US 12,292,003 B2
Inleakage management apparatus
Craig Alan Gonyou, Blanchester, OH (US); Nathan Joel Mullenix, West Chester, OH (US); and Fei Huang, Carmel, IN (US)
Assigned to General Electric Company, Evandale, OH (US)
Filed by GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed on Jan. 10, 2022, as Appl. No. 17/571,609.
Application 17/571,609 is a continuation of application No. 15/622,262, filed on Jun. 14, 2017, granted, now 11,242,804.
Prior Publication US 2022/0128007 A1, Apr. 28, 2022
Int. Cl. F02C 7/28 (2006.01); F02C 3/04 (2006.01); F02C 7/16 (2006.01); F02C 7/264 (2006.01); F23R 3/00 (2006.01)
CPC F02C 7/28 (2013.01) [F02C 3/04 (2013.01); F02C 7/16 (2013.01); F02C 7/264 (2013.01); F23R 3/00 (2013.01); F23R 3/002 (2013.01); F05D 2220/32 (2013.01); F05D 2240/35 (2013.01); F05D 2240/55 (2013.01); F05D 2250/611 (2013.01); F23R 2900/00012 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A turbine engine comprising:
a liner at least partially defining a fluid path and separating the fluid path from a region on an opposing side of the liner, the liner including an orifice extending between the fluid path and the region;
an instrument extending through at least a portion of the orifice, the instrument being one of either an igniter or a borescope plug; and
a seal assembly coupled to the liner, the seal assembly being positioned within the orifice and at least partially surrounding the instrument, the seal assembly having a labyrinth ferrule, the labyrinth ferrule having an annular ferrule body having a central bore extending therethrough, the central bore defining a bore centerline, the annular ferrule body comprising:
an annular assembly cone formed at a first end of the annular ferrule body, the annular assembly cone comprising an annular convergent lip;
an inner surface provided on an axially opposite side of the annular ferrule body from the annular convergent lip, with respect to the bore centerline;
at least one labyrinth annular restriction located axially between the annular assembly cone and the inner surface with respect to the bore centerline, the at least one labyrinth annular restriction extending radially toward the central bore and terminating radially prior, with respect to the bore centerline, to any portion of the instrument in the central bore to define a leakage gap therebetween;
a first ferrule intermediate cavity defining an interior cavity of the annular ferrule body encased by the annular ferrule body, the first ferrule intermediate cavity being spaced from the at least one labyrinth annular restriction; and
at least one cooling hole extending through the annular ferrule body and being fluidly coupled to the first intermediate ferrule cavity;
wherein the at least one labyrinth annular restriction is configured to reduce a velocity of a leakage fluid within the leakage gap, while allowing at least a portion of the leakage fluid to flow past the at least one labyrinth annular restriction and through the leakage gap.