Mine air quality composite index and ventilation energy-saving linkage system

Abstract

Mine air quality comprehensive index and ventilation energy-saving linkage system, including carbon monoxide detectors, hydrogen sulfide transmitters, sulfur dioxide detectors, nitrogen dioxide transmitters, dust detectors, PLC, main fan and main fan inverter, industrial computer and Local area network, the carbon monoxide detector, hydrogen sulfide transmitter, sulfur dioxide detector, nitrogen dioxide transmitter and dust detector are all connected to the PLC input terminal, the PLC output terminal is connected to the main fan frequency converter, and the main fan frequency conversion The controller is connected to the main fan, the PLC is bidirectionally connected to the industrial computer, and the industrial computer is connected to the local area network. The invention improves the ventilation effect of the underground mining face (or the middle section of the main operation) of the non-ferrous mine, and improves the working environment of underground workers. The mine ventilation system is divided into time and season frequency conversion energy-saving control system, which reduces the ventilation energy consumption of the underground ventilation system of non-ferrous metal mines by more than 14%.

Description

technical field [0001] The invention relates to the field of mining, in particular to a mine air quality comprehensive index and ventilation energy-saving linkage system. Background technique [0002] At present, most of the non-ferrous metal mines in our country have entered the middle and deep mining. As the mining depth increases, ventilation becomes difficult. The power of the main and auxiliary fans of the ventilation system is increasing, and the ventilation cost is getting higher and higher. According to our institute's survey on the ventilation systems of some non-ferrous metal mines in Hunan, the power consumption of each mine ventilation system accounts for 17% to 30% of the total underground power consumption, and the proportion has shown an increasing trend in recent years. At present, some mine underground ventilation systems use frequency conversion technology to reduce the speed of the main fan. Although the power consumption of the ventilation system is reduc...

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Problems solved by technology

At present, some mine underground ventilation systems use frequency conversion technology to reduce the speed of the main fan. Although the power consumption of the ventilation system is reduced and the ventilation cost is reduced, the total air supply volume of the ventilation system is also reduced, which is prone to high levels of toxic and harmful substances in the air of some mining faces. , it is difficult to remove toxic gas, and the poor air quality of the mining face affects the safety of workers

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