Power station upgrade introduces Rotork CVA
Fluid drives, which are also known as hydraulic drives, are used to hydraulically change the speed of the driven load when the driving motor is operating at a constant speed. There are two methods of hydraulically varying the speed – a fluid coupling or a hydraulic pump and motor. The CVA application is on the power station feed water pump. A CVQ- 1200 quarter-turn actuator has been installed to adjust the drive and provide varying output speeds from the single speed motor on the pump.
The CVA has replaced an obsolete electric actuator on the installation. The new actuator operates with a 24Vd.c. power source and 4-20mA control signal as standard, so Gothenburg Energy did not need to make any changes to the power and signal cabling when carrying out the upgrade.
Rotork Controls, Tel: +44 1225 733200