Turbine blade with trailing edge cooling

Details Turbine blade with trailing edge cooling Turbine blade with trailing edge cooling

2011-06-07

2011-10-25

Bryant, Kiesha (Department: 2891)

Fluid reaction surfaces (i.e., impellers)

With heating, cooling or thermal insulation means

Changing state mass within or fluid flow through working...

C416S001000, C416S09600A

Reexamination Certificate

active

08043060

ABSTRACT:
A turbine rotor blade with a trailing edge cooling circuit in which cooling air from an impingement cavity located adjacent to the trailing edge region is connected to a plurality of metering channels that open onto the pressure side wall of the trailing edge region of the airfoil to discharge the cooling air. A row of submerged slots that open onto the suction side wall of the airfoil are connected to the metering channels by a row of small holes that bleed off the cooling air in the metering channel in a progressive manner and discharge the air into the slot. The trailing edge cooling circuit allows for a thinner trailing edge airfoil, reduces the metal temperature and reduces the shear mixing between the cooling air and the mainstream hot gas flow.

REFERENCES:
patent: 4229140 (1980-10-01), Scott
patent: 6102658 (2000-08-01), Kvasnak et al.
patent: 6422819 (2002-07-01), Tsai et al.
patent: 2002/0172596 (2002-11-01), Kohli et al.
patent: 2005/0111979 (2005-05-01), Liang
patent: 2006/0073017 (2006-04-01), Manning et al.

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