SU1294350A1 - Fire barrier - Google Patents

Abstract

The invention relates to fire fighting equipment and allows to increase the reliability of operation of fire arresters. The fire extinguisher ensures the elimination of combustion without slipping the flame, stopping and resuming the flow of the combustible mixture of additional labor costs. A new cone in the flame arrester is that a conical mounting 7 is installed at the end of the tank for the flame-retarding liquid, in the smaller base of which a stop ball 8 is placed, the conical nozzle is made perforated and the ball is connected by a rigid connection 9 to the relief valve 10, 1 il. / locadiyi iJMHfHU 3 ate tc with 4i 00 SP Pa

Description

1 12

FIELD OF THE INVENTION The invention relates to fire fighting equipment, in particular, to devices for preventing flame spread in pipelines.

The aim of the invention is to increase the reliability of the fire arresters.

The drawing shows a fire suppressor, a general view.

The arrester includes a housing 1 with an inlet 2 and an outlet 3 for the passage of gas. In the entrance part of the fireproofing device, there is a fire-proofing nozzle 4.

On the gas path, a partition 5 is installed with a means for supplying the extinguishing liquid to the fire trapping nozzle, which contains containers with a flame extinguishing liquid 6. Each of the tanks below ends with a truncated conical perforated nozzle 7, on a smaller base of which a stop ball 8 is placed, having a rigid connection 9 with a bypass valve 10.

Flame arrestor work t as follows.

The combustible gas mixture passes through the inlet 2, the fire-blocking nozzle 4, through the annular channel formed by the saddle 11 and the stem 12 of the relief valve 10, through the radial channels 13 and the outlet 3 (the path is shown by solid arrows).

In the event of a flame, it passes in the opposite direction to the gas flow and sits on the fire-blocking nozzle 4.

The mixture burns on nozzle 4, while the volume of combustion products is 7 to 10 times the amount of incoming feed mixture, the flow rate of gas in the annular channel increases, which leads to the creation of an overpressure in the area between the partition 5 and the fire-converting nozzle 4. Due to the pressure difference the bypass valve 10 moves in the axial direction and

,

Editor S.Pekar

Compiled by N.Goldobin Tehred M. Khodanych

409/3

Circulation 430. Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

ten

15

five

35

20

25

thirty

40

45

blocks the release of combustion products; at the same time, the ball moves upwards, opening a channel for the passage of liquid from the container to the perforated nozzles 7, and from there to the fire-blocking nozzle 4 and extinguishes the flame.

To prevent the flame arresting from deforming when valve 10 is closed with further increase in pressure due to fresh mixture, a safety valve 14 is provided, which rises at a certain pressure (the gas path is indicated by dotted arrows).

The use of a flame arrester allows, without a special energy source, to move the shut-off valve and supply water automatically when a flame appears, stop the flow of the combustible mixture, eliminate burning, resume the flow of the combustible mixture after the flame is attenuated without maintenance personnel. In the fire suppressor, not all of the extinguishing liquid is consumed at once, but in parts, which saves energy costs. In addition, the proposed flame arrester remains in working condition permanently and is capable of multiple action.

The use of a flame arrestor increases the level of fire extinguishing.

Claims (1)

Claims of the invention: An arrester comprising a housing with inlet and outlet nozzles, a fire-blocking nozzle, a partition with a relief valve and means for supplying the fire-extinguishing Fluid to the fire-blocking nozzle, in order to improve reliability. work, the fire extinguishing fluid supply means contains a truncated conical perforated nozzles and a locking ball rigidly connected with the bypass valve, while this locking ball is installed in the smaller base of the conical nozzle. Proofreader M.Samborsk