Woodward

Woodward Industrial Turbine Fuel Control Valves

    Liquid Fuel Control Valves for Gas Turbines

    Liquid-Valve.gif 

    ELMV (Electric Liquid Fuel Control Valve)

    Woodward’s Electric Liquid Metering Valve controls liquid fuel flow into various stages of an industrial gas turbine combustion system. The valve and all-electric actuator are integrated for precise fuel control under all operating conditions.

    The valve section of the ELMV consists of a flow controller and a throttling pressure regulator. The regulator maintains a constant differential pressure across the control plug and seat. Plugs are contoured to provide an equal percent flow characteristic.

    Woodward’s ELMV is supplied with an integral all-electric actuator that uses a brushless dc motor to drive the valve mechanism. A motor position resolver within the assembly acts as the primary motor commutation and actuator/valve position feedback device. This position signal is used by the external Woodward DVP (Digital Valve Positioner) as feedback to properly position the ELMV. A second resolver is attached to the valve stem and acts as a backup to the primary motor resolver. The actuator portion of the ELMV uses a soft stop spring that prevents the actuator from slamming into the minimum stop position in cases of fault detection.