Seals for a gas turbine engine
AssigneeRolls-Royce North American Technologies Inc.
InventorsDavid L. Sutterfield, Gregory W.P. Zeaton
Life of this patent
Estimating the term…
Abstract
A sealing assembly may include a support, an engine component, and a seal. The engine component may be mounted relative to the support to define a gap between the engine component and the support. The seal may be arranged between the support and the engine component to block gasses from passing through the gap. The seal may be adapted to compress and expand to fill the gap during expansion and contraction of the adjacent components that occurs during operation of a gas turbine engine including the sealing assembly.
Claims18
A sealing assembly comprising
- a support having a support-seal surface,
- an engine component having a component-seal surface, the engine component mounted so that the component-seal surface is arranged in spaced-apart confronting relation with the support-seal surface to define a gap between the support and the engine component that grows and shrinks based on the temperature of the support and the engine component, and
- a seal adapted to block gasses from passing through the gap between the support and the engine component, the seal including a mount ring coupled to the support and spaced apart from the engine component, a ceramic tadpole gasket having a compressible head held in contact with the engine component by the mount ring and a flat body extending from the compressible head into a retention channel formed by the mount ring, and a retainer ring arranged to extend into the retention channel of the mount ring to trap the flat body of the tadpole gasket in the retention channel formed by the mount ring so that the tadpole gasket is coupled to the mount ring,
- wherein the mount ring includes a spring portion having a U-shaped cross-section and the spring portion is configured to push the compressible head of the ceramic tadpole gasket into contact with the engine component, the U-shaped cross-section of the spring portion included in the mount ring having legs that extend generally parallel to the component seal surface of the engine component.
A seal adapted for use in a gas turbine engine, the seal comprising
- a mount ring formed to include a retention channel,
- a ceramic tadpole gasket having a compressible head and a flat body extending from the compressible head into the retention channel formed by the mount ring, and
- a retainer ring arranged in the retention channel of the mount ring and sized to trap the flat body of the tadpole gasket in the retention channel formed by the mount ring so that the tadpole gasket is coupled to the mount ring,
- wherein the mount ring includes a spring portion having a U-shaped cross-section forming legs and a bottom that interconnects the legs, and the bottom of the U-shaped cross-section of the spring portion included in the mount ring is spaced apart from the compressible head of the ceramic tadpole gasket.
A method of assembling a seal for a gas turbine engine comprising
- positioning a flat body included in a ceramic tadpole gasket into a retention channel formed by a mount ring;
- the ceramic tadpole gasket including a compressible head and the flat body, and the flat body extending from the compressible head;
- and
- inserting a retainer ring into the retention channel formed by the mount ring to trap the flat body of the ceramic tadpole gasket in the retention channel so that the ceramic tadpole gasket is coupled to the mount ring and the compressible head of the ceramic tadpole gasket is held in position by the mount ring,
- wherein the mount ring includes a spring portion having a U-shaped cross-section forming legs and a bottom that interconnects the legs, and the bottom of the U-shaped cross-section of the spring portion included in the mount ring is spaced apart from the compressible head of the ceramic tadpole gasket.
Dependencies are inferred from the claim text.