Turbine blade with tip rail cooling and sealing

Details Turbine blade with tip rail cooling and sealing Turbine blade with tip rail cooling and sealing

2011-08-16

2011-08-16

Bryant, Kiesha (Department: 2891)

Fluid reaction surfaces (i.e., impellers)

With fluid passage in working member communicating with...

Discharge solely at periphery normal to rotation axis

C416S09600A

Reexamination Certificate

active

07997865

ABSTRACT:
A turbine blade with a squealer pocket formed from a pressure side tip and a suction side tip rail, where two vortex cooling channels extend along the blade tip between the tip rails and an internal cooling air supply cavity to provide vortex cooling for the tip rails. Curved cooling air passages connect the cooling air supply cavity to the vortex channels and then discharge cooling air onto the pressure side wall just below the tip rail crown and into the squealer pocket from the inner surface of the suction side tip rail. Tip cooling holes are also connected to the cooling air supply cavity and discharge cooling air against the inner sides of the two tip rails to promote a vortex flow within the squealer pocket. The curved cooling holes in the vortex cooling channels are offset in order to promote the vortex flow within.

REFERENCES:
patent: 5192192 (1993-03-01), Ourhaan
patent: 5403158 (1995-04-01), Auxier
patent: 2004/0096328 (2004-05-01), Soechting et al.

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