Boss with integral fire protection
AssigneePratt & Whitney Canada Corp.
InventorThomas Veitch
Life of this patent
Estimating the term…
Abstract
A boss with which a component of a gas turbine engine is attachable is provided. The boss includes a base comprising inboard and outboard base portions, an inner wall extendible from the inboard base portion and along the component to surround a seal of the component and having an interior diameter configured to compress the seal radially inwardly and a heat shield. The heat shield is integrally extendible from the outboard base portion and along the component to surround the inner wall at a distance to define a cavity with the inner wall. The heat shield includes a distal edge portion having a terminal diameter less than a diameter of the outboard base portion.
Claims12
A boss with which a component of a gas turbine engine is attachable, the boss comprising:
- a base comprising inboard and outboard base portions;
- an inner wall extendible from the inboard base portion and along the component to surround a seal of the component and having an interior diameter configured to compress the seal radially inwardly;
- and
- a heat shield integrally extendible from the outboard base portion and along the component to surround the inner wall at a distance such that an entirety of the heat shield is monolithically connected to the entirety of the inner wall solely by way of the base to define, with the inner wall, a cavity extending from the inboard base portion along the entirety of the inner wall, the heat shield comprising a distal edge portion having a terminal diameter less than a diameter of the outboard base portion.
A gas turbine engine boss assembly, comprising:
- a transfer tube having a longitudinal axis and a radial dimension perpendicular to the longitudinal axis, the transfer tube comprising:
- a transfer tube end defined relative to the longitudinal axis;
- and
- a first flange extending radially outwardly along the radial dimension from the transfer tube end;
- and
- a second flanges extending radially outwardly along the radial dimension from and proximate to the transfer tube end;
- a seal disposable between the first and second flanges along the longitudinal axis;
- and
- a boss, comprising:
- a base comprising an inboard base portion, which has a first diameter defined along the radial dimension, and an outboard base portion, which surrounds the inboard base portion and which has a second diameter that is larger than the first diameter and is defined along the radial dimension;
- an inner wall extending along the longitudinal axis from the inboard base portion and along the transfer tube to surround the first and second flanges and the seal and having an interior diameter configured to compress the seal radially inwardly;
- and
- a heat shield integrally extending along the longitudinal axis from the outboard base portion and along the transfer tube to surround the inner wall at a distance such that an entirety of the heat shield is monolithically connected to the entirety of the inner wall solely by way of the base to define, with the inner wall, a cavity extending along the longitudinal axis from the inboard base portion along the entirety of the inner wall, the heat shield comprising a distal edge portion, which is distant from the outboard base portion and which has a terminal diameter less than the second diameter.
Dependencies are inferred from the claim text.