Turbine blade
AssigneeALSTOM Technology Ltd
InventorsCarlos Simon-Delgado, Hans-Peter Bossmann, Herbert Brandl
Life of this patent
Estimating the term…
Abstract
A turbine blade is provided having an airfoil and a platform manufactured in two separate pieces, which are joined together. The blade includes a seal, which is a mechanically decoupled seal, interposed between the airfoil and platform in a position closer to a hot gases path than a joint.
Claims15
A turbine blade, comprising:
- an airfoil;
- a platform manufactured in separate pieces from the airfoil, the airfoil and the platform being directly connected together at a portion separated from a sealing portion;
- and
- a mechanically decoupled seal is interposed between said airfoil and said platform in a position closer to a hot gases path than the portion where the airfoil and the platform are connected, wherein the platform has an inner surface portion, the inner portion being directly connected to a corresponding outer surface portion of the airfoil.
A turbine blade comprising an airfoil and a platform manufactured in separate pieces joined together at a joint, wherein a mechanically decoupled seal is interposed between said airfoil and said platform in a position closer to a hot gases path than the joint, wherein said seal comprises recessed seats indented in the airfoil and platform and facing one another, said seats housing a plate made of several layers connected to one another.
A turbine blade comprising an airfoil and a platform manufactured in separate pieces joined together at a joint, wherein a mechanically decoupled seal is interposed between said airfoil and said platform in a position closer to a hot gases path than the joint, wherein said seal has a protruding portion from the airfoil or platform having a knife edge that presses against a softer material of a corresponding portion of the platform or airfoil.
A turbine blade comprising an airfoil and a platform manufactured in separate pieces joined together at a joint, wherein a mechanically decoupled seal is interposed between said airfoil and said platform in a position closer to a hot gases path than the joint, wherein said seal comprises a labyrinth seal.
Dependencies are inferred from the claim text.