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http://dx.doi.org/10.5050/KSNVN.2002.12.1.036

A Study on the Chattering Phenomena of a Check Valve  

유기완 (전북대학교 공과대학 기계항공시스템공학부)
이준신 (한전 전력연구원 원자력연구실)
김태룡 (한전 전력연구원 원자력연구실)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.12, no.1, 2002 , pp. 36-41 More about this Journal
Abstract
The cause and the elimination method for the chattering phenomena were investigated in a check valve attached to the exit of an auxiliary cooling water pump in a Korean nuclear powerplant. From the site experiment and the numerical calculation, the incident angle of the disk was so small that it was not able to produce the sufficient lifting force to overcome the gravitational component of the disk weight. Moreover, it turned out that the installation position was not symmetric for the secondary vortical flow generated inside the elbow so that the flow structure had strongly unstable flow characteristics. From this study, the tapping noise and the chattering phenomena were eliminated exactly by changing the incidence angle of the valve disk and the installation position of the calve body.
Keywords
Check Valve; Chattering Phenomena; Tapping Noise; Flowinduced Vibration; Auxiliary Cooling Water Pump;
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  • Reference
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