Experimental study on a new self-priming equipment of centrifugal pumps
YANG Feng-ge1, LIU Hou-lin1, TAN Ming-gao1, YANG Feng-lei2
1.Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.School of Information Engineering, University of Finance and Economy, Zhengzhou, Henan 450002, China
Abstract：In order to realize the self-priming for normal centrifugal pumps,a new self-priming equipment with simple structure was designed,which can be maintained conveniently and combined to centrifugal pump as a whole.The design of this equipment was based on the technique of self-priming tanks.A jetting-recycle system was added to the self-priming tank.When the pump starts,the equipment begins to work,which increases the speed of mixing gas and liquid in the pump inlet,as well as the separating speed in the pump outlet.So the self-priming time decreases significantly.The experimental results indicate that the new equipment can decrease the self-priming time evidently,the minimum self-priming time is just 11 s,and the performance curve is steady and smooth.The external characteristic of centrifugal pump is not influenced,the pump efficiency is decreased by 1.83% at design point.So the equipment can meet engineering needs.
杨凤鸽；刘厚林；谈明高；杨风雷. 新型离心泵射流式自吸装置及试验[J]. 排灌机械工程学报, 2007, 25(4): 14-17.
YANG Feng-ge, LIU Hou-lin, TAN Ming-gao, YANG Feng-lei. Experimental study on a new self-priming equipment of centrifugal pumps. Journal of Drainage and Irrigation Machinery Engin, 2007, 25(4): 14-17.
