RKP Fuel Metering Systems
Moog's fuel efficient fuel metering system uses tandem variable displacement RKP pumps with up-rated compensator and revised spring configuration to improve frequency response. Liquid fuel Moog Direct Drive Valves (DDVs) are mounted to the pump to independently control flow to the main burner and the pilot burner and to ensure fuel is supplied on demand rather than by spilling excess flow (as in the traditional system). Consequently the new Moog system typically uses a 22 kW AC motor whereas the traditional system often requires a 30 kW motor, already demonstrating reduced in service running costs (energy saving).
This technology has already been applied to turbines of power levels of up to 15 MW corresponding to fuel flow rates of up to 100lpm (26.4 gpm) at 100 bar (1450 psi). Typical fuel types that have been accommodated include diesel and diesel derivatives. The system is ATEX certified for use in Group 2, Category 3 hazardous areas.
Article - RKP Fuel Metering Systems for Gas Turbines
Moog has been working on fuel metering technology to improve performance for over 20 years. Before we examine Moog’s latest development, let’s take a look at how this latest solution has evolved.