| 摘要 |
The valve control system of the present invention includes a self-contained operator having a control means and power source adapted to energize a prime mover which in turn is coupled with a motion transmitting means which partially or completely opens or closes a fluid flow passage in a valve. In the preferred form, the operator includes a battery coupled to an electric motor acting through a mechanical driving linkage to open or close a valve. Operation of the motor is governed by the control means which may include pressure or flow responsive means and/or receiving means responsive to sonic or electrical signals transmitted from a remote location. When adapted for use in well valving, the operator is removably received within the inside pocket of a mandrel which houses a valve closure member.
|
