Fuel flow control valve

Details Fuel flow control valve Fuel flow control valve

1986-10-20

1988-10-11

Casaregola, Louis J.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

60 39141, 60 39281, F16K 3112

Patent

active

047765607

ABSTRACT:
A fuel flow control valve is adapted to control the flow of fuel in a spill line to control the amount of fuel usable in a two speed gas turbine. The valve includes fluid pressure operated valve means controlled by two variable volume fluid pressure chambers to provide appropriate fuel flow for `run` and `idle` conditions, and positioning means to automatically position the fluid pressure operated valve means when the control valve is at rest to provide a flow of fuel appropriate for `start-up` of the gas turbine that is greater than the flow required in the `idle` condition but less than that required in the `run` condition. Operating fluid pressures connected to the chambers may comprise either gaseous fluid pressures tapped from a stage of the compressor of the gas turbine or a combination of said gaseous pressure source and a liquid fluid pressure source preferably comprising a fuel pressure supply tapped from the fuel supply line to the gas turbine.

REFERENCES:
patent: 1747598 (1930-02-01), Popp
patent: 2665711 (1954-01-01), Parks
patent: 2697599 (1954-12-01), Vandal
patent: 3155365 (1964-11-01), Hartung et al.
patent: 3451423 (1969-06-01), Priese
patent: 3517688 (1970-06-01), Scholle
patent: 3580435 (1971-05-01), Bertilsson
patent: 3902696 (1975-09-01), Ito et al.

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