US 9,810,072 B2
Rotor blade cooling
Zhirui Dong, Simpsonville, SC (US); Xiuzhang James Zhang, Simpsonville, SC (US); and Jason Adam Neville, Greenville, SC (US)
Assigned to GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on May 28, 2014, as Appl. No. 14/288,748.
Prior Publication US 2015/0345303 A1, Dec. 3, 2015
Int. Cl. F01D 5/18 (2006.01); F01D 5/08 (2006.01)
CPC F01D 5/186 (2013.01) [F01D 5/187 (2013.01); F01D 5/085 (2013.01); F05D 2260/202 (2013.01); F05D 2260/2212 (2013.01); Y02T 50/676 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A rotor blade, comprising:
a root portion;
an airfoil portion extending radially outwardly from the root portion, the airfoil portion having a leading edge and a trailing edge, wherein the airfoil terminates radially at a tip portion;
a forward primary cooling passage defined within the rotor blade and having a first inlet disposed along the root portion and a first outlet disposed along the tip portion to permit a coolant to exit the airfoil portion through the tip portion, wherein the forward primary cooling passage is in fluid communication with a first trailing edge cooling passage disposed along the trailing edge of the airfoil portion;
an intermediate primary cooling passage defined within the rotor blade and having a second inlet disposed along the root portion and a second outlet disposed along the tip portion to permit the coolant to exit the airfoil portion through the tip portion, wherein the intermediate primary cooling passage is in fluid communication with a second trailing edge cooling passage disposed along the trailing edge of the airfoil portion;
an aft primary cooling passage defined within the rotor blade and having a third inlet disposed along the root portion and a third outlet disposed along the tip portion to permit the coolant to exit the airfoil portion through the tip portion, wherein the aft primary cooling passage is in fluid communication with a third trailing edge cooling passage disposed along the trailing edge of the airfoil portion; and
wherein the forward primary cooling passage, the intermediate primary cooling passage and the aft primary cooling passage are fluidly isolated from each other within the rotor blade.