POWER ACTUATOR DEVICE AND METHOD FOR SUBMERGED USE AT PETROLEUM EXPLOITATION

摘要

Power actuator (2) device and method for submerged use at petroleum exploitation, where an electric motor (50) drives a displaceable actuating element (16) via a transmission element (80), and where the power actuator (2) comprises at least two parallel and cooperative screw-nut-connections (20) connected to the actuating element (16), and where the transmission elements (80) comprise a driving wheel (40) which synchronically drives a screw (22) or a nut (18) in each of the at least two screw-nut-connections (20).

主权项

1. Power actuator device for activation of a cutting knife or similar device in a submerged system such as a blow-out preventer as used at petroleum exploitation, where the power actuator has an electric motor that drives a displaceable actuating element via a transmission element, wherein the power actuator comprises at least two parallel and cooperative screw-nut-connections connected to the actuating element, and where the transmission elements comprise a driving wheel which synchronically drives a screw or a nut in each of the at least two screw-nut-connections and where a planetary gear that is positioned inside the drive motor, is connected by a drive shaft and a motor mandrel.