STUDYING THE TORSIONAL VIBRATIONS OF TURBINE SHAFT TRAINS

摘要

To ensure the dynamic reliability of shaft trains of power plants, it is necessary to consider all factors causing damage of rotors and reducing their life. The torsional vibrations of turbine shafts have been studied inadequately. Studies of such vibrations generated in different ways are discussed. A method for determining the natural frequencies of the torsional vibrations of shaft trains of a shut-down turbine occurring upon starting the barring gear is developed and implemented. A multi-channel system for long-term monitoring of torsional vibrations and static twisting of turbine shafts was designed and put into pilot operation.