Aerodynamic seals for rotary machine

Title: Aerodynamic seals for rotary machine

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.

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

Issue Date:: 2016-02-09

OSTI Identifier:: 1237859

Assignee:: General Electric Company NETL

Patent Number(s):: 9,255,642

Application Number:: 13/542,780

Contract Number:: FC26-05NT42643

Resource Relation:: Patent File Date: 2012 Jul 06

Research Org:: General Electric Company, Niskayuna, NY (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 24 POWER TRANSMISSION AND DISTRIBUTION

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