US 11,952,913 B2
Turbine blade with improved swirl cooling performance at leading edge and engine
Yu Rao, Shanghai (CN); Yong Luan, Shanghai (CN); and Yamin Xu, Shanghai (CN)
Assigned to Shanghai Jiaotong University, Shanghai (CN)
Filed by Shanghai Jiaotong University, Shanghai (CN)
Filed on Apr. 21, 2023, as Appl. No. 18/304,387.
Claims priority of application No. 202210452888.7 (CN), filed on Apr. 27, 2022.
Prior Publication US 2024/0076990 A1, Mar. 7, 2024
Int. Cl. F01D 5/18 (2006.01)
CPC F01D 5/187 (2013.01) [F05D 2240/303 (2013.01); F05D 2260/202 (2013.01); F05D 2260/2214 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A turbine blade, comprising:
a blade body;
a division plate;
a plurality of first protruding ridges;
a plurality of second protruding ridges;
a first jet hole group; and
a second jet hole group;
wherein the blade body comprises a suction-side wall surface and a pressure-side wall surface;
the suction-side wall surface comprises a suction-side inner wall surface and a suction-side outer wall surface;
the pressure-side wall surface comprises a pressure-side inner wall surface and a pressure-side outer wall surface;
the division plate is provided at a leading edge of the blade body; the leading edge of the blade body has a cavity enclosed by the division plate, the suction-side wall surface, and the pressure-side wall surface; a stagnation region is formed by a junction between the suction-side wall surface and the pressure-side wall surface; and the stagnation region comprises a first stagnation sub-region at the leading edge of the blade body and a second stagnation sub-region at the leading edge of the cavity;
the suction-side wall surface, the pressure-side wall surface, and the first stagnation sub-region are each provided with a plurality of first film cooling holes along a height direction of the blade body; the first jet hole group and the second jet hole group are provided on the division plate; the first jet hole group comprises a plurality of first jet holes distributed along the height direction of the blade body; and the second jet hole group comprises a plurality of second jet holes distributed along the height direction of the blade body;
the plurality of first protruding ridges are provided on the suction-side inner wall surface along the height direction of the blade body; the plurality of second protruding ridges are provided on the pressure-side inner wall surface along the height direction of the blade body; and the plurality of first protruding ridges and the plurality of second protruding ridges are located on an inner wall surface of the cavity;
the suction-side inner wall surface in the cavity is divided by the plurality of first protruding ridges into a first inner wall surface of the stagnation region and a rear portion of the suction-side inner wall surface; and the pressure-side inner wall surface in the cavity is divided by the plurality of second protruding ridges into a second inner wall surface of the stagnation region and a rear portion of the pressure-side inner wall surface; and
the first inner wall surface of the stagnation region and the second inner wall surface of the stagnation region form an inner wall surface of the first stagnation sub-region.