stable at 0.5Mpa. The pressure pump is used to balance the internal air pressure of the pressure balance tank in the cabinet-type hydrogen production and supply system. The water pump is used to automatically pump water into the cabinet-type hydrogen production and supply system. The water storage tank is filled with water, and the ventilation fan is used to remove a small amount of hydrogen that escapes from the upper and middle parts of the cabinet-type hydrogen production and hydrogen supply system. The quantitative feeding device is used to control the feed amount and speed of the cabinet-type hydrogen production and hydrogen supply system, while the feeding Ball valves and discharge ball valves are used to control the feed and discharge of reaction tanks in cabinet-type hydrogen production and supply systems.

Preferably, the output end of the hydrogen fuel cell is electrically connected to the input end of the PLC controller, and a hydrogen fuel cell automatic control subunit is provided inside the PLC controller. Here, the hydrogen fuel cell can supply energy to the PLC controller to ensure the normal use of the PLC controller. The hydrogen fuel cell automatic control subunit can adjust and regulate the hydrogen inlet pressure of the hydrogen fuel cell based on the monitoring to ensure the stable use of the overall system. .

A control method for the control system of a cabinet-type hydrogen production and supply system. The control method includes two working modes:

Mode 1: Manual operation mode, the user can operate the cabinet-type hydrogen production and supply system according to the manual workflow by operating the various component channels connected to the PLC controller on the OLED touch screen, Bluetooth remote control terminal, and PTZ terminal;

Mode 2: Automatic working mode. Users can select the automatic working mode on the OLED touch screen, Bluetooth remote control, and PTZ. The PLC controller performs fully automatic work according to the downloaded work script process.

Here, two operating methods are provided, which can be flexibly selected according to actual needs, reducing labor costs and effectively improving work efficiency.

Preferably, the manual operation mode steps are as follows:

Step 1: Turn on the water pump, add water to the water storage tank in the cabinet-type hydrogen production and supply system, and then turn off the water pump until the liquid level monitoring value in the water storage tank meets the working requirements;

Step 2: Open the explosion-proof solenoid valve (No. 1 solenoid valve) between the water storage tank and the pressure tank, so that the water in the water storage tank automatically flows to the pressure tank due to the connector principle. When the pressure tank liquid level monitoring value meets the work requirements Then close the No. 1 solenoid valve;

Step 3: Turn on the air pressure pump and increase the pressure of the air pressure tank to 0.8Mpa;

Step 4: Open the explosion-proof solenoid valve (No. 2 solenoid valve) between the pressure tank and the reactor. When the liquid level of the reactor meets the working requirements, open the feed ball valve;

Step 5: Start the quantitative feeding system and close the feeding ball valve after the feeding is completed;

Step 6: After the reactor air pressure meets the working requirements, open the explosion-proof solenoid valve (No. 3 solenoid valve) and the electronic pressure regulating valve;

Step 7: When the value of the electronic pressure regulating valve meets 0.5Mpa＜X＜0.8Mpa, open the hydrogen fuel cell automatic control subroutine;

Step 8: When the value of the electronic pressure regulating valve does not satisfy 0.5Mpa <

Here, the effect of manual operation of the system can be achieved.

Preferably, the steps of the automatic working mode are as follows:

Step 1: Monitor the working status and restore the actuator to the preparatory working status;

Step 2: Determine whether the liquid level monitoring value of the water storage tank meets the conditions. If not, turn on the water pump to add water. If satisfied, go to the next step;

Step 3: Open the No. 1 connector and determine whether the liquid level monitoring value of the pressure balance tank meets the conditions. If so, proceed to the next step;

Step 4: Close the No. 1 connector, open the No. 2 connector, open the feed ball valve, and press the air pressure pump to determine whether the liquid level detection value of the reaction tank meets the conditions and proceed to the next step;

Step 5: The automatic feeding system starts working;

Step 6: After the feeding is completed, the feeding ball valve is closed, and the air pressure pump begins to release pressure. It is judged whether the liquid level monitoring value of the pressure balance tank meets the conditions, and if so, proceed to the next step;

Step 7: The air pressure pump stops working, and the No. 2 connector is closed at the same time, waiting for the reaction;

Step 8: Determine whether the pressure monitoring value of the reaction tank meets the conditions, and if so, proceed to the next step;

Step 9: Open the No. 3 connector, and the hydrogen generated by the reaction tank will automatically enter the buffer tank. Open the No. 2 connector, and press the pressure pump to make the pressure in the pressure balance tank 0.5Mpa greater than the reaction tank. Determine whether the liquid level monitoring value of the reaction tank meets the conditions. , if satisfied, go to the next step;

Step 10: Close connectors No. 2 and No. 3, and the pressure pump begins to release pressure until the pressure detection value in the pressure balance tank is 0.0Mpa. Close the pressure pump; at the same time, open the electronic pressure regulating valve and start the hydrogen fuel cell automatic control subunit;

Step 11: Determine whether the buffer tank pressure detection value meets the conditions, and if so, proceed to the next step;

Step 12: Open the No. 2 connector and determine whether the liquid level detection value of the pressure balance tank meets the conditions. If so, proceed to the next step;

Step 13: Close the No. 2 connector, open the discharge ball valve, and close the discharge ball valve after a few seconds;

Step 14: Start the water circulation subsystem and turn on the water pump to add water to the water storage tank;

Step 15: Determine whether the working time meets the conditions. If not, return to step one. If it is, the automatic working mode will end. It will automatically enter standby mode 30 seconds after stopping working.

Here, the system can be realized to work fully automatically and continuously without any supervision.

Preferably, the specific workflow of the hydrogen fuel cell automatic control subunit is as follows: It is detected that the pressure at the hydrogen gas inlet of the hydrogen fuel cell is within the range of 0.5Mpa＜X＜0.8Mpa, and the hydrogen fuel cell fan group starts to work. The gas port inhales a certain amount of hydrogen, closes the gas inlet, and waits for the reaction to generate electrical energy. When the pressure of the hydrogen gas channel inside the hydrogen fuel cell is insufficient, open the gas outlet to discharge, then close the gas outlet and open the gas inlet to re-intake; if If the air inlet pressure is less than the working pressure range, the hydrogen fuel cell will stop air intake; if the hydrogen fuel cell is actively shut down, the fan group will increase the speed to discharge the remaining gas inside. Here, the continued and stable use of hydrogen fuel cells can be ensured.

Compared with the existing technology, the advantages and positive effects of the present invention are:

1. In the present invention, on the one hand, a manual mode and an automatic mode are provided for selection, so that the hydrogen production equipment can work continuously and fully automatically without any supervision, reducing labor costs. On the other hand, through the hydrogen production equipment and the cloud platform The connection realizes remote cluster control and management of hydrogen production equipment in different areas, effectively improving work efficiency. At the same time, during the overall layout process, through the connector effect, the number of actuators inside the hydrogen production equipment is reduced, so that the energy consumption of the hydrogen production equipment during operation is reduced. , increase the standby life of hydrogen production equipment and improve efficiency.

2. In the present invention, through the continuous feeding cycle reaction, the pressure threshold of the hydrogen production equipment is reduced without losing production capacity, making the hydrogen production equipment safer during operation, and by controlling the reaction process The reactor pressure and liquid level are controlled to reduce air impurities and improve product purity. The generated hydrogen can be directly passed into the hydrogen fuel cell without damaging the life of the hydrogen fuel cell, eliminating the need for traditional hydrogen production technology. The application of complex operating processes such as front-end pressure swing adsorption purification reduces a large amount of costs in the use of hydrogen.

Description of the drawings

Figure 1 is a schematic diagram of the module layout of the control system of a cabinet-type hydrogen production and supply system proposed by the present invention;

Figure 2 is a schematic diagram of the automatic workflow of a control system and control method of a cabinet-type hydrogen production and supply system proposed by the present invention.

Detailed ways

In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, as long as there is no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described here. Therefore, the present invention is not limited to the specific embodiments disclosed below. limit.

Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional technical reagents, methods and equipment in this technical field.

Example

Please refer to Figures 1-2. The present invention provides a technical solution: a control system for a cabinet-type hydrogen production and supply system, including a PLC controller, a human-computer interaction module, a real-time monitoring and alarm module, a remote control data transmission module, Actuator module and hydrogen fuel cell and power distribution module, among which,

The human-computer interaction module consists of an OLED touch screen, main power switch, fuel cell switch and emergency stop switch;

The real-time monitoring and alarm module consists of a pressure sensor, a temperature sensor, a mod-bus transmitter, an ultrasonic liquid level sensor, and a hydrogen leakage monitoring alarm;

The remote control data transmission module consists of an industrial control router and a hydrogen and electricity equipment remote control cloud platform;

The actuator module consists of an explosion-proof solenoid valve, an electronic pressure regulator, a pressure pump, a water pump, a ventilation fan, a quantitative feeding device, a feeding ball valve and a discharging ball valve;

The hydrogen fuel cell and power distribution module consists of a hydrogen fuel cell, a voltage stabilizing board and a DC/AC inverter.

In the present invention, on the one hand, a manual mode and an automatic mode are provided for selection, so that the hydrogen production equipment can work fully automatically and continuously without being attended, reducing labor costs; on the other hand, through the connection between the hydrogen production equipment and the cloud platform Realize remote cluster control and management of hydrogen production equipment in different areas, effectively improving work efficiency. At the same time, during the overall layout process, through the connector effect, the number of actuators inside the hydrogen production equipment is reduced, which reduces the energy consumption of the hydrogen production equipment during operation and increases The hydrogen production equipment has a standby life to improve efficiency. At the same time, through the continuous feeding cycle reaction, the pressure threshold of the hydrogen production equipment is reduced without losing production capacity, making the hydrogen production equipment safer at work. High, and by regulating the pressure and liquid level of the reactor during the reaction process, air impurities are reduced and product purity is improved. The generated hydrogen can be directly passed into the hydrogen fuel cell without damaging the life of the hydrogen fuel cell, saving money. It eliminates the complex operating procedures such as pressure swing adsorption and purification before the application of traditional hydrogen production technology, and reduces a large amount of costs in the use of hydrogen.

The OLED touch screen is connected to the PLC controller signal through the RS485/RS422/RS232 serial port, and displays the established configuration software system, which can be manually selected for manual/automatic control. The OLED touch screen is connected to the PLC controller, which can be used by the staff. The operation provides a medium to facilitate the staff to operate and control the system. The pressure sensor, temperature sensor, mod-bus transmitter, and ultrasonic liquid level sensor are all connected to the PLC controller signal through a 4mA-20mA electrical signal line. Hydrogen leakage monitoring The alarm is connected to the analog signal input end of the PLC controller. Various parameters can be obtained by using various sensors such as pressure sensors, temperature sensors, mod-bus transmitters and ultrasonic liquid level sensors. Then the PLC controller can obtain a variety of parameters through the internal Algorithm, the received current value is corresponding to each parameter value for monitoring the working status, and the hydrogen leakage monitoring alarm can achieve the purpose of timely alarm.

The industrial control router is connected to the PLC controller signal through the LAN interface. The industrial control router supports 4G signal, WiFi signal and Bluetooth device remote control. The hydrogen and electricity equipment remote control cloud platform can be logged in through the PC webpage/personal mobile App login/personal mobile WeChat mini-channel. Log in to the program in three ways and display the built configuration software system. The industrial control router can perform remote control in the area through a variety of signal connection methods, and the hydrogen and electricity equipment remote control cloud platform can view and view the equipment in real time. Monitoring, control, process adjustment, system update and other operations, while supporting batch operations on multiple devices, synchronizing work processes of devices on the same platform and other functions.

The explosion-proof solenoid valve, pressure pump, water pump, ventilation fan, feeding ball valve and discharge ball valve are all connected to the switch terminal of the PLC controller. The electronic pressure regulator is connected to the analog signal input terminal of the PLC controller. The quantitative feeding device is connected to the analog signal input terminal of the PLC controller. The PWM output terminal signal connection of the PLC controller. The explosion-proof solenoid valve is used to control the connection status of the gas path or liquid channel between the containers in the cabinet-type hydrogen production and supply system. The electronic pressure regulator feedbacks the current signal collection to the PLC controller. The pressure parameter is based on the PID algorithm to keep the air flow output from the electronic pressure regulator to the hydrogen fuel cell stable at 0.5Mpa. The pressure pump is used to balance the internal pressure of the pressure balance tank in the cabinet-type hydrogen production and supply system. The water pump is used to pump water to the cabinet-type hydrogen production and supply system. The water storage tank in the hydrogen production and supply system is automatically filled with water. The ventilation fan is used to remove a small amount of hydrogen that escapes from the upper and middle parts of the cabinet-type hydrogen production and hydrogen supply system. The quantitative feeding device is used to control the feeding of the cabinet-type hydrogen production and hydrogen supply system. The feed ball valve and the discharge ball valve are used to control the feed and discharge of the reaction tank in the cabinet-type hydrogen production and supply system.

The output end of the hydrogen fuel cell is electrically connected to the input end of the PLC controller. A hydrogen fuel cell automatic control subunit is provided inside the PLC controller. The hydrogen fuel cell can supply energy to the PLC controller and ensure the operation of the PLC controller. In normal use, the hydrogen fuel cell automatic control subunit can adjust and regulate based on the monitored hydrogen inlet pressure of the hydrogen fuel cell to ensure the stable use of the overall system.

A control method for the control system of a cabinet-type hydrogen production and supply system, including two working modes:

Mode 1: Manual operation mode, the user can operate the cabinet-type hydrogen production and supply system according to the manual workflow by operating the various component channels connected to the PLC controller on the OLED touch screen, Bluetooth remote control terminal, and PTZ terminal;

Mode 2: Automatic working mode. Users can select the automatic working mode on the OLED touch screen, Bluetooth remote control, and PTZ. The PLC controller performs fully automatic work according to the downloaded work script process.

Two operating modes are provided, which can be flexibly selected according to actual needs, reducing labor costs and effectively improving work efficiency.

The steps for manual operation mode are as follows:

Step 1: Turn on the water pump, add water to the water storage tank in the cabinet-type hydrogen production and supply system, and then turn off the water pump until the liquid level monitoring value in the water storage tank meets the working requirements;

Step 2: Open the explosion-proof solenoid valve (No. 1 solenoid valve) between the water storage tank and the pressure tank, so that the water in the water storage tank automatically flows to the pressure tank due to the connector principle. When the pressure tank liquid level monitoring value meets the work requirements Then close the No. 1 solenoid valve;

Step 3: Turn on the air pressure pump and increase the pressure of the air pressure tank to 0.8Mpa;

Step 4: Open the explosion-proof solenoid valve (No. 2 solenoid valve) between the pressure tank and the reactor. When the liquid level of the reactor meets the working requirements, open the feed ball valve;

Step 5: Start the quantitative feeding system and close the feeding ball valve after the feeding is completed;

Step 6: After the reactor air pressure meets the working requirements, open the explosion-proof solenoid valve (No. 3 solenoid valve) and the electronic pressure regulating valve;

Step 7: When the value of the electronic pressure regulating valve meets 0.5Mpa＜X＜0.8Mpa, open the hydrogen fuel cell automatic control subroutine;

Step 8: When the value of the electronic pressure regulating valve does not satisfy 0.5Mpa <

The steps for automatic working mode are as follows:

Step 1: Monitor the working status and restore the actuator to the preparatory working status;

Step 2: Determine whether the liquid level monitoring value of the water storage tank meets the conditions. If not, turn on the water pump to add water. If satisfied, go to the next step;

Step 3: Open the No. 1 connector and determine whether the liquid level monitoring value of the pressure balance tank meets the conditions. If so, proceed to the next step;

Step 4: Close the No. 1 connector, open the No. 2 connector, open the feed ball valve, and press the air pressure pump to determine whether the liquid level detection value of the reaction tank meets the conditions and proceed to the next step;

Step 5: The automatic feeding system starts working;

Step 6: After the feeding is completed, the feeding ball valve is closed, and the air pressure pump begins to release pressure. It is judged whether the liquid level monitoring value of the pressure balance tank meets the conditions, and if so, proceed to the next step;

Step 7: The air pressure pump stops working, and the No. 2 connector is closed at the same time, waiting for the reaction;

Step 8: Determine whether the pressure monitoring value of the reaction tank meets the conditions, and if so, proceed to the next step;

Step 9: Open the No. 3 connector, and the hydrogen generated by the reaction tank will automatically enter the buffer tank. Open the No. 2 connector, and press the pressure pump to make the pressure in the pressure balance tank 0.5Mpa greater than the reaction tank. Determine whether the liquid level monitoring value of the reaction tank meets the conditions. , if satisfied, go to the next step;

Step 10: Close connectors No. 2 and No. 3, and the pressure pump begins to release pressure until the pressure detection value in the pressure balance tank is 0.0Mpa. Close the pressure pump; at the same time, open the electronic pressure regulating valve and start the hydrogen fuel cell automatic control subunit;

Step 11: Determine whether the buffer tank pressure detection value meets the conditions, and if so, proceed to the next step;

Step 12: Open the No. 2 connector and determine whether the liquid level detection value of the pressure balance tank meets the conditions. If so, proceed to the next step;

Step 13: Close the No. 2 connector, open the discharge ball valve, and close the discharge ball valve after a few seconds;

Step 14: Start the water circulation subsystem and turn on the water pump to add water to the water storage tank;

Step 15: Determine whether the working time meets the conditions. If not, return to step one. If it is, the automatic working mode will end. It will automatically enter standby mode 30 seconds after stopping working.

The specific workflow of the hydrogen fuel cell automatic control subunit is as follows: It is detected that the pressure at the hydrogen air inlet of the hydrogen fuel cell is within the range of 0.5Mpa< Hydrogen, close the air inlet and wait for the reaction to generate electricity. When the pressure of the hydrogen gas channel inside the hydrogen fuel cell is insufficient, open the air outlet to discharge, then close the air outlet and open the air inlet to re-inhale; if the air inlet pressure is less than the working If the hydrogen fuel cell is actively shut down, the fan group will increase the speed to discharge the remaining gas inside, which can ensure the continuous and stable use of the hydrogen fuel cell.

Working principle: During the operation of the control system, the staff can choose the actual operation method according to the actual situation. If manual operation is selected, the water pump is first turned on at this time, and water is added to the water storage tank in the cabinet-type hydrogen production and supply system until the storage tank After the water tank liquid level monitoring value meets the working requirements, turn off the water pump, and then open the explosion-proof solenoid valve (No. 1 solenoid valve) between the water storage tank and the air pressure tank, so that the water in the water storage tank automatically flows to the air pressure tank due to the connector principle. , when the liquid level monitoring value of the air pressure tank meets the working requirements, close the No. 1 solenoid valve, then open the air pressure pump, increase the pressure of the air pressure tank to 0.8Mpa, and then open the explosion-proof solenoid valve (No. 2 solenoid valve) between the air pressure tank and the reactor. ), when the liquid level of the reactor meets the working requirements, open the feeding ball valve, and then start the quantitative feeding system. After the feeding is completed, close the feeding ball valve. When the air pressure of the reactor meets the working requirements, open the explosion-proof solenoid valve (No. 3 solenoid valve ), open the electronic pressure regulating valve. When the value of the electronic pressure regulating valve meets 0.5Mpa＜X＜0.8Mpa, open the hydrogen fuel cell automatic control subroutine. When the value of the electronic pressure regulating valve does not meet 0.5Mpa＜X＜0.8Mpa, the hydrogen The fuel cell automatically removes the remaining hydrogen, opens the reactor vent valve, turns on the ventilation fan, and the single manual work process ends; if automatic operation is selected, the working status is first monitored, the actuator returns to the preparatory working status, and the liquid level monitoring value of the water storage tank is judged. If the conditions are met, if not, open the water pump to add water. After the conditions are met, open the No. 1 connector to determine whether the liquid level monitoring value of the pressure balance tank meets the conditions. After the conditions are met, close the No. 1 connector, open the No. 2 connector, and open the feed. The ball valve and air pressure pump pressurize to determine whether the liquid level detection value of the reaction tank meets the conditions. After the conditions are met, the automatic feeding system starts to work. After the feeding is completed, the feeding ball valve closes and the air pressure pump starts to release pressure to determine whether the liquid level monitoring value of the pressure balance tank meets the conditions. Conditions, after the conditions are met, the air pressure pump stops working, and the No. 2 connector is closed at the same time, waiting for the reaction to determine whether the pressure monitoring value of the reaction tank meets the conditions. After the conditions are met, the No. 3 connector is opened, and the hydrogen generated by the reaction tank automatically enters the buffer tank and opens Connector No. 2, the pressure pump pressurizes the pressure in the pressure balance tank so that the pressure in the pressure balance tank is greater than 0.5Mpa in the reaction tank. It is judged whether the liquid level monitoring value of the reaction tank meets the conditions. When the conditions are met, connect No. 2 and No. 3 are closed, and the pressure pump starts to release pressure until the pressure is When the pressure detection value in the balance tank is 0.0Mpa, turn off the pressure pump; at the same time, open the electronic pressure regulating valve, start the hydrogen fuel cell automatic control subunit, and determine whether the pressure detection value of the buffer tank meets the conditions. After meeting the conditions, open the No. 2 connector. Determine whether the liquid level detection value of the pressure balance tank meets the conditions. After meeting the conditions, close the No. 2 connector, open the discharge ball valve, close the discharge ball valve after a few seconds, then start the water circulation subsystem, open the water pump to add water to the water storage tank, judge Whether the working time meets the conditions, if not, it will return to the initial step, if it is met, the automatic working mode will end, and it will automatically enter the standby mode 30 seconds after stopping working.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any skilled person familiar with the art may make changes or modifications to equivalent changes using the technical contents disclosed above. The embodiments may be applied to other fields, but any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A control system for a cabinet-type hydrogen production and supply system, characterized in that: the system includes a PLC controller, a human-computer interaction module, a real-time monitoring and alarm module, a remote control data transmission module, an actuator module and a hydrogen fuel Batteries and power distribution modules, among which, The human-computer interaction module consists of an OLED touch screen, main power switch, fuel cell switch and emergency stop switch; The real-time monitoring and alarm module consists of a pressure sensor, a temperature sensor, a mod-bus transmitter, an ultrasonic liquid level sensor, and a hydrogen leakage monitoring alarm; The remote control data transmission module consists of an industrial control router and a hydrogen and electricity equipment remote control cloud platform; The actuator module consists of an explosion-proof solenoid valve, an electronic pressure regulator, a pressure pump, a water pump, a ventilation fan, a quantitative feeding device, a feeding ball valve and a discharging ball valve; The hydrogen fuel cell and power distribution module consists of a hydrogen fuel cell, a voltage stabilizing board and a DC/AC inverter. 2. The control system of the cabinet-type hydrogen production and supply system according to claim 1, characterized in that: the OLED touch screen is connected to the PLC controller signal through the RS485/RS422/RS232 serial port, and displays the established configuration. Software system allows manual selection for manual/automatic control. 3. The control system of the cabinet-type hydrogen production and supply system according to claim 1, characterized in that: the pressure sensor, temperature sensor, mod-bus transmitter, and ultrasonic liquid level sensor all pass 4mA-20mA electrical signals. The line is connected to the signal of the PLC controller, and the hydrogen leakage monitoring alarm is connected to the analog signal input end of the PLC controller. 4. The control system of the cabinet-type hydrogen production and supply system according to claim 1, characterized in that: the industrial control router is connected to the PLC controller signal through a LAN interface, and the industrial control router supports 4G signals, WiFi signals and Bluetooth For remote control of equipment, the hydrogen and electricity equipment remote control cloud platform can be logged in through three methods: PC web page login/personal mobile App login/personal mobile WeChat applet, and displays the built configuration software system. 5. The control system of the cabinet-type hydrogen production and supply system according to claim 1, characterized in that: the explosion-proof solenoid valve, pressure pump, water pump, ventilation fan, feeding ball valve and discharging ball valve are all connected with the PLC controller. The switch terminal is connected, the electronic voltage regulator is signal-connected to the analog signal input terminal of the PLC controller, and the quantitative feeding device is signal-connected to the PWM output terminal of the PLC controller. 6. The control system of the cabinet-type hydrogen production and supply system according to claim 1, characterized in that: the output end of the hydrogen fuel cell is electrically connected to the input end of the PLC controller, and the internal part of the PLC controller A hydrogen fuel cell automatic control subunit is provided. 7. A control method for the control system of the cabinet-type hydrogen production and supply system according to any one of claims 1 to 6, characterized in that the control method includes two working modes: Mode 1: Manual operation mode, the user can operate the cabinet-type hydrogen production and supply system according to the manual workflow by operating the various component channels connected to the PLC controller on the OLED touch screen, Bluetooth remote control terminal, and PTZ terminal; Mode 2: Automatic working mode. Users can select the automatic working mode on the OLED touch screen, Bluetooth remote control, and PTZ. The PLC controller performs fully automatic work according to the downloaded work script process. 8. The control method of the control system of the cabinet-type hydrogen production and supply system according to claim 7, characterized in that the steps of the manual operation mode are as follows: Step 1: Turn on the water pump, add water to the water storage tank in the cabinet-type hydrogen production and supply system, and then turn off the water pump until the liquid level monitoring value in the water storage tank meets the working requirements; Step 2: Open the explosion-proof solenoid valve (No. 1 solenoid valve) between the water storage tank and the pressure tank, so that the water in the water storage tank automatically flows to the pressure tank due to the connector principle. When the pressure tank liquid level monitoring value meets the work requirements Then close the No. 1 solenoid valve; Step 3: Turn on the air pressure pump and increase the pressure of the air pressure tank to 0.8Mpa; Step 4: Open the explosion-proof solenoid valve (No. 2 solenoid valve) between the pressure tank and the reactor. When the liquid level of the reactor meets the working requirements, open the feed ball valve; Step 5: Start the quantitative feeding system and close the feeding ball valve after the feeding is completed; Step 6: After the reactor air pressure meets the working requirements, open the explosion-proof solenoid valve (No. 3 solenoid valve) and the electronic pressure regulating valve; Step 7: When the value of the electronic pressure regulating valve meets 0.5Mpa＜X＜0.8Mpa, open the hydrogen fuel cell automatic control subroutine; Step 8: When the value of the electronic pressure regulating valve does not satisfy 0.5Mpa < 9. The control method of the control system of the cabinet-type hydrogen production and supply system according to claim 7, characterized in that the steps of the automatic working mode are as follows: Step 1: Monitor the working status and restore the actuator to the preparatory working status; Step 2: Determine whether the liquid level monitoring value of the water storage tank meets the conditions. If not, turn on the water pump to add water. If satisfied, go to the next step; Step 3: Open the No. 1 connector and determine whether the liquid level monitoring value of the pressure balance tank meets the conditions. If so, proceed to the next step; Step 4: Close the No. 1 connector, open the No. 2 connector, open the feed ball valve, and press the air pressure pump to determine whether the liquid level detection value of the reaction tank meets the conditions and proceed to the next step; Step 5: The automatic feeding system starts working; Step 6: After the feeding is completed, the feeding ball valve is closed, and the air pressure pump begins to release pressure. It is judged whether the liquid level monitoring value of the pressure balance tank meets the conditions, and if so, proceed to the next step; Step 7: The air pressure pump stops working, and the No. 2 connector is closed at the same time, waiting for the reaction; Step 8: Determine whether the pressure monitoring value of the reaction tank meets the conditions, and if so, proceed to the next step; Step 9: Open the No. 3 connector, and the hydrogen generated by the reaction tank will automatically enter the buffer tank. Open the No. 2 connector, and press the pressure pump to make the pressure in the pressure balance tank 0.5Mpa greater than the reaction tank. Determine whether the liquid level monitoring value of the reaction tank meets the conditions. , if satisfied, go to the next step; Step 10: Close connectors No. 2 and No. 3, and the pressure pump begins to release pressure until the pressure detection value in the pressure balance tank is 0.0Mpa. Close the pressure pump; at the same time, open the electronic pressure regulating valve and start the hydrogen fuel cell automatic control subunit; Step 11: Determine whether the buffer tank pressure detection value meets the conditions, and if so, proceed to the next step; Step 12: Open the No. 2 connector and determine whether the liquid level detection value of the pressure balance tank meets the conditions. If so, proceed to the next step; Step 13: Close the No. 2 connector, open the discharge ball valve, and close the discharge ball valve after a few seconds; Step 14: Start the water circulation subsystem and turn on the water pump to add water to the water storage tank; Step 15: Determine whether the working time meets the conditions. If not, return to step one. If it is, the automatic working mode will end. It will automatically enter standby mode 30 seconds after stopping working. 10. The control method of the control system of the cabinet-type hydrogen production and supply system according to claim 9, characterized in that: the specific work flow of the hydrogen fuel cell automatic control subunit is as follows: detecting the hydrogen gas intake of the hydrogen fuel cell When the pressure at the inlet is within the range of 0.5Mpa＜ When the air pressure is insufficient, open the air outlet to discharge, then close the air outlet and open the air inlet to re-intake air; if the air inlet pressure is less than the working pressure range, the hydrogen fuel cell will stop air intake; if the hydrogen fuel cell is actively closed, the fan group Increase the speed to expel the remaining gas inside.