Method and apparatus for gas turbine over-speed protection

Details Method and apparatus for gas turbine over-speed protection Method and apparatus for gas turbine over-speed protection

2005-07-12

2005-07-12

Koczo, Jr., Michael (Department: 3746)

Power plants

Combustion products used as motive fluid

Process

C060S039281

Reexamination Certificate

active

06915639

ABSTRACT:
A fuel system interface for a gas turbine engine prevents a rotor from over-speeding and receives either an electrically-originated or a mechanically-originated over-speed signal. In the exemplary embodiment, the fuel system interface is coupled to an gas turbine engine fuel shut off valve and to a fuel metering valve to shut off engine fuel after receiving an over-speed condition. As a result, because the fuel system interface acts on both the shut off valve and the fuel metering valve, rotor over-speed protection is facilitated with parallel redundant fuel cutoff devices.

REFERENCES:
patent: 3946551 (1976-03-01), Linebrink et al.
patent: 4134257 (1979-01-01), Riple
patent: 4275558 (1981-06-01), Hatch et al.
patent: 4327294 (1982-04-01), Smith et al.
patent: 5301500 (1994-04-01), Hines
patent: 5394689 (1995-03-01), D'Onofrio
patent: 5486997 (1996-01-01), Reismiller et al.

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