Aerodynamic seals for rotary machine

Bidkar, Rahul Anil; Cirri, Massimiliano; Thatte, Azam Mihir; Williams, John Robert

Title: Aerodynamic seals for rotary machine

Patent · Tue Feb 09 00:00:00 EST 2016

OSTI ID:1237859

Bidkar, Rahul Anil; Cirri, Massimiliano; Thatte, Azam Mihir; Williams, John Robert

An aerodynamic seal assembly for a rotary machine 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 multiple labyrinth teeth therebetween facing the rotor. The sealing device segment also includes multiple flexures connected to the shoe plate and to a top interface element, wherein the multiple flexures are configured to allow the high pressure fluid to occupy a forward cavity and the low pressure fluid to occupy an aft cavity. Further, the sealing device segments include a secondary seal attached to the top interface element at one first end and positioned about the flexures and the shoe plate at one second end.

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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):: 9,255,642

Application Number:: 13/542,780

OSTI ID:: 1237859

Resource Relation:: Patent File Date: 2012 Jul 06

Country of Publication:: United States

Language:: English

References (27)

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Aerodynamic Seals for Rotary Machine Bidkar, Rahul Anil; Cirri, Massimiliano; Thatte, Azam Mihir https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20140008871 US Patent Application 13/542780; 20140008871	patent-application	January 2014
Film Riding Seals for Rotary Machines Bidkar, Rahul Anil; Sarawate, Neelesh Nandkumar; Wolfe, Christopher Edward https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20140062024 US Patent Application 13/562705; 20140062024	patent-application	March 2014
Pressure Actuated Film Riding Seals for Turbo Machinery Bidkar, Rahul Anil; Thatte, Azam Mihir; Gibson, Nathan Evan McCurdy https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20140117624 US Patent Application 14/045083; 20140117624	patent-application	May 2014
Film Riding Aerodynamic Seals for Rotary Engines Bidkar, Rahul Anil; Langenderfer, Matthew Michael; Deo, Hrishikesh Vishvas https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20140119912 US Patent Application 13/665431; 20140119912	patent-application	May 2014

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