Actuating device and method for displacing the actuating device

摘要

An actuating device or displacing a control device, such as a valve, gate valve or other control mechanism, in particular for use in oil or gas production systems, comprises a motor-gear unit (21) and a thread drive (22) which is operable by said motor-gear unit (21) and which comprises at least a threaded spindle (23) and a screw nut (24). The threaded spindle (23) is displaceable in an essentially axial direction so as to displace the control device (2) between a use position (7) and a non-use position (8, 9, 19, 20). To ensure a safe displacement into the non-use position in a simple way and independently of the pressure conditions prevailing between conveying medium and inner medium, the threaded spindle (23) is substantially axially displaceable beyond the use position (7) into a second non-use position (9). The invention also refers to a corresponding method for displacing the actuating device.

主权项

1. An actuating device for displacing a control device for use in oil or gas production systems, comprising:
a motor-gear unit; a thread drive that is configured to be operated by the motor-gear unit and that comprises a threaded spindle and a screw nut, the threaded spindle configured to move in an axial direction to displace the control device between a first non-use position, a use position a second non-use position with the use position between the first and second non-use positions; wherein, in the use position, the control device is configured to enable fluid flow with respect thereto, and in the first and second non-use positions, the control device is configured to prevent fluid flow with respect thereto.