Cooling system having reduced mass pin fins for components in a gas turbine engine
AssigneeSiemens Energy, Inc.
InventorsChing-Pang Lee, Nan Jiang, John J. Marra
Life of this patent
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Abstract
A cooling system having one or more pin fins with reduced mass for a gas turbine engine is disclosed. The cooling system may include one or more first surfaces defining at least a portion of the cooling system. The pin fin may extend from the surface defining the cooling system and may have a noncircular cross-section taken generally parallel to the surface and at least part of an outer surface of the cross-section forms at least a quartercircle. A downstream side of the pin fin may have a cavity to reduce mass, thereby creating a more efficient turbine airfoil.
Claims14
A cooling system for a gas turbine engine, comprising:
- at least one first surface defining at least a portion of the cooling system;
- and
- at least one pin fin extending from the at least one first surface;
- wherein the at least one pin fin has a noncircular cross-section taken generally parallel to the at least one first surface, wherein at least part of an outer surface of the cross-section forms at least a quartercircle;
- wherein the at least one pin fin comprises at least one three quarter circular outer surface positioned on an upstream side of the at least one pin fin;
- wherein the at least one pin fin includes a three quarter circular downstream surface forming a three quarter circular cavity within the at least one pin fin, wherein the three quarter downstream surface is coupled to the outer surface with linear surfaces.
A cooling system for a gas turbine engine, comprising:
- at least one first surface defining at least a portion of the cooling system;
- and
- at least one pin fin extending from the at least one first surface to a second inner surface;
- wherein the at least one pin fin has a noncircular cross-section taken generally parallel to the at least one first surface, wherein at least part of an outer surface of the cross-section forms at least a quartercircle;
- wherein the at least one pin fin is formed from first and second sections divided by a cavity generally aligned with a longitudinal axis of cooling fluid flow.
An airfoil for a gas turbine engine, comprising:
- a generally elongated hollow airfoil formed from an outer wall, and having a leading edge, a trailing edge, a pressure side wall, a suction side wall positioned generally opposite from the pressure side wall;
- a cooling system in the generally elongated hollow airfoil, comprising at least one first surface defining at least a portion of the cooling system;
- and
- at least one pin fin extending from the at least one first surface and contacting a second inner surface;
- wherein the at least one pin fin has a noncircular cross-section taken generally parallel to the at least one first surface, wherein at least part of an outer surface of the cross-section forms at least a quartercircle;
- wherein the at least one pin fin comprises at least one three quarter circular outer surface positioned on an upstream side of the at least one pin fin and includes a three quarter circular downstream surface forming a three quarter circular cavity within the at least one pin fin, wherein the three quarter downstream surface is coupled to the outer surface with linear surfaces.
An airfoil for a gas turbine engine, comprising:
- a generally elongated hollow airfoil formed from an outer wall, and having a leading edge, a trailing edge, a pressure side wall, a suction side wall positioned generally opposite from the pressure side wall;
- a cooling system in the generally elongated hollow airfoil, comprising at least one first surface defining at least a portion of the cooling system;
- and
- at least one pin fin extending from the at least one first surface and contacting a second inner surface;
- wherein the at least one pin fin has a noncircular cross-section taken generally parallel to the at least one first surface, wherein at least part of an outer surface of the cross-section forms at least a quartercircle;
- wherein the at least one pin fin is formed from first and second sections divided by a cavity generally aligned with a longitudinal axis of cooling fluid flow.
Dependencies are inferred from the claim text.