Light aircraft fuel tank fuel volume measuring device
By using a central controller and sensor system, fuel is injected in stages and its volume is calculated, which solves the problem of error in measuring the fuel volume in aircraft fuel tanks and achieves high-precision and high-efficiency fuel quantity display.
Patent Information
- Application Number
- CN202421210186.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-30
AI Technical Summary
Existing technologies make it difficult to accurately measure fuel volume in aircraft fuel tanks, especially when the aircraft's attitude and fuel density change, resulting in large measurement errors.
The system uses a central controller to inject fuel into the aircraft's fuel tank in stages. The fuel volume in the tank is calculated by the refueling frequency. Combined with high and low fuel level sensors, fuel temperature sensors, and fuel quantity sensors, the system uses an operation controller and a central controller to control the start and stop of the fuel pumps to simulate the aircraft's tilt state.
It improves the accuracy and efficiency of fuel volume measurement, reduces human calculation errors, and ensures reliable display of the remaining fuel volume in the fuel tank during flight.
Smart Images
Figure CN222318157U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to the technical field of fuel volume measuring devices, and more specifically to a fuel volume measuring device for a light aircraft fuel tank. Background technology:
[0002] The measurement of the amount of fuel in an aircraft tank is more complicated than the measurement of the amount of fuel in ordinary circumstances. It refers to a system that continuously measures and indicates the volume of available fuel in an aircraft tank on the ground and in flight. The fuel volume measurement first measures the liquid level height through the oil level sensor, and finally calculates the volume of the fuel based on the shape parameters of the tank and the aircraft's flight attitude parameters. In the above process, accurate measurement of the fuel level is a prerequisite for accurate measurement of the fuel amount. However, due to the complexity of the aircraft system, it is necessary to increase space utilization as much as possible. Therefore, the shape of the fuel tank on the aircraft is not very regular, and the fuel level height must be converted into fuel volume through more complex calculations; secondly, the aircraft's attitude often changes during flight, causing the oil surface to tilt, which brings errors to the measurement results of the fuel volume. Thirdly, the density of the fuel is affected by factors such as origin, temperature, and pressure. Changes in these factors will cause changes in the fuel volume, which will bring errors to the measurement of the fuel volume. Therefore, in order to improve the accuracy and measurement efficiency of the fuel level sensor, it is necessary to develop an efficient measuring device. Utility model content:
[0003] The purpose of the utility model is to address the deficiencies of the prior art and to provide a light aircraft fuel tank fuel volume measuring device, which injects fuel into the aircraft fuel tank in sections through a central controller, and the volume of the fuel in the tank can be calculated according to the refueling frequency.
[0004] A light aircraft fuel tank fuel volume measuring device comprises a measuring carrier and an oil barrel, wherein the measuring carrier comprises two sets of isosceles trapezoidal side support frames, wherein the upper ends of the side support frames are fixedly connected with oblique rectangular support frames, wherein the upper end surfaces of the support frames are fixedly connected with a plurality of brackets, wherein a horizontal mounting plate is arranged below the support frames, wherein the mounting plate is fixedly connected with a plurality of transverse beams, wherein the two ends of the transverse beams are respectively fixedly connected with the side support frames; wherein a transversely arranged aircraft fuel tank is placed inside the bracket, wherein the upper end surfaces of the side walls of the aircraft fuel tank are fixedly connected with the side support frames; wherein the upper end surfaces of the side support frames are fixedly connected with the plurality of transverse beams, ... , the lower part is respectively formed with an oil inlet interface and an oil outlet interface, the oil inlet interface and the oil outlet interface of the aircraft fuel tank are respectively threaded with an oil inlet joint and an oil outlet joint, the oil inlet joint and the oil outlet joint are respectively formed with an oil inlet pipe and an oil outlet pipe, the oil inlet pipe and the oil outlet pipe are respectively fixedly connected to the oil outlet of the oil inlet pump and the oil inlet of the oil outlet pump, the oil inlet of the oil inlet pump and the oil outlet of the oil outlet pump are respectively plugged and fixedly connected with an oil inlet pipe and an oil outlet pipe, and the ends of the oil inlet pipe and the oil outlet pipe are respectively inserted in the oil barrel;
[0005] The oil inlet pump and the oil outlet pump are respectively fixedly connected to the mounting plate, and the mounting plate is fixedly connected with the central controller; the oil filling port on the upper part of the aircraft fuel tank is fixedly connected with a vertical overflow pipe, and the vertical overflow pipe is plugged with an inherent overflow sensor; the overflow pipe is fixedly connected with a return oil pipe, and the end of the return oil pipe is plugged and fixed in the oil barrel; the overflow sensor, the oil inlet pump, the oil outlet pump and the central controller are respectively electrically connected to the operation controller through cables; the operation controller is fixedly connected to the support frame, and the operation controller controls the operation of the central controller, and the central controller controls the start and stop of the oil inlet pump and the start and stop of the oil outlet pump.
[0006] Preferably, the oil inlet interface and the oil outlet interface of the aircraft fuel tank are located on the outer side wall of the aircraft fuel tank at the lower end side of the support frame.
[0007] Preferably, a rubber pad is adhered and fixed to the upper surface of the bracket, and the rubber pad abuts against the outer side wall of the aircraft fuel tank.
[0008] Preferably, a high oil level sensor, a low oil level sensor, an oil temperature sensor and an oil quantity sensor are provided in the aircraft fuel tank, and wiring of the high oil level sensor, the low oil level sensor, the oil temperature sensor and the oil quantity sensor extends out of a plug fixedly connected to a cable connector in the aircraft fuel tank; wiring is provided on the operation controller, and a socket of the cable connector is fixedly connected to the end of the wiring, and the high oil level sensor, the low oil level sensor, the oil temperature sensor and the oil quantity sensor are electrically connected to the operation controller through the wiring.
[0009] Preferably, the operation panel of the operation controller is respectively provided with an ambient temperature display, a fuel temperature display, a refueling frequency display, a one-gallon fuel refueling button, a fuel filling button, a fuel overflow button, an automatic oil drain button, a manual oil drain button, a high oil level display light, a low oil level display light, a filling display light and an oil drain display light; all the high oil level display lights and the low oil level display lights are respectively composed of a red indicator light and a green indicator light, and the filling display light and the oil drain display light are composed of a red indicator light.
[0010] Preferably, the front and rear ends of the side support frame are respectively fixed with wheels, the wheels are against the horizontal bottom surface, and the oil barrel is placed on the horizontal bottom surface on one side of the measuring support frame; the oil barrel contains fuel, and the end of the oil inlet pipe is inserted into the bottom of the oil barrel;
[0011] The connections between the oil return pipe, the oil outlet pipe and the oil barrel are respectively provided with fuel filters.
[0012] The beneficial effects of the utility model are:
[0013] The measuring device can simulate the state of the fuel tank tilt setting when the aircraft is tilted, and inject fuel into the aircraft tank in sections based on the central controller. The volume of the fuel in the tank can be calculated by the refueling frequency. Description of the drawings:
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 It is a structural schematic diagram of the operating controller panel in the utility model.
[0016] In the figure: 1. Measuring carrier; 2. Aircraft fuel tank; 3. Fuel drum; 4. Oil outlet joint; 5. Oil inlet joint; 6. Oil outlet pump; 7. Oil inlet pump; 8. Operation controller; 9. Central controller; 10. Oil outlet pipe; 20. Oil inlet pipe; 30. Overflow pipe; 40. Overflow sensor; 50. Oil return pipe; 60. Rubber pad. Specific implementation method:
[0017] Example: See Figure 1 , 2 As shown, a light aircraft fuel tank fuel volume measuring device comprises a measuring carrier 1 and an oil drum 3. The measuring carrier 1 comprises two sets of isosceles trapezoidal side support frames 11. An oblique rectangular support frame 12 is fixedly connected to the upper end of the side support frame 11. A plurality of brackets 15 are fixedly connected to the upper end surface of the support frame 12. A horizontal mounting plate is provided below the support frame 12. The mounting plate is fixedly connected to a plurality of transverse support beams 13. Both ends of the transverse support beams 13 are respectively fixedly connected to the side support frames 11. A horizontally arranged aircraft fuel tank 2 is placed inside the bracket 15. Since the support frame 12 is arranged obliquely, the aircraft fuel tank 2 placed on the bracket 15 is also inclined. The upper and lower parts of one side wall of the aircraft fuel tank 2 are respectively formed with an oil inlet interface and an oil outlet interface, and the oil inlet interface and the oil outlet interface of the aircraft fuel tank 2 are respectively screwed with an oil inlet joint 5 and an oil outlet joint 4, and the oil inlet joint 5 and the oil outlet joint 4 are respectively formed with an oil inlet pipe 51 and an oil outlet pipe 41, and the oil inlet pipe 51 and the oil outlet pipe 41 are respectively fixedly connected to the oil outlet of the oil inlet pump 7 and the oil inlet of the oil outlet pump 6, and the oil inlet of the oil inlet pump 7 and the oil outlet of the oil outlet pump 6 are respectively inserted and fixedly connected with an oil inlet pipe 20 and an oil outlet pipe 10, and the ends of the oil inlet pipe 20 and the oil outlet pipe 10 are respectively inserted in the oil barrel 3;
[0018] The oil inlet pump 7 and the oil outlet pump 6 are respectively fixedly connected to the mounting plate, to which the central controller 9 is fixedly connected. The oil filling port on the upper part of the aircraft fuel tank 2 is fixedly connected with a vertical overflow pipe 30, into which an inherent overflow sensor 40 is inserted; the overflow sensor 40 adopts a liquid detection sensor, that is, a leakage sensor; a return oil pipe 50 is fixedly connected to the overflow pipe 30, and the end of the return oil pipe 50 is inserted and fixed in the oil barrel 3; the overflow sensor 40, the oil inlet pump 7, the oil outlet pump 6 and the central controller 9 are respectively electrically connected to the operation controller 8 through cables; the operation controller 8 is fixedly connected to the support frame 12, and the operation controller 8 controls the operation of the central controller 9, and the central controller 9 controls the start and stop of the oil inlet pump 7 and the start and stop of the oil outlet pump 6.
[0019] The oil inlet and outlet interfaces of the aircraft fuel tank 2 are located on the outer side wall of the aircraft fuel tank 2 at the lower end of the support frame 12 .
[0020] A rubber pad 60 is adhered and fixed to the upper surface of the bracket 15 , and the rubber pad 60 abuts against the outer wall of the aircraft fuel tank 2 to prevent the bracket 15 from hitting the aircraft fuel tank 2 .
[0021] The aircraft fuel tank 2 is provided with a high fuel level sensor, a low fuel level sensor, an oil temperature sensor and an oil quantity sensor, and the wiring of the high fuel level sensor, the low fuel level sensor, the oil temperature sensor and the oil quantity sensor extends out of a plug fixedly connected to a cable connector in the aircraft fuel tank 2; the operation controller 8 is provided with wiring, and the end of the wiring is fixedly connected to a socket of a cable connector, and the high fuel level sensor, the low fuel level sensor, the oil temperature sensor and the oil quantity sensor are electrically connected to the operation controller 8 through the wiring. Because the high fuel level sensor, the low fuel level sensor, the oil temperature sensor and the oil quantity sensor are conventionally arranged in the aircraft fuel tank 2 and are electronic components existing in the aircraft fuel tank 2, the cable connector is used to facilitate electrical connection during testing.
[0022] The operation panel of the operation controller 8 is respectively provided with an ambient temperature display 81, a fuel temperature display 82, a refueling frequency display 83, a one-gallon fuel refueling button 84, a fuel filling button 85, a fuel overflow button 86, an automatic oil drain button 87, a manual oil drain button 88, a high oil level display light 89, a low oil level display light 810, a filling display light 811 and an oil drain display light 812; all the high oil level display lights 89 and the low oil level display lights 810 are respectively composed of a red indicator light and a green indicator light, the filling display light 811 and the oil drain display light 812 are composed of a red indicator light, the red indicator lights of the high oil level display lights 89 and the low oil level display lights 810 are on, indicating that the operation is normal; when the lights turn green, it indicates that the oil level has reached the high oil level sensor and the low oil level sensor, respectively.
[0023] The front and rear ends of the side support frame 11 are respectively fixed with wheels 14, the wheels 14 are against the horizontal bottom surface, and the oil barrel 3 is placed on the horizontal bottom surface of one side of the measuring support frame 1; the oil barrel 3 contains fuel, and the end of the oil inlet pipe 20 is inserted into the bottom of the oil barrel 3;
[0024] Fuel filters are respectively provided at the connection points between the oil return pipe 50 , the oil outlet pipe 10 and the oil barrel 3 .
[0025] Working principle: The utility model is a tool for measuring the remaining volume of aircraft fuel. It only requires the oil inlet and outlet of the aircraft fuel tank 2 to be connected to the oil barrel 3 through a pipeline, and the high and low oil level, oil temperature, and oil quantity sensors are connected to the operation controller 8. It is simple to operate and has high accuracy. It greatly avoids the influence of manual measurement and calculation on the fuel volume of the fuel tank, and ensures the reliability of the display of the remaining fuel volume of the fuel tank during the test flight and flight.
[0026] The specific measurement method is as follows:
[0027] Place the aircraft fuel tank 2 to be tested on the measuring carrier 1, connect the fuel inlet and fuel outlet to the fuel inlet pipe and fuel outlet pipe, and connect the fuel inlet pipe and fuel outlet pipe to the fuel inlet pump 7 and fuel outlet pump 6 in the middle to ensure the fuel inlet and fuel outlet procedures are carried out smoothly;
[0028] Then turn on the power, observe whether the indicator light on the operation panel of the operation controller 8 is normal, record the initial value, which is the first recording data (the value in the display), and then press the one-gallon fuel filling button 84 to add one gallon of fuel. After the value stabilizes, record the value, which is the second recording data; then continue to press the one-gallon fuel filling button 84 to achieve multiple consecutive injections of one gallon of fuel, observe the operation panel, and the low fuel level indicator 910 changes from red to green, which means that the filling is completed, and then record the data for the third time; at this time, the central controller 9 will The arrival information of the oil quantity makes the oil inlet pump 7 stop working, and at the same time, the oil quantity information in the fuel tank will be transmitted to the display panel, so that we can record the value conveniently; the fourth data is recorded as the high oil level value. Just press the fuel filling button 85 to drive the oil inlet pump 7 to realize automatic filling. During the filling process, the high oil level indicator 89 is in red state. When the filling is completed, the data is recorded; the high oil level transmits the oil quantity information to the operation controller 8, so that the oil inlet pump 7 stops working, and at the same time, the oil quantity information in the fuel tank is transmitted to the display panel. The high oil level indicator light also changes from red to green, indicating that this filling procedure is completed. The fifth time, the overflow value is recorded. By pressing the fuel filling overflow button 86, the information is transmitted to the operation controller 8 to realize automatic filling. When the oil is full and overflows through the overflow pipe 30, the overflow sensor 40 will transmit the command to the operation controller 8 to stop the oil inlet pump from filling. After the data is recorded, let it stand for three hours to observe whether there is oil leakage in the fuel tank.
[0029] After the standing still is completed, the oil draining information is transmitted to the oil delivery pump 6 through the automatic oil draining button 87 via the operating controller 8, and the oil delivery pump 6 starts to work. When the oil level is too low, the operating controller 8 will automatically terminate the automatic oil draining program. The remaining residual oil in the tank can be driven by pressing the manual oil draining button 88 to drive the oil delivery pump 7 to work, thereby realizing manual oil draining.
Claims
1. A light aircraft fuel tank fuel volume measuring device, comprising a measuring carrier (1) and an oil drum (3), wherein the measuring carrier (1) comprises two sets of isosceles trapezoidal side support frames (11), the upper ends of the side support frames (11) are fixedly connected with oblique rectangular support frames (12), the upper end surfaces of the support frames (12) are fixedly connected with a plurality of brackets (15), a horizontal mounting plate is provided below the support frame (12), the mounting plate is fixedly connected with a plurality of transverse beams (13), the two ends of the transverse beams (13) are respectively fixedly connected with the side support frames (11); a transversely arranged aircraft fuel tank (2) is placed inside the bracket (15), characterized in that: An oil inlet interface and an oil outlet interface are respectively formed on the upper and lower parts of one side wall of the aircraft oil tank (2); an oil inlet joint (5) and an oil outlet joint (4) are respectively screwed on the oil inlet joint and the oil outlet joint of the aircraft oil tank (2); an oil inlet pipe (51) and an oil outlet pipe (41) are respectively formed on the oil inlet joint (5) and the oil outlet joint (4); the oil inlet pipe (51) and the oil outlet pipe (41) are respectively fixedly connected to the oil outlet of the oil inlet pump (7) and the oil inlet of the oil outlet pump (6); the oil inlet of the oil inlet pump (7) and the oil outlet of the oil outlet pump (6) are respectively plugged and fixedly connected with an oil inlet pipe (20) and an oil outlet pipe (10); the ends of the oil inlet pipe (20) and the oil outlet pipe (10) are respectively inserted into the oil barrel (3); The oil inlet pump (7) and the oil outlet pump (6) are respectively fixedly connected to a mounting plate, to which a central controller (9) is fixedly connected; a vertical overflow pipe (30) is fixedly connected to the oil filling port on the upper part of the aircraft fuel tank (2), and a built-in overflow sensor (40) is inserted into the vertical overflow pipe (30); a return oil pipe (50) is fixedly connected to the overflow pipe (30), and the end of the return oil pipe (50) is inserted and fixed in the oil barrel (3); the overflow sensor (40), the oil inlet pump (7), the oil outlet pump (6) and the central controller (9) are respectively electrically connected to the operation controller (8) through cables; the operation controller (8) is fixedly connected to the support frame (12), the operation controller (8) controls the operation of the central controller (9), and the central controller (9) controls the start and stop of the oil inlet pump (7) and the start and stop of the oil outlet pump (6).
2. A light aircraft fuel tank fuel volume measuring device according to claim 1, characterized in that: The oil inlet interface and the oil outlet interface of the aircraft oil tank (2) are located on the outer side wall of the aircraft oil tank (2) at the lower end side of the support frame (12).
3. A light aircraft fuel tank fuel volume measuring device according to claim 2, characterized in that: A rubber pad is glued and fixed to the upper surface of the bracket (15), and the rubber pad abuts against the outer side wall of the aircraft fuel tank (2).
4. A light aircraft fuel tank fuel volume measuring device according to claim 1, characterized in that: The aircraft fuel tank (2) is provided with a high fuel level sensor, a low fuel level sensor, an oil temperature sensor and an oil quantity sensor, and the wiring of the high fuel level sensor, the low fuel level sensor, the oil temperature sensor and the oil quantity sensor extends out of a plug fixedly connected to a cable connector of the aircraft fuel tank (2); the operation controller (8) is provided with wiring, the end of which is fixedly connected to a socket of the cable connector, and the high fuel level sensor, the low fuel level sensor, the oil temperature sensor and the oil quantity sensor are electrically connected to the operation controller (8) through the wiring.
5. A light aircraft fuel tank fuel volume measuring device according to claim 4, characterized in that: The operation panel of the operation controller (8) is respectively provided with an ambient temperature display (81), a fuel temperature display (82), a refueling frequency display (83), a one-gallon fuel refueling button (84), a fuel filling button (85), a fuel overflow button (86), an automatic oil drain button (87), a manual oil drain button (88), a high oil level display light (89), a low oil level display light (810), a refueling display light (811) and an oil drain display light (812); all the high oil level display lights (89) and the low oil level display lights (810) are respectively composed of a red indicator light and a green indicator light, and the refueling display light (811) and the oil drain display light (812) are composed of a red indicator light.
6. A light aircraft fuel tank fuel volume measuring device according to claim 1, characterized in that: The front and rear ends of the side support frame (11) are respectively fixedly connected with wheels (14), the wheels (14) are against the horizontal bottom surface, and the oil barrel (3) is placed on the horizontal bottom surface of one side of the measuring support frame (1); the oil barrel (3) contains fuel, and the end of the oil inlet pipe (20) is inserted into the bottom of the oil barrel (3); Fuel filters are respectively provided at the connection points between the oil return pipe (50), the oil outlet pipe (10) and the oil barrel (3).