排灌机械工程学报2012，Vol.30Issue(6)：660-664,5.DOI:10.3969/j.issn.1674-8530.2012.06.009
不同翼型前置导叶正预旋对离心泵性能影响
Influence of positive preswirl generated by different airfoils on performance of centrifugal pump
摘要
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 appropriately 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 Gottin-gen-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 m3Vh at the 20° and 40° preswirl angles; for the Gottingen airfoil, the best efficiency point was changed to 172 mVh as well; however, the best efficiency occurred at 190 mVh 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.关键词
离心泵/前置导叶/水力性能/预旋调节/效率Key words
centrifugal pump/inlet guide vanes/hydraulic performance/preswirl regulation/efficiency分类
农业科技引用本文复制引用
王海民,周裁民,黄雄,林浩..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):660-664,5.基金项目
国家自然科学基金资助项目(51176127) （51176127）
教育部博士点基金资助项目(20103120120005) （20103120120005）
上海市教委重点学科建设项目(J50501) （J50501）
