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.
压水室采用导叶式结构能够尽快地把液体的动能转换为压力能，同时能够使泵腔内的流动更趋合理均匀，提高泵内气液分离的能力，并且能平衡叶轮径向力。
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。
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.
因此，提出了一种通过改善蜗舌附近压力区的均匀性的、新的变螺旋角蜗壳设计方法。
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