离心泵滑移系数精度的比较  

Precision comparison on slip factor of centrifugal pumps

作　　者：刘厚林[1] 谈明高[1] 袁寿其[1] 吴贤芳 杨凤鸽[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 [2]上海凯泉泵业有限公司,上海201804

出　　处：《排灌机械》2006年第6期4-6,11,共4页Drainage and Irrigation Machinery

基　　金：国家自然科学基金资助项目(50509009);江苏省自然科学基金资助项目(BK2004406)

摘　　要：滑移系数是计算离心泵理论扬程的关键.分析了滑移系数的定义、本质及国内外滑移系数的研究状况.通过对大量优秀离心泵效率的计算,以试验效率为标准比较了目前离心泵常用的斯托道拉、威斯奈和斯基克钦等滑移系数计算公式的精度.计算结果表明,与试验效率相比,离心泵在比转数小于65时威斯奈公式的计算结果更为精确;比转数大于65时斯基克钦公式的计算更为准确.Slip factor of centrifugal pumps is very important to theoretical head calculation. The present research situations on slip factor of centrifugal pumps, definition and characters of slip factor are reviewed. Based on the practical efficiency calculation of many excellent centrifugal pumps, the Stodola, Stechkin, and Weisner slip coefficient formulas are compared. The standard of comparison is experiment efficiency. Compared with experiment efficiency, the research indicates that Weisner formula （ns 〈 65 ） and Stechkin formula（ns 〉65） are more accurate for centrifugal pumps and that the Stodola formula is not suitable for centrifugal pumps.

关 键 词：离心泵 滑移系数 精度 理论扬程 性能预测 

分 类 号：TH311[机械工程—机械制造及自动化]