COOLING STRUCTURES FOR TURBINE ROTOR BLADE TIPS
First Claim
1. A rotor blade for a turbine of a combustion turbine engine, the rotor blade comprising an airfoil that includes a pressure sidewall and a suction sidewall defining an outer periphery and a tip portion defining an outer radial end, the tip portion including a rail that defines a tip cavity, wherein the airfoil includes an interior cooling passage configured to circulate coolant through the airfoil during operation, the rotor blade comprising:
- a slotted portion of the rail; and
at least one film cooling outlet disposed within at least one of the pressure sidewall and the suction sidewall of the airfoil, the film cooling outlet comprising a position that is adjacent to the tip portion and in proximity to the slotted portion of the rail.
2 Assignments
0 Petitions
Accused Products
Abstract
A rotor blade for a turbine of a combustion turbine engine having an airfoil that includes a pressure and a suction sidewall defining an outer periphery and a tip portion defining an outer radial end. The tip portion includes a rail that defines a tip cavity. The airfoil includes an interior cooling passage configured to circulate coolant. The rotor blade further includes: a slotted portion of the rail; and at least one film cooling outlet disposed within at least one of the pressure sidewall and the suction sidewall of the airfoil. The film cooling outlet includes a position that is adjacent to the tip portion and in proximity to the slotted portion of the rail.
34 Citations
24 Claims
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1. A rotor blade for a turbine of a combustion turbine engine, the rotor blade comprising an airfoil that includes a pressure sidewall and a suction sidewall defining an outer periphery and a tip portion defining an outer radial end, the tip portion including a rail that defines a tip cavity, wherein the airfoil includes an interior cooling passage configured to circulate coolant through the airfoil during operation, the rotor blade comprising:
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a slotted portion of the rail; and at least one film cooling outlet disposed within at least one of the pressure sidewall and the suction sidewall of the airfoil, the film cooling outlet comprising a position that is adjacent to the tip portion and in proximity to the slotted portion of the rail. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A rotor blade for a turbine of a combustion turbine engine, the rotor blade comprising an airfoil that includes a pressure sidewall and a suction sidewall defining an outer periphery and a tip portion defining an outer radial end, the tip portion including a rail that defines a tip cavity, wherein the airfoil includes an interior cooling passage configured to circulate coolant through the airfoil during operation, the rotor blade comprising:
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a slotted portion of the rail, the slotted portion of the rail including a plurality of slots spaced thereon; and a plurality of film cooling outlets disposed within at least one of the pressure sidewall and the suction sidewall of the airfoil, each of the plurality of film cooling outlets comprising a position that is adjacent to the tip portion and in proximity to the slotted portion of the rail, and each of the plurality of film cooling outlets fluidly communicating with the interior cooling passage; a plurality of grooves formed between the slotted portion of the rail and the plurality of film cooling outlets; wherein the plurality of slots and the plurality of film cooling outlets and the plurality of grooves are configured such that each of the plurality of grooves extends in an approximate radially outward direction from a position at or just outboard of one of the plurality of film cooling outlets to a position at or just inboard of an inboard edge of one of the plurality of slots. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification