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US 8,281,604 B2Granted
Divergent turbine nozzle
AssigneeGeneral Electric Company
InventorsMark Broomer, Victor Hugo Silva Correia, Robert Francis Manning, Stephen Kin-Keung Tung, Bhanu Mahasamudram Reddy
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Abstract
A turbine nozzle includes a row of vanes extending radially in span between inner and outer bands. The vanes include opposite pressure and suction sidewalls and opposite leading and trailing edges. Each vane includes an inner pattern of inner cooling holes and an outer pattern of outer cooling holes distributed along the leading edge. The inner and outer holes diverge toward the corresponding inner and outer bands to preferentially discharge cooling air.
Claims23
A gas turbine engine comprising:
- an annular combustor configured for discharging combustion gases;
- a turbine nozzle following said combustor and including a row of nozzle vanes extending radially between laterally surrounding inner and outer bands;
- a row of turbine rotor blades following said nozzle for extracting energy from said combustion gases;
- each of said nozzle vanes including circumferentially opposite pressure and suction sidewalls extending radially in span between said bands and extending axially in chord between opposite leading and trailing edges;
- and
- each vane further including inner and outer patterns of corresponding inner and outer cooling holes distributed along said leading edge and inclined oppositely inwardly toward said inner band and outwardly toward said outer band, respectively, wherein said inner cooling holes are disposed along a lower half of said leading edge adjacent said inner band, and said outer cooling holes are disposed along an upper half of said leading edge adjacent said outer band.
3 more elements
A gas turbine nozzle comprising:
- a row of hollow nozzle vanes extending radially in span between laterally surrounding inner and outer bands;
- each vane including circumferentially opposite pressure and suction sidewalls extending radially between said bands and extending axially in chord between leading and trailing edges;
- and
- each vane further including an inner pattern of inner cooling holes distributed along said leading edge and inclined inwardly toward said inner band, and a diverging outer pattern of outer cooling holes distributed along said leading edge and inclined outwardly toward said outer band, wherein said inner cooling holes are disposed along a lower half of said leading edge adjacent said inner band, and said outer cooling holes are disposed along an upper half of said leading edge adjacent said outer band.
1 more element
Dependencies are inferred from the claim text.