Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2006-09-27
2009-10-06
Look, Edward (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
Reexamination Certificate
active
07597539
ABSTRACT:
A turbine blade having a squealer tip includes a trailing edge tip rail formed as an extension of the pressure side tip rail and the suction side tip rail. Positioned along the trailing edge tip rail is a pressure side vortex pocket and a suction side vortex pocket, and a plurality of angled cooling holes opening onto the tip cap adjacent to the vortex pockets, the holes being angled away from the vortex pockets. A row of film cooling holes on the pressure side wall and angled upward forces the hot gas flow up and over the blade pressure side edge and into a tip rail channel. Vortex flow is developed in both the vortex pockets, and with the addition of the angled cooling holes and pressure side wall cooling holes the trailing edge tip rail provides improved sealing and cooling for the blade tip.
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Ellis Ryan H
Florida Turbine Technologies, Inc.
Look Edward
Ryznic John
LandOfFree
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