Patent ID: 6077038
Filing Date: 2000-06-20
Classification: F01D,F05D,F16J

Abstract:
Brush seal assembly for a turbo engine of the type having an engine rotor and an engine stator, comprising a bristle bundle, a bundle holder holding the bundle in sliding sealing contact with one of the engine rotor and engine stator intermediate an upstream high pressure space and a downstream low pressure space, said bundle holder including circumferentially extending upstream and downstream webs between which the bristle bundle is held, the upstream and downstream webs being substantially the same length and said upstream web essentially covering the bristle bundle, said upstream web together with a facing part of said one of the engine rotor and engine stator defining an axial ring gap for flow of fluid there through, and a turbulence reducing structure disposed upstream of the bristle bundle bristles for reducing rotor induced turbulence during operation of the turbo engine and guiding fluid flow through the axial ring gap, said turbulence reducing structure including an annular member disposed in the high pressure space upstream of the upstream web of the bundle holder and configured for guiding fluid flow radially toward and axially through the axial ring gap with air passing axially through the turbulence reducing structure being deflected radially toward the axial ring gap of the upstream side of the upstream web of the bundle holder.