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.
Claims18
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 to define a cavity with the inner wall, the heat shield comprising a distal edge portion having a terminal diameter less than a diameter of the outboard base portion, wherein the boss further comprises at least one or more of:
- radial ribs extending at least between the inner wall and the heat shield;
- andtangential ribs extending at least between the inner wall and the heat shield.
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 to define a cavity with the inner wall, the heat shield comprising a distal edge portion having a terminal diameter less than a diameter of the outboard base portion, wherein the boss further comprises fireproof and/or fire-resistant material in at least the cavity.
An additively manufactured metallic boss with which a component of a gas turbine engine is attachable, the additively manufactured metallic 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 non-metallic seal of the component and having an interior diameter configured to compress the non-metallic seal radially inwardly;a heat shield 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 comprising a distal edge portion having a terminal diameter less than a diameter of the outboard base portion;
- and fireproof and/or fire-resistant material in at least the cavity.
A gas turbine engine boss assembly, comprising:
- a transfer tube comprising first and second flanges extending radially outwardly from and proximate to a transfer tube end;
- a seal disposable between the first and second flanges;
- and a boss, comprising:
- a base comprising inboard and outboard base portions;
- an inner wall extendible 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 extendible from the outboard base portion and along the transfer tube to surround the inner wall at a distance to define a cavity with the inner wall, the heat shield comprising a distal edge portion having a terminal diameter less than a diameter of the outboard base portion, wherein the boss further comprises at least one or more of:
- radial ribs extending at least between the inner wall and the heat shield;
- and tangential ribs extending at least between the inner wall and the heat shield.
A gas turbine engine boss assembly, comprising:
- a transfer tube comprising first and second flanges extending radially outwardly from and proximate to a transfer tube end;
- a seal disposable between the first and second flanges;
- and a boss, comprising:
- a base comprising inboard and outboard base portions;
- an inner wall extendible 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 extendible from the outboard base portion and along the transfer tube to surround the inner wall at a distance to define a cavity with the inner wall, the heat shield comprising a distal edge portion having a terminal diameter less than a diameter of the outboard base portion, wherein the boss further comprises fireproof and/or fire-resistant material in at least the cavity.
Dependencies are inferred from the claim text.