RU30273U1 - FIRE EXTINGUISHER WATER - Google Patents

Description

FIRE EXTINGUISHER WATER

The utility model relates to fire fighting equipment, namely, fire extinguishers designed to extinguish fires of solid combustible materials, combustible liquids, gaseous water heaters, electrical equipment and installations under voltage up to 1000 volts

Known fire extinguisher / 1 /, which is a cylinder with an electric valve) YM and interchangeable nozzles-sprayers. The cavity of the container is filled with a fire extinguishing composition containing freons under a pressure of at least 8 atmospheres. The disadvantage of such a fire extinguisher is the impossibility of its use without personal protective equipment, since the temperature of the jet at the outlet of the cylinder is minus 20 C, which can cause isothermal injury.

Known transport |: portable fire extinguisher / 2 /, which is a cylinder with a launch head and siphon tube, made with a closed lower end and holes on the side surface. The cylinder cavity is filled with a gas that creates pressure and a fire extinguishing fluid, which includes propellant. The disadvantage of this fire extinguisher is the creation of an explosive situation during fire extinguishing due to the formation of hydrocarbon vapors, as there are no components in the composition of the extinguishing fluid that reduce the likelihood of an explosion. The disadvantages of the described fire extinguisher include a decrease in the area of fire extinguishing due to the exclusively directed spraying of the extinguishing ci gun, which is due to the design of the spray gun trigger.

For the prototype adopted a fire extinguisher / 3 /, which is a cylinder with a launch head, consisting of a valve with a spray. The head is connected to a siphon tube. The pressure chamber cavity is filled with propellant; 1 holding fire extinguishing composition, which additionally contains hexane fluorodibromopropane, tetrafluoroethane, and

difluorochloromethane is used as the propellant, in the following ratio of components,% mass .:

Hexane fluorobromopropane 20-25

Difluorochloromethane 25-30

Tetrafluorep anOstalnoe to 100

This constructive solution of the fire extinguisher eliminates the significant disadvantages of the above analogues:

- reduce the likelihood of an explosion when extinguishing a fire;

- to form an increased area of the fire extinguishing spot;

fi: - i: 7 f; a y :: y -: - --s

7 A62C 13 /

- lack of smoke suppression function;

- the allocation of highly toxic combustion products during operation.

When creating the claimed utility model, the task was set:

-increase the reliability of the device during operation;

-create conditions for highly effective smoke control;

-protect people and surrounding objects from exposure to hazardous factors 7: ara.

The complex task posed is solved by the fact that in a fire extinguisher containing a cylinder with a fire-extinguishing liquid, which is under pressure and a valve with a spray connected to a siphon tube located in the cylinder, the fire-extinguishing composition contains components the next time they come together, masses. %:

Fire retardants 10-20

Antifreeze 15-20

Passivating agent 0.5-1.0

Potassium Dichromate) 0.1 -0.5

Surfactant0.5-1.0

Water74-58

Urea and phosphoric acid salts can be used as flame retardants. Ethanol may be used as antifreeze. Sodium dichromate can be used as a passivating additive. Potassium dichromate is an additive that excludes coking. Any hydrocarbon blowing agent can be used as a surfactant, for example: OP-10.

Thus, in the water-based extinguisher proposed, the extinguishing composition co; .loads organic and inorganic biodegradable environmentally friendly components, the correlation of which is selected experimentally. The combination of physicochemical parameters of these components (density, viscosity, surface tension, etc.) determines the special hydrodynamic characteristics of the sprayed jet, which ensures high characteristics of the extinguisher.

The claimed utility model is illustrated by a figure, where:

1 - cylinder

1 - valve

J - spray

4- siphon soldering tube

5- gas under pressure

6- aqueous solution of organic and inorganic biodegradable environmentally friendly substances.

The work of the fire of the inflicter is carried out as follows: Prepare a fire-extinguishing mixture according to the technical conditions developed by the applicant. Through the dosing device, the composition is poured into tin containers with a capacity of 1 liter. Then a valve is installed, I pressurized hermetically, and the balloon is filled with displacing gas, for example, carbon dioxide or nitrogen.

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To operate the fire extinguisher, it is enough to point the spray gun at the ignition site and press the valve. In this case, the supply of atomized sfuy can be provided.

The use of the proposed water fire extinguisher determines noj (learning the technical result, which is as follows:

-P. Increased reliability of the device during operation;

-conditions of highly effective smoke control;

-Provided protection for people and surrounding objects from the effects of dangerous fire factors.

In addition, a distinctive feature of the claimed fire extinguisher are:

- high economic indicators: 1 liter of extinguishing fluid replaces 20 liters of water;

- extinguishing agent does not damage equipment and materials;

- ability 01 of the non-extinguishing composition to maintain its properties after irradiation;

- the presence in the aqueous solution of organic and inorganic biodegradable environmentally friendly substances creates an environment that is not dangerous and suitable for human breathing.

Fire extinguishers are simple in design and can be operated in the temperature range from minus 20 C to plus 50 C.

A fire extinguisher is a single use product with metered use.

The utility model can be repeatedly reproduced at the production facilities of LLC Scientific and Production Complex Fire Safety Systems and Technologies.

Sources of information taken into account when drawing up the description and formulas of the utility model:

1.Paten 1 RF 1472073, 7 A 62 D 1/00, publ. 08.27.87 g .;

2. Patent of the Russian Federation 2135237, 7 A 62 C 13/00, published on 08.27.99;

3. According to the Government of the Russian Federation for utility model 20844, 7 A 62 C 13/00,

publ. December 10, 2001

Claims (2)

1. Water fire extinguisher, which is a cylinder with a launch head, consisting of a valve with a spray, the head is connected to a siphon tube, the cavity of the cylinder under pressure is filled with a fire extinguishing liquid, characterized in that the fire extinguishing composition contains components in the following ratio, wt.%: Fire retardants 10-20 Antifreeze 15-20 Passivating additive 0.5-1.0 Potassium Dichromate 0.1-0.5 Surfactant 0.5-1.0 Water 74-58 2. Water fire extinguisher according to claim 1, characterized in that sodium dichromate is used as a passivating additive.