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

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

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Received 05 December 2016

Published 30 December 2016