Patent Number: 8,713,941

Title: Method for operating a multi-step steam turbine

Abstract: A method for operating a multi-step steam turbine operating in high temperature conditions is provided. The rotor is embodied as a welded construction including a first component and a second component. A coolant is supplied to the steam turbine after an intermediate state when the steam turbine is in the light-load or no-load phase. As a result, the thermal loads in the outflow area of the steam turbine are reduced.

Inventors: Glos; Stefan (Recklinghausen, DE), Heue; Matthias (Bochum, DE), Pfitzinger; Ernst-Wilhelm (Mulheim an der Ruhr, DE), Pieper; Norbert (Duisburg, DE)

Assignee: Siemens Aktiengesellschaft

International Classification: F01K 13/02 (20060101)

Expiration Date: 5/06/12018