CN102315821A - Multifunctional energy-saving frequency-conversion control device - Google Patents
Multifunctional energy-saving frequency-conversion control device Download PDFInfo
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- CN102315821A CN102315821A CN2010102179751A CN201010217975A CN102315821A CN 102315821 A CN102315821 A CN 102315821A CN 2010102179751 A CN2010102179751 A CN 2010102179751A CN 201010217975 A CN201010217975 A CN 201010217975A CN 102315821 A CN102315821 A CN 102315821A
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Abstract
The invention relates to a multifunctional energy-saving frequency-conversion control device, which is provided with a control cabinet, an isolating contactor, a control motor contactor, a control motor axial-flow fan contactor, a circuit breaker, a control loop circuit breaker, a control frequency converter contactor, a frequency converter, a PLC (programmable logic controller), an upper limiting sensor, a lower limiting sensor, a motor parameter display, an industrial-frequency indicating lamp, a frequency-conversion indicating lamp, a control axial-flow fan conversion switch, an industrial-frequency/frequency-conversion switch, a motor industrial-frequency starting button, an isolating contactor starting button, an isolating contactor stopping button, a frequency converter operation button, a motor industrial-frequency stopping button and a speed adjusting potential. In the multifunctional energy-saving frequency-conversion control device, the control function is complete, the cost is low, the fault rate is low, the automation degree is high, and the energy-saving frequency-conversion control device for an oil pumping machine of an oil field is especially applicable to the oil pumping machine of the oil field or other impact load occasions.
Description
Technical field
The present invention relates to a kind of improvement of oil pumper frequency conversion system, specifically a kind of multifunction energy-saving frequency-converting control device.It is applicable to that oil-field oil pumper uses.
Background technology
The power consumption of motor accounts for more than 50% of total electricity consumption in the whole nation; Therefore the raising of electric motor system efficiency level can be practiced thrift a large amount of electric weight all has positive role to the development of the national economy, environmental protection, energy savings; Countries in the world are all paid much attention to electric motor system is energy-conservation at present; Oil pumper is the main machinery of oilfield exploitation at present, and its power consumption accounts for more than 40% of the total electricity consumption in oil field, and system effectiveness is very low.As everyone knows; Varying load when pump load is has the branch of dynamic and static load characteristic, and its starting torque is 3～4 times of actual loading during starting; When selecting common motor for use; Select for use big starting torque then must not match, power, i.e. so-called " low load with strong power " when power is far below starting during load with load factor.Excessive motor power (output) must make the relative inactivity power of oil pumper increase, and causes grid electricity fee cost high, energy waste.
Summary of the invention
Technical problem to be solved by this invention is in order to overcome the deficiency of above-mentioned prior art; Provide a kind of rational in infrastructure; Cost is low; Automaticity is high, failure rate is low, can adjust rotating speed automatically, thereby the power factor of automatic adjustment system is to reach the multifunction energy-saving frequency-converting control device of energy-conservation purpose.Use on the particularly suitable oil-field oil pumper.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of multifunction energy-saving frequency-converting control device; It is provided with control cubicle; Be provided with in the control cubicle and isolate contactor, control motor contactor (power frequency), control motor shaft flow fan contactor, circuit breaker, control loop with circuit breaker, control of conversion device contactor, frequency converter, PLC, upper limit transducer, lower limit transducer; The speed regulation potentiometer; It is characterized in that the operation by PLC control of conversion device, starting or stoping of motor and normally operation are controlled in frequency converter operation back, after the normal operation of motor; The upper limit transducer and the lower limit transducer that are installed on the oil pumper detect various signals respectively and send signal to PLC; PLC handles according to the unlike signal that receives, and according to result control of conversion device, and frequency converter receives behind the signal of PLC and then the control motor drives oil pumper with upstroke and down stroke different rotating speed and turns round.
Apparatus of the present invention are provided with frequency conversion and two kinds of operational modes of power frequency, at first frequency converter are carried out the setting of electric current, voltage, frequency, multistage speed and various protection parameters.Start to isolate contactor itself and power frequency supply isolated, the operation frequency converter regulate the speed potentiometer by machine operation in the required range of speeds.The used for oil-field oil pumper machine operation is at two kinds of different working states; Upstroke is to be operated in motoring condition; Down stroke is operated in the electromagnetic braking state; Therefore the upper limit transducer that when oil pumper runs to top dead-centre, is installed on the oil pumper sends to PLC with signal, and PLC controls the motor operation through the processing controls frequency converter with second section speed output.When the following transducer that is limited to that is installed on the oil pumper sends to PLC with signal; PLC controls the motor operation through the processing controls frequency converter with first section speed output; Circulate to guarantee that pumping-unit motor is operated under the motoring condition always with this; Thereby whole used for oil extractor frequency-converting control device is operated under the higher efficient and average power factor; And oil pumper motor in upstroke and down stroke process is operated in motoring condition always can make the efficient of oil pumper significantly improve, and therefore uses significantly saves energy of this device.Because this device can make the motor motoring condition of working, and can save the feedback braking unit, and manufacturing cost is significantly reduced always, the electric energy of avoiding again containing humorous wave height to the electrical network feedback is to pollute electrical network.Consider that simultaneously the oil pumper major part all is to work in the open air; Need lot of manpower and material resources that it is managed; Therefore this converter plant also is provided with manual and automatic power frequency operation function, when in a single day frequency converter breaks down, and frequency converter failure instruction output action; Converter plant is transformed into power frequency operation automatically through the control of PLC, has well solved the situation of in the past often shutting down.Owing to adopted PLC and frequency converter can also make each oil pumper and host computer communication, unified management is carried out in monitoring in real time.It is complete that the energy-conservation frequency-converting control device of this Multifunction has controlled function, and cost is low, failure rate is low, automaticity is high, energy-efficient.Particularly suitable used for oil-field oil pumper or other impact load are closed use.
Description of drawings
Fig. 1 is that the present invention forms structural representation.
Fig. 2 is Fig. 1 left view.
Label is among the figure: 1, control cubicle, 2, isolate contactor, 3, control motor contactor (power frequency), 4, control motor shaft flow fan contactor; 5, circuit breaker, 6, control loop uses circuit breaker, 7, control of conversion device contactor, 8, frequency converter; 9, PLC, 10, shielded type cable, 11, the upper limit transducer, 12, the lower limit transducer; 13, power frequency indicator light, 14, parameter of electric machine display, 15, the frequency conversion indicator light, 16, Control Shaft flow fan change over switch; 17, power frequency/frequency conversion change over switch, 18, motor power frequency start button, 19, isolate the Contactor Starting button, 20, frequency converter operation button; 21, motor power frequency stop button, 22, isolate the contactor stop button, 23, the speed regulation potentiometer.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described:
Like Fig. 1, shown in Figure 2; A kind of multifunction energy-saving frequency-converting control device, be provided with control cubicle 1 and in control cubicle 1, be provided with isolate contactor 2, control motor contactor (power frequency) 3, control motor shaft flow fan contactor 4, circuit breaker 5, control loop with circuit breaker 6, control of conversion device contactor 7, frequency converter 8, PLC 9, shielded type cable 10, upper limit transducer 11, down be limited to transducer 12, power frequency indicator light 13, parameter of electric machine display 14, frequency conversion indicator light 15, Control Shaft flow fan change over switch 16, power frequency/frequency conversion change over switch 17, motor power frequency start button 18, isolate Contactor Starting button 19, frequency converter operation button 20, motor power frequency stop button 21, isolation contactor stop button 22, speed regulation potentiometer 23.
This device closes the interior circuit breaker 5 of control cubicle, control loop with circuit breaker 6, the running of control motor shaft flow fan contactor 4 adhesive motor shaft flow fans, and PLC powers on simultaneously.Press and isolate the Contactor Starting button, isolate contactor adhesive, frequency converter and power frequency supply and isolate.Power frequency/frequency conversion change over switch is turned to the frequency conversion position, press frequency converter operation button, frequency converter brings into operation, the governing speed potentiometer make machine operation at required rotating speed to guarantee oil pumper jig frequency work on request.The upper limit transducer that when oil pumper runs to top dead-centre, is installed on the oil pumper sends to PLC with signal, and PLC controls the motor operation through the processing controls frequency converter with second section speed output.When the following transducer that is limited to that is installed on the oil pumper sends to PLC with signal; PLC controls the motor operation through the processing controls frequency converter with first section speed output; Circulate to guarantee that pumping-unit motor is operated under the motoring condition always with this; Thereby whole used for oil extractor frequency-converting control device is operated under the higher efficient and average power factor; And oil pumper motor in upstroke and down stroke process is operated in motoring condition always can make the efficient of oil pumper significantly improve, and therefore uses significantly saves energy of this device.Because this device can make the motor motoring condition of working, and can save the feedback braking unit, and manufacturing cost is significantly reduced always, the electric energy of avoiding again containing humorous wave height to the electrical network feedback is to pollute electrical network.
The oil-field oil pumper major part all is to work in the open air, needs lot of manpower and material resources that it is managed, so this converter plant also is provided with manual and automatic power frequency operation function.Power frequency/frequency conversion change over switch is turned to the power frequency position, press motor power frequency start button, the adhesive of control motor contactor (power frequency), motor is pressed motor power frequency stop button with power frequency operation, and motor is out of service.Simultaneously when in a single day frequency converter breaks down, frequency converter failure instruction output action, converter plant is transformed into power frequency operation automatically through the control of PLC, has well solved the situation of in the past often shutting down.Owing to adopted PLC and frequency converter can also make each oil pumper and host computer communication, unified management is carried out in monitoring in real time.It is complete that the energy-conservation frequency-converting control device of this Multifunction has controlled function, and cost is low, failure rate is low, automaticity is high, energy-efficient.Particularly suitable used for oil-field oil pumper or other impact load occasion are used.
Claims (1)
1. multifunction energy-saving frequency-converting control device; It is provided with control cubicle; Be provided with in the control cubicle and isolate contactor, control motor contactor (power frequency), control motor shaft flow fan contactor, circuit breaker, control loop with circuit breaker, control of conversion device contactor, frequency converter, PLC, upper limit transducer, lower limit transducer; The speed regulation potentiometer; It is characterized in that the operation by PLC control of conversion device, starting or stoping of motor and normally operation are controlled in frequency converter operation back, after the normal operation of motor; The upper limit transducer and the lower limit transducer that are installed on the oil pumper detect various signals respectively and send signal to PLC; PLC handles according to the unlike signal that receives, and according to result control of conversion device, and frequency converter receives behind the signal of PLC and then the control motor drives oil pumper with upstroke and down stroke different rotating speed and turns round.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102179751A CN102315821A (en) | 2010-06-29 | 2010-06-29 | Multifunctional energy-saving frequency-conversion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102179751A CN102315821A (en) | 2010-06-29 | 2010-06-29 | Multifunctional energy-saving frequency-conversion control device |
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| Publication Number | Publication Date |
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| CN102315821A true CN102315821A (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102179751A Pending CN102315821A (en) | 2010-06-29 | 2010-06-29 | Multifunctional energy-saving frequency-conversion control device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762589A (en) * | 2017-03-06 | 2017-05-31 | 杨欢 | A kind of oil pumper timesharing arrangements for speed regulation |
| WO2017138346A1 (en) * | 2016-02-12 | 2017-08-17 | 株式会社デンソー | Electronic control unit, and electric power steering device in which same is used |
| CN110952955A (en) * | 2018-09-26 | 2020-04-03 | 中国石油化工股份有限公司 | Automatic control device for operation of oil pumping unit and energy-saving method |
| CN113294127A (en) * | 2021-05-12 | 2021-08-24 | 青岛力久电机科技有限公司 | Special intelligent control system for oil pumping unit |
| CN117060684A (en) * | 2023-10-11 | 2023-11-14 | 山西美锦氢能开发有限公司 | Automatic fault power frequency cutting device for high-voltage frequency converter and working method thereof |
-
2010
- 2010-06-29 CN CN2010102179751A patent/CN102315821A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017138346A1 (en) * | 2016-02-12 | 2017-08-17 | 株式会社デンソー | Electronic control unit, and electric power steering device in which same is used |
| JP2017143203A (en) * | 2016-02-12 | 2017-08-17 | 株式会社デンソー | Electronic control unit, and, electric power steering device using the same |
| CN108702126A (en) * | 2016-02-12 | 2018-10-23 | 株式会社电装 | Electronic control unit and the electric power-assisted steering apparatus for using the electronic control unit |
| CN108702126B (en) * | 2016-02-12 | 2021-08-10 | 株式会社电装 | Electronic control unit and electric power steering apparatus using the same |
| CN106762589A (en) * | 2017-03-06 | 2017-05-31 | 杨欢 | A kind of oil pumper timesharing arrangements for speed regulation |
| CN110952955A (en) * | 2018-09-26 | 2020-04-03 | 中国石油化工股份有限公司 | Automatic control device for operation of oil pumping unit and energy-saving method |
| CN110952955B (en) * | 2018-09-26 | 2023-06-20 | 中国石油化工股份有限公司 | Automatic control device for operation of oil pumping unit and energy saving method |
| CN113294127A (en) * | 2021-05-12 | 2021-08-24 | 青岛力久电机科技有限公司 | Special intelligent control system for oil pumping unit |
| CN117060684A (en) * | 2023-10-11 | 2023-11-14 | 山西美锦氢能开发有限公司 | Automatic fault power frequency cutting device for high-voltage frequency converter and working method thereof |
| CN117060684B (en) * | 2023-10-11 | 2024-01-05 | 山西美锦氢能开发有限公司 | Automatic fault power frequency cutting device for high-voltage frequency converter and working method thereof |
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Application publication date: 20120111 |