초록

The first stage turbine vanes in a gas turbine are supported both axially and for torque control in a ring located within the diffuser case such that it is free to expand to minimize thermal stresses. The support ring is modified to permit assembly of all the turbines within the ring.

대표청구항 ▼

A vane assembly for a turbine including: a surrounding case having a mounting flange on its outer surface and a spacer flange on its inner surface spaced forwardly, axially from, the mounting flange, a sleeve positioned within said case and supported radially and axially by said spacer flange adjace

A vane assembly for a turbine including: a surrounding case having a mounting flange on its outer surface and a spacer flange on its inner surface spaced forwardly, axially from, the mounting flange, a sleeve positioned within said case and supported radially and axially by said spacer flange adjacent its forward end, spaced flanges on the inner surface of the sleeve, one of said flanges having radial slots in its inner periphery, a turbine case secured to the mounting flange and engaging the rearward end of the sleeve to hold it in axial position only, and a row of turbine vanes positioned within the sleeve, each vane having an outer shroud and a lug extending outwardly from said shroud, said lug being positioned between said spaced flanges in the sleeve, some of said lugs having axially extending torque pins thereon to engage in said slots, said flanges on the sleeve are upstream from one another and in which the upstream flange has the slots therein and the flange downstream thereof has cooling air passages closely spaced from the sleeve, and in which some of the slots are elongated to permit circumferential movement of the vanes for assembly, and said flange downstream of the lugs has a lateral flange at its inner end and an inner modular seal supported by said lateral flange.