초록 ▼

In the cooling system for the gas turbine blade, the apparatus of the present disclosure ensures cooling of the trailing edge part of the blade for which machining is difficult, while aiming at improvement of the thermal efficiency. The steam cooling structure for carrying out heat recovery-type ste

In the cooling system for the gas turbine blade, the apparatus of the present disclosure ensures cooling of the trailing edge part of the blade for which machining is difficult, while aiming at improvement of the thermal efficiency. The steam cooling structure for carrying out heat recovery-type steam cooling is employed to the leading edge part and the central part of the blade where machining is easy because of its large thickness, and the convection cooling end film cooling are employed for the trailing edge part of the blade where the thickness is small, using steam cooling and air cooling at the same time.

대표청구항 ▼

[ What is claimed is:] [1.] A moving gas turbine blade combination comprising:a blade part,a platform part,a root part,a steam cooling structure for performing thermal recovery-type steam cooling of a leading edge part and a central part of the blade part with steam; andan air cooling structure for

[ What is claimed is:] [1.] A moving gas turbine blade combination comprising:a blade part,a platform part,a root part,a steam cooling structure for performing thermal recovery-type steam cooling of a leading edge part and a central part of the blade part with steam; andan air cooling structure for introducing cooling air into the blade part for performing convection cooling and film cooling of a trailing edge part of the blade part,a steam supply port in an upstrean portion of said platform part in fluid communication with said steam cooling structure for supplying steam thereto, and a steam recovery port in a downstream portion of said platform part in fluid communication with said steam cooling structure for receiving steam therefrom;and a plurality of cooling passages in said platform part, each of said passages being fluidly connected at a first end thereof to said steam supply port, and each of said passages additionally being fluidly connected at a second end thereof to said steam recovery part, whereby said passages transfer steam through said platform part for cooling thereof.