公开(公告)号：US10196939B2

公开(公告)日：2019-02-05

申请号：US14807216

申请日：2015-07-23

Applicant: ALSTOM Technology Ltd

Inventor： Volker Schüle ,  Stephan Hellweg ,  Reinhard Leithner ,  Niels Brinkmeier

IPC: F01K7/34 ,  F01K7/24 ,  F22B35/10 ,  F22D1/32 ,  F01K9/02 ,  F22B29/06

Abstract: The once-through boiler includes a water supply and at least an economizer, an evaporator superheater. No valves are provided between the economizer, the evaporator and the superheater. The high-pressure turbine includes a control valve. The method for low load operation of a power plant with a once-through boiler and a high pressure turbine includes providing a parameter indicative of the stable operation of the once-through boiler in once-through operation, and on the basis of this parameter adjusting the control valve in order to regulate the pressure within the economizer and evaporator and/or adjusting the temperature of the water supplied to the economizer.