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

The Korean Society of Mechanical Engineers (대한기계학회)
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Effect of Differential Pressure on the Performance of Motor Operated Flexible Wedge Gate Valve

차압이 모터구동 Flexible Wedge형 게이트밸브의 성능에 미치는 영향

  • 김대웅 (한국전력공사 전력연구원 원자력발전연구소) ;
  • 유성연 (충남대학교 기계설계공학과)
  • Published : 2007.02.01
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Abstract

The mechanism of power transmission from motor torque to stem thrust and the operation characteristic of each stroke position are analyzed using the diagnostic signal, and effects of differential pressure on the performance of motor operated flexible wedge gate valve are investigated. Test facility consists of 76 mm motor operated valve(flexible wedge type), pump and pipe system. Static and dynamic test are performed separately, and two differential pressure conditions are applied in the dynamic test. To evaluate the performance of valve, test signals for the torque, thrust, current, voltage and stroke length are acquired by using UDS which is diagnosis device for motor operated valve, and each diagnostic signal is analyzed and compared. The characteristic of valve performance factors such as stem factor, rate of loading, valve factor, are evaluated, and these factors are found to be severely influenced by the fluid differential pressure.

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References

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Cited by

  1. A Study on the Bounding Value of Valve Performance Parameters for Motor Operated Flexible Wedge Gate Valve vol.10, pp.5, 2007, https://doi.org/10.5293/KFMA.2007.10.5.046
  2. A Study on the Packing Friction Estimation of Power-Operated Valves in Nuclear Power Plants vol.37, pp.11, 2013, https://doi.org/10.3795/KSME-B.2013.37.11.1053