CN104632597A - Oil pumping control device and control method of oil well pump - Google Patents
Oil pumping control device and control method of oil well pump Download PDFInfo
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- CN104632597A CN104632597A CN201310566055.4A CN201310566055A CN104632597A CN 104632597 A CN104632597 A CN 104632597A CN 201310566055 A CN201310566055 A CN 201310566055A CN 104632597 A CN104632597 A CN 104632597A
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Abstract
The invention relates to the technical field of automatic control, and discloses an oil pumping control device of an oil well pump. The oil pumping control device comprises an oil well pump motor, a motor driving unit, a current detecting unit, a single chip microcomputer and a motion control unit. The current detecting unit is connected with the motor driving unit and the single chip microcomputer, the motion control unit is connected with the motor drive unit and the single chip microcomputer, the current detecting unit is used for detecting the real-time current of the oil well pump motor and transmitting current parameters to the single chip microcomputer, the single microcomputer compares the current parameters with the preset value, and judges the real-time working state of the oil well pump, and the single chip microcomputer drives the motion control unit to control the motor driving unit according to the different working states of the oil well pump, and the oil well pump is in the proper working state. Various working states of the oil well pump are correctly judged by detecting the real-time current value of the oil well pump; due to automatic treatment of the single chip microcomputer, improper use is effectively reduced, and the service life of the oil well pump is prolonged.
Description
Technical field
The present invention relates to automatic control technology field, particularly relate to a kind of oil well pump oil pumping control gear and controlling method.
Background technique
Oil well pump, in oil pumping process, generally can encounter following state: (1) oil drum has oil and pipeline is unobstructed, normally pumps; (2) oil drum is empty bucket; (3) oil drum has oil, but pipeline blockage; (4) oil of oil drum is low level and is exhausted, etc.And existing oil well pump control system, generally just control power switch by liquid-level switch, realizing oil drum has during oil condition and normally pumps, and does not have oil condition to be the function of shutting down.
The liquid-level switch of existing oil well pump system is installed and maintenance inconvenience, and structure function is single, cannot judge pipeline blockage, easily causes the security incident that motor coil burns.
Summary of the invention
The object of the invention is to solve the problem, a kind of oil well pump oil pumping control gear and controlling method being provided, by automatic control, realizing the disposal of the correct judgement to various oil pumping state.
The technological scheme that the present invention takes is:
A kind of oil well pump oil pumping control gear, comprise oil well pump motor, electric-motor drive unit, described electric-motor drive unit drives described oil well pump machine operation, it is characterized in that, described control gear also comprises current detecting unit, single-chip microcomputer and action control unit, described current detecting unit is connected with described electric-motor drive unit and single-chip microcomputer, described action control unit is connected with described electric-motor drive unit and single-chip microcomputer, described current detecting unit is for detecting the real-time current of oil well pump motor and current parameters being sent to described single-chip microcomputer, described current parameters and predefined value contrast by described single-chip microcomputer, judge the instantaneous operating conditions of oil well pump, described single-chip microcomputer is according to the different operating state of oil well pump, described action control unit is driven to control described electric-motor drive unit, described oil well pump is made to be in suitable working state.
Further, described current detecting unit comprises the accurate low resistance with the circuit connected in series of described electric-motor drive unit, and described current detecting unit detects the voltage of described accurate low resistance, exports described single-chip microcomputer to after calculating current parameters.
Further, the value of described accurate low resistance is 0.5 ohm.
Further, described current detection circuit carried out primary current detection every 0.5 to 1 second to described oil well pump motor.
A controlling method for oil well pump oil pumping control gear as above, comprises the steps:
The first step: described current detecting unit detects the real-time current of described oil well pump motor and is sent to described single-chip microcomputer in certain time interval;
Second step: the current parameters received and predefined value contrast by described single-chip microcomputer, judges the instantaneous operating conditions of oil well pump;
3rd step: when the working state of described oil well pump is oil drum sky, enter the 4th step; When the working state of described oil well pump is pipeline blockage, enter the 5th step; When the working state of described oil well pump be oil drum just find time time, enter the 4th step; When the working state of described oil well pump is for normally pumping, enter the first step;
4th step: described action control unit controls to close described oil well pump motor, changes oil drum, reopens described oil well pump motor, return the first step;
5th step: described action control unit controls to close described oil well pump motor, maintenance pipeline.
Further, current threshold when current threshold, the high capacity of oil well pump motor when current threshold, oil well pump motor standard load when predefined value in described second step comprises oil well pump empty load of motor, when described single-chip microcomputer is equal with current threshold during described oil well pump empty load of motor by the current parameters that receives, be judged as oil drum dummy status; When described single-chip microcomputer is equal with current threshold during described oil well pump motor standard load by the current parameters that receives, be judged as normal oil pumping state; When the current parameters received is greater than described oil well pump motor high capacity by described single-chip microcomputer during current threshold, be judged as pipeline blockage state; When described single-chip microcomputer by the current parameters received with drop to zero load from current threshold during described oil well pump motor standard load at short notice time current threshold time, be judged as the firm evacuated of oil drum.
Further, the described time lag is 0.5 to 1 second.
The invention has the beneficial effects as follows:
(1) by detecting the real-time current value of oil well pump motor, the various working staties of oil well pump are correctly judged;
(2) single-chip microcomputer automatic business processing, effectively reduces improper use, extends the working life of oil well pump.
Accompanying drawing explanation
Accompanying drawing 1 is the module frame chart of device in the present invention;
Accompanying drawing 2 is the FB(flow block) of method in the present invention.
Label in accompanying drawing is:
1. oil well pump motor; 2. electric-motor drive unit;
3. current detecting unit; 4. single-chip microcomputer;
5. action control unit; S01-S08. FB(flow block) serial number.
Embodiment
Elaborate below in conjunction with the embodiment of accompanying drawing to oil well pump oil pumping control gear of the present invention and controlling method.
See accompanying drawing 1, oil well pump oil pumping control gear comprises oil well pump motor 1, electric-motor drive unit 2, current detecting unit 3, single-chip microcomputer 4 and action control unit 5, electric-motor drive unit 2 works for driving oil well pump motor 1, current detecting unit 3 is connected with electric-motor drive unit 2 and single-chip microcomputer 4, action control unit 5 is connected with electric-motor drive unit 2 and single-chip microcomputer 4, current detecting unit 3 is for detecting the real-time current of oil well pump motor 1 and current parameters being sent to single-chip microcomputer 4, current parameters and predefined value contrast by single-chip microcomputer 4, judge the instantaneous operating conditions of oil well pump, single-chip microcomputer 4 is according to the different operating state of oil well pump, drive actions control unit 5 controls electric-motor drive unit 2, electric-motor drive unit 2 controls motor and is in different working staties, oil well pump is made to be in suitable working state.
Current detecting unit 3 realizes current detecting by serial connection to an accurate low resistance in the circuit of electric-motor drive unit 2, accurate low resistance resistance preferably 0.5 ohm, current detecting unit 3 measures the both end voltage obtaining accurate low resistance, obtain the current value of oil well pump motor 1 as calculated afterwards, be sent to single-chip microcomputer 4 and carry out analysing and processing.Current detecting unit 3 is tested the voltage of accurate low resistance within shorter time lag, to realize the real-time current value of real-time collecting oil well pump motor 1, under making oil well pump be operated in controllable state, this time lag is generally set to 0.5 to 1 second always.
See accompanying drawing 2, for above-mentioned oil well pump oil pumping control gear, realize its controlling method, following steps be passed through:
The first step: current detecting unit detects the real-time current of oil well pump motor and is sent to single-chip microcomputer (in figure step S01) in certain time interval.This time lag is enough little, in the enough little time lag, supposes to break down, and is also unlikely to that accidents happened, and therefore, this time lag is generally set to 0.5 to 1 second.
Second step: the current parameters received and predefined value contrast by single-chip microcomputer, judges the instantaneous operating conditions (in figure step S02) of oil well pump.
Working state is mainly divided into the normal oil pumping state of oil drum dummy status, pipeline blockage state, the firm evacuated of oil drum etc.Current threshold etc. when current threshold, the high capacity of oil well pump motor when current threshold, oil well pump motor standard load when the predefined value of single-chip microcomputer comprises oil well pump empty load of motor, when single-chip microcomputer is equal with current threshold during oil well pump empty load of motor or substantially equal by the current parameters that receives, oil drum dummy status (in figure S03) can be judged as; When single-chip microcomputer is equal or substantially equal with current threshold during oil well pump motor standard load by the current parameters that receives, normal oil pumping state (in figure S04) can be judged as; When the current parameters received is greater than the high capacity of oil well pump motor by single-chip microcomputer during current threshold, pipeline blockage state (in figure S05) can be judged as; When single-chip microcomputer by the current parameters received and when dropping to zero load at short notice near current threshold during oil well pump motor standard load near current threshold time, the firm evacuated of oil drum (in figure S06) can be judged as.
3rd step: when the working state of oil well pump is oil drum sky, enter the 4th step; When the working state of oil well pump is pipeline blockage, enter the 5th step; When the working state of oil well pump be oil drum just find time time, enter the 4th step; When the working state of oil well pump is for normally pumping, enter the first step;
4th step: action control unit controls to close oil well pump motor, changes oil drum, reopens oil well pump motor, return the first step (in figure step S07).
5th step: action control unit controls to close oil well pump motor, maintenance pipeline (in figure step S08).Pipeline overhauls and after fixing a breakdown, just re-starts the first step and realize loop control.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. an oil well pump oil pumping control gear, comprise oil well pump motor, electric-motor drive unit, described electric-motor drive unit drives described oil well pump machine operation, it is characterized in that: described control gear also comprises current detecting unit, single-chip microcomputer and action control unit, described current detecting unit is connected with described electric-motor drive unit and single-chip microcomputer, described action control unit is connected with described electric-motor drive unit and single-chip microcomputer, described current detecting unit is for detecting the real-time current of oil well pump motor and current parameters being sent to described single-chip microcomputer, described current parameters and predefined value contrast by described single-chip microcomputer, judge the instantaneous operating conditions of oil well pump, described single-chip microcomputer is according to the different operating state of oil well pump, described action control unit is driven to control described electric-motor drive unit, described oil well pump is made to be in suitable working state.
2. oil well pump oil pumping control gear according to claim 1, it is characterized in that: described current detecting unit comprises the accurate low resistance with the circuit connected in series of described electric-motor drive unit, described current detecting unit detects the voltage of described accurate low resistance, exports described single-chip microcomputer to after calculating current parameters.
3. oil well pump oil pumping control gear according to claim 1, is characterized in that: the value of described accurate low resistance is 0.5 ohm.
4. oil well pump oil pumping control gear according to any one of claim 1 to 3, is characterized in that: described current detection circuit carried out primary current detection every 0.5 to 1 second to described oil well pump motor.
5. a controlling method for oil well pump oil pumping control gear as claimed in claim 1, comprises the steps:
The first step: described current detecting unit detects the real-time current of described oil well pump motor and is sent to described single-chip microcomputer in certain time interval;
Second step: the current parameters received and predefined value contrast by described single-chip microcomputer, judges the instantaneous operating conditions of oil well pump;
3rd step: when the working state of described oil well pump is oil drum sky, enter the 4th step; When the working state of described oil well pump is pipeline blockage, enter the 5th step; When the working state of described oil well pump be oil drum just find time time, enter the 4th step; When the working state of described oil well pump is for normally pumping, enter the first step;
4th step: described action control unit controls to close described oil well pump motor, changes oil drum, reopens described oil well pump motor, return the first step;
5th step: described action control unit controls to close described oil well pump motor, maintenance pipeline.
6. controlling method according to claim 5, it is characterized in that: current threshold when current threshold, the high capacity of oil well pump motor when current threshold, oil well pump motor standard load when the predefined value in described second step comprises oil well pump empty load of motor, when described single-chip microcomputer is equal with current threshold during described oil well pump empty load of motor by the current parameters that receives, be judged as oil drum dummy status; When described single-chip microcomputer is equal with current threshold during described oil well pump motor standard load by the current parameters that receives, be judged as normal oil pumping state, when the current parameters received is greater than described oil well pump motor high capacity by described single-chip microcomputer during current threshold, be judged as pipeline blockage state; When described single-chip microcomputer by the current parameters received with drop to zero load from current threshold during described oil well pump motor standard load at short notice time current threshold time, be judged as the firm evacuated of oil drum.
7. the controlling method according to claim 5 or 6, is characterized in that: the described time lag is 0.5 to 1 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310566055.4A CN104632597A (en) | 2013-11-13 | 2013-11-13 | Oil pumping control device and control method of oil well pump |
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| CN201310566055.4A CN104632597A (en) | 2013-11-13 | 2013-11-13 | Oil pumping control device and control method of oil well pump |
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Cited By (7)
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| CN106224220A (en) * | 2016-08-19 | 2016-12-14 | 郑州宇通客车股份有限公司 | A kind of electric compressor self adaptation halt control method and device |
| US20170077863A1 (en) * | 2015-09-15 | 2017-03-16 | Regal Beloit America, Inc. | System and method for determining a condition of a fluid flow path |
| CN108143001A (en) * | 2017-12-05 | 2018-06-12 | 深圳市新宜康电子技术有限公司 | A kind of adaptive tobacco tar control method |
| CN110584449A (en) * | 2018-06-13 | 2019-12-20 | 佛山市顺德区美的电热电器制造有限公司 | Operation control method, device, cooking appliance and computer readable storage medium |
| CN110870661A (en) * | 2018-08-31 | 2020-03-10 | 佛山市顺德区美的电热电器制造有限公司 | Fan operation control method and device, fan, cooking appliance and storage medium |
| CN110949496A (en) * | 2019-11-15 | 2020-04-03 | 江苏大学 | Double-oil-pump type hybrid electric control steering system and control method thereof |
| CN113325759A (en) * | 2021-05-24 | 2021-08-31 | 永嘉一本机械有限公司 | Intelligent control device and method for state of oil pump of fuel filling machine |
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| CN110949496A (en) * | 2019-11-15 | 2020-04-03 | 江苏大学 | Double-oil-pump type hybrid electric control steering system and control method thereof |
| CN110949496B (en) * | 2019-11-15 | 2021-06-18 | 江苏大学 | Double-oil-pump type hybrid electric control steering system and control method thereof |
| CN113325759A (en) * | 2021-05-24 | 2021-08-31 | 永嘉一本机械有限公司 | Intelligent control device and method for state of oil pump of fuel filling machine |
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Application publication date: 20150520 |