有些矿井利用大气压力差引起空气自然流动，有些矿井则必须用扇风机把空气压人井内。
In some cases the difference in atmospheric pressure causes the air to circulate naturally; in others a fan must be used to pump air into the mine.
介绍了一种矿井扇风机的计算机优选方法及优选程序。
This paper introduced an optimizing method and optimization program used for selecting mine fan by computer.
对矿井开采中采用的局部扇风机进行泄压通风的技术作了介绍。
This paper introduces the decompression ventilation technique with local fans in the excavation of the mine.
煤矿主扇风机的主要功能是保证井下空气畅通新鲜，降低瓦斯浓度。
The function of the main fan in coal mine is to keep fresh air and reduce the concentration of gas.
分析了井下局扇风机烧毁的原因，提出了仅改动一根线，即可解决井下局扇风机因断相而烧损问题的方法。
And the methods of solving the burning problems caused by breaking phase are provided, which is only changing one circuit.
系统采用无环流交-交变频控制方案、应用无速度传感器的矢量控制技术对拖动煤矿主扇风机的感应电动机进行控制。
The system is designed as circulation absent and A-A VF controlled one, in which a responsive motor driving the main ventilation fan is controlled in a vector control technology without speed sensor.
系统采用无环流交-交变频控制方案、应用无速度传感器的矢量控制技术对拖动煤矿主扇风机的感应电动机进行控制。
The system is designed as circulation absent and A-A VF controlled one, in which a responsive motor driving the main ventilation fan is controlled in a vector control technology without speed sensor.
应用推荐