Experimental comparison and selection application of axial-flow pump devices with same specific speed
In order to study the adaptability of axial-flow pumps with the same specific speed in engi-neering applications,supported by the design parameters of the Songchao Station of the Huaihe River Estuary Waterway Phase Ⅱ Project,the preliminary pump selection method of equal flow rate and head increase was adopted to carry out the device model test based on the axial-flow pumps(TJ04-ZL-11,ZM60A)with the same specific speed,respectively.The performance of the pumping device in terms of energy,cavitation,and runaway was compared and analyzed.The results show that when the blade placement angle of the TJ04-ZL-11 hydraulic model is 0° and the pumping device head is 4.61 m,the efficiency of the pumping device is 73.04％.When the maximum head is 8.42 m,the effi-ciency of the pumping device is 66.17％.When the blade placement angle of the ZM60A hydraulic model is 0° and the pumping device head is 4.61 m,the efficiency of the pumping device is 73.96％,and when the maximum head is 8.42 m,the efficiency of the pumping device is 71.14％.Cavitation test results show that the ZM60A hydraulic model cavitation performance is better than the TJ04-ZL-11 hydraulic model cavitation performance.There is little difference in the runaway performance of the ZM60A hydraulic model and the TJ04-ZL-11 hydraulic model.Axial-flow pumps with the same speci-fic speed still have differences in performance,so it is important to consider various aspects of perfor-mance such as cavitation and runaway when selecting axial-flow pumps for engineering applications.This research has certain reference value for water pump selection in similar projects.
万方数据
维普
