离心泵多工况能量损失系数修正方法  

Multi-condition Correction Method of Energy Loss Coefficients for Centrifugal Pumps

作　　者：王凯[1] 吴贤芳[1] 陈新响[1] 周孝华[1] 

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《中国农村水利水电》2013年第2期122-125,共4页China Rural Water and Hydropower

基　　金：国家自然科学基金资助项目(51079062;51179075);江苏省自然科学基金项目(BK2010346;BA2010155;BY2011140);江苏省"333高层次人才培养工程";江苏省"六大人才高峰";江苏省科技支撑(工业)项目(BE2012129);江苏大学高级专业人才科研启动基金资助项目(12JDG045)

摘　　要：将能量损失系数融入离心泵多工况能量性能模型中,并采用全局优化算法对其进行求解,从而建立了一种离心泵能量损失系数修正方法。采用Pointer优化算法修正了一比转数为92.7的离心泵性能计算模型中各损失系数,同时设计了7个不同叶片出口角、出口宽度、叶片数的叶轮进行了试验研究,并与计算结果进行了比较。结果表明扬程和效率的计算误差均小于4%,从而验证了该离心泵能量损失系数修正方法是可行有效的。研究成果可以提高离心泵多工况水力优化设计的准确性。A correct method of energy loss coefficients for centrifugal pumps is proposed. In the method, energy loss coefficients are integrated into multi-condition performance calculation model of centrifugal pumps and global optimization algorithm are used to solve multi-condition performance calculation model of centrifugal pumps. Each loss coefficient of performance calculation model for a cen- trifugal pump whose specific speed is 92. 7. Simultaneously, seven impellers with different blade outlet angles, blade outlet width and blade number are designed and made. Comparison results between hydraulic performance data and test data show that all errors are less than 4%, which proves to be feasible. Research results can improve the accuracy of multi-condition hydraulic optimum design.

关 键 词：离心泵 多工况 能量损失系数 系数修正 

分 类 号：TH311[机械工程—机械制造及自动化]