The Analysis for the Airflow Exciting-Vibration Force of Control Stage of Steam Turbine

CHAI Shan; ZHANG Yao-ming; MA Hao; QU Qing-wen; ZHAO You-qun

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Article Navigation > Applied Mathematics and Mechanics > 2001 > 22(7): 706-712

CHAI Shan, ZHANG Yao-ming, MA Hao, QU Qing-wen, ZHAO You-qun. The Analysis for the Airflow Exciting-Vibration Force of Control Stage of Steam Turbine[J]. Applied Mathematics and Mechanics, 2001, 22(7): 706-712.

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The Analysis for the Airflow Exciting-Vibration Force of Control Stage of Steam Turbine

Research Institute for Science and Technology, Shandong Institute of Technology, Zibo, Shandong 255012, P. R. China

Received Date: 2000-03-21
Rev Recd Date: 2001-01-08
Publish Date: 2001-07-15

Abstract

Abstract

Based on the hydrodynamics, the airflow exciting-vibration force of control stage of steam turbine is studied by using the momentum theorem. A formulation for calculating the air exciting-vibration force of the control stage of steam turbine is deduced first by using theoretical analysis method and taking all the design factors of vane and nozzles into consideration. Moreover the exciting-vibration forces in different load cases are discussed respectively.
- rotor dynamics,
- exciting-vibration force,
- airflow

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References(9)

References

[1]	Thomas H J.Unstable oscillations of turbine rotors due to steam leakage in the sealing glands and the buckets[J].Bulletin Scientifique A J M,1958,71:34-37.
[2]	Alford J S.Protecting turbomachinery from self-excited rotor whirl[J].ASME Journal of Engineering for Power,1965,33(5):333-344.
[3]	Urlichs K.Clearance flow-generated transverse force of the rotor of thermal turbomachines[A].Translated as NASA TM 77292,1983.
[4]	Wohlrab R.Experiments determination of gas flow conditioned force at turbine stages and their effects on the runing stability of simple rotor[A].Translaled as NASA TM 77293,1983.
[5]	Vance J M,Laudadio F J.Experimental measurements of Alford force in axial flow turbomachery[A].ASME paper,1984,84-GT-140.
[6]	晏砺堂,朱梓根,李其汉.高速旋转机械振动[M].北京:国防工业出版社,1994.
[7]	张文.转子动力学中的若干近代力学问题[J].中国科学基金,1994,3:227-229.
[8]	姚福生.汽轮机动叶片上激振力的分析[J].机械工程学报,1965,13(1):1-22.
[9]	柴山,张耀明,马浩,等.大型旋转机械气流激振力研究综述[J].山东工程学院学报,1998,12(4):1-7.