SU803941A1

SU803941A1 - Method of obtaining air-mechanical foam for extinguishing fires

Info

Publication number: SU803941A1
Application number: SU782634086A
Authority: SU
Inventors: Анатолий Иванович Козлюк; Виктор Павлович Чарков; Геннадий Моисеевич Шецер; Геннадий Григорьевич Кощеев; Михаил Ефимович Краснянский; Владислав Павлович Засевский; Олег Леонидович Кокотов
Original assignee: Всесоюзный Научно-Исследовательскийинститут Горноспасательного Дела
Priority date: 1978-05-10
Filing date: 1978-05-10
Publication date: 1981-02-15

Description

Изобретение относится к противопожарной технике, а именно к способам , тушения пожаров воздушно-механической пеной, и может быть использовано, преимущественно, для тушения пожаров в горных выработках, а также (в поверхностных зданиях и сооружениях.The invention relates to fire fighting equipment, and in particular to methods for extinguishing fires with air-mechanical foam, and can be used mainly to extinguish fires in mine workings, as well as (in surface buildings and structures.

Известен способ получения воздушно- механической пены для тушения пожаров путем . смешивания воздуха с раствором пенообразователя (1].A known method of producing air-mechanical foam for extinguishing fires by. mixing air with a foaming solution (1].

Однако такая пена при подаче на очаг пожара разрушается л .выделяет воздух, кислород которого.поддерживает,горение, что снижает эффективность тушения пожара.However, such foam, when supplied to the fire site, is destroyed. It releases air, the oxygen of which supports combustion, which reduces the efficiency of extinguishing the fire.

Цепь изобретения - повышение эффективности тушения.The chain of invention is an increase in quenching efficiency.

Эта цепь достигается тем, что в воздух предварительно вводят I огнегасительный порошок.This circuit is achieved by first introducing I extinguishing powder into the air.

На чертеже изображена схема реализации предлагаемого способа получения воздушно- Механической пены.The drawing shows a diagram of the implementation of the proposed method for producing air-mechanical foam.

Способ/ осуществляют .следующим образом.The method / is carried out as follows.

В поток воздуха распылителем 1 вводят огнегасительный порошок.An extinguishing powder is introduced into the air stream with a spray gun 1.

Двухфазный поток (газ4-твердые, частицы) поступает на пеногенераторную сетку 2, смачиваемую раствором пенообразователя при помощи распылителя 3. В результате на сетке 2 получается пена, которая подается на очг пожара и тушит его.A two-phase flow (gas4-solid, particles) enters the foam generator grid 2, wetted by the foaming agent solution using a spray gun 3. As a result, foam is produced on the grid 2, which is supplied to the fire and extinguishes it.

Благодаря такому решению внутри пузырьков пены находится огкегасительный порошок во взвешенном состоянии. При попадания пены в зону нагретых пожаром боковых пород, она разрушается. Впереди движения пенного потока создается облако огне тушащего порошка, которое ингибирует пламенную фазу горения путем разрыва цепей химических превращений реакции горения за счет влияния на активные центры и радНкалы, что позволяет повысить эффективность тушения.Thanks to this solution, the extinguishing powder is in suspension in the foam bubbles. If foam enters the zone of side rocks heated by the fire, it is destroyed. Ahead of the movement of the foam stream, a cloud of fire extinguishing powder is created, which inhibits the flame phase of combustion by breaking the chains of chemical transformations of the combustion reaction due to the effect on active centers and radNkala, which allows to increase the efficiency of extinguishing.

Claims

The invention relates to fire fighting equipment, and it is called self-propelled fire extinguishing with air-mechanical foam, and can be used, in advance, to extinguish fires in mining workings, as well as in surface constructions. Shtsit “YUS00. obtaining air-mechanical foam to extinguish fires by. mixing air with a solution of body foam 1. However, such a pope, when iodine, that hotbed of fire, is destroyed due to air, the oxygen of which maintains heat, which reduces the efficiency of fire extinguishing. The chain of invention is all-effective effecting. This goal is achieved by preliminarily introducing a fire extinguishing shock into the air. The drawing shows a diagram of the implementation of the proposed method of obtaining. Mechanical foam. The method is reported as follows. Fire extinguishing powder is introduced into the air stream with a spray 1. The two-phase flow (gaseous solids) goes to the foam grid 2 wetted by the foaming solution using spray 3. As a result, foam 2 is obtained on the grid 2, which is fed to the fire wholesale and extinguishes it. Due to this solution, the fire extinguishing powder in the suspended state is located inside the foam of the foam. When the scoop of foam w in the zone of lateral rocks heated by fire, it collapses. Ahead of the flow of the foam flow, a cloud of fire extinguishing pores is created, which inhibits the flame phase of combustion by breaking the chains of chemical transformations of the burning and burning mode due to the influence on the active centers and radicals, which allows for an increase in the quenching efficiency. The invention of the method of obtaining the air-mechanical foam to extinguish fires by mixing your

air with a foaming solution, which is the fact that, in order to increase the efficiency of extinguishing, a fire extinguishing powder is introduced into the air.

Sources of information taken into account in the examination 1. Patent of Germany No. 1434963, cl. A 62 C 5/04, 1973.

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