Turbine shroud thermal distortion control
AssigneeUnited Technologies Corporation
InventorsJun Shi, Kevin E. Green, Shaoluo L. Butler, Gajawalli V. Srinivasan, Glenn N. Levasseur
Life of this patent
Estimating the term…
Abstract
A shroud suitable for use in combination with an adjacent rotor blade includes a leading portion comprising a first thickness, and a trailing portion adjacent to the leading portion and comprising a second thickness, wherein the second thickness is less than the first thickness so that stiffness in the leading portion is greater than in the trailing portion and radial expansion by thermal growth of the leading portion of the shroud is constrained.
Claims11
A shroud suitable for use in combination with an adjacent rotor blade, the shroud comprising:
- a leading portion comprising a first thickness;
- and
- a trailing portion adjacent to the leading portion and comprising a second thickness, wherein the second thickness is less than the first thickness so that stiffness in the leading portion is greater than in the trailing portion and radial expansion by thermal growth of the leading portion of the shroud is constrained.
A shroud assembly suitable for use in a gas turbine engine, the shroud assembly comprising:
- a shroud comprising:
- a leading portion;
- a trailing portion adjacent to the leading portion;
- and
- a clamping device exerting a radially inward force on the leading portion for restraining a thermal growth of the leading portion in a radially outward direction while allowing unconstrained thermal growth of the trailing portion to even out thermal growth of the shroud.
A shroud for a gas turbine engine, the shroud comprising:
- a leading portion having a leading edge and a first set of circumferentially spaced slots at the leading edge that break up a leading portion into circumferentially spaced segments separated by the first set of slots;
- and
- a trailing portion adjacent to the leading portion, the trailing portion having a trailing edge.
Dependencies are inferred from the claim text.