CN201594807U - Pumping unit speed regulating and dragging device - Google Patents
Pumping unit speed regulating and dragging device Download PDFInfo
- Publication number
- CN201594807U CN201594807U CN2009202455665U CN200920245566U CN201594807U CN 201594807 U CN201594807 U CN 201594807U CN 2009202455665 U CN2009202455665 U CN 2009202455665U CN 200920245566 U CN200920245566 U CN 200920245566U CN 201594807 U CN201594807 U CN 201594807U
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Abstract
The utility model relates to a pumping unit speed regulating and dragging device, which comprises a servo motor (3) and a control system. The control system comprises a control unit (7), an operating panel (6), a driving circuit and a rotation speed feedback circuit. The pumping unit speed regulating and dragging device resolves technical problems that the existing pumping unit dragging device is high in energy consumption when driving. In addition, the pumping unit speed regulating and dragging device has high efficiency and high power factors, simultaneously has higher start property and overload capacity, further has relatively straight motor efficiency curve, and also has extremely high efficiency when in low load.
Description
Technical field
The utility model relates to oil field beam pumping unit speed-regulating drawing device.
Background technology
In present oil exploitation, extensively adopt beam pumping unit.This oil pumper belongs to starting under load equipment, and the required torque of steady running is less, and required torque is very big when starting.In order to satisfy the needs of this certain loads, for many years, the beam-pumping unit actuator is to adopt common electric machine always both at home and abroad, when selecting capacity motor, need be principle to satisfy the oil pumper maximum power requirement, make oil pumper actuator ubiquity low load with strong power phenomenon, though this has solved the startup problem, the normal operation of common electric machine is in light condition, has reduced the power factor and the efficiency of motor of electrical network, increase reactive power consumption, caused energy waste.Especially for stripper well, the common electric machine rotating speed can not be adjusted, and having to change belt pulley has a grade coarse adjustment to the oil pumper jig frequency, does not reach the electrodeless jig frequency of low speed and adjusts this requirement.
Summary of the invention
Drive the high technical problem of energy consumption in order to solve existing oil pumper actuator, the utility model provides a kind of oil pumper speed-regulating drawing device, when making the motor of oil pumper actuator have high efficiency, High Power Factor, has higher startability and bigger overload capacity, and the electric efficiency curve ratio is more straight, also has very high efficient during underload.
Technical solution of the present utility model is:
A kind of oil pumper speed-regulating drawing device, its difference is: described speed-regulating drawing device comprises servomotor 3 and control system, described control system comprises control unit 7, guidance panel 6, drive circuit and speed feedback circuit,
Described drive circuit comprises rectification unit 12, power model 8; Described rectification unit 12 can be rectified into power frequency three-phase alternating current source direct voltage and output, and described power model 8 becomes to be higher than the three-phase alternating voltage of power frequency and to send into servomotor 3 with the dc voltage conversion of rectification unit 12 outputs;
Described speed feedback circuit comprises with the rotary encoder 4 of servomotor 3 coaxial rotation, can convert rotary encoder 4 output signals to digital signal and send into the speed detection unit 9 of control unit 7;
Described operating unit 6 is used to set rotary speed parameter and the rotary speed parameter of setting is sent into control unit 7;
Described control unit 7 can generate the control signal of power model according to the tach signal that the rotary speed parameter and the speed detection unit of setting are sent into, and this signal is used for the frequency of the three-phase alternating voltage signal of power controlling module 8 outputs.
Above-mentioned speed-regulating drawing device also comprises the energy back circuit, and described energy back circuit comprises inversion unit 10 and filter unit 11, and the input of described inversion unit 10 links to each other with the output of rectification unit 12; The output of described inversion unit 10 links to each other with the input of filter unit; The output termination power frequency three-phase alternating-current supply of described filter unit.
Above-mentioned speed-regulating drawing device also comprises hot protected location, and described hot protected location comprises the thermistor 13 that is arranged in the motor, and the signal of described thermistor 13 is sent into control unit 7.
Above-mentioned servomotor is a three-phase ac synchronous motor.
The beneficial effect that the utility model had:
1, the utility model actuator adopts servomotor can realize 0 to the rotational speed regulation between the rated speed, satisfies the requirement that oil pumper is adjusted jig frequency, reduces operation intensity, and speed governing is easy and simple to handle, greatly reduces the operation intensity of field worker.
3, energy-saving effect is remarkable.The utility model actuator adopts servomotor, calculates according to the practical application statistics, and the more former type of drive of servo system has significant power savings, reduces meritorious electric weight 15%-45%, capacity of idle power 80%-95%; The motor power (output) factor is greater than 0.9.Comparatively speaking, be that pump load is big more, the jig frequency frequency is low more for barreler, power savings is obvious more.
4, the built-in thermistor of servomotor of the present utility model is guaranteed motor safety, prolongs motor useful life.
Description of drawings
Fig. 1 is the structural representation of the utility model actuator;
Wherein: 3-servomotor, 4-rotary encoder, 5-air switch, 6-guidance panel, 7-control unit, 8-power model, 9-speed detection unit, 10-inversion unit, 11-filter unit, 12-rectification unit, 13-thermistor.
Embodiment
As Fig. 1 is structural representation of the present utility model, it comprises servomotor 3 and control system, servomotor 3 is a three-phase ac synchronous motor, control system comprises control unit 7, guidance panel 6, drive circuit, energy back circuit, hot protected location and speed feedback circuit, and drive circuit comprises rectification unit 12, power model 8; Rectification unit 12 can be rectified into power frequency three-phase alternating current source direct voltage and output, and power model 8 becomes to be higher than the three-phase alternating voltage of power frequency and to send into servomotor 3 with the dc voltage conversion of rectification unit 12 outputs; The speed feedback circuit comprises with the rotary encoder 4 of servomotor 3 coaxial rotation, can convert rotary encoder 4 output signals to digital signal and send into the speed detection unit 9 of control unit 7; Operating unit 6 is used to set rotary speed parameter and the rotary speed parameter of setting is sent into control unit 7; Hot protected location comprises the thermistor 13 that is arranged in the motor, and the signal of described thermistor 13 is sent into control unit 7; Control unit 7 can generate the control signal of power model according to the tach signal that the rotary speed parameter and the speed detection unit of setting are sent into, and this signal is used for the frequency of the three-phase alternating voltage signal of power controlling module 8 outputs; Control unit also can cut off the input voltage of servomotor 3 according to the output signal of thermistor; The energy back circuit comprises inversion unit 10 and filter unit 11, and the input of described inversion unit 10 links to each other with the output of rectification unit 12; The output of described inversion unit 10 links to each other with the input of filter unit; The output termination power frequency three-phase alternating-current supply of described filter unit.
During work, open air switch 5, rectification unit is rectified into direct current signal with the three-phase main-frequency ac supply signal, power cell is reverse into the three-phase alternating current drive servomotor higher than work frequency according to the control signal of control unit with direct current signal, with the rotary encoder of the coaxial rotation of servomotor output signal is sent into rotation speed detection unit, rotation speed detection unit is sent speed feedback signal into control unit, forms the speed closed loop feedback loop, thus the rotating speed of control servomotor.
When dragging system was operated in light condition, the energy back circuit converted the excess energy of rectification unit output to three-phase alternating voltage by inversion unit, sends back in the three-phase alternating-current supply behind over commutation again.
Claims (4)
1. oil pumper speed-regulating drawing device, it is characterized in that: described speed-regulating drawing device comprises servomotor (3) and control system, described control system comprises control unit (7), guidance panel (6), drive circuit and speed feedback circuit,
Described drive circuit comprises rectification unit (12), power model (8); Described rectification unit (12) can be rectified into power frequency three-phase alternating current source direct voltage and output, and described power model (8) becomes to be higher than the three-phase alternating voltage of power frequency and to send into servomotor (3) with the dc voltage conversion of rectification unit (12) output;
Described speed feedback circuit comprises with the rotary encoder (4) of servomotor (3) coaxial rotation, can convert rotary encoder (4) output signal to digital signal and send into the speed detection unit (9) of control unit (7);
Described operating unit (6) is used to set rotary speed parameter and the rotary speed parameter of setting is sent into control unit (7);
Described control unit (7) can generate the control signal of power model according to the tach signal that the rotary speed parameter and the speed detection unit of setting are sent into, and this signal is used for the frequency of the three-phase alternating voltage signal of power controlling module (8) output.
2. oil pumper speed-regulating drawing device according to claim 1, it is characterized in that: described speed-regulating drawing device also comprises the energy back circuit, described energy back circuit comprises inversion unit (10) and filter unit (11), and the input of described inversion unit (10) links to each other with the output of rectification unit (12); The output of described inversion unit (10) links to each other with the input of filter unit; The output termination power frequency three-phase alternating-current supply of described filter unit.
3. oil pumper speed-regulating drawing device according to claim 1 and 2; it is characterized in that: described speed-regulating drawing device also comprises hot protected location; described hot protected location comprises the thermistor (13) that is arranged in the motor, and the signal of described thermistor (13) is sent into control unit (7).
4. oil pumper speed-regulating drawing device according to claim 3 is characterized in that: described servomotor is a three-phase ac synchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202455665U CN201594807U (en) | 2009-12-02 | 2009-12-02 | Pumping unit speed regulating and dragging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202455665U CN201594807U (en) | 2009-12-02 | 2009-12-02 | Pumping unit speed regulating and dragging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201594807U true CN201594807U (en) | 2010-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202455665U Expired - Fee Related CN201594807U (en) | 2009-12-02 | 2009-12-02 | Pumping unit speed regulating and dragging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201594807U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007022A (en) * | 2015-09-02 | 2015-10-28 | 安徽钟南电器有限责任公司 | Frequency-conversing compensating and energy saving control apparatus of oil pumping unit in oil fields |
| CN111537882A (en) * | 2020-06-01 | 2020-08-14 | 金陵海关技术中心 | Energy-cycling energy efficiency detection system for permanent magnet synchronous motor and application method |
-
2009
- 2009-12-02 CN CN2009202455665U patent/CN201594807U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007022A (en) * | 2015-09-02 | 2015-10-28 | 安徽钟南电器有限责任公司 | Frequency-conversing compensating and energy saving control apparatus of oil pumping unit in oil fields |
| CN111537882A (en) * | 2020-06-01 | 2020-08-14 | 金陵海关技术中心 | Energy-cycling energy efficiency detection system for permanent magnet synchronous motor and application method |
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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: 20100929 Termination date: 20171202 |