Siemens Aktiengesellschaft

Klaus Rothe

Matthias Heue

Gerta Zimmer

Stefan Riemann

Rudolf Pötter

Martin Ophey

David Veltmann

Bernd Leu

Stephan Minuth

Kai Brune

Michael Schütz

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.

Steam cycle, and method for operating a steam cycle

A method for regulating a steam bypass valve is provided. The bypass valve is arranged in a steam line and the steam line includes a device for spraying water. The equation, is used to determine when to close the steam bypass valve. The steam bypass value is closed when tis smaller than a value &#x394;t. An actual volume of water {dot over (m)}, a desired volume of water {dot over (m)}and a maximum water-volume deficiency FBmax are used in the equation.

Method for regulating a valve

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Rees, Germany

Klaus Rothe