The volute of guide-vane structure can transform the kinetic energy to pressure energy as soon as possible, and improve the capacity of separating gas and liquid for the more balance flow in it.
The distributions of velocity, velocity moment, pressure and other flow parameters are obtained, and the properties of inner flow inside the volute are also analyzed.
得到了离心泵蜗壳内速度、速度矩、压力等参数的分布，分析了蜗壳内部流动的特征。
3
Therefore a new design method with varying spiral angles of volute was proposed by means of focus on improving the uniformity of pressure field near the tongue of the volute.