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http://dx.doi.org/10.5293/KFMA.2009.12.5.013

A Research for Reducing Methods of Sub-synchronous Vibration in Water Turbines  

Park, Han-Yung (한국수자원공사)
Cho, Sung-Su (한국수자원공사)
Ra, Beyong-Pil (한국수자원공사)
Kim, Jin-Hun (한국수자원공사)
Park, Jong-Ho (충남대학교)
Lee, Yeon-Ju (한국수자원공사)
Publication Information
The KSFM Journal of Fluid Machinery / v.12, no.5, 2009 , pp. 13-18 More about this Journal
Abstract
In this paper, it is intended to figure out the features and causes of the processes of creation, growth and disappearance of spiral-vortex-flow generated in Francis turbines generally. The spiral-vortex-flow generated in draft tubes of the Francis turbines is estimated to have negative effects on power plant structure and to the people inside the building as well as to lead to a low-frequency-vibration driven by sub-synchronous whirl vibration. Therefore, we intend to investigate how much the low-frequency-vibration has an influence upon the powerhouse structure and practice analyzing the effectiveness on the previously-introduced methods to reduce side-effects of sub-synchronous whirl vibration and finally we intend to show the optimal solutions through this paper.
Keywords
Spiral vortex flow; Francis Turbine; Draft Tube; Sub-synchronous whirl vibration;
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  • Reference
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