Airborne fire-extinguishing device

FIELD: fire-fighting equipment, particularly to combat large-scale fires, including forest and steppe ones, fires in difficult-to-access areas (steep mountains, impassible taiga, jungle) and fire sites located near high-risk objects (highly explosive or high-temperature ones).

SUBSTANCE: device comprises stabilizer and vessel, both formed of thermoplastic material, as well as dispersing charge and fire-extinguishing substance located into vessel. The device also has explosive means and suspension system including cover plate with eyes and members enclosing vessel. Suspension system is connected with stabilizer bottom by means of flexible tie and is provided with releasing mechanism and with members providing forced detaching thereof from vessel.

EFFECT: prevention of scattering fragments of fire-extinguishing device after its operation, increased surface of fire-extinguishing substance contact with burning matter.

4 cl, 3 dwg

 

The invention relates to fire fighting, and more specifically concerns a device for localization and/or fire, and can be used for effective control of large-scale and powerful fires, including forest and forest-steppe, and fires that occur in remote places as geographically (steep mountains, impassable taiga, jungle), and because of the proximity of hazards (explosions, high temperature).

A device for localizing and extinguishing fires in places difficult to reach geographically or because of the proximity of the source of danger (France, application No. 2643820 And 62 With 3/02, 1990).

The known device called a water bomb, intended for transportation by aircraft and heavy-lift helicopters and dropping on fires. Water bomb is characterized by the presence of a cylindrical tank made of thin steel sheet with holes for filling the fire-extinguishing liquid and air outlet, with all the side walls of the incisions until the middle of the thickness of the metal. As the fire-extinguishing filler can be used water, the wetting liquid and carbon dioxide. Dropping water bombs it explodes upon contact with the ground thanks to the pre-weakened areas in the metal, and which allows the fire extinguishing fluid to spill out onto the hearth of the fire.

The disadvantage of this paropamisadae device is a high probability of premature rupture of the cylindrical tank from hitting an obstacle placed before the fire area, which reduces the efficiency of fire.

In addition, the disadvantages of this device are as follows:

- formation of the fragmentation of the field of the material of the cylindrical tank;

- uneven distribution of the fire extinguishing composition after rupture of the membranes;

- a small area of impact of extinguishing agent to the fire.

Known paropamisadae the device according to the patent of Russian Federation №2111032, 6 And 62 With 3/02, taken as the closest analogue containing a tank of compressed cardboard, dispersing the charge block stabilizer and a fuse device in the form of a height sensor and/or contact sensor with the initiators of the explosion.

In the case of using the helicopter as a means of delivery device according to patent No. 2111032 should be placed in a special container suspended under the bottom of the helicopter, and fixed by the lock releasing device according to the reset signal.

The disadvantages of this device are as follows:

- impossibility of using airplanes and helicopters of army aviation, equipped beamed holders for hanging goods as a means of access is where it is refuelled, because the design of the device does not have a suspension system under the beam holder;

- low coefficient of payload due to the necessity of placing the device in a special container which is hooked under the bottom air delivery means on the rope;

- high complexity of manufacture of the device due to the additional production of the container and applying a waterproof coating on the elements of the tank and regulator.

Object of the present invention is to improve the effectiveness and safety of fire when using air extinguishing media.

The technical result consists in the exclusion of the fragmentation of the field when triggered aircraft fire while increasing the contact surface of the fire extinguishing composition of the burning material.

The technical result is achieved by the fact that the aviation extinguishing agent includes made of a thermoplastic material, a stabilizer and capacity in the cavity which posted by dispersing the charge and fire extinguishing composition, a fuse device and the harness in the form of plates with lugs and elements, spanning capacity, while the suspension system is connected with a flexible coupling with the bottom of the stabilizer with the coupler and the elements of forced separation from the flask.

As soon as the aircraft fire extinguishing is achieved exception fragmentation of the field due to:

- supply suspension system of the tripping mechanism, which when triggered on the trajectory of Autonomous flight aviation extinguishing media provides the removal of the communication "building capacity - suspension system";

- supply suspension system elements forced separation from containers to create it additional speed relative to the speed of movement capacity;

- link suspension system with a flexible coupling with the bottom of the stabilizer, which prevents Autonomous flight and at the same time, removes it from the zone of action of the dispersing charge;

- run (like the prototype) hulls of the vessel, dispersing the charge and the stabilizer of a thermoplastic material.

The increase in the contact surface of the fire extinguishing composition of the burning material is achieved by the output from the zone of action of the dispersing charge suspension system that allows you to create a fine cloud of fire extinguishing composition in the form of a torus with a given diameter and height.

The mechanism of attachment of the harness aviation extinguishing media can be made in the form of a sleeve with two longitudinal channels, one of which has two spring-loaded Porsche is I with rods, the other core element of a slowdown, and channels are closed with the ends and are connected with the formation of cells, and each piston rod movably connected to one of the elements of the suspension system covering capacity.

Specified the design of the mechanism unlocking allows to provide:

security delivery means when the reset aviation extinguishing media by eliminating the possibility of collision suspension system with elements of the design means of delivery;

- increased reliability branch of the suspension system from the tank due to the simultaneous disclosure of the elements of the suspension system covering capacity;

- conclusion fastener elements, covering the capacity of the coverage area of the dispersing charge (excludes their participation in the formation of the fragmentation of the field when triggered aviation fire extinguishers);

- installation of suspension system capacity aircraft fire in the factory and in the field.

The elements of forced segregation suspension system from the tank aircraft extinguishing media can be in the form of leaf springs, which will greatly simplify the design of the suspension system and to ensure the high reliability of its separation from the container.

Elements, covering the technology can be implemented in the form of two hoops, spaced along the longitudinal axis and movably connected to the pad suspension system.

Figure 1 shows the aircraft extinguishing agent.

Figure 2 shows a suspension system with elements of forced segregation.

Figure 3 shows the mechanism of attachment of the harness.

Aviation fire extinguishing means includes a tank 1 with a fire extinguishing agents 2 and dispersing charge 3, a fuse device 4, the stabilizer 5, the suspension system as items 6, covering the capacity of the lining 7, two Ushkov 8. The suspension system is connected with a flexible coupling 9 with the bottom of the stabilizer 5 and provided with a tripping mechanism 10 and the elements of forced division 11 of the container 1.

The mechanism of the coupler 10 includes a sleeve 12 with two longitudinal channels 13 and 14, two spring-loaded piston 15 with the rod 16, the camera 17, the gas generator 18 with elements of slowing.

Elements 6, covering the container 1,are connected by fasteners 19.

Aviation extinguishing agent when you reset it with the carriers, are equipped with the standard beam holders of goods, works as follows.

At the command of the pilot signal on actuation of the lock beam holder of the goods.

After actuation of the lock ears 8 suspension system disengage and extinguishing agent under the action of gravity atelaes is from the media, when this pulse of electric current through the rail transport of momentum media is fed to the igniter fuse device 4 and the gas generator 18.

Intervals of time fuzing device 4 ready for action and activates the gas generator 18. The powder gases of the gas generator 18 through the channel 13 of the sleeve 12 are received in the chamber 17. Under the action of the powder gases of the piston 15 with the rod 16 move towards each other. The rods out of the hole fasteners 19 connecting elements 6, freeing the link suspension system with a capacity of 1.

Suspension system with springs 11 and the incident flow moves over the bottom of the stabilizer 5 and continues to move on the flexible connection 9 together with the extinguishing agent.

At a meeting of the aviation fire extinguishers with soil or foliage of trees) triggered a fuse device 4, a detonation impulse which directly or through a gear explosive charge involves dispersing the charge 3.

The resulting actuation of dispersive charge detonation wave and the products of the explosion increases the pressure in the vessel volume 1 in hundreds of thousands of times, which leads to the destruction of the tank and throwing fire extinguishing composition 2. During the movement of the fire extinguishing composition is broken up into droplets size in the number of tens of microns, that increases the surface interaction of the composition with the burning material. The extension products of the explosion of the dispersing charge 3 causes the formation of air shock wave, which travels at supersonic speed ahead of the cloud of fire extinguishing composition. The mechanism of quenching is simultaneously exposed to the fire of the air waves, the velocity head and the fire extinguishing composition. The first two factors bring down the flame and remove the burning material, and the fire extinguishing composition cools pockets and isolates the burning material, stopping the pyrolysis and heating of the environment.

Aviation extinguishing agent can be used with media that are not equipped beamed holders cargo (civil aviation), thus instead of a suspension system is used, for example, hanging the container described in patent RF №2111032.

1. Aviation extinguishing agent containing made of a thermoplastic material, a stabilizer and capacity in the cavity which posted by dispersing the charge and fire extinguishing composition, a fuse device and the harness in the form of plates with lugs and elements, spanning capacity, while the suspension system is connected with a flexible coupling with the bottom of the stabilizer with the coupler and the elements of forced separation from the container.

2. Aviation tool after which otusanya according to claim 1, characterized in that the tripping mechanism is made in the form of a sleeve with two longitudinal channels, one of which has two spring-loaded piston with a rod, the other gasifier element deceleration, and channels are closed with the ends and are connected with the formation of cells, and each piston rod movably connected to one of the elements covering capacity.

3. Aviation extinguishing agent according to claim 1, characterized in that the elements of forced segregation suspension system from the tank is made in the form of leaf springs.

4. Aviation extinguishing agent according to claim 1, characterized in that the elements covering capacity, made in the form of two hoops, spaced along the longitudinal axis and movably connected to the pad suspension system.



 

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