Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Siemens Aktiengellschaft

Siemens Aktiengesellschaft-muenchen

Siemnes Aktiengesellschaft

Edwin Gobrecht

Norbert Henkel

Erich Schmid

Matthias Heue

Michael Wechsung

Uwe Zander

Rainer Quinkertz

Karsten Peters

Rainer Newald

Uwe Juretzek

Gerta Zimmer

Michael Schöttler

Heinrich Oeynhausen

Martin Bennauer

Matthias Migl

Stefan Riemann

Volker Simon

Andreas Bode

Henning Almstedt

Helmut Pollak

Jan Walkenhorst

Marc Borowski

Boris Bangert

Eva Windecker

Andreas Logar

Michael Rziha

Jan Greis

Tobias Hogen

Laurence Crane

Andreas Feldmueller

Rolf Langbein

Rainer Neumann

Joe Hannon

Juergen Havemann

Martin Hallekamp

Achim Hammann

Henri Diesterbeck

Dirk Knudsen

Lars Homeier

A steam-turbine unit has a steam turbine and an option for cooling the steam turbine by forced cooling, wherein cooling air is drawn through the steam turbine via a suction device and a drainage line of the live-steam valve is used as the access option.

Method for cooling down a steam turbine

A power plant and method for preserving a power plant, the power plant having a steam turbine with a shaft, further including a condenser mounted downstream of the steam turbine in the direction of flow of the steam, a vacuum pump mounted downstream of the condenser, a compressed steam system with shaft seals, and a compressed steam supply line extending into the shaft seals; a first nitrogen line extends into the condenser, and a second nitrogen line as well as a recirculation line that branches off the vacuum pump extend into the compressed steam supply line.

Preservation method

A method for operating a combined cycle power plant, wherein the combined cycle power plant has a gas turbine and a steam turbine and also a shutting-down device, and wherein, for shutting down the gas turbine and the steam turbine, the gas turbine and the steam turbine are operated within a time window that extends from the beginning of the shutting-down procedure at a first time to the falling of the steam temperature to a lower limit value at a second time by the shutting device in such a way that the gas turbine and the steam turbine are relieved substantially at the same time and the block power falls to zero, thermal energy that is stored in the combined cycle power plant preventing immediate falling of a steam temperature to operation below a minimum power output of the gas turbine within the time window.

Method for shutting down a gas turbine and a steam turbine of a combined cycle power plant at the same time

A method for starting a steam turbine system having a steam generator, a steam turbine which is connected to the steam generator and includes at least two turbine stages that, at the time of starting the steam turbine system, have different outlet temperatures, a condenser connected to the steam turbine and a consumer driven by the steam turbine, in which the steam generated in the steam generator is used to start the steam turbine, wherein, until the steam generated in the steam generator reaches a predetermined temperature that at least corresponds to the temperature requirement of the turbine stage with the higher outlet temperature, only the turbine stage with the lower outlet temperature is operated, and in that the turbine stage with the higher outlet temperature is brought on-line only once the predetermined temperature has been reached.

Method for starting a steam turbine system

A method for testing an overspeed protection mechanism of a single-shaft combined-cycle plant that includes, during testing, an electrical load is first connected to the generator and the load is disconnected and a trigger threshold value can be achieved at a test moment in time, thereby triggering the overspeed protection mechanism.

Method for testing an overspeed protection mechanism of a single-shaft combined-cycle plant

A steam turbine with a shaft seal is provided. The shaft seal steam barrier is supplied with a slight excess pressure. In order to avoid complex additional devices necessary for liquefying the water vapor once again, a condensation chamber, which is sealed from the surrounding air as well as from the steam barrier chamber with brush seals, is provided between the steam barrier chamber and the surrounding air. The condensation chamber is constructed in such a manner that the heat, developing in the interior thereof, is discharged to the outside.

Shaft seal for steam turbines

The invention relates to a method for starting a gas and steam turbine system which comprises a gas turbine system which comprises at least one gas turbine, in addition to at least one steam turbine system which comprises at least one steam turbine and at least one steam system. Heat produced by the working fluid and which is released in the gas turbine is guided to the steam system in order to produce steam which drives the steam turbine. According to the invention, during starting, the gas turbine is started prior to the steam turbine and the steam turbine is started in the presence of the first steam in the system and is impinged upon by said steam.

Method for starting up a gas and steam turbine system

A method for prior determination of a life consumption of individual components in a fossil-fuelled power generating installation, with respect to a load cycling process to be carried out is provided. An apparatus is also provided for prior determination of a life consumption of individual components in a fossil-fuelled power generating installation, with respect to a load cycling process to be carried out. Actual variables which characterize the state of the power generating installation before a load cycling process are determined. A driving gear of the power generating installation which creates the load cycling process is set in advance. The load cycle time is calculated based upon the driving gear and the characterizing variables. A predicted life consumption for at least one of the individual components for the selected driving gear is also calculated.

Method and apparatus for determination of the life consumption of individual components in a fossil fuelled power generating installation, in particular in a gas and steam turbine installation

The invention relates to a method for starting a steam turbine installation which comprises at least one steam turbine and at least one steam-generating installation for generating steam for driving the steam turbines, the steam turbine installation having at least one casing component, which has an initial starting temperature of more than 250&#xb0; C., the temperature of the steam and of the casing component being continually measured, and the casing component of the steam turbine installation being supplied with steam from the starting time point onwards. The starting temperature of the steam is lower than the temperature of the casing component and the temperature of the steam is increased with a start transient and the staring temperature is chosen such that the change in temperature per unit of time of the casing component lies below a predefined limit. The temperature of the casing component initially decreases, until a minimum is reached and then increases.

Method for starting a steam turbine installation

The invention relates to a method for heating a steam turbine comprising a high-pressure turbine section and a medium-pressure turbine section and/or a low-pressure turbine section. Said method is characterized by the essential aspect that the high-pressure turbine section is impinged upon by steam having relatively great conductivity while the medium-pressure turbine section or the low-pressure turbine section remains closed during said impingement following a cold start. As soon as the conductivity drops below a certain value, the medium-pressure turbine section or the low-pressure turbine section is also impinged upon by steam.

Method for warming-up a steam turbine

A method for determining an approximate value for a parameter characteristic of the fatigue state of a component as a result of a time-varying stress to which it is subjected by means of a number of load cycles should, itself, during comparatively lengthy stress cycles, enable a prognosis concerning the current fatigue state of the component, this prognosis being, in particular, adapted to the needs and suited for the real-time determination of maintenance intervals. To this end, in addition to optionally already fully completed load cycles, a first partially completed load cycle is also taken into consideration during the determination of the parameter, whereby temporary stress values for phases that have not yet been run through of the partially completed load cycle are, together with a predetermined fixed value, taken into consideration.

Method for determining a parameter characteristic of the fatigue state of a part

A method and a device are for operating a steam turbine in which includes several no-load or light-load phases. All phases are supplied with steam in order to ensure good preheating. The supply of a phase is selected in such a way that the phase produces the least possible output, preferably no output. The enthalpy differential between the entrance to and exit from the phase is thus preferably reduced to zero.

Method and device for operating a steam turbine comprising several no-load or light-load phases

A turbo machine, especially a steam turbine, has a main axis, an inner housing, an outer housing, a top region, and a bottom region. Between the outer housing and the inner housing a radial gap is formed, which has a narrow part in the bottom region.

Turbo machine with an inner housing and an outer housing

A turbine casing has an inner casing and an outer casing which surrounds the inner casing to form an intermediate space. In order to avoid a casing distortion, a forced flow of a medium located within the intermediate space is provided. A method is also described which relates to avoiding a temperature based casing distortion during the shut-down of a turbine.

Turbine casing

The present invention relates to a turbine housing ( ) having an inner housing ( ) which is surrounded by an outer housing ( ), the inner housing ( ) and the outer housing ( ) each having a first, upper partial region ( ) and a second, lower partial region ( ), and having an inner-housing outer surface ( ) and an outer-housing inner surface ( ) which are positioned opposite one another, with a distance between them. At least in a part of the first partial region ( ), the inner-housing outer surface ( ) has a lower heat transfer through radiation to the opposite outer-housing inner surface ( ) than at least in a part of the second partial region ( ) of the inner-housing outer surface ( ). This can be achieved by means of suitable surface coatings in the respective regions which have different absorption and/or emission coefficients (a , a ). The result is a temperature compensation between the upper side and the lower side of the corresponding housing ( ), so that distortion of the housing during cooling is avoided.

Growing community of inventors

Ratingen, Germany

Edwin Gobrecht