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Title: Film riding seals for rotary machines

Patent ·
OSTI ID:1346051
; ; ; ;

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.

Research Organization:
GE Global Research, Niskayuna, New York (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42643
Assignee:
General Electric Company
Patent Number(s):
9,587,746
Application Number:
13/562,705
OSTI ID:
1346051
Resource Relation:
Patent File Date: 2012 Jul 31
Country of Publication:
United States
Language:
English

References (28)

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Hydrodynamic Foil Bearings patent May 1974
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Turbine rotor-stator leaf seal and related method patent March 2003
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Steam turbine packing casing horizontal joint seals and methods of forming the seals patent November 2003
Seal carrier for a rotary machine and method of retrofitting patent December 2003
Noncontacting finger seal patent November 2004
Seal assembly for a rotary machine patent February 2005
Hydrodynamic foil face seal patent August 2007
Sealing arrangement patent January 2008
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Non-contact seal for a gas turbine engine patent August 2011
Shroud assembly with discourager patent November 2012
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Aerodynamic seals for rotary machine patent February 2016
Performance of a Complaint Foil Seal in a Small Gas Turbine Engine Simulator Employing a Hybrid Foil/Ball Bearing Support System journal January 2001

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