Plant Journal (플랜트 저널)

Korea Institute of Plane Engineering and Construction (한국플랜트학회)
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A Case Study on the Reduction of Noise and Vibration at the Backpass Heat Surface in the Power Plant Boiler

300MW급 증기터빈의 베어링 윤활유 온도조정에 의한 오일휩 제거방법에 관한 연구

  • Hwang, Dal-Yeon (Department of Power Engineering, Graduate School of Hanyang University) ;
  • Moon, Seung-Jae (School of Mechanical Engineering, Hanyang University) ;
  • Lee, Jae-Heon (School of Mechanical Engineering, Hanyang University)
  • 황달연 (한양대학교 대학원 파워엔지니어링공학과) ;
  • 문승재 (한양대학교 기계공학부) ;
  • 이재헌 (한양대학교 기계공학부)
  • Received : 2008.08.25
  • Accepted : 2008.12.07
  • Published : 2008.12.30
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Abstract

The phenomena of oil whip in steam turbines take place for the unbalance force between a rotor shaft and bearing oil film. The several parameters that affect onset of oil whip have been well known. However, the major parameter of oil whip is shaft mis-alinement. A oil whip causes the high vibration and the shutdown of rotor system. We mostly stop the steam turbine to adjust a shaft re-alinement concerning oil whip. In this case, it needs many costs for maintenance and long shutdown times. In this study, we study and observe the oil whip of the 300MW steam turbine in many years and we conduct the field test for another steam turbine for reducing vibration from oil whip. The results of this study are that a oil whip takes place with a particular rotating speed or a particular turbine output and the oil temperature change is a very effective method for on-line oil whip treatment.

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