모터구동 게이트밸브 열림행정시 차압 작용에 의한 부하율 연구

Study on the Rate-of-Loading by the Differential Pressure of Motor Operated Gate Valves in Opening Stroke

  • 김대웅 (한전 전력연구원 원전 설비 운영그룹) ;
  • 박성근 (한전 전력연구원 원전 설비 운영그룹) ;
  • 정래혁 (한전 전력연구원 원전 설비 운영그룹) ;
  • 이도환 (한전 전력연구원 원전 설비 운영그룹) ;
  • 홍승열 (한전 전력연구원 원전 설비 운영그룹)
  • 발행 : 2004.12.01

초록

The Rate-of-Loading(ROL) effect of motor operated gate valves causes a decrease in the thrust delivered at a specific torque by the actuator under dynamic flow ${\Delta}$P conditions as compared to the no-flow, static conditions. This effect needs to be studied for the quantitative evaluation of motor operated gate valve operability. This study is performed to verify the validity for the application of ROL in the evaluation of operability of motor operated gate valves for the opening stroke. The ROL is assessed on the basis of in-situ test data for the opening and closing strokes. The results show that the distribution of the ROL for the operling sake has a tendency to the negative value when DP is higher than 150psid.

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