基于FLUENT的无过载离心泵改型及性能预测  

Improved design and performance forecasting of non-overload centrifugal pumps based on FLUENT

作　　者：王洋[1] 何文俊[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

出　　处：《排灌机械》2009年第2期115-118,共4页Drainage and Irrigation Machinery

基　　金：国家863计划项目(2006AA100211)

摘　　要：探讨了降低离心泵轴功率,避免配套电机过载的方法和措施;提出了采用堵塞部分流道的方法,来降低离心泵的轴功率.在利用商业软件FLUENT对离心泵进行性能预测的基础上,对IS50-32-160型离心泵的叶轮流道进行了两次堵塞尝试.第2次流道堵塞尝试,在堵塞了1/4左右的平面流道,两叶片间流道有效部分的出口和进口面积比改为1.16后,最大轴功率较堵塞流道前降低了10.4%,并呈现出无过载特性.两次堵塞对比的结果表明,采用正确的堵塞流道方法可以降低离心泵的轴功率,提高离心泵的效率;正确的堵塞流道方法应该考虑流道堵塞率以及两叶片间流道有效部分的出口和进口面积比.The methods to reduce centrifugal pump＇s power consumption and to avoid motor overload have been discussed. The method to reduce power by clogging flow passage has been presented. Two attempts on IS 50 - 32 - 160 non-overload centrifugal pump have been carried out by using the software FLUENT to forecast the performance. After clogging flow passage for second time, the maximal power was reduced by 10.4% and the non-overload characteristic had been presented. When the flow passage was clogged by 1/4, the proportion between inlet and outlet among two blades was changed to 1.16. The results of forecast are as following： adopting correct method of clogging flow passage, reducing the power of centrifugal pumps, thus their efficiency would be improved. The correct method of clogging flow passage must consider two factors, the ratio of clogging flow passage and an effective area proportion between inlet and outlet among two blades.

关 键 词：无过载离心泵 轴功率 效率 流道 面积比 

分 类 号：TH311[机械工程—机械制造及自动化]