TURBINE ROTOR BLADE PLATFORM COOLING
First Claim
1. A platform cooling arrangement for a turbine rotor blade having a platform at an interface between an airfoil and a root, the root including attachment means and, extending between the attachment means and the platform, a shank, wherein, along the side of the platform that corresponds with a suction face of the airfoil, the platform comprises a suction side that includes a topside extending from an airfoil base to a suction side slashface, and wherein the platform overhangs a shank cavity formed in the shank, the platform cooling arrangement comprising:
- a pocket formed in an underside region of the platform, the pocket comprising a mouth that fluidly communicates with the shank cavity;
a manifold extending from a first end near the suction side slashface to a second end near a pressure side slashface of the platform, the manifold including a connection to the pocket near the first end of the manifold; and
cooling apertures formed within the platform that extend from a connection made with one of the pocket and the manifold to ports formed within one of the suction side slashface and an aft edge of the platform.
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Accused Products
Abstract
A platform cooling arrangement for a turbine rotor blade having a platform at an interface between an airfoil and a root, the root including attachment means and a shank, wherein the platform comprises a suction side that includes a topside extending from an airfoil base to a suction side slashface, and wherein the platform overhangs a shank cavity. The platform cooling arrangement may include: a pocket formed in an underside region of the platform, the pocket comprising a mouth that fluidly communicates with the shank cavity; a manifold extending from the suction side slashface to a pressure side slashface, the manifold including a connection to the pocket; and cooling apertures that extend from connections made with the pocket and manifold to ports.
30 Citations
25 Claims
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1. A platform cooling arrangement for a turbine rotor blade having a platform at an interface between an airfoil and a root, the root including attachment means and, extending between the attachment means and the platform, a shank, wherein, along the side of the platform that corresponds with a suction face of the airfoil, the platform comprises a suction side that includes a topside extending from an airfoil base to a suction side slashface, and wherein the platform overhangs a shank cavity formed in the shank, the platform cooling arrangement comprising:
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a pocket formed in an underside region of the platform, the pocket comprising a mouth that fluidly communicates with the shank cavity; a manifold extending from a first end near the suction side slashface to a second end near a pressure side slashface of the platform, the manifold including a connection to the pocket near the first end of the manifold; and cooling apertures formed within the platform that extend from a connection made with one of the pocket and the manifold to ports formed within one of the suction side slashface and an aft edge of the platform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of manufacturing a platform cooling arrangement in a turbine rotor blade having a platform at an interface between an airfoil and a root, the root including attachment means and, extending between the attachment means and the platform, a shank, wherein, along the side of the platform that corresponds with a suction face of the airfoil, the platform comprises a suction side that includes a topside extending from an airfoil base to a suction side slashface, and wherein the platform overhangs a shank cavity formed in the shank, the platform cooling arrangement comprising:
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forming a pocket in an underside region of the platform, the pocket comprising a mouth that fluidly communicates with the shank cavity; machining via a drilling process a manifold, the manifold extending linearly and in an approximate circumferential direction from the pressure side slashface to the suction side slashface, the linear path of the manifold being predetermined such that an offset is maintained from the aft edge of the platform and the manifold bisects the pocket along the way; machining cooling apertures within the platform that extend from a connection made to the pocket to corresponding ports formed on the suction side slashface; and machining cooling apertures within the platform that extend from a connection made to the manifold to a corresponding ports formed in an aft edge of the platform. - View Dependent Claims (23, 24, 25)
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Specification