Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Effects of the Blockage Ratio of a Valve Disk on Loss Coefficient in a Butterfly Valve

밸브 디스크 차단비 변화가 버터플라이밸브의 손실계수에 미치는 영향에 관한 실험적 연구

  • 노병준 (전북대학교 기계항공시스템공학부, RICT) ;
  • 최희주 (퍼스텍(주)) ;
  • 이지근 (전북대학교 기계항공시스템공학부)
  • Published : 2008.01.01
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Abstract

The loss coefficient of the butterfly valve which allows partial opening of the valve at closed position and is applicable to the small-sized pipe system with the diameter of 1 inch was measured for the variation of the valve disk blockage ratio. Two different types of the valve disk configuration to adjust the blockage ratio were considered. One was the solid type valve disk of which the diameter was changed into the smaller size rather than the pipe diameter, and the other was the perforate type valve disk on which some holes were perforated. The results from two types of valve disk were compared to identify their characteristics in the loss coefficient distributions. The loss coefficient and the controllable angle of the valve disk were decreased exponentially with the decrease of the blockage ratio. In addition, the perforate valve disk had the effect on the higher loss coefficient rather than the solid type valve disk.

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References

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