论文部分内容阅读
在苏联各个煤矿中运行着的局部扇风机约有15万台,这些风机分为电传动或压气传动两种。它们通过风筒向掘进工作面压入空气,为独头巷道通风。每条风筒可安装一台或几台串联的风机。近年来与工作风机并联安装备用风机的方法获得了广泛应用。 能以5～20米~3/秒的风量向长度达1000米以上的风筒供风的大型风机的需求不断增加,这是局部扇风机发展的突出趋势。因此
There are about 150,000 local fans operating in various coal mines in the Soviet Union. These fans are classified into electric or pneumatic transmissions. They press air into the working face through the air duct to ventilate the single-headed tunnel. Each fan can be installed one or several fans in series. In recent years, the method of installing a backup fan in parallel with a working fan has been widely used. The demand for a large fan capable of supplying air to a duct tube having a length of more than 1000 meters with an air volume of 5 to 20 m 3 / sec is constantly increasing, which is a prominent trend of the development of a local fan. therefore