Urban high-rise glass breaking dry powder extinguisher system based on unmanned aerial vehicle

Abstract

The invention provides an urban high-rise glass breaking dry powder extinguisher system based on an unmanned aerial vehicle, belongs to the technical field of fire fighting, and solves the high-rise fire extinguishing problem. An urban high-rise glass breaking dry powder fire extinguisher system based on an unmanned aerial vehicle comprises a launcher and a fire extinguisher with glass breaking and fire extinguishing dual functions, the launcher comprises a light glass fiber reinforced plastic launch canister, a fast-assembly breech and a 10V-25V nonpolar adaptive black box control mechanism, and the fire extinguisher is composed of a full-standby projectile body and a rocket engine. The full-standby projectile body is integrated with an aluminum projectile body, superfine dry powder, a gas production mechanism and an electronic control mechanism, and a rocket engine guarantees accurate flight. During operation, the unmanned aerial vehicle launches a fire extinguisher at the position of 12-18 meters, after the flat-cone-shaped spray head of the unmanned aerial vehicle penetrates through glass, the electronic control mechanism delays ignition and gas production, the baffle is opened under the pressure of 2.3 MPa, and the multi-directional spray holes statically spray dry powder to achieve total flooding fire extinguishing, the system can carry multiple loads through one machine, adaptability is high, and the fire extinguishing efficiency and safety are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of fire fighting technology, and relates to an unmanned aerial vehicle, in particular to a city high-rise glass breaking dry powder fire extinguisher system based on an unmanned aerial vehicle. BACKGROUND

[0002] In today's world, city high-rise building fires, large warehouse fires, oil depot fires, hazardous material warehouse fires and other similar fires occur frequently. Unfeeling large fires are threatening the property and life safety of the country and the people with their unpredictability and great destructive power.

[0003] High-rise fire fighting mainly relies on its own high-rise fire fighting measures. City high-rise auxiliary fire fighting has a high class fire fighting truck, but the height is limited, and is greatly affected by the surrounding environment of the building, and is more dangerous. In order to solve the above problems, using an unmanned aerial vehicle equipped with a fire extinguisher to implement fire extinguishing becomes an important high-rise fire extinguishing method, which is not limited by fire extinguishing conditions and can achieve rapid response. SUMMARY

[0004] The present application aims at the above-mentioned problems existing in the prior art, and proposes a city high-rise glass breaking dry powder fire extinguisher system based on an unmanned aerial vehicle. The technical problem to be solved by the present application is to realize multi-loading of one machine through integrated design of the launcher and the fire extinguisher, improve fire extinguishing efficiency, ensure glass breaking reliability, fire extinguishing safety and equipment versatility through structure optimization and electronic control technology, and lay a practical foundation for unmanned aerial vehicles in the field of city high-rise fire extinguishing.

[0005] The object of the present application can be achieved by the following technical solutions: A city high-rise glass breaking dry powder fire extinguisher system based on an unmanned aerial vehicle is composed of an airborne city high-rise glass breaking fire extinguisher launcher and an airborne city high-rise glass breaking fire extinguisher, and the two cooperate to realize integrated operation of glass breaking and fire extinguishing. The specific technical details are as follows: Preferably, the launcher serves as an unmanned aerial vehicle carrying carrier and control unit, including a launching barrel, a cannon tail and a black box control mechanism. The fire extinguisher serves as an execution unit and has glass breaking and fire extinguishing dual functions, and is composed of a full-service projectile body and a rocket engine. The full-service projectile body integrates a retreat stopping and spraying mechanism, a projectile body, ultrafine dry powder, a base, a gas generating mechanism and an electronic control mechanism. The rocket engine provides flight power and includes a combustion chamber, a tail wing, a propellant and an igniter.

[0006] Preferably, the launching barrel is made of lightweight high-strength glass steel material, which can maximize weight reduction while ensuring structural strength, allowing a single unmanned aerial vehicle to carry two or more launchers, achieving one machine carrying multiple launchers to improve fire extinguishing efficiency. The tail of the cannon adopts a structure that is easy to mount and connect, improving the efficiency of on-site operations. The black box control mechanism is fixed outside the tail, with built-in polarity matching modules and rectifier modules that can adapt to different specifications of 10V-25V DC power supply of unmanned aerial vehicles, and support non-polar connection without distinguishing between positive and negative poles to achieve reliable power supply, adapting to mainstream unmanned aerial vehicle models on the market. The control mechanism is connected to the fire extinguisher through an aviation socket with anti-vibration design, which can effectively avoid the problem of poor contact caused by vibration during the flight of the unmanned aerial vehicle.

[0007] Preferably, the projectile body is made of lightweight aluminum metal material, which has small density and high strength, reducing the overall weight for easy carrying by the unmanned aerial vehicle, and also capable of bearing the impact load when the glass is broken and the gas pressure when the gas is generated, ensuring that the fire extinguisher will not be damaged when penetrating the glass and colliding with obstacles.

[0008] Further, in the anti-back ejection mechanism of the head of the fire extinguisher, the nozzle is designed with a flat-tapered aluminum alloy soft material, the flat-tapered structure can enhance the stability of contact with the glass and avoid slipping, and the soft aluminum alloy material can deform when colliding, increasing the contact area and improving the success rate of breaking the glass, and reliably penetrating 16mm thick tempered glass.

[0009] Further, the rocket engine adopts military and civilian technology, and the propellant dosage is designed to ensure that the flight distance of the fire extinguisher does not exceed 40 meters, meeting the operational needs of 50-meter floor spacing between high-rise buildings in cities and controlling the flight speed to avoid disintegration after entering the room due to excessive speed. The tail wing structure improves the stability during flight, making the launch accuracy within 20 meters to pass through a 1.0m x 1.0m window. The ignition connector adopts an aviation plug that precisely matches the aviation socket of the launcher, ensuring reliable connection in a vibrating environment.

[0010] Further, an ultra-fine dry powder extinguishing agent is used, with more than 90% of its particles being smaller than 20μm, having good flowability and easy atomization characteristics, with a design concentration of less than 120g / m³, much lower than ordinary dry powder, and higher extinguishing efficiency, which can quickly diffuse to every corner of the enclosed space to achieve full submersion fire extinguishing.

[0011] Further, the anti-back ejection mechanism is composed of a baffle and a nozzle, the aluminum baffle is pre-slit, when the gas pressure in the projectile body reaches 2.3MPa (design threshold), the slit breaks to open the baffle, ensuring reliable ejection of dry powder, the nozzle is provided with multiple rows of directional nozzles (such as 12 side nozzles), the direction of the nozzles is optimized to offset the reaction force generated during ejection, achieving static slow-release ejection, avoiding the fire extinguisher from tilting or moving, and preventing explosion caused by excessive ejection pressure, eliminating secondary disasters.

[0012] Further, fixed inside the base, the circuit board is packaged by a pouring process to improve structural strength and resistance to vibration and high temperature. The electronic control mechanism undertakes core control functions: first, it controls the ignition of the rocket engine to achieve the launch of the fire extinguisher; second, it has a muzzle launch safety function, locking the gas generating mechanism in the non-launching state to prevent accidental spraying; third, it realizes electronic delay ignition, starting timing after the fire extinguisher is launched, and controlling the ignition of the gas generating column about 4 seconds after landing to ensure personnel evacuation time; fourth, it has a dud protection function, locking the gas generating mechanism to avoid accidental spraying in the air if the fire extinguisher fails to launch.

[0013] Further, the built-in gas generating column is designed with a special formula, has the characteristics of only static combustion and no explosion, generates stable gas pressure after combustion, and pushes the superfine dry powder out of the nozzle orifice and atomizes. The base integrates the gas generating mechanism, nozzle, rocket engine and other components to form an integrated structure, improving overall reliability.

[0014] Compared with the prior art, the city high-rise glass breaking dry powder fire extinguisher system based on the unmanned aerial vehicle has the following advantages: 1. The efficiency of fire extinguishing is greatly improved: the launcher is made of lightweight glass steel material, the fire extinguisher is made of aluminum structure, one machine can carry multiple loads (a single unmanned aerial vehicle can carry two or more), and multiple unmanned aerial vehicles can work together to quickly form a fire extinguishing force, solving the problem of low efficiency of traditional methods.

[0015] 2. High reliability of glass breaking and fire extinguishing: the flat conical aluminum alloy soft nozzle design ensures reliable penetration of 16mm tempered glass, the aluminum projectile ensures the structure is intact after landing collision, the combination of electronic delay ignition and pressure controlled spraying realizes precise control of the fire extinguishing time, and avoids early spraying or accidental spraying.

[0016] 3. Excellent operation safety: the stop injection mechanism offsets the reaction force through the directional orifice to achieve static slow release injection, eliminates explosion and secondary disasters, and multiple electronic protection designs such as dud protection and muzzle safety ensure the safety of unmanned aerial vehicle flight and operation.

[0017] 4. Strong adaptability and versatility: the black box control mechanism supports 10V-25V non-polar power connection, adapts to different types of unmanned aerial vehicles, and the aviation plug and socket connection design adapts to the air vibration environment, improving equipment compatibility.

[0018] 5. Excellent fire extinguishing efficiency: superfine dry powder has small particle size, low concentration and high efficiency, can quickly diffuse throughout the room to achieve full submersion fire extinguishing, and is suitable for various types of enclosed space fires, especially for high-rise enclosed room fires. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1is a schematic diagram of a launcher structure of a city high-rise broken glass dry powder fire extinguisher system based on a UAV according to the present application; Figure 2 is a schematic diagram of a fire extinguisher structure of a city high-rise broken glass dry powder fire extinguisher system based on a UAV according to the present application; Figure 3 is a schematic diagram of a gas production structure of a fire extinguisher of a city high-rise broken glass dry powder fire extinguisher system based on a UAV according to the present application; Figure 4 is a schematic diagram of a fire extinguisher stop ejecting mechanism of a city high-rise broken glass dry powder fire extinguisher system based on a UAV according to the present application. DETAILED DESCRIPTION

[0020] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the accompanying drawings, but the present application is not limited to these embodiments.

[0021] As shown in Figure 1 - Figure 4 , a city high-rise broken glass dry powder fire extinguisher system based on a UAV: Example 1: System component assembly and deployment In this embodiment, the launch tube of the launcher is made of lightweight high-strength glass steel material, the breech is structured for easy clamping and wiring, the black box control mechanism is fixed to the breech, has 10V-25V non-polarity power supply adaptation capability, and is connected with the fire extinguisher through an aviation socket.

[0022] The projectile body of the fire extinguisher is an aluminum metal structure, which is connected in turn with a stop ejecting mechanism (including a flat conical aluminum alloy soft nozzle and an aluminum pre-set slot baffle), a gas production mechanism (with a built-in static combustion characteristic gas producing column), a base (with an electronic control mechanism fixed by a filling and sealing process), and a rocket engine containing propellant, an igniter (aviation plug connector), and a tail wing, to complete the assembly of the fire extinguisher.

[0023] When assembling, the fire extinguisher is clamped to the breech of the launcher, the aviation plug is inserted into the aviation socket, and according to the UAV load, two or more launchers are fixed on the abdomen of the UAV or the bracket through special clamps or brackets to complete the system deployment.

[0024] Example 2: High-rise fire extinguishing application Application scenario: a fire occurs in a room of a city high-rise building, and a UAV needs to carry the system to implement fire extinguishing.

[0025] Operation process: the UAV takes off from the fire station, carries the launcher with the fire extinguisher to the fire scene, hovers at 12-18 meters away from the window of the burning room, the pilot aims at the window through the ranging sight, clicks the launch button, the fire extinguisher is launched by the rocket engine, penetrates the 16mm tempered glass into the room, ignites the gas generating column after falling to the ground for about 4 seconds, and the superfine dry powder is sprayed and atomized through the multi-row nozzle of the spray head, quickly diffuses in the room to extinguish the fire.

[0026] If the fire is not completely controlled, multiple UAVs can be controlled to continuously launch fire extinguishers until the fire is extinguished.

[0027] Example 3: verification of system safety and adaptability Safety verification: simulate the scene of unsuccessful launching of the fire extinguisher, lock the gas generating mechanism by the electronic control mechanism, no dry powder spraying in the air, simulate the scene of landing collision of the fire extinguisher, the aluminum bullet structure is intact, no disintegration or damage, simulate the dry powder spraying scene, the directional nozzle of the spray head offsets the reaction force, the fire extinguisher sprays statically, no explosion or secondary disaster.

[0028] Adaptability verification: the system is carried on different types of UAVs (power voltage in the range of 10V-25V), the black box control mechanism realizes non-polar reliable connection, the aviation plug and socket connection is stable in the flight vibration environment of the UAV, and there is no problem of poor contact The working principle of the present application: the fire extinguishing operation process of the system follows the logic of quick response-precise delivery-safe fire extinguishing. According to the payload capacity of the unmanned aerial vehicle, two or more launchers are fixed on the belly of the unmanned aerial vehicle or the bracket through special clamps or brackets. The fire extinguisher is clamped to the tail of the launcher and the line connection is completed. The aviation plug and aviation socket are reliably connected. The pilot adjusts the equipment to ensure that the black box control mechanism is adapted to the power supply of the unmanned aerial vehicle. The range finder is calibrated. After a fire occurs in a high-rise building in the city, the unmanned aerial vehicle takes off from the preset fire station or the fire truck. Multiple unmanned aerial vehicles carrying fire extinguishers quickly arrive at the fire scene. The number of launches is determined according to the size of the fire. The unmanned aerial vehicle hovers at a distance of 12-18 meters from the window of the burning room. The pilot aims at the window through the range finder and clicks the launch button. The power supply of the unmanned aerial vehicle charges the chip on the missile through the external lead of the launcher, the aviation socket, and the electronic control mechanism. The safety is unlocked and the rocket engine propellant is ignited. The gunpowder gas propels the fire extinguisher to fly forward. At the same time, the chip on the missile starts the delay timer. The fire extinguisher with a flat conical nozzle contacts the glass and penetrates the 16mm thick tempered glass. After entering the burning room, it collides with obstacles and falls to the ground. The aluminum projectile ensures the integrity of the structure. After falling to the ground for about 4 seconds, the electronic control mechanism controls the ignition head to ignite the gas generating column. The static combustion of the gas generating column generates a gas pressure of 2.3MPa, which pushes the aluminum baffle to open along the groove. The superfine dry powder is slowly sprayed and atomized through the 12 side nozzles, and the atomized dry powder quickly spreads to the entire room. Through physical and chemical action, the fire is quickly extinguished. The on-site command system controls the unmanned aerial vehicle to continuously launch the fire extinguisher according to the change of the fire, until the fire is completely extinguished.

[0029] The specific embodiments described herein merely exemplify the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A drone-based urban high-rise glass-breaking dry powder fire extinguisher system, characterized in that, The invention includes an airborne urban high-rise glass-breaking fire extinguishing launcher and an airborne urban high-rise glass-breaking fire extinguisher. The launcher includes a launch tube, a breech, and a black box control mechanism. The fire extinguisher has the function of breaking glass and extinguishing fires in urban high-rise buildings. It consists of a complete projectile body and a rocket engine connected to the projectile body. The complete projectile body includes a recoil-stopping spray mechanism, a projectile body, ultrafine dry powder, a base, a gas generation mechanism, and an electronic control mechanism. The rocket engine includes a combustion chamber, tail fins, propellant, and an ignition device.

2. The system according to claim 1, characterized in that, The launch tube is made of lightweight and high-strength fiberglass. The breech structure is compatible with fire extinguisher mounting and wiring. The black box control mechanism is fixed to the breech and has polarity matching and rectification functions. It can be adapted to 10V~25V DC power supply non-polarity connection and achieves reliable connection through aviation socket to adapt to the aerial vibration environment of UAV.

3. The system according to claim 1, characterized in that, The electronic control mechanism is fixed inside the base and is used to control the ignition of the propellant igniter, the muzzle firing safety, and the ignition of the electronically delayed propellant charge, thereby generating combustion gases inside the projectile.

4. The system according to claim 1, characterized in that, The projectile body is an aluminum metal structure. The anti-reverse injection mechanism includes a baffle and a nozzle. The baffle opens when the internal combustion gas pressure reaches the design value. The nozzle is provided with multiple rows of directional spray holes to achieve static slow-release injection of ultra-fine dry powder.

5. The system according to claim 1, characterized in that, In the anti-recoil spray mechanism of the full-body projectile head, the nozzle adopts a flat conical aluminum alloy soft material structure, and the nozzle orifice is set with a multi-row directional structure, which can counteract the spray reaction force.

6. The system according to claim 1, characterized in that, The gas-generating mechanism is equipped with a gas-generating propellant column, which is designed with static combustion characteristics. The baffle is made of aluminum and has pre-cut grooves that are adapted to a 2.3MPa pressure opening design.

7. The system according to claim 1, characterized in that, The ultrafine dry powder has a particle size of more than 90% less than 20μm, and the fire extinguishing design concentration is less than 120g / m³. The circuit board of the electronic control mechanism is fixed by potting process, and the base integrates and connects the gas generation mechanism and the rocket engine.

8. The system according to claim 1, characterized in that, The rocket engine's propellant dosage is adapted to a flight distance of no more than 40 meters, and its launch accuracy is within 20 meters, passing through a 1.0m × 1.0m window opening. The ignition connector uses an aviation plug, which is adapted to connect with the launcher's aviation socket.

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