한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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100 kW급 증기터빈 설계기술 개발에 관한 연구

A Study of the Design Technology for Developing a 100kW Class Steam Turbine

  • 김영철 (한국기계연구원 시스템다이나믹스연구실) ;
  • 안국영 (한국기계연구원 신재생청정시스템연구실) ;
  • 조종현 (경상대학교 대학원) ;
  • 조수용 (경상대학교 항공기부품기술연구센터(기계항공공학부))
  • 투고 : 2009.03.09
  • 심사 : 2009.03.30
  • 발행 : 2009.06.01
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초록

Small scale steam turbines are used as mechanical drivers in chemical process plant or power generators. In this study, a design technology was developed for a 100kW class steam turbine which will be used for removing $CO_2$ from the emission gas on a reheated cycle system. This turbine is operated at a low inlet total pressure of $5\;kgf/cm^2$. It consists of two stages and operates at the partial admission. For the meanline analysis, a performance prediction method was developed and it was validated through the performances on the operating small steam turbines which are using at plants. Their results showed that the output power was predicted within 10% deviation although the steam turbines adopted in this analysis were operated at different flow conditions and rotor size. The turbine blades was initially designed based on the computed results obtained from the meanline analysis. A supersonic nozzle was designed on the basis of the operating conditions of the turbine, and the first stage rotor was designed using a supersonic blade design method. The stator and second stage rotor was designed using design parameters for the blade profile. Finally, Those blades were iteratively modified from the flow structures obtained from the three-dimensional flow analysis to increase the turbine performance. The turbine rotor system was designed so that it could stably operate by 76% separation margin with tilting pad bearings.

키워드

참고문헌

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피인용 문헌

  1. vol.13, pp.1, 2010, https://doi.org/10.5293/KFMA.2010.13.1.063
  2. Design and Performance Analysis of Steam Turbine for Variations of Degree of Reaction vol.35, pp.12, 2011, https://doi.org/10.3795/KSME-B.2011.35.12.1391