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1. (WO2018038899) CENTRIFUGALLY ACTIVATABLE SEAL FOR A ROTARY MACHINE AND METHOD OF ASSEMBLING SAME

Pub. No.:    WO/2018/038899    International Application No.:    PCT/US2017/045659
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Tue Aug 08 01:59:59 CEST 2017
IPC: F01D 11/00
F01D 11/02
F16J 15/16
F16J 15/3288
F16J 15/3292
Applicants: GENERAL ELECTRIC COMAPNY
Inventors: SARAWATE, Neelesh, Nandkumar
TRIVEDI, Deepak
ZHENG, Xiaoqing
Title: CENTRIFUGALLY ACTIVATABLE SEAL FOR A ROTARY MACHINE AND METHOD OF ASSEMBLING SAME
Abstract:
A seal (100) for a rotary machine (10) includes a flexible element (124) extending circumferentially about a rotating component (102) and extending generally radially from a first end (128) to a free second end (130). The flexible element (124) is coupled proximate the first end (128) for rotation with the rotating component (102). The seal (100) also includes a retaining plate (122) having a stop face (140) that orients the flexible element (124) at a first angle (136) when the rotating component (102) is operating at less than a critical speed and under the including of pressure loading, such that a clearance gap (138) is defined between the free second end (130) and a stationary component (104). The flexible element (124) extends at substantially a second angle (144) when the rotating component (102) is operating at a speed greater than the critical speed, such that the flexible element (124) forms a dynamic seal between the rotating component (102) and the stationary component (104).