Turbine blade with tip rail cooling and sealing
First Claim
1. A turbine blade for use in a gas turbine engine, the blade comprising:
- an airfoil having a pressure side wall and a suction side wall;
an internal cooling air supply channel formed within the airfoil;
a single tip rail extending from a trailing edge region of the blade tip toward the leading edge region of the blade tip, the single tip rail extending along the blade tip mid-chord region; and
,a row of cooling holes connected to the internal cooling air supply channel and opening onto the tip floor adjacent to the forward side of the tip rail.
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Accused Products
Abstract
A turbine blade with a single tip rail extending along the mid-chord section of the blade tip from the trailing edge and around the leading edge region offset from the leading edge wall and ending just before the pressure side wall of the airfoil. The tip rail includes a forward side with a concave shaped cross section to form a vortex flow of cooling air on the side of the tip rail. A row of cooling holes discharge cooling air into the vortex flow formed along the concave forward side of the tip rail the tip rail also includes an aft side that is slanted downward to also form a vortex flow. The pressure side wall of the airfoil includes a concave shaped slot extending along the pressure side wall just below the tip corner, and a row of cooling holes to discharge film cooling air upward toward the tip corner.
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Citations
8 Claims
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1. A turbine blade for use in a gas turbine engine, the blade comprising:
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an airfoil having a pressure side wall and a suction side wall; an internal cooling air supply channel formed within the airfoil; a single tip rail extending from a trailing edge region of the blade tip toward the leading edge region of the blade tip, the single tip rail extending along the blade tip mid-chord region; and
,a row of cooling holes connected to the internal cooling air supply channel and opening onto the tip floor adjacent to the forward side of the tip rail. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification