JOSEPH F KMEC
Engineers in Delaware
License number
Pennsylvania PE017840E
Category
Engineers
Type
Professional Engineer
Address
Address
2
Delaware
Chester, PA 19014
Chester, PA 19014
Professional information
Variable Radius Springback Wavy Seal
US Patent:
4103905, Aug 1, 1978
Filed:
Feb 7, 1977
Appl. No.:
5/766475
Inventors:
John W. Desmond - Media PA
Joseph F. Kmec - Aston PA
Charles A. Meyer - Media PA
Joseph F. Kmec - Aston PA
Charles A. Meyer - Media PA
Assignee:
Westinghouse Electric Corp. - Pittsburgh PA
International Classification:
F16J 1548, F01D 520
US Classification:
277 56
Abstract:
A variable radius labyrinth seal arrangement for use in a steam turbine apparatus is characterized by a flexible strip member having mounted substantially perpendicular 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 waviness, of the uprights varies in accordance 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.