凹槽深度对新型平衡鼓性能影响的研究  

Study on the influence of the depth of grooves on performance of novel balance drum

作　　者：陆河权[1] 牟介刚[1] 郑水华[1] 金建波[1] 赵锦靖[1] 汪慧[1] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310032

出　　处：《浙江工业大学学报》2012年第5期559-561,566,共4页Journal of Zhejiang University of Technology

基　　金：国家科技部科研基金资助项目(2009GJC20008)

摘　　要：提出了一种带凹槽的新型平衡鼓结构,并研究了新型平衡鼓凹槽深度对平衡力和离心泵外特性的影响.利用CFD软件模拟分析了不同凹槽深度时新型平衡鼓的间隙泄漏量及两侧压差变化情况;通过试验分析了新型平衡鼓不同凹槽深度时泵的性能和残余轴向力情况,并对试验结果和数值模拟结果进行对比分析.研究结果表明:凹槽深度是影响间隙泄漏量及新型平衡鼓轴向力平衡的重要因素,随着凹槽深度的增多,间隙处的泄漏量减小,轴向力的平衡鼓效果更好.A novel balance drum with grooves was presented, and the influence of depth of grooves on performance of centrifugal pump and balance force was analyzed by the approach of numerical simulation and experiments. The liquid flowing situation at the clearance and the differential pressure on two sides of the balance drum under different depth of grooves were simulated. The efficiency, quantity of flow and axial force were measured by the experiments with different test devices. After comparing and analyzing the results of simulations and experiments, it illustrates that with the grooves become deeper the leakage losses in the clearance reduce and the differential pressure between two sides of the balance drum increase, which contributes to the balance of the axial force.

关 键 词：多级离心泵 轴向力 平衡鼓 间隙泄漏 数值模拟 

分 类 号：TH311[机械工程—机械制造及自动化]