Ingestion resistant seal assembly

Details Ingestion resistant seal assembly Ingestion resistant seal assembly

2009-04-29

2011-12-13

Wojciechowicz, Edward (Department: 2895)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between axial flow runner and vane or vane diaphragm structure

C415S173100, C415S173500, C415S180000, C415S230000

Reexamination Certificate

active

08075256

ABSTRACT:
A seal assembly limits gas leakage from a hot gas path to one or more disc cavities in a gas turbine engine. The seal assembly includes a seal apparatus associated with a blade structure including a row of airfoils. The seal apparatus includes an annular inner shroud associated with adjacent stationary components, a wing member, and a first wing flange. The wing member extends axially from the blade structure toward the annular inner shroud. The first wing flange extends radially outwardly from the wing member toward the annular inner shroud. A plurality of regions including one or more recirculation zones are defined between the blade structure and the annular inner shroud that recirculate working gas therein back toward the hot gas path.

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