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The study on the variable orifice spray of the steam power plant desuperheater

화력발전설비의 과열증기저감용 가변오리피스 분사 특성

  • Kim, Jeong-Sik (Division of Technical Innovation, Incheon Technopark) ;
  • Kim, Kwang-Hee (Division of Technical Innovation, Incheon Technopark) ;
  • Lee, Jong-Sun (Computer Aided Mechanical Design Engineering, DaeJin University)
  • 김정식 ((재)인천테크노파크 기술혁신본부) ;
  • 김광희 ((재)인천테크노파크 기술혁신본부) ;
  • 이종선 (대진대학교 컴퓨터응용기계설계공학과)
  • Received : 2012.09.24
  • Accepted : 2013.01.10
  • Published : 2013.01.31

Abstract

The steam power plant is becoming more important to supply a stable power lately. Desuperheater of the steam power plant facility plays a role in maintaining the proper superheat to avoid damage turbine power due to the superheated steam produced in the boiler. In this study, when the steam flows $530^{\circ}C$, 36.7 kg/s, 1.36 MPa in the 460mm pipe, variable orifice nozzle developed in Korea was carried out the performance analysis in coolant injection conditions of $150^{\circ}C$, 4.28 MPa. Findings, steam pipe coolant temperature was maintained at $446^{\circ}C$ and sprayed droplet size was verified by $50{\mu}m$ or less.

최근 안정적 전력수급을 위하여 화력발전에 대한 중요성이 더해 가고 있다. 화력발전설비 중 과열증기저감기는 보일러에서 생산된 과열증기가 발전터빈을 손상하지 않도록 적당한 과열도를 유지시키는 역할을 한다. 본 연구에서는 460mm 배관에 $530^{\circ}C$, 1.36 MPa의 증기가 흐를 때, 국내에서 개발된 가변오리피스노즐로 $150^{\circ}C$, 36.7 kg/s, 4.28 MPa의 냉각수를 분사하는 조건에서 성능해석을 수행하였다. 연구 결과, 증기관내 냉각수 온도가 $446^{\circ}C$로 유지되고 분무된 액적 크기가 $50{\mu}m$ 이하임을 확인하였다.

Keywords

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