排灌机械工程学报
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排灌机械工程学报  2012, Vol. 30 Issue (6): 660-664    DOI: 10.3969/j.issn.1674-8530.2012.06.009
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不同翼型前置导叶正预旋对离心泵性能影响
 王海民,  周裁民,  黄雄,  林浩
(上海理工大学能源与动力工程学院, 上海 200093)
Influence of positive preswirl generated by different airfoils on performance of centrifugal pump
 WANG  Hai-Min,   Zhou-Cai-Min,   Huang-Xiong,   Lin-Hao
(School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)
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摘要 为了优化离心泵运行工况调节,运用叶轮机械设计和前置导叶预旋调节的基本理论,在整流片和Gottingen-364翼型的基础上,设计出两种不同翼型的前置导叶预旋调节装置,研究了不同翼型前置导叶正预旋对离心泵水力特性的影响.试验结果表明:对于单吸离心泵,适当的前置导叶正预旋调节角度选择能够达到离心泵增效节能的效果.与无导叶工况相比,等厚直叶片使离心泵效率最大提高205%,功率消耗最多节省635%;Gottingen弯叶片使离心泵效率最大提高234%,功率消耗最多节省653%;两者都减小了扬程,但影响程度较小.等厚直叶片在两个预旋角度下最高效率点都往小流量区偏移到172 m3/h处;对于Gottingen弯叶片,20°预旋时,最高效率点往小流量区偏移到172 m3/h,40°预旋时,最高效率点往小流量区偏移到190 m3/h,两个预旋角度高效区都得到了扩大.
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王海民
周裁民
黄雄
林浩
关键词离心泵   前置导叶   水力性能   预旋调节   效率     
Abstract: Two sets of inlet guide vanes with different airfoil sections were designed for the preswirl regulation in a centrifugal pump by using the basic design theory of turbomachinery to optimize its operation conditions.Subsequently, effects of positive preswirl induced by the guide vanes with different airfoils on the hydrodynamic performance of the centrifugal pump were studied. The result showed that an appropriately designed positive preswirl could increase the efficiency of the singlesuction centrifugal pump.Compared with the performance without the inlet guide vanes, the efficiency of the centrifugal pump installed the inlet guide vanes with straight constantthickness could be increased as high as 2.05% and the responding shaftpower consumption could be reduced as low as 6.35%. For the guide vanes with Gottingen364 airfoils, the efficiency of the pump was increased by 2.34% and the reduction in shaftpower consumption was lowered by 6.53%.The inlet guide vanes with both straight constantthickness blade and Gottingen airfoil showed little influence on the head. For the straight constantthickness blade, the best efficiency point was moved to a low flow rate 172 m3/h at the 20° and 40° preswirl angles; for the Gottingen airfoil, the best efficiency point was changed to 172 m3/h as well; however, the best efficiency occurred at 190 m3/h at the 40° preswirl angle.Clearly, the high efficiency range has been extended at the 20° and 40° preswirl angles for the inlet guide vanes with Gottingen airfoil.
Key wordscentrifugal pump   inlet guide vanes   hydraulic performance   preswirl regulation   efficiency   
收稿日期: 2012-04-16; 出版日期: 2012-11-30
基金资助:

国家自然科学基金资助项目(51176127); 教育部博士点基金资助项目(20103120120005); 上海市教委重点学科建设项目(J50501)

通讯作者: 王海民(1971—),男,湖北黄冈人,副教授(hmwang@usst.edu.cn),主要从事新能源设备与过程中的流体力学研究.   
作者简介: 周裁民(1987—),男,湖北荆州人,硕士研究生(caiminzhou0330@163.com),主要从事流动测量技术研究.
引用本文:   
王海民, 周裁民, 黄雄等. 不同翼型前置导叶正预旋对离心泵性能影响[J]. 排灌机械工程学报, 2012, 30(6): 660-664.
WANG Hai-Min, Zhou-Cai-Min, Huang-Xiong et al. Influence of positive preswirl generated by different airfoils on performance of centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(6): 660-664.
 
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