Low-frequency Vibration In High-pressure Turbines Rotor

Recently, the low-frequency vibrations of high-pressure turbine rotors have become an important problem to be overcome in China. The latest investigation shows that there are many closedown accidents in power plants of China are due to the high vibration in high-pressure turbine rotor. Most of these faults is excited by steam disturbing force. The cause of steam whirl is deeply discussed in the paper and the measures of suppressing the malfunction are also suggested.