蜗舌半径对离心通风机气动性能的影响作用分析

Analysis of the Role of the Worm Tongue Radius on the Aerodynamic Performance of Centrifugal Ventilators

离心通风机的蜗舌半径对通风机的性能具有重要的影响作用,从而影响煤矿井下开采的通风安全性。采用有限元仿真的形式对不同蜗舌半径下通风机的静压值进行分析可知,较小的蜗舌半径时通风机内部的静压值较高,且内部流场的分布稳定,可以提高通风机的气动性能,由此可为离心通风机的设计使用提供指导。

The radius of the worm tongue of a centrifugal ventilator has an important influence on the performance of the ventilator,thus affecting the safety of ventilation in underground coal mining.The analysis of the static pressure value of the ventilator at different worm tongue radii by means of finite element simulation shows that the static pressure value inside the ventilator is higher at smaller worm tongue radii and the distribution of the internal flow field is stable,which can improve the aerodynamic performance of the ventilator,thus providing guidance for the design and use of centrifugal ventilators.