Turbine nozzle

摘要

A nozzle arrangement for a gas turbine engine comprising a first housing member and a second housing member. The nozzle arrangement may further include a first nozzle and a second nozzle. Each of the first nozzle and second nozzle may extend between the first housing member and the second housing member so as to form a doublet. A plurality of cooling apertures may be arranged on at least one of the first nozzle, the second nozzle, the first housing member, or the second housing member so as to provide a different degree of first order cooling across the doublet.

主权项

1. A nozzle arrangement for a gas turbine engine, comprising:
a first housing member and a second housing member; a first nozzle and a second nozzle, each of the first nozzle and second nozzle extending between the first housing member and the second housing member so as to form a doublet, wherein each of the first nozzle and the second nozzle are airfoil shaped and include a concave surface and an oppositely arranged convex surface; wherein the convex surface of the first nozzle faces the concave surface of the second nozzle; wherein a plurality of cooling apertures are arranged on at least one of the first nozzle, the second nozzle, the first housing member, or the second housing member so as to provide a different degree of first order cooling across the doublet; wherein the plurality of cooling apertures includes a larger number of apertures on the convex surface of the first nozzle than the convex surface of the second nozzle; and wherein the convex surface of the second nozzle includes an upper triangular zone adjacent to the first housing member and a lower triangular zone adjacent to the second housing member, wherein the upper and lower triangular zones are devoid of the plurality of cooling apertures, and at least a portion of the convex surface of the second nozzle outside of the upper and lower triangular zones includes a plurality of cooling apertures.