CN103795226A - Low-power-consumption pumping unit frequency converter with automatic intermittent pumping function and direct stroke frequency control function - Google Patents
Low-power-consumption pumping unit frequency converter with automatic intermittent pumping function and direct stroke frequency control function Download PDFInfo
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- CN103795226A CN103795226A CN201410079285.2A CN201410079285A CN103795226A CN 103795226 A CN103795226 A CN 103795226A CN 201410079285 A CN201410079285 A CN 201410079285A CN 103795226 A CN103795226 A CN 103795226A
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- 238000005086 pumping Methods 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 239000003129 oil well Substances 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The invention discloses a low-power-consumption pumping unit frequency converter with an automatic intermittent pumping function and a direct stroke frequency control function, and relates to the technical field of oil field pumping unit control. The low-power-consumption pumping unit frequency converter comprises a control panel, a control unit, a rectification unit, an inversion unit and a remote alarm port. The control unit integrates the automatic intermittent pumping logic, a stroke frequency conversion algorithm and an ultra-low-power-consumption inversion modulation algorithm, so that the frequency converter has half power consumption compared with that of a general-purpose frequency converter with the same power level, has the convenient automatic intermittent pumping function and the quick stroke frequency change function, and is an energy-saving frequency converter which is particularly suitable for oil field pumping units.
Description
Technical field
The present invention relates to oil-field oil pumper control technology field.
Background technology
The oil-field oil pumper frequency converter that scale has been used is now to reduce energy consumption and to control flexibly oil recovery amount according to liquid measure, thereby General Promotion oil recovery efficiency reduces cost for oil production.But most employings is universal frequency converter at present.And universal frequency converter is while being applied to oil pumper, first, the energy consumption that frequency converter self is of certain scale, himself power consumption of common tens kilowatts of following frequency converters accounts for 3～4% of capacity, himself power consumption can balance out the energy-saving effect that the speed governing of equivalent brings, thereby the energy consumption of most of oil well is reduced seldom even slightly in larger speed adjustable range raise.
Secondly, what universal frequency converter directly showed is output frequency, speed governing is that the size by adjusting its output frequency realizes, and adjust the jig frequency of oil pumper, at every turn all will be through changing output frequency, people's work card stopwatch is measured the time of continuous several strokes, calculate change after jig frequency, then with desired jig frequency comparison, again change output frequency according to difference and measure, calculate and compare, so need to repeatedly circulate and calculate just the progressively desired jig frequency of convergence, not only time-consuming but also require great effort.
Again, for any oil well, do not affecting under the situation of output, between to take out be all energy saving way preferably, universal frequency converter is taken out between realizing often needs the extra more expensive outside plant that increases, as PLC controller or special between take out controller, and between current, smoking timing controlled is all a hour magnitude, under the condition of not falling to produce, be only suitable for the oil well of 2 tons of following production fluid amounts, and cannot be applied to the oil well of higher liquid measure.
Summary of the invention
For prior art deficiency, the invention provides a kind ofly with smoking control between automatically, can directly input desired jig frequency and need not block that stopwatch is artificial to be calculated, the oil pumper frequency converter of super low-power consumption.
The present invention is mainly made up of control panel, control unit, rectification unit, inversion unit and remote alarm interface, and by main control module, inversion modulation module, jig frequency conversion module with automatically, pumping mode piece forms control unit,
Described rectification unit is provided with the input being connected with electrical network, and the control output end of rectification unit is connected to the input of main control module, and the electrical signal of rectification unit is connected to one end of inversion unit, and inversion unit is provided with motor feeder ear; The control signal input of inversion modulation module is connected to the output of main control module, and the control signal output of inversion modulation module is connected with the control signal input of inversion unit; The output of control panel is connected to the input of main control module, jig frequency conversion module with automatically between pumping mode piece is connected with main control module respectively, the output of pumping mode piece arranges remote alarm interface between automatic.
Automatically between, take out function by control unit automatically between pumping mode piece complete.The startup timing constant of taking out between setting by control panel and stop timing constant and take out enabling constant.When starting timing constant, stop timing constant and enable after constant all sets, automatically pumping mode BOB(beginning of block) " startup timing " work between, after " startup timing " finishes, automatically between, pumping mode piece stops frequency converter output automatically by main control module, and beginning " stopping timing " work, " stop timing " and finish first 1 minute, remote alarm interface output audio alert signal, external loudspeaker audio alert, after " stopping regularly " completing, remove audio alert, automatically between pumping mode piece automatically start frequency converter output by main control module, start to take out circulation between the next one.
Directly jig frequency control function is completed by the jig frequency conversion module in control unit.For example, for the three phase mains of same frequency (50Hz), different oil wells is because the mechanical parameters such as its motor pole number and oil pumper gearratio may be different, thereby jig frequency may be had nothing in common with each other.But with regard to same well, under the constant situation of the mechanical part such as motor and oil pumper, jig frequency is directly proportional to the frequency of three phase mains.Jig frequency conversion module is realized according to this principle.This frequency converter is being installed to after oil well, start frequency converter with a random frequency, measure jig frequency now, then this jig frequency is input to frequency converter by control panel, jig frequency conversion module can calculate the proportionality constant of jig frequency and the supply frequency of this oil well automatically, and stores in non-volatile memory.This has just completed the initialization of jig frequency conversion module.When any time need to change jig frequency later, need only input new jig frequency numerical value at control panel, jig frequency conversion module will calculate the supply frequency making new advances automatically, and makes frequency converter export the three-phase alternating current of this frequency to inversion unit by main control module again to inversion modulation module.So oil pumper is just at once with new jig frequency operation.
Low-power consumption is realized by the inversion modulation module in control unit.Inversion modulation module generates the required three-phase PWM modulator control signal of inversion unit work.The power consumption overwhelming majority of frequency converter concentrates on inversion unit, and the saturation voltage drop of inversion device IGBT is wherein similar to a constant V
cEO, this constant is exactly the saturation conduction loss of this IGBT with the product of the electric current by it.IGBT is by ending in magnifying state by the end of conducting with by being conducting to, and loss is now much larger than saturation conduction loss, and this loss is called switching loss.Conduction loss and switching loss form the power consumption of inversion device IGBT.Due to PWM modulation, inversion device is worked under the impulse wave state of certain frequency all the time, thereby the approximate switching frequency that is proportional to of the power consumption of inversion unit.But modulating frequency is higher, modulation quality is better, and modulating frequency is lower, and modulation quality is poorer.Inversion modulation module is tried to achieve and is approached optimum balance point between modulating frequency and modulation quality, adopts the minimum modulating frequency guaranteeing under modulation quality, thereby significantly reduces the switching loss of inversion device, has namely significantly reduced the power consumption of frequency converter.
Control panel of the present invention is used for inputting instruction and display parameters; Control unit is carried out electrical quantity monitoring, is taken out controls, jig frequency conversion, generation three-phase PWM modulator control signal, coordinates the work between other unit; Rectification unit is direct current filtering the three-phase alternating current electric rectification of electrical network; The three-phase PWM modulator control signal that inversion unit provides according to control unit becomes the DC inverter of rectification unit output the three-phase alternating current of frequency and voltage variable, drives three phase electric machine to rotate; Remote alarm interface is the inner audio alert signal that provides for a minute in advance while automatically starting frequency converter during taking out.
Taking out control is therebetween the meticulous control of minute magnitude, applicable to the oil well of 20 tons of following production fluid amounts, and the range of application of taking out between greatly improving; Its control panel can directly show jig frequency, changes this jig frequency numerical value, at once with new jig frequency operation, adjusts jig frequency simple and efficient accurately; Himself power-dissipation-reduced is to the 1-2% of capacity, and energy-saving effect obviously increases.
In addition, the present invention also can also connect remote input interface at the output of main control module, passage that can this frequency converter of remote control.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Embodiment
As shown in Figure 1, the present invention is mainly made up of control panel 1, control unit 2, rectification unit 3, inversion unit 4, remote input interface 5 and remote alarm interface 6.
By main control module 21, inversion modulation module, jig frequency conversion module 23 with automatically, pumping mode piece 24 forms control unit 2.
The control signal input of inversion modulation module 22 is connected to the output of main control module 21, and the control signal output of inversion modulation module 22 is connected with the control signal input of inversion unit 4.
The output of control panel 1 and remote input interface 5 is connected to the input of main control module 21, jig frequency conversion module 23 with automatically between pumping mode piece 24 be connected with main control module 21 respectively, between automatically, the output of pumping mode piece 24 arranges remote alarm interface 6.
Claims (2)
1. between being with automatically, take out the low-power consumption oil pumper frequency converter with direct jig frequency control, it is characterized in that mainly being formed by control panel, control unit, rectification unit, inversion unit and remote alarm interface, by main control module, inversion modulation module, jig frequency conversion module with automatically, pumping mode piece forms control unit, described rectification unit is provided with the input being connected with electrical network, the control output end of rectification unit is connected to the input of main control module, the electrical signal of rectification unit is connected to one end of inversion unit, and inversion unit is provided with motor feeder ear; The control signal input of inversion modulation module is connected to the output of main control module, and the control signal output of inversion modulation module is connected with the control signal input of inversion unit; The output of control panel is connected to the input of main control module, jig frequency conversion module with automatically between pumping mode piece is connected with main control module respectively, the output of pumping mode piece arranges remote alarm interface between automatic.
2. band is taken out between automatically and the direct low-power consumption oil pumper frequency converter of jig frequency control according to claim 1, it is characterized in that also connecting remote input interface at the output of main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410079285.2A CN103795226B (en) | 2014-03-06 | 2014-03-06 | Take out, between band is automatic, the low-power consumption oil pumper converter controlled with direct jig frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410079285.2A CN103795226B (en) | 2014-03-06 | 2014-03-06 | Take out, between band is automatic, the low-power consumption oil pumper converter controlled with direct jig frequency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103795226A true CN103795226A (en) | 2014-05-14 |
| CN103795226B CN103795226B (en) | 2016-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410079285.2A Active CN103795226B (en) | 2014-03-06 | 2014-03-06 | Take out, between band is automatic, the low-power consumption oil pumper converter controlled with direct jig frequency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863572A (en) * | 2016-05-10 | 2016-08-17 | 北京高和华泰节能环保科技有限公司 | Intelligent control system of pumping unit and intelligent oil pumping control method of intelligent control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328214A (en) * | 2000-11-02 | 2001-12-26 | 北京威斯顿优利仪器仪表科技发展有限公司 | Electric power circulation detection and diagnosis technique for petroleum recovering station |
| CN201004605Y (en) * | 2007-01-24 | 2008-01-09 | 天津市艾雷特电气仪表有限公司 | Special middle frequency conversion power supply device |
| CN101333919A (en) * | 2008-07-18 | 2008-12-31 | 杜宝华 | Energy-saving oil pumping machine |
| CN201307238Y (en) * | 2008-12-01 | 2009-09-09 | 张宝军 | Intelligent detection and control system for rod-pumped wells |
-
2014
- 2014-03-06 CN CN201410079285.2A patent/CN103795226B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328214A (en) * | 2000-11-02 | 2001-12-26 | 北京威斯顿优利仪器仪表科技发展有限公司 | Electric power circulation detection and diagnosis technique for petroleum recovering station |
| CN201004605Y (en) * | 2007-01-24 | 2008-01-09 | 天津市艾雷特电气仪表有限公司 | Special middle frequency conversion power supply device |
| CN101333919A (en) * | 2008-07-18 | 2008-12-31 | 杜宝华 | Energy-saving oil pumping machine |
| CN201307238Y (en) * | 2008-12-01 | 2009-09-09 | 张宝军 | Intelligent detection and control system for rod-pumped wells |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863572A (en) * | 2016-05-10 | 2016-08-17 | 北京高和华泰节能环保科技有限公司 | Intelligent control system of pumping unit and intelligent oil pumping control method of intelligent control system |
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| CN103795226B (en) | 2016-10-19 |
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Inventor after: Zheng Haijin Inventor after: Wang Guohui Inventor after: Deng Jibin Inventor before: Zheng Haijin Inventor before: Wang Guohui |
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