CN103823403A - Pumping unit control system - Google Patents
Pumping unit control system Download PDFInfo
- Publication number
- CN103823403A CN103823403A CN201410055424.8A CN201410055424A CN103823403A CN 103823403 A CN103823403 A CN 103823403A CN 201410055424 A CN201410055424 A CN 201410055424A CN 103823403 A CN103823403 A CN 103823403A
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- China
- Prior art keywords
- control system
- plc control
- pumping unit
- oil
- ball
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Abstract
The invention discloses a pumping unit control system which comprises a ball screw arranged in a pumping unit and an oil rod connected to the lower end of the ball screw. Two limiting switches are arranged at an upper dead position and a lower dead point position of the stroke of the ball screw, the two limiting switches are connected to a PLC control system, a switch reluctance motor arranged on the pumping unit is further included, the PLC control system is connected with the switch reluctance motor and can control the switch reluctance machine, a torque sensor capable of detecting torque is arranged in the switch reluctance motor, the torque sensor is connected to the PLC control system, and the PLC control system is connected to a display screen through a data output module. Through the structure, the function of saving energy is achieved, meanwhile, the PLC control system outputs control signals accurately, the failure rate is low, and the operating reliability of the system is greatly improved.
Description
Technical field
The present invention relates to a kind of control system that can control oil pumper operation, specifically a kind of control system for oil-pumping unit.
Background technology
As everyone knows, oil pumper needs control system to control the leading screw specific works state in oil pumper in the course of the work conventionally, existing control system for oil-pumping unit generally only judges by approach switch whether oil pumper leading screw moves and puts in place, although existing this structure can accurately judge the movement position of oil pumper leading screw, but it only relies on position transducer, output power of motor can not be rationally controlled in judgement in course of action, therefore can cause the waste of energy consumption, only respond to its duty with position transducer simultaneously, system reliability of operation is also poor.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of control system for oil-pumping unit that can rationally control output power of motor and improve system reliability of operation.
In order to solve the problems of the technologies described above, control system for oil-pumping unit of the present invention, comprise ball-screw and the beam hanger that is connected to ball-screw lower end in oil pumper, two dead-centre positions up and down of ball-screw stroke are provided with two limit switches, two limit switches are connected in PLC control system, also comprise the switched reluctance machines being arranged on oil pumper, PLC control system is connected with switched reluctance machines and can controls switched reluctance machines, in switched reluctance machines, be provided with the torque sensor that can detect torque, torque sensor is connected in PLC control system, PLC control system is connected on display screen by a data outputting module.
Described PLC control system is connected on wireless transport module by a data outputting module.
On described oil pumper, be also provided with the accumulator of the hydraulic oil of discharging in the hydraulic cylinder that can hold oil pumper.
Adopt after above-mentioned structure, due to the limit switch arranging, the PLC control system that is arranged on the torque sensor in switched reluctance machines and is connected with limit switch and torque sensor, can can detect ball-screw run location and commutate by PLC control system at the limit switch of upper bottom dead centre thus, torque sensor can detect torque real-time Transmission to PLC control system simultaneously, then PLC control system is determined switched reluctance machines output power size according to torque, thereby realize energy-conservation effect, PLC control system control signal output simultaneously accurately, failure rate is low, improve greatly system reliability of operation.
Accompanying drawing explanation
Fig. 1 is the theory diagram of control system for oil-pumping unit of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, control system for oil-pumping unit of the present invention is described in further detail.
As shown in the figure, control system for oil-pumping unit of the present invention, comprise ball-screw and the beam hanger that is connected to ball-screw lower end in oil pumper, two dead-centre positions up and down of ball-screw stroke are provided with two limit switches, two limit switches are connected in PLC control system, the specific works position of ball-screw operation can be detected by limit switch, and by PLC control system control rotating, also comprise the switched reluctance machines being arranged on oil pumper, PLC control system is connected with switched reluctance machines and can controls switched reluctance machines, in switched reluctance machines, be provided with the torque sensor that can detect torque, torque sensor is connected in PLC control system, thus can be when limit switch can detect the specific works position of ball-screw operation, detect the size of moment of torsion the output of gauge tap reluctance motor power by torque sensor, PLC control system is connected on display screen by a data outputting module, on oil pumper, be also provided with the accumulator of the hydraulic oil of discharging in the hydraulic cylinder that can hold oil pumper.
Further, PLC control system can also be connected on wireless transport module by data outputting module, both can realize by on-the-spot display screen and showing thus, also can carry out remote data acquisition by wireless transmission.
When use, the specific works position of ball-screw operation can be detected by limit switch, and by the rotating of PLC control system gauge tap reluctance motor, that is to say that movement travel limits by upper bottom dead centre limit switch, in the time that ball-screw motion touches limit switch, signal is delivered to PLC control system, switched reluctance machines is turned to and adjusted, thereby change ball-screw traffic direction, make ball-screw under PLC control system, drive and to move back and forth by switched reluctance machines; Torque sensor detects torque and carrys out gauge tap reluctance motor output power size by detection signal being transferred to PLC control system, PLC control system principle is as follows: according to pre-set program, PLC control system changes rotating speed, the torque of motor by changing the input current of switched reluctance machines; Motor internal is equipped with angular transducer, imports detection signal into PLC control system, and motor action is judged, and is normal, stall or braking, thereby input current is carried out to precise fine-adjustment.
It should be noted that, ball-screw lower end connects beam hanger, beam hanger is through oil cylinder, in oil cylinder, there is piston, in the time that ball-screw moves down, torque can rely on deadweight completely, motor is not wanted output power, in the process that ball-screw moves down, in-oil cylinder hydraulic oil is discharged in an accumulator, now after torque sensor detection signal and by the not required power output of PLC control system gauge tap reluctance motor, in the time that ball-screw moves up, need gauge tap reluctance motor power stage, meanwhile accumulator releases energy, thus except the lifting of switched reluctance machines, also having certain pressure to promote ball-screw moves up, further play the effect of saving power, as can be seen here, in the time detecting that moment of torsion is excessive, load is large, increasing power, otherwise, reduce power, according to load variations size torque sensor detection torque and by detection signal being transferred to PLC control system gauge tap reluctance motor output power, and control in real time output power size, realize thus the control of switched reluctance machines output power, carry out reliably automatic control and met the requirement of electrical machine energy-saving, reach energy-conservation object.
Claims (3)
1. a control system for oil-pumping unit, it is characterized in that: comprise ball-screw and the beam hanger that is connected to ball-screw lower end in oil pumper, two dead-centre positions up and down of described ball-screw stroke are provided with two limit switches, described two limit switches are connected in PLC control system, also comprise the switched reluctance machines being arranged on oil pumper, described PLC control system is connected with switched reluctance machines and can controls switched reluctance machines, in described switched reluctance machines, be provided with the torque sensor that can detect torque, torque sensor is connected in PLC control system, described PLC control system is connected on display screen by a data outputting module.
2. according to control system for oil-pumping unit claimed in claim 1, it is characterized in that: described PLC control system is connected on wireless transport module by a data outputting module.
3. according to control system for oil-pumping unit claimed in claim 1, it is characterized in that: the accumulator that is also provided with the hydraulic oil of discharging in the hydraulic cylinder that can hold oil pumper on described oil pumper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410055424.8A CN103823403A (en) | 2014-02-19 | 2014-02-19 | Pumping unit control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410055424.8A CN103823403A (en) | 2014-02-19 | 2014-02-19 | Pumping unit control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103823403A true CN103823403A (en) | 2014-05-28 |
Family
ID=50758518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410055424.8A Pending CN103823403A (en) | 2014-02-19 | 2014-02-19 | Pumping unit control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103823403A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240464A (en) * | 2015-10-08 | 2016-01-13 | 杨靖康 | Reversing speed reducer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720707Y (en) * | 2004-07-26 | 2005-08-24 | 北京中冶立达伺服技术研究所 | Intelligent servo push-rod |
| CN2911175Y (en) * | 2005-10-08 | 2007-06-13 | 高智 | Intelligent long stroke pumping unit |
| CN201047344Y (en) * | 2007-02-05 | 2008-04-16 | 北京华能通达能源科技有限公司 | Straight-line balance type long stroke energy-saving oil pumping machine |
| US20120091931A1 (en) * | 2009-03-16 | 2012-04-19 | Unico, Inc. | Induction motor torque control in a pumping system |
| CN203720600U (en) * | 2014-02-19 | 2014-07-16 | 镇江索达联轴器有限公司 | Oil pumping machine control system |
-
2014
- 2014-02-19 CN CN201410055424.8A patent/CN103823403A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720707Y (en) * | 2004-07-26 | 2005-08-24 | 北京中冶立达伺服技术研究所 | Intelligent servo push-rod |
| CN2911175Y (en) * | 2005-10-08 | 2007-06-13 | 高智 | Intelligent long stroke pumping unit |
| CN201047344Y (en) * | 2007-02-05 | 2008-04-16 | 北京华能通达能源科技有限公司 | Straight-line balance type long stroke energy-saving oil pumping machine |
| US20120091931A1 (en) * | 2009-03-16 | 2012-04-19 | Unico, Inc. | Induction motor torque control in a pumping system |
| CN203720600U (en) * | 2014-02-19 | 2014-07-16 | 镇江索达联轴器有限公司 | Oil pumping machine control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240464A (en) * | 2015-10-08 | 2016-01-13 | 杨靖康 | Reversing speed reducer |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140528 |