A UAV direct spray dry powder fire extinguishing device

Abstract

The invention provides a UAV direct-spray dry powder fire extinguishing device, comprising a first gas cylinder, a second gas cylinder, a third gas cylinder, and a glass breaker, wherein the glass breaker is arranged below an upper crossbeam of a frame; the first gas cylinder and the second gas cylinder are both arranged on a lower crossbeam of the frame, and the third gas cylinder is arranged in the middle above the first gas cylinder and the second gas cylinder; the UAV direct-spray dry powder fire extinguishing device has an effective working time of spraying agent increased to 20-30 seconds, a spraying distance of 20-30 meters, a service life of 10-15 years, an oil-electric hybrid flight endurance of 60 minutes, a fast emergency speed, a long spraying distance, a long spraying time, a long service life, a small size, a large amount of medicine, a light weight, a high efficiency, a simple structure, a low cost, and can control the fire source at the fastest speed to minimize the loss of life and property; the glass breaker warhead of the device breaks the glass after being fired and can be automatically retracted to avoid casualties of indoor personnel.

Description

Technical Field

[0001] The present invention belongs to the technical field of unmanned aerial vehicle direct-spray fire extinguishing, and in particular relates to an unmanned aerial vehicle direct-spray dry powder fire extinguishing device. Background Art

[0002] With the continuous innovation of science and technology development of my country's drone industry, it has also driven the development of other industries, solving the convenience brought by rapid aerial transportation, geological surveys, power maintenance, agricultural drug spraying, fire fighting, etc., using the metaphor of a spark can start a prairie fire as the advantage of drone fire fighting, which is fast emergency response speed, can quickly extinguish the fire source, and control the spread of fire. With the rapid development of high-rise buildings in my country from cities to counties, some of the densely populated residential and office buildings have narrow fire-fighting passages, and the height of fire ladder trucks is limited. Firefighters are needed to go deep into the fire scene to extinguish the fire. The strong airflow spreading in the fire scene and the generation of a large amount of smoke and harmful gases bring inconvenience to firefighters. The number of casualties and disabilities caused by fires is increasing every year, causing great losses to people's lives and property.

[0003] The existing unmanned aerial vehicle fire extinguishing devices sold on the market have shortcomings: the fire extinguishing device adopts the fire extinguishing cannon launch type, which is harmful to the human body; the water hose direct spray type is heavy and has a limited height; the dry powder direct spray type adopts an electronic valve, which seals the high-pressure gas for a short time of 1-2 years, and is prone to rust over a long time; the effective working time of the spray agent is 6-10 seconds, the effective working time of the spray agent is 6-10 seconds, the spray distance is 4-8 meters, the service life is 1-2 years, and the flight endurance is 15 minutes, which is not conducive to environmental protection. The two structural methods used by the glass breaker: gunpowder directly ignites and launches the warhead and the cannon-type direct launch breaks the glass and the warhead flies into the room, which is easy to cause casualties. Therefore, it is urgent to develop a dry powder fire extinguishing device with a direct spray of unmanned aerial vehicle. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention provides a UAV direct-spray dry powder fire extinguishing device, including a UAV, a frame is arranged below the UAV, and a first gas cylinder, a second gas cylinder, a third gas cylinder, and a glass breaker are arranged on the frame, and the glass breaker is arranged below the upper crossbeam of the frame; the first gas cylinder and the second gas cylinder are both arranged on the lower crossbeam of the frame, and the third gas cylinder is arranged in the middle above the first gas cylinder and the second gas cylinder; the first gas cylinder, the second gas cylinder, and the third gas cylinder are distributed in a triangular shape; the rear ends of the first gas cylinder and the second gas cylinder are both arranged An electronic trigger is provided, an upper shell is provided at the front and rear ends of the third gas cylinder, a connecting plug is provided at the front ends of the first gas cylinder and the second gas cylinder, and a sealing cap is provided at the connecting plug; the rear ends of the first gas cylinder, the second gas cylinder and the third gas cylinder are connected through a three-way pipe; a shooting tube is also provided at the front end of the third gas cylinder; an air outlet pipe is provided in the third gas cylinder, one end of the air outlet pipe is connected to the upper shell, and a filter is provided at the other end of the air outlet pipe; an air inlet pipe is also provided in the third gas cylinder, and the air inlet pipe is connected to the upper shell; a first blocking ball is provided in the air inlet pipe.

[0005] Furthermore, the frame is also provided with a generator, a water tank, a battery, an oil tank, and a detector; two generators are provided, and the two generators are symmetrically arranged on the cross beam on the frame, an oil tank is also provided between the two generators, a water tank is provided above the oil tank, and a battery is provided above the water tank.

[0006] Furthermore, the electronic trigger includes an electronic trigger housing, conical sealing caps arranged at both ends of the electronic trigger housing, an ignition powder storage chamber arranged between the two conical sealing caps, the ignition powder storage chamber is embedded with capsule-type ignition powder, and an igniter is arranged above the capsule-type ignition powder; the conical sealing cap is fixed by a cap pressing screw.

[0007] Furthermore, the igniter includes an igniter housing, a spacer sleeve arranged in the igniter housing, a gasket arranged below the spacer sleeve, and a rubber sealing sleeve arranged above the spacer sleeve. An anti-static electromagnetic ring is arranged in the spacer sleeve, one end of the wire is connected to the ignition head, and the other end of the wire is connected to a plug through the anti-static electromagnetic ring and the rubber sealing sleeve in sequence.

[0008] Furthermore, a rubber sealing ring is provided between the igniter and the electronic trigger housing.

[0009] Furthermore, the shooting tube is connected to the gas cylinder port at the front end of the third gas storage cylinder through the upper shell, and a second blocking ball is arranged in one end of the upper shell close to the shooting tube.

[0010] Furthermore, the glass breaker includes a fourth gas storage bottle, an electronic trigger arranged at the gas bottle mouth 5 of the fourth gas storage bottle, the electronic trigger is connected to the exhaust pipe through the shooting tube connecting nut, a spring is arranged in the exhaust pipe, one end of the spring is connected to the bayonet, and the other end of the spring is connected to the spring lock in the glass breaking head, the spring lock is arranged in the spring clamping hole, the spring lock includes a fixing block, the front end of the fixing block is fixed in the spring clamping hole by a bolt and nut; the front end of the exhaust pipe presses and seals the glass breaking head.

[0011] Furthermore, a bracket is provided below the electronic trigger, the bracket is fixedly connected to the lower crossbeam of the frame, and the bracket is connected to the electronic trigger via bolts and nuts.

[0012] Furthermore, the bottle tail connecting column of the fourth gas storage bottle is provided with a bottle tail bracket, and the bottle tail bracket is provided with a bracket connecting hole.

[0013] Furthermore, a cone sealing cap is arranged inside the connecting plug.

[0014] The advantages of the present invention are as follows: the present invention provides such a UAV direct-spray dry powder fire extinguishing device, the effective working time of the spraying agent is increased to 20-30 seconds, the spraying distance is 20-30 meters, the service life is 10-15 years, and the hybrid oil-electric flight endurance is 60 minutes. The emergency speed is fast, the spraying distance is long, the spraying time is long, the service life is long, the volume is small, the amount of medicine is large, the weight is light, the efficiency is high, the structure is simple, the cost is low, the fire source is controlled at the fastest speed, and the loss of life and property is minimized. The glass breaker warhead of the device will break the glass after firing and can be automatically retracted to avoid casualties of indoor personnel.

[0015] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the side cross-sectional structure connection of the UAV direct-injection dry powder fire extinguishing device.

[0017] Figure 2 It is a schematic diagram of the side cross-sectional structure connection of the UAV direct-injection dry powder fire extinguishing device in working state.

[0018] Figure 3 It is a schematic diagram of the side view structure of the UAV direct-injection dry powder fire extinguishing device.

[0019] Figure 4 It is a schematic diagram of the rear view structure connection of the UAV direct-injection dry powder fire extinguishing device.

[0020] Figure 5 It is a schematic diagram of the structural connection of the glass breaker from the side.

[0021] Figure 6It is a schematic diagram of the side view structure connection of the glass breaker in working state.

[0022] Figure 7 It is a schematic diagram of the structure of the igniter.

[0023] In the figure: 1. pipe connector nut; 2. igniter housing; 3. plug; 4. upper housing; 5. gas cylinder mouth; 6. airway; 7. air inlet pipe; 8. first blocking ball; 9. filter screen; 10. third gas cylinder; 11. dry powder medium; 12. air outlet pipe; 13. connecting hole; 14. second blocking ball; 15. shooting tube; 16. three-way connector; 17. sealing cap; 18. connecting plug; 19. cone sealing cap; 20. first gas cylinder; 21. inert gas; 22. ignition head; 23. bolt nut; 24. bracket; 25. electronic trigger housing; 26. capsule ignition powder; 27. three-way connector; 28. three-way pipeline; 29. ​​gas cylinder storage room; 30. ignition powder storage room; 31. tearing hole; 32. electronic trigger; 33. cap screw; 34. spiral Paddle; 35. Generator; 36. Glass breaker; 37. Water tank; 38. Battery; 39. Shell; 40. Oil tank; 41. Detector; 42. Second gas bottle; 43. Rack; 44. Buffer sleeve; 45. Ignitor; 46. Lower crossbeam of rack; 47. Upper crossbeam of rack; 48. Fixing block; 49. Rubber sealing ring; 50. Rubber sealing sleeve; 51. Bottle tail bracket; 52. Bottle tail connecting column; 53. Fourth gas bottle; 54. Bracket connecting hole; 55. Cap; 56. Fire exhaust hole; 57. Spring lock head; 58. Glass breaker head; 59. Spring clamp hole; 60. Spring; 61. Bayonet; 62. Anti-static electromagnetic ring; 63. Spacer; 64. Wire; 65. Gasket; 66. Exhaust pipe; 67. Spring storage room; 68. Shooting tube connecting nut; 69. Glass breaker head and tail. DETAILED DESCRIPTION

[0024] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] 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.

[0026] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "aligned", "overlap", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more. Example 1

[0028] This embodiment provides a Figure 1 to Figure 7The unmanned aerial vehicle direct-injection dry powder fire extinguishing device shown includes an unmanned aerial vehicle, a flat propeller 34 is arranged on the shell 39 of the unmanned aerial vehicle, a frame 43 is arranged below the unmanned aerial vehicle, a first gas cylinder 20, a second gas cylinder 42, a third gas cylinder 10, and a glass breaker 36 are arranged on the frame 43, an inert driving gas 21 is arranged in the gas cylinder storage chamber 29 of the first gas cylinder 20 and the second gas cylinder 42, and a dry powder medium 11 is arranged in the third gas cylinder 10. Specifically, the first gas cylinder 20 and the second gas cylinder 42 are arranged on the lower frame crossbeam 25 of the frame 15 through a bracket 24, and the bracket 24 is provided with a bracket connecting hole 54, which is convenient for the lower frame crossbeam 25 passes through, and the bracket 24 is also provided with a threaded hole for the bolt nut 23 to pass through to fix the first gas cylinder 14 and the second gas cylinder 24; the front ends of the first gas cylinder 14, the second gas cylinder 24 and the third gas cylinder 9 are fixed by a three-way connector 27. Specifically, the three supporting ends of the three-way connector 27 are respectively threadedly connected to the upper shell 4 or the connecting head 18 at the gas cylinder mouth 5 of a gas cylinder through the bolt nut 23; the glass breaker 36 is arranged below the upper crossbeam 47 of the rack 43; the first gas cylinder 20 and the second gas cylinder 42 are both arranged on the lower crossbeam 46 of the rack 43, and the third gas cylinder 10 is arranged on the lower crossbeam 46 of the rack 43. A gas cylinder 20 and a second gas cylinder 42 are arranged in the middle above the third gas cylinder 10, and a rubber gasket is arranged between the third gas cylinder 10 and the first gas cylinder 20 and the second gas cylinder 42, so that there is a gap of about 1 mm between the third gas cylinder 10 and the first gas cylinder 20 and the second gas cylinder 42, which can avoid mutual friction between them; the first gas cylinder 20, the second gas cylinder 42, and the third gas cylinder 10 are distributed in a triangular shape; the rear ends of the first gas cylinder 20 and the second gas cylinder 42 are both provided with an electronic trigger 32, and the front end and the rear end of the third gas cylinder 10 are both provided with an upper shell 4, specifically, the front end and the rear end of the third gas cylinder 10 are connected by a pipeline connector The nut 1 is threadedly connected to the upper shell body 4; the front ends of the first gas cylinder 20 and the second gas cylinder 42 are each provided with a connecting plug 18, and the connecting plug 18 is provided with a sealing cap 17; the rear ends of the first gas cylinder 20, the second gas cylinder 42 and the third gas cylinder 10 are connected through a three-way pipe 28; the front end of the third gas cylinder 10 is also provided with a shooting tube 15; the third gas cylinder 10 is provided with an outlet pipe 12, one end of which is connected to the upper shell body 4, and the other end of which is provided with a filter screen 9; the third gas cylinder 10 is also provided with an inlet pipe 7, and the inlet pipe 7 is connected to the upper shell body 4; the inlet pipe 7 is provided with a first blocking ball 8.

[0029] Furthermore, the upper shell 4 is also provided with a connecting hole 13 so as to fix the upper shell 4 to the drone via bolts and nuts 23 .

[0030] After the operation is turned on, the igniter 45 ignites the capsule ignition powder 26 to instantly open the tearing hole 31 of the corresponding conical sealing caps 19 on the left and right ends of the electronic trigger 32, so that the inert gas 21 in the first gas cylinder 20 and the second gas cylinder 42 is driven to instantly pass through the rear end gas cylinder bottle mouth 5, enter the ignition powder storage chamber 30, and then rush into the three-way pipe 28 respectively. After the gas is combined, it is passed to the airway 6 of the air inlet pipe 7 of the third gas cylinder 10, and the first blocking ball 8 is flushed open, so that the inert gas 21 and the dry powder medium 11 form a mixture, and rush into the airway 6 of the air outlet pipe 12 through the filter screen 9, and the second blocking ball 14 is flushed away for a second time to enter the airway 6 of the shooting tube 15 to form a huge mist.

[0031] Furthermore, the frame 43 is mainly composed of a frame upper crossbeam 47 and a frame lower crossbeam 46 through a three-way connector 16.

[0032] Furthermore, a plurality of buffer sleeves 44 are provided on the frame 43 to reduce the wear of the frame 43 .

[0033] Furthermore, the frame 43 is also provided with a generator 35, a water tank 37, a battery 38, an oil tank 40, and a detector 41; two generators 35 are provided, and the two generators 35 are symmetrically arranged on the cross beam 47 on the frame, and an oil tank 40 is also arranged between the two generators 35, a water tank 37 is arranged above the oil tank 40, and a battery 38 is arranged above the water tank 37. The generator 35 uses the fuel in the oil tank 38 as energy to work, generates electrical energy, and drives the plane propeller 34 to work through the electrical energy to achieve the purpose of flight, and the water in the water tank 40 is the cooling water for the generator 35 to work, and cools the generator 335; the battery 38 is used as a backup power supply to store energy.

[0034] Furthermore, the electronic trigger 32 includes an electronic trigger housing 25, conical sealing caps 19 arranged at both ends of the electronic trigger housing 25, an ignition powder storage chamber 30 arranged between the two conical sealing caps 19, the ignition powder storage chamber 30 is embedded with capsule-type ignition powder 26, and an igniter 45 is arranged above the capsule-type ignition powder 26; the conical sealing cap 19 is fixed by a cap pressing screw 33.

[0035] Furthermore, the igniter 45 includes an igniter housing 2, and the igniter 45 includes an igniter housing 2, a spacer 63 arranged in the igniter housing 2, a gasket 65 arranged below the spacer 63, and a rubber sealing sleeve 50 arranged above the spacer 63. An anti-static magnet 62 is arranged in the spacer 63, one end of the wire 64 is connected to the ignition head 22, and the other end of the wire 64 is connected to the plug 3 through the anti-static magnet ring 62 and the rubber sealing sleeve 50 in sequence; when the plug 3 is energized, the gunpowder of the ignition head can be ignited, so that the capsule ignition powder 26 in the ignition powder storage chamber 30 can be ignited, so that the conical sealing cap 19 in the electronic trigger 32 can be instantly opened to form a tearing hole 31.

[0036] Furthermore, a rubber sealing ring 49 is provided between the igniter 22 and the electronic trigger housing 25, so as to improve the sealing performance.

[0037] Furthermore, the shooting tube 15 is connected to the gas cylinder port 5 at the front end of the third gas storage cylinder 10 through the upper shell 4 , and a second blocking ball 14 is arranged in one end of the upper shell 4 close to the shooting tube 15 .

[0038] Furthermore, the second blocking ball 14 can also be arranged in the gas outlet pipe 12. The second blocking ball 14 mainly prevents the dry powder medium 11 from entering the shooting tube 15 and spilling out of the gas cylinder, resulting in insufficient dry powder medium 11 during fire extinguishing.

[0039] Furthermore, the glass breaker 36 includes a fourth gas cylinder 53, an electronic trigger 32 arranged at the gas cylinder mouth 5 of the fourth gas cylinder 53, the electronic trigger 32 is connected to the exhaust pipe 66 through the shooting tube connecting nut 68, a spring 60 is arranged in the exhaust pipe 66, one end of the spring 60 is connected to the bayonet 61, and the other end of the spring 60 is connected to the spring lock 57 in the glass breaking head 58, the spring lock 57 is arranged in the spring clamping hole 59, the spring lock 57 includes a fixing block 48, the front end of the fixing block 48 is fixed in the spring clamping hole 59 by a bolt nut 23; the front end of the exhaust pipe 66 presses and seals the glass breaking head 58; when the control switch of the electronic trigger 32 is powered on, the glass breaking head 58 will be ejected from the front end of the exhaust pipe 66. Specifically, after operation, the cone sealing caps 19 at the left and right ends of the electronic trigger 32 instantly open the tearing opening 31, and the front end gas cylinder mouth 5 of the gas cylinder 53 of the glass breaker 36 causes the driving inert gas 21 to instantly rush into the spring storage chamber 67 in the shooting tube 15, and the spring 60 and the glass breaking head 58 embedded in the spring storage chamber 67 are pushed out at the same time to break the glass and automatically retract.

[0040] Furthermore, a bracket 24 is provided below the electronic trigger 32 , and the bracket 24 is fixedly connected to the lower crossbeam 46 of the frame. The bracket 24 and the electronic trigger 32 are connected via bolts and nuts 23 .

[0041] Furthermore, the bottle tail connecting column 52 of the fourth gas storage bottle 53 is provided with a bottle tail bracket 51 , and the bottle tail bracket 51 is provided with a bracket connecting hole 54 .

[0042] Furthermore, a cone sealing cap 19 is provided inside the connection plug 18 .

[0043] Working principle: upon notification of the emergency fire command, the drone carried by the fire truck will quickly arrive at the scene. The detector 41 carried by the drone and the ground control system will simultaneously detect the fire, lock the target, open the glass breaker 36 to control the power switch, ignite the igniter to launch the glass breaker 58, and after the glass window is broken, the glass breaker 58 will automatically retract. At the same time, the fire extinguishing system consisting of the gas cylinder 10 and the gas cylinder 20, the gas cylinder 42 firing tube 15, the electronic trigger 32 and the plug 3 will be opened. After the operation is turned on, the igniter 45 will ignite the capsule ignition powder 26 to instantly open the tearing hole 31 of the cone sealing cap 19 at the left and right ends of the electronic trigger 32, so that the inert gas 21 in the gas cylinder mouth 5 at the left end of the gas cylinder 20 and the gas cylinder 42 will be discharged through the ignition powder storage chamber 30 and then communicate with each other, and rush into the three-way pipe 28, the airway 6 of the air intake pipe 7, and rush open the first blocking ball 8, so that the driving gas The liquid body and the dry powder medium 11 form a mixture, which is rushed into the airway 6 of the air outlet pipe 12 through the filter screen 9, and the second blocking ball 14 is washed away for the second time to enter the shooting tube 15 and the airway 6, forming a huge mist body, so that the spray agent has an effective working time of 20-30 seconds, a spray distance of 15-20 meters, a service life of 10-15 years, and a hybrid drone with oil and electricity to make the flight time 60 minutes. The glass breaking head 58 installed will break the glass after firing and can be automatically retracted to avoid casualties of indoor personnel, so as to minimize the loss of life and property.

[0044] In summary, the present embodiment provides such a UAV direct-spray dry powder fire extinguishing device, the effective working time of the spray agent is increased to 20-30 seconds, the spray distance is 20-30 meters, the service life is 10-15 years, and the hybrid oil-electric flight endurance is 60 minutes. It has fast emergency speed, long spray distance, long spray time, long service life, small size, large amount of medicine, light weight, high efficiency, simple structure, low cost, and can control the fire source at the fastest speed to minimize the loss of life and property. The glass breaker warhead installed will break the glass after firing and can be automatically retracted to avoid casualties of indoor personnel.

[0045] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A UAV direct spray dry powder fire extinguishing device, comprising a UAV, characterized in that: A frame (43) is arranged below the drone, and a first gas cylinder (20), a second gas cylinder (42), a third gas cylinder (10), and a glass breaker (36) are arranged on the frame (43); the glass breaker (36) is arranged below an upper frame crossbeam (47) of the frame (43); the first gas cylinder (20) and the second gas cylinder (42) are both arranged on a lower frame crossbeam (46) of the frame (43); the third gas cylinder (10) is arranged in the middle above the first gas cylinder (20) and the second gas cylinder (42); the first gas cylinder (20), the second gas cylinder (42), and the third gas cylinder (10) are distributed in a triangular shape; the rear ends of the first gas cylinder (20) and the second gas cylinder (42) are both provided with an electronic trigger (32); the front end of the third gas cylinder (10) is provided with an electronic trigger (32). The front and rear ends of the first gas cylinder (20) and the second gas cylinder (42) are both provided with an upper shell body (4); the front ends of the first gas cylinder (20) and the second gas cylinder (42) are both provided with a connecting plug (18), and the connecting plug (18) is provided with a sealing cap (17); the rear ends of the first gas cylinder (20), the second gas cylinder (42) and the third gas cylinder (10) are connected through a three-way pipe (28); the front end of the third gas cylinder (10) is also provided with a shooting tube (15); an air outlet pipe (12) is provided in the third gas cylinder (10), one end of the air outlet pipe (12) is connected to the upper shell body (4), and the other end of the air outlet pipe (12) is provided with a filter screen (9); an air inlet pipe (7) is also provided in the third gas cylinder (10), and the air inlet pipe (7) is connected to the upper shell body (4); a first blocking ball (8) is provided in the air inlet pipe (7); The frame (43) is also provided with a generator (35), a water tank (37), a battery (38), an oil tank (40), and a detector (41); two generators (35) are provided, and the two generators (35) are symmetrically arranged on the crossbeam (47) on the frame; an oil tank (40) is also arranged between the two generators (35); a water tank (37) is arranged above the oil tank (40); and a battery (38) is arranged above the water tank (37); The glass breaker (36) comprises a fourth gas storage bottle (53), an electronic trigger (32) arranged at the gas bottle mouth (5) of the fourth gas storage bottle (53), the electronic trigger (32) being connected to an exhaust pipe (66) via a shooting tube connecting nut (68), a spring (60) being arranged in the exhaust pipe (66), one end of the spring (60) being connected to a bayonet (61), and the other end of the spring (60) being connected to a spring locking head (57) in a glass breaking head (58), the spring locking head (57) being arranged in a spring locking hole (59), the spring locking head (57) comprising a fixing block (48), the front end of the fixing block (48) being fixed in the spring locking hole (59) via a bolt nut (23); the front end of the exhaust pipe (66) is pressed and sealed against the glass breaking head (58).

2. The UAV direct spray dry powder fire extinguishing device according to claim 1, characterized in that: The electronic trigger (32) comprises an electronic trigger housing (25), conical sealing caps (19) arranged at both ends of the electronic trigger housing (25), an ignition powder storage chamber (30) arranged between the two conical sealing caps (19), capsule-type ignition powder (26) embedded in the ignition powder storage chamber (30), and an igniter (45) arranged above the capsule-type ignition powder (26); the conical sealing cap (19) is fixed by a cap pressing screw (33).

3. The UAV direct spray dry powder fire extinguishing device according to claim 2, characterized in that: The igniter (45) comprises an igniter housing (2), a spacer (63) arranged in the igniter housing (2), a gasket (65) arranged below the spacer (63), and a rubber sealing sleeve (50) arranged above the spacer (63); an anti-static electromagnetic ring (62) is arranged in the spacer (63); one end of a wire (64) is connected to an ignition head (22); and the other end of the wire (64) is connected to a plug (3) via the anti-static electromagnetic ring (62) and the rubber sealing sleeve (50) in sequence.

4. The UAV direct spray dry powder fire extinguishing device according to claim 2, characterized in that: A rubber sealing ring (49) is provided between the igniter (45) and the electronic trigger housing (25).

5. The UAV direct spray dry powder fire extinguishing device according to claim 1, characterized in that: The shooting tube (15) is connected to the gas cylinder port (5) at the front end of the third gas storage cylinder (10) through the upper shell (4), and a second blocking ball (14) is arranged in one end of the upper shell (4) close to the shooting tube (15).

6. The UAV direct spray dry powder fire extinguishing device according to claim 1, characterized in that: A bracket (24) is provided below the electronic trigger (32); the bracket (24) is fixedly connected to a lower crossbeam (46) of the frame; the bracket (24) and the electronic trigger (32) are connected via bolts and nuts (23).

7. The UAV direct spray dry powder fire extinguishing device according to claim 6, characterized in that: The bottle tail connection column (52) of the fourth gas storage bottle (53) is provided with a bottle tail bracket (51), and the bottle tail bracket (51) is provided with a bracket connection hole (54).

8. The UAV direct spray dry powder fire extinguishing device according to claim 1, characterized in that: A cone sealing cap (19) is arranged inside the connecting plug (18).

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