Turbine blade with spar and shell cooling

Details Turbine blade with spar and shell cooling Turbine blade with spar and shell cooling

2011-03-15

2011-03-15

Yu, Justine (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

With heating, cooling or thermal insulation means

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

C415S115000, C416S226000

Reexamination Certificate

active

07905706

ABSTRACT:
A turbine blade of a spar and shell construction with multiple impingement cooling of the shell and cooling air channels formed in the platform to provide cooling for the platform and to provide purge air at the blade fillet to prevent ingestion of hot gas flow. The spar includes a plurality of radial extending cooling air supply channels that function as support members for the shell. The shell includes ribs extending between the walls that define cavities in which the spar cooling air supply channels fit to form the impingement cavities. The shell includes lower ledges that extend outward and abut the platforms extending from the spar to form spent air cooling channels to pass the impingement cooling air through the platform for cooling. A C-shaped clamp member secures the shell to the platform of the spar and form cooling air channels to discharge the spent cooling air into the fillet region of the blade.

REFERENCES:
patent: 4473336 (1984-09-01), Coney et al.
patent: 4563125 (1986-01-01), Boudigues et al.
patent: 5122033 (1992-06-01), Paul

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