Numerical Research on Hydraulically Generated Vibration and Noise of a Centrifugal Pump Volute with Impeller Outlet Width Variation

Liu, Houlin; Ding, Jian; Dai, Hanwei; Tan, Minggao; Xiao-chen, Tang

doi:10.1155/2014/620389

Cited by 14 publications

(12 citation statements)

References 29 publications

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“…Impeller outlet width [112,113] • The decrease of impeller outlet width weakens the pressure fluctuations intensity and leads to the decrease of vibration and noise.…”

Section: Pump Structures References Key Findingsmentioning

confidence: 99%

A Review of the Flow-Induced Noise Study for Centrifugal Pumps

Guo

Gao

2020

Applied Sciences

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Flow-induced noise is a significant concern for the design and operation of centrifugal pumps. The negative impacts of flow-induced noise on operating stability, human health and the environment have been shown in many cases. This paper presents a comprehensive review of the flow-induced noise study for centrifugal pumps to synthesize the current study status. First, the generation mechanism and propagation route of flow-induced noise are discussed. Then, three kinds of study methodologies, including the theoretical study of hydrodynamic noise, numerical simulation and experimental measurement study, are summarized. Subsequently, the application of the three study methodologies to the analysis of the distribution characteristics of flow-induced noise is analyzed from aspects of the noise source identification and comparison, the frequency response analysis, the directivity characteristics of sound field and the noise changing characteristics under various operating conditions. After that, the analysis of the noise optimization design of centrifugal pumps is summarized. Finally, based on previous study results, this paper puts forward the unsolved problems and implications for future study. In conclusion, the information collected in this review paper could guide further study of the flow-induced noise of centrifugal pumps.

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“…Impeller outlet width [112,113] • The decrease of impeller outlet width weakens the pressure fluctuations intensity and leads to the decrease of vibration and noise.…”

Section: Pump Structures References Key Findingsmentioning

confidence: 99%

A Review of the Flow-Induced Noise Study for Centrifugal Pumps

Guo

Gao

2020

Applied Sciences

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“…The pump is expected to run at the high efficiency zone under the mean head of the pump station, and the designed flow rate is to be met under the design head and under the maximum head the safety and stable operation must be unconditionally satisfied. And better cavitation characteristics are also considered during the pump selection and their performance comparison, as discussed in [4][5][6].…”

Section: The Requirement Of Pump Selectionmentioning

confidence: 99%

Pump Selection and Performance Prediction for the Technical Innovation of an Axial-Flow Pump Station

Zhu

Zhou

et al. 2018

Mathematical Problems in Engineering

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Axial-flow pumps are widely used in every sector of China. After many years of operation, the aging of mechanical and electrical facilities poses threats to their steady and safe operation. Taking the technical innovation of an axial-flow pump station as an example, the study is focused on the pump selection and performance prediction. The pump similarity law and specific speed were applied to guide the pump selection based on the designed head and discharge. The performances of pump models were compared and it is suggested for the technical innovation that when the selected model pump is adopted, the impeller diameter is kept at 3100 mm and the rotational speed is reduced from 150r/min to 136.4r/min to improve its cavitation performance. A threedimensional pumping system model was established by using software Pro/E and CFD analyses were conducted to predict the hydraulic performance of the pumping system for the evaluation of technical innovation. It is shown through the comparison of computed results with model test results that the designed flow rate corresponding to the designed head can be fully satisfied with the selected pump and stronger pumping capacity can be prospected at the designed and mean lifting head. The pumping system model tests, in comparison between the original and the selected model pump, indicate that when the innovated pump station operates under characteristic heads, the pumping system efficiency can be raised by more than 3 percentages, and the cavitation allowance can be decreased by 0.90m; thus, better engineering and economic benefits can be prospected through the technical innovation.

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“…Zhang et al 11 obtained vibration signals at different flow rate of a slope volute pump by experiment, and compared with the vibration characteristics of the traditional spiral volute pump. Liu et al 12 adopted CFD/FEM analysis method and CFD/ FEM/BEM coupling method to detect the sound radiation and vibration of the volute under fluid excitation force. Results showed that the sound pressure effect on the structure of the centrifugal pump was not significant.…”

Section: Introductionmentioning

confidence: 99%

Vibration control of a marine centrifugal pump using floating raft isolation system

Liu

et al. 2019

Journal of Low Frequency Noise, Vibration and Active Control

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In order to study the influence of floating raft isolation system (FRIS) on the vibration characteristics of marine pump, a marine centrifugal pump with/without FRIS under the same operation condition, which specific speed is 66.7, was experimentally measured. The maximum efficiency of the pump is 75.8%, which is under 1.2 Qd. Results show that the characteristic frequencies in the vibration spectrums of the pump with/without FRIS are APF (axial passing frequency), the BPF (blade passing frequency) and its high-order harmonic frequency. After installing FRIS, under 0.8 Qd, 1.0 Qd and 1.2 Qd, the vibration intensity of the pump at inlet flange is slighter than that at pump base and larger than that at pump bracket. The vibration intensity at outlet flange is slighter than that at the pump bracket and larger than that at pump body, and the vibration intensity at connecting plate is the lowest. The vibration velocity level of pump base decreases with the increase of flow rate, the maximum vibration intensity at M1–M4 is reduced by 88% than that without FRIS, and the maximum vibration velocity of the APF at M1–M4 is reduced by 83.3% than that without FRIS.

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Numerical Research on Hydraulically Generated Vibration and Noise of a Centrifugal Pump Volute with Impeller Outlet Width Variation

Cited by 14 publications

References 29 publications

A Review of the Flow-Induced Noise Study for Centrifugal Pumps

A Review of the Flow-Induced Noise Study for Centrifugal Pumps

Pump Selection and Performance Prediction for the Technical Innovation of an Axial-Flow Pump Station

Vibration control of a marine centrifugal pump using floating raft isolation system

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