Steam cycle, and method for operating a steam cycle

US10167742B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Bernd Leu · Meerbusch, DE
• Martin Ophey · Straelen, DE
• Klaus Rothe · Rees, DE
• David Veltmann · Essen, DE
• Kai Brune · Rheinberg, DE
• Matthias Heue · Bochum, DE
• Rudolf Pötter · Los Altos, US
• Michael Schütz · Kirchehrenbach, DE

Key dates

• Filing date: Apr 16, 2015
• Grant date: Jan 1, 2019
• Expiry date: Jul 13, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01K9/04
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A steam cycle for a power station, and to a method for operating, in particular for starting, a steam cycle. The steam cycle has a high-pressure turbine, a condenser and a steam generator. The steam generator is connected to the high-pressure turbine via a first line. Live steam quick-closing valves and live steam regulating valves for supplying the high-pressure turbine are arranged in the direction of the steam flow between the steam generator and the high-pressure turbine. A starting line is arranged downstream of the high-pressure turbine in the direction of the steam flow, the starting line connecting a waste steam region downstream of the high-pressure turbine with the condenser. At least one regulator regulates a closing of a starting valve for sealing the starting line, and an opening of the live steam valve, depending on the rotational speed, a temperature and load state of the high-pressure turbine.