A New Mine Safety Monitoring System with Coal Spontaneous Combustion Monitoring Function

Abstract

The invention discloses a novel mine safety monitoring system with a coal spontaneous combustion monitoring function. The novel mine safety monitoring system comprises an ethylene gas detection case, wherein a first electric gas extracting pump, a first drying agent tank, a noble metal catalyst tank and an ethylene sensor are arranged in a case body of the ethylene gas detection case; the gas inlet end of the noble metal catalyst tank is directly communicated with the inner space of the case body; the gas outlet end of the noble metal catalyst tank is communicated with the gas inlet end of the ethylene sensor; the gas outlet end of the first gas extracting pump is connected with the gas inlet end of the first drying agent tank; the gas outlet end of the first drying agent tank is directly communicated with the inner space of the case body; the gas inlet end of the first electric gas extracting pump is connected with a gas inlet pipe joint; the first gas inlet pipe joint is connected with a first ventilating pipeline; the first ventilating pipeline is connected with an extending pipe outside the case body. The novel mine safety monitoring system with the coal spontaneous combustion monitoring function can effectively monitor gas in a region to be detected in real time through gas sampling and is high in monitoring accuracy and low in maintenance cost; monitoring for coal spontaneous combustion significant gas is informationized and automatic.

Description

technical field [0001] The invention relates to a mine safety monitoring system, in particular to a mine safety monitoring system with coal spontaneous combustion monitoring function. Background technique [0002] China's "Coal Mine Safety Regulations" divides the spontaneous combustion tendency of coal into three categories: not easy to spontaneously combustible, spontaneously combustible, and easy to spontaneously combustible. Most of the coal mines in China belong to spontaneous combustion mines. Coal spontaneous combustion disasters seriously affect the normal safety of coal mines. In the process of fighting against coal spontaneous combustion disasters, people from all walks of life in the coal industry have formed a consensus through various researches and discussions, that is, the presence or absence of carbon monoxide and ethylene gas can be used to judge whether a certain area in a coal mine is safe or not. The symbolic gas that produces coal spontaneous combustion ...

AI Technical Summary

Problems solved by technology

[0003] First: To monitor ethylene gas, you need to use an ethylene sensor. The ethylene sensor uses an electrochemical principle, and its measurement range is 0-10PPM. It is greatly interfered by carbon monoxide gas. When the measured gas contains carbon monoxide gas but does not contain ethylene gas, The ethylene sensor will mistake carbon monoxide gas for ethylene gas for detection, and there will be a certain display value, and the trace ethylene gas emitted when coal spontaneously combusts in coal mines is often mixed with carbon monoxide gas, and the concentration of carbon monoxide gas is greater than that of ethylene gas A lot, so it can't be detected directly with ethylene sensor

[0004] Second: The areas prone to spontaneous combustion underground in coal mines are often areas that cannot be reached by personnel, such as gobs, closed areas, upper and lower corners, etc. It is difficult to conduct random sampling and real-time monitoring

[0005] Third: The underground environment of coal mines is complex, and there are many impurities in the gas to be detected, such as dust, water vapor, carbon monoxide and other components, which will affect the detection accuracy of the sensor

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