Rim seal arrangement having pumping feature
Abstract
A rim seal arrangement for a gas turbine engine includes a first seal face on a rotor component, and a second seal face on a stationary annular rim centered about a rotation axis of the rotor component. The second seal face is spaced from the first seal face along an axial direction to define a seal gap. The seal gap is located between a radially outer hot gas path and a radially inner rotor cavity. The first seal face has a plurality of circumferentially spaced depressions, each having a depth in an axial direction and extending along a radial extent of the first seal face. The depressions influence flow in the seal gap such that during rotation of the rotor component, fluid in the seal gap is pumped in a radially outward direction to prevent ingestion of a gas path fluid from the hot gas path into the rotor cavity.
- Inventors:
- Issue Date:
- Research Org.:
- Siemens Energy, Inc. Orlando, FL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1353070
- Patent Number(s):
- 9631509
- Application Number:
- 14/946,893
- Assignee:
- Siemens Energy, Inc.
- 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 F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- DOE Contract Number:
- FC26-05NT42644
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2015 Nov 20
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Lee, Ching-Pang, and Myers, Caleb. Rim seal arrangement having pumping feature. United States: N. p., 2017.
Web.
Lee, Ching-Pang, & Myers, Caleb. Rim seal arrangement having pumping feature. United States.
Lee, Ching-Pang, and Myers, Caleb. Tue .
"Rim seal arrangement having pumping feature". United States. https://www.osti.gov/servlets/purl/1353070.
@article{osti_1353070,
title = {Rim seal arrangement having pumping feature},
author = {Lee, Ching-Pang and Myers, Caleb},
abstractNote = {A rim seal arrangement for a gas turbine engine includes a first seal face on a rotor component, and a second seal face on a stationary annular rim centered about a rotation axis of the rotor component. The second seal face is spaced from the first seal face along an axial direction to define a seal gap. The seal gap is located between a radially outer hot gas path and a radially inner rotor cavity. The first seal face has a plurality of circumferentially spaced depressions, each having a depth in an axial direction and extending along a radial extent of the first seal face. The depressions influence flow in the seal gap such that during rotation of the rotor component, fluid in the seal gap is pumped in a radially outward direction to prevent ingestion of a gas path fluid from the hot gas path into the rotor cavity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 25 00:00:00 EDT 2017},
month = {Tue Apr 25 00:00:00 EDT 2017}
}
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