RU113155U1 - FIRE FIGHTING DEVICE - Google Patents

Abstract

A fire extinguishing device, which is a container with a fire extinguishing composition, closed at the ends of the front and rear covers, ejected from the launcher, including a pyrotechnic source of delivery of the extinguishing composition to the fire, characterized in that it additionally contains a spray of extinguishing composition made in the form of a cylindrical tube, located in the front part of the container along its longitudinal axis, closed at both ends, and as a pyrotechnic source of delivery of the extinguishing agent to the fire source, it contains sequentially installed in a common housing located in the rear part of the container on the same axis with the spray gun, interconnected powder charge a pressure accumulator, a retarding charge and a Laval nozzle with an expelling charge placed in it, while the powder pressure accumulator is adjacent to the atomizer at the end.

Description

The utility model (PM) relates to fire fighting means. Most effectively, PM can be used in fire extinguishing devices designed to extinguish fires located at remote distances from fire extinguishing means., For example, when a fire occurs in a high-rise building.

Currently, there is a tendency to use the capsular fire extinguishing method, which has some advantages over the traditional inkjet method. The problem lies in the difficulty of delivering the capsule with the extinguishing agent to the aiming point chosen by the firefighter, especially when the fire is significantly higher than the level at which it is located. An analysis of patent and other scientific and technical information shows that capsule delivery vehicles can be classified by the method of reporting capsule initial speed:

- using the muscular strength of a person;

- using pyrotechnic (powder) gas sources;

- using sources of compressed air.

The first method is very limited, because it involves the use of capsules with a small sample of a fire extinguishing composition (up to 0.3 kg), throwable over long distances (15-20 m). The use of such capsules can be carried out only from the platforms of the lift, located at the same level with the window of the illuminated room.

The second method can be divided into two options:

- throwing devices with throwback, which is compensated by the effort on the part of the human body.

- large masses of missile capsules with a simultaneous increase in their initial speed can be achieved if recoilless throwing devices are used, such as widely used recoilless melee weapons (anti-tank grenade launchers, reactive infantry flamethrowers, etc.).

The relevance of the development of PM is associated with the possibility of using any fire extinguishing compositions in the patented design, including gels, the use of which significantly increases the efficiency of fire extinguishing. These include, for example, a gel developed by the German company BASF AG on the basis of a polymer, characterized by high adhesive ability, high adhesion to the surface exposed to burning, forming a non-combustible liquid swelling upon heating on it.

Among the known means of capsular delivery, the use of pyrotechnic (powder) gas sources (US 5507350, US 7325350) is still relevant.

A device is known for providing delivery through artillery pieces (US 5507350).

Disadvantage: cannot be used to extinguish a fire in buildings.

Known fire extinguishing device - a bomb in the form of a shell, including fire extinguishing material, placed in a housing having a front and rear. In the back of the case in the cavity there is a detonator, explosive charge and a timer. In the bow of the case there is an activator that is triggered by heat in the fire. The activator is connected by electrical wiring to the detonator (US Patent No. 7,896,092 B2, published 01.03.2011).

The device is thrown from the helicopter and is triggered by the heat generated by the burning building when it enters the fire.

The design flaw is the unreliability of operation in the early stages of a fire.

Known fire extinguishing device, taken as a prototype, representing a container (sleeve), ejected from a pistol, in front of which is placed a fire extinguishing powder, and in the rear part is a powder composition and (fuse) capsule (US Patent No. 7325350 B2, publ. 05.02. 2008). The front end is made with openings for the exit of the extinguishing agent to the fire, The disadvantage of this design is the inability to use effective fire extinguishing compositions - gels, water, as it is possible to plug holes. The design is designed to use only powder formulations. In addition, it is intended for use only in a gun, which limits its use. It is unsuitable for extinguishing a fire in high-rise buildings, since safe use is designed for a small amount of powder composition in this design, which implies the use of capsules with a small weight of fire extinguishing composition (up to 0.3 kg) that can be thrown over long distances (15-20 m).

The problem solved by the patented utility model is to create a device for extinguishing a fire without the above disadvantages.

The technical result from the use of the utility model is to increase the fire extinguishing efficiency of tall buildings by accurately delivering the fire extinguishing agent to the fire at a distance of more than 20 meters and ensuring the possibility of using effective fire extinguishing compositions.

The specified technical result is achieved by a fire extinguishing device, which is a container with a fire extinguishing composition, closed from the ends of the front and rear covers, ejected from the launcher, including a pyrotechnic source for delivering the fire extinguishing composition to the fire, in which, according to a utility model, an additional spray extinguishing agent made in the form of a cylindrical tube placed in front of the container along its longitudinal axis, closed at both ends, and as a pyro It contains a technical source for delivering the extinguishing agent to the fire source, which is sequentially placed in a common housing, mounted on the rear of the container on the same axis as the spray gun, adjacent to it at the end, interconnected by the charge of the powder pressure accumulator, the retarding charge and the Laval nozzle with it expelling charge.

The utility model is illustrated in the drawing, which shows a fire extinguishing device in the context, where:

1 - front cover;

2 - container

3 - spray;

4 - fire extinguishing agent;

5 - housing pyrotechnic device

6 - charge of the powder pressure accumulator;

7 - retarding charge;

8 - kick charge;

9 - Laval nozzle;

10 - back cover of the container

A fire extinguishing device is a container 2 with a fire extinguishing composition 4, closed at both ends of the front 1 and rear 10 lids. The device comprises a spray 3 of extinguishing agent 4, made in the form of a cylindrical tube placed in front of the container 2 along its longitudinal axis. The installation also includes sequentially installed in a common housing 5, located in the rear of the container on the same axis with the atomizer, interconnected by a charge of a powder pressure accumulator (PAD), a retarding charge and a Laval nozzle with an expelling charge placed in the nozzle. The expelling charge is a small amount of explosive. The Laval nozzle is a channel narrowed in the middle and consists of two truncated cones, conjugated with narrow ends. The nozzle outlet is located in the back cover 10. In this case, the PAD adjoins the nozzle 3 at the end. The pyrotechnic device, including the housing 5, charges 6, 7, 8 and the Laval nozzle are located in it, are pyrotechnic means for delivering the extinguishing agent to the fire.

The operation of the device.

In the starting device (not in the drawing), when an electric current is supplied to the electric igniter (not shown in the drawing), the expelling charge 7 is ignited, and the fire extinguishing device is shot from the starting device (not shown) in the direction of the fire strip.

When the knockout charge 7 is burning, the charge of the moderator 6 is simultaneously ignited. After a predetermined time, the charge of the moderator 6 ignites the charge of the powder pressure accumulator 5. The resulting gases penetrate the atomizer tube 3, break it and mix with the extinguishing agent 4 (extinguishing powder or gel).

Under pressure, the container 2 is destroyed, and the extinguishing agent 4 is sprayed at the site of the fire.

A patented device can provide accurate delivery to a remote fire, for example through a window of a high-rise building, a highly effective fire extinguishing agent.

Claims (1)

A fire extinguishing device, which is a container with a fire extinguishing composition, closed from the ends of the front and rear covers, ejected from the launcher, including a pyrotechnic source for delivering the fire extinguishing composition to the fire, characterized in that it further comprises a spray extinguishing composition made in the form of a cylindrical tube, placed in front of the container along its longitudinal axis, closed at both ends, and as a pyrotechnic source of delivery of the extinguishing agent to the eye In case of fire, it contains successively installed in a common housing located in the rear of the container on the same axis with the atomizer, interconnected charge of the pressure accumulator, a slow charge and a Laval nozzle with an expelling charge placed in it, while the powder pressure accumulator is adjacent to the atomizer butt.