Tests for effects of impeller timing on vibration characteristics of a multi-stage centrifugal pump
TAN Minggao1, LIAN Yichao1, WU Xianfang2, LIU Houlin1
1.Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China；
2.School of Energy & Power Engineering, Jiangsu University, Zhenjiang 212013, China
Abstract：Impeller timing effect has an important influence on vibration performance of rotating machineries.Here, effects of impeller timing on vibration characteristics of a five-stage centrifugal pump were investigated with tests.8 test schemes were designed with the orthogonal design method, Vibration characteristics measurements were done at 5 different positions of the pump including its inlet axial direction, horizontal and vertical directions of its inlet and outlet.The test results showed that the influence of impeller timing effect on the pump’s vibration in horizontal direction is bigger than that in vertical direction, all measured points’ resonance frequencies are at 1×fn, 2×fn, 3×fn and 4×fn; impeller timing effect affects all resonant amplitudes significantly, the maximum variations of resonant amplitudes at 1×fn, 2×fn, 3×fn and 4×fn under different test schemes are 17.7%, 10.0%, 33.2% and 47.4%, respectively; comparing the results of 5 test schemes reveals adjusting timing positions of the 2nd and 3rd stage impellers of the pump can obtain better vibration characteristics of the whole pump.
谈明高1，廉益超1，吴贤芳2，刘厚林1. 叶轮时序对多级泵振动特性影响的试验测试[J]. 振动与冲击, 2020, 39(3): 1-7.
TAN Minggao1, LIAN Yichao1, WU Xianfang2, LIU Houlin1. Tests for effects of impeller timing on vibration characteristics of a multi-stage centrifugal pump. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(3): 1-7.
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