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US 2014/0271147 A1Published application
Blade track assembly with turbine tip clearance control
AssigneeROLLS-ROYCE plc
InventorsRichard C. Uskert, Joseph P. Lamusga, Aaron D. Sippel
Life of this patent
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Abstract
A turbine shroud or blade track assembly adapted to extend around a turbine wheel assembly is disclosed. The turbine shroud includes a carrier and a blade track coupled to the carrier. The blade track is movable between a radially-inward position having a first inner diameter and a radially-outward position having a second inner diameter larger than the first inner diameter.
Claims21
A turbine shroud comprising
- a carrier arranged around an axis and formed to include a first guide slot extending outward in a radial direction from the axis and along a portion of the circumference of the carrier,
- a blade track concentric with the carrier, the blade track movable between a radially-inward position having a first inner diameter and a radially-outward position having a second inner diameter larger than the first inner diameter, and
- an actuator configured to change size in response to a change in temperature, the actuator coupled to the blade track to move the blade track between the radially-inward position and the radially-outward position when the actuator changes size in response to a change in temperature, wherein the actuator is coupled to the carrier by a mover pin that extends from the actuator into the first guide slot so that the blade track moves along a portion of the circumference of the carrier around the axis when the actuator changes size.
A turbine shroud comprising
- a carrier arranged around an axis and formed to include a first guide slot extending outward in a radial direction from the axis and along a portion of the circumference of the carrier,
- a blade track concentric with the carrier, the blade track movable between a radially-inward position having a first inner diameter and a radially-outward position having a second inner diameter larger than the first inner diameter, and
- an actuator ring arranged around the axis and configured to change diameter in response to a change in temperature, the actuator ring coupled to the blade track to move the blade track between the radially-inward position and the radially-outward position when the actuator ring changes diameter in response to a change in temperature, wherein the actuator ring is coupled to the carrier by a mover pin that extends from the actuator ring into the first guide slot so that the actuator ring and the blade track move along a portion of the circumference of the carrier around the axis when the actuator ring changes diameter.
21-30. (canceled)
Dependencies are inferred from the claim text.