SU1326282A1 - Method of gasification of liquefied inert gas when fighting a fire in horizontalworking - Google Patents

Abstract

The invention relates to the field of fire extinguishing, can be used in the gasification of liquefied inert gas used in extinguishing a fire in mines, and allows you to increase the reliability of the gasification process and reduce energy costs. From the sump 1, the coolant is fed through the suction line 3 to the pump 2, then through the discharge line 4 to the flow shutter 6, from which it is sent to the mixing chamber 7. / / Y / A1 In the same chamber from the tank 5 liquefied inert gas, for example nitrogen. Under the action of centrifugal force, the coolant and liquefied inert gas are pressed against the walls of the pipeline, and due to the difference in density (water 1000 kg / m, liquefied nitrogen - 800 kg / m) the mixture separates, resulting in the flow of heat carrier between the layer of liquefied gas and the wall pipeline When an atom increases, the contact surface of two liquids increases, which improves the process of evaporation of liquefied gas, prevents the pipeline from freezing and the appearance of a layer on its surface. The gas-liquid mixture is piped to the insulated volume with a fire source where they are separated. Inert gas flows to the hearth, and the cooled coolant drops out of the working soil. Passing through the soil of a mine working, the coolant is heated by geothermal energy, the massif and returned to the catchment basin. 1 il. i (L with N5 05 to 00 IND

Description

The invention relates to fire suppression and can be used in the gasification of liquefied inert gas used in extinguishing a fire in mine workings.

The aim of the invention is to increase the reliability of the gasification process.

The drawing shows a diagram of the device that implements the proposed "3rd method.

The device includes a sump 1 pump 2, suction 3 and forcing

4pipelines, tank 5 with a liquefied inert gas, the curler 6 flow, the mixing chamber 7 and the jumper 8,

The method is carried out as follows.

The coolant, such as mine water, from the sump through the suction pipe 3 enters the pump 2, and then through the discharge pipe 4 into the flow curler 6 installed directly in front of the mixing chamber 7. From the tank

5, a mixing inert chamber, for example nitrogen, is supplied to the mixing chamber in a swirling flow of heat-transfer agent. Since the coolant has a greater density (water — 1000 kg / m) than liquefied gas (nitrogen — 800 kg / m), after the mixing chamber the coolant is pressed against the walls by centrifugal force, and the less dense liquefied gas moves inside. The heat carrier takes heat away from it and is intensively gasified. Thus, by increasing the Compiler N. Goldobin. Editor A.Makovska Tehred L.Oliynyk Proofreader .N.Patay

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VNSHSHI USSR State Committee

for inventions and discoveries P3035, Moscow Zh-35, Raushsk nab., 4/5

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

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the surface of the contact of two liquids gasification process, goes without contact of liquefied inert gas with the walls of the pipeline, which improves gasification and prevents the pipeline from freezing. The gas-liquid mixture thus obtained is fed through a pipeline into an isolated volume with a fire. Here, the inert gas moves in production to the site of fire, displaces oxygen and stops burning, and the cooled coolant falls on the working soil. Passage through the soil of the mine workings (horizontal mine workings have a slope towards the trunk with a water collector), the coolant is heated due to the heat of the mountain massif and gets into the water collector. The gasification process is then repeated.

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The use of the invention will eliminate the freezing of the coolant on the walls of the pipeline and thereby increase the reliability of the gasification process of a liquid inert gas.

Formulas

the invention

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The method of gasification of liquefied inert gas in extinguishing a fire in mine workings, including the introduction of a liquid inert gas into the flow of heat transfer fluid with the following: nm separation of gas from the heat transfer fluid, characterized in that, in order to increase the reliability of the gasification process, the flow of heat transfer fluid before putting it into liquefied gas twist.

Claims (1)

Claim The method of gasification of liquefied inert gas during a fire extinguishing in mining, including the introduction of liquid inert gas into the coolant stream, followed by gas separation 35 from the coolant, characterized in that, in order to increase the reliability of the gasification process, the coolant stream before entering the liquefied gas gas twist.