Siemens Aktiengesellschaft

Siemnes Aktiengesellschaft

Uwe Zander

Norbert Thamm

Edwin Gobrecht

Michael Wechsung

Thomas Müller

Oliver Myschi

Norbert Henkel

Yevgen Kostenko

Kai Wieghardt

Andreas Ulma

Armin De Lazzer

Martin Kuhn

Henning Almstedt

Jan Walkenhorst

Sebastian Zahn

Rainer Quinkertz

Rudolf Pötter

Heinz Dallinger

Boris Bangert

Tobias Hogen

Christian Cukjati

Frank Deidewig

Werner-Holger Heine

Michael Diesler

Martin Grosse Düweler

Peter Dumstorff

Uwe Hoffstadt

A steam turbine having a cooling option, in which steam is taken from the flow channel, the steam cooling the thrust-compensating intermediate floor, being mixed with a small amount of live steam and being returned to the flow channel. A method cools the steam turbine, wherein steam is extracted from the high-pressure region and is fed to a space between the thrust-compensating partition wall and inner casing, wherein steam from the space between the thrust-compensating partition wall and the inner casing is fed via a first cross feedback passage to the high-pressure region.

Steam turbine and method for operating a steam turbine

A method for heating up a steam turbine or for keeping a steam turbine hot, which steam turbine has at least one pressure stage working at an initial pressure or intermediate pressure, at least one final pressure stage which is fluidically connected downstream of the pressure stage and works at a final pressure which is lower than the initial pressure or intermediate pressure, and at least one condenser which is connected downstream of the final pressure stage, wherein steam generated outside the steam turbine is introduced into the pressure stage. After flowing through the pressure stage and bypassing the final pressure stage, the steam is supplied directly to the condenser.

Method for heating up a steam turbine or for keeping a steam turbine hot

A cooling option for a steam turbine is provided, wherein the steam turbine includes a high-pressure zone and a medium-pressure zone, wherein the saturated steam streaming out of the high-pressure zone is discharged via a saturated steam conduit to a first pressure chamber in a second flow channel of the medium-pressure zone and thus the possibility of the saturated steam causing damage by corrosion and erosion in the high-pressure zone is prevented.

Disabling circuit in steam turbines for shutting off saturated steam

A turbomachine including a rotor and an inner interior housing an outer interior housing and an exterior housing, wherein the turbomachine has a first flow and a second flow arranged opposite the first flow for a high-pressure blading or medium-pressure blading, wherein the inner interior housing is made of a higher quality material tan the outer interior housing and solely accommodates the high-pressure and medium-pressure inflow regions including the balance piston is provided.

Steam turbine in a three-shelled design

Disclosed is a steam turbine comprising an exterior housing and an interior housing. The exterior housing and the interior housing are provided with a fresh steam supply duct. A rotor that encompasses several impeller blades and a thrust-compensating piston is rotably mounted within the interior housing. The interior housing is equipped with several guide blades that are disposed such that a flow duct comprising several blade stages, each of which comprises a series of impeller blades and a series of guide blades, is formed along a specific direction of flow. The interior housing is further equipped with a recirculation duct which is embodied as a pipe that communicates between a space located between the interior housing and the exterior housing and the flow duct downstream of a blade stage. The interior housing is additionally equipped with a supply duct that is configured as a pipe which communicates between the space located between the interior housing and the exterior housing and an antechamber of the thrust-compensating piston located between the thrust-compensating piston of the rotor and of the interior housing.

Steam turbine and method for operation of a steam turbine

The invention relates to a turbine shaft that is aligned in a longitudinal direction. Said shaft comprises a central region and two outer regions, which are fixed to the central region in the longitudinal direction. The central region is produced from a material with a higher heat resistance than the two outer regions.

Welded turbine shaft and method for producing said shaft

The invention relates to a method and a device for cooling thermally stressed regions in a turbo machine which has a live-steam feed line (), an inflow region (), a housing () and an exhaust-steam region (), a flow medium flowing through the turbo machine () and leaving in the exhaust-steam region () during operation, part of the flow medium from the live-steam feed line () being passed to the exhaust-steam region () and cooled by means of a heat exchanger () before entry into the turbo machine () and entering the turbo machine () via the inflow region (), thermally stressed regions that are located in the inflow region () being cooled by the f low medium that has been cooled in this way.

Method for cooling a turbo machine and turbo machine

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.

Turbine housing

Growing community of inventors

Mülheim an der Ruhr, Germany

Uwe Zander