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US 6,824,359 B2Granted
Turbine blade
AssigneeUnited Technologies Corporation
InventorsWieslaw A. Chlus, Stanley J. Funk
Life of this patent
Estimating the term…
Abstract
A turbine blade has a platform and an airfoil extending from a root at the platform to a tip. The airfoil has an internal cooling passageway network including at least one trailing edge cavity. A group of trailing edge holes extends from the trailing edge to the trailing edge cavity and a group of tip holes extends from the tip to the trailing edge cavity.
Claims23
A blade comprising:
- a platform;
- and
- an airfoil having:
- a root at the platform;
- a tip;
- leading and trailing edges;
- and
- an internal cooling passageway network including:
- at least one trailing edge cavity;
- a plurality of trailing edge holes extending from the trailing edge to the trailing edge cavity;
- and
- a plurality of tip holes extending from the tip to the trailing edge cavity and having a circular cylindrical surface of a length at least five times longer than a diameter.
9 more elements
A blade comprising:
- a platform;
- and
- an airfoil having:
- a root at the platform;
- a tip;
- leading and trailing edges;
- and
- an internal cooling passageway network including:
- at least one trailing edge cavity;
- a plurality of trailing edge holes extending from the trailing edge to the trailing edge cavity;
- and
- a plurality of tip holes extending from the tip to the trailing edge cavity
- wherein:
- the blade comprises a body and a tip insert and has a tip plenum in communication with the cooling passageway network and bounded by a wall portion of the casting along pressure and suction sides of the airfoil and an outboard surface of the tip insert subflush to a rim of the wall portion.
11 more elements
A blade comprising:
- a platform;
- and
- an airfoil having:
- a root at the platform;
- a tip having a relieved area;
- leading and trailing edges;
- and
- an internal cooling passageway network including:
- at least one trailing edge cavity;
- a plurality of trailing edge holes extending from the trailing edge to the trailing edge cavity;
- and
- a plurality of tip holes extending from the tip to the trailing edge cavity, the relieved area extending only partially across openings of said tip holes.
9 more elements
A turbine blade comprising:
- a platform;
- and
- an airfoil having:
- a root at the platform;
- a tip having a rim;
- leading and trailing edges;
- an internal cooling passageway network having
- a trailing cavity;
- and
- plurality of tip holes extending from the trailing cavity to the rim;
- and means for preventing contact-induced occlusion of said tip holes.
8 more elements
A method for manufacturing a blade comprising:
- casting a turbine element precursor comprising:
- a platform;
- and
- an airfoil:
- extending along a length from a proximal root at the platform to a distal end;
- having leading and trailing edges separating pressure and suction sides;
- and
- having a cooling passageway network including at least one trailing edge cavity;
- machining a first plurality of holes in the airfoil extending from the trailing edge to the trailing edge cavity;
- machining a second plurality of holes in the airfoil extending from the tip to the trailing edge cavity;
- and
- forming a chamfer along a trailing pressure side portion of said tip, said chamfer extending Only partially through openings of said second plurality of holes.
9 more elements
A method for manufacturing a blade comprising:
- casting a turbine element precursor comprising:
- a platform;
- and
- an airfoil:
- extending along a length from a proximal root at the platform to a distal end;
- having leading and trailing edges separating pressure and suction sides;
- and
- having a cooling passageway network including at least one trailing edge cavity;
- machining a first plurality of holes in the airfoil extending from the trailing edge to the trailing edge cavity;
- and
- machining a second plurality of holes in the airfoil extending from the tip to the trailing edge cavity, the second plurality of holes fanning a continuous fanning terminal group of holes with at least some of the first plurality of holes.
8 more elements
Dependencies are inferred from the claim text.