Turbine blade with film cooling slots
First Claim
1. An air cooled turbine rotor blade comprising:
- an airfoil having a leading edge and a trailing edge;
the airfoil having a pressure side wall and a suction side wall both extending between the leading edge and the trailing edge;
a row of exit slots arranged along the pressure side wall of the airfoil adjacent to the trailing edge region of the airfoil;
the row of exit slots extending from adjacent to a platform of the blade to adjacent to a tip of the blade;
the row of exit slots including an upper span section of slots, a mid-span section of slots and a lower span section of slot; and
,the upper span exit slots discharging film cooling air in a direction toward the blade tip, the mid-span exit slots discharging film cooling air in a chordwise direction of the airfoil, and the lower span exit slots discharging film cooling air in a direction toward the platform.
3 Assignments
0 Petitions
Accused Products
Abstract
A turbine rotor blade with a row of exit slots adjacent to a trailing edge region of the airfoil that extends from the platform to the blade tip, where the row of exit slots is formed into three groups that include an upper span group, a mid-span group and a lower span group. The upper span group discharges film cooling air upward with respect to the airfoil chordwise direction, the mid-span group discharges along the chordwise direction, and the lower span group discharges in a direction downward with respect to the chordwise direction. Each exit slot is formed with a plurality of metering inlet holes that discharge into a first diffusion section and then a second diffusion section.
27 Citations
8 Claims
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1. An air cooled turbine rotor blade comprising:
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an airfoil having a leading edge and a trailing edge; the airfoil having a pressure side wall and a suction side wall both extending between the leading edge and the trailing edge; a row of exit slots arranged along the pressure side wall of the airfoil adjacent to the trailing edge region of the airfoil; the row of exit slots extending from adjacent to a platform of the blade to adjacent to a tip of the blade; the row of exit slots including an upper span section of slots, a mid-span section of slots and a lower span section of slot; and
,the upper span exit slots discharging film cooling air in a direction toward the blade tip, the mid-span exit slots discharging film cooling air in a chordwise direction of the airfoil, and the lower span exit slots discharging film cooling air in a direction toward the platform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification