RU1802153C - Device for remote sampling of mine air - Google Patents

Abstract

Usage: monitoring the state of the mine atmosphere. SUMMARY OF THE INVENTION: the device comprises an intake pipe in communication with an elastic sample chamber — and an ejector connected by a suction side to the intake pipe. An additional elastic chamber is placed inside the buffer tank, which is connected to a pipeline between the buffer tank and the ejector. At the outlet end of the ejector, a regulating locking element, for example, a valve, is installed. 1 ill.

Description

The invention relates to mining and can be used in mining operations or in the liquidation of accidents to control the atmosphere behind bridges and other hard-to-reach places.

The purpose of the invention is to improve the ease of use and to ensure the reliability of the analysis of samples of a controlled atmosphere.

A device for remote sampling of the mine atmosphere is shown in the drawing. It contains an intake pipe 1, an ejector 2, a buffer tank 3, a sampled elastic chamber 4, an additional elastic chamber 5 with a nozzle b, shut-off elements 7,8,9, a vacuum gauge 10 and a pressure gauge 11. The intake pipe 1 is preliminarily laid in the zone of the controlled atmosphere 12 , the ejector 2 is connected by a pipe 13 with a buffer tank 3 and through the pipe 6 with an additional

an elastic chamber 5, and a sample chamber 4 is connected by means of a pipe 14 to the buffer tank 3. The working fluid is supplied to the ejector 2 via a pressure pipe 16.

The device operates as follows.

With the open shut-off elements 7,8,9 include the flow of water into the ejector 2 through the pressure pipe 15; when water is ejected, a vacuum is created in the buffer tank 3 and in the intake pipe 1. At the same time, the chambers 4 and 5 are evacuated, which helps to ensure the purity of the sample, i.e. its authenticity. After reaching the required vacuum determined by the gauge 10, the shut-off element 7 is closed and a time delay (5-7 minutes) is made, during which the pressure in the buffer tank 3 and the intake pipe 1 is high (L

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equal to the pressure in the controlled zone 12, while the arrow of the gauge 10 drops to zero, and the composition of the gas mixture in the buffer tank 3 and e-pipe 1 will correspond to the composition of the gas mixture in the controlled zone 12. Then close the shut-off element 8, and slowly shut off the control shut-off element 9, directing a part of the water flow through the pipe 13 and the pipe 6 into the additional elastic chamber 5. The latter, being filled with water, displaces the gas sample from the buffer tank 3 into the sample collection chamber 4, the sample enclosed in the sample 4 is sealed and sent for analysis.

The exclusion of the use of a special fluid and the placement of an additional elastic chamber inside the buffer tank will improve the usability of the device, and the absence of contact of the displacing fluid with the gas

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breakdown - to increase the reliability of its analysis ..

Claims (1)

SUMMARY OF THE INVENTION A device for remote sampling of mine air, including an intake pipe, an ejector, a buffer tank located between the intake pipe and an ejector, an elastic sample chamber connected to the buffer tank, an additional elastic chamber with a pipe connecting the suction end of the ejector to the buffer tank, characterized in that, in order to increase the convenience of operation and ensure the reliability of the analysis of samples, an additional elastic chamber is placed on the inside of the buffer reservoir and communicated through the nozzle to the conduit, the eductor to reporting a buffer tank, and an ejector is provided with a regulating shutoff member mounted at its outlet end.