RU2129893C1 - Method of fire suppression - Google Patents

Abstract

FIELD: fire suppression in placed difficult-to-reach. SUBSTANCE: method includes formation of protective strip by arrangement of pipes with radial holes with the help of flying vehicle, supply of fore suppression substance under pressure to protective strip through radial holes. At least two pipes are fastened to anchoring device which is dropped on protective strip. Pipes are laid over protective strip after fastening of anchoring device and they are arranged simultaneously on protective strip at fixed intervals between them that provides for formation of zone covered by fire suppression substance when it is sprayed from radial holes of pipes. EFFECT: reduced labor input, practically whole mechanization of process.

Description

 The invention relates to methods for suppressing a fire in hard-to-reach places and rough terrain in the absence of access roads, close airfields in the most severe form of fire - horseback, when the fire spreads along the tops of the trees in the direction of the wind, followed by covering the entire forest massif.

 There is a method of suppressing a fire when a fire extinguishing agent is placed on an aircraft and sprayed over a source of ignition (Big Soviet Encyclopedia. Moscow, Soviet Encyclopedia, 1975, v.20, p. 152).

 A helicopter is used as an aircraft, and a liquid medium is a means of suppressing a fire.

 This method has several disadvantages: low efficiency, since the suppressing substance when spraying from an aircraft has a very low efficiency in contact with fire and it falls more on the ground between trees (forest fire in the taiga is the most difficult); the impact is very short in time per unit of track (at a speed of 300 km / h - 0.01 s), which in principle cannot suppress a fire even at the micro level; a small amount of a substance that suppresses a fire falls on the ignition site (even at the micro level), which does not allow us to talk about any effect on it; Shuttle delivery of water (as the simplest and most affordable substance and at the same time cheap) by any aircraft, taking into account filling and double spans, is so time-consuming, and therefore it is difficult to talk about any suppression of the fire, as secondary fire will occur under a layer of ash.

 A known method of suppressing fire, including the formation of a protective strip by placing the aircraft pipes with radial holes and supplying a fire suppressing substance under pressure to the protective strip through the radial holes (RU 2056879 C1, 03/27/96).

 The disadvantage of this method is the possibility of flight of the flame in the form of sparks or direct transfer from the wind through the protective strip even when placing several pipes in one block, which is formed by single pipes stretched independently from each other, since they are placed at different distances between themselves and the fire will they "jump" one at a time, which reduces the effectiveness of the barrier.

 The objective of the invention is to provide a method of suppressing a fire, providing a technical result, consisting in increasing the efficiency of the barrier strip.

 This technical result in a method of suppressing fire, including the formation of a protective strip by placing the aircraft with pipes with radial holes and supplying a fire suppressing substance under pressure to the protective strip through the radial holes, is achieved by the fact that at least two pipes are attached to the anchor device, which is dumped onto a protective strip, pull the pipes along the protective strip after fixing the anchor device and place them simultaneously on the protective strip at a fixed distance between them, otorrhea corresponds to the formation zone with an overwhelming fire substance when sprayed from the radial holes of pipes.

 The method is as follows.

 Nearby located pipes form a zone between themselves, which is filled with a substance that suppresses fire. For water, these are jets that completely imitate shallow rain, capable of suppressing a fire during prolonged exposure or preparing a strip for meeting with the fire shaft. Naturally, the wider such a strip, the higher the efficiency of the delay of the fire shaft, both under the crowns and on the tops of the trees. The distance between the pipes depends on the pressure and location of the holes on the pipe, as well as on the diameter, if you take all these parameters to be constant, except for pressure, which depends on the transport pipe. A transport pipe is a pipe that delivers water to the strip, and a pipe with holes is one that is located along the strip. The transport pipe goes to the side of the source with the fire suppressing substance, and then a second pipe with holes can be located, which overlaps the area of the first pipe and continues the strip. There may be several sources. The simplest source is a stream, a river. It is more difficult if there is no such source, then they form a water intake point / for simplicity / in the meadow. Water is delivered there in containers, dumped and flights are repeated to ensure a continuous supply of water during a fire hazard.

 Providing a fixed distance between the pipes reach the jumpers between them. There may be several such pipes on their reels. Flexible jumpers are connected by their internal cavity through counter check valves with the internal cavities of the pipes. Then, when creating pressure inside the pipes for water supply, the same pressure will be in the internal cavity of the jumper, it will straighten and spread the pipes to the full length. This solution is the simplest, but another technical solution is possible.

 The protective strip actually creates a rain zone with a strip width that eliminates the movement of the fire shaft through it at any level, since the wood pulp is highly moistened with a constant supply of moisture to the protection zone from high temperature, which does not allow the pulp to burst.

 It is possible to pull the pipes through the combustion zone to reduce the overall fire source if the pipes are made of refractory material, and in this case the pipes are drawn at a height that excludes the effect of high temperature on the aircraft.

 All equipment can be delivered by air and parachuted, that is, all operations are practically carried out by a team of 10-15 people for every 15 km, including pulling the pipe, which dramatically increases the efficiency of fire suppression with the almost complete safety of fire cooperators.

Claims (1)

 A method of suppressing a fire, comprising forming a protective strip by placing the aircraft with radial holes and supplying a fire-suppressing substance under pressure to the protective strip through radial holes, characterized in that at least two pipes are attached to the anchor device, which is dumped on the protective strip, stretched pipes along the protective strip after fixing the anchor device and place them simultaneously on the protective strip at a fixed distance between them, which corresponds to the image aniyu zone with overwhelming fire substance when sprayed from the radial holes of pipes.