Parallel serpentine cooled blade
First Claim
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1. A turbine blade comprising:
- an airfoil integrally joined to a mounting dovetail;
said airfoil including opposite pressure and suction sidewalls joined together at chordally opposite leading and trailing edges and extending longitudinally in span from root to tip;
a first serpentine cooling circuit disposed inside said airfoil along said pressure sidewall;
a second serpentine cooling circuit disposed inside said airfoil along said suction sidewall in parallel with said first circuit, and sharing common partitions therewith;
a third cooling circuit disposed between said leading edge and said first and second circuits, and separated from each other by imperforate partitions in independent circuits; and
each of said first, second, and third circuits terminates in a corresponding row of outlet holes extending through said airfoil in flow communication with a corresponding outlet channel thereof.
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Abstract
A turbine blade includes an airfoil having opposite pressure and suction sidewalls joined together at opposite leading and trailing edges and extending longitudinally from root to tip. A plurality of independent cooling circuits are disposed inside the airfoil correspondingly along the pressure and suction sidewalls thereof. A first serpentine circuit is disposed along the pressure sidewall. A second serpentine circuit is disposed along the suction sidewall in parallel with the first circuit. And a third impingement circuit is disposed at the leading edge forward of the first and second circuits.
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Citations
20 Claims
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1. A turbine blade comprising:
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an airfoil integrally joined to a mounting dovetail;
said airfoil including opposite pressure and suction sidewalls joined together at chordally opposite leading and trailing edges and extending longitudinally in span from root to tip;
a first serpentine cooling circuit disposed inside said airfoil along said pressure sidewall;
a second serpentine cooling circuit disposed inside said airfoil along said suction sidewall in parallel with said first circuit, and sharing common partitions therewith;
a third cooling circuit disposed between said leading edge and said first and second circuits, and separated from each other by imperforate partitions in independent circuits; and
each of said first, second, and third circuits terminates in a corresponding row of outlet holes extending through said airfoil in flow communication with a corresponding outlet channel thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A turbine blade comprising:
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an airfoil integrally joined to a mounting dovetail;
said airfoil including opposite pressure and suction sidewalls joined together at chordally opposite leading and trailing edges and extending longitudinally in span from root to tip;
a first serpentine cooling circuit disposed inside said airfoil along said pressure sidewall;
a second serpentine cooling circuit disposed inside said airfoil along said suction sidewall in parallel with said first circuit, and sharing common partitions therewith; and
a third cooling circuit disposed between said leading edge and said first and second circuits, and separated from each other by imperforate partitions in independent circuits. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification