Siemens Aktiengesellschaft

Deutsches Zentrum Fur Luft-Und Raumfahrt E.v.

Kai Wieghardt

Friedhelm Schmitz

Andreas Ulma

Uwe Zander

Torsten-Ulf Kern

Norbert Thamm

Henning Almstedt

Heinz Dallinger

Thomas Helmis

Stefan Essink

Mark-Andre Schwarz

Rainer Tamme

Michael Kleinhaus

Werner-Holger Heine

Bernd Czerwik

A method is provided of producing a housing with two layers. The method includes casting an inner casting formed as an inner layer, and then casting an outer casting. The inner casting is used as a wall and the outer casting is formed as an outer layer. The inner layer is made of a more heat resistant material than the outer layer. Hooked formations are fitted on the inner casting in order to improve an integral bonding to the outer layer.

Process for producing a turbine housing and turbine housing

A steam supply for a turbomachine with an inner housing and an outer housing is provided. The steam supply includes an inner pipe and an outer pipe, a cooling medium inlet opening disposed in the outer pipe and a cooling medium entering thereby into space between the inner pipe and the outer pipe, and the inner pipe being cooled thereby.

Steam feed for a steam turbine

The invention relates to the use of a thermal insulating layer for a housing of a steam turbine in order to even out the deformation behavior of different components based on different heatings of the components.

Use of a thermal barrier coating for a housing of a steam turbine, and a steam turbine

A steam turbine has a two-shell housing, including an outer casing and an inner casing arranged therein, as well as a pipe that extends through the outer casing for supplying and/or removing steam to or from the inner casing, the pipe being provided with a pair of apertures arranged opposite each other on the inner casing. According to the invention, a first steam supply or discharge pipe can be connected to a first aperture, and the second aperture is closed by a cover.

Steam turbine

Disclosed is a steam turbine with a casing, wherein a turbine shaft having a thrust-compensating piston is rotatably mounted inside the casing and directed along a rotation axis, wherein a flow passage is formed between the casing and the turbine shaft. The turbine shaft has in its interior a cooling line for directing cooling steam in the direction of the rotation axis. The cooling line, on one end, is connected to at least one inflow line for the inflow of cooling steam into the cooling line from the flow passage, and on the other end, is connected to an outflow line for directing cooling steam onto a lateral surface of the thrust-compensating piston. An essential aspect is, the cooling steam discharging onto the lateral surface of the thrust-compensating piston mixes with some of the live steam and is directed back into the flow passage via a return line arranged in the casing.

The invention relates to a steam power plant comprising at least one steam heater for preparing compressed steam, a main turbine, which is connected downstream of the steam heater, is arranged on a main drive shaft and is a high-pressure or medium-pressure turbine, and a secondary turbine, which is interposed between the steam heater and the main turbine and is arranged on a secondary drive shaft, characterized in that the secondary turbine has an at least 50% higher operating speed when compared with a nominal speed of the main turbine.

Steam power plant and also method for retrofitting a steam power plant

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 components of a steam turbine comprising a thermal insulation layer and a metallic anti-erosion layer that is applied to the thermal insulation layer.

Component with thermal barrier coating and erosion-resistant layer

In fluid machines frequently gaps between movable and stationary structural parts have been sealed off. Frequently so-called labyrinth packings are used, whereby sealing strips brush against the opposite structural part. To this end, a brush layer is configured as a porous coating that can be detached from the opposite structural part. The inventive system can be advantageously used in virtually any fluid machines.

Growing community of inventors

Bochum, Germany

Kai Wieghardt