Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Sensitivity Analysis of Design Parameters for Quadruple Offset Butterfly Valve by Operating Torque

작동 토크를 평가 함수로 하는 사중편심 버터플라이밸브 설계 파라미터 민감도 분석

  • Lee, Dong-Myung (Dept. of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, Soo-Young (Dept. of Naval Architecture and Ocean Engineering, Pusan National University)
  • 이동명 (부산대학교 조선해양공학과) ;
  • 김수영 (부산대학교 조선해양공학과)
  • Received : 2013.10.21
  • Accepted : 2014.04.02
  • Published : 2014.04.30
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Abstract

Because of industrial development, industrial facilities are becoming more complex and diversified. Plant industries are focused on productivity improvement, cost reduction, and product uniformity by simplifying production processes using automated control. Furthermore, plant industries require higher pressures and temperatures to improve energy efficiency. For this reason, the valves used in plants are operated under harsh conditions. Globe valves and gate valves are mainly used for high pressure these days. However, these valves have various problems, including low maintainability and high cost, due to structural problems. Therefore, butterfly and ball valve applications are increasing in industrial plants. This paper suggests a quadruple-offset butterfly valve that is applicable to bi-direction use, and the principle design parameters are suggested. The selected design parameters are an eccentric flange center line and shaft centerline(Offset 1), an eccentric seat centerline and disc shaft centerline(Offset 2), the angle between the flange centerline and seat wedge angle(Offset 3), the angle between the vertical direction of the disc shaft centerline and seat centerline(Offset 4), and the seat engagement angle. To analyze the interaction effect of the design parameters, ANOM and ANOVA were performed with an orthogonal array. The parameters were found to have effects in the following order: Offset 2, Offset 1, engagement angle, Offset 3, and Offset 4. The interaction between the parameters was insignificant.

Keywords

References

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Cited by

  1. Optimum seat design for the quadruple offset butterfly valve by analysis of variance with orthogonal array vol.38, pp.8, 2014, https://doi.org/10.5916/jkosme.2014.38.8.961