Brush seal for turbo-engines

Details Brush seal for turbo-engines Brush seal for turbo-engines

1996-08-06

1997-11-18

Kwon, John T.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

415229, 277 53, F04D 2908

Patent

active

056881053

ABSTRACT:
A brush seal assembly is provided for sealing off spaces on a circumferential gap which are acted upon by pressure in a different manner, particularly between an engine casing and an engine shaft. On the engine casing, a holding device for a bristle bundle is provided from which the bristle bundle is guided between circumferential webs sealingly against the engine rotor and, with respect to the one web facing the high pressure side, forms an axial gap in the circumferential direction. In the axial gap, a covering ring for the bristle bundle is arranged in an axially and radially movable manner which is operated by the differential pressure and can be displaced with respect to the bristle bundle. With respect to the ends of the webs surrounding the engine shaft at a distance, the covering ring is to project out of the axial gap and surround the engine shaft by means of a radial sealing gap.

REFERENCES:
patent: 5031922 (1991-07-01), Heydrich
patent: 5066024 (1991-11-01), Reisinger et al.
patent: 5174582 (1992-12-01), Ferguson
patent: 5318309 (1994-06-01), Tseng et al.
patent: 5351971 (1994-10-01), Short
patent: 5400952 (1995-03-01), Hetico et al.
patent: 5480165 (1996-01-01), Flower

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