Jet air cooled turbine shroud for improved swirl cooling and mix

Details Jet air cooled turbine shroud for improved swirl cooling and mix Jet air cooled turbine shroud for improved swirl cooling and mix

1988-12-12

1990-05-22

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

60758, 60760, F23R 316, F23R 354

Patent

active

049266306

ABSTRACT:
Warping of the rear turbine shroud 54 and the resulting cracking of turbine nozzle vanes 24 may be eliminated in a radial inflow turbine having an annular combustor 30 with a radially outer wall 32 opening on a compressed air plenum 48 by locating a plurality of tubes 70 on the radially outer wall 32 in fluid communication with the plenum 48 and extending the tubes 70 inwardly so that the radially inner ends 76 are adjacent the radially outer edge 56 of the turbine shroud 54. The tubes 70 thus direct sweeping streams of cooling air along the rear turbine shroud 54 to cool the same and prevent warpage.

REFERENCES:
patent: 3608310 (1971-09-01), Vaught
patent: 3613360 (1971-10-01), Howes
patent: 3623318 (1971-11-01), Shank
patent: 4314443 (1982-02-01), Barbeau
patent: 4339925 (1982-07-01), Eggmann et al.
patent: 4794754 (1989-01-01), Shekleton
patent: 4800717 (1989-01-01), Rodgers

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