Combustor systems with liners having improved cooling hole patterns
First Claim
1. A combustor liner assembly comprising:
- a liner having an inner surface configured to be exposed to a combustion gas;
a first group of cooling holes formed in the liner and having an increasing density in a downstream direction,wherein the first group of cooling holes include a generally circumferential first row of cooling holes,a generally circumferential second row of cooling holes immediately downstream from, consecutive to, and separated from the first row at a first distance,a generally circumferential third row of cooling holes immediately downstream from, consecutive to, and separated from the second row at a second distance, anda generally circumferential fourth row of cooling holes immediately downstream from, consecutive to, and separated from the third row at a third distance,wherein the first distance is greater than the second distance and the third distance, and the second distance is greater than the third distance.
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Accused Products
Abstract
A combustor liner assembly includes a liner and a first group of cooling holes formed in the liner and having an increasing density in a downstream direction. The first group of cooling holes include a generally circumferential first row of cooling holes, a generally circumferential second row of cooling holes immediately downstream from, consecutive to, and separated from the first row at a first distance, a generally circumferential third row of cooling holes immediately downstream from, consecutive to, and separated from the second row at a second distance, and a generally circumferential fourth row of cooling holes immediately downstream from, consecutive to, and separated from the third row at a third distance. The first distance is greater than the second distance and the third distance, and the second distance is greater than the third distance.
25 Citations
18 Claims
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1. A combustor liner assembly comprising:
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a liner having an inner surface configured to be exposed to a combustion gas; a first group of cooling holes formed in the liner and having an increasing density in a downstream direction, wherein the first group of cooling holes include a generally circumferential first row of cooling holes, a generally circumferential second row of cooling holes immediately downstream from, consecutive to, and separated from the first row at a first distance, a generally circumferential third row of cooling holes immediately downstream from, consecutive to, and separated from the second row at a second distance, and a generally circumferential fourth row of cooling holes immediately downstream from, consecutive to, and separated from the third row at a third distance, wherein the first distance is greater than the second distance and the third distance, and the second distance is greater than the third distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A combustor system, comprising:
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an inner liner; and an outer liner circumscribing the inner liner and forming a combustion chamber therebetween for the combustion of a fuel and air mixture, the outer liner comprising a first group of cooling holes having an increasing density in a downstream direction, wherein the first group of cooling holes include a generally circumferential first row of cooling holes, a generally circumferential second row of cooling holes immediately downstream from, consecutive to, and separated from the first row at a first distance, a generally circumferential third row of cooling holes immediately downstream from, consecutive to, and separated from the second row at a second distance, and a generally circumferential fourth row of cooling holes immediately downstream from, consecutive to, and separated from the third row at a third distance, wherein the first distance is greater than the second distance and the third distance, and the second distance is greater than the third distance. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A combustor liner assembly comprising:
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an inner liner comprising a first group of cooling holes having an increasing density in a downstream direction, wherein the first group of cooling holes include a generally circumferential first row of cooling holes, a generally circumferential second row of cooling holes immediately downstream from, consecutive to, and separated from the first row at a first distance, a generally circumferential third row of cooling holes immediately downstream from, consecutive to, and separated from the second row at a second distance, and a generally circumferential fourth row of cooling holes immediately downstream from, consecutive to, and separated from the third row at a third distance, wherein the first distance is greater than the second distance and the third distance, and the second distance is greater than the third distance, a second group of cooling holes downstream of the first group and having a constant density, and a third group of cooling holes downstream of the second group and having a varying density; and an outer liner circumscribing the inner liner to form a combustion chamber therebetween, the outer liner comprising a fourth group of cooling holes having an increasing density in the downstream direction, a fifth group of cooling holes downstream of the fourth group and having a constant density, and a sixth group of cooling holes downstream of the fifth group and having a varying density.
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Specification