Variable radius springback wavy seal

Details Variable radius springback wavy seal Variable radius springback wavy seal

F - Mech Eng,Light,Heat,Weapons

16

J

277/15

F16J 15/44 (2006.01) F01D 11/12 (2006.01) F16J 15/447 (2006.01)

Patent

CA 1063139

VARIABLE RADIUS SPRINGBACK WAVY SEAL ABSTRACT OF THE DISCLOSURE A variable radius labyrinth seal arrangement for use in a steam turbine apparatus is characterized by a flexible strip member having mounted substantially perpen- dicular thereto a series of corrugated uprights. The strip is received within a circumferential groove provided in the turbine casing and is flexible to conform to the curvature of the groove, thus permitting seal use in a variety of turbine sizes. The amplitude of the corrugations, or wavi- ness, of the uprights varies in acccrdance to the magnitude of the flexure of the strip necessary for the strip to conform to the groove curvature. The strip is movably biased within the groove and responds to forces generated by contacts between the uprights and rotating turbine elements by displacing radially outward from that contact.

270865

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