排灌机械工程学报Issue(7)：583-587,5.DOI:10.3969/j.issn.1674-8530.12.1240
超大流量轴流潜水泵叶轮设计与优化
Design and optimization of super-large capacity submersible axial-flow pump impeller
摘要
Abstract
The impeller blade of a super-large capacity submersible axial-flow pump was designed based on the airfoil theory,the flow in the pump system was simulated by using computational fluid dy-namics (CFD)method and the pump performance was predicted.The pump hydraulic model was opti-mized based on the numerical simulations of three different hydraulic models,and verified experimen-tally.It was shown that there is a noticed high-pressure region near the blade pressure side and the leading edge in the original impeller,additionally near the blade suction side and leading edge there exists a low-pressure region and an intensive vorticity,which consumes considerable energy resulting in a poorer hydraulic efficiency.The original impeller was optimized by increasing the inlet blade angle and reducing the rotational speed,consequently the optimized impeller is subject to a more uniform static pressure distribution in the blade pressure side and a shrunk vortex zone in the suction side with even vorticity.Clearly,the pump cavitation performance and hydraulic efficiency have been improved. The performance of optimized hydraulic model exhibits good agreement with the experimental data,in-dicating the numerical results can reveal the actual performance of a hydraulic model exactly.The methods adopted in this study may provide a reference for hydraulic model optimization and perfor-mance improvement of submersible axial-flow pumps.关键词
轴流潜水泵/叶轮/大流量/性能改进Key words
axial-flow submersible pump/impeller/large capacity/performance improvement分类
农业科技引用本文复制引用
吴淳杰,邴智刚,程力,陈佳静,王乐勤,翟松茂..超大流量轴流潜水泵叶轮设计与优化[J].排灌机械工程学报,2014,(7):583-587,5.基金项目
宁波市重点科技攻关计划项目 （）
