초록 ▼

The present invention provides a sealing apparatus for sealing leakage around a trunnion assembly of a gas turbine engine variable vane rotatably supported by an engine casing. The apparatus includes a trunnion of the variable vane rotatable about a trunnion axis, radially spaced apart inner and out

The present invention provides a sealing apparatus for sealing leakage around a trunnion assembly of a gas turbine engine variable vane rotatably supported by an engine casing. The apparatus includes a trunnion of the variable vane rotatable about a trunnion axis, radially spaced apart inner and outer casing bores circumscribed about the trunnion axis and disposed radially outward of the engine centerline through the casing, and the trunnion rotatably disposed within the inner and outer casing bores. The inner bore is wider than the outer bore forming an annular shoulder with a planar radially inwardly facing shoulder surface. An annular recess in the trunnion has a planar radially inwardly facing recess surface substantially co-planar with the shoulder surface. A sealing ring is radially slidably disposed about the trunnion below the outer recess surface and has a radially outwardly facing sealing surface substantially co-extensive in a direction perpendicular to the trunnion axis and sealable with both the outer recess surface and the shoulder surface.

대표청구항 ▼

[What is claimed is:] [1.]a trunnion of the variable vane rotatable about a trunnion axis;inner and outer casing bores circumscribed about said trunnion axis and disposed radially outward of the engine centerline through the casing;said trunnion rotatably disposed within said inner and outer casing

[What is claimed is:] [1.]a trunnion of the variable vane rotatable about a trunnion axis;inner and outer casing bores circumscribed about said trunnion axis and disposed radially outward of the engine centerline through the casing;said trunnion rotatably disposed within said inner and outer casing bores;said inner bore being wider than said outer bore forming an annular shoulder with a planar radially inwardly facing shoulder surface;an annular recess in said trunnion, said recess having a planar radially inwardly facing recess surface substantially co-planar with said shoulder surface;a sealing ring radially slidably disposed about said trunnion below said outer recess surface; andsaid sealing ring having a radially outwardly facing sealing surface substantially co-extensive in a direction perpendicular to said trunnion axis and sealable with both said outer recess surface and said shoulder surface.