离心泵叶片三角形切割方法研究  

Research on Centrifugal Pump Performance of Triangular Cutting Blade

作　　者：牟介刚[1] 王硕[1] 郑水华[1] 朱波[1] 林玲[1] 施翰昱[1] 范文粲[1] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310014

出　　处：《轻工机械》2013年第5期92-96,100,共6页Light Industry Machinery

基　　金：国家科技人员服务企业行动项目(2009GJC20008)

摘　　要：为了消除泵性能曲线驼峰,提出了一种新型三角形切割叶片方法,并对离心泵进行CFD数值模拟和试验检测。研究表明,三角形切割能消除泵特性曲线驼峰,对效率的影响比较小,但切割量超过某个临界值时,泄漏损失严重,大流量工况下效率会有较明显的降低。同时,分析了三角切割角度与性能参数之间的关系,并且给出了最佳切割角度。Based on CFD numerical simulation and experimental investigation, the new shape of blade outlet edge was suggested in order to avoid hump. The result indicates that triangular cutting the outlet edge of blades can avoid hump. The values of head and efficiency at design flow rate change little. But if triangular cutting exceeds a certain critical value, the leakage loss is serious. The efficiency at large flow significantly reduces. And the optimum triangular size is given out for reference.

关 键 词：离心泵 三角切割 数值模拟 试验研究 

分 类 号：TH311[机械工程—机械制造及自动化]