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Title: Film riding seals for rotary machines

A seal assembly for a rotary machine is provided. The seal assembly includes multiple sealing device segments disposed circumferentially intermediate to a stationary housing and a rotor. Each of the segments includes a shoe plate with a forward-shoe section and an aft-shoe section having one or more labyrinth teeth therebetween facing the rotor. The sealing device includes a stator interface element having a groove or slot for allowing disposal of a spline seal for preventing segment leakages. The sealing device segment also includes multiple bellow springs or flexures connected to the shoe plate and to the stator interface element. Further, the sealing device segments include a secondary seal integrated with the stator interface element at one end and positioned about the multiple bellow springs or flexures and the shoe plate at the other end.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1346051
Assignee:
General Electric Company NETL
Patent Number(s):
9,587,746
Application Number:
13/562,705
Contract Number:
FC26-05NT42643
Resource Relation:
Patent File Date: 2012 Jul 31
Research Org:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Works referenced in this record:

Hydrodynamic foil face seal
patent, August 2007

Shroud assembly with discourager
patent, November 2012

Performance of a Complaint Foil Seal in a Small Gas Turbine Engine Simulator Employing a Hybrid Foil/Ball Bearing Support System
journal, January 2001