Vibration Characteristics and Damage of Turbine Generator Shaft Rubbing

Rong Pei Zhang

doi:10.4028/www.scientific.net/AMM.697.210

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 697Vibration Characteristics and Damage of Turbine...

Vibration Characteristics and Damage of Turbine Generator Shaft Rubbing

Abstract:

An abnormal journal vibration occurred when a 660MW turbo generator unit was in daily operation. It was identified that rubbing vibration had taken place based on the behavior of the journal vibration and the temperature change of lubricating oil. The rubbing was located inside the bearing box between the HIP rotor and the LP rotor. However, no elimination measures had been taken in time because the damage caused by rubbing was underestimated. Few months later a full inspection revealed that the LP rotor shaft had been worn out with a 70mm wide and 28mm deep groove, which greatly weakened the strength of the LP rotor. The analysis presented here may help in diagnosing and understanding rubbing-vibration-related problems in similar situations.

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Periodical:

Applied Mechanics and Materials (Volume 697)

Pages:

210-213

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.697.210

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Online since:

November 2014

Authors:

Rong Pei Zhang*

Keywords:

Rubbing, Turbo Generator, Vibration

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* - Corresponding Author

References

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