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The Performance of a New Pressure Reducing Valve Automatically Preventing Pressure Equalization

자동 균압 방지 감압밸브의 감압성능에 관한 연구

  • Park, Yong-Hwan (Dept. of Fire and Disaster Protection Engineering, Hoseo Univ.) ;
  • Kim, Sang-Wook (Dept. of Fire and Disaster Protection Engineering, Hoseo Univ.) ;
  • Kim, Beom-Kyu (Dept. of Fire and Disaster Protection Engineering, Hoseo Univ.)
  • 박용환 (호서대학교 소방방재학과) ;
  • 김상욱 (호서대학교 소방방재학과) ;
  • 김범규 (호서대학교 소방방재학과)
  • Received : 2012.11.29
  • Accepted : 2013.02.01
  • Published : 2013.02.28

Abstract

It is necessary to use pressure reducing valves to provide required water pressure in water-based fire suppression systems of the tall buildings. In many cases, however, pressure reducing valves lose their function due to the phenomenon of pressure equalization caused by valve leak. This study carried out performance evaluation of the recently developed pressure reducing valve to prevent pressure equalization and found it can maintain designed pressure reducing ratio within 11% variation and prevent pressure equalization by automatic self-lock function of the piston.

초고층건물의 수계소화설비에 있어서 적정 방수압력을 제공하기 위해서는 감압밸브의 사용이 필수적이다. 하지만 많은 경우 밸브 내 누설로 인한 균압 현상으로 인해 감압 기능을 상실하는 경우가 많다. 본 연구에서는 최근 개발된 균압 현상을 자동으로 방지해 줄 수 있는 새로운 개념의 감압밸브에 대한 성능평가를 수행하였다. 그 결과 다양한 설정 조건에도 불구하고 설계 감압비가 최대 약 11% 범위 내에서 유지되었으며, 피스톤의 자동 셀프 록(self-lock) 기능에 의해 균압 현상도 방지할 수 있는 것으로 나타났다.

Keywords

References

  1. NFSC 102, "Standard for Stand-pipe System", National Emergency Management Agency (2007).
  2. NFSC 102, "Standard for Sprinkler System", National Emergency Management Agency (2007).
  3. NFPA 103, "Standard for Pressure Reducing Valve" (2008).
  4. S. W. Park, "A Characteristics of Structure and Adaptation of Pressure Reducing Valve", International Journal of Air-Conditioning and Refrigeration, lecture in sanitation divisions (1995).
  5. C. O. Lee, "A Study on the Pressure Reducing Valve For Fire Protection", Journal of Korean Institute of Fire Science & Engineering, Vol. 4, No. 2, pp. 58-63 (2008).
  6. www.spiraxsarco.co.kr.
  7. Y. J. Yeo, "Engineering for Fire Suppression System Using Water", Korea Fire Laboratory (2006).

Cited by

  1. Study on Analysis Method for Fire Safety Test of Hydrant Reducing Valve for Offshore Plant vol.38, pp.6, 2014, https://doi.org/10.3795/KSME-A.2014.38.6.601