Gas turbine fuel system staging valves

Details Gas turbine fuel system staging valves Gas turbine fuel system staging valves

2006-03-07

2006-03-07

Kim, Ted (Department: 3746)

Power plants

Combustion products used as motive fluid

Combustion products generator

C060S739000, C060S746000

Reexamination Certificate

active

07007476

ABSTRACT:
In a fuel injector circuit for a gas turbine engine, a fuel staging valve assembly for distributing fuel into multiple zones in the combustor, the staging valve assembly, including a pilot valve operatively interconnected with at least one main valve, having high pressure and no leak capabilities, which are used to open, close and modulate the mass flow rate volume of fuel within the fuel injection circuit, with the position of the normally-closed valve being controlled by the pressure difference between the nozzle fuel supply circuit and a separately supplied signal circuit. As long as the desired pressure differential is maintained, fuel flow may be modulated without affecting the position of the valve, with the valve seats and valve seals being so configured as to prevent fuel leakage into the downstream nozzle circuit under these conditions.

REFERENCES:
patent: 3082785 (1963-03-01), Radway
patent: 3410304 (1968-11-01), Paul, Jr.
patent: 4172469 (1979-10-01), Boehringer
patent: 4570668 (1986-02-01), Burke et al.
patent: 4738282 (1988-04-01), Boehringer
patent: 4825649 (1989-05-01), Donnelly et al.
patent: 4967791 (1990-11-01), Sternberger
patent: 5076144 (1991-12-01), Karakama et al.
patent: 5448882 (1995-09-01), Dyer et al.
patent: 5558129 (1996-09-01), Mayeux
patent: 5848525 (1998-12-01), Spencer
patent: 6158208 (2000-12-01), Hommema
U.S. Appl. No. 60/462,797, filed Apr. 11, 2003, Robert Thane Mains, Fuel System Staging Valve With High Pressure.
Parker Hannifin Corporation Microseal Check Valve brochure, Part No. 372720.

Affiliated with

Also associated with

Rating

Gas turbine fuel system staging valves does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gas turbine fuel system staging valves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas turbine fuel system staging valves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3605934