CN201332384Y - Dragging device specially for oil pumping unit in oil field - Google Patents
Dragging device specially for oil pumping unit in oil field Download PDFInfo
- Publication number
- CN201332384Y CN201332384Y CNU2009200928594U CN200920092859U CN201332384Y CN 201332384 Y CN201332384 Y CN 201332384Y CN U2009200928594 U CNU2009200928594 U CN U2009200928594U CN 200920092859 U CN200920092859 U CN 200920092859U CN 201332384 Y CN201332384 Y CN 201332384Y
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- CN
- China
- Prior art keywords
- phasor
- igbt
- switch
- comparator
- cpu processor
- 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 - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Control Of Ac Motors In General (AREA)
Abstract
A dragging device specially for an oil pumping unit in the oil field, belongs to the technical field of automatic control and comprises a motor, an IGBT phasor switch, a filter and a rectifier, an overpressure comparator is connected with a power supply bus between the IGBT phasor switch and the filter, the overpressure comparator is connected with a CPU processor which is connected with the IGBT phasor switch. When the motor is in the inverse generating, the voltage of the power supply rises, the overpressure comparator is opened, the CPU processor is touched to work, the CPU processor sends out the frequency increasing instruction for the IGBT phasor switch, the waveform frequency of the IGBT phasor switch is increased, the rotating speed of the motor is increased and drives the oil pumping unit to run. The utility model can effectively improve the operating efficiency, and has lower loss degree of device, energy conservation and reliable capability.
Description
Technical field:
The utility model belongs to the automatic control technology field, is a kind of control device of oil-field oil pumper.
Background technology:
The dynamical system of oil pumper mainly is made of motor, IGBT phasor switch, filter and rectifier, and power supply is powered to motor by IGBT phasor switch through filtering and rectification, and the electric weight weighing apparatus is fixed.Owing to oil pumper counterweight imbalance, the anti-situation of generating electricity of motor often takes place in the oilfield exploitation, and promptly motor obtains the electric energy deficiency, and rotating speed is not enough, drives motor ruuning situation thereby oil pumper occurs, and power supply buses voltage raises, and is serious to equipment damage.Especially the rare-earth permanent-magnet synchronous motor that frequency converter is arranged that present oil-field oil pumper is adopted, the anti-problem of generating electricity of more frequent generation.
Summary of the invention:
The technical problems to be solved in the utility model is to disclose the special-purpose actuator of a kind of oil-field oil pumper, when anti-generating situation occurring, impels IGBT phasor switch to increase amount of power supply to motor, improves motor speed, and then stops that motor is counter to generate electricity.
The scheme of the utility model technical solution problem is to be connected with overvoltage comparator on the power supply buses between IGBT phasor switch and the filter, and overvoltage comparator is connected with the CPU processor, and the CPU processor is connected with IGBT phasor switch.When anti-generating situation appears in motor, power supply buses voltage raises, and opens overvoltage comparator, trigger the work of CPU processor, the CPU processor sends the increase frequency instruction to IGBT phasor switch, and it is big that IGBT phasor switching waveform frequency becomes, motor speed increases, and initiatively drags the oil pumper running.
Wherein, overvoltage comparator is made of comparator U, dropping resistor R1, RT1 and setting resistance R 2 and RT2, the positive pole of comparator U is connected power supply buses by dropping resistor RT1 with R1, the negative pole of comparator U is connected a setting voltage power supply by setting resistance R T2 with R2, the output of comparator U connects the input pin 1 of CPU processor, and CPU processor output pin 8 connects the pin D of IGBT phasor switch.Comparator U compares with setting voltage value after receiving bus voltage signal by dropping resistor R1, RT1, when the positive pole of comparator U is in high potential, illustrating that motor is counter generates electricity, comparator U conducting, the work of CPU processor, send the increase frequency instruction to IGBT phasor switch, it is big that IGBT phasor switching waveform frequency becomes, and motor speed increases.
The utility model is by detecting bus voltage value, to motor whether anti-generating make judgement, and stop effectively that motor is counter to generate electricity, improved operating efficiency effectively, the equipment loss degree is low, saves energy is simple in structure, dependable performance.
Description of drawings:
Accompanying drawing is the utility model electronic-circuit diagram.
Embodiment:
The utility model is by motor 1, IGBT phasor switch 2, filter 3 and rectifier 4 constitute, on the power supply buses between IGBT phasor switch 2 and the filter 3, be connected with overvoltage comparator 5, overvoltage comparator 5 is connected with CPU processor 6, CPU processor 6 is connected with IGBT phasor switch 2, wherein, overvoltage comparator 5 is by comparator U, dropping resistor R1, RT1 and setting resistance R 2 and RT2 constitute, the positive pole of comparator U is connected power supply buses by dropping resistor RT1 with R1, the negative pole of comparator U is connected a setting voltage power supply by setting resistance R T2 with R2, the output of comparator U connects the input pin 1 of CPU processor 6, and CPU processor 6 output pins 8 connect the pin D of IGBT phasor switch 2.
Claims (2)
1, the special-purpose actuator of a kind of oil-field oil pumper, constitute by motor, IGBT phasor switch, filter and rectifier, it is characterized in that: be connected with overvoltage comparator on the power supply buses between IGBT phasor switch and the filter, overvoltage comparator is connected with the CPU processor, and the CPU processor is connected with IGBT phasor switch.
2, the special-purpose actuator of oil-field oil pumper according to claim 1, it is characterized in that: overvoltage comparator is made of comparator U, dropping resistor R1, RT1 and setting resistance R 2 and RT2, the positive pole of comparator U is connected power supply buses by dropping resistor RT1 with R1, the negative pole of comparator U is connected a setting voltage power supply by setting resistance R T2 with R2, the output of comparator U connects the input pin 1 of CPU processor, and CPU processor output pin 8 connects the pin D of IGBT phasor switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200928594U CN201332384Y (en) | 2009-01-14 | 2009-01-14 | Dragging device specially for oil pumping unit in oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200928594U CN201332384Y (en) | 2009-01-14 | 2009-01-14 | Dragging device specially for oil pumping unit in oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201332384Y true CN201332384Y (en) | 2009-10-21 |
Family
ID=41225769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200928594U Expired - Lifetime CN201332384Y (en) | 2009-01-14 | 2009-01-14 | Dragging device specially for oil pumping unit in oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201332384Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103501152A (en) * | 2013-09-18 | 2014-01-08 | 东北大学 | Method for controlling pumping unit motor in frequency-conversion mode |
| CN111987963A (en) * | 2020-07-16 | 2020-11-24 | 深圳市正弦电气股份有限公司 | Self-adaptive energy-saving control system and method for oil field |
| CN112422016A (en) * | 2019-08-22 | 2021-02-26 | 深圳市正弦电气股份有限公司 | Self-adaptive intelligent energy-saving control method and control system for oil pumping unit in oil field |
-
2009
- 2009-01-14 CN CNU2009200928594U patent/CN201332384Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103501152A (en) * | 2013-09-18 | 2014-01-08 | 东北大学 | Method for controlling pumping unit motor in frequency-conversion mode |
| CN112422016A (en) * | 2019-08-22 | 2021-02-26 | 深圳市正弦电气股份有限公司 | Self-adaptive intelligent energy-saving control method and control system for oil pumping unit in oil field |
| CN112422016B (en) * | 2019-08-22 | 2022-06-24 | 深圳市正弦电气股份有限公司 | Self-adaptive intelligent energy-saving control method and control system for oil pumping unit in oil field |
| CN111987963A (en) * | 2020-07-16 | 2020-11-24 | 深圳市正弦电气股份有限公司 | Self-adaptive energy-saving control system and method for oil field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091021 |
|
| CX01 | Expiry of patent term |