Automatic control method for hydrogen refueling station

Abstract

An automatic control method for a hydrogen refueling station comprises the following steps: a controller enters a working state, transmits a control instruction to a multi-type sensor, and monitors a pressure parameter, a flow parameter and a temperature parameter of hydrogen of the hydrogen refueling station; the controller receives the monitored pressure parameters, flow parameters and temperature parameters, displays the parameters on a user interaction interface, and analyzes and processes the parameters in real time; manual control is carried out through a user interaction interface, hydrogenation related parameters are adjusted, data recording is carried out at the same time, and subsequent hydrogenation analysis and adjustment are facilitated; when abnormal data occurs or hydrogen leakage is monitored, the controller automatically triggers an alarm and cuts off a power supply, operation of all equipment is stopped, and meanwhile, an emergency exhaust assembly is arranged to ensure that pressure can be safely released when overpressure occurs.

Description

Technical field:

[0001] The invention relates to an automatic control method 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 through their operating efficiency and safety. At present, 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. Summary of the invention:

[0004] The embodiment of the present invention provides an automatic control method for a hydrogen refueling station. The method is reasonably designed, based on the integrated control function of a PLC controller, in conjunction with multiple types of sensor components, and in accordance with established method steps and corresponding control procedures, it can automatically monitor, analyze data and sequentially control the hydrogen unloading process and hydrogenation process of the hydrogen refueling station in real time, simplify the hydrogenation operation steps, provide multiple safety protection mechanisms, 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 method for a hydrogen refueling station, the control method comprising the following steps:

[0007] S1, the controller enters the working state and transmits control instructions to multiple types of sensors to monitor the pressure parameters, flow parameters and temperature parameters of hydrogen in the hydrogen refueling station;

[0008] S2, the controller receives the monitored pressure parameters, flow parameters and temperature parameters, displays them on the user interface and performs real-time analysis and processing to achieve hydrogen leakage protection, overpressure protection and temperature protection of the hydrogen refueling station;

[0009] S3, after receiving the hydrogenation instruction from the user, the controller first performs status monitoring to confirm that the hydrogen pressure and flow of the hydrogen storage bottle group are within a safe range. According to the data analysis results, the hydrogen pump is automatically started and the flow rate is gradually increased until the set hydrogenation amount is reached. At the same time, the controller monitors the changes in hydrogen pressure and flow rate in real time. If an abnormal situation occurs, the controller immediately adjusts the operating status of the hydrogenation pump or shuts down the hydrogenation pump;

[0010] S4, manually control through the user interface to adjust hydrogenation related parameters and record data to facilitate subsequent hydrogenation analysis and adjustment;

[0011] S5: When abnormal data appears or hydrogen leakage is detected, the controller automatically triggers an alarm and cuts off the power supply, stopping the operation of all equipment. At the same time, an emergency exhaust component is configured to ensure that the pressure can be safely released in the event of overpressure.

[0012] The sensor is connected to the controller via Modbus or CAN bus.

[0013] The controller is 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 down the equipment in the hydrogen station by water cooling; the voice alarm is used to issue a voice alarm message when an abnormal condition occurs in the hydrogen station.

[0014] The controller is connected to a host computer and a display screen via a communication line. The host computer is used to receive the 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.

[0015] The controller is a PLC controller, whose model is 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.

[0016] The present invention adopts the above method, 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 a controller, so as to realize hydrogen leakage protection, overpressure protection and temperature protection of the hydrogen filling station; transmits a clock pulse signal to the controller through a timer to realize real-time monitoring of multiple types of parameters, uses a radiator to dissipate heat and cool the equipment of the hydrogen filling station by water cooling, and sends a voice alarm message through a voice alarm when an abnormal condition occurs in the hydrogen filling station. According to the data analysis structure, the hydrogen pump is automatically started to gradually increase the flow rate until the set hydrogen filling amount is reached. The present invention has the advantages of precision, high efficiency and ease of use. Description of the drawings:

[0017] Figure 1 It is a schematic diagram of the process of the present invention.

[0018] Figure 2 It is the electrical schematic diagram of the controller of the present invention.

[0019] Figure 3 It is the electrical principle diagram of the pressure sensor of the present invention.

[0020] Figure 4 It is the electrical principle diagram of the temperature sensor of the present invention.

[0021] Figure 5 The figure is an electrical schematic diagram of the voice alarm of the present invention.

[0022] Figure 6 It is the electrical principle diagram of the radiator of the present invention.

[0023] Figure 7 It is the electrical principle diagram of the timer of the present invention. Specific implementation method:

[0024] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0025] like Figure 1-7 As shown in, an automatic control method for a hydrogen refueling station, the control method comprises the following steps:

[0026] S1, the controller enters the working state and transmits control instructions to multiple types of sensors to monitor the pressure parameters, flow parameters and temperature parameters of hydrogen in the hydrogen refueling station;

[0027] S2, the controller receives the monitored pressure parameters, flow parameters and temperature parameters, displays them on the user interface and performs real-time analysis and processing to achieve hydrogen leakage protection, overpressure protection and temperature protection of the hydrogen refueling station;

[0028] S3, after receiving the hydrogenation instruction from the user, the controller first performs status monitoring to confirm that the hydrogen pressure and flow of the hydrogen storage bottle group are within a safe range. According to the data analysis results, the hydrogen pump is automatically started and the flow rate is gradually increased until the set hydrogenation amount is reached. At the same time, the controller monitors the changes in hydrogen pressure and flow rate in real time. If an abnormal situation occurs, the controller immediately adjusts the operating status of the hydrogenation pump or shuts down the hydrogenation pump;

[0029] S4, manually control through the user interface to adjust hydrogenation related parameters and record data to facilitate subsequent hydrogenation analysis and adjustment;

[0030] S5: When abnormal data appears or hydrogen leakage is detected, the controller automatically triggers an alarm and cuts off the power supply, stopping the operation of all equipment. At the same time, an emergency exhaust component is configured to ensure that the pressure can be safely released in the event of overpressure.

[0031] The sensor is connected to the controller via Modbus or CAN bus.

[0032] The controller is 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 down the equipment in the hydrogen station by water cooling; the voice alarm is used to issue a voice alarm message when an abnormal condition occurs in the hydrogen station.

[0033] The controller is connected to a host computer and a display screen via a communication line. The host computer is used to receive the 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.

[0034] The controller is a PLC controller, whose model is 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.

[0035] The working principle of an automatic control method 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, in accordance with established method steps and corresponding control procedures, the hydrogen unloading process and hydrogenation process of the hydrogen refueling station can be automatically monitored, data analyzed and sequentially controlled in real time, which simplifies the hydrogenation operation steps, provides multiple safety protection mechanisms, and significantly improves the operating efficiency and operational safety of the hydrogen refueling station, thereby making full use of hydrogen energy resources.

[0036] In the overall scheme, the control method includes the following steps: the controller enters the working state, transmits control instructions to multiple types of sensors, and monitors the pressure parameters, flow parameters and temperature parameters of hydrogen in the hydrogen filling station; the controller receives the monitored pressure parameters, flow parameters and temperature parameters, displays them on the user interaction interface, and analyzes and processes them in real time to achieve hydrogen leakage protection, overpressure protection and temperature protection of the hydrogen filling station; after receiving the hydrogenation instruction issued by the user, the controller first performs status monitoring to confirm that the hydrogen pressure and flow of the hydrogen storage bottle group are within a safe range, and automatically starts the hydrogen pump according to the data analysis results, gradually increases the flow until the set hydrogenation amount is reached, and the controller monitors the changes in hydrogen pressure and flow in real time. If an abnormal situation occurs, the controller immediately adjusts the operating state of the hydrogenation pump or shuts down the hydrogenation pump; manual control is performed through the user interaction interface to adjust the hydrogenation related parameters, and data is recorded at the same time to facilitate subsequent hydrogenation analysis and adjustment; when abnormal data occurs or hydrogen leakage is detected, the controller automatically triggers an alarm and cuts off the power supply, stops the operation of all equipment, and configures an emergency exhaust component to ensure that the pressure can be safely released when overpressure occurs.

[0037] As for the sensors, they mainly include temperature sensors, pressure sensors and flow meters. The temperature sensors and pressure sensors are respectively arranged in the gas unloading column, compressor and heat exchanger of the hydrogen filling station, and the flow meter is arranged in the hydrogen storage bottle group and the hydrogen filling machine.

[0038] For the control link of the present application, the core component is the controller, and a timer, a radiator and a voice alarm are also electrically connected to the controller. The timer is used to transmit a clock pulse signal to the controller to realize real-time monitoring of multiple types of parameters; the radiator is used to use water cooling to dissipate heat and cool down the equipment in the hydrogen refueling station; the voice alarm is used to issue a voice alarm message when an abnormal condition occurs in the hydrogen refueling station.

[0039] Specifically, the controller is a PLC controller, and its model is S7-1200. A plurality of 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.

[0040] 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 No. 7 of the voice alarm is connected to pin No. Q1.2 of the controller, and a first capacitor is provided on the voice alarm. A speaker is provided on pin No. 16 of the voice alarm, and is grounded through a second resistor and a second capacitor connected in parallel. Pin No. 11 of the voice alarm is provided with an LED light and a first resistor to display the usage status of the voice alarm.

[0041] The model of the radiator is TC4427, and 8 pins are arranged on the radiator. The second pin of the radiator is connected to the Q0.6 pin of the controller, the fourth pin of the radiator is connected to the Q0.4 pin of the controller, the fifth pin of the radiator is provided with a first resistor and a second resistor connected in parallel, a MOS tube is arranged on the second resistor, and a condenser is arranged on the MOS tube.

[0042] The model of the timer is DS1302, and 8 pins are provided 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.

[0043] For the controller, data preprocessing can be performed to remove noise and outliers, and the operating status of the equipment can be judged by the set threshold 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.

[0044] 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; ensuring the stability and continuity of the hydrogenation process according to preset priorities and logical sequences.

[0045] The multiple protection measures of this application 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 it is detected that the system pressure exceeds the set threshold, the system will automatically release the pressure to ensure equipment safety; temperature monitoring: monitor the operating temperature of the equipment to prevent safety accidents caused by overheating.

[0046] When safety protection measures are triggered, the control system will automatically and accurately perform corresponding processing, such as shutting down, alarming, and initiating emergency measures.

[0047] The user interface of the present application allows the user 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 the user to manually start and stop the hydrogenation equipment and adjust various parameters.

[0048] Furthermore, the control system also has data recording and analysis functions, which facilitates users to conduct troubleshooting and performance evaluation.

[0049] 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 command, the controller first performs status monitoring after receiving the command 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 rate until the set hydrogen refueling amount is reached.

[0050] 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.

[0051] 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, thereby ensuring the smooth and accurate operation of the two processes.

[0052] 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.

[0053] To sum up, an automatic control method for a hydrogen refueling station in an embodiment of the present invention is based on the integrated control function of a PLC controller, in conjunction with multiple types of sensor components, and in accordance with established method steps and corresponding control procedures, can perform real-time automatic monitoring, data analysis and sequential control of the hydrogen unloading process and hydrogenation process of the hydrogen refueling station, simplify the hydrogenation operation steps, provide multiple safety protection mechanisms, and significantly improve the operating efficiency and operational safety of the hydrogen refueling station, thereby making full use of hydrogen energy resources.

[0054] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any substitution, improvement or change made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0055] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. An automatic control method for a hydrogen refueling station, characterized in that: The control method comprises the following steps: S1, the controller enters the working state and transmits control instructions to multiple types of sensors to monitor the pressure parameters, flow parameters and temperature parameters of hydrogen in the hydrogen refueling station; S2, the controller receives the monitored pressure parameters, flow parameters and temperature parameters, displays them on the user interface and performs real-time analysis and processing to achieve hydrogen leakage protection, overpressure protection and temperature protection of the hydrogen refueling station; S3, after receiving the hydrogenation instruction from the user, the controller first performs status monitoring to confirm that the hydrogen pressure and flow of the hydrogen storage bottle group are within a safe range. According to the data analysis results, the hydrogen pump is automatically started and the flow rate is gradually increased until the set hydrogenation amount is reached. At the same time, the controller monitors the changes in hydrogen pressure and flow rate in real time. If an abnormal situation occurs, the controller immediately adjusts the operating status of the hydrogenation pump or shuts down the hydrogenation pump; S4, manually control through the user interface to adjust hydrogenation related parameters and record data to facilitate subsequent hydrogenation analysis and adjustment; S5: When abnormal data appears or hydrogen leakage is detected, the controller automatically triggers an alarm and cuts off the power supply, stopping the operation of all equipment. At the same time, an emergency exhaust component is configured to ensure that the pressure can be safely released in the event of overpressure.

2. The automatic control method for a hydrogen refueling station according to claim 1, characterized in that: The sensor is connected to the controller via Modbus or CAN bus.

3. The automatic control method for a hydrogen refueling station according to claim 1, characterized in that: The controller is 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 down the equipment in the hydrogen station by water cooling; the voice alarm is used to issue a voice alarm message when an abnormal condition occurs in the hydrogen station.

4. The automatic control method 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 the 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.

5. The automatic control method for a hydrogen refueling station according to claim 3, characterized in that: The controller is a PLC controller, whose model is 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.

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