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US 10,309,224 B2Granted
Split ring spring dampers for gas turbine rotor assemblies
AssigneeUnited Technologies Corporation
InventorsMark E. Marler, Megan Phillips
Life of this patent
Estimating the term…
Abstract
A spring damper includes a split ring body. The split ring body defines a center and a circular gap separating opposed first and second end portions of the split ring body. The first and second end portions are connected by a split ring body segment that is evenly spaced from the center. At least one of the first and second end portions is unevenly spaced from the center in relation to the segment that is evenly spaced with respect to the center.
Claims16
A spring damper for use in a gas turbine engine, comprising:
- a split ring body defining a center and a circular gap separating opposed first and second end portions of the split ring body, wherein the first and second end portions are located on a distal end of a respective one of a first and second segment, the first and second segments each being connected to each other by a segment of the split ring body that is evenly spaced from the center, wherein the segment extends along a substantially uniform offset distance along an arc spanning about 180 degrees to about 270 degrees, wherein at least one of the first and second end portions is unevenly spaced from the center in relation to the segment that is evenly spaced, wherein the spring damper has an unloaded configuration wherein ends of the first and second end portions extend radially outward in relation to the evenly spaced segment and are separated by an unloaded gap width and wherein the spring damper has a statically-loaded configuration wherein ends of the first and second end portions are spaced inwards in relation to the evenly spaced segment.
A gas turbine rotor stage, comprising:
- a disk;
- a disk cover connected to the disk;
- and
- a spring damper connected to the disk cover, including:
- a split ring body defining a center and a circular gap separating opposed first and second end portions of the split ring body, wherein the first and second end portions are located on a distal end of a respective one of a first and second segment, the first and second segments each being connected to each other by a segment of the split ring body that is evenly spaced from the center, wherein the segment extends along a substantially uniform offset distance along an arc spanning about 180 degrees to about 270 degrees, wherein the disk cover imposes sufficient preload on the spring damper such that the first and second end portion segments are spaced radially inward in relation to the evenly spaced segment, and wherein the spring damper has an unloaded configuration wherein ends of the first and second end portions extend radially outward in relation to the evenly spaced segment and are separated by an unloaded gap width and wherein the spring damper has a statically-loaded configuration wherein ends of the first and second end portions are spaced inwards in relation to the evenly spaced segment.
2 more elements
A gas turbine rotor stage, comprising:
- a disk;
- a disk cover connected to the disk;
- and
- a spring damper connected to the disk cover, including:
- a split ring body defining a center and a circular gap separating opposed first and second end portions of the split ring body, wherein the first and second end portions are located on a distal end of a respective one of a first and second segment, the first and second segments each being connected to each other by a segment of the split ring body that is evenly spaced from the center, wherein the segment extends along a substantially uniform offset distance along an arc spanning about 180 degrees to about 270 degrees, wherein the disk cover imposes sufficient preload on the spring damper such that the first and second end portion segments are evenly spaced from the center in relation to the evenly spaced segment, and wherein the spring damper has an unloaded configuration wherein ends of the first and second end portions extend radially outward in relation to the evenly spaced segment and are separated by an unloaded gap width and wherein the spring damper has a statically-loaded configuration wherein ends of the first and second end portions are spaced inwards in relation to the evenly spaced segment.
2 more elements
Dependencies are inferred from the claim text.