流体机械2017，Vol.45Issue(1)：43-47,5.DOI:10.3969/j.issn.1005-0329.2017.01.008
不同叶片包角对螺旋形单蜗壳离心泵叶轮径向力特性的影响
Effect of Different Blade Wrap Angle on Impeller Radial Force for a Helical Single Spiral Volute Centrifugal Pump
摘要
Abstract
In order to investigate the effects of impeller wrap angle on the impeller radical force of the single-stage and single-suction centrifugal pump with single spiral volute ,the software CFD is applied to conduct the numerical calculation on the inner flow field of a model pump.Three kinds of impellers with different wrap angle are designed on the premise that the other geometric parameters of impellers and volutes are the same,and the wrap angle is designed as 110°,120° and 130°.Then,the distribution characteristics of radical force on the impeller under different conditions can be acquired through simulation.Besides,The reliability of numerical simulation is verified by the experiment of external characteristics.The results show that the radical force on the impeller is minimum under the designed condition and maximum under 0.4 Q.Furthermore,the pulsating amplitude is also the biggest under 0.4 Q.Therefore,the impeller wrap angle has a significant effect on the radical force.Taking the case under the designed condition for example,when the wrap angle is 130°,the fluctuation of radical force is maximum.When the wrap angle is 110°,the fluctuation of radical force is also big.On the whole,when the wrap angle is 120°,the performance of the scheme is optimal.This research can give reference for the hydraulic optimized design of centrifugal pump with low vibration and the improvement on operation stability of pumps.关键词
离心泵/叶片包角/径向力/数值计算Key words
centrifugal pump/blade wrap angle/radical force/numerical simulation分类
机械制造引用本文复制引用
张霞,袁寿其,张金凤,黄茜..不同叶片包角对螺旋形单蜗壳离心泵叶轮径向力特性的影响[J].流体机械,2017,45(1):43-47,5.基金项目
国家自然科学基金资助项目(51009072) （51009072）
江苏高校优势学科建设工程项目(PAPD) （PAPD）
