Method for manufacturing turbine nozzle having non-linear cooling conduit

摘要

A method for manufacturing a turbine nozzle having a non-linear cooling conduit is disclosed. In one embodiment, a method includes: providing a turbine nozzle. The turbine nozzle includes: an airfoil, a cavity, having an inner surface, located within the airfoil, at least one endwall adjacent the airfoil, and a fillet region connecting the airfoil and the endwall. The fillet region also includes an outer surface. The method also includes: forming a non-linear cooling conduit within the fillet region and adjacent the outer surface of the fillet region of the turbine nozzle. The forming of the non-linear cooling conduit includes curved drilling through a portion of the outer surface of the fillet region of the turbine nozzle.

主权项

1. A method comprising:
providing a turbine nozzle including:
an airfoil having a leading edge and a trailing edge;at least one cavity located within the airfoil, the at least one cavity including an inner surface;at least one endwall adjacent the airfoil; anda fillet region connecting the airfoil and the at least one endwall, the fillet region including an outer surface; forming an aperture extending through the outer surface of the fillet region to the at least one cavity of the airfoil; forming a groove on a portion of the inner surface of the at least one cavity, such that the groove extends continuously along a majority of an axial length of the airfoil between the airfoil leading edge and the airfoil trailing edge; coupling a cover plate to the inner surface of the at least one cavity of the turbine nozzle to substantially cover a portion of the groove; and forming a non-linear cooling conduit from the aperture, the groove and the cover plate, the non-linear cooling conduit located between the cavity of the airfoil and the outer surface of the fillet region.