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US 6,164,914 AGranted
Cool tip blade
AssigneeGeneral Electric Company
InventorsVictor H. S. Correia, Robert F. Manning
Life of this patent
Estimating the term…
Abstract
A turbine blade includes a hollow airfoil having a squealer tip rib extending outboard from a tip cap enclosing the airfoil. An impingement baffle is spaced inboard from the tip cap to define a tip plenum therebetween. Impingement holes extend through the baffle and are directed at the junction of the rib and cap for impinging a coolant jet thereagainst.
Claims20
A turbine blade comprising:
- a hollow airfoil having a squealer tip rib extending outboard from a tip cap enclosing said airfoil;
- and
- means for internally impingement cooling said tip rib at a junction with said tip cap.
A turbine blade comprising:
- a hollow airfoil including pressure and suction sidewalls joined together at leading and trailing edges and extending from a root to tip;
- said tip including a squealer tip rib extending outboard from a junction with a tip cap enclosing said sidewalls to define a tip cavity thereatop;
- an impingement baffle spaced inboard from said tip cap and joined to said sidewalls to define a tip plenum therebetween;
- and
- a plurality of impingement holes extending through said baffle and directed at said junction for impinging a coolant jet thereagainst.
2 more elements
A turbine blade comprising:
- a hollow airfoil including pressure and suction sidewalls joined together at leading and trailing edges, and extending from a root to tip;
- said tip including a squealer tip rib extending outboard from a junction with a tip cap enclosing said sidewalls to define a tip cavity thereatop;
- an impingement baffle spaced inboard from said tip cap and joined to said sidewalls to define a tip plenum therebetween;
- a plurality of impingement holes extending through said baffle and directed at said junction for impinging a coolant jet thereagainst;
- and
- said tip rib is offset at least in part from one of said sidewalls atop said tip cap to position said junction atop said tip plenum for impingement cooling thereof.
3 more elements
Dependencies are inferred from the claim text.