基于振动分析的离心泵结构优化

Structural Optimization of the Centrifugal Pump Based on Vibration Analysis

摘要: 离心泵在船舶与海洋工程中应用广泛，降低其运行振动和噪声，对绿色船舶设计具有很大的现实意义。本文以某型离心泵为研究对象，对其进行振动测试，根据对测试结果的分析，确定振动超标的原因可能是由轴承故障或结构共振所造成的，经计算分析排除轴承故障，因此对共振结构进行重新设计。结果表明：经对共振结构的调整，低频段总振级降低2.5 dB左右。

Abstract: The centrifugal pump is widely used in ship and ocean engineering, and reducing the operation noise and vibration is of great practical significance to the green ship design. In this paper, as the research object, a certain type of centrifugal pump was tested for the vibration. According to the analysis of test results, the cause of excessive vibration may be the bearing fault or the structure resonance. Through the calculation and analysis, the bearing fault was excluded, so the resonance structure was re-designed. The results showed that the total vibration level of low frequency re-duced about 2.5 dB after the resonance structure was adjusted.