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US 9,757,920 B2Granted
Flexible ceramic matrix composite seal
AssigneeROLLS-ROYCE plc
InventorAndrew J. Lazur
Life of this patent
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Abstract
A ceramic matrix composite seal is disclosed. The ceramic matrix composite seal including a ceramic matrix and a number of ceramic fiber fabrics embedded in the ceramic matrix. The ceramic matrix composite seal is formed into a strip with a desired geometry such that the seal strip is configured to be assembled with a number of components to create a seal between the components.
Claims15
A ceramic matrix composite seal comprising:
- a ceramic matrix,
- a first fiber assembly embedded in the ceramic matrix, the first fiber assembly including a first top fabric and a second top fabric,
- a second fiber assembly embedded in the ceramic matrix, the second fiber assembly including a first bottom fabric and a second bottom fabric, the second fiber assembly spaced apart from and opposite the first fiber assembly,
- wherein the second top fabric of the first fiber assembly is coupled to the first bottom fabric of the second fiber assembly by the ceramic matrix, the first top fabric and the second top fabric determine the shape of the first fiber assembly, and the first bottom fabric and the second bottom fabric determine the shape of the second fiber assembly and,
- flexible seal slots including a first flexible seal slot and a second flexible seal slot formed in first and second sidewalls, respectively, of the ceramic matrix and sandwiched between the first fiber assembly and the second fiber assembly and extending longitudinally along an entire length of the ceramic matrix composite seal, wherein the ceramic matrix composite seal includes a first component and a second component and the flexible seal slots are in contact with the first component and the second component such that the first component and the second component remain in contact while the components expand, contract, and vibrate, wherein the ceramic matrix composite seal has a first end portion and a second end portion, and wherein the first end portion of the ceramic matrix composite seal includes the first sidewall, the first flexible seal slot, and first end portions of the first top fabric and the second bottom fabric that are received into a first slot of the first component and the second end portion of the ceramic matrix composite seal includes the second sidewall, the second flexible seal slot, and second end portions of the first top fabric and the second bottom fabric that are received into a second slot of the second component.
2 more elements
A ceramic matrix composite seal comprising:
- a ceramic matrix,
- a first fiber assembly embedded in the ceramic matrix, the first fiber assembly including a first top fabric and a second top fabric,
- a second fiber assembly embedded in the ceramic matrix, the second fiber assembly including a first bottom fabric and a second bottom fabric, the second fiber assembly spaced apart from and opposite the first fiber assembly, and
- flexible seal slots including a first flexible seal slot and a second flexible seal slot formed in first and second sidewalls, respectively, of the ceramic matrix and sandwiched between the first fiber assembly and the second fiber assembly and extending longitudinally along an entire length of the ceramic matrix composite seal, wherein the ceramic matrix composite seal includes a first component and a second component and wherein the flexible seal slots are in contact with the first component and the second component such that the first component and the second component remain in contact while the components expand, contract, and vibrate, wherein the ceramic matrix composite seal has a first end portion and a second end portion, wherein the first end portion of the ceramic matrix composite seal includes the first sidewall, the first flexible seal slot, and first end portions of the first top fabric and the second bottom fabric that are received into a first slot of the first component and the second end portion of the ceramic matrix composite seal includes the second sidewall, the second flexible seal slot, and second end portions of the first top fabric and the second bottom fabric that are received into a second slot of the second component,
- wherein the second top fabric of the first fiber assembly is coupled to the first bottom fabric of the second fiber assembly by the ceramic matrix, the first top fabric and the second top fabric determine the shape of the first fiber assembly, and the first bottom fabric and the second bottom fabric determine the shape of the second fiber assembly.
2 more elements
Dependencies are inferred from the claim text.