Multifunctional integrated aircraft fuel filling guarantee device

Abstract

The utility model discloses a multifunctional integrated aircraft oil filling guarantee device. An oil filling module is integrally installed on an automobile chassis through an automobile box. A generator set installation area, an oil tank I installation area, a refueling assembly I installation area, a refueling assembly II installation area, an oil tank II installation area, a refueling hose and an electric reel installation area are sequentially arranged in the automobile box body from front to back along the automobile head. An electrical cabinet mounting area and a refueling system control interface mounting area are arranged on the left rear side of the automobile chassis; all the components installed in the automobile box body form the oil filling module, so that the oil filling module is integrated with a plurality of sets of independent filling systems; a hose refueling connector of the refueling system is in butt joint with a refueling connector of an airplane, so that refueling of a hydraulic system and a lubricating oil system of the airplane is achieved. According to the technical scheme provided by the utility model, the problem that aircraft refueling becomes a time-consuming and labor-consuming production problem in test flight outfield work due to an existing ground tool refueling mode is solved.

Description

Technical Field

[0001] This utility model relates to, but is not limited to, the field of aircraft maintenance technology, and in particular to a multi-functional integrated aircraft fuel refueling support device. Background Technology

[0002] Refueling / replenishing aircraft is a high-frequency maintenance operation at the flight test and production site, which involves adding fuel to the fuel tanks of various aircraft systems using process equipment.

[0003] Currently, apart from dedicated refueling trucks for aircraft kerosene, other fluids are mainly refueled using ground-based equipment. This ground-based equipment is trolley-type and mainly consists of a vehicle body, fuel tank, hand pump, refueling hose, and refueling connectors. During refueling, the hand pump is manually operated, resulting in low efficiency. Furthermore, a single full tank cannot guarantee refueling under maximum operating conditions (such as initial engine lubrication or engine oil seal refueling). Multiple people (3-5) are required to push the equipment a long distance between the apron and the fuel depot to complete the refueling process, making aircraft refueling a time-consuming and labor-intensive production challenge in flight test field operations. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned technical problems. This utility model provides a multi-functional integrated aircraft fuel refueling support device to solve the problem that in the existing ground tool refueling method, a single full tank of fuel cannot guarantee the refueling needs under the maximum fuel consumption conditions on site, thus making aircraft refueling a time-consuming and labor-intensive production problem in test flight field work.

[0005] The technical solution of this utility model: This utility model embodiment provides a multi-functional integrated aircraft fuel refueling support device, including: an automotive part and a fuel refueling module;

[0006] The vehicle chassis serves as the installation platform for the fuel filling module. The fuel filling module is integrated and installed on the vehicle chassis via the vehicle body. The layout of the vehicle body from front to rear along the front of the vehicle is as follows: generator set installation area 19, fuel tank I installation area 20, refueling component I installation area 21, refueling component II installation area 22, fuel tank II installation area 23, and refueling hose and electric reel installation area 24. Furthermore, the electrical cabinet installation area 25 and the refueling system control interface installation area 26 are located on the left rear side of the vehicle chassis.

[0007] The various components installed inside the vehicle body form a fuel filling module, which integrates multiple independent filling systems. The vehicle body also integrates a generator set, an electrical control system, and multiple independent filling systems. Each filling system includes: a fuel tank, a fuel pump assembly, a fuel supply pipe, a fuel hose and reel, a fuel connector, and an operation panel. The fuel system connects to the aircraft's fuel filling interface via the fuel hose connector, and the fuel pump drives a certain fuel filling pressure to refuel the aircraft's hydraulic and lubrication systems.

[0008] Optionally, in the multi-functional integrated aircraft fuel refueling and support device described above,

[0009] The fuel filling module includes the following components installed in various areas of the vehicle body: generator exhaust pipe 1, generator 6, vehicle-mounted generator 13, fuel filling pipeline assembly 8, fuel filling system tank II 9, fuel filling pipeline storage box 10, fuel filling hose and reel 11, fuel filling connector storage box 12, fuel filling system tank I 14, hand pump 15, fuel filling system control interface 16, electrical cabinet 17, ground power connection cable storage box 18, as well as fuel pump assembly, filter assembly and filter dewatering assembly.

[0010] Optionally, in the multi-functional integrated aircraft fuel refueling and support device described above, the following components are installed in each area of ​​the housing:

[0011] The generator set installation area 19 is equipped with generator 6 and vehicle-mounted generator 13;

[0012] Fuel tank I installation area 20 is equipped with 3 refueling system fuel tanks I 14;

[0013] The refueling component I installation area 21 is equipped with an oil pump assembly, a refueling pipeline assembly 8, and a water filtration and dewatering assembly;

[0014] The refueling component II installation area 22 is equipped with an oil pump assembly, a refueling pipeline assembly 8, and a filter assembly;

[0015] Two refueling system tanks, II and II, are installed in the fuel tank II installation area 23.

[0016] The refueling hose and electric reel installation area 24 is equipped with refueling hoses and reels 11 for 5 sets of refueling systems and refueling connector storage boxes 12.

[0017] The refueling system control interface 16 is located in the refueling system control interface installation area 26 on the left rear side;

[0018] Electrical cabinet 17 is installed in electrical cabinet installation area 25;

[0019] The generator exhaust pipe 1 is installed on the top of the vehicle body to guide and discharge the smoke and dust generated during the generator operation; the refueling pipe storage box 10 and the ground power connection cable storage box 18 are installed on the rear bottom of the vehicle chassis.

[0020] Optionally, in the multi-functional integrated aircraft fuel refueling and support device described above,

[0021] Each oil tank in the oil filling module includes a tank body, a liquid level sensor, a liquid level indicator, and a pipeline mounting base. Each tank body has high and low liquid level protection functions, which are used to automatically alarm when the liquid level in the tank is higher or lower than the corresponding alarm value, by illuminating the corresponding alarm light on the operation interface, thereby causing the corresponding filling system to delay or stop working.

[0022] Optionally, in the multi-functional integrated aircraft fuel refueling and support device described above,

[0023] Each independent refueling system includes a circulation pump, a vacuum pump, and a refueling pump, which are used to replenish fuel tanks and refuel aircraft. The pumps are used as power sources, and the refueling pressure is adjustable within a certain range. In addition, the fuel pump assembly is also equipped with a hand-cranked pump for emergency refueling of aircraft.

[0024] Optionally, in the multi-functional integrated aircraft fuel refueling and support device described above,

[0025] Each independent refueling system is equipped with shut-off valves and bypass valves at key valves on the refueling pipeline; these are used to cut off the oil circuit and reduce oil leakage when the key valves are disassembled; and to improve the maintainability of the equipment by opening the bypass valves for emergency refueling.

[0026] Each independent refueling system is equipped with an online metering interface on its refueling pipeline. Metering equipment is connected to the online metering interface, and the metering switch is turned on to perform online metering of the equipment's pressure and flow sensors, thus avoiding the need to disassemble and send the sensors for inspection.

[0027] Optionally, in the multi-functional integrated aircraft fuel refueling support device described above, the multiple refueling systems integrated by the fuel refueling module also include: fuel circulation and purification equipment, vacuum dehydration equipment, and fuel refueling components, so as to achieve fuel cleaning and purification, dehydration and purification, and refueling.

[0028] The oil circulation and purification equipment includes a circulation pump and a filter; the vacuum dehydration equipment includes a heater, an air filter, a buffer tank, an oil-water separator, and a vacuum pump; the oil filling components include a proportional pressure reducing valve, a pressure sensor, a filter, a flow meter, a solenoid valve, a filling hose, a ball valve, and a quick-release connector.

[0029] Optionally, in the multi-functional integrated aircraft fuel refueling support device described above, the refueling system is divided into two categories according to the different requirements of the aircraft fuel: a vacuum dehydration and purification system and a cleaning and purification system.

[0030] The beneficial effects of this utility model are as follows: To address the bottleneck problems of poor mobility, low fuel capacity, and low refueling efficiency of ground-based equipment, and the issue of requiring multiple ground-based equipment vehicles when refueling aircraft with different refueling interfaces due to the low degree of standardization of ground-based equipment, this utility model provides a multi-functional integrated aircraft fuel refueling support device. It uses a vehicle chassis as the installation platform for the fuel refueling module, and the entire fuel refueling module is moved via the vehicle chassis. The fuel refueling module integrates multiple refueling systems and has fuel cleaning and refueling functions. The fuel refueling module consists of an on-board generator, a refueling system, an electrical control system, etc., including a fuel tank, fuel pump and fuel supply pipe, hydraulic hose reel, refueling connector, etc., installed in the housing. The fuel refueling support device provided by this utility model is used for aircraft ground testing and maintenance flight preparation. The support device is driven to the required refueling location, and maintenance personnel select different power supply methods according to the on-site conditions. The refueling connector of the fuel refueling support device is connected to the aircraft's refueling interface, the refueling pressure is set, and the refueling system is started to perform refueling. The oil refueling support device of this utility model has advantages such as wide power selection, quick conversion / connection of refueling connector, good mobility, and large oil tank capacity. It can better meet the needs of rapid oil refueling of aircraft under test field conditions, and can further realize the integration, standardization and convenience of refueling of aircraft hydraulic system and lubricating oil system.

[0031] This utility model embodiment specifically provides a safe, efficient, and convenient aircraft fuel filling device. Using this fuel filling support device effectively solves the refueling problems of existing ground-based equipment, replacing the manual "pushing," "hand-cranked refueling," and "hand-cranked filling" methods of the prior art. It addresses the problems of small fuel tank capacity, poor mobility, and weak refueling support capabilities of ground-based equipment. It also overcomes the shortcomings of time-consuming and labor-intensive fuel filling using previous ground-based equipment, greatly improving the efficiency of aircraft ground testing and flight preparation work. The efficiency of a single full refueling operation is increased by 80%: (5h-1h) / 5h = 80%, reducing the workload and labor intensity of on-site maintenance personnel. The device supports... The diverse power supply options allow for selection based on actual operating conditions, significantly expanding the refueling work area. Furthermore, for extended periods of oil circulation and purification, ground-based power supply offers greater economic efficiency compared to previous vehicle-mounted diesel generators, reducing carbon dioxide and noise emissions. The connection between the refueling hose and connector utilizes a standardized shut-off valve (self-sealing interface) and conversion interface, enabling refueling support for multiple users of the same fuel. Adding new users only requires configuring a standardized refueling connector, effectively resolving the redundancy issue of previous refueling equipment, greatly saving production costs, and promoting the standardization of refueling support equipment for flight test sites. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0033] Figure 1 A three-dimensional structural diagram of a multifunctional integrated aircraft fuel refueling support device provided for an embodiment of this utility model;

[0034] Figure 2 for Figure 1 A three-dimensional structural diagram of the multi-functional integrated aircraft fuel refueling support device provided in the embodiment shown from another perspective;

[0035] Figure 3 for Figure 1 The illustrated embodiment provides a top view of a multi-functional integrated aircraft fuel refueling support device;

[0036] Figure 4 for Figure 1 The schematic diagram of the vacuum dehydration hydraulic system in the multifunctional integrated aircraft fuel refueling support device provided in the embodiment shown is shown.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Generator exhaust pipe, 2. Rearview mirror, 3. Cab, 4. Tires, 5. Car battery, 6. Generator, 7. Car fuel tank, 8. Refueling line assembly, 9. Refueling system fuel tank II, 10. Refueling line storage box, 11. Refueling hose and reel, 12. Refueling connector storage box, 13. On-board generator, 14. Refueling system fuel tank I, 15. Hand pump, 16. Refueling system control interface, 17. Electrical cabinet, 18. Power cord storage box, 19. Generator set installation area, 20. Fuel tank I (filtration and dehydration system) installation area, 21. Refueling assembly I (filtration and dehydration system) installation area, 22. Refueling assembly II (clean filtration system) installation area, 23. Fuel tank II (clean filtration system) installation area, 24. Refueling hose and electric reel installation area, 25. Electrical cabinet installation area, 26. Refueling system control interface installation area, 27. Hydraulic oil tank, 28. Drain ball valve, 29. Suction ball valve, 3 0. Circulating pump set, 31. Check valve, 32. Heater, 33. Radiator, 34. Oil filter I, 35. Oil filter II, 36. Oil filter III, 37. Temperature sensor, 38. Baffle device, 39. Throttling valve, 40. Online contamination detector, 41. Level gauge, 42. Quick connector, 43. Level sensor, 44. Pressure sensor, 45. Air filter, 46. Throttling valve, 47. Buffer tank, 48. Oil drain switch, 49. Oil-water separator, 50. Vacuum pump, 51. Hand pump, 52. Oil pump set, 53. Check valve, 54. Check valve, 55. Oil filter, 56. Safety valve, 57. Proportional pressure reducing valve, 58. Metering interface, 59. Shut-off valve, 60. Pressure test connector, 61. Pressure test hose, 62. Pressure sensor, 63. Ball valve, 64. Ball valve, 65. Flow meter, 66. Ball valve, 67. Solenoid valve, 68. Sampling valve, 69. Oil hose, 70. Shut-off valve, 71. Oil connector. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0040] As explained in the background section above, the structure and usage of ground refueling equipment, as well as its existing problems, are as follows: a single full tank of fuel in the ground equipment cannot guarantee the refueling needs under the maximum fuel consumption conditions on site (such as the first lubrication of the engine, engine oil seals, etc.). Multiple people (3 to 5 people) need to work together to push the equipment a long distance back and forth between the apron and the fuel depot to complete the refueling work, making aircraft refueling a time-consuming and labor-intensive production problem in the field of flight test.

[0041] Given the limitations of ground-based refueling equipment, such as poor mobility, low fuel capacity, and low refueling efficiency, and considering the issue of multiple ground-based equipment being required to refuel aircraft with different refueling interfaces due to the low degree of standardization of ground-based equipment, resulting in a large number of ground-based equipment on-site, this utility model provides a multi-functional integrated aircraft fuel refueling support device. This device offers a safe, efficient, and convenient aircraft fuel refueling solution to the problems of existing ground-based equipment refueling, replacing the manual "pushing," "hand-cranked refueling," and "hand-cranked refueling" methods in the prior art. It also addresses the issues of small fuel tank capacity, poor mobility, and weak refueling support capabilities of ground-based equipment, thereby improving the standardization and support technology of ground-based equipment.

[0042] The present invention provides the following specific embodiments, which can be combined with each other. For the same or similar concepts or processes, they will not be described again in some embodiments.

[0043] Figure 1 A three-dimensional structural diagram of a multifunctional integrated aircraft fuel refueling support device provided for an embodiment of this utility model; Figure 2 for Figure 1 A three-dimensional structural diagram of the multi-functional integrated aircraft fuel refueling support device provided in the embodiment shown from another perspective; Figure 3 for Figure 1 A top view of the multi-functional integrated aircraft fuel refueling and support device provided in the illustrated embodiment. See also... Figures 1 to 3 As shown in the figure, the main structure of the multifunctional integrated aircraft fuel refueling support device provided in this embodiment of the utility model includes: a vehicle part and a fuel refueling module.

[0044] like Figures 1 to 3 As shown, the vehicle component in this embodiment includes: a rearview mirror 2, a driver's cab 3, a vehicle chassis, tires 4, a vehicle battery 5, and a vehicle fuel tank 7, with the fuel tank 7 located at the bottom of the vehicle chassis. The vehicle chassis uses a Class II chassis as the mounting platform for the fuel filling module, and the fuel filling module is moved as a whole by the vehicle component.

[0045] like Figures 1 to 3 As shown, in this embodiment of the utility model, the fuel filling module is integrated and installed on the vehicle chassis via a vehicle body. The layout within the body, from front to rear of the vehicle, is as follows: generator set installation area 19, fuel tank I (filtration and water removal system) installation area 20, refueling component I (filtration and water removal system) installation area 21, refueling component II (clean filtration system) installation area 22, fuel tank II (clean filtration system) installation area 23, and refueling hose and electric reel installation area 24. Additionally, an electrical cabinet installation area 25 and a refueling system control interface installation area 26 are located on the left rear side of the vehicle chassis. Fuel tank I and refueling component I are both components of the filtration and water removal system, while fuel tank II and refueling component II are both components of the clean filtration system.

[0046] like Figures 1 to 3 As shown, the following components are installed in various areas of the car body according to this embodiment of the utility model:

[0047] (1) The generator set installation area 19 is equipped with a generator 6 and a vehicle-mounted generator 13, the vehicle-mounted generator 13 being, for example, a diesel generator 13; the generator exhaust pipe 1 is installed on the top of the vehicle body to guide and discharge the smoke and dust generated during the generator operation.

[0048] (2) The oil tank I installation area 20 is equipped with 3 filling system oil tanks I 14, such as filter and dewatering oil tanks;

[0049] (3) The refueling component I installation area 21 is equipped with an oil pump assembly, an oil supply pipe, and a filter and water removal assembly;

[0050] (4) The refueling component II installation area 22 is equipped with an oil pump assembly, oil supply pipe and filter assembly;

[0051] (5) Install two filling system oil tanks II9 in the oil tank II installation area 23, for example, filter oil tanks;

[0052] (6) The refueling hose and electric reel installation area 24 is equipped with 5 sets of refueling hoses and reels 11 and refueling connector storage boxes 12 for refueling systems.

[0053] (7) The refueling system control interface installation area 26 on the left rear side is equipped with a refueling system control interface 16 (i.e., control computer);

[0054] (8) Electrical cabinet installation area 25 is equipped with electrical equipment such as electrical cabinet 17.

[0055] In this embodiment of the invention, the various components installed inside the vehicle body form a fuel filling module. This fuel filling module includes: a generator exhaust pipe 1, a generator 6, a vehicle-mounted generator 13, a fuel filling pipeline assembly 8, a fuel filling system tank II 9, a fuel filling pipeline storage box 10, a fuel filling hose and reel 11, a fuel filling connector storage box 12, a fuel filling system tank I 14, a hand-cranked pump 15, a fuel filling system control interface 16, an electrical cabinet 17, and a ground power connection cable storage box 18. Additionally, it includes a fuel pump assembly, a filter assembly, and a water filtration assembly. These components form the fuel filling module, integrating multiple independent fuel filling systems. This embodiment of the invention uses five systems as an example. Furthermore, the vehicle body integrates a generator set, a fuel filling system (five independent systems), and an electrical control system.

[0056] The fuel filling module of this utility model integrates multiple filling systems, each of which includes: a fuel tank, a fuel pump assembly, a fuel supply pipe, a fuel filling hose and reel 11, a fuel filling connector, and an operating space panel. The fuel filling system connects to the aircraft's fuel filling interface via the hose connector, and the fuel pump drives a certain fuel filling pressure to refill the aircraft's hydraulic and lubricating oil systems.

[0057] In practice, the multiple filling systems integrated into the oil filling module also include: oil circulation and purification equipment (including circulation pump and filter), vacuum dehydration equipment (heater, air filter, buffer tank, oil-water separator, vacuum pump) and oil filling components (including proportional pressure reducing valve, pressure sensor, filter, flow meter, solenoid valve, filling hose, ball valve, quick-release connector) to achieve oil cleaning and purification or dehydration purification and filling.

[0058] It should be noted that the multiple refueling systems integrated in the vehicle in this embodiment of the present invention are designed to work independently. Each system has an independent oil storage, oil replenishment, circulation purification / water removal purification, and refueling module, and they do not interfere with each other during use.

[0059] The oil pump assembly in this embodiment includes a circulation pump, a vacuum pump, and a refueling pump. Both refueling the fuel tank and refueling the aircraft are powered by the pump, and the refueling pressure is adjustable within a certain range. Compared to existing ground-based hand-cranked pumps for refueling aircraft and suction methods for refueling ground-based fuel tanks, this method is simpler to operate and greatly improves refueling / refueling efficiency. In addition, the oil pump assembly is also equipped with a hand-cranked pump for emergency aircraft refueling.

[0060] The power supply design of the multifunctional integrated aircraft fuel refueling support device provided in this embodiment includes a vehicle-mounted generator set 13, an external ground power supply interface, and cables. The vehicle-mounted generator set 13 ensures that all systems operate at maximum load and has a system interlock function, meaning that when one power supply method is selected, the other will not be activated. Using the vehicle-mounted generator set can meet the maximum load requirements of all systems; different power supply methods can be selected according to the circulation purification and refueling conditions, overcoming the power supply limitations of the support device.

[0061] The operation control interface 16 of the refueling system in this embodiment of the utility model adopts a modular centralized layout, including control operations such as power supply, fuel tank refueling / aircraft refueling, and circulation purification. The refueling system control has two independent control modes: operation buttons and a computer touchscreen, and the operation procedure is simple. After the control computer is powered on, it automatically starts and runs the display program, and the display interface consists of a main interface and control interfaces for each system.

[0062] The end of the refueling hose in this embodiment of the utility model adopts a quick-release self-sealing connector, and adopts a universal interface design and application with the refueling connector, so that the same fuel filling system can be adapted to the working conditions of multiple refueling connectors, and can realize the refueling guarantee for multiple users, ensuring the universality of refueling equipment.

[0063] In this embodiment of the invention, the refueling hose and reel 11 are integrated at the rear of the vehicle chassis and equipped with an electric refueling hose collection device, including a hose reel, a drive motor assembly, a locking assembly, and a control box (reload and unload control switch). During operation, operating the control switch "reload / stop / unload" can automatically recycle / unload the refueling hose, which is convenient to operate and easy to use on site. In addition, the rear-end layout of the vehicle body makes it easy for the device to approach aircraft for refueling.

[0064] In this embodiment of the invention, each independent refueling system is equipped with a shut-off valve and a bypass valve at the key valve on the refueling pipeline. These valves are used to cut off the oil circuit and reduce oil leakage when the key valve is disassembled. Furthermore, emergency refueling can be performed by opening the bypass valve, improving equipment maintainability. Additionally, each independent refueling system has an online metering interface on its refueling pipeline. Metering equipment is connected to this interface, and the metering switch is turned on to perform online metering of the equipment's pressure and flow sensors, eliminating the previous step of disassembling and sending the sensors for inspection, thus reducing workload.

[0065] It should be noted that, as Figures 1 to 3 As can be seen, in this embodiment of the utility model, the fuel filling module is installed in a vehicle body. The vehicle body employs a modular layout design, with functionally arranged modular components within the body, arranged sequentially from front to back: motor unit, fuel tank and refueling accessory area, control panel, electrical equipment cabinet, refueling flexible circuit and collection device. This modular design ensures sufficient maintenance access for the aircraft even when integrating multiple systems, guaranteeing accessibility for equipment inspection and maintenance, and significantly improving equipment maintainability.

[0066] The following describes the method of using the multifunctional integrated aircraft fuel refueling and support device provided in the embodiments of this utility model. Specifically, the method involves using the integrated aircraft fuel refueling and support device provided in any of the above embodiments to refuel an aircraft. The implementation process includes:

[0067] Step 1: Drive the multi-functional integrated aircraft fuel refueling support device to the refueling location and park it securely.

[0068] Step 2, Power Supply: Depending on the actual working conditions, select either the vehicle-mounted generator 13 or the ground power supply, and start the equipment as required to put it into a powered state.

[0069] Step 3, Connect the refueling connector: According to the aircraft refueling interface, select the matching refueling connector 71 and connect it to the shut-off valve 70 of the corresponding refueling system refueling hose 69. Loosen the refueling hose reel lock and set the corresponding hose reeling and unloading electric control switch to "release" to release the appropriate length of refueling hose (after it is in place, set the hose reeling and unloading electric control switch to "stop"). Reliably connect the refueling connector 71 to the aircraft refueling interface. Before connecting the refueling hose to the aircraft interface, check that the connector and interface are clean.

[0070] Step 4, set the refueling pressure: After the control computer is powered on, it will automatically start and run the display program. Click the corresponding refueling system button on the touch screen to enter the system control interface. In the "Aircraft Refueling" area of ​​the system control interface, set the required refueling pressure value according to the aircraft refueling pressure requirements.

[0071] Step 5, Refueling Operation: In the aircraft refueling area of ​​the selected refueling system control interface, click [Start Work] or switch the corresponding refueling system [Mode Selection] switch on the control panel to [Fuel Refueling], and press the [Start Work] button for the corresponding system; the refueling pump will start and begin refueling the aircraft;

[0072] Step 6, Stop refueling: After refueling is complete, click the "Stop Work" button in the aircraft refueling area of ​​the selected refueling system control interface or press the "Stop Work" button on the corresponding refueling system operation panel, and turn the "Mode Selection" switch to the middle position.

[0073] Step 7, retract the refueling hose: Disconnect the refueling connector from the aircraft refueling interface, set the corresponding refueling hose retraction electric control switch to "retract", and after the refueling hose is retracted into the reel, set the hose retraction electric control switch to "stop" and lock the reel; remove and properly place the refueling connector 71 at the end of the refueling line.

[0074] Step 8, Power off the device: Click the power off button in the upper right corner of the touch screen to control the computer to close the program and automatically shut down. Wait for the computer to completely shut down.

[0075] Step 9, Turn off the power: According to the selected power supply method, turn off the power:

[0076] a) If using ground power, first press the [Power Off] button, then switch the [Power Selection] switch to the neutral position to disconnect the cable from the ground power source;

[0077] b) If using a vehicle-mounted generator set for power supply, switch the [Power Selection] switch to the neutral position, press the red stop button on the generator set controller, and wait 180 seconds for the generator to automatically warm up and stop. Finally, switch the generator set control power switch to the off position.

[0078] It should be noted that the refueling system provided in this embodiment can be divided into two categories according to the different requirements of the aircraft refueling fluid: vacuum dehydration and purification system, and cleaning and purification system. The structural forms and working methods of the above two refueling systems are described below:

[0079] (1) Vacuum water removal and purification system:

[0080] like Figure 4 As shown, Figure 1 The schematic diagram shown illustrates the principle of the vacuum dehydration hydraulic system in the multifunctional integrated aircraft fuel refueling support device provided in the embodiment. This vacuum dehydration and purification system employs a composite technology of vacuum dehydration and circulating filtration to remove all free water, 70% dissolved water, and harmful substances such as solid particulate contaminants from the oil. Simultaneously, it is equipped with a three-stage large-capacity filter, possessing sufficient dirt-holding capacity and filtration capacity classification, improving cleaning efficiency and ensuring that the cleanliness of the hydraulic system is no lower than GJB420B-6 level, with a water content not exceeding 100ppm. The system includes: a hydraulic oil tank 27, a suction switch 29, a circulating pump group 30, a check valve 31, a heater 32, a radiator 33, oil filter I 34, oil filter II 35, oil filter III 36, a temperature sensor 37, a turbulence device 38, a throttle valve 39, an online contamination detector 40, a level gauge 41, a quick connector 42, a level sensor 43, an absolute pressure sensor 44, an air filter 45, a throttle valve 46, a buffer tank 47, a drain switch 48, and an oil... Water separator 49, vacuum pump 50, hand pump 51, refueling pump assembly 52, check valve 53, check valve 54, refueling filter 55, safety valve 56, proportional pressure reducing valve 57, metering interface 58, shut-off valve 59, pressure testing connector 60, pressure testing hose 61, pressure sensor 62, ball valve 63, ball valve 64, flow meter 65, ball valve 66, solenoid valve 67, sampling valve 68, refueling hose 69, shut-off valve 70, refueling connector 71; The above components are as follows: Figure 4 Connecting relationships.

[0081] The working principle of this vacuum dehydration and purification system is as follows: Vacuum pump 50 is started to bring the vacuum level in the purification tank to a certain value (30kPa~60kPa); simultaneously, circulation pump group 30 is started, allowing the oil to pass through heater 32 and radiator 33, then sequentially enter oil filter I 34, oil filter II 35, and oil filter III 36 before entering oil tank 27. Oil tank 27 is equipped with a two-stage dispersion device for pressure dispersion and filler dispersion, ensuring that the oil tank 27 has a more uniform and dense contact with the vacuum environment, maximizing surface area. Water vapor in the oil rapidly expands 4-5 times and escapes from the oil, being drawn away by vacuum pump 50, achieving the dehydration effect. The oil undergoes repeated vacuum dehydration and solid particle removal via circulation pump group 30, ensuring that the water content of the oil is ≤100ppm and the solid contamination level meets the requirements. The system is equipped with a sampling valve 68, which can sample and test the hydraulic oil after it is filtered and circulated in the support vehicle (water content, contamination level); an online contamination level detector 40 is designed on the circulation loop, which can detect the solid contamination level of the oil online.

[0082] The working principle of this vacuum dehydration and purification system for aircraft refueling is as follows: During refueling, the refueling pump assembly 52 operates, pumping purified fuel (after dehydration) through the suction ball valve 29, passing it through the refueling filter 55, flow meter 65, solenoid valve 67, refueling hose 69, shut-off valve 70, and quick-release connector 71 into the aircraft's fuel tank. The refueling pressure can be set and adjusted via the proportional pressure reducing valve 57, and the pressure sensor 62 collects the refueling pressure in real time, displaying it on the human-machine interface. The refueling flow rate is infinitely adjustable by controlling the motor speed, and the flow meter 65 collects the refueling flow rate in real time, displaying it on the human-machine interface. Pressure and flow rate presets can both be operated on the human-machine interface. Additionally, in emergency situations, fuel can be added to the aircraft via the hand pump 51.

[0083] (2) Cleaning and purification system

[0084] Compared to the vacuum dewatering purification system, this cleaning and purification system lacks the vacuum dewatering component (heater 32, absolute pressure sensor 44, air filter 45, throttle valve 46, buffer tank 47, oil drain switch 48, oil-water separator 49, vacuum pump 50; the rest are the same).

[0085] This cleaning and purification system employs circulating filtration technology to remove harmful substances such as solid particulate contaminants from the hydraulic fluid, ensuring a cleanliness level of the hydraulic system no lower than GJB420B-7. When solid particles need to be removed from the oil tank, the circulating pump unit 30 operates, transporting the oil from the tank to the radiator 33 via the pump unit 30. The oil then passes through oil filters I 34, II 35, and III 36 before returning to the oil tank, thus circulating the fluid. The circulating and filtered hydraulic oil can be sampled and analyzed using the sampling valve 68 configured in the system.

[0086] The working principle of the cleaning and purification system for refueling aircraft is the same as that of the vacuum dehydration system.

[0087] This utility model provides a multi-functional integrated aircraft fuel refueling support device. A vehicle chassis serves as the installation platform for the fuel refueling module, which is moved as a whole by the chassis. The fuel refueling module integrates multiple refueling systems and has fuel cleaning and refueling functions. The fuel refueling module consists of an onboard generator, a refueling system, and an electrical control system, including a fuel tank, fuel pump, fuel supply pipe, hydraulic hose reel, and refueling connector installed in the housing. This fuel refueling support device is used for aircraft ground testing and maintenance flight preparation. The device is driven to the required refueling location, and maintenance personnel select different power supply methods according to the site conditions. The refueling connector of the fuel refueling support device is connected to the aircraft's refueling interface, the refueling pressure is set, and the refueling system is started to perform refueling. The oil refueling support device of this utility model has advantages such as wide power selection, quick conversion / connection of refueling connector, good mobility, and large oil tank capacity. It can better meet the needs of rapid oil refueling of aircraft under test field conditions, and can further realize the integration, standardization and convenience of refueling of aircraft hydraulic system and lubricating oil system.

[0088] This utility model embodiment specifically provides a safe, efficient, and convenient aircraft fuel filling device. Using this fuel filling support device effectively solves the refueling problems of existing ground-based equipment, replacing the manual "pushing," "hand-cranked refueling," and "hand-cranked filling" methods of the prior art. It addresses the problems of small fuel tank capacity, poor mobility, and weak refueling support capabilities of ground-based equipment. It also overcomes the shortcomings of time-consuming and labor-intensive fuel filling using previous ground-based equipment, greatly improving the efficiency of aircraft ground testing and flight preparation work. The efficiency of a single full refueling operation is increased by 80%: (5h-1h) / 5h = 80%, reducing the workload and labor intensity of on-site maintenance personnel. The device supports... The diverse power supply options allow for selection based on actual operating conditions, significantly expanding the refueling work area. Furthermore, for extended periods of oil circulation and purification, ground-based power supply offers greater economic efficiency compared to previous vehicle-mounted diesel generators, reducing carbon dioxide and noise emissions. The connection between the refueling hose and connector utilizes a standardized shut-off valve (self-sealing interface) and conversion interface, enabling refueling support for multiple users of the same fuel. Adding new users only requires configuring a standardized refueling connector, effectively resolving the redundancy issue of previous refueling equipment, greatly saving production costs, and promoting the standardization of refueling support equipment for flight test sites.

[0089] Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A multi-functional integrated aircraft fuel refueling and support device, characterized in that, include: Automotive components and fuel filling modules; The vehicle chassis serves as the installation platform for the fuel filling module. The fuel filling module is integrated and installed on the vehicle chassis through the vehicle body. The layout of the vehicle body from front to back along the front of the vehicle is as follows: generator set installation area (19), fuel tank I installation area (20), refueling component I installation area (21), refueling component II installation area (22), fuel tank II installation area (23), refueling hose and electric reel installation area (24); and the left rear side of the vehicle chassis is provided with electrical cabinet installation area (25) and refueling system control interface installation area (26). The various components installed inside the vehicle body form a fuel filling module, which integrates multiple independent filling systems. The vehicle body also integrates a generator set, an electrical control system, and multiple independent filling systems. Each filling system includes: a fuel tank, a fuel pump assembly, a fuel supply pipe, a fuel hose and reel, a fuel connector, and an operation panel. The fuel system connects to the aircraft's fuel filling interface via the fuel hose connector, and the fuel pump drives a certain fuel filling pressure to refuel the aircraft's hydraulic and lubrication systems.

2. The multi-functional integrated aircraft fuel refueling and support device according to claim 1, characterized in that, The fuel filling module includes the following components installed in various areas of the vehicle body: generator exhaust pipe (1), generator (6), vehicle generator (13), fuel filling pipeline assembly (8), fuel filling system tank II (9), fuel filling pipeline storage box (10), fuel filling hose and reel (11), fuel filling connector storage box (12), fuel filling system tank I (14), hand pump (15), fuel filling system control interface (16), electrical cabinet (17), ground power connection cable storage box (18), as well as fuel pump assembly, filter assembly and filter dewatering assembly.

3. The multi-functional integrated aircraft fuel refueling and support device according to claim 2, characterized in that, The following components are installed in each area of ​​the enclosure: The generator set installation area (19) is equipped with a generator (6) and a vehicle-mounted generator (13); The fuel tank I installation area (20) is equipped with three fuel tanks I (14) for the refueling system; The refueling component I installation area (21) is equipped with an oil pump assembly, a refueling pipeline assembly (8), and a water filtration assembly; The refueling component II installation area (22) is equipped with an oil pump assembly, a refueling pipeline assembly (8), and a filter assembly; Two refueling system tanks (9) are installed in the tank II installation area (23); The refueling hose and electric reel installation area (24) is equipped with refueling hoses and reels (11) for 5 refueling systems and refueling connector storage boxes (12); The refueling system control interface installation area (26) on the left rear side is equipped with the refueling system control interface (16); Electrical cabinets (17) are installed in the electrical cabinet installation area (25); The generator exhaust pipe (1) is installed on the top of the vehicle body to guide and discharge the smoke and dust generated during the generator operation. The refueling line storage box (10) and the ground power connection cable storage box (18) are installed at the bottom rear side of the vehicle chassis.

4. The multi-functional integrated aircraft fuel refueling and support device according to any one of claims 1 to 3, characterized in that, Each oil tank in the oil filling module includes a tank body, a liquid level sensor, a liquid level indicator, and a pipeline mounting base. Each tank body has high and low liquid level protection functions, which are used to automatically alarm when the liquid level in the tank is higher or lower than the corresponding alarm value, by illuminating the corresponding alarm light on the operation interface, thereby causing the corresponding filling system to delay or stop working.

5. The multi-functional integrated aircraft fuel refueling and support device according to any one of claims 1 to 3, characterized in that, Each independent refueling system includes a circulation pump, a vacuum pump, and a refueling pump, which are used to replenish fuel tanks and refuel aircraft. The pumps are used as power sources, and the refueling pressure is adjustable within a certain range. In addition, the fuel pump assembly is also equipped with a hand-cranked pump for emergency refueling of aircraft.

6. The multi-functional integrated aircraft fuel refueling and support device according to any one of claims 1 to 3, characterized in that, Each independent refueling system is equipped with shut-off valves and bypass valves at key valves on the refueling pipeline; these are used to cut off the oil circuit and reduce oil leakage when the key valves are disassembled; and to improve the maintainability of the equipment by opening the bypass valves for emergency refueling. Each independent refueling system is equipped with an online metering interface on its refueling pipeline. Metering equipment is connected to the online metering interface, and the metering switch is turned on to perform online metering of the equipment's pressure and flow sensors, thus avoiding the need to disassemble and send the sensors for inspection.

7. The multi-functional integrated aircraft fuel refueling and support device according to any one of claims 1 to 3, characterized in that, The oil filling module integrates multiple filling systems, including: oil circulation and purification equipment, vacuum dehydration equipment, and oil filling components, to achieve oil cleaning and purification, dehydration and filling. The oil circulation and purification equipment includes a circulation pump and a filter; the vacuum dehydration equipment includes a heater, an air filter, a buffer tank, an oil-water separator, and a vacuum pump; the oil filling components include a proportional pressure reducing valve, a pressure sensor, a filter, a flow meter, a solenoid valve, a filling hose, a ball valve, and a quick-release connector.

8. The multi-functional integrated aircraft fuel refueling and support device according to claim 7, characterized in that, The refueling system is divided into two categories according to the different requirements of the fuel used in aircraft refueling: vacuum dehydration and purification system and cleaning and purification system.

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