Unmanned aerial vehicle negative overload flight fuel supply device and unmanned aerial vehicle

Abstract

The application provides a kind of unmanned aerial vehicle negative overload flight fuel supply device and unmanned aerial vehicle in the technical field of unmanned aerial vehicle fuel system, comprising oil pipe, check valve, slide rail and gravity oil suction nozzle, slide rail is installed in fuel supply cabin, gravity oil suction nozzle is sleeved on slide rail, check valve is arranged on both sides of oil pipe on oil supply cabin, and both sides of oil supply cabin supply oil to fuel supply cabin through oil pipe.The application vertically sets slide rail in fuel supply cabin, gravity oil suction nozzle is nested on slide rail, when unmanned aerial vehicle is in negative overload or inverted flight condition, gravity oil suction nozzle can slide up and down along slide rail under the effect of gravity, and always maintains the state of being immersed in oil surface in fuel supply cabin, to ensure that fuel supply cabin continuously supplies oil to upper engine of unmanned aerial vehicle without interruption.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) fuel system technology, specifically to a fuel supply device for UAVs under overload flight and the UAV itself. Background Technology

[0002] During flight maneuvers, drones often experience brief periods of negative G-force flight. Traditional drone fuel tanks are designed with dedicated fuel collection vessels for these conditions to ensure fuel supply. Since negative G-force flight is typically brief, lasting only tens of seconds, the fuel collection vessels are relatively small. However, for longer periods of negative G-force flight, the design of these vessels is clearly insufficient to meet fuel supply requirements and cannot provide continuous fuel to the drone's engines. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the purpose of this invention is to provide a fuel supply device for unmanned aerial vehicle (UAV) overload flight and the UAV itself.

[0004] According to the present invention, a fuel supply device for unmanned aerial vehicle (UAV) overload flight includes a fuel delivery system and a fuel supply system. The fuel delivery system includes a fuel delivery pipe and a one-way valve, and the fuel supply system includes a slide rail and a gravity suction nozzle.

[0005] The slide rail is installed inside the oil supply tank, the gravity suction nozzle is sleeved on the slide rail, the one-way valve is installed on the oil supply pipe on both sides of the oil supply tank, and the oil supply tank on both sides supplies oil to the oil supply tank through the oil supply pipe;

[0006] When the UAV is performing negative overload flight or inverted flight, the gravity suction nozzle slides up and down along the slide rail with the oil surface in the fuel tank under the effect of gravity. The gravity suction nozzle is always kept submerged in the oil surface, ensuring that the fuel tank continuously supplies fuel to the engine of the UAV.

[0007] In some embodiments, a partition is glued to both sides of the interior of the oil supply tank. The partition has a flanged structure, and the oil supply tank is isolated from the oil transport tanks on both sides by the partition.

[0008] In some embodiments, the oil supply tank and the oil transfer tank are interconnected by the oil transfer pipe, which includes an oil transfer pipe one and an oil transfer pipe two, and the oil transfer tanks on both sides transfer oil to the oil supply tank through the oil transfer pipe one and the oil transfer pipe two.

[0009] In some embodiments, the slide rail adopts an upper and lower support structure, with the upper and lower ends of the slide rail respectively connected to the upper and lower bottom surfaces of the fuel tank.

[0010] In some embodiments, the gravity suction nozzle is provided with an annular hole, and the gravity suction nozzle is nested on the slide rail through the annular hole and slides freely up and down.

[0011] In some embodiments, one end of the gravity suction nozzle is provided with a fuel supply hose, and the fuel supply pipe further includes a third fuel supply pipe. The gravity suction nozzle supplies fuel to the engine on the UAV through the fuel supply hose connected to the third fuel supply pipe.

[0012] In some embodiments, when the UAV is flying under negative overload conditions, the gravity suction nozzle slides up and down along the slide rail under the effect of gravity and is always within the oil surface, ensuring that the UAV supplies fuel to the engine without interruption when flying under negative overload conditions.

[0013] When the UAV is in inverted flight mode, the fuel in the fuel tank falls from the bottom surface of the fuel tank to the top surface of the fuel tank. The gravity suction nozzle slides down the slide rail to the top surface of the fuel tank by gravity and is always within the fuel level, ensuring that the fuel supply to the engine is uninterrupted when the UAV is inverted.

[0014] An unmanned aerial vehicle (UAV) includes the aforementioned UAV overload flight fuel supply device.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention involves vertically installing a slide rail inside the fuel tank, with a gravity-driven fuel suction nozzle nested on the slide rail. When the UAV is under negative overload or inverted flight conditions, the gravity-driven fuel suction nozzle can slide up and down along the slide rail under the effect of gravity and always remain submerged in the fuel tank, ensuring that the fuel tank continuously supplies fuel to the engine on the UAV.

[0017] By installing a one-way valve on the oil pipeline to prevent backflow when the oil pipeline supplies oil to the oil tank, the oil tank of this invention combines the functions of the oil supply tank and the negative overload tank, saving installation space, reducing the weight of the UAV, and reducing fuel consumption. Attached Figure Description

[0018] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the overload flight fuel supply device for UAVs of the present invention.

[0020] Figure label:

[0021] Slide rail 1, one-way valve 6

[0022] Gravity suction nozzle 2, partition 7

[0023] Oil pipeline 1-3, oil supply tank 8

[0024] Pipeline 2, Tank 9

[0025] Pipeline 35 Detailed Implementation

[0026] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0027] Example 1

[0028] like Figure 1 As shown, the UAV overload flight fuel supply device of the present invention includes a fuel delivery system and a fuel supply system. The fuel delivery system includes a fuel delivery pipe and a one-way valve 6, and the fuel supply system includes a slide rail 1 and a gravity suction nozzle 2. The slide rail 1 is installed inside the fuel supply tank 8, and the gravity suction nozzle 2 is sleeved on the slide rail 1. One-way valves 6 are installed on the fuel delivery pipes on both sides of the fuel delivery tank 9, and the fuel delivery tanks on both sides supply fuel to the fuel supply tank 8 through the fuel delivery pipes. When the UAV is performing overload flight or inverted flight, the gravity suction nozzle 2 slides up and down along the slide rail 1 under the effect of gravity, following the oil surface in the fuel supply tank 8. The gravity suction nozzle 2 is always kept submerged in the oil surface, ensuring that the fuel supply tank 8 continuously supplies fuel to the engine of the UAV.

[0029] The fuel supply tank 8 has partitions 7 bonded to both sides inside. The partitions 7 have a flanged structure, and the fuel supply tank 8 is isolated from the two side fuel tanks 9 by the partitions 7. The fuel supply tank 8 and the fuel tanks 9 are connected by fuel pipes, including fuel pipe 3 and fuel pipe 4. The two side fuel tanks 9 supply fuel to the fuel supply tank 8 through fuel pipe 3 and fuel pipe 4. The slide rail 1 has an upper and lower support structure, with its upper and lower ends connected to the upper and lower bottom surfaces of the fuel supply tank 8, respectively. The gravity suction nozzle 2 has an annular hole, and the gravity suction nozzle 2 is nested in the slide rail 1 through the annular hole and slides freely up and down. One end of the gravity suction nozzle 2 is equipped with a fuel supply hose, and the fuel supply pipe also includes fuel pipe 5. The gravity suction nozzle 2 supplies fuel to the engine on the UAV through the fuel supply hose connected to fuel pipe 5.

[0030] Example 2

[0031] A drone includes the drone overload flight fuel supply device of Embodiment 1.

[0032] Working principle

[0033] The typical fuel supply technology requirement for negative overload flight is a flow rate of 2.4 L / min, while the negative overload flight duration is 5 minutes. If the UAV fuel tank adopts the previous fuel collection tank design, it cannot meet the requirements. Therefore, the fuel supply tank in the middle section is designed as a section that combines the functions of a fuel supply tank and a negative overload fuel tank.

[0034] When the fuel supply system is working, the fuel in the fuel tanks on both sides is supplied to the central fuel tank through the fuel supply pipes and check valves, and finally the fuel is supplied to the engine on the UAV through the gravity suction nozzle of the fuel supply system connected to the fuel supply pipe at the bottom of the fuel tank.

[0035] When the drone enters a negative overload flight condition, the fuel will detach from the bottom of the fuel tank and rise to the surface. At this time, the gravity fuel suction nozzle will slide upward along the slide rail under the effect of gravity, ensuring that the head of the gravity fuel suction nozzle is not inside the fuel surface, thus realizing the fuel supply for the drone under negative overload conditions.

[0036] When the drone enters the inverted flight mode, the fuel tank will flip along with the drone. At this time, the fuel will fall onto the bottom surface of the fuel tank, and the gravity fuel suction nozzle will also slide along the rail to the bottom surface of the fuel tank, ensuring that the head of the gravity fuel suction nozzle is not inside the fuel surface, thus realizing the fuel supply for the drone in the inverted flight mode.

[0037] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A fuel supply device for unmanned aerial vehicles (UAVs) during overload flight, characterized in that, It includes an oil delivery system and an oil supply system. The oil delivery system includes an oil delivery pipe and a one-way valve (6). The oil supply system includes a slide rail (1) and a gravity suction nozzle (2). The slide rail (1) is installed inside the oil supply tank (8), the gravity suction nozzle (2) is sleeved on the slide rail (1), the one-way valve (6) is installed on the oil supply pipe on both sides of the oil supply tank (9), and the oil supply tank (9) on both sides supplies oil to the oil supply tank (8) through the oil supply pipe; When the UAV is performing negative overload flight or inverted flight, the gravity suction nozzle (2) slides up and down along the slide rail (1) with the oil surface in the fuel tank (8) under the effect of gravity. The gravity suction nozzle (2) is always kept submerged in the oil surface, ensuring that the fuel tank (8) continuously supplies fuel to the engine of the UAV. The gravity suction nozzle (2) is provided with an annular hole, and the gravity suction nozzle (2) is nested on the slide rail (1) through the annular hole and slides freely up and down; When the UAV is flying under negative overload conditions, the gravity suction nozzle (2) slides up and down along the slide rail (1) under the effect of gravity and is always within the oil surface, ensuring that the UAV supplies fuel to the engine without interruption when flying under negative overload conditions. When the UAV is in reverse flight mode, the fuel in the fuel tank (8) falls from the bottom surface of the fuel tank (8) to the top surface of the fuel tank (8), and the gravity suction nozzle (2) slides down the slide rail (1) to the top surface of the fuel tank (8) through the gravity effect and is always within the oil surface, ensuring that the fuel supply to the engine is uninterrupted when the UAV is in reverse flight.

2. The UAV overload flight fuel supply device according to claim 1, characterized in that, The oil supply tank (8) has a partition (7) bonded to both sides inside. The partition (7) has a flanged structure. The oil supply tank (8) is isolated from the oil transport tanks (9) on both sides by the partition (7).

3. The UAV overload flight fuel supply device according to claim 1, characterized in that, The oil supply tank (8) and the oil transfer tank (9) are connected to each other by the oil transfer pipe, which includes an oil transfer pipe one (3) and an oil transfer pipe two (4). The oil transfer tanks (9) on both sides transfer oil to the oil supply tank (8) through the oil transfer pipe one (3) and the oil transfer pipe two (4).

4. The UAV overload flight fuel supply device according to claim 1, characterized in that, The slide rail (1) adopts an upper and lower support structure, and the upper and lower ends of the slide rail (1) are respectively connected to the upper and lower bottom surfaces of the oil supply tank (8).

5. The UAV overload flight fuel supply device according to claim 1, characterized in that, The gravity suction nozzle (2) is provided with an oil supply hose at one end, and the oil supply pipe also includes an oil supply pipe three (5). The gravity suction nozzle (2) is connected to the oil supply pipe three (5) through the oil supply hose to supply oil to the engine on the UAV.

6. A drone, characterized in that, Includes the UAV overload flight fuel supply device according to any one of claims 1-5.

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