Paper Title:
Frequency Reliability Analysis of Francis Turbine-Generator Units Based on Nonlinear Vibration
  Abstract

This paper studies the frequency reliability of the main shaft system of Francis turbine-generator units based on nonlinear vibration. Taking the generator and turbine as an integrated system, the nonlinear coupling dynamic equations of the system are established by the finite element method. According to the dynamic equations, the frequent factors of system are obtained by the method of multiple scales. The criterion is used that the difference between the natural frequencies and driving frequencies including the frequent factors should be less than specific values. The reliability mode and the safety probability of the main shaft system of Francis turbine-generator units are defined as a series mode, and the frequency reliability analysis method for avoiding the resonance is proposed. Finally, an example is presented.

  Info
Periodical
Materials Science Forum (Volumes 628-629)
Edited by
Dongming Guo, Jun Wang, Zhenyuan Jia, Renke Kang, Hang Gao, and Xuyue Wang
Pages
233-238
DOI
10.4028/www.scientific.net/MSF.628-629.233
Citation
Z.J. Li, X.J. Yang, G.W. Cai, X.S. Liu, "Frequency Reliability Analysis of Francis Turbine-Generator Units Based on Nonlinear Vibration", Materials Science Forum, Vols. 628-629, pp. 233-238, 2009
Online since
August 2009
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Price
$32.00
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