SU995814A1 - Fire extinguisher - Google Patents

Description

(54) FIREPRESSER

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FIELD OF THE INVENTION The invention relates to fire fighting equipment, and in particular to devices designed to 1.1 for extinguishing fires in underground mines.

A fire extinguisher is known that contains a projectile with a fire extinguishing agent, in the body of which a plug with an opening and a delivery device ll is installed. . The disadvantages of this fire extinguisher, the range of casting, limited by the height of the mine, does not exceed 10-15 m, limited (not more than 0,300-0,500 kgf) content of fire-extinguishing matter in the fire extinguisher, the presence of explosive that makes it dangerous in operation .- -j

 The purpose of the invention is to increase the efficiency of extinguishing and safety in operation. :

The goal is achieved in a fire extinguisher containing a projectile: With a fire extinguishing agent, in the case of which there is a plug with an opening and delivery system, the projectile has a brother valve installed in the opening of the plug and an exhaust device consisting of a cylindrical cup, one torren which is damped by a low-melting alloy, and having a thermoelectric element.

FIG. 1 shows a fire extinguisher: FIG. 2 - snd d with a fire extinguishing 5 substance.

The fire extinguisher consists of a projectile having a body 1 submerged by a fire extinguishing agent with a flange 2, on which

, - a plug with a check valve 3 is installed. In the head part of the housing 1 there is a hole 4 in which the cylindrical cup 5 is fixed. There is an thermoelectric element 7 placed on the inside of the cylindrical steel 15 of the canal 5. its end is plugged with a rubber stopper 8. The projectile delivery device consists of a cartridge “Hydrox 9” in which, instead of the discharge head, there is a sleeve 10, which forms a gas chamber 11 and a barrel 12 mounted on the sleeve 10. Between the sleeve 10 and the body is Pat 9 is installed shear diaphragm 13. In addition, a cap with obratny.m k Tapan 3 has protective tabs 14,

which prevent the shear membrane from blocking the opening of the valve 3.

The fire extinguisher works as follows.

From an explosive device, for example, KVP-1/100 (not shown), an electric impulse is applied to launch the cartridge "Hydrox 9 and thermoelectric element ETE-62 7. After starting the cartridge 9, the pressure upstream of the shear membrane 13 increases to 1000 kgf / cm, at which is destroyed and the gases rush into the chamber 11 and through the non-return valve 3 enter the interior of the housing 1 and the fire extinguishing agent is transferred, for example, the refrigerant IHBj is in the vapor state. When a pressure of 1200 kgf / cm is reached in the gas chamber 11, flange 2 is cut and the shot 1 is ejected from barrel 12 at a speed of 70-90 m / s to the center of fire. Simultaneously with the operation of the charge, the Hydrox thermoelectric element ETE-62 7 in the cylindrical cup 5 is heated to 700-800 ° C, the low-melting alloy 6 begins to melt, the layer thickness of which is selected taking into account the time of projectile ejection from the delivery vehicle to the fire center. Thermoelectric element 7 is turned on simultaneously with the supply of a current pulse to the cartridge "Hydrox" and automatically turns off after the start of movement of the projectile 1. Under the influence of high gas pressure inside the projectile 1 (400-600 kgf / cm) through the opening 4

there is a rapid release of gaseous freon in the fire.

With a useful volume of one projectile of 3-4 liters, the effective extinguishing area is 10-12 m, since for extinguishing

fire on the length of production of 20-25 m is enough 4-5 shells. Snar d is safe in operation, as it does not contain an explosive inside, and does not burst in the fire. Activating the refrigerant inside the projectile with the hot gases of the cartridge “Hydrox increases its efficiency, and the delivery vehicle can eject the projectile in the mine workings for a distance of 100-150 m.

Claims (1)

Invention Formula A fire extinguisher containing a fire extinguishing agent, in the case of which a plug with an opening is installed, and a delivery vehicle, characterized in that, in order to increase the efficiency of the process and the safety of operation, the shield has a check valve installed in the opening of the plug, and an exhaust device consisting of a cylindrical cup, one end of which is plugged with a low-melting alloy, and having a thermoelectric element. Sources of information taken into account in the examination I. US Patent No. 3980139, cl. 169-28, 1976.