对钱家营煤矿2台主要通风机分别在多个叶片角度、多个转速下进行了性能测试,以探查矿井通风机的最大允许叶片安装角度和各叶片角度下的最高允许转速。实测表明,叶片角度越大、转速越高,对应的“喘振”风阻越小,也就是说风机越容易喘振;改变叶片角度对于提高风机的通风能力效果不是特别明显,而在同一叶片角度时,转速提高,风机风量和风压明显提高。 Two main ventilators of Qianjiaying Coal Mine were tested for performance at multiple vane angles and multiple rotations to explore the maximum allowable vane mounting angle of mine ventilator and the maximum allowable speed under each vane angle. The measured results show that the bigger the blade angle is, the higher the rotation speed is, the smaller the air resistance corresponding to the “surge” is. That is to say, the wind turbine is more prone to surge; changing the blade angle is not particularly obvious for improving the ventilation capacity of the fan, Blade angle, the speed increased, the wind turbine wind pressure and significantly improved.