流体机械2017，Vol.45Issue(2)：38-42,5.DOI:10.3969/j.issn.1005-0329.2017.02.008
蜗壳喉部面积对离心泵非定常特性的影响
Research on the Influence of Volute Throat Area on Unsteady Characteristics in a Centrifugal Pump
陈颖 1李国平 2张宁 3杜文强 3高波3
作者信息
- 1. 海军驻温州地区军事代表室,浙江温州 325000
- 2. 中国船舶重工集团第七〇四研究所,上海 200031
- 3. 江苏大学,江苏镇江 212013
- 折叠
摘要
Abstract
For a given impeller,four pumps with different volute throat areas,were calculated based on numerical simulation method.Unsteady flow characteristics of the pumps were obtained.The influences of throat area on hydraulic performance,radial force and pressure pulsation were discussed.Results show that throat area has a great effect on the pump hydraulic performance.The head and hydraulic efficiency decrease with throat area decreasing at nominal flow rate.The radial forces of four impellers differ significantly at various flow rates,which would reach a minimum value.But the corresponding flow rates of the minimum points are different.The reasonable throat area could effectively reduce the amplitude of pressure pulsation,and it would increase with the throat area decreasing.Meanwhile,pressure pulsation energy decreases with the throat area increasing.The obtained results would provide some supports for low noise centrifugal pump design considering different throat areas.关键词
离心泵/喉部面积/水力性能/径向力/压力脉动Key words
centrifugal pump/volute throat area/hydraulic performance/radial force/pressure pulsation分类
机械制造引用本文复制引用
陈颖,李国平,张宁,杜文强,高波..蜗壳喉部面积对离心泵非定常特性的影响[J].流体机械,2017,45(2):38-42,5.
