System for controlling heat expansion and thermal stress in a ga

Details System for controlling heat expansion and thermal stress in a ga System for controlling heat expansion and thermal stress in a ga

1982-10-14

1988-05-03

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

415116, F02C 712

Patent

active

047411538

ABSTRACT:
The invention concerns a system for controlling heat expansion and thermal stress in a gas turbine disk. The system includes perforated plates mounted close to and facing at least one surface of the disk, particularly opposite its rim and around its thick inner bored section. Conduits are provided for bleeding cold air and hot air from various stages of the compressor or from the turbine and for injecting cold air toward the rim of the disk and hot air toward its thick inner bored section through the corresponding perforated plates at the beginning of each acceleration, and, preferentially, during deceleration, for injecting hot air toward the said rim and cold air toward said inner bored section. The invention applies particularly to gas turbines used to propel aircraft.

REFERENCES:
patent: 2791091 (1957-05-01), Wheatley et al.
patent: 2973937 (1961-03-01), Wolf
patent: 3034298 (1962-05-01), White
patent: 3437313 (1969-04-01), Moore
patent: 3584458 (1971-06-01), Wetzler
patent: 3973396 (1976-08-01), Kronogard
patent: 4117669 (1978-10-01), Heller
patent: 4217755 (1980-08-01), Williams
Metzger et al., Heat Transfer between an Impinging Jet and a Rotating Disk, Journal of Heat Transfer, Nov. 1977.

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