FIELD: soil or rock drilling.
SUBSTANCE: invention relates to a device for blow-out preventers for underwater wells. Disclosed is a device for actuating a die in a device for controlling pressure in a well, comprising: an actuator rod connected to the die, wherein the actuating actuator rod is configured to move inside the housing to extend the die into the through hole in the housing; a drive screw, rotationally connected to the actuator rod, wherein the drive screw is oriented across the actuator rod; at least one rotary drive coupled with drive screw; and piston located at actuator rod lengthwise end opposite to die, wherein piston is exposed to fluid medium pressure source from piston side opposite to actuator rod.
EFFECT: wider range of equipment for equipping well head underwater wells.
17 cl, 3 dwg
