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임펠러 및 플로팅 링 실이 원심 펌프의 성능에 미치는 영향

Effects of Impellers and Floating Ring Seals on Performance of Centrifugal Pumps

  • 김대진 (한국항공우주연구원 터보펌프팀) ;
  • 최창호 (한국항공우주연구원 터보펌프팀) ;
  • 홍순삼 (한국항공우주연구원 터보펌프팀) ;
  • 김진한 (한국항공우주연구원 터보펌프팀)
  • 투고 : 2011.04.19
  • 심사 : 2011.06.24
  • 발행 : 2011.10.01

초록

임펠러 및 플로팅 링 실의 형상이 원심 펌프의 성능에 미치는 영향을 수류 시험 결과를 토대로 연구하였다. 연구 대상이 된 펌프는 30 톤급 및 75 톤급 액체로켓엔진용으로 개발된 단단 원심형 펌프로 연소실에 추진제(액체산소, 케로신)를 공급하는 터보펌프의 일부이다. 펌프의 양정은 임펠러 출구 폭 및 날개 개수, 날개의 출구 각도의 영향을 받는 것으로 나타났다. 또한 개발된 펌프는 플로팅 링 실의 간극에 따라 그 효율에 차이가 있었으며, 크기 증가에 따른 효율 증가 효과는 크게 나타나지 않았다.

The effects of an impeller and floating ring seals on the performance of centrifugal pumps are investigated on the basis of their test results using water. The pumps are single-staged centrifugal pumps developed for 30-ton- and 75-ton-class liquid rocket engines, and are components of a turbopump that supplies propellants (liquid oxidizer and kerosene) to the combustion chamber. The exit width of the impellers and the numbers and exit angles of the impeller blades are found to have influences on the pump heads. In addition, the pumps have different efficiencies according to the gaps between the floating ring seals and the impellers, whereas the pump size seems to have less effect on the efficiency.

키워드

참고문헌

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