对旋轴流风机气动因素引起的振动机理及特征分析

Vibration Mechanism and Feature Analysis of Contra-rotating Axial Flow Fan Caused by Air Pulsation

气动因素引起的振动是对旋轴流风机的主要故障之一,从旋转失速、喘振、涡流振动、气流激振、耦合振动5个方面阐述了其振动的产生机理及特征,为风机振动故障诊断提供了参考,对提高风机运行经济性和安全性有重要意义。

Vibration Caused by air pulsation is one of the contra - rotating axial flow fan major failures. Expatiates vibration mechanism and corresponding feature produced by the five aspects such as rotating stall, surge, vortex vibration, air flow vibration and coupled vibration, h provides references for the failure diagnosises of the fan vibration, thus enhancing the fan economy efficiency and security.