US 12,065,946 B2
Blade with tip rail cooling
Thomas Earl Dyson, Niskayuna, NY (US); Nicholas William Rathay, Rock City Falls, NY (US); Brendon James Leary, Simpsonville, SC (US); Gregory Terrence Garay, West Chester, OH (US); Gustavo Adolfo Ledezma, Delmar, NY (US); David Wayne Weber, Simpsonville, SC (US); and Aaron Ezekiel Smith, Hermosa Beach, CA (US)
Assigned to GE Infrastructure Technology LLC, Greenville, SC (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on May 2, 2023, as Appl. No. 18/142,577.
Application 17/316,026 is a division of application No. 16/793,138, filed on Feb. 18, 2020, granted, now 11,035,237, issued on Jun. 15, 2021.
Application 16/793,138 is a division of application No. 15/648,541, filed on Jul. 13, 2017, granted, now 10,605,098, issued on Mar. 31, 2020.
Application 18/142,577 is a continuation of application No. 17/316,026, filed on May 10, 2021, granted, now 11,655,718.
Prior Publication US 2024/0011399 A1, Jan. 11, 2024
Int. Cl. F01D 5/18 (2006.01); F01D 5/14 (2006.01); F01D 5/20 (2006.01); F01D 5/30 (2006.01)
CPC F01D 5/187 (2013.01) [F01D 5/141 (2013.01); F01D 5/20 (2013.01); F01D 5/3007 (2013.01); F05D 2220/323 (2013.01); F05D 2240/307 (2013.01); F05D 2260/201 (2013.01); F05D 2260/202 (2013.01); F05D 2260/205 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An airfoil comprising:
a body defining an interior having a cooling passage formed therein, the body extending axially between a leading edge and a trailing edge to define a chord-wise direction and radially between a root and a tip to define a span-wise direction, wherein the tip includes a tip end wall and a tip rail extending from the tip end wall and wherein the span-wise direction terminates in a distal end of the tip rail, the tip rail having:
an exterior surface extending between at least a first surface, a second surface, and a third surface interconnecting the first surface and the second surface, the third surface defining the distal end of the tip rail in the span-wise direction;
a first cooling cavity and a second cooling cavity spaced from each other within the tip rail with respect to the exterior surface of the tip rail;
a cooling conduit fluidly coupling the cooling passage with the first cooling cavity;
a connecting conduit fluidly coupling the first cooling cavity to the second cooling cavity; and
a first film hole extending between the second cooling cavity and the third surface and a second film hole extending between either the first cooling cavity or the second cooling cavity and the first surface;
wherein at least one of the connecting conduit or the cooling conduit is angled with respect to a radial axis of the body extending in the span-wise direction between the cooling passage and the third surface, the radial axis intersecting either one of the connecting conduit or the cooling conduit, respectively, at an angle.