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Numerical Analysis of Flow Characteristies inside innes part of Fluid Control Valve System

유동해석을 통한 유체제어벨브 시스템의 내부 유동 특성 분석

  • Son, Chang-Woo (Division of Mechanical Engineering, Incheon National University) ;
  • Seo, Tae-Il (Division of Mechanical Engineering, Incheon National University) ;
  • Kim, Kwang-Hee (Design Support Center, Incheon Business Information Technopark) ;
  • Lee, Sun-Ryong (Technology Research Center, Unilok Corporation)
  • Received : 2018.03.22
  • Accepted : 2018.06.01
  • Published : 2018.06.30

Abstract

The worldwide semi-conductor market has been growing for a long time. Manufacturing lines of semi-conductors need to handle several types of toxic gases. In particular, they need to be controlled accurately in real time. This type of toxic gas control system consists of many different kinds of parts, e.g., fittings, valves, tubes, filters, and regulators. These parts obviously need to be manufactured precisely and be corrosion resistant because they have to control high pressure gases for long periods without any leakage. For this, surface machining and hardening technologies of the metal block and metal gasket need to be studied. This type of study depends on various factors, such as geometric shapes, part materials, surface hardening method, and gas pressures. This paper presents strong concerns on a series of simulation processes regarding the differences between the inlet and outlet pressures considering several different fluid velocity, tube diameters, and V-angles. Indeed, this study will very helpful to determine the important design factors as well as precisely manufacture these parts. The EP (Electrolytic Polishing) process was used to obtain cleaner surfaces, and hardness tests were carried out after the EP process.

세계적으로 반도체장비 시장은 오래전부터 성장하고 있다. 유체제어시스템은 반도체 제조 장비에 사용되어지는 배관을 집적화시켜 유체의 공급을 제어할 수 있도록 모듈화, 소형화한 시스템이다. 반도체의 제조공정은 여러 종류의 맹독성 가스를 필수적으로 다루어야 한다. 특히 실제 작업 공정에서는 이러한 맹독성 가스의 정밀한 제어가 필요하다. 이러한 맹독성가스를 제어하는 시스템은 피팅, 밸트, 튜브, 필터, 레귤레이터 등 다양한 부품들로 구성되어 있다. 이 부품들은 누출 없이 고압 가스를 계속 제어해야 하기 때문에 정밀하게 제조되어야 하고 내부식성이 있어야 한다. 이를 위해 금속 블록 및 금속 가스킷의 표면 가공 및 경화 기술을 연구해야 한다. 본 논문에서는 이러한 유체제어시스템에서 가장 기본이 되는 V-Block의 직경, 유량, 각도를 다르게 설계하여 내부에서 어떠한 유동흐름을 보이는지 파악하고자 하며, 유체제어시스템에서 가장 기본이 되는 유체제어벨브 시스템의 내부 유동해석을 통하여 안정적인 유량을 공급할 수 있는 설계의 최적화에 대해 연구하고 분석하였다.

Keywords

References

  1. J.T. Han, T.H. Lee, D.S. Park, M.R. Son, The Role of Material Gases and Gas Supply System Applied in Semiconductor Process, The Korean Institute of Gas, pp. 292-301, 1997.
  2. G.H. Lee, E.S. Lee, M.K. Lee, J.S. Kim, I.J. Bae, Internal Flow Analysis and Structural Design in Plastic Automatic Control Valve for the Semiconductor Chemical Liquid, Journal of the Korean Society of Manufacturing Technology Engineers, 2012.
  3. J. A. Davis, M.Stewart, Predicting Globe Control Valve Performance Part 1:CFD Modeling, ASME Journal of Fluids Engineering, vol. 124, pp. 772-777, 2002. DOI: https://doi.org/10.1115/1.1490126
  4. J. A. Davis, M. Stewart, Predicting Globe Control Valve Perfomance Part: Experimental Verification, ASME Journal of Fluids Engineering, Vol. 124, pp. 778-783, 2002. DOI: https://doi.org/10.1115/1.1490126
  5. Y.R. Lee, S.K. Gi, S.G. Jang, Jang, M. J. Do, A Study on Flow Characteristics with the Variation of Fluid Pipe Line in Hydrogen Regulator, Korean Society for Precision Engineering, pp. 939-940, 2017.
  6. M.H.Chung, S.M. Yang, H.Y. Lee, 3D Flow Analysis of Globe Valve with Air Operated Actuator, Korean Society For Fluid Machinery, pp. 7-13, 2005. DOI: https://doi.org/10.5293/KFMA.2005.8.4.007
  7. C. W. Kang, K. S. Yang, "REYNOLDS NUMBER EFFECTS ON TURBULENT PIPE FLOW PART1. MEAN FLOW FIELD AND LOW-ORDER STATISTICS," Journal of Computational Fluids Engineering, 2011.
  8. J. Kim, P. Moin, R. Moser, "Turbulence statics in fully developed channel flow at low Reynolds number," J. Fluid Mech, 1987. DOI: https://doi.org/10.1017/S0022112087000892
  9. S.H. Yoo, B.G. Huh, D.G. Kang, K.W. Seul, Flow Analysis of Gas Transport Test in the Safety System Piping, The Korean Society of Mechanical Engineers, pp. 4153-4157, 2013.