Method and apparatus for improving the airsealing effectiveness

Details Method and apparatus for improving the airsealing effectiveness Method and apparatus for improving the airsealing effectiveness

1996-03-26

1997-05-20

Kwon, John T.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

4151701, 415230, F16J 15447

Patent

active

056305907

ABSTRACT:
A method for improving effectiveness of a labyrinth seal 40 between coannular components 22, 30 in a turbine 10 includes reconfiguring one of e components to provide means for receiving and retaining a replaceable brush seal 60 installing the brush seal so that the seal bristles impede the leakage of air through an intercomponent gap 41. In the preferred embodiment the reconfiguring step is applied to a hollow, cylindrical barrel 30 and includes machining the barrel to reduce its axial length and its wall thickness and also includes attaching a retainer 52. The retainer cooperates with the barrel to define a groove 56 within which the brush seal is trapped radially and axially. The brush seal slides circumferentially within the groove to facilitate seal installation and removal. The invention despenses with the need to carry out an expensive and time consuming replacement or renovation of the worn labyrinth seal.

REFERENCES:
patent: 4209268 (1980-06-01), Fujiwana et al.
patent: 5074748 (1991-12-01), Hagle
patent: 5114159 (1992-05-01), Baird et al.
patent: 5181728 (1993-01-01), Stec
patent: 5201530 (1993-04-01), Kelch et al.
patent: 5480165 (1996-01-01), Flower
patent: 5501573 (1996-03-01), Sanders
patent: 5522698 (1996-06-01), Butler et al.

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