Experimental study on gas-liquid transient flow in liquid-ring vacuum pump and its hydraulic excitation
Zhang, Renhui1,2; Guo, Guangqiang1
2020-01
发表期刊VACUUM
ISSN0042-207X
卷号171
摘要

To study the gas-liquid flow in liquid-ring vacuum pump and its vibration characteristics, the test system was developed for flow visualization and vibration monitoring. The flow structure was captured by high-speed camera, and the vibration sensors were mounted on the bearing house and the pump casing respectively. The study shows that the vibration amplitude trends of the bearing house and pump casing are both a quadratic curve during start-up period, and the vibration amplitude of the pump casing is closely related to the unstable gas-liquid interface. With the increase of impeller rotation speed, more and more bubbles penetrate to the liquid ring, and the wakes are becoming more intense. Under different operating conditions, the main vibration of pump casing is highly relevant to the transient gas liquid flow. The main characteristic frequencies vibration of the bearing house is caused by mechanical resonance. The vibration level of the bearing house is significantly higher than the pump casing at all conditions. The vibration level of the pump casing increases with the decrease of flow rate and the increase of rotation speed for the transient flow. The vibration level of the bearing house reaches the maximum when the rotation frequency is consistent with the natural frequency.

关键词Liquid-ring vacuum pump Gas-liquid two-phase flow Flow visualization Vibration characteristics Experimental study
DOI10.1016/j.vacuum.2019.109025
收录类别SCI ; SCIE ; EI
语种英语
资助项目National Key Research and Development Program of China[2016YFB0200901] ; National Natural Science Foundation of China[51979135]
WOS研究方向Materials Science ; Physics
WOS类目Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号WOS:000502894000031
出版者PERGAMON-ELSEVIER SCIENCE LTD
EI入藏号20194307587515
EI主题词Two phase flow
EI分类号402.3 Residences - 601.2 Machine Components - 618.2 Pumps - 631.1 Fluid Flow, General - 742.2 Photographic Equipment - 801.4 Physical Chemistry
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/64150
专题能源与动力工程学院
通讯作者Guo, Guangqiang
作者单位1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China;
2.Key Lab Fluid Machinery & Syst, Lanzhou 730050, Gansu, Peoples R China
第一作者单位能源与动力工程学院
通讯作者单位能源与动力工程学院
第一作者的第一单位能源与动力工程学院
推荐引用方式
GB/T 7714
Zhang, Renhui,Guo, Guangqiang. Experimental study on gas-liquid transient flow in liquid-ring vacuum pump and its hydraulic excitation[J]. VACUUM,2020,171.
APA Zhang, Renhui,&Guo, Guangqiang.(2020).Experimental study on gas-liquid transient flow in liquid-ring vacuum pump and its hydraulic excitation.VACUUM,171.
MLA Zhang, Renhui,et al."Experimental study on gas-liquid transient flow in liquid-ring vacuum pump and its hydraulic excitation".VACUUM 171(2020).
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