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US 8,506,252 B1Granted
Turbine blade with multiple impingement cooling
AssigneeFlorida Turbine Technologies, Inc.
InventorGeorge Liang
Life of this patent
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Abstract
A turbine rotor blade with a cooling air channel formed in a mid-chord region, the channel includes a number of rows of semi-circular shaped ribs that extend across the channel and open toward the blade tip. Adjacent ribs form metering and impingement passages that discharge a jet of cooling air against the rib above it. The open ends of the ribs form vortex generating passages in which the impingement cooling air flows into to form a vortex flow pattern in the cooling air.
Claims5
A turbine rotor blade comprising:
- an airfoil extending from a platform;
- the airfoil having a pressure side wall and a suction side wall with a cooling air channel extending from the platform to a blade tip;
- a plurality of rows of ribs extending along a chordwise direction of the blade and across the cooling air channel;
- the ribs having a concave shape with an open end facing toward the blade tip;
- adjacent ribs in a row forming a metering and impingement passage;
- and,
- adjacent rows of ribs being staggered such that a metering and impingement passage is located around a center of a concave rib directly above the metering and impingement passage.
4 more elements
Dependencies are inferred from the claim text.