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Experimental study on gas-liquid transient flow in liquid-ring vacuum pump and its hydraulic excitation | |
Zhang, Renhui1,2![]() | |
2020-01 | |
发表期刊 | VACUUM
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ISSN | 0042-207X |
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 |
DOI | 10.1016/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 | |
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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