Automatic control system for hydrogen refueling station

Abstract

An automatic control system for a hydrogen refueling station comprises a controller and multiple types of sensors which are electrically connected, and the sensors are used for monitoring pressure parameters, flow parameters and temperature parameters of hydrogen of the hydrogen refueling station; the controller is used for receiving the monitored pressure parameters, flow parameters and temperature parameters and analyzing and processing the parameters in real time so as to realize hydrogen leakage protection, overpressure protection and temperature protection of the hydrogen refueling station; the sensor is connected with the controller through a Modbus or a CAN (Controller Area Network) bus; the sensors comprise a temperature sensor, a pressure sensor and a flow meter, the temperature sensor and the pressure sensor are respectively arranged in a gas discharge column, a compressor and a heat exchanger of the hydrogen refueling station, and the flow meter is arranged in a hydrogen storage bottle group and a hydrogen refueling machine.

Description

Technical field:

[0001] The utility model relates to an automatic control system for a hydrogen refueling station. Background technology:

[0002] Hydrogen energy is the chemical energy released by the chemical reaction of hydrogen and oxygen. It is a secondary clean energy source with a high combustion calorific value, which is 3 times that of gasoline, 3.9 times that of alcohol, and 4.5 times that of coke. The product of hydrogen combustion is water, which is the cleanest energy in the world.

[0003] With the rapid development of hydrogen energy technology, hydrogen refueling stations, as key facilities for hydrogen supply, have a direct impact on the promotion and application of hydrogen energy due to their operating efficiency and safety. Currently, most hydrogen refueling stations still use traditional manual or semi-automatic control methods for hydrogen refueling operations, with slow overall response time, inability to fully utilize resources, cumbersome operating procedures, and major safety hazards. Utility model content:

[0004] The embodiment of the present utility model provides an automatic control system for a hydrogen refueling station, which has a reasonable structural design, is based on the integrated control function of a PLC controller, and cooperates with multiple types of sensor components. It can automatically monitor, analyze data and sequentially control the hydrogen unloading process and hydrogen refueling process of the hydrogen refueling station in real time, simplify the hydrogen refueling operation steps, and significantly improve the operating efficiency and operational safety of the hydrogen refueling station, thereby making full use of hydrogen energy resources and solving the problems existing in the prior art.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] An automatic control system for a hydrogen refueling station, the control system comprising a controller and multiple types of sensors electrically connected to each other, the sensors being used to monitor the pressure, flow, and temperature parameters of hydrogen at the hydrogen refueling station; the controller being used to receive the monitored pressure, flow, and temperature parameters and to analyze and process them in real time to implement hydrogen leakage protection, overpressure protection, and temperature protection at the hydrogen refueling station; the sensors being connected to the controller via a Modbus or CAN bus;

[0007] The sensors include a temperature sensor, a pressure sensor and a flow meter. The temperature sensor and pressure sensor are respectively arranged in the gas unloading column, the compressor and the heat exchanger of the hydrogen filling station, and the flow meter is arranged in the hydrogen storage bottle group and the hydrogen filling machine.

[0008] The controller is also electrically connected to a timer, a radiator and a voice alarm. The timer is used to transmit a clock pulse signal to the controller to achieve real-time monitoring of multiple types of parameters; the radiator is used to dissipate heat and cool the equipment in the hydrogen station using water cooling; and the voice alarm is used to issue a voice alarm message when an abnormal condition occurs in the hydrogen station.

[0009] The controller is connected to a host computer and a display screen via a communication line. The host computer is used to receive hydrogen station parameters uploaded by the controller, and the display screen is used to display a user interaction interface to display real-time data and facilitate user control.

[0010] The controller is a PLC controller, model S7-1200, and is provided with multiple pins. The controller is connected to the temperature sensor through pin Q1.7, the controller is connected to the pressure sensor through pin Q1.5, the controller is connected to the voice alarm through pin Q1.2, the controller is connected to the flow meter through pin Q1.0, the controller is connected to the radiator through pins Q0.6 and Q0.4, and the controller is connected to the timer through pin Q0.2.

[0011] A data acquisition unit may be provided between the controller and the sensor. The data acquisition unit is an AD converter to collect, convert and transmit the monitored pressure parameters, flow parameters and temperature parameters to the controller.

[0012] The utility model adopts the above structure, monitors the pressure parameters, flow parameters and temperature parameters of hydrogen in the hydrogen filling station through multiple types of sensors, receives the monitored pressure parameters, flow parameters and temperature parameters through the controller, so as to realize hydrogen leakage protection, overpressure protection and temperature protection of the hydrogen filling station; transmits clock pulse signals to the controller through the timer to realize real-time monitoring of multiple types of parameters, uses water cooling to dissipate heat and cool down the equipment of the hydrogen filling station through the radiator, and sends voice alarm information through the voice alarm when an abnormal situation occurs in the hydrogen filling station. The utility model has the advantages of simplicity, practicality, efficiency and reliability. Description of the drawings:

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 This is the electrical schematic diagram of the controller of the present utility model.

[0015] Figure 3 This is the electrical principle diagram of the pressure sensor of the present utility model.

[0016] Figure 4 This is the electrical schematic diagram of the temperature sensor of the present utility model.

[0017] Figure 5 This is the electrical schematic diagram of the voice alarm of the present utility model.

[0018] Figure 6 This is the electrical principle diagram of the radiator of the present utility model.

[0019] Figure 7 This is the electrical principle diagram of the timer of the present utility model. Specific implementation method:

[0020] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0021] like Figure 1-7 As shown in , an automatic control system for a hydrogen refueling station, the control system includes an electrically connected controller and multiple types of sensors, the sensors are used to monitor the pressure parameters, flow parameters and temperature parameters of hydrogen in the hydrogen refueling station; the controller is used to receive the monitored pressure parameters, flow parameters and temperature parameters and analyze and process them in real time to achieve hydrogen leakage protection, overpressure protection and temperature protection of the hydrogen refueling station; the sensors are connected to the controller via Modbus or CAN bus;

[0022] The sensors include a temperature sensor, a pressure sensor and a flow meter. The temperature sensor and pressure sensor are respectively arranged in the gas unloading column, the compressor and the heat exchanger of the hydrogen filling station, and the flow meter is arranged in the hydrogen storage bottle group and the hydrogen filling machine.

[0023] The controller is also electrically connected to a timer, a radiator and a voice alarm. The timer is used to transmit a clock pulse signal to the controller to achieve real-time monitoring of multiple types of parameters; the radiator is used to dissipate heat and cool the equipment in the hydrogen station using water cooling; and the voice alarm is used to issue a voice alarm message when an abnormal condition occurs in the hydrogen station.

[0024] The controller is connected to a host computer and a display screen via a communication line. The host computer is used to receive hydrogen station parameters uploaded by the controller, and the display screen is used to display a user interaction interface to display real-time data and facilitate user control.

[0025] The controller is a PLC controller, model S7-1200, and is provided with multiple pins. The controller is connected to the temperature sensor through pin Q1.7, the controller is connected to the pressure sensor through pin Q1.5, the controller is connected to the voice alarm through pin Q1.2, the controller is connected to the flow meter through pin Q1.0, the controller is connected to the radiator through pins Q0.6 and Q0.4, and the controller is connected to the timer through pin Q0.2.

[0026] A data acquisition unit may be provided between the controller and the sensor. The data acquisition unit is an AD converter to collect, convert and transmit the monitored pressure parameters, flow parameters and temperature parameters to the controller.

[0027] The working principle of an automatic control system for a hydrogen refueling station in an embodiment of the present invention is: based on the integrated control function of the PLC controller, in conjunction with multiple types of sensor components, it can automatically monitor, analyze data and sequentially control the hydrogen unloading process and hydrogen refueling process of the hydrogen refueling station in real time, simplify the hydrogen refueling operation steps, and significantly improve the operating efficiency and operational safety of the hydrogen refueling station, thereby making full use of hydrogen energy resources.

[0028] In the overall solution, the control system includes an electrically connected controller and multiple types of sensors. The sensors are used to monitor the pressure, flow, and temperature parameters of hydrogen in the hydrogen refueling station. The controller is used to receive the monitored pressure, flow, and temperature parameters and analyze and process them in real time to implement hydrogen leakage protection, overpressure protection, and temperature protection for the hydrogen refueling station. The sensors are connected to the controller via Modbus or CAN bus.

[0029] The sensors include a temperature sensor, a pressure sensor and a flow meter. The temperature sensor and pressure sensor are respectively arranged in the gas unloading column, the compressor and the heat exchanger of the hydrogen filling station, and the flow meter is arranged in the hydrogen storage bottle group and the hydrogen filling machine.

[0030] The core component of this application is the controller, which is a PLC controller with model S7-1200. Multiple pins are provided on the controller. The controller is connected to the temperature sensor through pin Q1.7, the controller is connected to the pressure sensor through pin Q1.5, the controller is connected to the voice alarm through pin Q1.2, the controller is connected to the flow meter through pin Q1.0, the controller is connected to the radiator through pins Q0.6 and Q0.4, and the controller is connected to the timer through pin Q0.2; thus, an overall hardware circuit is formed, and the above-mentioned overall hardware circuit is relied upon to realize real-time automatic monitoring, data analysis and sequential control of the hydrogen unloading process and hydrogenation process of the hydrogen refueling station.

[0031] Specifically, the model of the temperature sensor is SHT20, and the model of the pressure sensor is MI K-P300; the model of the voice alarm is WT588D, and 20 pins are provided on the voice alarm. Pin 7 of the voice alarm is connected to pin Q1.2 of the controller, a first capacitor is provided on the voice alarm, a speaker is provided on pin 16 of the voice alarm, and is grounded through a second resistor and a second capacitor connected in parallel, and an LED light and a first resistor are provided on pin 11 of the voice alarm to display the usage status of the voice alarm.

[0032] The model of the radiator is TC4427, and there are 8 pins on the radiator. The second pin of the radiator is connected to the Q0.6 pin of the controller, and the fourth pin of the radiator is connected to the Q0.4 pin of the controller. The first resistor and the second resistor are connected in parallel on the fifth pin of the radiator, and a MOS tube is provided on the second resistor. A condenser is provided on the MOS tube.

[0033] The model of the timer is DS1302, and there are 8 pins on the timer. Pin 6 and pin 7 of the timer are short-circuited, and a fourth resistor and a fourth capacitor are provided between pin 6 and pin 7. Pin 7 of the timer is connected to pin Q0.2 of the controller.

[0034] For controllers, data preprocessing can be performed to remove noise and outliers, and the operating status of the equipment can be judged by set thresholds to identify faulty or abnormal equipment. At the same time, trend analysis can be performed with reference to historical data and current status to provide a basis for subsequent decision-making.

[0035] Based on the data analysis results, the controller will automatically adjust the working status of the equipment, including: starting and shutting down hydrogen pumps, compressors, cooling devices and other equipment; according to the preset priority and logical sequence, ensuring the stability and continuity of the hydrogenation process.

[0036] When starting the hydrogen pump, the controller must first ensure that the hydrogen pressure in the storage tank is within a safe range, and then gradually increase the output flow of the hydrogen pump to avoid a sudden pressure increase.

[0037] In this application, the specific multiple protection measures include hydrogen leak detection: that is, real-time monitoring of hydrogen concentration through gas sensors. Once a leak is detected, the system will immediately shut down and alarm; overpressure protection: when the system pressure is detected to exceed the set threshold, the system will automatically release the pressure to ensure equipment safety; temperature monitoring: monitoring the operating temperature of the equipment to prevent safety accidents caused by overheating.

[0038] When safety protection measures are triggered, the control system will automatically and accurately perform corresponding processing, such as shutting down, issuing alarms, and initiating emergency measures.

[0039] The user interface of this application allows users to monitor the control system status in real time and view the changing trends of various parameters. At the same time, the user interface can also support manual control, allowing users to manually start and stop the hydrogenation equipment and adjust various parameters.

[0040] Furthermore, the control system also has data recording and analysis functions, which facilitates users to conduct troubleshooting and performance evaluation.

[0041] The workflow of this application is as follows: in the initial state, the control system is in standby mode, monitoring the operating status of the equipment, and the sensor sends the monitoring data to the controller in real time; when the user issues a hydrogen refueling instruction, the controller first performs status monitoring after receiving the instruction to confirm that the hydrogen pressure and flow of the hydrogen storage bottle group are within a safe range; then the controller automatically starts the hydrogen pump based on the data analysis results, and gradually increases the flow until the set hydrogen refueling amount is reached.

[0042] During the hydrogen refueling process, the system monitors the changes in hydrogen pressure and flow in real time. If any abnormal situation is found, the system will immediately take measures to adjust the operating status of the hydrogen pump or shut down the hydrogen pump. If the system detects a hydrogen leak, it will immediately trigger an alarm, automatically cut off the power supply, and stop the operation of all equipment. At the same time, the system is also equipped with an emergency exhaust component to ensure that the pressure can be safely released in the event of overpressure.

[0043] This application can independently control and monitor the hydrogen unloading process and the hydrogenation process, which are independent of each other and will not interfere with each other, ensuring the smooth and accurate operation of the two processes.

[0044] It should be noted that users can monitor the hydrogenation status in real time through the user interface, and display the current pressure, flow, temperature and equipment operating status on the user interface. It also supports users to manually adjust hydrogenation parameters and data recording to facilitate subsequent analysis and adjustment.

[0045] To sum up, an automatic control system for a hydrogen refueling station in an embodiment of the present invention is based on the integrated control function of a PLC controller, and cooperates with multiple types of sensor components. It can automatically monitor, analyze data and sequentially control the hydrogen unloading process and hydrogen refueling process of the hydrogen refueling station in real time, simplify the hydrogen refueling operation steps, and significantly improve the operating efficiency and operational safety of the hydrogen refueling station, thereby making full use of hydrogen energy resources and ensuring the sustainable development of hydrogen energy.

[0046] The above specific implementation methods cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or transformation made to the implementation methods of the present utility model falls within the protection scope of the present utility model.

[0047] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. An automatic control system for a hydrogen refueling station, characterized by: The control system includes a controller and multiple types of sensors that are electrically connected. The sensors are used to monitor the pressure, flow, and temperature parameters of hydrogen at the hydrogen refueling station. The controller is used to receive the monitored pressure, flow, and temperature parameters and analyze and process them in real time to implement hydrogen leakage protection, overpressure protection, and temperature protection at the hydrogen refueling station. The sensors are connected to the controller via a Modbus or CAN bus. The sensors include a temperature sensor, a pressure sensor and a flow meter. The temperature sensor and pressure sensor are respectively arranged in the gas unloading column, the compressor and the heat exchanger of the hydrogen filling station, and the flow meter is arranged in the hydrogen storage bottle group and the hydrogen filling machine.

2. The automatic control system for a hydrogen refueling station according to claim 1, characterized in that: The controller is also electrically connected to a timer, a radiator and a voice alarm. The timer is used to transmit a clock pulse signal to the controller to achieve real-time monitoring of multiple types of parameters; the radiator is used to dissipate heat and cool the equipment in the hydrogen station using water cooling; and the voice alarm is used to issue a voice alarm message when an abnormal condition occurs in the hydrogen station.

3. The automatic control system for a hydrogen refueling station according to claim 1, characterized in that: The controller is connected to a host computer and a display screen via a communication line. The host computer is used to receive hydrogen station parameters uploaded by the controller, and the display screen is used to display a user interaction interface to display real-time data and facilitate user control.

4. The automatic control system for a hydrogen refueling station according to claim 2, characterized in that: The controller is a PLC controller, model S7-1200, and is provided with multiple pins. The controller is connected to the temperature sensor through pin Q1.7, the controller is connected to the pressure sensor through pin Q1.5, the controller is connected to the voice alarm through pin Q1.2, the controller is connected to the flow meter through pin Q1.0, the controller is connected to the radiator through pins Q0.6 and Q0.4, and the controller is connected to the timer through pin Q0.

2.

5. The automatic control system for a hydrogen refueling station according to claim 1, characterized in that: A data acquisition unit may be provided between the controller and the sensor. The data acquisition unit is an AD converter to collect, convert and transmit the monitored pressure parameters, flow parameters and temperature parameters to the controller.

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