CZ35320U1 - Mobile automatic fire extinguishing equipment - Google Patents

Description

Field of technology

The technical solution concerns the field of automatic fire-fighting equipment, especially fire-fighting equipment applicable to hard-to-reach objects with limited ground access to fire-fighting equipment, such as high-rise buildings, forest or mountain objects, etc.

Prior art

Until now, stationary or mobile firefighting equipment has been used for extinguishing in buildings with limited access, such as high-rise buildings, individual hard-to-reach buildings in the outskirts of municipalities, or even for forest fires, including, in the case of large forest fires, aircraft technology. The aviation technology used in large-scale forest fires is mainly large-volume bags with water released from these large-volume bags during the passage of aircraft or helicopters over these large-scale fires. However, this technique cannot usually be used for fires in high-rise buildings, and the available installed stationary fire extinguishers have a limited effectiveness and are usually insufficient. In most cases, the installed stationary fire-fighting technology often only secures the interiors of buildings, and in most cases it is also necessary to take action against the fire from the outside of the façade on which the fire spreads.

Newly, fire extinguishing technology using effective fine water mist extinguishing, which has a high thermal effect, low water consumption, uses a reduced pipe size, thus achieving a low weight of the whole system, and is also friendly to fire fighting in buildings with limited ground access to firefighting equipment. the environment. However, the disadvantage is the fact that this technology uses water as a fire extinguisher and it is therefore not possible to use it especially in extinguishing fires in electrical equipment.

Another of the known solutions for the elimination of fires in buildings with limited ground access to firefighting equipment, which can also be used in electrical equipment, both in closed or open spaces, is the so-called "fire grenade". The plastic "fire grenade", which contains the active substance for extinguishing the fire, is thrown in the direction of the fire or on a solid surface above the fire, cracking and the liquid spraying over the area affected by the fire. Immediately after spraying, the active substance cools the burning surface to only 3 ° C and then, through a chemical and physical reaction, forms a protective layer which completely extinguishes the fire and prevents it from igniting again. This extinguishing agent is able to extinguish a fire within 10 seconds without serious damage or damage to objects in the protected area. The extinguishing fluid used absorbs toxic gases produced by combustion, which allows normal breathing to persons who are in the fire area or entered it in order to extinguish the fire. A fire-fighting "hand grenade" for extinguishing fires is a suitable extinguishing agent for use in households, offices, warehouses, workshops, vehicles and vessels: It is often used by professional firefighters for their work, especially for extinguishing fires that are difficult to extinguish with water. foam and powder means or other classical methods, or if there are objects of special value in the fire area, such as works of art, documents, antiques, computers and the like.

Recently, extinguishing agents using aircraft have been used to a greater extent to extinguish fires in inaccessible places, especially aerial drones carrying extinguishing agents in the form of fire grenades or bombs.

One of these solutions is, for example, the solution according to utility model CN 204452939 U, which describes a fire drone with a fixed collision protection, consisting of the body of the drone and in the lower part of this body arranged mainly to detonate a fire bomb, which is equipped with a control and barrel aiming equipment.

-1 CZ 35320 UI

Another known solution is the solution described in utility model CN 204864620 U, which describes a type of fire extinguishing system which comprises a barrel carrier, and mainly for detonating a piercing bomb to create access, in particular, to spaces in high-rise buildings.

The disadvantage of the current conventional solutions without the use of aircraft is, in particular, the fact that they essentially do not allow fast, accurate and effective extinguishing of fires, especially in high-rise buildings and in buildings with limited ground access. Previously known solutions using aircraft have limited use due to the low number of fire grenades and the complexity of the solution.

The essence of the technical solution

The aim of the presented technical solution is a highly mobile automatic device for fast, accurate and efficient fire extinguishing, especially in high-rise buildings and in buildings with limited ground access.

The above object is achieved by an automatic mobile fire extinguishing device according to this technical solution, consisting of a remotely controlled aircraft, a drone, equipped in particular with control software, an autonomous navigation system connected to thermal and position sensors and cameras, and a throwing device mounted in its suspension, grenade launcher or cannon, for the application of fire extinguishing means consisting of fire grenades, this throwing device comprising a barrel assembly with stored fire grenades in the number of 2 to 16 barrels and pressure part to create the firing pressure needed to launch or fire fire grenades when each individual barrel in the assembly the barrel is formed by a hollow cylindrical body of light solid material, preferably duralumin, open on the first side and connected on the other side to a barrel or barrel holder, provided with a pressure reduction to reduce the muzzle velocity of the fire grenade, this barrel or barrel holder being in comp a corresponding number of launching mains connected to a pressure part of the device consisting of a chamber or pressure bomb for storing a charge of propellant gas, preferably CO2, stored in this chamber at a pressure of 1 to 1.5 MPa (10 to 15 bar), and a pressure distribution system pressure, i.e. pressure pipes connected to individual pressure valves, and pressure equalizers when the fire extinguishing grenades are provided with a fragmentation envelope and preferably filled with a liquid extinguishing mixture with a high fireplace cooling effect preventing simultaneous re-ignition and damage from fire water flow one fire grenade extinguishes about 8 m ^{3 of} space. The pressure part of the device consisting of a chamber with CO2 content is dimensioned according to the number of barrels for storing fire grenades and is controlled by a control unit for pressure throwing a fire grenade into the fireplace, with CO2 content in the chamber ranging from 50 g to 900 g depending on the number of barrels depending on the carrying capacity of an aircraft drone. The mobile automatic fire extinguishing device is connected by means of control software, and the throwing device itself is removably mechanically connected to the platform of the aircraft, the drone by means of a main holder connected to the suspension element.

The mobile automatic fire extinguishing device according to this technical solution thus enables efficient unmanned execution of firefighting interventions with high accuracy and mobility in inaccessible areas, eg from the outside of high-rise buildings, fires in inaccessible terrain and the like, supported by autonomous navigation.

The used extinguishing agent enables fast localization of the fire also thanks to the automatic system of firing fire extinguishing grenades.

- 2 CZ 35320 UI

Explanation of drawings

The mobile fire extinguishing device will be explained in more detail with the aid of the drawing in which

Giant. 1 shows an axonometric front view of the device, FIG. 2 shows a rear axonometric view of this device, and FIG. 3 shows a detail of the rear view of the pressure main grenade launcher assembly.

Examples of technical solution

Example 1

The mobile fire extinguishing device according to FIG. 1 to FIG. 3, consists of an aircraft four-propeller drone 1, equipped with a camera system, guidance system, thermal and position sensors and position maintenance system, which are remotely controllable by control software stored on the base body of this aircraft drone 1 together with power units 11, electric motors , provided with propellers, when batteries 12 for propulsion electric motors with propellers and other navigation and control systems of this mobile fire extinguishing device are further mounted on the base body of the aircraft drone 1. The throwing device 2 for the application of fire-fighting grenades consists of an assembly of eight firing barrels 21 formed by hollow cylindrical bodies made of duralumin, housed in a barrel holder 22 with a pressure reduction to reduce the muzzle velocity of the fire-fighting grenade. The pressure part 3 of the device for generating the pressure required to discharge the fire grenades from the launcher assembly 21 comprises pressure pipes 31, pressure valves 32, pressure equalizers 33 and a propellant chamber 34 which is CO 2 and is connected to the main holder 22 in the assembly. eight mains 21 by means of pressure valves 32, which are connected to the pressure pipes 31 using pressure equalizers 33. The propellant chamber 34 contains 425 g of CO2 stored for firing eight fire grenades from individual barrels at a pressure of 1 to 1.5 MPa (10 to 15 bar), and is suspended below the firing barrels 21 in the longitudinal axis of these eight barrels 21 and is connected with other elements of the pressure part 3 of the device.

The fire extinguishing process, for example in a high-rise building, begins with the take-off of a mobile automatic device equipped with fire extinguishing grenades according to this technical solution and, if necessary, with the take-off of a separate device to create the opening needed to apply fire grenades in the building envelope. Navigation systems bring a mobile automatic fire extinguishing device to the building envelope, where this device is navigated by thermal sensors and a camera to the fire site at a distance of about 10 m to 12 m from the building facade, where a fire attack is launched by automatic grenade launching. .

Industrial applicability

The mobile automatic fire extinguishing device according to this technical solution is applicable in all areas where rapid fire-fighting intervention is required, especially where the range of existing extinguishing agents is limited or the direct participation of firefighters would be too dangerous.

Claims (5)

CLAIMS FOR PROTECTION Mobile automatic fire extinguishing device comprising an aircraft drone (1), a throwing device (2) for applying fire grenades and a pressure part (3) of a device for generating the pressure required for the application of fire grenades, characterized in that the throwing device (2) ) for the application of fire grenades consists of an assembly of at least two launching mains (21) connected to a main holder (22) provided with a pressure reduction, and the pressure part (3) of the device comprises pressure distribution lines (31), pressure valves (32) a number of launchers (21), a pressure equalizer (33) and a propellant storage chamber (34). Mobile automatic fire extinguishing device according to claim 1, characterized in that the firing barrels (21) are formed by hollow cylindrical bodies of light and solid material open on the first side and connected on the other side to the barrel holder (22) (21). or a barrel (21) provided with a pressure reduction to reduce the muzzle velocity of the fire grenade, said holder (22) of the barrel (21) or barrel (21) being connected to the pressure part (3) of the device by means of pressure valves (32) launcher main (21). Mobile automatic fire extinguishing device according to claims 1 and 2, characterized in that the propellant storage chamber (34) is connected to the holder (via pressure valves (32), pressure pipes (31) and pressure equalizers (33) 22) the barrel (21) or the barrel (21) is suspended in the longitudinal axis of the launcher assembly (21) below this launcher assembly (21) to maintain the balance of the device when the aircraft drone (1) is provided with a navigation system, positioning system and a control system remotely controllable by control software stored on the base body of the aircraft drone (1). Mobile automatic fire extinguishing device according to claims 1 to 3, characterized in that the propellant chamber (34) suspended below the firing barrels (21) contains 50 g to 900 g of CO 2 stored under a vacuum of 1 to 1.5 MPa. Mobile automatic fire extinguishing device according to claims 1 to 4, characterized in that the throwing device (2) is removably mechanically connected to the aircraft drone platform (1) by means of a launcher holder (22) connected to a suspension element.