Brush seal having bristles tilted in the circumferential directi

Details Brush seal having bristles tilted in the circumferential directi Brush seal having bristles tilted in the circumferential directi

1998-03-19

1999-08-31

Knight, Anthony

Seal for a joint or juncture

Seal between relatively movable parts

Brush seal

F16J 15447

Patent

active

059443200

ABSTRACT:
A brush seal (1, 101) seals a circumferential gap (S.sub.1) between two relatively rotatable machine components (2, 102; 3, 103), such as the rotor or a shaft and a stator of a fluid flow machine, such as a gas turbine engine. A plurality of seal bristles (4, 104) are fixed in a bristle holder (5) in an annular shape, and are mounted on the stator (3, 103) so that the free bristle ends (7, 107) extend toward and provide a seal against a seal surface (9, 109) of the rotor (2, 102). Each bristle includes a middle body portion (4A) that is tilted at a first tilt angle (.alpha..sub.1) in the circumferential direction following the rotation direction, and the free bristle end (7, 107) is bent or angled relative to the tilted body portion (4A) so as to extend at a second tilt angle (.alpha..sub.2) which is smaller than the first tilt angle (.alpha..sub.1). Preferably, the first tilt angle (.alpha..sub.1) is in the range from 30.degree. to 60.degree., while the second tilt angle (.alpha..sub.2) is in the range from 0.degree. to 15.degree.. The bristles may further be tilted in an axial direction at an angle (.beta.) relative to a radially extending plane. Since the free bristle ends (7, 107) extend substantially perpendicularly to the seal surface (9, 109), the seal effectiveness and the elastic resiliency of the brush seal are maintained, and the bristles are not damaged, independent of the rotation direction of the rotor.

REFERENCES:
patent: 4358120 (1982-11-01), Moore
patent: 4971336 (1990-11-01), Ferguson
patent: 5029875 (1991-07-01), Spain et al.
patent: 5066025 (1991-11-01), Hanrahan
patent: 5181728 (1993-01-01), Stec
patent: 5183197 (1993-02-01), Howe
patent: 5316318 (1994-05-01), Veau
patent: 5474306 (1995-12-01), Bagepalli et al.
patent: 5480165 (1996-01-01), Flower
patent: 5522698 (1996-06-01), Butler et al.

Affiliated with

Also associated with

Rating

Brush seal having bristles tilted in the circumferential directi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Brush seal having bristles tilted in the circumferential directi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brush seal having bristles tilted in the circumferential directi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2424141