Film riding seal assembly for turbomachinery
Abstract
An aerodynamic seal assembly for a rotary machine includes multiple sealing segments disposed circumferentially intermediate to a stationary housing and a rotor. Each of the segments includes a shoe plate with a forward load-bearing section and an aft load-bearing section configured to generate an aerodynamic force between the shoe plate and the rotor. The shoe plate includes at least one labyrinth teeth facing the rotor and positioned between the forward load-bearing section and the aft load-bearing section. The sealing segment also includes at least one spring connected to a pedestal located about midway of an axial length of the shoe plate and to a stator interface element. Further, the sealing segment includes a rigid segmented secondary seal attached to the stator interface element at one first end and in contact with the pedestal of the shoe plate at one second end.
- Inventors:
- Issue Date:
- Research Org.:
- GE Global Research, Niskayuna, New York (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1255969
- Patent Number(s):
- 9359908
- Application Number:
- 14/325,452
- Assignee:
- General Electric Company (Niskayuna, NY)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16J - PISTONS {
- DOE Contract Number:
- FC26-05NT42643
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2014 Jul 08
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 33 ADVANCED PROPULSION SYSTEMS
Citation Formats
Bidkar, Rahul Anil, Giametta, Andrew Paul, Gibson, Nathan Evan McCurdy, and Cleveland, Nicolas Joseph. Film riding seal assembly for turbomachinery. United States: N. p., 2016.
Web.
Bidkar, Rahul Anil, Giametta, Andrew Paul, Gibson, Nathan Evan McCurdy, & Cleveland, Nicolas Joseph. Film riding seal assembly for turbomachinery. United States.
Bidkar, Rahul Anil, Giametta, Andrew Paul, Gibson, Nathan Evan McCurdy, and Cleveland, Nicolas Joseph. Tue .
"Film riding seal assembly for turbomachinery". United States. https://www.osti.gov/servlets/purl/1255969.
@article{osti_1255969,
title = {Film riding seal assembly for turbomachinery},
author = {Bidkar, Rahul Anil and Giametta, Andrew Paul and Gibson, Nathan Evan McCurdy and Cleveland, Nicolas Joseph},
abstractNote = {An aerodynamic seal assembly for a rotary machine includes multiple sealing segments disposed circumferentially intermediate to a stationary housing and a rotor. Each of the segments includes a shoe plate with a forward load-bearing section and an aft load-bearing section configured to generate an aerodynamic force between the shoe plate and the rotor. The shoe plate includes at least one labyrinth teeth facing the rotor and positioned between the forward load-bearing section and the aft load-bearing section. The sealing segment also includes at least one spring connected to a pedestal located about midway of an axial length of the shoe plate and to a stator interface element. Further, the sealing segment includes a rigid segmented secondary seal attached to the stator interface element at one first end and in contact with the pedestal of the shoe plate at one second end.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {6}
}
Works referenced in this record:
Advanced Aerodynamic Sealing System for Thermo Turbo Machinery
conference, December 2008
- Uth, Karl E.; Dong, Edward G.
- International Joint Power Generation Conference collocated with TurboExpo 2003, 2003 International Joint Power Generation Conference
Aerodynamic Performance of Double-Sided Labyrinth Seals
book, January 2009
- Kim, Tong Seop; Kang, Yungmo; Moon, Hee Koo
- Fluid Machinery and Fluid Mechanics
Gas turbine engine active clearance control
patent, April 1985
- Deveau, Paul; Greenberg, Paul B.; Paolillo, Roger E.
- US Patent Document 4,513,567
Actuating mechanism for a turbine and method of retrofitting
patent, January 2005
- Dinc, Osman Saim; Demiroglu, Mehmet; Sarshar, Hamid Reza
- US Patent Document 6,840,519
Turbomachinery
patent, March 2013
- Yamaguchi, Kazuyuki; Magara, Yohei; Yoshida, Toyomi
- US Patent Document 8,388,311