Aviation oil refueling device

Abstract

The aviation oil refueling device comprises a refueling vehicle, a valve control device, a flow meter and a controller, the refueling vehicle is provided with a refueling pipeline, the refueling pipeline is used for connecting an oil storage piece and aviation equipment, and a pneumatic control valve is arranged in the refueling pipeline. The valve control device is connected with the pneumatic control valve and used for controlling opening and closing of the pneumatic control valve. The flow meter is arranged on the refueling pipeline and used for detecting the quantity of refueling oil entering aviation equipment and the flow speed of aviation oil. The controller is electrically connected with the flow meter and the valve control device and used for controlling the valve control device and the pneumatic control valve to be disconnected when the oil filling amount is smaller than the expected oil filling amount and the difference value between the oil filling amount and the expected oil filling amount is the overshoot amount. Wherein the overshoot is related to the flow velocity. According to the aviation fuel refueling device, refueling can be automatically controlled to be finished, and accurate control over the refueling amount can be achieved.

Description

Technical Field

[0001] This application relates to the technical field of aviation fuel refueling, and particularly to an aviation fuel refueling device. Background Art

[0002] With the increasing demand for air travel, airports require efficient refueling systems to support the rapid refueling of a large number of aircraft, so as to reduce waiting time and improve flight punctuality. Aviation fuel refueling devices usually need to perform quantitative refueling, which is crucial for aviation safety, operation efficiency, and the performance of aircraft. Quantitative refueling means that the refueling volume each time needs to be precisely controlled, neither too little nor too much, to ensure that the aircraft can obtain appropriate fuel supply during flight, while also avoiding waste and other potential problems. In the related technologies of existing aircraft refueling trucks, the control of the refueling volume during refueling operations completely relies on the work experience of refueling personnel. This traditional aircraft refueling method is not only inconvenient to operate, inefficient, but also has low refueling accuracy. Summary of the Invention

[0003] This application provides an aviation fuel refueling device to solve at least some problems in the related technologies.

[0004] The aviation fuel refueling device provided by this application includes:

[0005] A refueling truck, provided with a refueling pipeline, the refueling pipeline is used to connect a fuel storage member and an aviation device, and an air-controlled valve is provided in the refueling pipeline;

[0006] A valve control device, connected to the air-controlled valve, for controlling the opening and closing of the air-controlled valve;

[0007] A flowmeter, provided in the refueling pipeline, for detecting the refueling volume entering the aviation device and the flow rate of the aviation fuel;

[0008] A controller, electrically connected to the flowmeter and the valve control device, for controlling the disconnection between the valve control device and the air-controlled valve when the refueling volume is less than the expected refueling volume, and the difference between the refueling volume and the expected refueling volume is the overshoot amount; wherein, the overshoot amount is related to the flow rate.

[0009] Optionally, the valve control device includes a gas source, the air-controlled valve includes a valve body and a valve core located inside the valve body, a channel for the aviation fuel to flow is provided in the valve body, an air inlet is provided on the valve body, and the air inlet is connected to the valve core; the valve core includes a spring and a plugging member connected to the spring; wherein, the gas source is connected to the air inlet in a switchable manner, when the air inlet is disconnected from the gas source, the plugging member plugs the channel; when the air inlet is communicated with the gas source, the plugging member releases the plugging of the channel.

[0010] Optionally, the aviation fuel filling device further includes an input unit, which includes a button for obtaining the expected fuel filling amount, and the controller is electrically connected to the input unit.

[0011] Optionally, the aviation fuel filling device further includes an input unit, which is electrically connected to the controller. The input unit is used to obtain the remaining fuel amount and flight mileage information of the aviation equipment and send them to the controller, and the controller is used to determine the expected fuel filling amount according to the remaining fuel amount and the flight mileage information.

[0012] Optionally, the valve control device includes a gas source, a pipeline and a gas source switch. The pipeline is connected between the gas source and the pneumatic control valve, and the gas source switch is used to control the on-off between the pneumatic control valve and the gas source; the controller is used to control the on-off between the gas source and the pipeline or the on-off between the gas source switch and the power supply; and when the filled fuel amount is less than the expected fuel filling amount, and the difference between the filled fuel amount and the expected fuel filling amount is the overshoot amount, control the disconnection between the gas source and the pipeline or control the disconnection between the gas source switch and the power supply.

[0013] Optionally, the gas source switch is a non-self-locking switch; wherein, the gas source switch is turned on when the pressing force applied to it exceeds a set value, and the gas source switch is turned off when the pressing force applied to it does not exceed the set value.

[0014] Optionally, the controller includes:

[0015] An expected fuel filling amount acquisition module for obtaining the expected fuel filling amount;

[0016] An overshoot amount determination module, which is electrically connected to the flowmeter, for determining the overshoot amount according to the flow rate;

[0017] A judgment module, which is electrically connected to the flowmeter, the overshoot amount determination module and the expected fuel filling amount acquisition module, and is used to control the disconnection between the valve control device and the pneumatic control valve when the filled fuel amount is less than the expected fuel filling amount, and the difference between the filled fuel amount and the expected fuel filling amount is the overshoot amount.

[0018] Optionally, the controller stores the corresponding relationship between the calibrated flow rate and the calibrated overshoot amount. The controller is used to determine the corresponding calibrated flow rate and calibrated overshoot amount according to the current flow rate of the aviation fuel, and use the determined calibrated overshoot amount as the overshoot amount.

[0019] Optionally, the controller stores the corresponding relationship between the calibrated overshoot, the calibrated flow rate, and the calibrated system delay. The controller is configured to determine the corresponding calibrated flow rate, calibrated system delay, and calibrated overshoot based on the current flow rate of the aviation fuel and the system delay, and use the determined calibrated overshoot as the overshoot.

[0020] Optionally, the controller stores the calculation relationship between the flow rate and the overshoot. The controller is configured to obtain the overshoot based on the current flow rate of the aviation fuel through the calculation relationship.

[0021] Optionally, the controller stores the calculation relationship between the overshoot, the flow rate, and the system delay. The controller is configured to obtain the overshoot based on the current flow rate of the aviation fuel and the current system delay through the calculation relationship.

[0022] The aviation fuel filling device provided in this application can improve the degree of automation during the filling process and reduce the manual operation intensity by setting a controller and electrically connecting the controller to a flow meter and a valve control device, which is used to automatically control the disconnection between the valve control device and the pneumatic control valve after filling is completed, ending the filling operation. And by determining the overshoot during the filling process, when the distance from the predetermined filling volume is the overshoot, the controller controls the disconnection between the valve control device and the pneumatic control valve. In this way, the amount of fuel filled during the closing process of the valve of the aviation fuel filling device can be the same as the overshoot, achieving precise control of the filling volume. Description of the Drawings

[0023] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments that conform to this application, and are used together with the specification to explain the principles of this application.

[0024] Figure 1 It is a structural block diagram of the aviation fuel filling device provided by an embodiment of this application;

[0025] Figure 2 It is Figure 1 a schematic structural diagram of the pneumatic control valve shown;

[0026] Figure 3 It is Figure 1 a structural block diagram of the valve control device shown;

[0027] Figure 4 It is a structural block diagram of the aviation fuel filling device provided by another embodiment;

[0028] Figure 5 It is Figure 1 a structural block diagram of the controller shown.

[0029] Reference Signs:

[0030] Aviation fuel filling device 1, fuel filling pipeline 11, oil storage component 12, aviation equipment 13, valve control device 20, gas source 21, gas pipeline 22, gas source switch 23, power supply 24, pneumatic control valve 30, valve body 31, valve core 32, air inlet 33, spring 34, sealing component 35, input unit 60, flowmeter 40, controller 50, expected fuel filling amount acquisition module 51, overshoot amount determination module 52, judgment module 53. Detailed implementation manners

[0031] This application provides an aviation fuel filling device. The following will describe the aviation fuel filling device of this application in detail with reference to the accompanying drawings. Without conflict, the features in the following embodiments and implementation manners can be combined with each other.

[0032] In the related art, a flow display instrument is installed on a fuel filling vehicle. The flow display instrument is connected to a flowmeter and is used to dynamically display the fuel amount filled into the aviation equipment in real time. The fuel filler determines the expected fuel filling amount based on work experience by observing the flow data displayed by the flow display instrument. When the flow data displayed by the flow display instrument is not much different from the expected fuel filling amount, the valve control device is operated to control the pneumatic control valve to close, thereby completing the fuel filling. When the flow data displayed by the flow display instrument is not much different from the expected fuel filling amount, it can either mean that the flow data displayed by the flow display instrument is close to the expected fuel filling amount or that the flow data displayed by the flow display instrument slightly exceeds the expected fuel filling amount. The fuel filling process requires the fuel filler to constantly monitor the flow data, with low intelligence and low control accuracy of the fuel filling amount.

[0033] Please refer to Figure 1 , Figure 1 which is a structural block diagram of the aviation fuel filling device 1 provided by an embodiment of this application. In the Figure 1 illustrated embodiment, the aviation fuel filling device 1 includes a fuel filling vehicle, a valve control device 20, a flowmeter 40, and a controller 50.

[0034] The fuel filling vehicle is provided with a fuel filling pipeline 11. The fuel filling pipeline 11 is used to connect an oil storage component 12 and aviation equipment 13, and a pneumatic control valve 30 is provided in the fuel filling pipeline 11. The valve control device 20 is connected to the pneumatic control valve 30 and is used to control the opening and closing of the pneumatic control valve 30. The flowmeter 40 is disposed in the fuel filling pipeline 11 and is used to detect the filled fuel amount entering the aviation equipment 13 and the flow rate of the aviation fuel. The controller 50 is electrically connected to the flowmeter 40 and the valve control device 20, and is used to control the disconnection between the valve control device 20 and the pneumatic control valve 30 when the filled fuel amount is less than the expected fuel filling amount and the difference between the filled fuel amount and the expected fuel filling amount is the overshoot amount. Among them, the overshoot amount is related to the flow rate.

[0035] The aviation fuel refueling device 1 provided by the present application is provided with a controller 50, and the controller 50 is electrically connected to the flow meter 40 and the valve control device 20, so as to automatically control the valve control device 20 and the gas control valve 30 to be disconnected after the refueling is completed, and the refueling operation is ended, so as to improve the automation degree in the refueling process and reduce the manual work workload. And by determining the overshoot amount in the refueling process, when the distance from the predetermined refueling amount is the overshoot amount, the valve control device 20 and the gas control valve 30 are controlled to be disconnected, so that the refueling amount and the overshoot amount during the valve closing process of the aviation fuel refueling device 1 can be made the same, so as to achieve accurate control of the refueling amount.

[0036] In some embodiments, the controller 50 is a flow display installed on a refueling truck, which is modified. The flow display is connected to the flow meter 40 to obtain the amount of fuel added to the aviation equipment 13 and the flow rate of the aviation fuel. The over-alarm function of the flow display is turned on. When the flow data exceeds the difference between the expected refueling amount and the overshoot amount, the flow display alarms. Specifically, when the flow data does not exceed the difference between the expected refueling amount and the overshoot amount, a port of the flow display outputs the first data. When the flow data exceeds the difference between the expected refueling amount and the overshoot amount, the port of the flow display outputs the second data different from the first data. The port of the flow display is connected to the valve control device 20. When the port of the flow display outputs the second data, the valve control device 20 and the gas control valve 30 can be controlled to be disconnected. At this time, even if the refueling personnel and the valve control device 20 are operated, the gas control valve 30 cannot be opened, thereby ending the refueling.

[0037] In the related art, if quantitative refueling is to be achieved, it is necessary to add process equipment such as control modules and control valves to the refueling truck. However, the aircraft refueling trucks currently in use have a very compact structure and extremely limited space, and it is impossible to add these additional equipment. Changing the design of the refueling truck requires a complete redesign, manufacturing, and testing and finalization, which takes a long time, is costly, and has a huge price. In this patent application, by modifying the existing flow display and making full use of the existing gas-controlled valve 30, valve control device 20, etc. on the refueling truck, the function of quantitative refueling can be achieved without re-setting the quantitative refueling components on the refueling truck. Not only can quantitative refueling be achieved, but it is also easy to use on existing refueling trucks.

[0038] Please refer to Figure 2 , Figure 2 for Figure 1 The structural diagram of the gas-controlled valve is shown in FIG. Figure 2As shown, the pneumatically controlled valve 30 includes a valve body 31 and a valve core 32 located inside the valve body 31. A channel for the aviation fuel to flow is provided inside the valve body 31. Specifically, the valve body 31 includes an upper valve body and a lower valve body, which are fixedly connected to each other. The upper valve body is connected to the oil storage member 12 through the fuel filling pipeline 11, and the lower valve body is connected to the aviation equipment 13 through the fuel filling pipeline 11. Channels for the aviation fuel to flow are provided both inside the upper valve body and the lower valve body, and the part of the channel located inside the upper valve body is communicated with the part of the channel located inside the lower valve body.

[0039] The valve control device 20 includes a gas source 21. An air inlet 33 is provided on the valve body 31. The air inlet 33 is used to be connected to the gas source 21 and the air inlet 33 is connected to the valve core 32. The valve core 32 includes a spring 34 and a plugging member 35 connected to the spring 34. Among them, the gas source 21 is connected to the air inlet 33 in a switchable manner. Among them, the gas source is connected to the air inlet in a switchable manner. When the air inlet is disconnected from the gas source, the plugging member plugs the channel; when the air inlet is communicated with the gas source, the plugging member releases the plugging of the channel.

[0040] In Figure 2 is shown the structure of the pneumatically controlled valve 30 in the open state. At this time, when the air inlet 33 is communicated with the gas source 21, when the plugging member 35 is subjected to the air pressure of the gas source 21, the plugging member 35 moves, the spring 34 deforms, the plugging member 35 releases the plugging of the channel, and the pneumatically controlled valve 30 opens, and refueling operations can be carried out. When the air inlet 33 is disconnected from the gas source 21, the spring 34 is in a normal state, the plugging member 35 plugs the channel, the pneumatically controlled valve 30 closes, and refueling operations cannot be carried out.

[0041] In some embodiments, the outer shell of the pneumatically controlled valve 30 is made of aluminum alloy material. The upper valve body and the lower valve body are sealed and connected with bolts. The valve inner diaphragm divides into a pneumatically controlled pressure chamber and a hydraulically controlled feedback pressure chamber. The spring 34 keeps the pneumatically controlled valve 30 in the static closed position, and the standard pressure in the air chamber can open the pneumatically controlled valve 30.

[0042] Please refer to Figure 3 Figure 3 For Figure 1 shown is the structural block diagram of the valve control device 20. The valve control device 20 includes a gas source 21, a gas pipeline 22 and a gas source switch 23. The gas pipeline 22 is connected between the gas source 21 and the pneumatically controlled valve 30. The gas source switch 23 is used to control the on-off between the pneumatically controlled valve 30 and the gas source 21. When the gas source switch 23 is powered off, the gas source switch 23 cannot be conducted, and thus the gas in the gas source 21 cannot enter the pneumatically controlled valve 30. When the gas source 21 and the gas pipeline 22 are disconnected, for example, the gas in the gas source 21 cannot be injected into the gas pipeline 22, and the gas in the gas source 21 cannot enter the pneumatically controlled valve 30 either.

[0043] ​The controller 50 is used to control the on / off between the gas source 21 and the gas pipeline 22. When the connection between the gas source 21 and the gas pipeline 22 is disconnected, the gas in the gas source 21 cannot enter the gas pipeline 22. Alternatively, the controller 50 is used to control the on / off between the gas source switch 23 and the power supply 24. When the connection between the gas source switch 23 and the power supply 24 is disconnected, the gas control switch cannot be opened, and the gas in the gas pipeline 22 cannot enter the gas control valve 30.

[0044] In this embodiment, when the refueling amount is less than the expected refueling amount and the difference between the refueling amount and the expected refueling amount is the overshoot amount, the controller 50 controls the disconnection between the gas source 21 and the gas pipeline 22 or controls the disconnection between the gas source switch 23 and the power supply 24, so that the connection between the valve control device 20 and the gas control valve 30 is disconnected, and the gas control valve 30 cannot be opened through the valve control device 20 either.

[0045] In the embodiment of the present application, the gas source switch 23 is a non-self-locking switch. Among them, the gas source switch 23 is turned on when the pressing force received exceeds the set value, and is turned off when the pressing force received does not exceed the set value. In this way, during the refueling process, there is always a refueling operator beside, avoiding safety problems caused by unattended management during refueling and improving the safety during aviation refueling.

[0046] In the embodiment of the present application, when the controller 50 controls the disconnection between the valve control device 20 and the gas control valve 30, even if the gas source switch 23 is operated, the gas control valve 30 cannot be disconnected, avoiding that after refueling is completed, the refueling operator operates the gas control switch for refueling, which affects the accuracy of the previous quantitative refueling. If it is determined that additional refueling is required or a new refueling process is to be started, the controller 50 controls the reconnection between the valve control device 20 and the gas control valve 30.

[0047] Please refer to Figure 4 , Figure 4 the structural block diagram of the aviation fuel refueling device 1 provided for another embodiment, Figure 5 the embodiment shown and Figure 1 the embodiment shown are basically the same, the difference being that in Figure 5 the embodiment shown, the aviation fuel refueling device 1 further includes an input unit 60. The input unit 60 includes buttons and is used to obtain the expected refueling amount. The controller 50 is electrically connected to the input unit 60. The refueling operator uploads the expected refueling amount to the controller 50 by operating the buttons.

[0048] In some other embodiments, the aviation device 13 is provided with a remaining fuel detector for detecting the remaining fuel quantity of the aviation device 13. The aviation device 13 further includes a flight information unit for displaying the flight mileage of the aviation device 13. The aviation fuel refueling device 1 further includes an input unit 60 electrically connected to the controller 50. The input unit 60 is configured to obtain the remaining fuel quantity and flight mileage information of the aviation device 13 and send them to the controller 50. The controller 50 is configured to determine the expected refueling quantity based on the remaining fuel quantity and flight mileage information. Specifically, the mileage that the aviation device 13 needs to travel can be determined according to the flight mileage information, the fuel consumption can be determined according to the flight mileage information, and the value obtained by subtracting the remaining fuel quantity from the fuel consumption is used as the expected refueling quantity.

[0049] Please refer to Figure 5 , Figure 5 For Figure 1 the structural block diagram of the controller 50 shown in Figure 5 As shown, the controller 50 includes an expected refueling quantity acquisition module 51, an overshoot determination module 52, and a judgment module 53. The expected refueling quantity acquisition module 51 is configured to obtain the expected refueling quantity. The overshoot determination module 52 is electrically connected to the flowmeter 40 and is configured to determine the overshoot according to the flow rate. The judgment module 53 is electrically connected to the flowmeter 40, the overshoot determination module 52, and the expected refueling quantity acquisition module 51, and is configured to control the valve control device 20 to disconnect from the pneumatic control valve 30 when the refueling quantity is less than the expected refueling quantity and the difference between the refueling quantity and the expected refueling quantity is the overshoot.

[0050] The overshoot is related to the flow rate. The greater the flow rate, the greater the overshoot during the period from when the controller 50 starts to control the valve control device 20 to disconnect from the pneumatic control valve 30 until the pneumatic control valve 30 is completely closed. The smaller the flow rate, the smaller the overshoot during the period from when the controller 50 starts to control the valve control device 20 to disconnect from the pneumatic control valve 30 until the pneumatic control valve 30 is completely closed.

[0051] In some embodiments, the corresponding relationship between the flow rate and the overshoot is obtained through experiments. The controller 50 stores the corresponding relationship between the calibrated flow rate and the calibrated overshoot. The controller 50 is configured to determine the corresponding calibrated flow rate and calibrated overshoot according to the current flow rate of the aviation fuel and use the determined calibrated overshoot as the overshoot. Specifically, the controller 50 is configured to select the calibrated overshoot corresponding to the calibrated flow rate that is the same as the current flow rate as the overshoot corresponding to the current flow rate.

[0052] The overshoot is not only related to the flow rate but also to the system delay. The greater the flow rate, the longer the system delay, and the greater the overshoot during the period from when the controller 50 starts to control the valve control device 20 to disconnect from the pneumatic control valve 30 until the pneumatic control valve 30 is fully closed. The system delay refers to the time interval between the moment when the controller 50 starts to control the valve control device 20 to disconnect from the pneumatic control valve 30 and the moment when the pneumatic control valve 30 starts to close. The system delay is related to the models of the controller 50, the valve control device 20, and the flowmeter 40. In the same aviation fuel filling device 1, the system delay is generally the same.

[0053] In some other embodiments, the corresponding relationships among the flow rate, the system delay, and the overshoot are obtained through experiments. The controller 50 stores the corresponding relationships between the calibrated overshoot, the calibrated flow rate, and the calibrated system delay. Among them, the controller 50 is used to determine the corresponding calibrated flow rate, calibrated system delay, and calibrated overshoot according to the current flow rate and system delay of the aviation fuel, and use the determined calibrated overshoot as the overshoot. In this way, it is convenient to obtain the relationship between the flow rate and the overshoot under different system delays through experiments. For a specific aviation fuel filling device 1, the system delay of the aviation fuel filling device 1 can be determined first, and the corresponding relationship between the calibrated flow rate and the calibrated overshoot under the current system can be selected as the basis for determining the overshoot.

[0054] In some embodiments, after obtaining the corresponding relationship between the flow rate and the overshoot through experiments, the corresponding relationship between the overshoot and the flow rate is fitted to obtain the calculation relationship of the calibrated overshoot with respect to the calibrated flow rate. The controller 50 stores the calculation relationship between the flow rate and the overshoot, and the controller 50 is used to obtain the overshoot through the calculation relationship according to the current flow rate of the aviation fuel. In this way, the overshoot can be determined for any different flow rates.

[0055] In some other embodiments, after obtaining the corresponding relationship among the overshoot, the flow rate, and the system delay through experiments, the relationship between the overshoot and the flow rate and the system delay is fitted to obtain the calculation relationship between the flow rate and the system delay. The controller 50 stores the calculation relationship between the overshoot and the flow rate and the system delay, and the controller 50 is used to obtain the overshoot through the calculation relationship according to the current flow rate and the current system delay of the aviation fuel. In this way, the overshoot can be determined for any different flow rates and different system delays.

[0056] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the well-known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0057] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. An aviation fuel refueling device, characterized in that: include: The refueling truck is provided with a refueling pipeline, the refueling pipeline is used to connect the oil storage part and the aviation equipment, and a gas control valve is provided in the refueling pipeline; A valve control device, connected to the gas-controlled valve, for controlling the opening and closing of the gas-controlled valve; A flow meter, provided in the refueling pipeline, for detecting the amount of refueling oil entering the aviation equipment and the flow rate of the aviation oil; A controller is electrically connected to the flow meter and the valve control device, and is used to control the disconnection between the valve control device and the air-controlled valve when the oil filling amount is less than the expected oil filling amount and the difference between the oil filling amount and the expected oil filling amount is an overshoot; wherein the overshoot is related to the flow rate.

2. The aviation fuel refueling device according to claim 1, characterized in that: The valve control device includes an air source, and the air-controlled valve includes a valve body and a valve core located in the valve body. The valve body is provided with a channel for the flow of the aviation fuel, and the valve body is provided with an air inlet, which is connected to the valve core; the valve core includes a spring and a blocking member connected to the spring; wherein, the air source and the air inlet are connectable and discontinuously connected, and when the air inlet is disconnected from the air source, the blocking member blocks the channel; when the air inlet is connected to the air source, the blocking member releases the blockage of the channel.

3. The aviation fuel refueling device according to claim 1, characterized in that: The aviation fuel refueling device further includes an input unit, which includes a key for obtaining the expected refueling amount, and the controller is electrically connected to the input unit.

4. The aviation fuel refueling device according to claim 1, characterized in that: The aviation fuel refueling device also includes an input unit electrically connected to the controller, the input unit is used to obtain the remaining fuel and flight mileage information of the aviation equipment, and send it to the controller, and the controller is used to determine the expected refueling amount based on the remaining fuel and the flight mileage information.

5. The aviation fuel refueling device according to claim 1, characterized in that: The valve control device includes a gas source, a gas pipeline and a gas source switch, the gas pipeline is connected between the gas source and the gas control valve, and the gas source switch is used to control the on-off between the gas control valve and the gas source; the controller is used to control the on-off between the gas source and the gas pipeline or the on-off between the gas source switch and the power supply; and when the oil filling amount is less than the expected oil filling amount and the difference between the oil filling amount and the expected oil filling amount is an overshoot amount, the gas source and the gas pipeline are controlled to be disconnected or the gas source switch and the power supply are controlled to be disconnected.

6. The aviation fuel refueling device according to claim 5, characterized in that: The air source switch is a non-self-locking switch; wherein, the air source switch is turned on when the pressing force applied to the air source switch exceeds a set value, and is turned off when the pressing force applied to the air source switch does not exceed the set value.

7. The aviation fuel refueling device according to claim 1, characterized in that: The controller comprises: An expected refueling quantity acquisition module, used to acquire the expected refueling quantity; an overshoot determination module, electrically connected to the flow meter, and configured to determine the overshoot according to the flow velocity; The judgment module is electrically connected to the flow meter, the overshoot amount determination module and the expected refueling amount acquisition module, and is used to control the valve control device to disconnect from the air-controlled valve when the refueling amount is less than the expected refueling amount and the difference between the refueling amount and the expected refueling amount is the overshoot amount.

8. The aviation fuel refueling device according to claim 1, characterized in that: The controller stores a correspondence between a calibrated flow rate and a calibrated overshoot. The controller is used to determine the corresponding calibrated flow rate and calibrated overshoot according to the current flow rate of the aviation fuel, and use the determined calibrated overshoot as the overshoot.

9. The aviation fuel refueling device according to claim 1, characterized in that: The controller stores the correspondence between the calibrated overshoot, the calibrated flow rate and the calibrated system delay, wherein the controller is used to determine the corresponding calibrated flow rate, the calibrated system delay and the calibrated overshoot according to the current flow rate of the aviation fuel and the system delay, and use the determined calibrated overshoot as the overshoot.

10. The aviation fuel refueling device according to claim 1, characterized in that: The controller stores a calculation relationship between the flow rate and the overshoot amount, and the controller is used to obtain the overshoot amount through the calculation relationship according to the current flow rate of the aviation fuel.

11. The aviation fuel refueling device according to claim 1, characterized in that: The controller stores a calculation relationship between the overshoot, the flow rate and the system delay. The controller is used to obtain the overshoot through the calculation relationship according to the current flow rate of the aviation fuel and the current system delay.

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