RU2755336C1 - Aviation fire extinguishing container - Google Patents

Abstract

FIELD: fire safety.

SUBSTANCE: invention relates to the field of fire safety, in particular to aircraft containers for remote spraying of extinguishing agents, and concerns devices for localization and/or extinguishing fires and can be used to effectively combat large-scale and powerful fires, including forest and forest-steppe. An aviation fire extinguishing container contains a reservoir made of a thermoplastic polymer material, a fire extinguishing agent and a spray charge. The reservoir is made in the form of a drop of at least two different-strength parts: the upper part from above has the shape of a cylinder, smoothly turning into a truncated cone, and a convex lower part made in the form of a folding hemisphere with a wall thickness 1.5–2 times less than the upper part of the container. Moreover, the angle of the truncated cone coincides with the solid angle of directional spraying. In addition, a lid is fixed to the upper cylindrical part of the reservoir, in the lower part of which there is a sealed cartridge containing a spray charge and an initiating cord. In the upper part of the lid there is a valve for filling the extinguishing mixture and a tube for removing the initiating cord included in the coupling, into which at least one electric detonator is inserted before lifting the helicopter.

EFFECT: expansion of the technical capabilities of the container due to the effective extinguishing of both upper and lower fires.

1 cl, 1 dwg

Description

The invention relates to the field of fire safety, in particular to aviation containers for remote spraying of fire extinguishing compositions and concerns devices for localizing and / or extinguishing fires, and can be used to effectively combat large-scale and powerful fires, including forest and forest-steppe ones.

For aerial extinguishing of forest fires, aiming and suspended aerial spray containers (ARC), containing 330 liters and later 400 liters of liquid, fire extinguishing agents: water, solutions and a spray charge, are promising.

From the prior art, a method is known to prevent the spread of forest fires, including the creation of fire barriers in all layers of the forest, by spraying incombustible materials perpendicular to the spread of the fire (RF patent No. 1134202, publ. 15.01.85). The essence of the method for limiting the spread of forest fires is to create fire barriers in all layers of the forest by spraying non-combustible agents perpendicular to the direction of fire propagation, and in order to increase the efficiency of localization of crown fires, materials that solidify in air at P = (1 ± 5% ) P _atm and (15 ± 5) ° C≤T≤50 ° C to increase the specific surface of the forest canopy, where P is the pressure, T is the temperature. Agents are sprayed from aircraft and air-hardened at tree edges.

The disadvantage of this method is the low efficiency of stopping the spread of the Flame of the Horse Fire and the fragmented spraying of agents on the grass, the lower canopy of the Forest, the lack of effective localization of the ground fire. The cost of departures is incomparable with the extinguishing effect achieved.

Closest to the proposed invention is an aviation fire extinguishing agent according to Russian patent No. 2242259, publ. 20.12.2004, including a container with a fire extinguishing agent and a dispersing charge, an explosive device and a stabilizer, and it is equipped with a suspension system located on the outer surface of the container symmetrically to the plane passing through the center of mass of the device and made in the form of two hoops, spaced and rigidly connected by a pad with ears, while the container and the stabilizer are made of thermoplastic polymer material.

The disadvantage of the known device is that, spherical liquid spraying effectively knocks down the flame of a top fire, but 10 minutes after extinguishing 70-90% of the temporarily extinguished area quickly re-ignites. This makes it necessary to make many sorties for multiple, fire extinguishing bombardments of local areas of forest fires, or requires immediate work of fire brigades after aircraft extinguishing.

The technical result of the proposed device is the expansion of the technical capabilities of the container due to the effective extinguishing of both top and bottom fires.

The technical result is achieved by an aviation fire-extinguishing container containing a container made of a thermoplastic polymer material, a fire-extinguishing agent and a spray charge, characterized in that the container is made of a drop-like shape from at least two parts of different strength: the upper part from above has the shape of a cylinder, smoothly turning into a truncated a cone and a convex lower part, made in the form of a folding hemisphere with a wall thickness of 1.5 - 2 times less than the upper part of the container, and the angle of the truncated cone coincides with the solid angle of directional spraying, in addition, a lid is fixed to the upper cylindrical part of the container, in the lower part of which there is a sealed cartridge containing a spray charge and an initiating cord, in the upper part of the lid there are a valve for pouring a fire extinguishing mixture and a tube for leading out an initiating cord, which is included in the coupling, into which at least one electrodet is inserted before lifting the helicopter onator. In the inner space of the lid, there is a dam, with a high specific gravity, enclosed in a separate hermetically sealed elastic film.

The figure is a cross-sectional side view of the container.

The container consists of:

- A container including a rigid body 1 and a hemispherical part 2;

- cover 3;

- bolt 4;

- sealed cartridge 5;

- spray charge 6;

- initiating cord 7;

- connecting pins 8;

- fire extinguishing agent 9;

- valve 10;

- cover 11;

- tube 12;

- connecting sleeve 13;

- electric detonator 14;

- stemming 15.

The upper part of the container body 1 is made of a standard non-metallic cylindrical pipe, smoothly turning into a truncated cone. The lower hemispherical part 2 of the container is foldable and less strong with a wall 1.5-2 times less thick than the body 1. To the cylindrical part of the body 1, in its upper part, a cover 3 is attached with at least three bolts 4. At the bottom of the cover 3 placed a sealed cartridge 5, which contains a spray charge 6 and a detonating cord 7. In addition, the cartridge 5 is fixed, with at least three connecting pins 8, on the bottom wall of the cover 3. The walls of the body 1 and the bottom of the cartridge 5 are in contact with the upper layer of the extinguishing agent 9, for example, water. Water is supplied to the container through the valve 10 on the top cover 3. The valve 10 is threadedly closed by the cover 11. The spray charges 6 are made of a blasting explosive of a wide range with a detonation velocity from 1000 to 8000 m / sec. The initiating cord 7 has at least one thread and through the tube 12 it goes beyond the top cover 3 and enters the coupling 13, into which at least one electric detonator 14 is inserted before lifting the helicopter. for example, from a heavy bulk material with a high specific gravity, placed in a separate hermetically sealed elastic film.

The upper part of the container is painted red and the name of the container, its main parameters and brief instructions for use are written on it in white. The lower part 2, made in the form of a folding hemisphere, is painted blue or white. The coupling is painted white or blue.

The container is used as follows. The container capacity is manufactured in an industrial production. In its manufacture, it is envisaged to mount the cartridge 5 in the cylindrical part of the body 1 and the valve 10 for pouring a fire extinguishing agent or natural water. Then, the atomizing charge 6 and the initiating cord 7 are inserted into the cartridge 5 with the end of the DSh in the sleeve 13 on the cover 3 of the upper part of the housing 1. After that, the agent 9 is poured into the container through the valve 10. After pouring agent 9, valve 10 is screwed in until it stops or closed and sealed. The container is suspended from the bomb-holder and the electric detonator 14 is placed in the sleeve 13 with all the precautions as when equipping a combat or mine charge. After that, the helicopter flies to the center of the fire and produces targeted drops of containers and their detonation.

The helicopter carries at least one container and the operator (gunner) in the helicopter ensures the initiation of spraying at a given height from 5m to 30m from a container on a sling or sighting dropped from a helicopter.

The advantages of the proposed invention. For the first time, in one flight, the possibility of multiple spraying and extinguishing of many local foci of a forest fire or successive extinguishing of foci or multiple, combined, square-nested area impact on a complex focus or extensive forest fire is provided. Another important advantage lies in the flexibly adjustable, combined, extinguishing by means of consistent, at predetermined intervals, precise spraying from various containers of a number of OS and environmentally friendly natural materials: - bulk materials - sand, sandy loam, loose soil, mud; viscous, sticky - dirt, gel, sorbents, thickened water; liquid - water, water with a foaming agent, "dirty" water with impurities, fire extinguishing powders.

Equipping spray containers with natural materials at the landing site provides for the first time autonomous, uninterrupted extinguishing, regardless of the supply or reserves of fire extinguishing agents.

Provides fast, effective fire extinguishing and protection in the absence of people in hazardous areas by a complex of damaging factors, and hard-to-reach areas at a distance from bases and terrain.

Claims (2)

1. An aviation fire-extinguishing container containing a container made of a thermoplastic polymer material, a fire-extinguishing agent and a spray charge, characterized in that the container is made of a drop-like shape from at least two parts of different strength: the upper part from above has the shape of a cylinder, smoothly turning into a truncated cone, and a convex lower part made in the form of a folding hemisphere with a wall thickness of 1.5–2 times less than the upper part of the container, and the angle of the truncated cone coincides with the solid angle of directional spraying, in addition, a lid is fixed to the upper cylindrical part of the container, in in the lower part of which there is a sealed cartridge containing a spray charge and an initiating cord; in the upper part of the lid there are a valve for pouring a fire-extinguishing mixture and a tube for leading out an initiating cord, which is included in the coupling, into which at least one electric detonator is inserted before lifting the helicopter. 2. An aviation fire-extinguishing container according to claim 1, characterized in that a dam with a high specific gravity is located in the inner space of the lid, enclosed in a separate hermetically sealed shell made of an elastic film.

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