Patent attributes
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.
