面积比原理在冲压泵设计中的应用研究  

Study and investigation on the application of areas ratio principle in design of stamping and welding centrifugal pump

作　　者：甘建军[1] 牟介刚[1] 郑水华[1] 陆河权[1] 朱波[1] 黄辉[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：《机械设计》2013年第5期89-92,共4页Journal of Machine Design

摘　　要：基于面积比原理对冲压泵叶轮出口与导叶进口的匹配进行设计与研究,采用数值模拟和试验研究相结合的方法研究了叶轮出口与导叶进口面积比和导叶进口与导叶到泵腔壁间环形进口面积比对泵内部流场和性能的影响。分别对5种不同面积比的冲压泵模型进行计算分析,结果表明:随着叶轮出口面积F2与导叶进口面积F3比值Y=F3/F2的增大,导叶进口流速越来越小,冲压泵的扬程和效率不断提高,当由Y=1.48增大到Y=3.49时,扬程和效率分别提高了约3.0%和2.0%。随着导叶到泵腔壁间环形进口面积F的增大,导叶出口的平均静压值先增大而后又下降,冲压泵的扬程和效率也先增大后下降,当F=1 680.4 mm2(F/F3=197.2%)时,扬程和效率都达到最大值。Based on the areas ratio principle, this paper de- signed and studied the match of impeller outlet with diffuser inlet, studied the influence on pump internal flow characteristics and per- formance in stamping and welding centrifugal pump by the area ratio of impeller outlet to diffuser inlet and the area ratio of impeller inlet to ring inlet between pump chamber walls by using the method of combining CFD simulations with experimental research. The pump models with five different area ratios were analyzed. The results in- dicate that the fluid velocity at diffuser inlet decreases continuously as the area ratio Y = Fa/F2 increases, however the head and effi- ciency of the pump increase continuously. When the area ratio in- creases from Y = 1.48 to Y = 3.49, the head and the efficiency in- creases about 3.0% and 2.0% respectively. As the import area F between diffuser and pump chamber wall increase, the average stat- ic pressure of diffuser outlet first increases and then decreases, and the same case occurs with the efficiency and head. Both the effi- ciency and head reaches the maximum value when the import area F = 1 680.4 mm2 （F/F3 = 197.2% ）.

关 键 词：冲压焊接离心泵 面积比 叶轮出口 数值模拟 水力性能 

分 类 号：TH311[机械工程—机械制造及自动化]