A kind of continuous oil pipe injection head driving device
The utility model relates to coiled tubing injection head equipment field, is replaced a kind of continuous oil pipe injection head driving device of hydraulic motor specifically by servomotor.
In recent years, along with the kind of coiled tubing underground operation tool and the development of function, oil field operation increases the demand of continuous oil pipe device is also just corresponding, and as continuous oil pipe device core component---the quantity of injection head also increases thereupon.But the power drive portion of traditional coiled tubing injection head is adopt hydraulic motor as the output block of power entirely, along with continuous oil pipe device is to the development in automatically controlled direction, motor-driven continuous-tube equipment injection head also just arises at the historic moment, improving conventional hydraulic motors drives the power of coiled tubing injection head equipment existence little, volume is large, rotating speed, position control inaccuracy, the shortcomings such as the reaction time is long.
Utility model content
For above-mentioned deficiency, the utility model provides a kind of continuous oil pipe injection head driving device.
The utility model is achieved through the following technical solutions:
A kind of continuous oil pipe injection head driving device, it is characterized in that: be made up of servomotor, reductor and servo control system, described servomotor is connected with the sprocket wheel on injection head by reductor.By using servomotor to replace conventional hydraulic motors, the realization of intelligentized continuous oil pipe device is made to provide possibility.The operation of original employing hand-hydraulic extensive style, change into and send instruction to operate by controller, make performance accuracy, accuracy improves a lot, and after adopting controller, reduce the workload of operating personnel, and the maloperation of operating personnel.
Improve as one, the servo control system had for the utility model comprises: controller, servo-driver, driving cable, feedback cable, wherein, controller is connected with servo controller, servo-driver is connected with the port of servomotor by driving cable, feedback cable, forms a closed signal circuit.The benefit that such structure design is brought is, by servo-driver, the rotating speed of servomotor, displacement signal are fed back to controller in time, and controller can assign instruction by servo-driver to servomotor again in time.
As further improving, the port of the servo-driver had for the utility model is provided with electromagnetic contactor.Can not only connect by arranging electromagnetic contactor and cut off circuit, but also having the effect of low-voltage release guard, control capability is large, realizes frequent operation and far distance controlled.
The usefulness of this utility model is:
1, replace hydraulic motor as power with servomotor, decrease difficulty and the workload of hydraulic line making, make, to the manufacture craft of connecting line, to reduce requirement.
2, compared with traditional hydraulic motor, when equal-wattage, volume is little, and rotating speed, position control are more accurate.
3, by servo-driver, the rotating speed of servomotor, displacement signal can be fed back to controller, form the control loop of closed loop, solve speed, the stability of Bit andits control, accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of this device;
Fig. 2 is the A portion enlarged drawing in Fig. 1;
Fig. 3 is servo control system schematic diagram.
In figure, 1, controller, 2, electromagnetic contactor, 3, servo-driver, 4, driving cable, 5, servomotor, 6, feedback cable, 7, reductor, 8, injection head, 9, sprocket wheel.
Detailed description of the invention
A kind of continuous oil pipe injection head driving device, be made up of servomotor 5, reductor 7 and servo control system, wherein servomotor 5 is connected with the sprocket wheel 9 on injection head 8 by reductor 7.Described servo control system comprises: controller 1, servo-driver 3, driving cable 4, feedback cable 6, wherein, controller 1 is connected with servo controller 3, servo-driver 3 is connected with the port of servomotor 5 by driving cable 4, feedback cable 6, forms a closed signal circuit.Servo-driver 3 port is provided with electromagnetic contactor 2.
Operating principle and the sequence of movement of this continuous oil pipe injection head driving device are as follows:
1, go into the well in operation process at coiled tubing, assign to controller 1 by operating personnel's Operation control signal of going into the well, controller 1 produces and enters well pulse signal accordingly, control servo-driver 3, servo-driver 3 produces control signal again and transfers to servomotor 5 on injection head 8, servomotor 5 rotates forward and drives the sprocket wheel 9 of injection head 8, and sprocket wheel 9 drives well operations under oil pipe.
2, in the upper proposition well operations process of coiled tubing, to go out well operations control signal by personnel assigns to controller 1, controller 1 produces and goes out well pulse signal accordingly, control servo-driver 3, servo-driver 3 produces control signal again and transfers to servomotor 5 on injection head 8, servomotor 5 reverses and drives the sprocket wheel 9 of injection head 8, and sprocket wheel 9 drives oil pipe to go out well operations.