Research and Application of Variable Frequency Local Ventilator in Long-distance Roadways
There is a phenomenon of large and unstable gas emission in long-distance roadways,and the local ventilator under traditional driving methods cannot meet the requirements of energy conservation and monitoring.Therefore,a dual frequency converter driven local ventilator system was developed.The system is equipped with three sets of gas sensors at the front of the excavation face,the return air flow of the excavation roadway,and the mixed return air roadway.The frequency converter automatically operates based on the gas volume fraction at the three monitoring points,achieving functions such as automatic gas drainage and ventilation.
local ventilatorfrequency converterlong-distance roadwaygas
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