USE OF IMPERMEABLE SCREENS TO STABILIZE THE FLOW IN THE ANGLE CONTROL VALVE

image_print

J. of Mech. Eng., 2016, vol. 19, no. 4, pp. 19-24

DOI:   https://doi.org/10.15407/pmach2016.04.019

Journal Journal of Mechanical Engineering
Publisher A. Podgorny Institute for Mechanical Engineering Problems
National Academy of Science of Ukraine
ISSN 0131-2928 (Print), 2411-0779 (Online)
Issue Vol. 19, no. 4, 2016 (December)
Pages 19–24

 

Authors

A. I. Babayev, A. Podgorny Institute of Mechanical Engineering Problems of NASU (2/10, Pozharsky St., Kharkiv, 61046, Ukraine), e-mail: babayev_ai@mail.ru

V. N. Goloshchapov, A. Podgorny Institute of Mechanical Engineering Problems of NASU (2/10, Pozharsky St., Kharkiv, 61046, Ukraine)

 

Abstract

The results of a numerical study of the effect of installing 30–60 ° impermeable screens on the effective operation of steam turbine angle control valves are presented. As a result of CFD modeling, it was determined that the installation of a screen opposite the inlet nozzle allows the flow to be redistributed before it enters the valve channel, as a result of which the coefficient of losses in the diffuser and the relative pressure drop across the valve are reduced by 50%.

 

Keywords: control valve, impermeable screen, steam turbine

 

References

  1. Kostjuk, A. G., Kumenko, A. I., Nekrasov, A. L., Kalinin, S. V., & Medvedev, S. V. (2000). Eksperimentalnyiy analiz pulsatsiy davleniy v paropodvodyaschih organah turboagregata [Experimental analysis of the pressure fluctuations in the turbine elements of steam supply]. Teploenergetika – Thermal Engineering, 6, pp. 50–57.
  2. Kasilov, V. F., Kalinin, S. V., Gvozdev, V. M., Kartashov, V. S., & Emel’janov, E. M. (2001). Issledovanie vibroaktivnosti reguliruyuschih klapanov sistemyi paroraspredeleniya TsVD turbinyi K-200-130 [Investigation vibratory activity of control valves of steam distribution system of high pressure cylinder of turbine]. Teploenergetika – Thermal Engineering, 11, pp. 13–26.
  3. Orlik, V. G. & Minenkov, Y. E. (2004). Vozdeystvie avtokolebaniy reguliruyuschih klapanov parovoy turbinyi na vibratsionnoe sostoyanie rotora [The impact of self-oscillation control valve on the steam turbine rotor vibration state]. Elektricheskie stantsii – Power Technology and Engineering, no. 3, pp. 43–46.
  4. Seregin, V. A. (1984). Aerodinamicheskoe sovershenstvovanie klapanov parovyih turbin s tselyu snizheniya poter davleniya v sisteme parovpuska [Aerodynamic improvement of steam turbine valves to reduce pressure losses in the steam input system]. Ph. D. Thesis, Moscow Energetic Institute, Moscow, Russia.
  5. Zarjankin, A. E. & Simonov, B. P. (2005). Regulirujushhie i stoporno-regulirujushhie klapany parovyh turbin [Control and stop-control valves of steam turbines]. Russia, Moscow: MEI, 360 p.
  6. Zarjankin, A. E., Zarjankin, V. A., Seregin, V. A., Grigor’ev, E. J., & Rogalev, A. N. (2014). Razgruzhennyie drosselno-reguliruyuschie klapanyi novogo pokoleniya [Balanced throttling control valves of new generation]. Vestnik IGEU, no. 6, pp. 11–17.
  7. Gotovtsev, A. M. (2006). Razrabotka i issledovanie sistem stabilizatsii techeniya para v vyihlopnyih i vyinosnyih reguliruyuschih klapanah parovyih turbin [Development and research of systems of stabilization flow of steam in the exhaust and external control valves of steam turbines]. Ph. D. Thesis, Moscow Energetic Institute, Moscow, Russia.
  8. Clark, R. B., Kure-Jensen, J., Miyayashiki, H., & Ofuji, T. (1999). Combined valve configuration for steam cycle units. General Electric Company and Kabushiki Kaisha Toshiba, New York, USA and Yokohama, Japan, Pat. US005870896A.
  9. Chowdhury, A., Done, V., & Shah, V. (2010). Flow guided steam strainer for steam turbines valves. General Electric Company, New York, USA, Pat. US20110162735A1.
  10. Brandon, R. E. & Brandon, D. E. (1995). Steam turbine steam strainer. New York, USA, Pat. US005575618A.
  11. Clark, R. B., Kure-Jensen, J., Miyayashiki, H., & Ofuji, T. (1997). Combined valve configuration for steam cycle units. New York, USA, Pat. US005870896A.

 

Received 05 December 2016