Cooled turbine vane

Details Cooled turbine vane Cooled turbine vane

F - Mech Eng,Light,Heat,Weapons

01

D

170/81

F01D 5/18 (2006.01)

Patent

CA 1111352

11 ABSTRACT OF THE DISCLOSURE A hollow gas turbine vane is shown enclosing, in spaced relation, a vane insert for receiving cooling air. The insert has a plurality of apertures for selectively directing jets of the cooling air against the internal walls of the vane. A portion of the air is discharged from within the vane chamber through a slit in the trail- ing edge which contains cooling pins extending trans- versely thereacross to maintain the slit dimensionally stable and also induce turbulence in the exhausting cool- ing air to improve its cooling effectiveness. Certain apertures in the insert adjacent the trailing edge are selectively directed to cause jets of the cooling air to impinge at the base of certain of the pins in the inlet area of the slit to promote turbulence in the air entering the slit and adjacent the internal face, thereby maxi- mizing heat transfer from the slit walls to the air.

355830

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