Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1988-09-09
1989-07-11
Cohan, Alan
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
G05D 1600
Patent
active
048462101
ABSTRACT:
A valve assembly for controlling the fluid flow to the fuel spray nozzles in the combustion chamber of a gas turbine aeroengine. The valve assembly comprises a main flow valve whereby translation of the main valve beyond a predetermined limit initiates movement of a control valve by a mechanical interconnection means. Movement of the control valve serves to activate means for fluid communication between the main valve and the control valve, venting some of the pressurized fluid flow acting on main valve to the control valve and subsequently to the fluid outlet. The more sensitive operation and hence quicker response time for any given change in fluid pressure at the inlet to the valve assembly results in rapid closure of the valve assembly when the fluid flow is decreasing which discourages dribble occurring.
REFERENCES:
patent: 4493187 (1985-01-01), Hansen
patent: 4646774 (1987-03-01), Hansen
Cohan Alan
Rolls Royce plc
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