Dynamic analysis of slender rotor of vertically suspended centrifugal pumps due to various hydraulic design factors

Mohammadzadeh, Maziar; Arbabtafti, Mohammadreza; Shahgholi, Majid

doi:10.1007/s00419-018-1463-x

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…The vibration problem of multistage centrifugal pumps is mainly reflected in the rotor system. When the rotor speed is close to the critical speed, it may even cause resonance and cause huge harm 11 , 12 . Under the premise of avoiding the resonance of the rotor system, it is of great significance to study the vibration characteristics of multistage centrifugal pumps to ensure their safe operation.…”

Section: Introductionmentioning

confidence: 99%

Vibration analysis of a high-pressure multistage centrifugal pump

Zhang

Liu

Yang

et al. 2022

Sci Rep

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High-pressure multistage centrifugal pumps have been widely used in modern industry and required low vibration and noise. In this study, modal analysis of the rotor system of a seven-stage centrifugal pump was carried out numerically by introducing fluid force to ensure that the centrifugal pump would not resonate. A vibration test bench was established to investigate the characteristics with flow rates of 0.8Qd, 1.0Qd, and 1.2Qd, and the vibration data of ten measuring points were collected. The period of the vibration at the bearing was found to be around 20 ms and the period was related to the shaft frequency (SF) and the blade passing frequency (BPF). The vibration of the pump casing was mainly determined by the SF, two times the SF, and two times the BPF. Mechanical motion is the main factor causing pump vibration, and fluid unstable motion is also an important cause.

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Section: Introductionmentioning

confidence: 99%