Gas turbine blade and method for producing a gas turbine blade
AssigneeSiemens Aktiengesellschaft
InventorPeter Tiemann
Life of this patent
Estimating the term…
Abstract
A gas turbine blade includes an inlet edge region of a platform. Eroded into it is a slot which runs parallel to the flow-on edge and into which cooling air is introduced in an impact-cooled manner from the platform under side and is discharged in a film-cooling manner from the platform top side. This results in an efficient cooling system for the flow-on edge region of the platform. The method for producing a gas turbine blade includes producing ducts leading into the slot using laser drilling, the slot wall of the slot being protected by a Teflon strip.
Claims15
A gas turbine blade comprising:
- a platform portion;
- and
- a profile portion adjoining a top side of the platform portion, wherein the platform portion includes an inlet edge and an outlet edge for gas around the gas turbine blade, and wherein the platform portion includes a slot extending parallel to the inlet edge, the slot including at least one issue duct leading through the platform portion to an underside of the platform portion, located opposite of a top side of the platform portion, wherein a wall is formed between the slot and the inlet edge.
A method for producing a gas turbine blade with a platform portion and with a profile portion adjoining a top side of the platform portion, the platform portion including an inlet edge and an outlet edge for gas around the gas turbine blade, comprising:
- producing a slot, extending parallel to the inlet edge, in the platform portion, wherein a wall is formed between the slot and the inlet edge;
- and
- producing at least one duct in the platform portion, the at least one duct issuing into the slot and leading through the platform portion to an underside of the platform portion located opposite of a top side platform portion.
Dependencies are inferred from the claim text.