RU202630U1 - REACTIVE EXTINGUISHER PROJECT - Google Patents

Abstract

The utility model relates to devices for supplying a fire extinguishing agent (OS) to the combustion center, designed to extinguish fires in high-rise buildings, in which the OS is sprayed with incendiary (combustible) substances that emit compressed gas. The technical result is achieved through the use of recoilless projectile firing technology , consisting of a solid-propellant jet engine and a bow filled with an OS with a spraying charge inside, which is triggered inside a burning room. A projectile-fire extinguisher consists of a solid-propellant jet engine, a bow with a fire extinguishing composition, separated from the engine by a partition, into which a sealed cylinder is screwed, containing a pyrotechnic retarder, a detonating cord passing inside the atomizing charge, and connected to an initiating cartridge with a percussion igniter and a retarder. In the bow there is a filler neck, closed with a stopper. On the body of the nose of the projectile, notches are made, along which the shell breaks after the detonating cord and the spray charge are triggered, with the formation of two "rosettes". In this case, the sputtering of the OS occurs both in the radial and in the axial directions. 1 ill.

Description

The utility model relates to devices for supplying a fire extinguishing composition (OS) to the combustion center, designed to extinguish fires in high-rise buildings, in which the OS is sprayed with incendiary (combustible) substances that emit compressed gas.

Known technology developed in China [1], using rockets filled with a fire extinguishing agent, capable of hitting targets up to 300 meters high, which is about 80 floors of a residential building. The guidance system works using infrared and laser sensors, and the ballistic computer launches with the calculation of the trajectory of the missile. The mass of fire extinguishing powder 3.6 kg allows you to quickly extinguish a fire in a room up to 60 cubic meters.

The disadvantage of this technology is the high cost and complexity of the complex with guided missiles, as well as a small amount of OS. Parts of the rocket (engine, computing and command unit, controls) constitute a significant mass and their fragments are destructive elements when the rocket explodes.

There are known attempts to use Ka-32A helicopters to extinguish fires inside buildings [2]. The work was carried out by helicopters of the Moscow Aviation Center on behalf of the Moscow Government.

Disadvantages. According to flight safety requirements [3], the minimum distance from the ends of the rotor blades to the vertical wall during maneuvering should be at least 50 m. It is dangerous to come closer because of turbulence and unpredictable vertical air flows. The pump supplying water must be powerful so that the water can overcome the dense air flow from the screws (the jet must be compact), reach the building and enter the room. The task of stabilizing the hovering of a helicopter in a turbulent atmosphere is technically difficult, besides taking into account the reactive force from the supply of a stream of water.

Known utility model (prototype) "Fire extinguishing device" (RU 113155 from 10.02.2012). The device is a container with a fire extinguishing composition, closed at the ends of the front and rear covers, ejected from the launcher. The container has a spray of extinguishing composition made in the form of a cylindrical tube, closed at both ends, located in the front part of the container along its longitudinal axis. The device contains a charge of a powder pressure accumulator, a retarding charge and a Laval nozzle with an expelling charge placed in the nozzle, connected in series in a common housing located in the rear part of the container on the same axis with the atomizer, while the powder pressure accumulator adjoins the atomizer at the end.

The disadvantages of this device are: 1 - expelling charge is an explosive, therefore, detonation is possible, and uniform combustion is necessary; 2 - the combustion of the powder pressure accumulator starts from behind, which leads either to the emission of gases into the nozzle, or to the pushing of the accumulator into the atomizer, which does not guarantee a uniform distribution of the gas pressure; 3 - rupture of the container body is not controllable and is most likely in the rear part at the location of the powder accumulator and, as a result, incomplete release of the extinguishing agent.

The task of the utility model is to simplify the design of a device for supplying OS to a fire in a high-rise building with a simultaneous increase in the specific content of OS in the device and to reduce OS losses when it is delivered to a fire.

The technical result is achieved through the use of recoilless technology for firing a projectile consisting of a solid-propellant jet engine and a bow filled with an OS with a spraying charge inside, which is triggered inside a burning room. The figure shows a longitudinal section of a rocket-fire extinguisher.

Serial multiple launch rocket systems used on combat helicopters can be used as a recoilless weapon.

The fire extinguishing projectile consists of: a solid propellant jet engine 1, a bow 2 with a fire extinguishing composition 3, separated from the engine 1 by a partition 4, into which a sealed cylinder 5 is screwed, containing a pyrotechnic retarder 6, a detonating cord 7 passing inside a spray charge 8, and connected to an initiating cartridge 9 with a percussion igniter and a retarder. In the nose part there is a neck 10 for refueling the OS, closed with a stopper 11. Notches are made on the body of the nose part of the projectile, along which the shell breaks after the detonating cord and the spray charge are triggered to form two "rosettes". In this case, the sputtering of the OS occurs both in the radial and in the axial directions.

The amount of solid fuel and the rate of its combustion are designed to completely burn out the fuel in the area of movement of the projectile in the barrel of the gun and to give the projectile velocity, which provides an aimed shot at a given distance (50-70 m). The pyrotechnic retarder ensures that the detonating cord is triggered after flying the specified distance. The kinetic energy of the fire extinguisher is enough to shatter the glass in the window. The initiating cartridge with a percussion igniter capsule provides for undermining the projectile nose and spraying the OS in the event of a collision with an obstacle.

The absence of a guidance and control system simplifies the design of the fire extinguisher missile and its weight. Burnout of fuel while driving along the bore allows to reduce the thickness of the engine walls. Reducing the weight of the structure allows you to increase the weight of the OS.

A hole with a plug in the nose of the projectile allows you to refuel the desired type of OS immediately before use. This prevents the fire extinguishing powder from caking, and also does not require warm rooms for storing projectiles if they are filled with water-based OS.

Used sources.

1.https://novostivl.ru/msg/23040.htm

2.https: //news.rambler,ru/fire/41854665/? Utm_content = news_media & ut m_medium = read_more & utm_source = copylink

3. Order of the Ministry of Transport of Russia dated July 31, 2009 No. 128 (as revised on June 14, 2019) On the approval of the Federal Aviation Rules "Preparation and performance of flights in civil aviation of the Russian Federation". (Registered in the Ministry of Justice of Russia on August 31, 2009 N 14645).

Claims (1)

A projectile fire extinguisher consisting of a solid propellant engine, a bow filled with a fire extinguishing agent and separated from the engine by a partition, into which a sealed cylinder is screwed containing a pyrotechnic retarder, a detonating cord passing inside the atomizing charge and connected to an initiating cartridge with a percussion igniter and a retarder, in the bow there is a neck, made with the ability to refuel the nose with a fire extinguishing agent and closed with a plug, while the pyrotechnic retarder is configured to ensure the detonating cord is triggered after flying a given distance, and notches are made on the body of the bow, which enable the body the nose of the projectile burst with the formation of two "rosettes" and the spraying of the extinguishing agent both in the radial and axial directions.

Images