农业机械学报2013，Vol.44Issue(7)：45-49,5.DOI:10.6041/j.issn.1000-1298.2013.07.009
离心泵叶轮进口空化形态的试验测量
Experimental Measurement on Cavitation Pattern at Impeller Inlet of Centrifugal Pump
摘要
Abstract
Abstract:In order to study the cavitation pattern at impeller inlet of centrifugal pump,a medium specific speed centrifugal pump was selected as an object,and a total transparent water tank was located at inlet pipeline of model pump.Based on pump product testing system and image acquisition system,the cavitation pattern at impeller inlet under three different conditions were measured on the centrifugal pump closed experimental rig.Experimental results showed that the vapors generated at suction side of blade near the leading edge at first,but the location varied with the operation condition.With the decrease of NPSHa,the vapors generated at plurality of blades.The generation,development and collapse process obviously appeared with the rotation of impeller.When the head dropped seriously,the distribution of the vapors hardly varied with the rotation of impeller,and the vapor volume fraction near impeller hub was less than that at shroud side.关键词
离心泵/空化/叶轮进口Key words
Centrifugal pumps/Cavitation/Impeller inlet分类
机械制造引用本文复制引用
王勇,刘厚林,王健,吴贤芳,刘东喜..离心泵叶轮进口空化形态的试验测量[J].农业机械学报,2013,44(7):45-49,5.基金项目
国家自然科学基金资助项目(51239005、51079062、51179075)、"十二五"国家科技支撑计划资助项目(2011BAF14B03)、江苏高校优势学科建设工程项目、江苏省博士后科研资助项目(1202076C)和江苏大学高级人才基金资助项目(12JDG044) （51239005、51079062、51179075）
