EFFUSION COOLED DUAL WALL GAS TURBINE COMBUSTORS
First Claim
1. A gas turbine engine combustor, comprising:
- an inner liner having an upstream end and a downstream end, the inner liner extending in an axial direction between the upstream and downstream ends;
a dual wall outer liner having a hot wall, a cold wall at least partially surrounding the hot wall, an upstream end, and a downstream end, the outer liner extending in the axial direction between the upstream and downstream ends, the outer liner being spaced apart from, and at least partially surrounding, the inner liner;
a dome assembly coupled between the upstream ends of the inner and outer liners to define a combustion chamber between the inner liner and the hot wall of the outer liner; and
a plurality of rows of effusion cooling holes disposed in the hot wall, including a first row of effusion cooling holes disposed at a tangential angle of between about 70° and
about 90°
relative to the axial direction and a second row of effusion cooling holes disposed at a tangential angle of between about 0° and
about 20°
relative to the axial direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A gas turbine engine combustor is provided. An inner liner has an upstream end and a downstream end and extends in an axial direction between the upstream and downstream ends. A dual wall outer liner has a hot wall, a cold wall at least partially surrounding the hot wall, an upstream end, and a downstream end. The outer liner extends in the axial direction between the upstream and downstream ends. A dome assembly is coupled between the upstream ends of the inner and outer liners to define a combustion chamber between the inner liner and the hot wall of the outer liner. Effusion cooling holes are disposed in the hot wall, including a first row disposed at a tangential angle of between about 70° and about 90° and a second row disposed at a tangential angle of between about 0° and about 20°.
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Citations
20 Claims
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1. A gas turbine engine combustor, comprising:
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an inner liner having an upstream end and a downstream end, the inner liner extending in an axial direction between the upstream and downstream ends; a dual wall outer liner having a hot wall, a cold wall at least partially surrounding the hot wall, an upstream end, and a downstream end, the outer liner extending in the axial direction between the upstream and downstream ends, the outer liner being spaced apart from, and at least partially surrounding, the inner liner; a dome assembly coupled between the upstream ends of the inner and outer liners to define a combustion chamber between the inner liner and the hot wall of the outer liner; and a plurality of rows of effusion cooling holes disposed in the hot wall, including a first row of effusion cooling holes disposed at a tangential angle of between about 70° and
about 90°
relative to the axial direction and a second row of effusion cooling holes disposed at a tangential angle of between about 0° and
about 20°
relative to the axial direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A combustor liner segment, comprising:
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a hot side; a cold side opposing the hot side and having an upstream end and a downstream end, the cold side extending in an axial direction between the upstream and downstream ends; and a plurality of effusion cooling holes extending from the cold side to the hot side, including a first row of effusion cooling holes disposed at a tangential angle of between about 70° and
about 90°
relative to the axial direction and a second row of effusion cooling holes disposed at a tangential angle of between about 0° and
about 20°
relative to the axial direction. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A combustor liner segment, comprising:
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a hot side; a cold side opposing the hot side and having an upstream end and a downstream end, the cold side extending in an axial direction between the upstream and downstream ends, the cold wall having at least one raised edge extending in an axial direction between the upstream and downstream ends; and a plurality of effusion cooling holes extending from the cold side to the hot side, including a first row of effusion cooling holes extending in a circumferential direction and disposed at a tangential angle of between about 70° and
about 90°
relative to the axial direction,a second row of effusion cooling holes extending in a circumferential direction, downstream of the first row, and disposed at a tangential angle of between about 0° and
about 20°
relative to the axial direction,a third row of effusion cooling holes extending in a circumferential direction, downstream of the second row, and disposed at a tangential angle of between about 70° and
about 90°
relative to the axial direction,a fourth row of effusion cooling holes extending in a circumferential direction, downstream of the third row, and disposed at a tangential angle of between about 0° and
about 20°
relative to the axial direction, anda fifth row of effusion cooling holes adjacent to the at least one raised edge and extending in an axial direction; and at least one row of dilution openings extending through the hot side, the at least one row of dilution openings being generally aligned in a circumferential direction with the second row of the effusion cooling holes.
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Specification