SU1602554A1 - Fire-extinguisher - Google Patents

Abstract

The invention relates to fire fighting equipment and can be used in the fire extinguishing systems of aircraft and other objects of the national economy. The purpose of the invention is to increase the effectiveness of a fire extinguisher when extinguishing a fire with an extinguishing agent comprising two immiscible liquids of different densities. The fire extinguisher consists of a cylinder 1, in the upper part of which a charge-safety device 2 with a pressure indicator 3 is installed, and in the neck 4 located in the lower part of the cylinder 1 a stop-starting device 5 with a valve 6 and a spool 7 with a through internal channel is placed . In the upper part of spool 7 there are windows, and in the lower part, tide 8 with axial tangentially located openings. The space between the lower cut of the tide 8 of the spool 7 and the valve 6 forms a cavity, which, when the fire extinguisher operates, acts as a mixing chamber. The windows in the charged fire extinguisher are blocked by a float 9. When the locking-starting device 5 is turned on, the valve 6 opens. The fire extinguisher charge rushes out. The lower fluid, having a higher density, is directed along axially tangentially located openings, and the upper one, which has a lower density, is directed along the internal channel. The flow of the lower fluid is twisted, which ensures the mixing of the flows in the chamber when they are combined. As the level of the upper fluid approaches, when the fire extinguisher is discharged to the upper edge of the spool 7, the float 9 is lowered under its own weight, opening all windows B through which the flow of the upper fluid from that moment will flow into the spool A. 1 il.

Description

TD11T

The invention relates to fire fighting equipment and can be used in the fire extinguishing systems of aircraft and other objects of the national economy.

The aim of the invention is to increase the efficiency of the fire extinguisher.

The drawing shows a fire extinguisher.

The fire extinguisher consists of a cylinder 1, in the upper part of which a safety valve 2 is installed with a pressure indicator 3, and a shut-off device 5 with a valve 6 and a valve 7 with a through valve are placed in the neck 4 located in the lower part of the cylinder I. The internal channel A. In the upper part of spool 7 there are windows, and in the lower tide 8 with axial tangentially located channels. The space between the lower cut of the tide 8 of the spool 7 and the valve 6 forms a cavity, which, when the fire extinguisher operates, acts as a mixing chamber. The windows in the charged fire extinguisher are blocked by a float 9, the ratio of the channel area to the total area of the axial tangential openings being equal to the ratio of the volumes of liquids in the charge. To fulfill its functional purpose, it is necessary that the float valve has a bulk density greater than the density of the upper liquid, but not more than the density of the lower liquid.

The fire extinguisher works as follows.

When the locking device 5 is turned on, the valve 6 opens. The fire extinguisher charge rushes out. The lower fluid, having a higher density, is directed along axially tangentially located openings, and the upper fluid, having a lower density, is directed along the internal channel. The flow of the lower fluid is twisted, which ensures the mixing of the flows in the chamber when they are combined. As the level of the upper fluid approaches when the fire extinguisher discharges to the upper edge of the spool 7, the float 9

it is lowered under its own weight, opening windows through which the flow of the upper liquid will flow from now to the channel of the spool 7. This ensures constancy of the composition of the stream displaced from the fire extinguisher. Due to the fact that

the ratio of the areas of the spool channel to the total area of the axial tangentially located holes is chosen to be equal to the ratio of the volumes of liquids in charge, the outflow of both liquids from the fire extinguisher ends simultaneously.

Claims (1)

Invention Formula A fire extinguisher comprising a housing filled with liquid fire extinguishing compositions of various densities, an exhaust head, a shut-off device, a charge-safety device and a float valve, characterized in that, in order to increase the efficiency of the fire extinguisher, the exhaust head is located in the bottom of the housing, and the locking-starting device is installed in the head and has a valve and a valve with a through internal channel, in the upper part of the valve there are windows, and in the lower part there is a tide with axial tangentially arranged channels, and the float is made in the form of a covering valve in the upper part of the sleeve, while the lower cut of the valve and the locking-starting device is formed by a mixing chamber, and the area ratio the through channel of the spool and the total area of axial tangentially located channels is equal to the ratio of the volumes of liquids in the charge and the volume density of the float is greater than the density of the lighter fire extinguishing liquid.