SU1097347A1 - Barrier for explosive burning of gases - Google Patents

Abstract

GAS STOPTER OF EXPLOSIVE COMBUSTION, containing a U-shaped pipe filled with liquid, with gas supply and exhaust pipes located on its knees and a gas passage pipeline, characterized in that it has a diaphragm and non-return valve in order to increase the reliability of explosion localization. The membrane is installed in the middle part of the bend of the knee and has a central opening around which the through holes are made, and the return valve is the 1st valve installed in the central opening, while the pipeline for passage and it is located at the top of U-shaped tubes, and the liquid is filled below the ends of gas inlet and gas outlet present conductive pipes. (L

Description

i; o h

with

four

FIELD OF THE INVENTION The invention relates to anti-explosion protection in gas industry installations.

An explosive gas stopping device is known that contains a U-shaped pipe filled with a liquid with gas supply and exhaust pipelines and a gas transmission pipeline 1 located on its knees. However, this device is characterized by insufficient reliability of operation, as a result of which the flame front to the explosive burning barrier in certain conditions are suitable when the liquid in it takes its initial position, and thereby leaves a free gas path, and the flame passes unhindered through the main line.

The aim of the invention is to increase the reliability of explosion localization.

This goal is achieved by the fact that the barrier of explosive combustion of gases, containing a U-shaped pipe filled with liquid, with gas supply and exhaust pipes w and gas passage, located on its knees, has a diaphragm and a check valve, and the membrane is installed in the middle part of the bend the knee and has a central hole around which the through holes are made, and the check valve is installed in the central hole, while the gas passage pipeline is located in the upper part of the I-shaped pipe would a liquid filled lower ends of gas inlet and gas outlet present conductive pipes.

The drawing shows the design of the proposed block explosive combustion of gases.,

The barrier consists of a body 1 made in the form of a U-shaped pipe, which is filled to a certain level with water 2. The gas supply pipe 3 is lowered into the left part of the трубы-shaped pipe, and both pipes 3 and 4 are lowered into the right part body in such a way that between their lower ends and the. the surface of the water remains a free gap for the passage of gas. The housing 1 is filled with water and its level is controlled with the help of a valve 5.

A membrane 6 is mounted perpendicular to its axis in the lowest section of the i-shaped tube, on which a plate check valve 7 is attached. The diaphragm 6 has circumferential holes 8 on the peripheral part and a central opening 9

The gas volumes of the left and right parts of the i-shaped pipe are interconnected by means of pipe 10.

The barrier of explosive combustion of gases works as follows.

Under normal conditions, the combustible gas flows through the supply pipe 3 into the gas volume of the left side of the housing 1, from where it flows through the loop pipe 10 into the gas volume

the right side of the housing 1 and further is taken out through the gas exhaust pipe 4 to the gas consumer. The liquid levels 2 in the right and left parts of the housing 1 are the same, and the valve 7 is in the closed position.

In the event of explosive combustion at the gas consumer, the gas volume enters the gas volume of the right side of the housing 1 through the gas exhaust pipe 4

burning. The combustion zone is a complex of a compression wave and a flame. The flame spreads with a certain speed, determined by the composition of the gas and the combustion mode, over the gas volume of the right side of the housing 1, then the pipeline 10 is directed to the gas volume of the left side of the housing 1.

At this time, the compression wave acts on the surface of the liquid in the front part of the housing 1, the valve 7 opens and the liquid is pushed out into the left part of the housing 1 by the action of the boiling wave. At the same time, the liquid level in the left part of the housing 1 rises above the lower edge of the gas supply pipe 3 and the passage of the flame into the gas supply pipe 3 becomes impossible.

The liquid, having reached the highest possible level on the left side of the housing 1, tends to flow back s the right side of the housing 1 and expose the gas supply pipe 3.

However, this does not happen quickly, as the plate non-return valve 7 under the action of reverse water flow closes the main orifice 9 in the membrane 8. The fluid returns to its original equilibrium position through the small constantly open holes 9 in the membrane 8. The fluid flow from the emergency

Claims (1)

EXPLOSIVE COMBUSTION GAS-BREAKER, containing a U-shaped pipe filled with liquid, with gas supply and gas exhaust pipes located on its elbows and a gas passage, characterized in that, in order to increase the reliability of explosion localization, it has a membrane and a check valve moreover, the membrane is installed in the middle part of the bend of the knee and has a Central hole around which through holes are made, and a check valve is installed in the Central hole, while the pipeline for the passage of gas laid in the upper part of the U-shaped pipe, and the liquid is filled below the ends of the gas supply and exhaust pipes.