Method for Warming-Up a Steam Turbine

Abstract

There is described a method for heating a steam turbine comprising a medium-pressure turbine section and/or a low-pressure turbine section, the discharge end of the medium-pressure turbine section being provided with a catchment device. Steam penetrating the medium-pressure turbine section during a starting process is retained at an outlet by means of a catchment device in such a way that the pressure of the steam increases in the medium-pressure turbine section. The steam that is discharged from the medium-pressure turbine section is retained, thus increasing the pressure and the temperature of the steam. Heat transfer from the steam to the thick-walled parts located on the medium pressure turbine section and the shaft of the medium-pressure turbine section is augmented, thus reducing the starting time of the steam turbine.

Dependencies are inferred from the claim text.