Thin walled cooled hollow tip shroud
AssigneeUnited Technologies Corporation
InventorsJ. Tyson Balkcum, III, George Liang, Timothy J. Remley, Christopher Charles Williams, Hans R. Przirembel
Life of this patent
Estimating the term…
Abstract
The present invention relates to a lightweight shrouded turbine blade. The turbine blade comprises an airfoil section and a hollow blade tip shroud joined to the airfoil section. The hollow tip shroud is preferably a cast, compartmentalized structure and has a plurality of ribs acting as load bearing structures and defining a plurality of shroud core sections. Each of the shroud core sections communicates with a supply of cooling fluid and has a plurality of apertures for supplying cooling fluid to exterior portions of the shroud.
Claims9
A shrouded turbine blade comprising an airfoil section and a hollow blade tip shroud joined to said airfoil section, said shroud having a plurality of compartments, and said compartments having means for allowing a cooling fluid to flow through and over multiple external surfaces of said shroud.
A shrouded turbine blade comprising an airfoil section and a hollow blade tip shroud joined to said airfoil section, said shroud having a plurality of compartments, and each of said compartments having at least two apertures for allowing a cooling fluid to flow over an exterior portion of said shroud.
A shrouded turbine blade comprising:
- an airfoil section and a hollow blade tip shroud joined to said airfoil section;
- said hollow blade tip shroud having a plurality of ribs acting as load bearing structures and defining a plurality of hollow shroud core sections;
- means for supplying cooling fluid to each of said shroud core sections and each of said shroud core sections having at least one aperture for allowing said cooling fluid to flow over an exterior portion of said shroud;
- and
- each of said shroud core sections having a plurality of apertures in a density sufficient to create a desired cooling effect.
Dependencies are inferred from the claim text.