CN1355384A - Control method for automatic balance regulation of pumping unit - Google Patents
Control method for automatic balance regulation of pumping unit Download PDFInfo
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- CN1355384A CN1355384A CN 00133610 CN00133610A CN1355384A CN 1355384 A CN1355384 A CN 1355384A CN 00133610 CN00133610 CN 00133610 CN 00133610 A CN00133610 A CN 00133610A CN 1355384 A CN1355384 A CN 1355384A
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- load
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- pumping unit
- backhaul
- journey
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Abstract
An automatic regulation-control method for the balance of pumping unit features that the suspending-point load sensor and counter weight load sensor are used to measure their load values, the current sensor, load sensor and coded position sensor are used to input the dynamic variations of current and load for the sucking and return strokes to a computer to calculate the effective and the reactive powers and perform the automatic control. It can reduce the electric consumption and increase the effective power of pumping unit.
Description
The present invention relates to a kind of oil pumping unit autocontrol method.
The tradition pumping unit adopts the walking beam mode, front-located mode or rear-mounted driving operation.Owing to be the operation of crank drivening rod, can't freely change the counterweight amount, bigger during the unbalanced force operation so the constantly acting load equilibrium ratio is very bad, the waste electric energy causes the operation of pumping unit bigger power dissipation to be arranged in the operation of self.Oil recovery power obviously reduces.The dynamic load that produces during operation also can't be calculated and balance.
The oil pumping unit operation mainly contains two kinds of load, static load and dynamic loads.Static load comprises: the rod string gravitational load acts on the fluid column load on the piston.Static load is a constantly acting load, can reach 100% balance by the assembling (counterweight) of oil pumping unit.Dynamic load comprises: the not constantly acting load that inertial load, frrction load, oscillating load etc., dynamic load produce when being the oil pumping unit operation, the dynamic effects factor is very many.The method of operation that comprises oil pumping unit itself, balance mode, hole condition, oil reservoir situation, the free vibration of deep-well pump and forced vibration of oil pumping unit or the like.The tradition pumping unit is owing to the concrete parameter that can't calculate dynamic load, so ignore substantially on LOAD FOR.
The object of the present invention is to provide a kind ofly, adjust oil pumping unit dynamic operation equilibrium ratio, improve the control method for automatic balance regulation of the oil pumping unit of the big load operation ability of oil pumping unit according to dynamic load.
Method of the present invention is as follows:
(1) utilization is installed in the polished rod load sensor on the rope hanger, the counterweight load transducer that is installed on the counterweight case provides polished rod load, counterweight load value and the equilibrium ratio between them to computer;
(2) utilization is installed on the staggering amount variable frequency drives, and the current sensor that is connected with motor, when measuring the oil pumping unit run with load, polished rod load and counterweight load power consumption numerical value and the current balance type between them when taking out journey, backhaul alternate run is poor, and offers computer;
(3) utilize the position transducer that is installed on the live axle end face, stroke distance values when programmable controller carries oil pumping unit to take out journey, backhaul alternate run;
(4) above-mentioned current sensor, load transducer, when moving oil pumping unit, takes out by position transducer journey, the dynamic current of backhaul, the variation numerical value of dynamic load on the stroke distance and position is imported computer automatically, calculate active power by computer, wattless power, equilibrium ratio, computer by adjust stroking distance from, take out Cheng Sudu on the stroke diverse location point, opening speed, the inertial load that produces when making the oil pumping unit operation, oscillating load, frrction load is carried out the transient equiliblium adjustment between maximum polished rod load and minimum loading, keep the balance coefficient of depositing of oil pumping unit dynamic operation to be in optimal values.
Computer passes through programmable controller, drive frequency variator and change motor motion speed or range ability: by adjustment take out Cheng Sudu and stroking distance from, and take out speed on the journey diverse location point, cause taking out journey inertial load value, frrction load value, the change of oscillating load value, make and on average take out the change of journey load value; By adjust opening speed and stroking distance from, and the speed on the backhaul diverse location point causes backhaul inertial load value, frrction load value, the change of oscillating load value, makes average backhaul load value change; Below on average take out the change of journey load value, average backhaul lotus lotus value, cause the change of dynamic equilibrium ratio; By adjustment take out Cheng Sudu and stroking distance from, and take out speed on the journey diverse location point, cause taking out journey inertial load current value, frrction load current value, oscillating load current value change, make and on average take out journey load current value and change; By adjust opening speed and stroking distance from, and the speed on the backhaul diverse location point causes backhaul inertial load current value, frrction load current value, oscillating load current value change, makes average backhaul load current value change; Above-mentioned change of on average taking out journey load current value and average backhaul load current value changes the consecutive mean power ratio.
When the present invention can move oil pumping unit work, balance coefficient calculated automatically, analyzed, discerns, adjusts, controlled, and had satisfied the requirement of transient equiliblium coefficient when different well ' s conditions recovers the oil to oil pumping unit.Reduce the oil pumping unit power consumption in when operation effectively,, improve the active power of oil pumping unit to greatest extent, reduce wattless power, reach oil pumping unit energy-conservation, purpose efficiently in service according to the power requirements of different well ' s conditions to oil pumping unit.
The drawing explanation:
Fig. 1 is that balance of the present invention is adjusted control principle figure.
In the accompanying drawing: the 1st, back supporting roller, the 2nd, motor, the 3rd, speed reducer, the 4th, preceding supporting roller, the 5th, the coding site sensor, the 6th, belt, the 7th, the counterweight stroke distances, the 8th, rope hanger, the 9th, oil drag power, the 10th, take out journey, the 11st, the oil pumping unit stroking distance from, the 12nd, variable frequency drives, the 13rd, programmable controller, the 14th, backhaul, the 15th, display device, the 16th, weight of oil in the oil pipe, the 17th, printer, the 18th, power supply, the 19th, the counterweight case, the 20th, rod weight, the 21st, oil well pump, the 22nd, piston weight, the 23rd, liquid level buoyancy, the 24th, backhaul, the 25th, the pump stroke distance, the 26th, at the bottom of the pump, the 27th, take out journey, the 28th, the counterweight load transducer, the 29th, the polished rod load sensor, the 30th, current sensor, the 31st, computer.
This method adopts: (1) polished rod load sensor (29) is installed on the rope hanger (8), is connected computer (31).Counterweight load transducer (28) is installed on the counterweight case (19), is connected computer (31).Display device (15) shows polished rod load (29) counterweight load (28) and equilibrium ratio between them automatically after connecting power supply (18).Their motion mode is that motor (2) drives speed reducer (3) and drives the driving wheel rotation, driving wheel by belt (6), preceding supporting roller (4) drive rope hanger (8), rod string (20), piston (22) take out journey (27) (on), backhaul (24) (descending) to-and-fro motion.Driving wheel carries out upper and lower to-and-fro motion (doing the opposite direction balance exercise with rope hanger) by belt (32), back supporting roller (1) drive counterweight case (19) simultaneously.Point suspension movement distance (oil pumping unit stroking distance from) (11) and counterweight stroke (7) are apart from equating.
Must assemble according to weight ratio when oil pumping unit is installed, make polished rod load and counterweight load (during shutdown) reach static equilibrium (polished rod load value/counterweight load value=static balancing ratio).And on display device (15), demonstrate balance numerical value, equilibrium ratio.
(stopping) static equilibrium formula of oil pumping unit: counterweight load (19)=rod string load (20)+piston load (22)
(journey is taken out in operation) of oil pumping unit be formula dynamically: oil column load (16) in counterweight load (19)≤rod string load (20)+piston load (22)+oil pipe+frrction load (9)+inertial load+oscillating load
(the operation backhaul) of oil pumping unit be formula dynamically: counterweight load (19) 〉=rod string load (20)+piston load (22)-rod string and oil column frrction load (9)-fluid buoyancy (23)+inertial load-oscillating load
On average take out journey load value/average backhaul load value=dynamic equilibrium ratio
On average take out journey electric current/average backhaul electric current=consecutive mean power ratio
(2) current sensor (30) is installed on the vector converter driver, is connected with motor (2).During the oil pumping unit run with load, power consumption numerical value and plotted curve and the current balance type between them were poor when display device (15) showed suspension point (29) load and counterweight (28) load alternate run automatically.
(3) position transducer is installed on the live axle end face, be connected with programmable controller (13), oil pumping unit (1) when operation, display device (15) show automatically take out journey (27) (on), during backhaul (24) (descending) alternate run stroking distance from the numerical value location point.
Current sensor (30), load transducer (28,29), position encoded sensor (5) are taken out dynamic current, the variation numerical value of dynamic load on the stroke distance and position of journey (10), backhaul (14) and are imported computer automatically when oil pumping unit is moved, through storing, handle, calculate automatically oil pumping unit active power, wattless power, effective current, idle current, active balance coefficient.And be presented on the display device (15).According to the requirement of specific well conditions and subsurface deposit situation to the oil pumping unit balance coefficient, computer by adjust stroking distance from, take out Cheng Sudu, opening speed on the stroke diverse location point.The inertial load that produces when making the oil pumping unit operation, oscillating load, frrction load (general designation dynamic load) are carried out the transient equiliblium adjustment at maximum polished rod load and minimum carrying between what, make the active balance coefficient of oil pumping unit dynamic operation be in optimal values.Because the raising of transient equiliblium coefficient, make electric current obtain balance, useful horsepower is improved.Reduce the power consumption of oil pumping unit operation effectively, improve the useful horsepower of oil pumping unit.And can by printer (17) service data and graphic printing be come out as required.
Automatically it is as follows to adjust controlling method:
Oil pumping unit emerged in operation imbalance, computer are carried out the problem Classification and Identification according to the dynamic balancing simulation model and are sent and adjust instruction, and programmable controller drives frequency variator and changes motor motion speed or range ability then according to the instruction of computer.
By adjustment take out Cheng Sudu and stroking distance from, and take out speed on the journey diverse location point → cause taking out journey inertial load value, frrction load value, oscillating load value and change; The change of inertial load, frrction load, shock loads makes and on average takes out the change of journey load value; On average take out the journey load value and change → cause the change of dynamic equilibrium ratio.
By adjusting opening speed and stroking distance from, and the speed on the backhaul diverse location point → cause backhaul inertial load value, frrction load value, the change of oscillating load value; The change of inertial load, frrction load, shock loads changes average backhaul load value; Average backhaul load value changes → causes the change of dynamic equilibrium ratio.
By adjustment take out Cheng Sudu and stroking distance from, and take out speed on the journey diverse location point → cause taking out journey inertial load current value, frrction load current value change; The oscillating load current value changes the master; The change of inertial load, frrction load, shock loads makes and on average takes out the change of journey load current value; On average take out journey load current value and change → cause the change of dynamic power ratio.
By adjust opening speed and stroking distance from, reach speed on the backhaul diverse location point → cause backhaul inertial load current value, frrction load current value change; The oscillating load current value change; The change of inertial load, frrction load, shock loads changes average backhaul load current value; Average backhaul load current value changes → causes the change of dynamic power ratio.
Operating procedure is as follows:
1. start power supply.
2. the assembled in situ oil pumping unit makes counterweight load and polished rod load balance.
3. start the oil pumping unit operation, detect on the oil pumping unit display device, the concrete transient equiliblium of polished rod load during the oil pumping unit dynamic operation and counterweight load changes numerical value.
4. whether in the reasonable scope to detect the oil pumping unit dynamic equilibrium ratio.
5. poor according to the transient equiliblium of Computer Analysis, calculating, start and adjust the variation that Automatic Program is adjusted maximum, minimum loading.Reach best operating point until dynamic load, dynamic current, transient equiliblium.This dynamic current curve values, load line value promptly are this oil pumping unit optimum operation equinoctial points.
6. this balance point value is stored at computer, this point promptly is the numerical code in a basic balance of oil pumping unit.
7. adopt mode identification method that the transient equiliblium numerical code is carried out signature analysis, fuzzy, emulation.
8. should numerical code in a basic balance enroll adaptive control system, and make oil pumping unit in dynamic operation, seek the optimum balance numerical code automatically.
9. oil pumping unit operates in the oil recovery running on the optimal balance point all the time according to the instruction of control system, on the best power consumption point, realizes optimum operation power.
10. oil pumping unit enters the self adaptive control program, best normal operating condition.
Relation between load and speed and stroke distances and the electric current:
Be expressed as a physics constant.
Speed strengthens, and gravity accleration increases.
Load strengthens, and gravity accleration increases.
The distance lengthening, gravity accleration increases.Otherwise:
Speed reduces, and gravity accleration reduces.
Load reduces, and gravity accleration reduces.
Distance reduces, and gravity accleration reduces.
Dynamic equilibrium ratio is the performance load ratio, and optimum range numerical value is: (polished rod load (moving)-static polished rod load)/(counterweight load-static polished rod load) ≈ 1/2, (optimal values) optimum range is: between 0～1 to the 1/2 trend scope of approaching.
The consecutive mean power ratio is the running current ratio, and optimum range numerical value is:
Taking out journey average current=backhaul average current, is 100%, (optimal values)
Optimum range is: 0.8≤1≤1.2, and to the 1 trend scope of approaching.
Claims (2)
1. the control method for automatic balance regulation of an oil pumping unit is characterized in that:
(1) utilization is installed in the polished rod load sensor on the rope hanger, the counterweight load transducer that is installed on the counterweight case provides polished rod load, counterweight load value and the equilibrium ratio between them to computer;
(2) utilization is installed on the vector converter driver, and the current sensor that is connected with motor, when measuring the oil pumping unit run with load, polished rod load and counterweight load power consumption numerical value and the current balance type between them when taking out journey, backhaul alternate run is poor, and offers computer;
(3) utilize the position transducer that is installed on the live axle end face, stroke distance values when programmable controller carries oil pumping unit to take out journey, backhaul alternate run;
(4) above-mentioned current sensor, load transducer, when moving oil pumping unit, takes out by position transducer journey, the dynamic current of backhaul, the variation numerical value input computer of dynamic load on the stroke distance and position, calculate active power by computer, wattless power, equilibrium ratio, computer by adjust stroking distance from, take out Cheng Sudu on the stroke diverse location point, opening speed, the inertial load that produces when making the oil pumping unit operation, oscillating load, frrction load is carried out the transient equiliblium adjustment between maximum polished rod load and minimum loading, keep the equilibrium ratio coefficient of oil pumping unit dynamic operation to be in optimal values.
2. the balance auto-control system method of a kind of oil pumping unit as claimed in claim 1 is characterized in that: computer drives frequency variator and changes motor motion speed or range ability by programmable controller; By adjustment take out Cheng Sudu and stroking distance from, and take out speed on the journey diverse location point, cause taking out journey inertial load value, frrction load value, oscillating load value and change, make and on average take out the journey load value and change; By adjust opening speed and stroking distance from, and the speed on the backhaul diverse location point causes backhaul inertial load value, frrction load value, the change of oscillating load value, makes average backhaul load value change; Below on average take out the change of journey load value, average backhaul lotus lotus value, cause the change of dynamic equilibrium ratio; By adjustment take out Cheng Sudu and stroking distance from, and take out speed on the journey diverse location point, cause taking out journey inertial load current value, frrction load current value, oscillating load current value change, make and on average take out journey load current value and change; By adjust opening speed and stroking distance from, and the speed on the backhaul diverse location point causes backhaul inertial load current value, frrction load current value, oscillating load current value change, makes average backhaul load current value change; Above-mentioned change of on average taking out journey load current value and average backhaul load current value changes the consecutive mean power ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00133610 CN1200198C (en) | 2000-11-29 | 2000-11-29 | Control method for automatic balance regulation of pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00133610 CN1200198C (en) | 2000-11-29 | 2000-11-29 | Control method for automatic balance regulation of pumping unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1355384A true CN1355384A (en) | 2002-06-26 |
| CN1200198C CN1200198C (en) | 2005-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00133610 Expired - Fee Related CN1200198C (en) | 2000-11-29 | 2000-11-29 | Control method for automatic balance regulation of pumping unit |
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| Country | Link |
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| CN (1) | CN1200198C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216215A (en) * | 2012-08-21 | 2013-07-24 | 东营胜利高原有限公司 | Intelligent control system of pumping unit |
| CN103994173A (en) * | 2013-02-20 | 2014-08-20 | 大庆国电海天科技有限公司 | Method for remotely automatically adjusting oil well random-load balance |
| CN104793655A (en) * | 2015-02-12 | 2015-07-22 | 大庆市华禹石油机械制造有限公司 | Integrated permanent magnet stepless speed regulating device of oil pumping unit |
| CN112327943A (en) * | 2020-11-10 | 2021-02-05 | 中国科学院长春光学精密机械与物理研究所 | Method and system for positioning azimuth axis and calculating counterweight of airborne photoelectric platform of heavy-weight motor |
-
2000
- 2000-11-29 CN CN 00133610 patent/CN1200198C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216215A (en) * | 2012-08-21 | 2013-07-24 | 东营胜利高原有限公司 | Intelligent control system of pumping unit |
| CN103994173A (en) * | 2013-02-20 | 2014-08-20 | 大庆国电海天科技有限公司 | Method for remotely automatically adjusting oil well random-load balance |
| CN104793655A (en) * | 2015-02-12 | 2015-07-22 | 大庆市华禹石油机械制造有限公司 | Integrated permanent magnet stepless speed regulating device of oil pumping unit |
| CN112327943A (en) * | 2020-11-10 | 2021-02-05 | 中国科学院长春光学精密机械与物理研究所 | Method and system for positioning azimuth axis and calculating counterweight of airborne photoelectric platform of heavy-weight motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1200198C (en) | 2005-05-04 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: AMERICA DIPAIYI PETROLEUM SCIENTIFIC + TECHNICAL C Free format text: FORMER OWNER: LU XU Effective date: 20090821 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Haidian District, Beijing Guancheng South Park 9-17D Zhang Yongan Post Code: 100088 Patentee after: Lu Xu Patentee after: Li Ying Address before: Haidian District, Beijing Guancheng South Park 9-17D Zhang Yongan Post Code: 100088 Patentee before: Lu Xu Patentee before: Li Ying |
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| TR01 | Transfer of patent right |
Effective date of registration: 20090821 Address after: American Colorado Patentee after: The United States Dipai oil spill technology Co. Address before: Beijing City, Haidian District Ken Nanyuan 9-17D Zhang Yongan Patentee before: Lu Xu Patentee before: li Ying |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050504 Termination date: 20131129 |