Detection of the Flow State for a Centrifugal Pump Based on Vibration

Jiaxing Lu, Xiaobing Liu, Yongzhong Zeng, Baoshan Zhu, Bo Hu, Shouqi Yuan and Hong Hua
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Jiaxing Lu: Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China
Xiaobing Liu: Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China
Yongzhong Zeng: Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China
Baoshan Zhu: Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
Bo Hu: Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
Shouqi Yuan: National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China
Hong Hua: Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China

Energies, 2019, vol. 12, issue 16, 1-18

Abstract: A combined numerical and experimental method study was performed to detect the inner flow state for a type of centrifugal pump. It was found that the inlet attack angles of blades in an impeller have a great influence on the flow instabilities in a centrifugal pump. The mechanism of the rotating stall in the impeller channel was explained. Meanwhile, flow state identification with vibration (FSIV) was proposed to detect the flow instabilities in a centrifugal pump. The relationship between the external vibration and the inner flow state has been established by FSIV. The characteristics and mechanism of the vibration produced by the flow instabilities in a centrifugal pump were investigated. It was found that the hump, the rotating stall, the backflow, the occurrence of unstable flow, and the cavitation in the centrifugal pump can be effectively detected by applying the vibration signals, which helps to obtain safe and steady operating conditions for the system.

Keywords: centrifugal pump; flow instabilities; experiment; vibration; detection (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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