Hybrid dual shaft gas turbine with accumulator

Details Hybrid dual shaft gas turbine with accumulator Hybrid dual shaft gas turbine with accumulator

1979-07-18

1981-06-02

Gill, James J.

Power plants

Combustion products used as motive fluid

Multiple fluid-operated motors

F02C 310

Patent

active

042703441

ABSTRACT:
An automotive gas turbine engine includes a gasifier spool having variable iris control means for regulating air flow to a compressor supplying a primary burner that is operative to produce motive fluid for driving the gasifier turbine and to supply a thermally insulated pressure accumulator located upstream of a secondary burner that exhausts to a variably controlled power turbine nozzle of a power turbine and wherein control means are operative upon engine start to open the variable iris to the gasifier spool and to direct fuel to the primary burner until the gasifier turbine produces a desired pressure in the accumulator and wherein means are provided to sense the pressure within the accumulator and operative following attainment of the desired pressure to close the iris and reduce primary burner fuel flow to a predetermined minimum to maintain gasifier spool speed at between 85% to 95% of full design speed thereof; the control means further including a manual control to the variable power turbine nozzle to direct motive fluid across the power turbine to meet a desired power output therefrom and wherein fuel flow to the secondary burner is maintained to hold a desired power turbine inlet temperature schedule.

REFERENCES:
patent: 3237404 (1966-03-01), Flanigan et al.
patent: 3257807 (1966-06-01), Hornschuch et al.
patent: 3308618 (1967-03-01), Jubb et al.
patent: 3373561 (1968-03-01), Jubb
patent: 3626003 (1971-12-01), Liddle et al.
patent: 3867812 (1975-02-01), Van Arsdel
patent: 3999373 (1976-12-01), Bell et al.
patent: 4173121 (1979-11-01), Yu

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