Cooling arrangement for airfoil stator vane trailing edge
First Claim
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1. In a turbine airfoil-shaped stator vane of thin wall design having internal pin fins in staggered rows extending between the opposite walls of the vane in the area closely upstream from spanwise openings formed in the trailing edge of the vane, the improvement comprising:
- a series of first ribs having a height to extend completely between and to connect said opposite walls of said vane to each other and extending longitudinally in a flowwise direction in intersecting relation to said staggered rows of pin fins but out of intersecting relation with any individual ones of said pin fins, said ribs including spanwise protruding means thereon for inducing turbulent air flow at locations therealong corresponding to the locations of pin fins displaced by the presence of said ribs.
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Abstract
A hollow, airfoil shaped stator vane 10 is provided in its trailing edge portion with staggered rows of pin fins 20, 22 and 24 and with longitudinal ribs 26 which provide the required stiffness for the thin wall design of the vane, the ribs being provided with protuberances 36 in those locations where the turbulence inducing pin fins are displaced by the presence of the ribs.
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Citations
3 Claims
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1. In a turbine airfoil-shaped stator vane of thin wall design having internal pin fins in staggered rows extending between the opposite walls of the vane in the area closely upstream from spanwise openings formed in the trailing edge of the vane, the improvement comprising:
a series of first ribs having a height to extend completely between and to connect said opposite walls of said vane to each other and extending longitudinally in a flowwise direction in intersecting relation to said staggered rows of pin fins but out of intersecting relation with any individual ones of said pin fins, said ribs including spanwise protruding means thereon for inducing turbulent air flow at locations therealong corresponding to the locations of pin fins displaced by the presence of said ribs. - View Dependent Claims (2, 3)
Specification