Control and supply unit
View Patent ↗A control and supply unit for an actuating device of a choke, a valve, a blow-up preventer or some other device applied in the field of oil and natural gas production includes at least an auxiliary power supply which is specially rechargeable, and a connecting means used for an exchange of data and/or for the purpose of voltage supply. To improve such a control and supply unit, such that the respective connecting means satisfy a relevant standard and has a compact structural design and is also easily accessible from outside, the control and supply unit includes, as a connecting means, a communication interface for connecting thereto a field bus and a voltage supply connection for connecting thereto a voltage supply line.
1. A control and supply unit for an actuating device of a choke, a valve, a blow-out preventer or another device applied in the field of oil and natural gas production, said unit comprising:
a unit housing releasably secured to the actuating device and comprising:
a plug connection device configured to exchange of data and to supply a received voltage;
a motor control unit inside the unit housing; and
an auxiliary power supply inside the unit housing;
a supply and communication assembly as a separate unit inside the unit housing, the separate supply and communication assembly comprising:
a plurality of terminals configured to be contacted via the plug connection device and configured to:
exchange data through a communication interface comprising a field bus; and
supply voltage to a voltage supply connection; and
a plurality of terminals internal to the unit housing and configured to:
exchange data between the communication interface and the auxiliary power supply; and
receive voltage from the voltage supply connection and supply said voltage to the auxiliary power supply.
2. The control and supply unit of claim 1 , wherein the unit is implemented separately of the actuating device.
3. The control and supply unit of claim 1 wherein the field bus is a CAN bus.
4. The control and supply unit of claim 1 , wherein the field bus and the voltage supply line couplings are implemented as separate connections.
5. The control and supply unit of claim 1 further comprising a second control and supply unit coupled to the actuating device for redundancy.
6. The control and supply unit of claim 1 wherein the supply and communication assembly comprises at least connections for supplying electric power to the motor control unit and/or at least one sensor unit of the actuating device.
7. The control and supply unit of claim 1 wherein the supply and communication assembly comprises bus connections for communication with and/or control of the motor control unit and/or at least one sensor unit of the actuating device.
8. The control and supply unit of claim 1 wherein the supply and communication assembly is provided with a ground terminal connected at least to the auxiliary power supply and/or the motor control unit.
9. The control and supply unit of claim 1 wherein an inert gas atmosphere is provided in the unit housing.
10. The control and supply unit of claim 1 wherein the plug connection device is accessible from outside, for the communication interface and the voltage supply connection.
11. The control and supply unit of claim 1 wherein the unit is connected to a submarine control module for communication and/or voltage supply.
12. The control and supply unit of claim 1 wherein the auxiliary power supply is rechargeable.