Effects of gas volume fraction variation on vibration characteristics of different types multiphase pumps

被引：0
|
作者：
Zhu G. [1 ]
Men Y. [1 ]
Feng J. [1 ]
Li K. [1 ]
Yan S. [1 ]
Li C. [1 ]
机构：
[1] School of Water Conservancy and Hydropower Engineering, Xi'an University of Technology, Xi'an
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2022年 / 41卷 / 17期
关键词：
kurtosis; multiphase pump; root mean square; time-frequency characteristics; vibration;
D O I：
10.13465/j.cnki.jvs.2022.17.023
中图分类号：
学科分类号：
摘要：
Studying effects of gas volume fraction ( GVF) on vibration characteristics of key parts of multiphase pump is of great significance to improve operation stability of multiphase pumps. Here, firstly, vibration measurements for key parts of two multistage gas-liquid mixed transport pumps of PR pump and PH pump with different impeller types under different GVF conditions were performed. Then, time-frequency characteristics of vibration signals were counted. Finally, the feature quantity with two-dimension of root mean square and kurtosis was constructed as an index to perform feature analysis of vibration signals. The results showed that when the relative GVF increases from 0% to 100% , vibrations at bearing box body and pump inlet of 2 types mixed transport pumps increase，bearing box body has the largest vibration intensity，and the maximum vibration intensity at bearing box of PH pump is higher than that of PR pump ； increase in GVF makes vibration energy at PR pump bearing box more obviously propagate to PR pump inlet ； on the two-dimensional feature quantity diagram for vibration signals at bearing box，PR pump and PH pump can be clearly distinguished with zero kurtosis line ； kurtosis values of vibration signals at all measuring points of PR pump are higher than those of PH pump，so the possibility of PR pump having faults is higher than that of PH pump under current test conditions. © 2022 Chinese Vibration Engineering Society. All rights reserved.
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页码：185 / 192
页数：7
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