SU1417888A1 - Fire-extinguisher - Google Patents

Abstract

The invention relates to fire fighting equipment, in particular, to devices with a combined fire extinguishing composition consisting of liquids of different densities, and makes it possible to increase the efficiency of fire extinguishing due to automatic change of extinguishing regimes. The fire extinguisher consists of a housing 1, the lower part 2 of which is filled with an extinguishing fluid

Description

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a bone with a high density, such as chladone, and the upper part 3 is connected to a balloon 4 for compressed gas. The housing 1 is closed by a lid 5 with a siphon attached to it, made in the form of a three-stage nipple 6 with a diameter decreasing to the bottom 7. The siphon has an outlet 8 hole and an inlet 9 hole, made in its face part facing the bottom 7 of the housing 1. In addition, the three-stage pipe 6 has a calibrated inlet on the end surface of the middle stage and an additional calibrated inlet on the end surface of the larger stage. Between

the lower 2 and upper 3 parts of the housing 1 has a cavity 12 for accommodating a low-density fire extinguishing fluid, for example, a frother. The fire extinguisher is equipped with float-covering floats 13 and 14, the Float 14 is designed with the possibility of buoyancy in a fire extinguishing fluid of greater density and is mounted on the lower stage of the siphon. The calibrated inlets are made with the possibility of blocking them with floats 13 and 14, which are fixed on a three-stage pipe 6 with locking projections 15 and 16. Elastic gaskets are fixed on the floats 13, 14. 7 il.

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The invention relates to fire fighting equipment, in particular, to devices with a combined fire extinguishing composition consisting of fluids of various densities and providing automatic transition from a continuous jet to a foam type jet.

- The circuit of the invention - increasing the efficiency of extinguishing a fire due to the automatic change of the extinguishing modes at certain intervals of time of the fire extinguisher.

Fig. 1 schematically shows a fire extinguisher at the time of jet flow of freon; in fig. 2 - the same, at the moment of jet outflow of the emulsion of freon in the solution of the frother; in fig. 3 - the same, at the time of expiration of the freon foam; in fig. 4 - the same, at the time of the expiration of the foam without the addition of refrigerant; fig. 5 shows the node I in FIG. one; in fig. 6 — node II in FIG. 2; in fig. 7 - node III on. FIG. 3 ..

The fire extinguisher consists of a housing 1, the lower part 2 of which is filled with a high-density extinguishing fluid, such as freon, and the upper part 3 is connected to a balloon 4 for compressed gas. The housing is closed by a lid 5 with a siphon attached thereto, made in the form of a three-stage nipple 6 with a decrease to the bottom 7

diameter of steps. Siphon has you-. an opening 8 and an inlet 9, made in its front part (not marked) facing

 to the bottom 7 of the housing 1. In addition,

The three-stage nozzle 6 has a calibrated inlet 10 (or several openings), which is made on the end surface of the middle

stage (not indicated) of the three-stage nozzle 6, and an additional calibrated inlet 11 (or several holes), filled on the end surface of the larger stage (not indicated) three-step. chilled pipe 6. Case 1 comprises a cavity 12 arranged between the lower 2 and the upper 3 parts to accommodate a low-density extinguishing fluid, such as a frother. The fire extinguisher is equipped with two floats 13 and 14 that cover the siphon, Float 14 is made with the possibility of buoyancy in a fire extinguishing fluid of high density and is installed at the bottom of the siphon. The calibrated inlets 10 and 11 are made with the possibility of hermetically sealing them with the corresponding floats 13 and 14. The floats 13 and 14 are fixed on the three-stage nozzle 6 with locking projections (shoulders) 15 and 16. On the floats

13 and 14 fixed elastic pads 1 7.

The fire extinguisher operates as follows.

Before use, the housing 1 is filled with a combined fire extinguisher I

composition, such as freon and frother solution. In the initial state, the floats 13 and 14 hermetically overlap the calibrated inlets 10 and 11 at the ends of the steps and with the help of elastic pads 17 fixed to the floats. A starting device (not indicated) compressed gas from a cylinder 4 is fed to the upper part 3 of the housing 1 of a charged fire extinguisher. The pressure of the compressed gas freon enters the siphon 6 through the inlet holes 9 (Fig. 1 and 5) steps of smaller diameter. Through the outlet, 8 refrigerant is thrown onto the fire in the form of a jet. The fire extinguishing mode change occurs at the moment when the freon level drops below the additional calibrated inlet holes 11 (Fig. 2 and 6). At this point, the float 14 descends along with the level of freon and opens additional calibrated inlets 11 through which the frother solution enters the medium diameter core, where it mixes with the freon, entering through a smaller diameter stage 9 inlets. Formed with the mixture through the hole 8 is thrown onto the fire in the form of a jet. When the frother solution solution level drops below the calibrated inlet holes 10 (Fig. 3 and 7), the float 13 is lowered, and the gas is compressed through the calibrated inlet holes 10 enters a larger diameter stage, where it mixes with the frother solution and refrigerant, which continue to flow into the siphon through the inlets. The transition to the third mode of extinguishing and formed as a result of the mixing of the three initial components, freon, foaming agent solution and compressed gas, freon froth is thrown onto the fire in the form of a jet. The transition to the fourth mode of extinguishing is carried out after complete removal of the freon from the housing 1 - (Fig. 4). The foaming solution enters already through the inlet holes of 9 steps of smaller diameter.

and compressed gas through calibrated inlets 10 and 11 at the ends of the steps of the three-stage pipe 6.

The resulting foam is discharged onto the fire in the form of a jet. Floats 13 and 14 are fixed on restrictive shoulders 15 and 16.

The proposed design of the fire extinguisher allows the use of a combined fire extinguishing composition and provides an automatic change of fire extinguishing after a certain interval,

The operating time of the fire extinguisher, which significantly increases the effectiveness of extinguishing the fire. In addition, the replacement of the part of the fire extinguishing composition - refrigeration. at a cheaper and easier solution

The frother allows to significantly reduce the total COST and the weight of the fire. neotititel while improving its performance.

Formula of the invention.

A fire extinguisher consisting of a body, the lower part of which is filled with a fire extinguishing fluid with a higher density, and the upper part is connected to

a cylinder of compressed gas attached to the siphon cover with an injection hole and an inlet hole made in the end part of the siphon facing the bottom of the body and a calibrated inlet hole filled in the siphon between the surface of the fire extinguishing fluid with a higher density and the lower edge of the siphon, the fact that, in order to increase the efficiency of extinguishing

due to the automatic change of fire extinguishing, it contains a cavity placed between the lower and upper parts of the body to accommodate the fire extinguishing

liquids with a lower density and equipped with two floats, covering a siphon, one of which is designed with the possibility of buoyancy in a fire extinguishing fluid of greater density. With

This siphon is made in the form of a three-stage nozzle with a step diameter decreasing to the bottom and with an additional calibrated inlet, the calibrated inlets being made on the end surfaces of the corresponding steps of the siphon with the possibility of hermetically sealing off with their respective floats.

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Claims (1)

Claim. A fire extinguisher consisting of a casing, the lower part of which is filled with a fire-extinguishing liquid with a higher density, and the upper part is connected to a compressed gas cylinder attached to the siphon cover with an outlet and an inlet made in the end part of the siphon facing the bottom of the casing and calibrated inlet the hole made in the siphon between the surface of the fire extinguishing liquid with a higher density and the lower edge of the siphon, characterized in that, in order to increase the efficiency of quenching due to automatic changes extinguishing modes, it contains a cavity located between the lower and upper parts of the body for placing a fire extinguishing liquid with a lower density and is equipped with two floats covering a siphon, one of which is made with the possibility of buoyancy in a fire extinguishing liquid of a higher density. the diameter of the steps decreasing to the bottom and with an additional calibrated inlet, and the calibrated inlets are made on the end surfaces of the corresponding st fines siphon to sealingly overlap of their respective floats. FIG. 5 FIG. 6