UNIFLOW STEAM GENERATOR AND METHOD OF UNIFLOW STEAM GENERATOR OPERATION

摘要

FIELD: heating.;SUBSTANCE: invention is intended for steam generation and may be used in power engineering. Evaporating heating surface is located in uniflow steam generator. Evaporating surface includes multiple steam generator pipes that are connected in parallel for fluid medium flow and segment of heating surface that is arranged for flow of fluid medium in counterflow to gas flue and the next segment of heating surface connected on the side of fluid medium and on the side of furnace gas upstream heating surface segment. Outlet on the side of heating surface segment fluid medium, in direction of furnace gas, is positioned so that temperature of saturated steam established in evaporating heating surface deviates by less than specified maximum deviation, 70°C at most from furnace gas temperature, in the place of heating surface segment outlet. Method of uniflow steam generator operation consists in the fact that fluid medium is drained from evaporating heating surface, in direction of furnace gas, in place where temperature of furnace gas deviates by less than specified maximum deviation, 70°C at most, from the one established during operation.;EFFECT: provision of high stability of steam generator from temperature distortions.;9 cl, 2 dwg