排灌机械工程学报2016，Vol.34Issue(8)：665-671,7.DOI:10.3969/j.issn.1674-8530.15.0169
导叶叶片数对多级离心泵压力脉动的影响
Influence of guide vane blade number on pressure fluctuation in multistage centrifugal pump
摘要
Abstract
In order to investigate the influence of common denominator of impeller and guide vane numbers on pressure fluctuation in the multistage centrifugal pump,four guide vanes with different blade numbers were designed and the hydrodynamic performance at the rated point remained unchan-gable.Based on the standard k -εturbulence model,computational fluid dynamics software CFX was employed to carry out the numerical simulation calculations.Pressure fluctuations at monitoring points of impeller and guide vane in the second stage of the pump are obtained.The results show that the nu-merical simulation results coincide with experimental results,which proves the feasibility of the nume-rical simulation.The matching form of having the greatest common denominator of impeller and guide vane number has an obvious influence on the static pressure distribution in multistage centrifugal pumps,mainly for the periodic disciplinarian of circumferential pressure in the inlet of guide vane. The number of impeller is the main factor causing pressure fluctuation in the guide vane,and blade passage frequency has a great impact on the flow-induced vibration.The amplitude of pressure fluctua-tion increases with the increasing of the number of guide vane.关键词
导叶叶片数/多级离心泵/压力脉动/叶轮口环/压力分布Key words
guide vane number/multistage centrifugal pump/pressure fluctuation/impeller wear-ring/pressure distribution分类
农业科技引用本文复制引用
马新华,冯琦,蒋小平,王伟,陆伟刚..导叶叶片数对多级离心泵压力脉动的影响[J].排灌机械工程学报,2016,34(8):665-671,7.基金项目
国家科技型中小企业技术创新基金资助项目（14C26213201080）；江苏省自然科学基金资助项目 （）
