Automatic exhausting and oiling device for air-entraining pressurizing vacuum oil tank and using method of automatic exhausting and oiling device

Abstract

The invention discloses an air-entraining pressurizing vacuum oil tank automatic exhausting and oiling device which comprises an air pressurizing pipe (2), a fuel oil filling device (3), a fuel oil filling pipe (4) and an oil pumping pipe (5). The fuel oil filling device (3) comprises a compressed air outlet (31), a fuel oil outlet (32), an oil inlet (33), a fuel oil way and a pressurizing air way. One end of the air pressurizing pipe (2) is connected with each air bag (12), the other end of the air pressurizing pipe (2) is connected with a compressed air outlet (31) of the fuel oil filling device (3), one end of the fuel oil filling pipe (4) is connected with the oil bag (11), the other end of the fuel oil filling pipe (4) is connected with a fuel oil outlet (32) of the fuel oil filling device (3), one end of the oil pumping pipe (5) is connected with an oil inlet (33) of the fuel oil filling device (3), and the other end of the oil pumping pipe (5) is connected with the fuel oil barrel (6). The oil filling process / oil pumping process is fully automatically completed, a pipeline connector is automatically disconnected and sealing is completed after fuel oil filling is completed, and manual operation or manual exhaust is not needed.

Description

Technical Field

[0001] The invention belongs to the technical field of unmanned aerial vehicle ground support, and in particular relates to an automatic exhaust and refueling device for an air-bleed booster vacuum oil tank and a use method thereof. Background Art

[0002] With the rapid development of drone technology, drones are increasingly used in military and civilian fields. In addition to the performance of the drone itself, the ease of use and rapid response of ground support equipment are also key to evaluating the performance of a drone. In the daily use of drones, refueling and oil pumping operations are routine operations in each flight. Therefore, reducing the complexity of the refueling and oil pumping process to improve the efficiency of the process is particularly important for improving the practical performance of drones.

[0003] At present, more and more small drones use TPU materials to make drone soft fuel tanks, especially vacuum soft fuel tanks that are completely isolated from air. This type of fuel tank is low-cost, can maximize the use of fuel tank space, and has no restrictions on flight maneuvers. However, the refueling process of the fuel tank requires the complete exclusion of air, which is very difficult for the operator. Before refueling, there may be fuel and air in the tank at the same time. The current common vacuum pump cannot complete the vacuum operation when these two media exist at the same time. Once bubbles appear in the vacuum soft tank, it will cause the engine to work unstably or even stall, seriously affecting flight safety.

[0004] In recent years, the coordination and autonomy of swarm drones have become the focus of research for many scholars. For scenarios where multiple drones need to be refueled before taking off, intelligent and automated refueling devices can significantly reduce the operational complexity of the refueling process, reduce the refueling operation time and labor costs, especially in high-density drone launch boxes with small spaces. Automatic plugging and unplugging greatly reduces the difficulty of operation. At the same time, traditional fuel tanks that use direct refueling cannot meet the needs of large-scale flight maneuvers. For large-scale swarm drones using vacuum soft tanks, the manual refueling and exhaust operation method obviously cannot meet the needs of the usage scenario. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an automatic exhaust and refueling device for an air-injection booster vacuum oil tank with one-button automatic exhaust and refueling and one-button automatic oil extraction functions and a method for using the same. The technical solution adopted by the present invention is as follows:

[0006] An automatic exhaust and refueling device for an air-entrained, pressurized vacuum oil tank, wherein the oil tank is a soft oil tank, including an oil bag and a plurality of air bags, each of which is connected to the oil bag but not in communication with the oil bag.

[0007] The device comprises an air boost pipe, a fuel filling device, a fuel filling pipe, and an oil extraction pipe. The fuel filling device comprises a compressed air outlet, a fuel outlet, an oil inlet, a fuel path, and a pressurized air path. One end of the air boost pipe is connected to each air bag, and the other end is connected to the compressed air outlet of the fuel filling device. One end of the fuel filling pipe is connected to the oil bag, and the other end is connected to the fuel outlet of the fuel filling device. One end of the oil extraction pipe is connected to the oil inlet of the fuel filling device, and the other end is connected to the fuel tank.

[0008] The fuel path is connected between the fuel outlet and the fuel inlet, and the boost air path is connected to the compressed air outlet.

[0009] Furthermore, the fuel circuit includes a Y-shaped tee and two branches. The fuel outlet is connected to the Y-shaped tee and then connected to the two branches respectively, one of which is connected to the solenoid valve II, and the other is connected to the refueling pump and the fuel flow meter. The two branches are then merged into the first T-shaped tee and connected to the fuel inlet.

[0010] Furthermore, the boost air circuit includes a second T-shaped three-way and two branches. The compressed air outlet is connected to the second T-shaped three-way and then connected to the two branches respectively, one of which is connected to the air boost pump and the other is connected to the solenoid valve I.

[0011] Furthermore, the fuel filling device also includes a refueling device control unit, a display screen, a fuel filling button, and a fuel suction button. The display screen has a touch function and can input the soft fuel tank capacity. The refueling device control unit is used to receive the soft fuel tank capacity, fuel filling button signal, fuel suction button signal, fuel flow meter data, and air booster pump outlet pressure data input by the display screen, and control the refueling device status display on the display screen, the start and stop of the refueling pump, the start and stop of the air booster pump, and the on and off of solenoid valve I and solenoid valve II.

[0012] Furthermore, the oil bladder includes an oil bladder interface, one end of the fuel filling pipe is connected to the oil bladder interface, each of the air bags includes an air bag interface, and one end of the air boost pipe is connected to each air bag interface.

[0013] Furthermore, the oil bag interface and the air bag interface adopt self-sealing male joints, one end of the fuel filling pipe and one end of the air boost pipe adopt self-sealing female joints, the fuel outlet, the compressed air outlet and the oil inlet adopt self-sealing female joints, and the other end of the fuel filling pipe, the other end of the air boost pipe and one end of the oil extraction pipe adopt self-sealing male joints.

[0014] Furthermore, it also includes a steering gear, a steering gear rocker arm, a connecting rod, and a self-sealing joint snap ring. The self-sealing joint female head includes a steel ball arranged on the side, and the self-sealing joint snap ring is sleeved on the outside of the self-sealing joint female head. The two ends of the connecting rod are respectively connected to the self-sealing joint snap ring and one end of the steering gear rocker arm, and the other end of the steering gear rocker arm is connected to the steering gear. When the steering gear rocker arm is vertically downward, the self-sealing joint snap ring is in a locked state, pressing the steel ball on the side of the self-sealing joint female head to complete the locking between the self-sealing joint male head and the self-sealing joint female head. When the steering gear rocker arm rotates, the steering gear rocker arm pulls the connecting rod to drive the self-sealing joint snap ring to move away from the self-sealing joint male head, the self-sealing joint snap ring can move to a relaxed state, the steel ball on the side of the self-sealing joint female head is exposed, the self-sealing joint female head is loosened, and separated from the self-sealing joint male head. After separation, the self-sealing joint male head and the self-sealing joint female head will be in a self-sealing state respectively.

[0015] A method for using the automatic exhaust and refueling device for the air-entrained vacuum oil tank described above, during the refueling operation, the soft oil tank capacity is input on the display screen, the fuel filling button is pressed, the solenoid valve I is opened, the air bag is vented to the atmosphere, the solenoid valve II is closed, the refueling pump is operated, the fuel is extracted from the fuel barrel, flows through the oil extraction pipe, the refueling pump, the fuel flow meter, the fuel filling pipe, enters the oil bag, and refuels a predetermined proportion of the soft oil tank capacity; the refueling pump stops working, the solenoid valve II is opened, the solenoid valve I is closed, the air booster pump is turned on, and compressed air is injected into the air bag, the air bag expands, squeezes the oil bag, and the residual air in the oil bag flows back to the fuel barrel through the fuel filling pipe, the solenoid valve II, and the oil extraction pipe; after the outlet pressure of the air booster pump reaches the predetermined pressure, the air booster pump stops working, the solenoid valve II is closed, the refueling pump works, the solenoid valve I is opened, the oil bag squeezes the air bag to exhaust air to the outside, the fuel flow meter records the amount of fuel added to the oil bag, the fuel flow meter records the fuel flow reaches the soft oil tank capacity, the refueling pump stops working, and the one-button fuel filling process is completed;

[0016] During the oil pumping operation, press the fuel suction button, solenoid valve II opens, solenoid valve I closes, the air booster pump starts, and compressed air is injected into the air bag. The air bag expands and squeezes the oil bag. The fuel in the oil bag flows back to the fuel barrel through the fuel filling pipe, solenoid valve II, and oil pumping pipe. After the outlet pressure of the air booster pump reaches the preset pressure, the residual air and fuel in the oil bag are discharged, completing the oil pumping operation.

[0017] Furthermore, the predetermined proportion is 10%.

[0018] Furthermore, the predetermined pressure is 0.1-0.2 MPa.

[0019] Compared with the prior art, the advantages of the present invention include:

[0020] (1) When used in conjunction with a soft fuel tank, the program can autonomously complete the exhaust and refueling process of the soft fuel tank; (2) Avoid using a vacuum pump during the exhaust process before refueling, reducing the difficulty and cost of selecting the entire refueling equipment; (3) During the refueling process, a small amount of fuel is pre-filled, and the air bag squeezes the oil bag, and the air and fuel in the oil bag are discharged together. After the air is exhausted, a small amount of residual fuel still occupies the internal space of the oil bag. Compared with vacuum extraction, this method of air removal is more thorough; (4) The program autonomously completes the fuel suction process of the soft fuel tank; (5) After the refueling and oil extraction process is completed, the program autonomously disconnects the pipeline connection between the fuel tank and the refueling equipment.

[0021] In addition to the features and advantages described above, the principles and other features and advantages of the present invention are further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the composition of the automatic exhaust and refueling device of the air-entrained booster vacuum oil tank of the present invention.

[0023] Figure 2 This is a schematic diagram of the fuel filling device.

[0024] Figure 3 This is a schematic diagram of the internal components of the fuel filling device.

[0025] Figure 4 This is a schematic diagram of the automatic plug removal device.

[0026] Figure 5 This is a diagram of the locked state of the automatic plug removal device.

[0027] Figure 6 Unlocks the status diagram for the automatic plug removal device.

[0028] The accompanying drawings are as follows: 1. soft oil tank; 11. oil bag; 12. air bag; 13. air bag interface; 14. oil bag interface; 2. air boost pipe; fuel filling device; 31. compressed air outlet; 32. fuel outlet; 33. fuel inlet; 34. display screen; 35. fuel filling button; 36. fuel suction button; 37. solenoid valve I; 38-1. first T-type three-way; 38-2. second T-type three-way; 39. air boost pump; 310. refueling device control unit; 311. Y-type three-way; 312. fuel flow meter; 313. refueling pump; 314. solenoid valve II; 4. fuel filling pipe; 5. oil extraction pipe; 61. self-sealing joint female end; 62. self-sealing joint male end; 63. connecting rod; 64. steering gear rocker arm; 65. steering gear; 66. steel ball; 67. self-sealing joint clamp. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The implementation of the present invention is described in detail below in conjunction with the specific embodiments.

[0030] Combination Figure 1 , an automatic exhaust and refueling device for an air-entrained, boosted, vacuum oil tank, the oil tank being a soft oil tank 1, comprising an oil bag 11 and air bags 12 connected to both sides of the oil bag 11, each air bag 12 being connected to the oil bag 11 but not connected, the refueling device comprising a fuel filling device 3, a fuel filling pipe 4, an air boost pipe 2, and an oil extraction pipe 5. The pipe joints between the fuel filling pipe 4, the air boost pipe 2, the oil extraction pipe 5, the fuel filling device 3, and the soft oil tank 1 are all connected by self-sealing joints. In particular, the connecting joints of the fuel filling pipe 4, the air boost pipe 2, and the soft oil tank 1 adopt an automatic plug-out device.

[0031] Combination Figure 2 The fuel filling device 3 is divided into an external display operation part and an internal device part. The external display operation part is composed of a display screen 34, a fuel filling button 35, and a fuel suction button 36. The display screen 34 has a touch function, and the volume of the soft fuel tank 1 can be input, and then the refueling process can be set by the program.

[0032] Combination Figure 3 The internal equipment of the fuel filling device 3 is composed of a fuel line, a pressurized air line, and a refueling device control unit 310. The fuel line is connected to the Y-type tee 311 from the fuel outlet 32 ​​and then divided into two branches, one of which is connected to the solenoid valve II 314, and the other is connected to the refueling pump 313 and the fuel flow meter 312. The two branches are then merged into the first T-type tee 38-1 and connected to the fuel inlet 33. The pressurized air line is connected to the second T-type tee 38-2 from the compressed air outlet 31 and divided into two lines, one of which is connected to the air booster pump 39, and the other is connected to the solenoid valve I 37, which is used to control whether the airbag is connected to the atmosphere. The refueling device control unit 310 receives the volume of the soft fuel tank 1, the fuel filling button 35 signal, the fuel suction button 36 signal, the fuel flow meter 312 data, and the air booster pump 39 outlet pressure data input from the display screen 34, and controls the display of the refueling device status on the display screen 34, the operation of the refueling pump 313, the operation of the air booster pump 39, and the on and off of the solenoid valve I 37 and the solenoid valve II 314. The fuel flow meter 312 can feed back the real-time value of the fuel flow to the refueling device control unit 310, and the refueling device control unit 310 can manually reset the count before each refueling pump 313 is started.

[0033] Combination Figure 3 , Figure 4During the refueling operation, after the refueling pipeline connection is completed, the volume of the soft fuel tank 1 is input on the display screen 34, and the fuel filling button 35 is pressed. The program automatically performs the following automatic operations: the solenoid valve I 37 is opened, the air bag 12 is connected to the atmosphere, the solenoid valve II 314 is closed, the fuel bypass is closed, the refueling pump 313 is working, and the fuel is extracted from the fuel barrel 6, flows through the oil extraction pipe 5, the refueling pump 313, the fuel flow meter 312, and the fuel filling pipe 4, and enters the oil bag 11, and the fuel of 10% of the volume of the soft fuel tank 1 is quantitatively added. The refueling pump 313 stops working, the solenoid valve II 314 is opened, the solenoid valve I 37 is closed, and the air booster pump 39 is opened to inject compressed air into the air bag 12, the air bag 12 expands, squeezes the oil bag 11, and the residual air in the oil bag 11 and the fuel flows back to the fuel barrel 6 through the fuel filling pipe 2, the solenoid valve II 314, and the oil extraction pipe 5. The outlet pressure of the air booster pump 39 reaches 0.1-0.2Mpa, the air booster pump 39 stops working, the airbag 12 is fully inflated, and the remaining air and fuel in the oil bag 11 are completely discharged. The solenoid valve II 314 is closed, the refueling pump 313 is working, the solenoid valve I 37 is opened, the airbag 12 is exhausted to the outside, the fuel flow meter 312 records the amount of fuel added to the oil bag 11, the fuel flow meter 312 records that the fuel flow reaches the volume of the soft oil tank 1, the refueling pump 313 stops working, and the automatic self-sealing joint device removes the two self-sealing joints connected to the fuel tank. The solenoid valve II 314 is opened to complete the one-key fuel filling process. When refueling, first add a small amount of fuel to the soft oil tank 1, the airbag 12 is inflated and squeezes the oil bag 11 to discharge the air mixed with the fuel from the upper end of the fuel tank. When the air is completely exhausted, there may still be a small amount of fuel in the fuel tank, and the remaining small amount of fuel will not affect the complete filling of the fuel tank with fuel. Then stop pressurizing the airbag 12, restore the ventilation state between the airbag 12 and the outside, and add fuel to the oil bag 11 again. The flow meter monitors that the fuel filling amount reaches the set value, and the fuel filling is completed.

[0034] Combination Figure 3 , Figure 4 During the oil pumping operation, after the fueling pipeline connection is completed, the fuel pumping button 36 is pressed, the solenoid valve II is opened, the solenoid valve I is closed, the air booster pump 39 is turned on, and compressed air is injected into the airbag 12, the airbag 12 expands, and the oil bag 11 is squeezed. The fuel in the oil bag 11 flows back to the fuel barrel 6 through the fuel filling pipe 2, the solenoid valve II 314, and the oil pumping pipe 5. The pressure of the air booster pump 39 reaches 0.1-0.2Mpa, the airbag 12 is fully expanded, and the residual air and fuel in the oil bag 11 are completely discharged.

[0035] The oil bag interface 14 and the air bag interface 13 use a self-sealing male joint 62, one end of the fuel filling pipe 4 and one end of the air boost pipe 2 use a self-sealing female joint 61, the fuel outlet 32, the compressed air outlet 31 and the oil inlet 33 use a self-sealing female joint 61, and the pipeline is kept sealed at the moment of disconnection. The other end of the fuel filling pipe 4, the other end of the air boost pipe 2 and one end of the oil extraction pipe 5 use a self-sealing male joint 62.

[0036] Combination Figure 5 The automatic plug removal device includes a self-sealing joint male head 62, a self-sealing joint female head 61, and a steering gear 65, a steering gear rocker arm 64, and a connecting rod 63 installed on the self-sealing joint female head 61. The two ends of the connecting rod 63 are respectively connected to the self-sealing joint clamp ring 67 and the steering gear rocker arm 64. When the steering gear rocker arm 64 is vertically downward, the self-sealing joint clamp ring 67 is in a locked state, pressing the steel ball 66 on the side of the self-sealing joint female head 61 to complete the joint locking. Figure 6 When the steering gear rocker arm 64 turns to the right, the steering gear rocker arm 64 pulls the connecting rod 63, and the connecting rod moves to the right, driving the self-sealing joint clamp 67 to move. When the self-sealing joint clamp 67 moves to a relaxed state, the steel ball 66 on the side of the self-sealing joint female head 61 is exposed, and the self-sealing joint female head 61 is loosened and separated from the self-sealing joint male head 62. After separation, the self-sealing joint male head 62 and the self-sealing joint female head 61 will be in a self-sealing state respectively.

[0037] By using the above-mentioned automatic exhaust and refueling device, before refueling, the self-sealing joints of the refueling pipe and the air boost pipe are connected to the self-sealing joints of the fuel tank, and the fuel filling button is pressed to complete the operations of exhausting and refueling the fuel tank and disconnecting the refueling pipe and the air boost pipe, while the fuel suction button is pressed to complete the operations of draining the fuel tank and disconnecting the refueling pipe and the air boost pipe.

[0038] The automatic exhaust and refueling device of the bleed air boost vacuum tank of the present invention has a fuel filling device 3 with one-touch fuel filling and one-touch fuel suction process, and no manual exhaust is required during use. After the refueling device control unit 310 determines that the fuel filling and fuel suction are completed, the control unit 65 completes the automatic removal of the self-sealing joint, realizing the automation of refueling and oil extraction.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic exhaust and refueling device for a bleed air boost vacuum oil tank, the oil tank being a soft oil tank (1), comprising an oil bag (11) and a plurality of air bags (12), each of the air bags (12) being connected to the oil bag (11) but not in communication, characterized in that: The device comprises an air boost pipe (2), a fuel filling device (3), a fuel filling pipe (4), and an oil extraction pipe (5); the fuel filling device (3) comprises a compressed air outlet (31), a fuel outlet (32), an oil inlet (33), a fuel path, and a boost air path; one end of the air boost pipe (2) is connected to each air bag (12), and the other end is connected to the compressed air outlet (31) of the fuel filling device (3); one end of the fuel filling pipe (4) is connected to the oil bag (11), and the other end is connected to the fuel outlet (32) of the fuel filling device (3); one end of the oil extraction pipe (5) is connected to the oil inlet (33) of the fuel filling device (3), and the other end is connected to the fuel barrel (6); The fuel line is connected between the fuel outlet (32) and the fuel inlet (33), and the boost air line is connected to the compressed air outlet (31).

2. The automatic exhaust and refueling device for the bleed air boost vacuum oil tank according to claim 1, characterized in that: The fuel line comprises a Y-shaped tee (311) and two branches. The fuel outlet (32) is connected to the Y-shaped tee (311) and then connected to the two branches respectively, one of which is connected to the solenoid valve II (314), and the other is connected to the fuel pump (313) and the fuel flow meter (312). The two branches are then merged into a first T-shaped tee (38-1) and connected to the fuel inlet (33).

3. The automatic exhaust and refueling device for the bleed air boost vacuum oil tank according to claim 2, characterized in that: The pressurized air circuit comprises a second T-shaped three-way connection (38-2) and two branches. The compressed air outlet (31) is connected to the second T-shaped three-way connection (38-2) and then respectively connected to the two branches, one of which is connected to an air booster pump (39) and the other is connected to a solenoid valve I (37).

4. The automatic exhaust and refueling device for the bleed air boost vacuum oil tank according to claim 3 is characterized in that: The fuel filling device (3) further comprises a fuel filling device control unit (310), a display screen (34), a fuel filling button (35), and a fuel suction button (36). The display screen (34) has a touch function and can input the volume of the soft fuel tank (1). The fuel filling device control unit (310) is used to receive the volume of the soft fuel tank (1), the fuel filling button (35) signal, the fuel suction button (36) signal, the fuel flow meter (312) data, and the air booster pump (39) outlet pressure data input by the display screen (34), and control the display of the fuel filling device status on the display screen (34), the start and stop of the fuel filling pump (313), the start and stop of the air booster pump (39), and the on and off of the solenoid valve I (37) and the solenoid valve II (34).

5. The automatic exhaust and refueling device for the bleed air boost vacuum oil tank according to claim 4, characterized in that: The oil bag (11) comprises an oil bag interface (14), one end of the fuel filling pipe (4) is connected to the oil bag interface (14), each of the air bags (12) comprises an air bag interface (13), one end of the air boost pipe (2) is connected to each air bag interface (13).

6. The automatic exhaust and refueling device for the bleed air boost vacuum oil tank according to claim 5, characterized in that: The oil bag interface (14) and the air bag interface (13) use a self-sealing male joint (62); one end of the fuel filling pipe (4) and one end of the air boost pipe (2) use a self-sealing female joint (61); the fuel outlet (32), the compressed air outlet (31) and the fuel inlet (33) use a self-sealing female joint (61); the other end of the fuel filling pipe (4), the other end of the air boost pipe (2) and one end of the oil extraction pipe (5) use a self-sealing male joint (62).

7. The automatic exhaust and refueling device for the bleed air boost vacuum oil tank according to claim 6, characterized in that: It also includes a steering gear (65), a steering gear rocker arm (64), a connecting rod (63), and a self-sealing joint clamp ring (67). The self-sealing joint female head (61) includes a steel ball (66) arranged on the side. The self-sealing joint clamp ring (67) is sleeved on the outside of the self-sealing joint female head (61). The two ends of the connecting rod (63) are respectively connected to the self-sealing joint clamp ring (67) and one end of the steering gear rocker arm (64). The other end of the steering gear rocker arm (64) is connected to the steering gear (65). When the steering gear rocker arm (64) is vertically downward, the self-sealing joint clamp ring (67) is in a locked state, pressing the steel ball on the side of the self-sealing joint female head (61). (66), completing the locking between the self-sealing joint male head (62) and the self-sealing joint female head (61), when the steering gear rocker arm (64) rotates, the steering gear rocker arm (64) pulls the connecting rod (63) to drive the self-sealing joint clamping ring (67) to move away from the self-sealing joint male head (62), the self-sealing joint clamping ring (67) can move to a relaxed state, the steel ball (66) on the side of the self-sealing joint female head (61) is exposed, the self-sealing joint female head (61) is loosened, and the separation from the self-sealing joint male head (62) is completed. After the separation, the self-sealing joint male head (62) and the self-sealing joint female head (61) will be in a self-sealing state respectively.

8. The method for using the automatic exhaust and refueling device for the bleed air boost vacuum oil tank according to any one of claims 4 to 7, characterized in that: During the refueling operation, the volume of the soft oil tank (1) is input on the display screen (34), and the fuel filling button (35) is pressed, solenoid valve I (37) is opened, the air bag (12) is connected to the atmosphere, solenoid valve II (314) is closed, and the refueling pump (313) is operated, and the fuel is extracted from the fuel barrel (6), flows through the oil extraction pipe (5), the refueling pump (313), the fuel flow meter (312), and the fuel filling pipe (4), and enters the oil bag (11), and the fuel of a predetermined proportion of the volume of the soft oil tank (1) is filled; the refueling pump (313) stops working, the solenoid valve II (314) is opened, the solenoid valve I (37) is closed, and the air booster pump (39) is opened to inject compressed air into the air bag (12), and the air bag (12) The oil bag (11) expands and squeezes the oil bag (11), and the residual air in the oil bag (11) and the fuel flow back to the fuel tank (6) through the fuel filling pipe (2), the electromagnetic valve II (314), and the oil extraction pipe (5); after the outlet pressure of the air booster pump (39) reaches a predetermined pressure, the air booster pump (39) stops working, the electromagnetic valve II (314) is closed, the refueling pump (313) works, the electromagnetic valve I (37) is opened, the oil bag (11) squeezes the air bag (12) to exhaust air to the outside, the fuel flow meter (312) records the amount of fuel added to the oil bag (11), the fuel flow meter (312) records that the fuel flow reaches the capacity of the soft fuel tank (1), and the refueling pump (313) stops working, completing the one-key fuel filling process; During the oil extraction operation, the fuel suction button 36 is pressed, the electromagnetic valve II (314) is opened, the electromagnetic valve I (37) is closed, and the air booster pump (39) is turned on to inject compressed air into the air bag (12). The air bag (12) expands and squeezes the oil bag (11). The fuel in the oil bag (11) flows back to the fuel barrel (6) through the fuel filling pipe (2), the electromagnetic valve II (314), and the oil extraction pipe (5). After the outlet pressure of the air booster pump (39) reaches a predetermined pressure, the remaining air and fuel in the oil bag (11) are discharged, and the oil extraction operation is completed.

9. The method for using the automatic exhaust and refueling device for the bleed air boost vacuum oil tank according to claim 8, characterized in that: The predetermined ratio is 10%.

10. The method for using the automatic exhaust and refueling device for the bleed air boost vacuum oil tank according to claim 8, characterized in that: The predetermined pressure is 0.1-0.2 MPa.

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