SU37634A1 - Fire extinguishing bomb - Google Patents

Description

It is known to extinguish fires using various extinguishing powders or masses, which are scattered or otherwise distributed on the surface of burning objects, and the fire is extinguished partly because of the formation of dust and, partly, during the formation of foam, or due to the formation of gases, flame is extinguished or the possibility of its spreading is eliminated. However, bringing these extinguishing agents to a fire center is very difficult and dangerous, or even impossible.

It has already been proposed to place said extinguishing powders in readily destructible tanks and insert an explosive charge inside the powder, into which the ignition cord protruding from the tank is immersed. Such extinguishing bombs can either be located in a space threatened by a fire, or in the event of a fire these bombs can be thrown into flames. The extinguishing effect is achieved in such a way that the protruding cord ignites from a fire and causes an explosion of charge, with the result that the quenching powder must be scattered. This also means

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use a sudden increase in air pressure caused by an explosion to extinguish.

All known extinguishing bombs have, however, serious flaws, which in many cases make their use impossible or dangerous. First of all, charge ignition was carried out from a cord with insufficient reliability and often too late, when the fire was already too widespread, besides TOGO) tanks, which for the most part are made of a folder, should be with relatively strong walls so that when dropped they immediately sprawled; This caused the use of a strong explosive charge, so that the quenching powder could unfold well during an explosion. In view of the strong charge, working with such bombs turned out to be dangerous, and one could also expect significant damage during an explosion. The subject of the present invention is such an extinguishing bomb, the design of which provides a quick and reliable ignition of the charge instantly after being hit by a fire, what is the design, moreover, so strong that not only by hand, but also with the help of a throwing device.

it is possible to throw a bomb into the fire without fear that it will burst when falling, and at the same time a charge so small that it is sufficient only to scatter the extinguishing powder.

For this purpose, in the proposed bomb, the charge is arranged in a tubular vessel made of celluloid or from other highly flammable material, which is supplied with not numerous prominent appendages to facilitate the burning. The extinguishing agent is in an annular vessel made of paper or other combustible material, and the inner annular walls of this reservoir are adjacent to the hollow tubular body of celluloid or the like, so that the walls of the reservoir ignite or burn when ignited. extinguishing agent. A shtanga passes through the tubular hollow body, which carries two metal cups of a multi-faceted shape, having on the outer surface of the cholus, into which convex sheets of cardboard or the like are inserted with tension, and under pressure from the inside these sheets open outwards, charge for spraying extinguishing agent.

The boom can be mounted on a stick that provides the possibility of throwing out an extinguishing bomb by hand or with a spring or similar device.

In FIG. 1 is a side view of a fire extinguishing bomb; FIG. 2 - the same, top view; FIG. 3 is a section along the line CD in FIG. 2; FIG. 4 is a section along the line 4.J5 in FIG. 3

In the proposed fire-extinguishing bomb on a stick or on a metal pipe 7, pincers 5 are fastened. they remain together even when thrown by hand.

An aluminum block 8 is mounted on the core 4, which is provided with a cholot on the outer edges and for rapid heat transfer covers part of the core 4 with a sleeve 9. The front end of the bomb is closed by a flap cup 7, which is pressed by means of a nut 6. Between both 7 v cups a wick is placed consisting of two shells 7 / and / 2; a wick concentrically surrounds the core 4 and the sleeve 9. The wick is made of a highly flammable material, such as celluloid, and in the middle has a chamber 75 where the powder is injected. There are also appendages 14 passing through the slots 75 of cups 7 and 5, which ensures rapid ignition at the site of the fire. A circular vessel 16, for example, made of paper or other material that does not suffer from the composition, is an extinguishing powder, e.g. sodium carbonate or a liquid such as carbon tetrachloride. This vessel 16 is protected by free sheets 10 from a folder or the like from damage. Leaf 10 is clamped in the troughs of cups 7 and 5, and a sealing ring 18 is still laid on top of them.

When a bomb is thrown into a fire, a wick is ignited from contact of appendages 14 with fire or as a result of heat transferred from metal cups 7 and. This results in an explosion of the powder in the chamber / 5, and simultaneously or somewhat before, the inner ring walls of the vessel 76 adjacent to the wick 77, 72 are charred. The vessel 16 is completely destroyed by the explosion, and the sheets 10 are pulled out when the adhesive ring 18 is torn out, so that their edges come out of the grooves of the cups 7 and 5. The tire formed by the sheets 10 is thus completely destroyed, and the extinguishing agent 77, not meeting any resistance, is scattered.

The subject of the patent.

1. A fire extinguishing bomb consisting of a body that is easily destroyed by the explosion of a powder charge, a prisoner in it through the transfer of a flammable material, using a powder-like extinguishing agent laid the body around for