A mobile unmanned aerial vehicle liquid hydrogen filling equipment

Abstract

The present invention relates to the technical field of hydrogenation equipment for unmanned aerial vehicles, and discloses a mobile unmanned aerial vehicle liquid hydrogen filling equipment, including a hydrogen filling box, a sealing cover fixedly connected to the top of the hydrogen filling box, a bottom plate fixedly connected to the bottom of the hydrogen filling box, a compression tube fixedly connected to the surface of the hydrogen filling box, an end of the compression tube away from the hydrogen filling box is fixedly connected to the top of the bottom plate, an end of the compression tube away from the hydrogen filling box passes through the surface of the bottom plate, a support frame fixedly connected to the bottom of the bottom plate, an end of the compression tube away from the hydrogen filling box is fixedly connected to a liquid outlet pipe, and also includes: a telescopic component, including a telescopic column fixedly connected to the bottom of the inner wall of the hydrogen filling box, and a compression disk slidably connected to the surface of the telescopic column. By providing the telescopic component, a large amount of liquid hydrogen will be absorbed into the interior of the compression disk through the top absorption bag of the digging rod. By providing this component, it is avoided that when the pressure in the atmosphere increases, the discharge speed of liquid hydrogen in the storage tank decreases, thereby affecting the fuel addition efficiency of the unmanned aerial vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle hydrogen filling equipment, and in particular to a mobile unmanned aerial vehicle liquid hydrogen filling equipment. Background Art

[0002] Drones are widely used in forest inspections, power grid maintenance and other occasions. Because they can fly in the air, they have the advantages of strong maneuverability and accurate data collection. They can greatly reduce the high labor intensity and high risks of traditional manual operations. Traditional drones often use gasoline engines or diesel engines as their power source, which have the disadvantages of high noise and air pollution during operation. Drones equipped with hydrogen power systems have the advantages of no pollution, low noise and high efficiency, and can be used as a power source for drones.

[0003] The patent application with application number CN202222778735.X discloses a mobile UAV liquid hydrogen filling equipment, including a UAV fuselage hydrogen filling component, a hydrogen filling port is arranged on the UAV fuselage, a fuselage electrostatic release ring is arranged on one side of the hydrogen filling port, a fuselage magnetic part I is arranged on the hydrogen filling port, a fuselage magnetic part II is arranged on the fuselage electrostatic release ring, the hydrogen filling port leads to a hydrogen storage device; and a hydrogen filling component of a ground hydrogen filling equipment, a hydrogen filling gun electrostatic release ring is arranged on one side of the hydrogen filling gun.

[0004] However, this patent also has the following shortcomings. When a small liquid hydrogen UAV starts to fly, liquid hydrogen is injected into the vaporizer through the liquid hydrogen storage tank, and the liquid hydrogen is converted into gaseous hydrogen through the vaporizer and supplied to the fuel cell. When the UAV is traveling to high altitude for operation, the UAV body is prone to swing due to air turbulence. At this time, the air pressure in the high altitude will be significantly reduced, resulting in a decrease in the pressure difference between the pressure in the liquid hydrogen storage tank and the external environment, thereby reducing the flow rate of liquid hydrogen flowing into the vaporizer, reducing the conversion efficiency of the vaporizer from liquid hydrogen to gaseous hydrogen, and ultimately failing to guarantee a stable fuel supply to the UAV. In response to this situation, a mobile UAV liquid hydrogen filling device is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a mobile unmanned aerial vehicle liquid hydrogen filling device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a mobile unmanned aerial vehicle liquid hydrogen filling equipment, comprising a hydrogen filling box, the top of the hydrogen filling box is fixedly connected with a sealing cover, the bottom of the hydrogen filling box is fixedly connected with a bottom plate, the surface of the hydrogen filling box is fixedly connected with a compression tube, one end of the compression tube away from the hydrogen filling box is fixedly connected to the top of the bottom plate, one end of the compression tube away from the hydrogen filling box passes through the surface of the bottom plate, the bottom of the bottom plate is fixedly connected with a support frame, one end of the compression tube away from the hydrogen filling box is fixedly connected with a liquid outlet pipe, compression mechanisms are arranged on both sides of the hydrogen filling box, and also includes:

[0007] The telescopic assembly comprises a telescopic column fixedly connected to the bottom of the inner wall of the hydrogen injection box, a compression disk being slidably connected to the surface of the telescopic column, a connecting mechanism being provided at the bottom of the compression disk, a suction disk being fixedly connected to the top of the telescopic column, a compression chamber being fixedly connected to the top of the compression disk, a telescopic tube being fixedly connected to the bottom of the inner wall of the compression chamber, an end of the telescopic tube away from the compression chamber being fixedly connected to the bottom of the suction disk, a covering block being fixedly connected to the bottom of the inner wall of the compression disk, a material digging rod being slidably connected to both sides of the inner wall of the covering block via sliders, a material sticking ring being fixedly connected to both sides of the covering block, and liquid hydrogen inside the compression disk is compressed into the interior of the suction disk through the telescopic tube.

[0008] According to the above technical solution, the compression mechanism includes a fan-shaped plate, the bottom of the inner wall of the fan-shaped plate is fixedly connected to a pushing tube, the surface of the fan-shaped plate is fixedly connected to a corner block, the surface of the corner block is fixedly connected to a connecting rod, the surface of the connecting rod is rotatably connected to a pushing block, and a heating component is provided at one end of the connecting rod away from the corner block. A large amount of heat will flow out through the slot of the flow block to heat the surrounding area of ​​the pushing block.

[0009] According to the above technical solution, the connecting mechanism includes a mounting block, and the inner walls of the mounting block are slidably connected to telescopic frames on both sides through sliders, the bottom of the inner wall of the telescopic frame is fixedly connected to a material receiving ring, one side of the inner wall of the telescopic frame is fixedly connected to a material pushing ring, the pushing ring is arranged at the bottom of the material receiving ring, the bottom of the telescopic frame is fixedly connected to a material receiving cavity, the bottom of the material receiving cavity is provided with an absorption component, and the material receiving cavity will also telescope toward the top due to the pulling of the telescopic frame.

[0010] According to the above technical solution, the heating component includes a placing plate, the placing plate is fixedly connected to one end of the connecting rod, a stretching ring is fixedly connected to the surface of the placing plate, the stretching ring is fixedly connected to a covering ring at one end away from the placing plate, a flow block is fixedly connected to the inner wall of the covering ring, a stretching rod is fixedly connected to the right side of the placing plate, an air pressure column is slidably connected to the inner wall of the stretching rod, an end of the stretching rod away from the placing plate is fixedly connected to a heating block, a surface of the heating block is fixedly connected to an air pressure plate, the inner wall of the air pressure plate is slidably connected to an air pressure frame via a slider, a pressing ring is fixedly connected to the surface of the air pressure frame, an end of the pressing ring away from the air pressure frame is fixedly connected to one side of the inner wall of the air pressure plate, and the air pressure column is driven to slide on the inner wall of the stretching rod by air pressure.

[0011] According to the above technical solution, the absorption assembly includes a connecting frame, the connecting frame is fixedly connected to the bottom of the inner wall of the hydrogen injection box, the connecting frame is fixedly connected to the bottom of the material receiving chamber, compression rings are fixedly connected to both sides of the connecting frame, the end of the compression ring away from the connecting frame is fixedly connected to a folding ring, the folding ring contacts the bottom of the inner wall of the hydrogen injection box, the bottom of the inner wall of the connecting frame is fixedly connected to an absorption tube, the inner wall of the absorption tube is fixedly connected to a compression rope, the end of the compression rope away from the inner wall of the absorption tube is fixedly connected to a sticking plate, the inner wall of the sticking plate is fixedly connected to a suction chamber, and the suction chamber absorbs liquid hydrogen into the interior of the pushing ring through the absorption tube.

[0012] According to the above technical solution, the number of the folding rings is set to two, and the two folding rings are symmetrically installed at one end of the compression ring with the center line of the plate as the symmetry axis, and the folding ring is driven to swing inward by the compression ring that shrinks inward.

[0013] According to the above technical solution, the number of the telescopic tubes is set to two, and the two telescopic tubes are symmetrically installed on the inner wall of the compression chamber with the center line of the compression disk as the symmetry axis. The air pressure will drive the compression disk to slide toward the top on the surface of the telescopic rod, and the telescopic tubes will be squeezed during the sliding process.

[0014] According to the above technical solution, the number of the patch rings is set to two, and the two patch rings are symmetrically installed on both sides of the covering block with the center line of the covering block as the symmetry axis. The air pressure flows into the interior of the covering block to drive the patch rings on both sides to swing left and right.

[0015] Compared with the prior art, the present invention provides a mobile UAV liquid hydrogen filling device, which has the following beneficial effects:

[0016] 1. The present invention is provided with a compression mechanism, which transmits liquid hydrogen into the compression tube through the suction plate, and finally transmits the liquid hydrogen into the fuselage of the UAV through the liquid outlet pipe. By providing this mechanism, it can be avoided that when the UAV is working under high-altitude conditions, the air pressure in the air is reduced, which causes the liquid hydrogen to be unable to be quickly transmitted from the liquid hydrogen filling equipment into the interior of the UAV vaporizer, thereby improving the efficiency of the liquid hydrogen filling equipment in adding liquid hydrogen fuel to the UAV.

[0017] 2. The present invention is provided with a heating component, and finally a large amount of heat will flow out through the slots of the flow block to heat the surrounding area of ​​the push block, thereby preventing the cold air flow in the high altitude from causing the surface of the push block to freeze when the drone is flying at high altitude, and making it unable to rotate on the surface of the connecting rod, thereby affecting the speed at which the liquid hydrogen filling equipment adds liquid hydrogen fuel to the drone.

[0018] 3. The present invention is provided with a telescopic component, and the material removal rod extends outward from the inner wall of the covering block. A large amount of liquid hydrogen will be absorbed into the interior of the compression disk through the absorption bag on the top of the material removal rod. By providing this component, the discharge speed of liquid hydrogen in the storage tank of the UAV can be increased under high-altitude conditions, so as to avoid the discharge speed of liquid hydrogen in the storage tank being reduced when the air pressure in the atmosphere is reduced, thereby affecting the fuel addition efficiency of the UAV.

[0019] 4. The present invention is provided with a connecting mechanism, and the inner wall of the receiving ring squeezes the surface of the pushing ring, so that the liquid hydrogen inside the pushing ring enters the interior of the receiving ring through the slot hole on the top of the pushing ring, and the liquid hydrogen is introduced into the interior of the compression disk through the receiving ring. By providing this mechanism, it is prevented that when the UAV is traveling at a high altitude, the liquid hydrogen precipitated at the bottom of the hydrogen injection tank is difficult to flow to the top, and finally the liquid hydrogen precipitated at the bottom of the hydrogen injection tank cannot be smoothly introduced into the interior of the UAV vaporizer through the liquid hydrogen filling equipment, which finally affects the continuous and stable fuel supply to the UAV. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the hydrogen injection box of the present invention;

[0023] Figure 3 is a schematic cross-sectional structural diagram of the telescopic assembly of the present invention;

[0024] Figure 4 It is a front view structural schematic diagram of the connection mechanism of the present invention;

[0025] Figure 5 is a front view structural schematic diagram of the absorption assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the top view of the compression mechanism of the present invention;

[0027] Figure 7 It is a front view structural schematic diagram of the heating component of the present invention.

[0028] In the figure: 1, hydrogen injection box; 2, compression tube; 3, bottom plate; 4, support frame; 5, sealing cover; 6, liquid outlet pipe; 7, compression mechanism; 701, fan plate; 702, push tube; 703, corner block; 704, connecting rod; 705, push block; 706, heating assembly; 7061, air pressure plate; 7062, air pressure frame; 7063, pressing ring; 7064, heating block; 7065, stretching rod; 7066, air pressure column; 7067, placement plate; 7068, stretching ring; 7069, covering ring; 7070, flow block; 8, stretching Shrinkage assembly; 801, telescopic column; 802, suction plate; 803, compression plate; 804, telescopic tube; 805, compression chamber; 806, covering block; 807, material pasting ring; 808, material digging rod; 9, connecting mechanism; 901, mounting block; 902, material receiving ring; 903, material pushing ring; 904, material receiving chamber; 905, telescopic frame; 906, absorption assembly; 9061, connecting frame; 9062, absorption tube; 9063, compression rope; 9064, pasting plate; 9065, suction chamber; 9066, compression ring; 9067, folding ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] For example, see Figure 1-Figure 3 The present invention provides a technical solution: a mobile unmanned aerial vehicle liquid hydrogen filling equipment, including a hydrogen filling box 1, a sealing cover 5 is fixedly connected to the top of the hydrogen filling box 1, a bottom plate 3 is fixedly connected to the bottom of the hydrogen filling box 1, a compression tube 2 is fixedly connected to the surface of the hydrogen filling box 1, one end of the compression tube 2 away from the hydrogen filling box 1 is fixedly connected to the top of the bottom plate 3, one end of the compression tube 2 away from the hydrogen filling box 1 passes through the surface of the bottom plate 3, a support frame 4 is fixedly connected to the bottom of the bottom plate 3, one end of the compression tube 2 away from the hydrogen filling box 1 is fixedly connected to a liquid outlet pipe 6, and compression mechanisms 7 are arranged on both sides of the hydrogen filling box 1, and also include:

[0031] The telescopic assembly 8 includes a telescopic column 801 fixedly connected to the bottom of the inner wall of the hydrogen injection box 1, a compression disk 803 is slidably connected to the surface of the telescopic column 801, a connecting mechanism 9 is provided at the bottom of the compression disk 803, a suction disk 802 is fixedly connected to the top of the telescopic column 801, a compression chamber 805 is fixedly connected to the top of the compression disk 803, a telescopic tube 804 is fixedly connected to the bottom of the inner wall of the compression chamber 805, an end of the telescopic tube 804 away from the compression chamber 805 is fixedly connected to the bottom of the suction disk 802, a coating block 806 is fixedly connected to the bottom of the inner wall of the compression disk 803, and the coating block 806 The inner wall of the material discharging rod 808 is slidably connected to the material discharging rod 808 on both sides through sliders, and an absorption bag is installed on the top of the material discharging rod 808. When the absorption bag extends from the inner wall of the coating block 806, it will be squeezed with the surface of the coating block 806, thereby generating negative pressure suction inside the material discharging rod 808 to absorb the liquid hydrogen with reduced flow rate inside the hydrogen injection box 1 into the compression disk 803. The coating block 806 is fixedly connected to the two sides with a material ring 807, and the surface of the material ring 807 is provided with a drainage groove. The swing of the material ring 807 allows the liquid hydrogen inside the hydrogen injection box 1 to be guided to the surface groove hole of the coating block 806 through the drainage groove.

[0032] The working mode of the first embodiment is as follows: when the compression disk 803 slides upward on the surface of the telescopic column 801, the telescopic tube 804 compresses the inner wall of the compression chamber 805 and generates air pressure to flow into the interior of the coating block 806, thereby causing the sticking rings 807 on both sides of the coating block 806 to swing left and right. During the swinging process, the liquid hydrogen inside the hydrogen injection box 1 is introduced into the surface grooves of the coating block 806 through the swinging of the sticking rings 807. At this time, the air pressure will push the digging rod 808 inside the coating block 806, so that the digging rod 808 extends outward from the inner wall of the coating block 806, and a large amount of liquid hydrogen will be absorbed into the interior of the compression disk 803 through the top absorption bag of the digging rod 808. By setting this component, when the UAV is working under high-altitude conditions, the discharge speed of liquid hydrogen in the storage tank can be increased to avoid the discharge speed of liquid hydrogen in the storage tank being reduced when the pressure in the atmosphere increases, thereby affecting the addition efficiency to the UAV fuel cell.

[0033] Example 2: Based on Example 1, continue to refer to Figure 4-Figure 5The connecting mechanism 9 includes a mounting block 901, and telescopic frames 905 are slidably connected to the inner walls of the mounting block 901 on both sides through sliders. A material receiving ring 902 is fixedly connected to the bottom of the inner wall of the telescopic frame 905, and a material pushing ring 903 is fixedly connected to one side of the inner wall of the telescopic frame 905. The pushing ring 903 has a cavity inside and has the characteristic of internal and external expansion and contraction. A slot is opened on the top of the pushing ring 903. When liquid hydrogen is injected into the cavity, it will expand and contract toward the top and be discharged into the interior of the material receiving ring 902 through the slot on the top. The pushing ring 903 is arranged at the bottom of the material receiving ring 902, and a material receiving cavity 904 is fixedly connected to the bottom of the telescopic frame 905. An absorption component 906 is arranged at the bottom of the material receiving cavity 904.

[0034] The absorption assembly 906 includes a connecting frame 9061, which is fixedly connected to the bottom of the inner wall of the hydrogen injection box 1, and the connecting frame 9061 is fixedly connected to the bottom of the material receiving chamber 904. Compression rings 9066 are fixedly connected to both sides of the connecting frame 9061, and one end of the compression ring 9066 away from the connecting frame 9061 is fixedly connected to a folding ring 9067, and the folding ring 9067 contacts the bottom of the inner wall of the hydrogen injection box 1. An absorption tube 9062 is fixedly connected to the bottom of the inner wall of the connecting frame 9061, and a compression rope 9063 is fixedly connected to the inner wall of the absorption tube 9062. The end of the compression rope 9063 away from the inner wall of the absorption tube 9062 is fixedly connected to a plate 9064, and the inner wall of the plate 9064 is fixedly connected to an absorption chamber 9065. An absorption hole is provided on the surface of the absorption chamber 9065. When the plate 9064 swings in the liquid hydrogen fuel, the liquid hydrogen is absorbed into the inside of the plate 9064 through the absorption hole.

[0035] Working method of the second embodiment: when the compression plate 803 slides upward on the surface of the telescopic column 801, the telescopic frame 905 will move toward the top due to the compression plate 803 sliding toward the top. When the telescopic frame 905 moves toward the top, the material receiving chamber 904 at the bottom will also be pulled toward the top by the telescopic frame 905. During the telescopic process, negative pressure suction will be generated inside. After this negative pressure suction flows into the two sides of the connecting frame 9061, it will drive the compression rings 9066 on both sides to shrink inward, and through the compression rings shrinking inward, 9066 drives the folding ring 9067 to swing inward, and the folding ring 9067 swinging on both sides moves the liquid hydrogen deposited at the bottom of the hydrogen injection tank 1 inward, so that the liquid hydrogen fuel at the bottom of the hydrogen injection tank 1 gathers at the bottom of the plate 9064. Because when the drone is affected by the cold air flow at high altitude, it will cause severe turbulence and affect the hydrogen injection tank 1 on the surface of the drone, causing the hydrogen injection tank 1 to tilt on the surface of the drone. When the inside of the hydrogen injection tank 1 tilts, the liquid hydrogen fuel inside it will also tilt, resulting in the compression disk being compressed at last. The absorption efficiency of the liquid hydrogen fuel absorbed by 803 is reduced, and when the surface of the hydrogen injection box 1 is tilted, the compression rope 9063 on the inner wall of the absorption tube 9062 will swing, and when swinging, it will contact the liquid hydrogen deposited at the bottom of the hydrogen injection box 1 through the sticking plate 9064, and the suction cavity 9065 absorbs the liquid hydrogen into the inside of the push ring 903 through the absorption tube 9062. When a certain amount of liquid hydrogen is injected into the push ring 903, it will stretch toward the top. When the push ring 903 stretches toward the top into the inner wall of the receiving ring 902, it will be sucked out through the receiving ring 9064. 02 squeezes the surface of the push ring 903, so that the liquid hydrogen inside the push ring 903 enters the interior of the receiving ring 902 through the slot on the top of the push ring 903, and introduces the liquid hydrogen into the interior of the compression disk 803 through the receiving ring 902, so as to avoid that when the UAV is flying to a high altitude and the air pressure in the air decreases, the liquid hydrogen precipitated at the bottom of the hydrogen injection tank 1 is difficult to flow to the top, and the liquid hydrogen precipitated at the bottom of the hydrogen injection tank 1 cannot be smoothly introduced into the vaporizer in the UAV through the liquid hydrogen filling equipment, which ultimately affects the continuous and stable fuel supply to the UAV.

[0036] Embodiment 3: The difference from Embodiment 1 is as follows: Figure 6-Figure 7 The compression mechanism 7 includes a fan-shaped plate 701, and a pushing tube 702 is fixedly connected to the bottom of the inner wall of the fan-shaped plate 701. Compressed gas is injected into the pushing tube 702. When subjected to external pressure, the pushing tube will expand and contract inward, and compress the compressed gas inside it and discharge it into the interior of the telescopic column 801. The surface of the fan-shaped plate 701 is fixedly connected to a corner block 703, and the surface of the corner block 703 is fixedly connected to a connecting rod 704. The surface of the connecting rod 704 is rotatably connected to a pushing block 705. The two ends of the pushing block 705 are semicircular. When pushed by the cold air flow, the rotation rate of the pushing block 705 will increase. A heating component 706 is provided at the end of the connecting rod 704 away from the corner block 703.

[0037] The working method of the third embodiment of the present invention is as follows: when the drone flies to a high altitude, the cold airflow in the high altitude will push the push block 705. The faster the airflow velocity in the high altitude, the stronger the rotation speed of the push block 705 on the surface of the connecting rod 704 will be, which will also cause the push block 705 to hit the surface of the push tube 702 at a higher rate. At the same time, the surface of the push tube 702 will continuously generate air pressure after being impacted by the push block 705, and will flow into the interior of the telescopic column 801 through the fan-shaped plate 701. The air pressure will drive the compression disk 803 to slide toward the top on the surface of the telescopic column 801, and will squeeze the telescopic tube 804 during the sliding process, causing the telescopic column 801 to be stretched. The contraction tube 804 expands and contracts inside the compression chamber 805. In the process of expansion and contraction of the contraction tube 804, negative pressure suction is generated, thereby compressing the liquid hydrogen inside the compression disk 803 into the inside of the suction disk 802 through the contraction tube 804, and the liquid hydrogen is transmitted into the compression tube 2 through the suction disk 802, and then transmitted into the vaporizer in the UAV through the liquid outlet pipe 6 and converted into gaseous hydrogen. This can prevent the air pressure from decreasing when the UAV is traveling at a high altitude, resulting in the inability to quickly transmit liquid hydrogen from the liquid hydrogen filling equipment into the UAV vaporizer. Finally, the efficiency of the liquid hydrogen filling equipment in adding liquid hydrogen fuel to the UAV vaporizer is improved.

[0038] Example 4: Based on Example 1, continue to refer to Figure 6-Figure 7 The heating component 706 includes a placement plate 7067, which is fixedly connected to one end of the connecting rod 704. A stretching ring 7068 is fixedly connected to the surface of the placement plate 7067. A covering ring 7069 is fixedly connected to the end of the stretching ring 7068 away from the placement plate 7067. A flow block 7070 is fixedly connected to the inner wall of the covering ring 7069. A stretching rod 7065 is fixedly connected to the right side of the placement plate 7067. A gas pressure column 7066 is slidably connected to the inner wall of the stretching rod 7065. A cavity is opened on the inner wall of the stretching rod 7065. When the inner wall of the gas pressure column 7066 slides in the cavity, it will squeeze the internal material of the stretching rod 7065. The end of the stretching rod 7065 away from the placement plate 7067 is fixedly connected to the heating block 7064, the surface of the heating block 7064 is fixedly connected to the air pressure plate 7061, the inner wall of the air pressure plate 7061 is slidably connected to the air pressure frame 7062 through a slider, the surface of the air pressure frame 7062 is fixedly connected to a pressing ring 7063, one end of the pressing ring 7063 is installed with an air bag, when squeezed by the air pressure frame 7062, one end of the pressing ring 7063 will extend into the inner wall of the air pressure plate 7061 to hit the internal switch of the heating block 7064, thereby causing the end of the pressing ring 7063 away from the air pressure frame 7062 to be fixedly connected to one side of the inner wall of the air pressure plate 7061.

[0039] The working method of the fourth embodiment is as follows: the hydrogen injection box 1 is installed on the fuselage surface of the drone through the support frame 4, and the liquid outlet pipe 6 is plugged and fixed to the inside of the drone carburetor. When the drone flies to a high altitude, the air pressure in the air decreases and causes the air pressure frame 7062 to slide on the inner wall of the air pressure plate 7061. During the sliding process, the pressing ring 7063 is squeezed so that one end of the pressing ring 7063 applies pressure to one side of the inner wall of the air pressure plate 7061 and generates air pressure. This pressure will drive the internal switch of the heating block 7064 to start heating. At the same time, the air pressure generated inside the air pressure plate 7061 will flow out from both ends of the heating block 7064 to the stretch rod 7065. The air pressure column 7066 is driven by air pressure to slide on the inner wall of the stretching rod 7065. During the sliding process, the heat transferred from the heating block 7064 to the inside of the stretching rod 7065 is compressed. After a large amount of heat is compressed into one piece, it will be transferred from the inside of the stretching ring 7068 to the covering ring 7069. Finally, a large amount of heat will flow out through the slots of the flow block 7070 to heat the surrounding area of ​​the pushing block 705, so as to prevent the cold air flow in the high altitude from causing the surface of the pushing block 705 to freeze when the drone is flying at high altitude, so that it cannot rotate on the surface of the connecting rod 704, thereby affecting the fuel adding speed of the liquid hydrogen filling equipment to the inside of the drone vaporizer.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mobile unmanned aerial vehicle liquid hydrogen filling equipment, comprising a hydrogen filling box (1), wherein a sealing cover (5) is fixedly connected to the top of the hydrogen filling box (1), a bottom plate (3) is fixedly connected to the bottom of the hydrogen filling box (1), a compression tube (2) is fixedly connected to the surface of the hydrogen filling box (1), an end of the compression tube (2) away from the hydrogen filling box (1) is fixedly connected to the top of the bottom plate (3), an end of the compression tube (2) away from the hydrogen filling box (1) passes through the surface of the bottom plate (3), a support frame (4) is fixedly connected to the bottom of the bottom plate (3), an end of the compression tube (2) away from the hydrogen filling box (1) is fixedly connected to a liquid outlet pipe (6), and compression mechanisms (7) are arranged on both sides of the hydrogen filling box (1), characterized in that: Also includes: The telescopic assembly (8) comprises a telescopic column (801) fixedly connected to the bottom of the inner wall of the hydrogen injection box (1); a compression disk (803) is slidably connected to the surface of the telescopic column (801); a connecting mechanism (9) is provided at the bottom of the compression disk (803); a suction disk (802) is fixedly connected to the top of the telescopic column (801); a compression chamber (805) is fixedly connected to the top of the compression disk (803); a telescopic tube (804) is fixedly connected to the bottom of the inner wall of the compression chamber (805); an end of the telescopic tube (804) away from the compression chamber (805) is fixedly connected to the bottom of the suction disk (802); a coating block (806) is fixedly connected to the bottom of the inner wall of the compression disk (803); a material removal rod (808) is slidably connected to both sides of the inner wall of the coating block (806) via sliders; and material sticking rings (807) are fixedly connected to both sides of the coating block (806); The compression mechanism (7) comprises a fan-shaped plate (701), the inner wall bottom of the fan-shaped plate (701) is fixedly connected to a pushing tube (702), the surface of the fan-shaped plate (701) is fixedly connected to a corner block (703), the surface of the corner block (703) is fixedly connected to a connecting rod (704), the surface of the connecting rod (704) is rotatably connected to a pushing block (705), and a heating component (706) is provided at one end of the connecting rod (704) away from the corner block (703); The connecting mechanism (9) comprises a mounting block (901), the inner walls of the mounting block (901) are slidably connected to telescopic frames (905) on both sides via sliders, the inner wall bottom of the telescopic frame (905) is fixedly connected to a material receiving ring (902), one side of the inner wall of the telescopic frame (905) is fixedly connected to a material pushing ring (903), the material pushing ring (903) is arranged at the bottom of the material receiving ring (902), the bottom of the telescopic frame (905) is fixedly connected to a material receiving chamber (904), and the bottom of the material receiving chamber (904) is provided with an absorption component (906); The heating assembly (706) comprises a placement plate (7067), wherein the placement plate (7067) is fixedly connected to one end of the connecting rod (704), a stretching ring (7068) is fixedly connected to the surface of the placement plate (7067), an end of the stretching ring (7068) away from the placement plate (7067) is fixedly connected to a covering ring (7069), an inner wall of the covering ring (7069) is fixedly connected to a flow block (7070), a stretching rod (7065) is fixedly connected to the right side of the placement plate (7067), and the inner wall of the stretching rod (7065) is fixedly connected to the inner wall of the stretching ring (7069). The wall is slidably connected to a pneumatic column (7066); one end of the stretching rod (7065) away from the placement plate (7067) is fixedly connected to a heating block (7064); the surface of the heating block (7064) is fixedly connected to a pneumatic plate (7061); the inner wall of the pneumatic plate (7061) is slidably connected to a pneumatic frame (7062) via a slider; the surface of the pneumatic frame (7062) is fixedly connected to a pressing ring (7063); and one end of the pressing ring (7063) away from the pneumatic frame (7062) is fixedly connected to one side of the inner wall of the pneumatic plate (7061); The absorption assembly (906) comprises a connecting frame (9061), the connecting frame (9061) is fixedly connected to the bottom of the inner wall of the hydrogen injection box (1), the connecting frame (9061) is fixedly connected to the bottom of the material receiving chamber (904), compression rings (9066) are fixedly connected to both sides of the connecting frame (9061), one end of the compression ring (9066) away from the connecting frame (9061) is fixedly connected to a folding ring (9067), the folding ring (9067) contacts the bottom of the inner wall of the hydrogen injection box (1), an absorption tube (9062) is fixedly connected to the bottom of the inner wall of the connecting frame (9061), a compression rope (9063) is fixedly connected to the inner wall of the absorption tube (9062), one end of the compression rope (9063) away from the inner wall of the absorption tube (9062) is fixedly connected to a sticking plate (9064), and the inner wall of the sticking plate (9064) is fixedly connected to the absorption chamber (9065); The number of the folding rings (9067) is set to two, and the two folding rings (9067) are symmetrically installed on one end of the compression ring (9066) with the center line of the connecting frame (9061) as the symmetry axis.

2. The mobile UAV liquid hydrogen filling equipment according to claim 1 is characterized by: The number of the telescopic tubes (804) is set to two, and the two telescopic tubes (804) are symmetrically installed on the inner wall of the compression chamber (805) with the center line of the compression disk (803) as the symmetry axis.

3. The mobile UAV liquid hydrogen filling equipment according to claim 1 is characterized in that: The number of the patch rings (807) is set to two, and the two patch rings (807) are symmetrically installed on both sides of the covering block (806) with the center line of the covering block (806) as the symmetry axis.

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