RU21146U1 - POWDER FIRE EXTINGUISHING MODULE - Google Patents

Description

IPC A 62C 13/22; 35/00 Powder Extinguishing Module

The utility model relates to fire fighting equipment, namely, powder agents for extinguishing fires of class A, B, C and E, mainly in explosive areas of industrial premises.

At present, there are no reliable means of powder fire extinguishing that can be effectively used to suppress fire sources in rooms and in technological plants located in areas where explosive mixtures are accumulated.

Therefore, for areas in which the accumulation of explosive mixtures is possible, fire extinguishing means of an explosion-proof design are necessary, when triggered, sparks of an open flame do not form and the surface temperature does not allow the explosion of gas-air mixtures.

Known utility model No. 12791 of the Russian Federation class. A 62 C 35/10 publ. 02.10.2000 a powder fire extinguishing module, the casing of which consists of two parts, a fire extinguishing powder is placed inside the sealed cavity, and a gas generator is placed on one of the casing parts, the module is equipped with a nozzle and the gas ducts are made in a certain way.

The disadvantages that prevent the use of this module include:

- when the module is triggered at the time of operation of the solid fuel charge, gases with a high temperature of about 1500-2000 C are formed, which can cause an air-gas mixture explosion in the room;

-explosion of the gas-air mixture in the room can be initiated by parts of the module housing heated to a high temperature.

The invention is known patent No. 2147902 of the Russian Federation, cl. A62C 13/22. publ. 04/27/2000 "An automatic powder fire extinguisher containing a housing filled with fire-extinguishing powder, a sealed cover, a chamber with a gas-generating charge and an electric activator with live wires.

The disadvantage is the possibility of initiating an explosion of an explosive mixture in a room with heated gases of a gas-generating charge when the module is triggered.

; 1-, V-1-; -ABOUT- ; 8. 6 -:

The device according to patent No. 2147902 is the most blinzny to the claimed technical solution for the combination of essential features and is selected as a prototype.

Thus, the task is to ensure the explosion-proof performance of a powder fire extinguisher with electric start.

A utility model, the object of which is a powder fire extinguishing module, is aimed at solving this problem.

The essence of the proposed utility model lies in the fact that the combination of structural features prevents the breakthrough of hot gases from the fire extinguisher body, which can cause the explosion of explosive mixtures contained in the environment, and also helps to lower the temperature of the gas that extends the extinguishing powder from the module.

The specified technical result is achieved by the fact that the powder fire extinguishing module containing a sealed housing, consisting of two parts, a removable cup is made in the upper part of the body, equipped with a sealed fastener, at least one outlet is made in the glass, notches are made on the lower part of the body, inside a fire extinguishing powder is placed on the case, and a gas generating charge and an electroactivator with current-carrying circuits emerging from the glass through an airtight lid are located in the upper part of the glass I mean that the glass is fully or partially housed in the case, a cylindrical protrusion is additionally made on the glass lid, facing the inside of the glass, the inner surfaces of the glass and fasteners are equipped with heat shields, the glass is filled with a gas cooler, and fire protection nets are additionally placed inside the glass, and in the lower part of the glass the grid is placed with the possibility of overlapping the outlet, and in the upper part of the glass the grid is placed between the gas cooler and the gas-generating charge, the powder module Extinguishing is further provided with a cable duct to accommodate the current carrying circuits, the channel vsholnen sealable.

 s

Based on the set of essential features, the proposed utility model is new and not known from the prior art.

The essence of the resulting model is illustrated in the drawing.

In figure 1. a sectional view of a general view of a powder fire extinguishing module is presented, where:

1- current-carrying circuits

2-cable channel

3- sealed lid

4- glass

5- electroktivator

6- gas generating charge

7- building

8- vent hole 9-extinguishing powder 10- gas cooler

11 heat-insulating screen

12- fire protection net

13-notches

14-cylindrical protrusion 15-sealant

8 as an extinguishing powder, the powder “Pirant-A” (TU 301-11-10-90) is used.

As a gas cooler - gas cooler TU 4854-003-1719106-96.

The module fire extinguishing works as follows.

An electrical signal (for example, from a fire detector) through live circuits (1) laid in the cable channel (2) and passing through the sealed cover (3) of the glass (4) (in a specific example, the glass is partially placed in the housing (7)) on the electric activator (5), starts the gas-generating charge (6), as a result of which pressure and gases are circulated in the glass (4), which is hermetically installed in the upper part of the housing (7), passing through the cooler (10) and through the outlet (8) ), enter the internal volume of the module and loosen the extinguishing powder (9).

In this case, the temperature of the gases loosening the extinguishing powder (9) decreases and the temperature of the glass surface heating (4) decreases simultaneously due to the cooler (10) and heat-insulating screens (11).

The presence of flame retardant nets (12) prevents the leakage of flame into the internal cavity of the module.

The pressure inside the module housing (7) increases. Upon reaching a certain level of internal pressure, the lower part of the housing (7) opens along the notches (13) and the fire extinguishing powder (9) is ejected at high speed in the form of a hemispherical volume flow.

The design of the sealed cover (3) of the glass (4), in particular, the presence of a cylindrical protrusion (14) and the presence of a cable channel (2) with the possibility of sealing (15), prevent the displacement of displacing hot gases from the module and prevent the explosion from being transferred to the surrounding explosive atmosphere when any concentration of explosive mixture in air.

The ratio of the mass of the gas-generating charge (6) and the mass of the gas cooler (10) is from 1: 0.5 to 1: 5.0, which determines the optimal temperature of the outgoing hot gases. At a ratio lower than the declared temperature of the exhaust gases may be high enough to provoke an explosion. When the mass ratio is higher than stated, the pressure necessary to open the lower part of the housing (7) may not be provided.

Tests of the module in a room with explosive atmospheres of stoichiometric composition (propane-air), gas-air, hydrogen-air) showed that the module does not trigger an explosion of an explosive mixture in the room.

Fire tests of the prototype module confirm the high fire extinguishing ability when extinguishing fires of class "A," B, "C and" E and the explosion-proof design of the module.

Thus, based on the foregoing, it follows that the utility model is industrially applicable and, when used, provides the indicated technical result.

Claims (2)

1. A powder fire extinguishing module comprising a sealed housing consisting of two parts, a removable cup provided with a sealed cover is made in the upper part of the body, at least one outlet is made in the glass, notches are made on the lower part of the body, fire extinguishing powder is placed inside the body, and in the upper part of the glass there is a gas-generating charge and an electroactivator with current-carrying circuits leaving the glass through a sealed cover, characterized in that the glass is fully or partially placed in the housing Of course, on the lid of the glass there is additionally made a cylindrical protrusion facing the inside of the glass, the inner surfaces of the glass and the lid provided with heat shields, and the glass is filled with a gas cooler, fire protection nets are additionally placed inside the glass, and the mesh is placed in the lower part of the glass to block the outlet, and in the upper part of the glass, a grid is placed between the gas cooler and the gas-generating charge, the powder fire extinguishing module is additionally equipped with a cable channel ohm for placement of live circuits, while the channel is made with the possibility of sealing. 2. The powder fire extinguishing module according to claim 1, characterized in that the ratio of the mass of the gas-generating charge and the mass of the gas cooler is from 1: 0.5 to 1: 5.0.