Air delivery system for regulating thermal growth

Details Air delivery system for regulating thermal growth Air delivery system for regulating thermal growth

1978-07-17

1980-10-28

Powell, Jr., Everette A.

Rotary kinetic fluid motors or pumps

Including thermal expansion joint

Radially sliding

415 51, 415175, F01D 1108

Patent

active

042304393

ABSTRACT:
A timing valve is responsive to certain hydraulic rotor speed input signals so as to schedule increased temperatures of air to a turbine shroud support in accordance with the thermal time constants of the rotor. Clearance between the rotor and the shroud is thereby minimized during both transient and steady-state operating conditions. Temperatures are incrementally increased by selectively combining air from the compressor fifth and ninth stage bleed manifolds. Under certain operating conditions, the timing valve is pre-empted and air is provided at a predetermined temperature level as a function of rotor speed only.

REFERENCES:
patent: 3391904 (1978-07-01), Albert et al.
patent: 3575528 (1971-04-01), Beam, Jr. et al.
patent: 3583824 (1971-06-01), Smuland
patent: 3584458 (1971-06-01), Wetzler
patent: 3736069 (1973-05-01), Beam, Jr. et al.
patent: 3966354 (1976-06-01), Patterson
patent: 3975901 (1976-08-01), Hallinger et al.
patent: 4069662 (1978-01-01), Redinger et al.
patent: 4102595 (1978-07-01), Wibbelsman
patent: 4117669 (1978-10-01), Heller

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