南京工业大学学报（自然科学版）2013，Vol.35Issue(1)：109-113,5.DOI:10.3969/j.issn.1671-7627.2013.01.023
叶轮切割方式对IS 100-65-200型离心泵性能的影响
Effects of impeller cutting ways on performances of IS 100-65-200 type centrifugal pump
摘要
Abstract
In different cutting ways, the flow field in 100-65-200 type centrifugal pump was simulated by Fluent software. The standard k-ε turbulence model and SIMPLEC algorithm were chosen in FLUENT. The simulation was steady and the moving reference frame was used to consider rotor-stator interaction. According to the simulation results, effects on the internal flow in 100-65-200 type centrifugal pump with different impeller cutting ways were analyzed and the performances of the centrifugal pump were predicted. The results showed that the head, the shaft power and the efficiency of the pump were affected by the cutting way. With the increasing of the cutting angle, the head and the power were increased at first and then decreased on the same cutting value. When the cutting angle was from 0° to 20°, the head value reached the highest one. When the cutting angle was about 20°, the power value reached the highest one. The highest efficiency and the head in the reverse miscut were obviously higher than that in the straight cut and positive miscut. The highest shaft power in the positive miscut was obviously higher than that in the reverse miscut way and straight miscut. The the inner flow analysis results indicated that, with the same external characteristics, the low-pressure area of the reverse miscut in the impeller was smaller than the tangent and the positive miscut, so the centrifugal pump performance was improved. Meanwhile, the reverse miscut reduced backflow at the tongue and enhanced the efficiency of the pump. In different cutting ways, the speed triangles at corresponding position of impeller outlet were not similar before and after impeller cutting. Considering different cutting angles, the existing cutting formula was revised and verified.关键词
离心泵/正切/斜切/切割定律/切割公式Key words
centrifugal pump/ straight cut/ miscut/ cutting law/ cutting formula分类
通用工业技术引用本文复制引用
宇晓明,邵春雷,顾伯勤..叶轮切割方式对IS 100-65-200型离心泵性能的影响[J].南京工业大学学报（自然科学版）,2013,35(1):109-113,5.基金项目
江苏省高校自然科学研究项目(10KJB470006) （10KJB470006）
