Mtu Aero Engines Gmbh

Mtu Aero Engines Ag

Wilfried Weidmann

Moritz Wirth

Martin Fischer

Eberhard Knodel

A housing-side structure of a turbomachine, in particular of a gas turbine, including an in particular segmented jacket ring (), which carries an abradable lining for radially outer ends of rotor-side moving blades of a moving blade ring, wherein the jacket ring () carrying the abradable lining is connected by means of at least one constriction () to a stator-side housing part (), which is radially adjacent to the jacket ring () on the outside and the jacket ring is thermally decoupled from said stator-side housing.

Housing-side structure of a turbomachine

A gas turbine having a rotor which includes a turbine rotor, a shaft and a compressor rotor, the turbine rotor having at least one rotor disk and a rotor cone leading from the or a rotor disk to the shaft, the downstream end of the shaft being rotatably supported in a bearing having a bearing chamber, the interior space of the shaft being designed as a flow channel for bearing-chamber sealing air, and the space surrounding the rotor cone upstream of the same being designed as a flow space for cooling air is disclosed. In the region of the rotor connection, the shaft exhibits an expanded portion, at whose upstream end, openings are provided to allow cooling air to enter, and, at whose downstream end, openings are provided to allow cooling air to exit into the space between the bearing chamber and the rotor cone, a wall separating the streams of the cooling air and of the sealing air in the shaft interior from one another.

Gas turbine having a rotor including a turbine rotor, expanded shaft and a compressor rotor

The invention relates to a rotor for a turbomachine, in particular a low-pressure turbine rotor for a gas turbine, having at least one stage, each stage comprising a rotor disk having rotor blades attached to the rotor disk, and the rotor disk of each stage being removably connected either to oppositely situated rotor disks of adjoining stages or to a rotor connection of a rotor shaft by at least one respective attachments. According to the invention, the, or each of the, attachment means extends through the rotor disk of at least one stage, whereby the, or each of the, attachment means is guided with radial play into at least one borehole passing through the respective rotor disk, so that an interior borehole surface is not subjected to load or force.

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Erdweg, Germany

Wilfried Weidmann