System for damping vibrations in a turbine
AssigneeGeneral Electric Company
InventorsHerbert Chidsey Roberts, III, Curtis Alan Johnson, Glenn Curtis Taxacher
Life of this patent
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Abstract
A system for damping vibrations in a turbine includes a first rotating blade having a first ceramic airfoil, a first ceramic platform connected to the first ceramic airfoil, and a first root connected to the first ceramic platform. A second rotating blade adjacent to the first rotating blade includes a second ceramic airfoil, a second ceramic platform connected to the second ceramic airfoil, and a second root connected to the second ceramic platform. A non-metallic platform damper has a first position in simultaneous contact with the first and second ceramic platforms.
Claims20
A system for damping vibrations in a turbine, comprising
- a. a first rotating blade having a first ceramic airfoil, a first ceramic platform connected to the first ceramic airfoil, and a first root connected to the first ceramic platform;
- b. a second rotating blade adjacent to the first rotating blade, wherein the second rotating blade includes a second ceramic airfoil, a second ceramic platform connected to the second ceramic airfoil, and a second root connected to the second ceramic platform;
- and
- c. a non-metallic platform damper having a first position in simultaneous contact with the first and second ceramic platforms, the non-metallic platform damper comprising a plurality of spheres connected to one another.
A system for damping vibrations in a turbine, comprising:
- a. a first rotating blade having a first ceramic airfoil and a first ceramic root connected to the first ceramic airfoil;
- b. a first adaptor configured to connect the first rotating blade to a rotor wheel, the first adaptor having a slot for receipt of the first ceramic root, the slot and the first ceramic root having complementary shapes;
- c. a second rotating blade adjacent to the first rotating blade, wherein the second rotating blade includes a second ceramic airfoil and a second ceramic root connected to the second ceramic airfoil;
- d. a first non-metallic root damper extending axially within the slot in simultaneous contact with the first ceramic root and the first adaptor;
- and
- e. a second non-metallic root damper extending radially in simultaneous contact with the first ceramic root and the second ceramic root.
A system for damping vibrations in a turbine, comprising:
- a. a first rotating blade having a first ceramic airfoil and a first ceramic root connected to the first ceramic airfoil, the first ceramic root received within a first slot of a rotor wheel, the first slot and the first ceramic root having complementary shapes;
- b. a second rotating blade adjacent to the first rotating blade, wherein the second rotating blade includes a second ceramic airfoil and a second ceramic root connected to the second ceramic airfoil;
- and
- c. a non-metallic root damper extending axially in the first slot in simultaneous contact with the first ceramic root and the rotor wheel such that a gap is formed between the first ceramic root and the rotor wheel.
Dependencies are inferred from the claim text.