Arrangement of holes for forming a cooling film
AssigneeAsea Brown Boveri AG
InventorBernhard Weigand
Life of this patent
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Abstract
Arrangement of holes for forming a cooling film on a wall (50) which is subjected to a flow of hot gas. Two rows (1, 2) of holes (10, 20) are provided which are arranged adjacent to one another, the diameter (d1) of the upstream holes (10) being smaller than the diameter (d2) of the upstream holes (20). The number of upstream holes (10) is equal to or smaller than the number of downstream holes (20). The use of such an arrangement of holes achieves the formation of an extremely effective cooling film with a simultaneously small consumption of cooling air.
Claims10
An arrangement of holes for forming a cooling film on a component wall subjected to a flow of hot gas, the component being selected from the group consisting of a turbine vane, a turbine blade, and a combustion chamber of a gas turbine, the arrangement comprising:
- a first row of holes and a second row of holes located adjacent to and downstream of the first row of holes, the diameter of the holes in the first row being smaller than the diameter of the holes in the second row, wherein the number of holes of the first row is substantially equal to or smaller than the number of holes of the second row.
Dependencies are inferred from the claim text.