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US 8,770,936 B1Granted
Turbine blade with near wall cooling channels
AssigneeFlorida Turbine Technologies, Inc.
InventorGeorge Liang
Life of this patent
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Abstract
A turbine rotor blade with a thin thermal skin bonded over a spar to enclose serpentine flow cooling channels that extend from a platform to a blade tip along the airfoil walls. The radial channels discharge into a collection cavity and then flow through exit holes in the trailing edge. The radial cooling channels are formed as semi-circular shaped channels to maximize surface area on the hot side wall and on the cold side wall of the spar.
Claims8
A turbine rotor blade comprising:
- a spar forming a cooling air collection cavity on an inside and a number of serpentine radial flow cooling channels on an outer surface;
- a thin thermal skin bonded to the outer surface of the spar to enclose the serpentine radial flow cooling channels;
- a row of exit holes on the trailing edge connected directly to the cooling air collection cavity;
- the radial flow cooling channels have a semi-circular shape with a flat face against the thin thermal skin;
- and,
- the upward flowing channel and the downward flowing channel form a half-circular shape with a rib separating the two channels.
3 more elements
Dependencies are inferred from the claim text.