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CN-122009509-A - Unmanned aerial vehicle refueling system and refueling method

CN122009509ACN 122009509 ACN122009509 ACN 122009509ACN-122009509-A

Abstract

The invention belongs to the field of unmanned aerial vehicle refueling, and particularly relates to an unmanned aerial vehicle refueling system and a refueling method. In order to reduce the occupied space of a refueling system and ensure uniform mixing of mixed fuel, the invention provides an unmanned aerial vehicle refueling system which comprises a lubricating oil container, a refueling docking mechanism and an aviation kerosene container communicated with the refueling docking mechanism through a main pipeline, wherein a metering pumping mechanism is arranged on the main pipeline, the lubricating oil container is positioned above the main pipeline and is communicated with the main pipeline through a secondary pipeline, a flow valve is arranged on the secondary pipeline, the communication position of the secondary pipeline and the main pipeline is positioned at the downstream of the metering pumping mechanism, and a pipeline stirrer is arranged on the part of the main pipeline, which is positioned between the communication position of the secondary pipeline and the main pipeline and between the refueling docking mechanism. The invention further provides an unmanned aerial vehicle refueling method correspondingly. In the invention, gravity and the kinetic energy of oil are reasonably utilized, so that only one metering pumping mechanism is utilized for oiling, the occupied space is reduced, the oil is mixed twice, and the uniform mixing is ensured.

Inventors

  • LIU JUN
  • Tan Miaolong
  • ZHANG YUCHAO
  • WANG QIANXIANG

Assignees

  • 中国船舶集团有限公司第七一三研究所

Dates

Publication Date
20260512
Application Date
20260316

Claims (10)

  1. 1. The unmanned aerial vehicle refueling system comprises a lubricating oil container and a refueling docking mechanism used for being matched with the unmanned aerial vehicle fuel tank to refuel the unmanned aerial vehicle, and is characterized by also comprising a control module and an aviation kerosene container or a gasoline container which are communicated with the refueling docking mechanism through a main pipeline; the main pipeline is provided with a metering pumping mechanism for metering and pumping aviation kerosene or gasoline, the lubricating oil container is positioned above the main pipeline and is communicated with the main pipeline through an auxiliary pipeline so as to realize discharging of lubricating oil by utilizing gravity, and the auxiliary pipeline is provided with a flow valve; The part of the main pipeline, which is positioned between the auxiliary pipeline and the main pipeline and between the main pipeline and the oiling butt joint mechanism, is provided with a pipeline stirrer; The control module is used for controlling the metering pumping mechanism, the flow valve and the pipeline stirrer.
  2. 2. The unmanned aerial vehicle fueling system of claim 1 wherein the outlet of the secondary line is inserted into the primary line.
  3. 3. The unmanned aerial vehicle fueling system of claim 2 wherein the outlet of the secondary line is centrally located within the primary line internal flow path.
  4. 4. A unmanned aerial vehicle fueling system as claimed in any of claims 1 to 3 wherein the fueling docking mechanism comprises a docking device for docking with the unmanned aerial vehicle sump and a drive device for driving the docking device towards or away from the unmanned aerial vehicle sump, the control module being for controlling the drive device.
  5. 5. The unmanned aerial vehicle fueling system of claim 4 wherein the docking device comprises a fueling nozzle having a one-way valve.
  6. 6. The unmanned aerial vehicle fueling system of any of claims 1-3 wherein the main conduit is located above an aviation kerosene or gasoline container.
  7. 7. A fuel filling system for unmanned aerial vehicle as claimed in any one of claims 1 to 3, wherein the aviation kerosene container or petrol container is arranged below the unmanned aerial vehicle parking position and the lubricating oil container is arranged above the unmanned aerial vehicle parking position.
  8. 8. A unmanned aerial vehicle fueling system as set forth in any of claims 1-3 wherein the metering pumping mechanism comprises a metering pump.
  9. 9. An unmanned aerial vehicle refueling method, which is characterized in that the unmanned aerial vehicle refueling system according to any one of claims 1-3 is adopted for refueling according to the following steps: step S1, connecting a refueling docking mechanism with an oil tank of an unmanned aerial vehicle; S2, starting a metering pumping mechanism, starting a flow valve, starting a pipeline stirrer so as to mix aviation kerosene or gasoline and lubricating oil in a main pipeline for the first time according to a proportion, and secondarily mixing the mixed fuel oil entering the pipeline stirrer, so that the secondarily mixed fuel oil finally enters an unmanned aerial vehicle oil tank; and S3, after the oiling is finished, closing the metering pumping mechanism, the flow valve and the pipeline stirrer.
  10. 10. The unmanned aerial vehicle fueling method of claim 9, wherein the fueling docking mechanism comprises a docking device for docking with the unmanned aerial vehicle tank and a driving device for driving the docking device toward or away from the unmanned aerial vehicle tank, the control module for controlling the driving device; in step S1, the driving device drives the plugging device to be close to the unmanned aerial vehicle oil tank so as to be plugged with the unmanned aerial vehicle oil tank; In step S3, the drive drives the plug device away from the unmanned aerial vehicle sump to separate the plug device from the unmanned aerial vehicle sump.

Description

Unmanned aerial vehicle refueling system and refueling method Technical Field The invention belongs to the field of unmanned aerial vehicle refueling, and particularly relates to an unmanned aerial vehicle refueling system and a refueling method. Background At present, in order to prolong the endurance of the unmanned aerial vehicle, the field often uses electric power and fuel mixed driving or pure fuel driving to replace pure electric driving. The fuel oil for the unmanned aerial vehicle is mixed fuel oil of aviation kerosene and lubricating oil (also called engine oil), the aviation kerosene and the lubricating oil need to be quantitatively and proportionally filled, and the ratio of the aviation kerosene to the lubricating oil is generally 40:1-50:1. Therefore, manual oiling is often required during actual operation. Specifically, during oiling, a worker needs to weigh aviation kerosene and lubricating oil in corresponding volumes, place the aviation kerosene and the lubricating oil in a stirring container, stir the aviation kerosene and the lubricating oil uniformly, and finally add the mixed fuel into an unmanned plane fuel tank before layering the aviation kerosene and the lubricating oil. The efficiency of pure manual fueling is low, therefore, an unmanned aerial vehicle fueling system capable of realizing automatic fueling appears in the prior art. The Chinese patent with the authority notice number of CN204368444U and the authority notice day of 2015.06.03 discloses an unmanned aerial vehicle automatic mixing oiling system and an oiling device thereof, as shown in figure 1, the oiling system comprises a control module, a gasoline tank, an engine oil tank, a mixed oil tank and an oiling gun (equivalent to an oiling butt joint mechanism), wherein the gasoline tank is connected with the mixed oil tank through a gasoline pipeline, the engine oil tank is connected with the mixed oil tank through an engine oil pipeline, the mixed oil tank is connected with the oiling gun through a mixed fuel oil pipeline, and each pipeline is provided with a corresponding oil pump, a valve and a flow sensor. When the aircraft is refueled, the refueler is manually inserted into the aircraft fuel tank, the control module controls the corresponding oil pump to be opened, gasoline and engine oil are pumped into the mixed fuel tank in proportion and mixed into mixed fuel in the mixed fuel tank, and finally, the control module controls the oil pump on the mixed fuel pipeline to be opened, and the mixed fuel is pumped into the refueler to refuel the aircraft. On the basis of the technical scheme, the unmanned aerial vehicle can automatically refuel by replacing the gasoline tank with the aviation kerosene tank, but the following defects are also present: (1) The quantity of the oil pumps is too large, so that the whole set of oiling system is too large in volume, and when the space in the unmanned aerial vehicle hangar is fixed, the quantity of the oiling systems capable of being arranged is too small, so that the oiling requirement of a large number of unmanned aerial vehicles in the clustered unmanned aerial vehicle hangar cannot be met. (2) The gasoline and the engine oil are only mixed once after being pumped into the mixing oil tank, so that the mixing times are less, insufficient mixing is caused, and the service life of the unmanned aerial vehicle is influenced. (3) When the time interval between two refuelling is longer, the mixed fuel in the mixed oil tank can be layered, and the lower floor is aviation kerosene, and the upper strata is engine oil, leads to the oil that adds for unmanned aerial vehicle not to be mixed fuel, influences unmanned aerial vehicle's life. Therefore, an unmanned aerial vehicle oiling system capable of ensuring that aviation kerosene and lubricating oil are added into an unmanned aerial vehicle oil tank in proportion is urgently needed at present. Disclosure of Invention The invention aims to provide an unmanned aerial vehicle oiling system, which aims to solve the technical problems that the existing oiling system occupies a large space and aviation kerosene or gasoline and lubricating oil are not sufficiently mixed. The invention further aims to provide an unmanned aerial vehicle oiling method to solve the technical problem that aviation kerosene or gasoline and lubricating oil are not sufficiently mixed. In order to achieve the above purpose, the technical scheme of the unmanned aerial vehicle refueling system provided by the invention is as follows: The unmanned aerial vehicle refueling system comprises a lubricating oil container, a refueling docking mechanism, a control module and an aviation kerosene container or a gasoline container, wherein the refueling docking mechanism is used for being matched with a unmanned aerial vehicle fuel tank to refuel the unmanned aerial vehicle; the main pipeline is provided with a metering pumping mechanism for metering and pumping aviation kerosene or