한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)

  • 제20권9호
  • /
  • Pages.63-69
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  • 2021
  • /
  • 1598-6721(pISSN)
  • /
  • 2288-0771(eISSN)
한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
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1인치 볼 밸브 및 글로브 밸브에 대한 개도율에 따른 손실계수(k) 비교에 관한 연구

Comparison of Loss Coefficient using 1-inch Ball and Glove Valve Opening Ratio

  • 강창원 (한국남동발전(주)) ;
  • 이중섭 (한국승강기대학교 승강기공학부) ;
  • 이치우 (경상국립대학교 자동차공학과)
  • 투고 : 2021.02.03
  • 심사 : 2021.07.23
  • 발행 : 2021.09.30
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초록

This study aims to determine the flow characteristics of a one-inch small ball valve and glove valve used in industrial plants. The flow was changed through an experimental equipment, and the internal flow characteristics of the valves were compared. Considering the pressure drop, the decrease in the slope of the ball valve based on the degree of the valve opening was relatively greater than that of the glove valve; further, the slope of the glove valve was gentle while the pressure drop was high. The flow velocity of the ball valve remains consistent after the valve was opened by 70%, whereas the flow velocity of the glove valve constantly increased. The valve loss factor of the ball valve was relatively low compared with that of the glove valve. When the valve was opened by 20%, which is the beginning stage of the valve opening, the valve loss factor of the ball valve was high and gradually became low. This is a structural problem of the ball valve, and the loss factor is significant because the flow path installed at the ball valve has a considerably small area. However, the overall loss factor of glove valve is high because it has a complicated structure of flow path.

키워드

과제정보

This work was supported by Gyeongsang National University Grant in 2020~2021.

참고문헌

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