Rim seal arrangement having pumping feature

Title: Rim seal arrangement having pumping feature

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:: Lee, Ching-Pang; Myers, Caleb

Issue Date:: 2017-04-25

OSTI Identifier:: 1353070

Assignee:: Siemens Energy, Inc. NETL

Patent Number(s):: 9,631,509

Application Number:: 14/946,893

Contract Number:: FC26-05NT42644

Resource Relation:: Patent File Date: 2015 Nov 20

Research Org:: Siemens Energy, Inc. Orlando, FL (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

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Other works cited in this record:

Air cooled turbine for a gas turbine engine
patent, September 1982

Campbell, David; Morley, Frederick
US Patent Document 4,348,157
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4348157

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Outer rim seal assembly in a turbine engine
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US Patent Document 8,939,711
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Aft outer rim seal arrangement
patent, April 2015

Lee, Ching-Pang; Tham, Kok-Mun; Schroeder, Eric
US Patent Document 9,017,014
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F9017014

Seal assembly including grooves in a radially outwardly facing side of a platform in a gas turbine engine
patent, May 2015

Lee, Ching-Pang
US Patent Document 9,039,357
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F9039357

Seal assembly including grooves in an inner shroud in a gas turbine engine
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Lee, Ching-Pang
US Patent Document 9,068,513
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F9068513

Seal assembly including grooves in an aft facing side of a platform in a gas turbine engine
patent, November 2015

Lee, Ching-Pang; Tham, Kok-Mun; Schroeder, Eric
US Patent Document 9,181,816
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F9181816

Outer rim seal assembly in a turbine engine
patent, February 2016

Lee, Ching-Pang; Tham, Kok-Mun; Shivanand, Manjit
US Patent Document 9,260,979
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F9260979

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