Alstom Technology Limited

General Electric Company

Ronald Wifling

Ulrich Rathmann

Sven Olmes

Thomas Heinz-Schwarzmaier

Michael Seemann

Ingolf Schulz

Christophe Doublet

Matthias Staempfli

Jose Antonio Cuevas-Alvarez

Tarun Kapoor

A gas turbine engine that includes an inlet volume flow control appliance and methods of operating the same are provided. The method includes operating the gas turbine engine with the inlet volume flow control appliance supplying a compressor inlet volume flow that is below a maximum compressor inlet volume flow. A mass flow of a liquid agent is added to a compressor gas mass flow while the gas turbine engine is operated with a compressor inlet volume flow below a maximum compressor inlet volume flow. The mass flow of a liquid agent may be controlled as a function of the pitch of variable inlet guide vanes. The method further comprises adjusting the volume flow control appliance to increase the compressor inlet volume flow and increasing the mass flow of liquid agent added to the compressor gas mass flow while the inlet volume flow control appliance increases the compressor inlet volume.

Gas turbine engine and methods of operating same

A gap seal () radially seals a gap () which extends axially and radially between two blades () of a turbomachine which are adjacent in the circumferential direction (). The two blades () have, in each case, an axially extending longitudinal slot (), which is open towards the gap (), on its respective blade root (). A band-form or strip-form sealing element () engages with its longitudinal sides () in the two longitudinal slots () and bridges the gap (). The one blade () has a projection () on its blade root (), which projects from the blade root () in the circumferential direction () and extends in the circumferential direction () and radially, at least in the region of the respective longitudinal slot (), and bridges an axial longitudinal end of the gap () in the process. The other blade () has a step-shaped recess () on its blade root (), complementary to the projection () of the one blade () and in which the projection engages. The projection () has a transverse slot () which extends in the circumferential direction () and is open towards the gap (). The sealing element () engages with an end face () in the transverse slot ().

Gap seal in blades of a turbomachine

A locking and fixing device for a heat shield element, which heat shield element can be arranged along a heat shield row axially directly next to at least one blade provided in a blade row and has, axially facing the blade, at least two projections of rib-like design which are spaced apart in the circular circumferential direction, are raised above a side wall section facing the blade and define a clear intermediate space which extends in the circular circumferential direction and into which a locking lug provided on the blade can be fitted. Further disclosed is at least one rib-like projection, on its side facing away from the clear intermediate space, providing an extension which extends in the circular circumferential direction, is connected to the projection and the side wall section and rises above the side wall section at most up to the rib height of the projection.

Locking and fixing device for a heat shield element for a rotor unit of a turbomachine

Growing community of inventors

Küssaberg, Germany

Ronald Wifling