SU1316688A1 - Gas generating device for flame-explosion suppressor - Google Patents

Abstract

The invention relates to fire fighting equipment, in particular to automatic fire extinguishing and explosion suppression systems, and improves the efficiency and reliability of the gas-generating device of the flame of an explosive suppressor by stabilizing the operating parameters of the device when the external conditions change. The device contains a combustion chamber 1 in which a gas-generating unit is installed, its charge 5 in the form of a roll tape of a nitrocellulose-based composition. The charge 5 is separated from the outlet 6 by the helical spring 7. With the aid of the actuator 8 and the pin 9, the spring 7 is compressed with decreasing or expanding with increasing ambient temperature. This provides a change in the gap area for the passage of the combustion products of charge 5, leading to a stabilization of the intracameral pressure and the response time of the gas-generating device. The charge may be located inside the conical coil spring, and the device’s outlet openings are spring clearances. I zp f-ly, 4 Il. i SL 10 00 O5 O5 oo oo

Description

{obregnois refers to fire-fighting gs. them, in particular, to automatic fire extinguishing systems, and can be used in the design of gas-generators; ; |) 1x1 flame devices explode ..

The purpose of the invention is to increase the efficiency and reliability of the gas-generating device by depleting the stabilization of operating parameters when external conditions change.

FIG. 1 shows gas-generating, its structure, longitudinal section, the first embodiment; in fig. 2 - the same, the second embodiment; in fig. 3 is a section A-A in FIG. one; in fig. 4 is a section BB in FIG. 2

The device made in the first embodiment contains a cylindrical combustion chamber 1 formed by a housing 2, non-random 3 and a rear 4 days. Gas-generating charge 5 from a nitrocellulose-based compound, made in the form of a roll tape, located coaxially with the combustion chamber 1, is placed in the combustion chamber 1. In the rear bottom 4, the outlet 6 for the combustion products of the gas-generating charge 5 is made. Coaxially with the combustion chamber 1 but the entire length of the last obstacle, the diaphragm made in the form of a helical spring 7 with an emphasis on the bottom bottom 4. The spring 7 is connected with a screw drive its axial deformation. The drive contains a screw 8, which forms a threaded connection with a hole on the non-irregular bottom 3 and is fastened to the fifth 9, mounted on the end of the spring 7.

In the inner cavity of the front day, Hia 3 Y., the igniter 10 is displaced, and on the outer cavity, pyro cartridge II, electrically connected with the automatic current of fire or explosion.

A device made according to the second variant comprises a conic chamber 1 of the shampoo, the body 2 of which is made of MiiiM, for example, of paper, and separates the combustion chamber 1 from the flame-retardant flame container. Chamber 1 of combustion from the ends is limited to the front 3 and rear 4 bottoms. Inside the combustion chamber, a gas engine is installed :-) i (chateryu1, ny charge 5. The output of the gas-generating device are the gaps between the turns of the conical helical spring 7. The drive of the deformation of the spring-air 7 includes screw connection 8, rigidly fastened to the fifth point 9, mounted on the end of the spring 7 and the floor of the rear axle function 4.

The igniter 10 and the nironatron 11 attached to the front plate 3 are identical to the nerve variant.

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Gas-generating device, made by both versions, works as follows.

When a signal from an automatic fire ignition or explosion is triggered, a squib 11 is ignited, which ignites the igniter 10 and the gas-generating charge 5. The charge 5 combustion products enter through the gaps of the spring 7 and the outlets 6 into the flame suppressor flame body, releasing the exhausting composition on the protected object. The axial deformation of the spring 7 when turning the screw 8 (the first option) or the nut (the second option) relative to the screw 8 drives the axial movement of the pin 9 and, increasing or decreasing the gaps between the coils of the spring 7 and thereby variable for the passage of the combustion products of the gas-generating charge yes 5 and change in the mode parameters of the gas-generating device.

The proposed device provides for increased efficiency and reliability due to the achievement of stabilization of operating parameters when conditions change. Changing the spring gaps by means of a drive for its deformation is capable of stabilizing the intracameral pressure in the gas generating device. At the same time, the reliability of operation of the gas-generating device in the range of the ambient temperature from 50.40 is new. which makes it possible to use the same design of the gas-heaving device of an explosive suppressor to protect objects that are located in different and non-temporary environment conditions.

Claims (2)

1. A gas-breathing device, the plasma-explosion suppressor, containing a combustion chamber with a gas-generating charge and a diaphragm, characterized in that, the diaphragm is made in the form of a helical spring, installed to ensure the efficiency and reliability of operating conditions. along the entire length of the combustion chamber and provided with a drive for its axial deformation. 2. A device according to claim I, characterized in that the gas-generating charge is made in the form of a tape of a composition based on nitrocellulose laid in a roll coaxially with a combustion meter. 6 - 7 four / 3 FC 2.1 Fig.Z