Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Patent
1985-09-03
1987-02-03
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
251 3002, 25112905, F02C 926
Patent
active
046400931
ABSTRACT:
A metering valve (20) for supplying a turbine engine with a fuel at a substantially constant flow rate in response to operational conditions evaluated by a computer (28). A signal from the computer (28) in the form of voltage pulses is supplied to a solenoid (30). The solenoid (30) regulates the flow of fuel from a control chamber (54) to produce a fuel pressure P.sub.x therein. The fuel enters a supply chamber (46) and the fuel pressure P.sub.1 thereof acts on the effective area of a first diaphragm (42) to move face (70) on plunger (68) away from seat (38) in opposition to a closing force generated by the fluid pressure P.sub.x acting on a second diaphragm (48). A feedback valve (90) regulates the flow of fuel from supply chamber (46) to control chamber (54). By making the size of the first diaphragm (42) one half the size of the second diaphragm (48) when P.sub.x is equal to one half of the sum of fuel pressures P.sub.1 and P.sub.2, an equilibrium condition exists and fuel is supplied to the outlet conduit (40) at a substantially constant rate for distribution to a turbine engine.
REFERENCES:
patent: 3006144 (1961-10-01), Arnett et al.
patent: 3282556 (1966-11-01), Hancook
patent: 3292367 (1966-12-01), Bauger et al.
patent: 3688495 (1972-09-01), Fehler et al.
patent: 4015426 (1977-04-01), Hobo et al.
patent: 4099701 (1978-07-01), Berger
patent: 4454713 (1984-06-01), Meyer et al.
Allied Corporation
Casaregola Louis J.
Decker Ken C.
McCormick Jr. Leo H.
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