Browse Prior Art Database

AIRBLOWN SEAL

IP.com Disclosure Number: IPCOM000250296D
Publication Date: 2017-Jun-23
Document File: 11 page(s) / 2M

Publishing Venue

The IP.com Prior Art Database

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 20% of the total text.

1

AIRBLOWN SEAL

BACKGROUND

[0001] Turbine engines are driven by a flow of air and combusted gases passing through

the engine onto a multitude of rotating turbine blades.

[0002] Labyrinth seals can be provided throughout the turbine engine between areas of

differing pressures. Seals can help to prevent wear and rubbing between proximate stationary

and rotating parts.

DRAWINGS

[0003] In the drawings:

[0004] FIG. 1 is a schematic cross-sectional diagram of a turbine engine for an aircraft with

a reverse flow combustor.

[0005] FIG. 2 is an enlarged cross-sectional view an air blown seal system for the engine

from FIG. 1 near an exhaust section of the turbine engine.

[0006] FIG. 3 is an enlarged cross-sectional view of the air blown seal system from FIG. 2.

[0007] FIG. 4 is an enlarged cross-sectional view of sealing teeth for the air blown seal

system from FIG. 2.

DESCRIPTION

[0008] Aspects of the disclosure described herein are directed to an air blown seal system

for a turbine engine. For purposes of illustration, the present disclosure will be described with

respect to a free turbine engine. It will be understood, however, that aspects of the disclosure

described herein are not so limited and that air blown seal system as described herein can be

implemented in other turbine engines, including but not limited to turbojet, turboprop,

turboshaft, and turbofan engines. Aspects of the disclosure discussed herein may have

general applicability within non-aircraft engines having an air blown seal system such as

other mobile applications and non-mobile industrial, commercial, and residential

applications.

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[0009] As used herein, the term “forward” or “upstream” refers to moving in a direction

toward the engine inlet, or a component being relatively closer to the engine inlet as

compared to another component. The term “aft” or “downstream” used in conjunction with

“forward” or “upstream” refers to a direction toward the rear or outlet of the engine or being

relatively closer to the engine outlet as compared to another component. Additionally, as

used herein, the terms “radial” or “radially” refer to a dimension extending between a center

longitudinal axis of the engine and an outer engine circumference. Furthermore, as used

herein, the term “set” or a “set” of elements can be any number of elements, including only

one.

[0010] All directional references (e.g., radial, axial, proximal, distal, upper, lower, upward,

downward, left, right, lateral, front, back, top, bottom, above, below, vertical, horizontal,

clockwise, counterclockwise, upstream, downstream, forward, aft, etc.) are only used for

identification purposes to aid the reader’s understanding of the present disclosure, and do not

create limitations, particularly as to the position, orientation, or use of aspects of the

disclosure described herein. Connection references (e.g., attached, coupled, connected, and

joined) are to be construed broadly and can include intermediate members between a

col...