Fuel oil filling device for unmanned aerial vehicle

Abstract

An unmanned aerial vehicle fuel oil filling device comprises a cabin assembly, an oil storage tank assembly, an oil pumping system, a control system and an instrument assembly are arranged in the cabin assembly, the oil storage tank assembly is installed on the rear side in the cabin assembly, the oil pumping system is installed on the front side in the cabin assembly, the oil storage tank assembly comprises an oil storage tank, and the oil storage tank is installed on the cabin assembly. The upper end face of the oil storage tank is provided with an oil filling port, an oil outlet and a vacuum pump suction flange, the side face of the oil storage tank is provided with a vacuum suction port, the oil pumping system comprises an oil filling hose reel arranged at the bottom of the cabin assembly, a filter separator is arranged above the hose reel, and a sliding vane pump unit and a vacuum pump are arranged above the filter separator. The oil storage tank assembly is connected with the oil pumping system through a pipeline between a vacuum pump and a vacuum pump suction flange, the pipeline is provided with a plurality of valves for controlling the on-off of the pipeline, the instrument assembly is arranged in front of the oil pumping system, and the control system is arranged on the inner wall of a cabin door of the cabin assembly.

Description

Technical Field

[0001] The utility model relates to the field of fuel storage and transportation for unmanned aerial vehicles (UAVs), and in particular to a fuel filling device for UAVs. Background Art

[0002] Large drones primarily use gasoline as fuel. Currently, fuel refueling is done with fuel tankers. However, these vehicles are bulky and cumbersome to operate. If a tanker fails during operation, the drone will be unable to refuel. Therefore, a device that can be installed on a large drone storage, transport, and launch vehicle to facilitate fuel refueling is needed.

[0003] Patent publication CN116177478A discloses a small refueling device that can be used to refuel drones. However, this device uses a pump to pump oil from the fuel tank to drain excess fuel, which has the following drawbacks:

[0004] 1. During the oil pumping process, the air in the fuel tank will be pumped out along with the fuel. This part of the air will be pumped into the oil pump and cause the oil pump to be unstable.

[0005] 2. Since large UAV fuel tanks usually use soft boxes, it is easy to cause the upper and lower boxes to be adsorbed together to form a fault due to atmospheric pressure operation after the oil at the inlet is pumped out during the oil pumping process, which seriously affects the oil pumping efficiency.

[0006] Therefore, there is an urgent need for a filling device that can be installed on a large-scale UAV storage and transportation launch vehicle and can stably discharge the remaining oil in the large-scale UAV tank. Summary of the Invention

[0007] The purpose of the utility model is to address the corresponding deficiencies of the existing technology and provide a UAV fuel filling device. The UAV fuel filling device can be installed on a UAV storage and launch vehicle and can stably discharge fuel from the UAV fuel tank.

[0008] The purpose of the utility model is to be achieved by adopting the following scheme: a fuel filling device for an unmanned aerial vehicle, comprising a cabin assembly, wherein an oil tank assembly, an oil pumping system, a control system and an instrument assembly are arranged in the cabin assembly, wherein the oil tank assembly is installed at the rear side of the cabin assembly, wherein the oil pumping system is installed at the front side of the cabin assembly, wherein the oil tank assembly comprises an oil tank, wherein an oil filling port, an oil outlet port and a vacuum pump suction flange are arranged on the upper end face of the oil tank, a vacuum suction port is arranged on the side face of the oil tank, a cleaning port and a sedimentation port are arranged on the lower end face of the oil tank, wherein the oil pumping system comprises an oil tank arranged at the upper end face of the cabin assembly, wherein the oil tank assembly comprises an oil tank ... A refueling hose reel is provided at the bottom, a filter separator is provided above the hose reel, a vane pump unit and a vacuum pump are provided above the filter separator, the filter separator, the vane pump unit and the vacuum pump are connected by pipelines, the oil storage tank assembly and the oil pumping system are connected by pipelines between the vacuum pump and the vacuum pump suction flange, a plurality of valves for controlling the on-off of the pipeline are provided on the pipeline, the instrument assembly is provided in front of the oil pumping system, and the control system is provided on the inner wall of the cabin door of the cabin assembly. During operation, the cabin door is opened to operate the control system to refuel the UAV.

[0009] An electronic liquid level gauge is provided on the upper end surface of the oil storage tank.

[0010] A flow meter is respectively provided on the left and right sides of the filter separator.

[0011] The instrument assembly includes a pressure gauge, a vacuum gauge, a differential pressure gauge and a direct-reading liquid level gauge.

[0012] The cabin assembly includes a cabin frame and a bulkhead and a cabin door arranged on the outside of the cabin frame. A fan and an air duct for blowing out the fuel vapor are arranged on the upper end of the left bulkhead. A staircase for people to go up and down is arranged on the right bulkhead. A safety valve and an oil inlet of the oil tank are arranged on the top bulkhead. The lower end of the cabin assembly is fixed to the UAV storage and launch vehicle by bolts.

[0013] The sedimentation port at the lower end of the oil storage tank is connected to a sedimentation pipe.

[0014] The cabin frame of the cabin assembly is made of carbon steel profiles, and the pipeline is made of rust-proof aluminum alloy.

[0015] The advantage of the present invention is that the fuel filling device for UAVs adopts a square cabin structure and can be fixed to a large UAV launch vehicle by fastening bolts installed at the four corners, serving as a large UAV fuel filling module. It can also be placed on the ground as an independent fuel filling device.

[0016] After design and process adjustments, the oil storage tank, mixing tank, and vacuum tank are integrated into a single tank, which not only saves space but also reduces product failure rate;

[0017] During the operation of the fuel filling device, a large amount of gasoline vapor is generated inside the container-type fuel filling device due to gasoline volatilization and the vacuum oil drainage process. When the gasoline vapor reaches a certain concentration, it will pose a safety hazard. The fan and air duct installed on the left side of the cabin assembly can exhaust the vapor from the interior of the fuel filling device, reducing the accumulation of gasoline vapor inside the fuel filling device.

[0018] In the fuel filling device, the vacuum pump is connected to the oil storage tank, and "cavitation" will not occur during the oil pumping process. The fuel tank of the large UAV will not cause the upper and lower boxes to be adsorbed together to form a fault due to atmospheric pressure operation, thereby improving the oil pumping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 Schematic diagram of the oil storage tank assembly structure;

[0021] Figure 3 This is a schematic diagram of the oil pump system structure;

[0022] Figure 4 This is a side view of the utility model;

[0023] Figure 5 This is the front view of the utility model;

[0024] Figure 6 This is a top view of the utility model;

[0025] Figure 7 This is the operation flow chart of the utility model. DETAILED DESCRIPTION

[0026] like Figures 1 to 6As shown, a fuel filling device for an unmanned aerial vehicle includes a cabin assembly 2, in which an oil tank assembly 5, an oil pumping system 3, a control system 1 and an instrument assembly 4 are arranged. The oil tank assembly 5 is installed on the rear side of the cabin assembly 2, and the oil pumping system 3 is installed on the front side of the cabin assembly 2. The oil tank assembly 5 includes an oil tank 5-1, and a refueling port 5-4, an oil outlet 5-3 and a vacuum pump suction flange 5-5 are arranged on the upper end surface of the oil tank 5-1. A vacuum suction port 5-6 is arranged on the side of the oil tank 5-1, and a cleaning port 5-7 and a sedimentation port 5-8 are arranged on the lower end surface of the oil tank 5-1. The sedimentation port 5-8 at the lower end of the oil tank 5-1 is connected to a sinking tube 5-9, and an electronic liquid level gauge 5-2 is arranged on the upper end surface of the oil tank 5-1. The oil pumping system 3 includes a refueling hose reel 3-4 located at the bottom of the cabin assembly 2. A filter separator 3-3 is located above the hose reel 3-4, with a flow meter 3-2 located on either side of the filter separator 3-3. A vane pump unit 3-1 and a vacuum pump 3-7 are located above the filter separator 3-3. The filter separator 3-3, vane pump unit 3-1, and vacuum pump 3-7 are connected via a pipeline 3-6. The oil storage tank assembly 5 is connected to the oil pumping system 3 via a pipeline 3-6 between the vacuum pump 3-7 and the vacuum pump's suction flange 5-5. Multiple valves are located on the pipeline 3-6 to control the flow of fuel. The instrument assembly 4 is located in front of the oil pumping system 3 and includes a pressure gauge, a vacuum gauge, a differential pressure gauge, and a direct-reading liquid level gauge. The control system 1 is located on the inner wall of the cabin door of the cabin assembly 2. During operation, the cabin door is opened to operate the control system 1 to refuel the drone. The cabin assembly 2 comprises a cabin frame, a bulkhead, and a cabin door mounted outside the frame. A fan 6 and air duct for blowing out fuel vapor are located at the top of the left bulkhead. A staircase 8 is located on the right bulkhead for personnel to ascend and descend. A safety valve 7 and a fuel tank inlet 9 are located on the top bulkhead. The lower end of the cabin assembly 2 is bolted to the UAV storage and launch vehicle. The cabin frame is constructed from carbon steel, and the pipes 5 and 6 are constructed from a rust-resistant aluminum alloy.

[0027] like Figure 7 The figure shows the working process of the fuel filling device, Table 1 is a schematic diagram of each component, and Table 2 is an operation table of the working process of the fuel filling device.

[0028]

[0029] Table 1

[0030] Workflow Open the valve Tank filling / lubricant filling Valve 1, Valve 2, Valve 3 No. 1 gun pumping oil Valve 8, Valve 14 No. 2 gun oil extraction Valve 8, Valve 15 No. 1 gun oil filling Valve 3, Valve 4, Valve 7, Valve 12, Valve 16 No. 2 gun oil filling Valve 3, Valve 4, Valve 7, Valve 13, Valve 17 Refueling of gun No. 1 Valve 3, Valve 7, Valve 12, Valve 16 Refueling of gun No. 2 Valve 3, Valve 7, Valve 13, Valve 17 No. 1 gun sucks oil Valve 8, Valve 16 No. 2 gun oil suction Valve 8, Valve 17 J3 tanker Valve 6

[0031] Table 2

[0032] Description of the operation process:

[0033] Tank filling / lubricant filling

[0034] External oil filling → valve 1 → oil tank

[0035] No. 1 gun pumping oil

[0036] UAV oil tank → No. 1 oil gun and hose → Valve 14 → Filter → Flow meter → Valve 8 → Oil storage tank → Vacuum pump

[0037] No. 2 gun oil extraction

[0038] UAV oil tank → No. 2 oil gun and hose → valve 15 → filter → flow meter → valve 8 → oil storage tank

[0039] No. 1 gun oil filling

[0040] Oil storage tank → valve 7 → oil pump → oil-water separator → valve 12 → filter → flow meter → valve 16 → No. 1 oil gun and hose → valve 4 → oil storage tank

[0041] No. 2 gun oil filling

[0042] Oil storage tank → valve 7 → oil pump → oil-water separator → valve 13 → filter → flow meter → valve 17 → No. 2 oil gun and hose → valve 4 → oil storage tank

[0043] Refueling of gun No. 1

[0044] Oil storage tank → valve 7 → oil pump → oil-water separator → valve 12 → filter → flow meter → valve 16 → No. 1 oil gun and hose → UAV oil tank

[0045] Refueling of gun No. 2

[0046] Oil storage tank → Valve 7 → Oil pump → Oil-water separator → Valve 13 → Filter → Flow meter → Valve 17 → No. 2 oil gun and hose → UAV oil tank

[0047] 8.1 oil suction gun

[0048] External fuel → No. 1 oil gun and hose → valve 16 → valve 8 → oil storage tank → vacuum pump

[0049] 9.2 No. gun oil suction

[0050] External fuel → No. 2 oil gun and hose → valve 17 → valve 8 → oil storage tank → vacuum pump

[0051] 10.J3 tanker

[0052] Oil storage tank → Valve 6 → J3 refueling machine → UAV oil tank

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A fuel filling device for an unmanned aerial vehicle, comprising a cabin assembly (2), wherein an oil storage tank assembly (5), an oil pumping system (3), a control system (1) and an instrument assembly (4) are arranged in the cabin assembly (2), characterized in that: The oil storage tank assembly (5) is installed on the rear side of the cabin assembly (2), and the oil pumping system (3) is installed on the front side of the cabin assembly (2). The oil storage tank assembly (5) includes an oil storage tank (5-1), an oil filling port (5-4), an oil outlet (5-3) and a vacuum pump suction flange (5-5) are provided on the upper end surface of the oil storage tank (5-1), a vacuum suction port (5-6) is provided on the side of the oil storage tank (5-1), and a cleaning port (5-7) and a sedimentation port (5-8) are provided on the lower end surface of the oil storage tank (5-1). The oil pumping system (3) includes a refueling hose reel (3-4) provided at the bottom of the cabin assembly (2), a filter separator (3-3) is provided above the hose reel (3-4), and the filter A vane pump unit (3-1) and a vacuum pump (3-7) are arranged above the separator (3-3). The filter separator (3-3), the vane pump unit (3-1) and the vacuum pump (3-7) are connected via a pipeline (3-6). The oil storage tank assembly (5) is connected to the oil pumping system (3) via a pipeline (3-6) between the vacuum pump (3-7) and the vacuum pump suction flange (5-5). A plurality of valves for controlling the on-off of the pipeline are arranged on the pipeline (3-6). The instrument assembly (4) is arranged in front of the oil pumping system (3). The control system (1) is arranged on the inner wall of the cabin door of the cabin assembly (2). During operation, the cabin door is opened to operate the control system (1) to refuel the UAV.

2. The UAV fuel filling device according to claim 1, characterized in that: An electronic liquid level gauge (5-2) is provided on the upper end surface of the oil storage tank (5-1).

3. The UAV fuel filling device according to claim 1, characterized in that: A flow meter (3-2) is respectively provided on the left and right sides of the filter separator (3-3).

4. The UAV fuel filling device according to claim 1, characterized in that: The instrument assembly (4) includes a pressure gauge, a vacuum gauge, a differential pressure gauge, and a direct-reading liquid level gauge.

5. The UAV fuel filling device according to claim 1, characterized in that: The cabin assembly (2) includes a cabin frame, a bulkhead and a cabin door arranged on the outside of the cabin frame, a fan (6) and an air duct for blowing out fuel vapor are arranged on the upper end of the left bulkhead, a staircase (8) for people to go up and down is arranged on the right bulkhead, a safety valve (7) and an oil tank inlet (9) are arranged on the top bulkhead, and the lower end of the cabin assembly (2) is fixed to the UAV storage and launch vehicle by bolts.

6. The UAV fuel filling device according to claim 1, characterized in that: The sedimentation port (5-8) at the lower end of the oil storage tank (5-1) is connected to a sedimentation pipe (5-9).

7. The UAV fuel filling device according to claim 1, characterized in that: The cabin frame of the cabin assembly (2) is made of carbon steel profiles, and the pipelines (5-6) are made of rust-proof aluminum alloy.

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