Coated hot gas duct liner
First Claim
Patent Images
1. A cooled liner comprising a first planar sheet pressed against a second planar sheet to which cooling air is applied, characterized in that:
- the first sheet contains an airflow outlet;
the second sheet comprises a raised portion elevated away from the first sheet from a first location to a second location on the second sheet to define an air chamber between the first sheet and the second sheet, and an airflow metering passage that is located at a third location in said raised portion at a first distance from said first location, said airflow outlet having a line projection on the second sheet that extends from a fourth location to a fifth location, the fourth location being between said third location and said second location and at a second distance from said first location that is greater than said first distance, said fifth location being at a greater distance from said first location than said second location; and
a coating on the first sheet and a like coating originating at said said fourth location to said fifth location on the second sheet.
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Abstract
In a gas turbine liner, air metering passages are placed in dimples in a first liner sheet to provide an air chamber. A second liner sheet contains an air outlet for each dimple. The second sheet masks the metering passage and a portion of the dimple. A coating is applied to the second sheet and extends into the dimple but does not cover the metering passage.
92 Citations
3 Claims
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1. A cooled liner comprising a first planar sheet pressed against a second planar sheet to which cooling air is applied, characterized in that:
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the first sheet contains an airflow outlet; the second sheet comprises a raised portion elevated away from the first sheet from a first location to a second location on the second sheet to define an air chamber between the first sheet and the second sheet, and an airflow metering passage that is located at a third location in said raised portion at a first distance from said first location, said airflow outlet having a line projection on the second sheet that extends from a fourth location to a fifth location, the fourth location being between said third location and said second location and at a second distance from said first location that is greater than said first distance, said fifth location being at a greater distance from said first location than said second location; and a coating on the first sheet and a like coating originating at said said fourth location to said fifth location on the second sheet. - View Dependent Claims (2, 3)
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Specification