Experimental Investigation of Transient Characteristics of a Double Suction Centrifugal Pump System during Starting Period

Faye Jin, Zhifeng Yao, Duanming Li, Ruofu Xiao, Fujun Wang and Chenglian He
Additional contact information
Faye Jin: College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
Zhifeng Yao: College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
Duanming Li: China Irrigation and Drainage Development Center, Beijing 100054, China
Ruofu Xiao: College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
Fujun Wang: College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
Chenglian He: China Water Resources Beifang Investigation Design and Research Co. Ltd, Tianjin 300222, China

Energies, 2019, vol. 12, issue 21, 1-28

Abstract: The starting phase for pumps in water transportation pipelines is crucial and has significant transient characteristics which merit further study in order to evaluate the operational stability of the pumping system. This paper presents the results of a study in which the relative steady operating conditions and starting period of a large double-suction centrifugal pump were monitored in real time, including pressure fluctuations, shaft run-out and vibration at the bearing. The transient characteristics of a double-suction centrifugal pump under different operating conditions have been analyzed using fast Fourier transform (FFT) and continuous wavelet transform (CWT). Results indicate broadband frequency components within the spectrum of pressure fluctuations in the volute casing under all test conditions, and the central frequency of the broadband frequency gradually decreases as flow rate increases and approaches the blade frequency, which is the primary reason for an increase in blade-frequency amplitude. This may produce a vibration frequency that is similar to the natural frequency of a certain part of the double-suction centrifugal pump during the starting period, which causes the resonance phenomenon. The radial force is also large during the starting period, which causes eccentric wear of the seal ring at the impeller inlet.

Keywords: double suction centrifugal pump; transient characteristic; starting period; pressure fluctuation; vibration (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 (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/21/4135/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/21/4135/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:21:p:4135-:d:281655

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().