Gas-turbine combustion chamber wall
First Claim
1. A gas-turbine combustion chamber wall for a gas-turbine comprising:
- a combustion chamber wall;
a plurality of tiles arranged on an inner side of the combustion chamber wall, with an interspace being formed between the tiles and the combustion chamber wall;
impingement-cooling holes provided in the combustion chamber wall for introducing cooling air into the interspace;
effusion-cooling holes provided in the tiles through which cooling air from the interspace flows into a combustion chamber;
wherein the tiles include a surface structure on a side facing the combustion chamber wall;
wherein an area provided with the impingement-cooling holes, an area provided with the surface structure and an area provided with effusion-cooling holes are offset relative to each other in an axial direction of the combustion chamber such that there are four regions progressing in consecutive numeric order in the axial direction in a direction of combustion gas flow from first to fourth, each region having an axial extent and an inward/outward extent that encompasses both the combustion chamber wall and the inwardly arranged tiles along the axial extent, the four regions being a first region of only impingement cooling holes, a second region of overlap of impingement cooling holes and the surface structure, a third region of overlap of effusion cooling holes and the surface structure and a fourth region of only effusion cooling holes.
1 Assignment
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Accused Products
Abstract
A gas-turbine combustion chamber wall for a gas-turbine has a combustion chamber wall 9, on the inner side of which several tiles 10 are arranged, with an interspace 14 being formed between the tiles 10 and the combustion chamber wall 9, into which cooling air is introduced via impingement-cooling holes 8 provided in the combustion chamber wall 9 and from which the cooling air flows into the combustion chamber via effusion-cooling holes 11, 23 provided in the tile 10. The tile 10 includes a surface structure 19, 22 on the side facing the combustion chamber wall 9. The area of the impingement-cooling holes 8 and the area of the effusion-cooling holes 11 do not coincide.
34 Citations
17 Claims
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1. A gas-turbine combustion chamber wall for a gas-turbine comprising:
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a combustion chamber wall; a plurality of tiles arranged on an inner side of the combustion chamber wall, with an interspace being formed between the tiles and the combustion chamber wall; impingement-cooling holes provided in the combustion chamber wall for introducing cooling air into the interspace; effusion-cooling holes provided in the tiles through which cooling air from the interspace flows into a combustion chamber; wherein the tiles include a surface structure on a side facing the combustion chamber wall; wherein an area provided with the impingement-cooling holes, an area provided with the surface structure and an area provided with effusion-cooling holes are offset relative to each other in an axial direction of the combustion chamber such that there are four regions progressing in consecutive numeric order in the axial direction in a direction of combustion gas flow from first to fourth, each region having an axial extent and an inward/outward extent that encompasses both the combustion chamber wall and the inwardly arranged tiles along the axial extent, the four regions being a first region of only impingement cooling holes, a second region of overlap of impingement cooling holes and the surface structure, a third region of overlap of effusion cooling holes and the surface structure and a fourth region of only effusion cooling holes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification