CN1417914A - Automatic control protector for motor of pumping unit in intermittent work mode - Google Patents
Automatic control protector for motor of pumping unit in intermittent work mode Download PDFInfo
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- CN1417914A CN1417914A CN01135854A CN01135854A CN1417914A CN 1417914 A CN1417914 A CN 1417914A CN 01135854 A CN01135854 A CN 01135854A CN 01135854 A CN01135854 A CN 01135854A CN 1417914 A CN1417914 A CN 1417914A
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- circuit
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- pumping unit
- single chip
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Abstract
The present invention relates to oil extracting machine technology, especially an automatic control protector for motor of pumping unit in intermittent work mode. Monochip computer circuit is used in real-time detection and prediction of pumping unit motor load change to shut down and re-start the pumping unit in optimal time and to make the motor work intermittently. The protector of the present invention consists of monochip computer circuit, sampling circuit, shaper circuit, phase sequence circuit, phase detecting circuit, protector circuit and driver circuit.
Description
(1) technical field
Technical field of the present invention relates to the motor of oil extractor automatic protection device that uses in the oil recovery machiner of oil field, provides a kind of automatic control protector for motor of pumping unit in intermittent work mode especially.
(2) background technology
At present, the main energy sources of oil exploitation is an electricity, and at producing well, motor provides power to oil pumper, and electric energy is converted to mechanical energy, and oil pumper is as the load of motor.Generally speaking, oil pumper keeps a fixing load capacity in extraction process, under the drive of motor, with the fixing stroke frequency, continuously works.But the underground load of oil well is along with liquid level, liquid measure and submergence change, and oil pumper can't respond to underground load variations, therefore, usually can be operated under the operating state of halfload or light load.Usually adopt traditional way by manual detection in the oil field, manually make oil pumper stop, intermittently behind the certain hour, Artificial Control comes into operation again.Like this, can make oil pumper be operated under the normal load state as far as possible, reduce the power consumption of motor operation, and the loss of distribution transformer and distribution line, for producing well is saved electric energy.
Because oil pumper is under motor drives, continuously operation is subjected to the influence of load variations simultaneously again for a long time, makes oil pumper regular meeting be under the operating state of varying loading, is easy to break down.In the reality, oil pumper has only been installed the fuse protection of overcurrent protection, and this motor for oil pumper is far from being enough.Though; protective device has been installed in protection at motor; the protection motor is not damaged; but; it also only is protection at motor; aspect automatic control motor of pumping unit in intermittent working method, particularly intermittent work mode has increased the number of starts of motor, more needs motor is protected.
(3) summary of the invention
The object of the present invention is to provide a kind of motor of pumping unit in intermittent working method automatic protection device, the application single board computer detects in real time the motor of oil extractor load variations and predicts, when the liquid level under the producing well, submergence are reduced to a threshold value, just during the load step-down of motor of oil extractor, oil pumper is turned off in control automatically; Liquid level under producing well, when submergence returns to predicted value, choose Best Times automatically and open oil pumper and recover to recover the oil, realize motor of pumping unit in intermittent work mode.The present invention has increased the defencive function to motor to motor of pumping unit in intermittent work mode.
Technical scheme of the present invention be achieved in that a kind of motor of pumping unit in intermittent working method automatic protection device by single chip circuit, sample circuit, shaping circuit, phase sequence circuit, survey circuitry phase, protective circuit, drive circuit and form, it is characterized in that current sampling circuit [1], voltage sample circuit [2] are connected with shaping circuit [3], voltage sample circuit [2] is connected with phase sequence circuit [4], shaping circuit [3] is connected with survey circuitry phase [6] with phase sequence circuit [4], surveys circuitry phase [6] and is connected with the single chip circuit that computer software is housed [8]; Current sampling circuit [1], voltage sample circuit [2] also are connected with protective circuit [5], and protective circuit [5] is connected with the single chip circuit that computer software is housed [8]; The single chip circuit [8] that computer software is housed carries out analyzing and processing to the protective circuit [5] and the signal of sending into of surveying circuitry phase [6], and provides signal, sends into coupled drive circuit [7].
Advantage compared with the prior art of the present invention is, by sample circuit, shaping circuit, phase sequence circuit, single chip circuit, has realized the real-time detection to oil pumper; Provide the check and analysis of signal to handle by single chip circuit to protective circuit, realized protection motor of oil extractor; Realized the automatic protection function by the entire circuit device.
(4) description of drawings
Fig. 1 is the annexation principle schematic of each several part circuit of the present invention
Fig. 2 is a physical circuit schematic diagram of the present invention
Fig. 3 is the software work theory diagram of single chip circuit
Each arrow mark is described as follows among Fig. 1: circuitry phase, [7] drive circuit, [8] single chip circuit are surveyed in [1] current sampling circuit, [2] voltage sample circuit, [3] shaping circuit, [4] phase sequence circuit, [5] protective circuit, [6].
Each arrow mark and each arrow target of Fig. 1 illustrate identically among Fig. 2, and the itemized bill of each electronic devices and components is as follows among Fig. 2:
| The design number | Specifications and models | The design number | Specifications and models | The design number | Specifications and models |
| ?C17 | ?100uf16V | ?C16、 | ?104p | ?C19 | ?104p |
| ?C18 | ?33uf | ?C20 | ?10uf16V | ?R27 | ?10KΩ |
| ?D5 | ?1N4007 | ?C1 | ?4.7uf16V | ?R11 | ?27K |
| ?D4 | ?1N4007 | ?C3 | ?4.7uf16V | ?R12 | ?27K |
| ?D6 | ?1N4007 | ?C5 | ?4.7uf16V | ?R14 | ?27K |
| ?D10 | ?1N4007 | ?C7 | ?4.7uf16V | ?IC2 | ?4093 |
| ?D3 | ?1N4007 | ?C9 | ?22p | ?RP1 | ?5PIN |
| ?D1 | ?1N4007 | ?C10 | ?22p | ?CY1 | ?6MHz |
| ?D9 | ?1N4007 | ?R8 | ?270Ω | ?DW1 | ?6V1W |
| ?D2 | ?1N4007 | ?R5 | ?270Ω | ?U1 | ?74LS74 |
| ?RP7 | ?8PIN | ?IC6 | ?ATg9C2051 | ?D7 | ?FR1007 |
| ?IC1 | ?LM124 | ?IC7 | ?MC1413 | ?D8 | ?FR1007 |
| ?IC3 | ?LM124 | ?IC5 | ?TLP521-4 | ?D11 | ?FR1007 |
| ?RW1、 | ?10KΩ | ?IT1 | ?20/7V | ||
| ?RW2 | ?10KΩ | ?IT2 | ?20/7V |
Fig. 3 is the software work functional-block diagram of single chip circuit, with circuit hardware device cooperating.
(5) embodiment
Below with reference to above-mentioned accompanying drawing,, patent of the present invention is further described for embodiment.
Fig. 1 provides a preferred embodiment, and A, B, C are three-phase alternating-current supply, and K1 is an air switch, and CT1, CT2 are A, C phase current mutual inductor, and CJ is the contact and the coil of A.C. contactor, and M is a motor.Current sampling circuit [1] obtains sampled signal by CT1, CT2, and voltage sample circuit [2] obtains sampled signal by A, B, C three phase mains.The annexation of concrete each several part circuit is: between a kind of oil pumper motor knock off do mode automatic protection device by single chip circuit, sample circuit, shaping circuit, phase sequence circuit, survey circuitry phase, protective circuit, drive circuit and form, it is characterized in that current sampling circuit [1], voltage sample circuit [2] are connected with shaping circuit [3], voltage sample circuit [2] is connected with phase sequence circuit [4], shaping circuit [3] is connected with survey circuitry phase [6] with phase sequence circuit [4], surveys circuitry phase [6] and is connected with the single chip circuit that computer software is housed [8]; Current sampling circuit [1], voltage sample circuit [2] also are connected with protective circuit [5], and protective circuit [5] is connected with the single chip circuit that computer software is housed [8]; The single chip circuit [8] that computer software is housed carries out analyzing and processing to the protective circuit [5] and the signal of sending into of surveying circuitry phase [6], and provides signal, sends into coupled drive circuit [7].
Motor of pumping unit in intermittent working method automatic protection device current sampling circuit [1] is connected with two current transformer CT1, CT2, it is characterized in that two current transformer CT1 and CT2 are connected to A, C mutually on the power line.
The circuit diagram that the physical circuit of each several part circuit provides by Fig. 2 is implemented to connect.
It is as follows to tell about the device course of work in conjunction with scm software operation principle block diagram: after powering on, and the device energized, the each several part circuit enters initial condition, and scm software presets primary data and carries out initialization.Judgement is the startup once more under starting state or under the stopped status.If under the stopped status, then enter and shut down the maintenance cyclic program; Continue to keep stopped status, do to shut down counting, judge whether downtime is enough, moves, and waits for the arrival of downtime in this program cycle.If open under the machine state, then actuating motor enters the startup working procedure.Start in the working procedure at this, at first measure current sampling circuit [1] guard signal that sampling is sent into by the protective circuit [5] that is connected with voltage sample circuit [2], protect judgement, if should protect, caution is shut down in outage immediately; If normal condition, detect current sampling circuit [1] and send into the signal that the survey circuitry phase [6] that is connected is sent into single chip circuit [8] again by the shaping circuit [3] that is connected with phase sequence circuit [4] with voltage sample circuit [2] sampling, mainly be that power factor is detected, the time of doing adds up, and judges whether power factor is low again; If not low, continue to enter measurement, the parameter of measuring is protected judgement, in this program cycle, move, motor works on.If power factor is low, then leave the startup working procedure, revise downtime, shut down counter O reset, the shutdown mark is set, and shuts down.Enter shutdown and keep cyclic program, shut down the counting beginning, judgement is enough denied downtime.Time continues to shut down counting when not enough, waits for that motor quits work in this program.Open machine counter O reset when enough downtime, is provided with and opens the machine sign, and motor start-up, motor enter the operating state cyclic program.
Reached the purpose of motor of pumping unit in intermittent work mode automatic protection by above-mentioned hardware and cooperating of software.
Claims (2)
1, a kind of motor of pumping unit in intermittent working method automatic protection device is made up of single chip circuit, sample circuit, shaping circuit, phase sequence circuit, survey circuitry phase, protective circuit, drive circuit, it is characterized in that current sampling circuit [1], voltage sample circuit [2] are connected with shaping circuit [3], voltage sample circuit [2] is connected with phase sequence circuit [4], shaping circuit [3] is connected with survey circuitry phase [6] with phase sequence circuit [4], surveys circuitry phase [6] and is connected with the single chip circuit that computer software is housed [8]; Current sampling circuit [1], voltage sample circuit [2] also are connected with protective circuit [5], and protective circuit [5] is connected with the single chip circuit that computer software is housed [8]; The single chip circuit [8] that computer software is housed carries out analyzing and processing to the protective circuit [5] and the signal of sending into of surveying circuitry phase [6], and provides signal, sends into coupled drive circuit [7].
2, a kind of motor of pumping unit in intermittent working method automatic protection device as claimed in claim 1; current sampling circuit [1] is connected with two current transformer CT1, CT2, it is characterized in that two current transformer CT1 and CT2 are connected to A, C mutually on the power line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01135854A CN1417914A (en) | 2001-10-31 | 2001-10-31 | Automatic control protector for motor of pumping unit in intermittent work mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01135854A CN1417914A (en) | 2001-10-31 | 2001-10-31 | Automatic control protector for motor of pumping unit in intermittent work mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1417914A true CN1417914A (en) | 2003-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01135854A Pending CN1417914A (en) | 2001-10-31 | 2001-10-31 | Automatic control protector for motor of pumping unit in intermittent work mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1417914A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664387A (en) * | 2012-05-16 | 2012-09-12 | 天水二一三电器有限公司 | Three-phase asynchronous motor phase sequence protector and protection method |
| CN110426550A (en) * | 2019-08-16 | 2019-11-08 | 北京机械设备研究所 | A kind of high-power electric steering engine overcurrent protection signal high speed generating means and method |
| CN113445968A (en) * | 2020-03-25 | 2021-09-28 | 中国石油天然气股份有限公司 | Oil pumping unit control method and system |
-
2001
- 2001-10-31 CN CN01135854A patent/CN1417914A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664387A (en) * | 2012-05-16 | 2012-09-12 | 天水二一三电器有限公司 | Three-phase asynchronous motor phase sequence protector and protection method |
| CN102664387B (en) * | 2012-05-16 | 2014-08-27 | 天水二一三电器有限公司 | Three-phase asynchronous motor phase sequence protection method |
| CN110426550A (en) * | 2019-08-16 | 2019-11-08 | 北京机械设备研究所 | A kind of high-power electric steering engine overcurrent protection signal high speed generating means and method |
| CN113445968A (en) * | 2020-03-25 | 2021-09-28 | 中国石油天然气股份有限公司 | Oil pumping unit control method and system |
| CN113445968B (en) * | 2020-03-25 | 2023-06-30 | 中国石油天然气股份有限公司 | Pumping unit control method and system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |