Turbine bucket platform for controlling incursion losses
AssigneeGeneral Electric Company
InventorsMoorthi Subramaniyan, Rohit Chouhan, Prabakaran Modachur Krishnan
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Abstract
Embodiments of the invention relate generally to rotary machines and, more particularly, to the reducing mixing of packing leakage and the main flow of hot gas or steam in gas and steam turbines, respectively. In one embodiment, the invention provides a turbine bucket comprising: a platform portion; an airfoil extending radially outward from the platform portion; and at least one recess extending radially inward into the platform portion, the at least one recess being disposed at an angle relative to a leading edge of the platform portion.
Claims20
A turbine bucket comprising:
- a platform portion;
- an airfoil extending radially outward from the platform portion;
- and
- at least one recess extending radially inward into the platform portion, the at least one recess being disposed at an angle relative to a leading edge of the platform portion.
A turbine comprising:
- a first turbine bucket including:
- a first platform portion;
- a first airfoil extending radially outward from the first platform portion;
- and
- at least one recess extending radially inward into the first platform portion, the at least one recess being disposed at an angle relative to a leading edge of the first platform portion;
- and
- a second turbine bucket including:
- a second platform portion;
- a second airfoil extending radially outward from the second platform portion;
- and
- at least one recess extending radially inward into the first platform portion, the at least one recess being disposed at an angle relative to a leading edge of the second platform portion.
Dependencies are inferred from the claim text.