Alstom Technology Limited

Abb Alstom Power (schweiz) Ag

General Electric Technology Gmbh

Ansaldo Energia IP UK Limited

Hartmut Hähnle

Adnan Eroglu

Jürgen Gerhard Hoffmann

Alexander Stankowski

Remigi Tschuor

Ulrich Wellenkamp

Hans-Christoph Nienburg

Konrad Vogeler

Uwe Rüdel

Alexander Mahler

Lothar Schneider

Alen Markovic

Michele Pesce

Sriwickrama Prithiviraj Harasgama

Kenneth Hall

Hartmut Fenkl

Russell Bond Jones

Marion Oneil Duggans

Gregory Vogel

Michal Tomasz Prugarewicz

A thermal machine, especially a gas turbine, includes an annular combustor which is outwardly delimited by an outer shell and an inner shell () and through which a hot gas axially flows. The outer shell and inner shell () are each provided with a concentric cooling shroud () which is attached at a distance on their outer side, forming a cooling passage () through which cooling passage () cooling air flows in a direction which is opposite to the hot gas flow. The cooling of the combustor is improved by at least one of the cooling shrouds (), on the side on which the cooling air enters the cooling passage (), having an outwardly curved, rounded inlet edge () for improving the inflow conditions.

Thermal machine

The arrangements according to the invention and the method according to the invention serve to cool platforms in turbomachines. To this end, in two platforms,&prime; arranged directly next to one another and having a separating gap,running between the platforms, at least one cooling passage,is arranged along the separating gap,. In this case, the cooling passage,runs approximately parallel to the surface of the platforms,&prime;. The cooling passage,is preferably designed as a slit-like recess in at least one side wall adjacent to the separating gap,. If blades,&prime; are arranged on the platforms,&prime;, the cooling passage,expediently runs approximately centrally between the blades. In addition, the cooling passage,preferably has a course similar to the course of the blade profile.

Platform cooling in turbomachines

Growing community of inventors

Küssaberg, Germany

Hartmut Hähnle