Research on Vibration Fault Diagnosis Strategy for Commonly Supported Rotor of Turbogenerator

In recent years, the domestic unit commonly support shaft vibration failure occurred sometimes. Therefore, the stability of the shafting is a key issue concerned with the low load operation and flexible transformation of the turbine. Excessive unit vibration not only caused the movement of the unit, speeding up parts wear, resulting in fatigue damage parts, but also reduce the unit economy, more serious is to damage the unit, causing serious accidents. In order to solve the domestic unit commonly support shaft vibration fault multiple, in this paper, the vibration of the commonly shaft system of the domestic unit is classified, and the distribution ratio of the different types of commonly support shaft faults is calculated, and then, the fault type and its vibration characteristics are analyzed. At the same time, the solution of different types of faults is given with the engineering examples. Finally, the difference of vibration characteristics of commonly support shaft is summarized, and the direction of further research is put forward.