CN202103624U - Oil field servo control system - Google Patents
Oil field servo control system Download PDFInfo
- Publication number
- CN202103624U CN202103624U CN2011201601943U CN201120160194U CN202103624U CN 202103624 U CN202103624 U CN 202103624U CN 2011201601943 U CN2011201601943 U CN 2011201601943U CN 201120160194 U CN201120160194 U CN 201120160194U CN 202103624 U CN202103624 U CN 202103624U
- Authority
- CN
- China
- Prior art keywords
- control system
- servomotor
- oil field
- servo
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to an oil field servo control system which can solve the problem of inaccuracy positioning on control of an oil pumping rod in the prior art. The key points of the technical scheme are that the oil field servo control system comprises a rack, the oil pumping rod and an oil pumping rod synchronous rotating wheel; a servo motor is fixed on the rack; the oil pumping rod is provided with a fixed pulley and a counterweight block; the oil pumping rod is driven by the servo motor; the oil field servo control system further comprises a servo motor controller and a servo motor driving component; the servo motor controller is electrically connected with the input end of the servo motor driving component; the output end of the servo motor driving component is electrically connected with the servo motor; a rotating shaft of the servo motor is connected with a rotating transformer; the rotating transformer is electrically connected with a rotating transformer digital converter; and the output end of the rotating transformer digital converter is electrically connected with the servo motor controller. The oil pumping rod in the oil field servo control system can be precisely positioned through the oil field servo control system.
Description
Technical field
The utility model relates to a kind of oil exploitation machinery, particularly a kind ofly can carry out pinpoint oil field servo-control system to sucker rod.
Background technology
The oil field servo-control system of China's use at present generally has following several oil pumper type, one type of headkerchief machine, and it is made up of parts such as PLC, contactors.There is shortcoming in such control: not energy-conservation, power consumption is big.Another kind of brush DC frequency conversion oil pumping control, it is made up of parts such as frequency converter, contactors.Also there is shortcoming in such switch board: only by a direction operation, power consumption is big, has superiority with respect to the headkerchief machine for motor.Also having one type is tower-type pumping unit, and it is made up of parts such as frequency converter, contactor, synchronous machines, and its advantage is: it has counterweight, and the oil well draft is equated with counterweight, and electric energy is further reduced, and can save electric weight 50%.But more than all oil pumpers all exist on to the control of sucker rod the location not accurate, the problem that breaks down easily during the work of control sucker rod.
Chinese patent notification number CN 201184173Y; January 21 2009 day for announcing; Disclose a kind of oil pumper, comprised main frame, at least one cover sucker rod and sucker rod fixed mount thereof, counterweight frame or other cover sucker rod and sucker rod fixed mount, pylon and the pulley assembly of balance to pouring weight is housed; Described main frame is detachable to be connected on the pylon; Main frame is through a detachable cover sucker rod fixed mount and the sucker rod that be connected with of pulley assembly one end; Counterweight frame or other cover sucker rod and the sucker rod fixed mount thereof of balance to pouring weight is equipped with in the detachable connection of the other end; Described main motor adopts permagnetic synchronous motor, and encoder is set on electric machine rotational axis.Though this technical scheme can realize simple sucker rod positioning function, adopts the encoder of detection position, in this adverse circumstances in oil field, damage than being easier to, cause oil field servo-control system integral body to work easily.
Summary of the invention
The purpose of the utility model is to solve in the above-mentioned prior art not accurate to all there being the location in the control of sucker rod; The problem that breaks down easily during the work of control sucker rod; Providing a kind of can precisely locate sucker rod, and fault is few, the oil field servo-control system of long service life.
The utility model solves the technical scheme that its technical problem adopted: a kind of oil field servo-control system; Comprise frame, sucker rod, the synchronous moving runner of sucker rod; Be fixed with servomotor on the described frame; Described sucker rod is equipped with fixed pulley and balancing weight; Described sucker rod is by driven by servomotor, and described oil field servo-control system also comprises servomotor controller and driven by servomotor assembly, and described servomotor controller is electrically connected with the input of said driven by servomotor assembly; The output of said driven by servomotor assembly is electrically connected with described servomotor; Rotating shaft place of described servomotor is connected with resolver, and described resolver is electrically connected with the resolver digitalizer, and the output of described resolver digitalizer is electrically connected with described servomotor controller.Servomotor is a kind of small-sized alternating current motor of the usefulness that takes measurement of an angle, and is used for measuring the rotating shaft angular travel and the angular speed of rotating object, is made up of stator and rotor; Wherein stator winding is as the former limit of transformer; Accept exciting voltage, the rotor winding obtains induced voltage as the secondary of transformer through electromagnetic coupled; The former limit of resolver, secondary winding are then with the change of the angular displacement generation relative position of rotor; Thereby the size of its output voltage changes with rotor angular displacement, and that the voltage magnitude of output winding becomes with angle of rotor is sinusoidal, cosine function concerns that the calculating that concerns through offset of sinusoidal, cosine function can draw parameters such as rotating speed of motor, running time; Then draw the real time position and the real-time speed of sucker rod, reach the purpose of accurate positioning control; Simultaneously, resolver, mechanical strength is bigger, is adapted at the occasion that this abominable rotary encoder in oil field can't operate as normal.
As preferably, the top of corresponding balancing weight is provided with upper limit position switch on the described frame, and the below of corresponding balancing weight is provided with lower position switch, and described upper limit position switch and lower position switch all are electrically connected with described servomotor controller.Setting through upper limit position switch and lower position switch; Prevented the transient motion of sucker rod on the one hand; On the other hand; Can calculate servomotor through upper limit position switch and lower position switch and whether move and put in place, combine, can guarantee the accurate control of sucker rod position better with the detection of resolver.
As preferably; Described oil field servo-control system also includes manual operation box and wireless controller; Described manual operation box is electrically connected with described servomotor controller; Described servomotor controller is provided with wireless receiving module, and described wireless receiving module and described wireless controller are complementary.Be provided with like this, guaranteed that oil pumper can hard to bear Long-distance Control and two kinds of controls of field control in the servo-control system of oil field.
As preferably, the synchronous moving runner of described sucker rod is provided with middle bit switch, described in bit switch be electrically connected with described servomotor controller.Bit switch mainly is to be used for checking the synchronous moving runner of sucker rod position in being provided with, and the synchronous moving runner of sucker rod rotates a circle, and the meta switch closure once promptly detects a signal, and each run is checked the sucker rod position to here the time.
As preferably, described servomotor controller is a dsp processor.Dsp processor is a device of handling bulk information with digital signal; Can receive analog signal; Convert digital signal into; And then digital signal made amendment, deletes, strengthens, and in the other system chip, return analogue data or actual environment form to the numerical data decipher, the real-time working data are higher.
As preferably, described driven by servomotor assembly is a frequency converter.The employing frequency control has the following advantages: 1. frequency converter can be realized stepless stepless speed control; 2. vector frequency converter can be simulated the speed adjusting performance approximate with DC motor, and 3. frequency converter can be realized the soft start and soft stop of motor, and detent torque is big; 4. its power factor of frequency converter is close to 1; Reduce circuit, transformer loss, but 5. owing to the soft start motor, the transformer capacity of the comparable direct startup of transformer capacity is little.
The beneficial effect of the utility model is: the utility model can precisely be located sucker rod, and fault is few, and long service life, operating efficiency are also higher.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is a kind of circuit structure diagram of the utility model.
Among the figure: 1, servomotor, 2, frame, 3, fixed pulley, 4, sucker rod; 5, upper limit position switch, 6, lower position switch, 7, balancing weight, 12, frequency converter; 13, dsp processor, 14, operating case, 15, middle bit switch, 16, resolver; 17, resolver digitalizer, 18, the input power supply, 19, brake resistance.
Embodiment
Below through specific embodiment, and combine accompanying drawing, the technical scheme of the utility model is further specified.
Embodiment:
A kind of oil field servo-control system (referring to accompanying drawing 1) comprises frame 2, sucker rod 4, the synchronous moving runner of sucker rod, is fixed with servomotor 1 on the frame 2; Sucker rod 4 is equipped with fixed pulley 3 and balancing weight 7, and sucker rod 4 and balancing weight 7 are positioned at the both sides of fixed pulley 3, and sucker rod 4 is driven by servomotor 1 and moves up and down; Simultaneously, balancing weight 7 corresponding sucker rods 4 move up and down, and the movement locus of corresponding balancing weight 7 is provided with upper limit position switch 5 and lower position switch 6 on frame 2; Upper limit position switch 5 is positioned at the top of balancing weight 7; Lower position switch 6 is positioned at the below of balancing weight 7, and servomotor 1 drives (referring to accompanying drawing 2) by frequency converter 12, and the power input of frequency converter 12 is electrically connected with input power supply 18; There is brake resistance 19 in frequency converter 12 external worlds; The signal input end of frequency converter 12 is electrically connected with dsp processor 13, and dsp processor 13 also is electrically connected with operating case 14, upper limit position switch 5, lower position switch 6 and middle bit switch 15, and middle bit switch 15 is arranged on the synchronous moving runner of sucker rod; The synchronous moving runner of sucker rod is connected with the rotating shaft of servomotor 1; Be provided with wireless receiving module in the dsp processor 13, the wireless receiving module coupling has wireless controller, is connected with resolver 16 in the rotating shaft of servomotor 1; The output of resolver 16 is electrically connected with the input of resolver digitalizer 17, and the output of resolver digitalizer 17 is electrically connected with the input of dsp processor 13.
When present embodiment uses, output control signals to dsp processor by operating case or wireless controller, output signal of processor, frequency converter drives the servomotor operation, upwards operation of balancing weight when up, balancing weight moves downwards when descending.Balancing weight is down operation earlier, runs into to output signal to dsp processor control balancing weight behind the lower position switch and up move, and balancing weight stops action after running into upper limit position switch, and whole travel paths record also inputs to dsp processor.The synchronous moving runner of sucker rod rotates a circle, and the meta switch closure once promptly detects a signal, and each run is checked the sucker rod position to here the time, and the position of contrast upper limit position switch and lower position switch is carried out the position to sucker rod and proofreaded.In the servomotor operation; Servomotor rotating shaft driven rotary transformer; The former limit of resolver, secondary winding be then with the change of the angular displacement generation relative position of rotor, thereby the size of its output voltage changes with rotor angular displacement, and the voltage magnitude of output winding becomes sine, cosine function to concern with angle of rotor; The resolver digitalizer receives the two paths of signals of resolver output; Calculating through offset of sinusoidal, cosine function relation can draw parameters such as rotating speed of motor, running time, draws the real time position and the real-time speed of sucker rod then, exports digital quantity to dsp processor then; Dsp processor outputs control signals to frequency converter according to the real time position and the real-time speed of the instruction of user input and the sucker rod that calculates, carries out the purpose that VFC reaches accurate positioning control.
Above-described embodiment is a kind of preferable scheme of the utility model, is not the utility model is done any pro forma restriction, under the prerequisite that does not exceed the technical scheme that claim puts down in writing, also has other variant and remodeling.
Claims (6)
1. oil field servo-control system; Comprise frame, sucker rod, the synchronous moving runner of sucker rod; Be fixed with servomotor on the described frame, described sucker rod is equipped with fixed pulley and balancing weight, and described sucker rod is by driven by servomotor; It is characterized in that: described oil field servo-control system also comprises servomotor controller and driven by servomotor assembly; Described servomotor controller is electrically connected with the input of said driven by servomotor assembly, and the output of said driven by servomotor assembly is electrically connected with described servomotor, and rotating shaft place of described servomotor is connected with resolver; Described resolver is electrically connected with the resolver digitalizer, and the output of described resolver digitalizer is electrically connected with described servomotor controller.
2. oil field according to claim 1 servo-control system; It is characterized in that: the top of corresponding balancing weight is provided with upper limit position switch on the described frame; The below of corresponding balancing weight is provided with lower position switch, and described upper limit position switch and lower position switch all are electrically connected with described servomotor controller.
3. oil field according to claim 1 and 2 servo-control system; It is characterized in that: described oil field servo-control system also includes manual operation box and wireless controller; Described manual operation box is electrically connected with described servomotor controller; Described servomotor controller is provided with wireless receiving module, and described wireless receiving module and described wireless controller are complementary.
4. oil field according to claim 1 servo-control system is characterized in that: the synchronous moving runner of described sucker rod is provided with middle bit switch, and described middle bit switch is electrically connected with described servomotor controller.
5. oil field according to claim 1 and 2 servo-control system is characterized in that: described servomotor controller is a dsp processor.
6. oil field according to claim 1 and 2 servo-control system is characterized in that: described driven by servomotor assembly is a frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201601943U CN202103624U (en) | 2011-05-19 | 2011-05-19 | Oil field servo control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201601943U CN202103624U (en) | 2011-05-19 | 2011-05-19 | Oil field servo control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202103624U true CN202103624U (en) | 2012-01-04 |
Family
ID=45389621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201601943U Expired - Fee Related CN202103624U (en) | 2011-05-19 | 2011-05-19 | Oil field servo control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202103624U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778895A (en) * | 2012-07-02 | 2012-11-14 | 中国工程物理研究院总体工程研究所 | System and method for accurate positioning control under overweight environment |
| CN106323149A (en) * | 2016-08-31 | 2017-01-11 | 山东天工石油装备有限公司 | Displacement collection and calibration method for rack-type oil pumping unit |
| CN111224596A (en) * | 2020-01-09 | 2020-06-02 | 黑龙江瑞鑫永磁电机制造有限公司 | Permanent magnet synchronous motor dragging device improved by induction motor |
| CN113979250A (en) * | 2021-10-29 | 2022-01-28 | 杭州赛翔科技有限公司 | Hydraulic elevator starting and stopping speed regulation control method based on oil temperature |
-
2011
- 2011-05-19 CN CN2011201601943U patent/CN202103624U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778895A (en) * | 2012-07-02 | 2012-11-14 | 中国工程物理研究院总体工程研究所 | System and method for accurate positioning control under overweight environment |
| CN102778895B (en) * | 2012-07-02 | 2014-07-02 | 中国工程物理研究院总体工程研究所 | Method for accurate positioning control system under overweight environment |
| CN106323149A (en) * | 2016-08-31 | 2017-01-11 | 山东天工石油装备有限公司 | Displacement collection and calibration method for rack-type oil pumping unit |
| CN106323149B (en) * | 2016-08-31 | 2018-12-07 | 山东天工石油装备有限公司 | A kind of rack type pumping machine displacement acquisition calibration method |
| CN111224596A (en) * | 2020-01-09 | 2020-06-02 | 黑龙江瑞鑫永磁电机制造有限公司 | Permanent magnet synchronous motor dragging device improved by induction motor |
| CN113979250A (en) * | 2021-10-29 | 2022-01-28 | 杭州赛翔科技有限公司 | Hydraulic elevator starting and stopping speed regulation control method based on oil temperature |
| CN113979250B (en) * | 2021-10-29 | 2023-03-24 | 杭州赛翔科技有限公司 | Hydraulic elevator starting and stopping speed regulation control method based on oil temperature |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202103624U (en) | Oil field servo control system | |
| CN101734379B (en) | FPGA-based highly-integrated high-precision control system for micro flywheel | |
| CN102079250A (en) | Brushless double-fed motor driving system of electric vehicle and control method thereof | |
| CN204013310U (en) | Brushless dual-feed motor direct Torque Control | |
| CN104201965B (en) | Rotor suspension control method for stator permanent magnet type bearingless synchronous motor | |
| CN201754551U (en) | Brushless DC motor and control system thereof | |
| CN101876239A (en) | Pumping unit system and power saving control method thereof | |
| CN102570959A (en) | Control system and control method for low-voltage high-current permanent magnet synchronous motors | |
| CN202267851U (en) | Stage suspension rod motor based on PLC control | |
| CN103066914B (en) | Direct power control system of high power factor induction motor | |
| CN203131180U (en) | Control system for electric actuating mechanism of valve | |
| CN201896024U (en) | Permanent magnetic synchronous door machine controller | |
| CN201915750U (en) | Integral gate operator direct drive and vector control device | |
| CN201467069U (en) | Permanent-magnet synchronous linear motor driver | |
| CN204772564U (en) | Imitative people's manipulator electric control system | |
| CN203761200U (en) | Permanent magnet synchronous motor assembly used for diving of space mechanical arm joint | |
| CN103516268A (en) | Direct-current motor control system based on DSP | |
| CN202550953U (en) | Automotive PMSM (Permanent Magnet Synchronous Motor) control system based on GMR (Giant Magneto Resistive) sensor | |
| CN202550950U (en) | Intelligent power module (IPM)-based frequency control permanent magnet synchronous motor (PMSM) | |
| CN201925092U (en) | Wind turbine pitch control system | |
| CN201830192U (en) | Mine hoist control system driven by permanent magnet motor | |
| CN206640529U (en) | A kind of switched reluctance motor for electric automobile control device | |
| CN204538899U (en) | A kind of bi-motor high efficiency smart FOC drive system | |
| CN205446399U (en) | Low -cost self -rotation feels electromagnetic bearing based on PWM signal phase shift control | |
| CN202372183U (en) | Position sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20180519 |