【摘要】 对四种不同几何参数的低比速注水泵导叶,配以相同的叶轮进行了对比试验。得出了不同几何参数的泵级导叶中水力损失的分布规律,初步摸清了导叶几何参数,特别是导叶扩散管的几何参数,对泵极性能及泵效影响的规律。研制出一种新型流道式导叶结构,使泵效有显著提高,所研制的高效率导叶,可以推广应用于其它低比速多级离心泵的更新改造。更多还原

【Abstract】 Attemps were made to improve the injection pumps efficiency by means of changing the diffuser geometries of low specific speed oil field injection pump stage. Stand test results of four different types of dif-fusers are shown. The effect of diffuser geometries on the performance and efficiency of the pump is also described. A new design of diffuser is recommended, which gives significant improvement on the pump efficiency.更多还原