Turbomachine sealing ring
AssigneeSafran Aircraft Engines
InventorsEtienne Gérard Joseph Canelle, Jacques Marcel Arthur Bunel, Bruno Giardini
Life of this patent
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Abstract
A turbomachine sealing ring has an axis of revolution and includes an annular support, an annular coating made of abradable material which is carried by the support, and an annular thermal protection plate which is carried by the support. The ring is divided into sectors and has a plurality of ring sectors disposed circumferentially next to one another about the axis. Each ring sector has a support sector, a coating sector, and a plate sector. Each plate sector ling includes a flat tab that is pressed against a face of the corresponding support sector and is fixed to this face by brazing. The tab is inserted into a through-slot in the support sector in order to improve its integrity in operation.
Claims13
A turbomachine sealing ring having an axis of revolution and comprising:
- an annular support which comprises fastening elements and/or hooking elements configured to cooperate with a stator element of the turbomachine,
- an annular coating made of abradable material which is secured to said support, and
- an annular thermal protection plate which is secured to said support,
- said ring being sectorised and comprising a plurality of ring sectors arranged circumferentially next to one another about said axis, each ring sector comprising a support sector, a coating sector and a plate sector, each plate sector comprising a flat tab pressed against a face of the corresponding support sector and fixed to this face by brazing,
- wherein said tab is inserted into a through-slot in said support sector in order to improve its integrity in operation,
- and wherein said coating bears on or is brazed to the tab of each plate sector.
A turbomachine sealing ring having an axis of revolution and comprising:
- an annular support which comprises fastening elements and/or hooking elements configured to cooperate with a stator element of the turbomachine,
- an annular coating made of abradable material which is secured to said support, and
- an annular thermal protection plate which is secured to said support,
- said ring being sectorised and comprising a plurality of ring sectors arranged circumferentially next to one another about said axis, each ring sector comprising a support sector, a coating sector and a plate sector, each plate sector comprising a flat tab pressed against a face of the corresponding support sector and fixed to this face by brazing,
- wherein said tab is inserted into a through-slot in said support sector in order to improve its integrity in operation,
- and wherein said support comprises a first annular wall extending perpendicular to said axis and the outer periphery of which is connected to a second cylindrical or frustoconical wall to which said coating is fixed, and the inner periphery of which is connected to a cylindrical fastening rim, said tab of each plate sector being applied against a free face of a sector of the first wall and inserted into a through-slot in the second wall of a sector.
A turbomachine sealing ring having an axis of revolution and comprising:
- an annular support which comprises fastening elements and/or hooking elements configured to cooperate with a stator element of the turbomachine,
- an annular coating made of abradable material which is secured to said support, and
- an annular thermal protection plate which is secured to said support,
- said ring being sectorised and comprising a plurality of ring sectors arranged circumferentially next to one another about said axis, each ring sector comprising a support sector, a coating sector and a plate sector, each plate sector comprising a flat tab pressed against a face of the corresponding support sector and fixed to this face by brazing,
- wherein said tab is inserted into a through-slot in said support sector in order to improve its integrity in operation,
- and wherein the tab of each plate sector is rectangular in shape and has a circumferential extent around said axis representing at most 30% of the circumferential extent of the plate sector.
A turbomachine sealing ring having an axis of revolution and comprising:
- an annular support which comprises fastening elements and/or hooking elements configured to cooperate with a stator element of the turbomachine,
- an annular coating made of abradable material which is secured to said support, and
- an annular thermal protection plate which is secured to said support,
- said ring being sectorised and comprising a plurality of ring sectors arranged circumferentially next to one another about said axis, each ring sector comprising a support sector, a coating sector and a plate sector, each plate sector comprising a flat tab pressed against a face of the corresponding support sector and fixed to this face by brazing,
- wherein said tab is inserted into a through-slot in said support sector in order to improve its integrity in operation,
- and wherein the slot of each support sector has a generally circumferential orientation about said axis and has a circumferential extent representing at most 30% of the circumferential extent of the support sector.
Dependencies are inferred from the claim text.