CN104295273A - Oil pumping unit at mouth of well - Google Patents
Oil pumping unit at mouth of well Download PDFInfo
- Publication number
- CN104295273A CN104295273A CN201410632450.2A CN201410632450A CN104295273A CN 104295273 A CN104295273 A CN 104295273A CN 201410632450 A CN201410632450 A CN 201410632450A CN 104295273 A CN104295273 A CN 104295273A
- Authority
- CN
- China
- Prior art keywords
- pumping unit
- switched reluctance
- rotating disk
- eccentric shaft
- reluctance machines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 239000003638 chemical reducing agent Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 22
- 238000004804 winding Methods 0.000 description 10
- 230000007812 deficiency Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention belongs to the technical field of mechanical equipment for oil extraction in oil fields, and particularly provides an oil pumping unit at the mouth of a well. The oil pumping unit comprises a pumping rod as well as a switch reluctance machine, a speed reducer, a rotary disk, an eccentric shaft and a motor control cabinet, wherein one end of the switch reluctance machine is electrically connected with the motor control cabinet, and the other end thereof is connected with the rotary disk through a universal driving shaft; the eccentric shaft is arranged on the rotary disk; the pumping rod is connected with the eccentric shaft. By utilizing the advantages of the switch reluctance machine, the oil pumping unit at the mouth of the well removes belt drive and reduces the power transmission link to improve the transmission efficiency, and eliminates insufficient power when a three-phase asynchronous motor is used as an oil pumping unit, so as to achieve the purposes of energy conservation and consumption reduction.
Description
Technical field
The invention belongs to oil extraction in oil field mechanical equipment technical field, be specifically related to a kind of pumping unit of well mouth.
Background technology
Oil pumper is the ground driving arrangement of rod pumping system, and by its basic structure, existing oil pumper can be divided into beam type and without the large class of beam type two.Beam pumping unit primarily of walking beam-connecting rod-crank mechanism, reducing gear, power-equipment and servicing unit etc. four part composition, as Fig. 1 shows; The oil pumper replacing walking beam by other modes such as flexible pieces without beam pumping unit, as Fig. 2 shows.
And be no matter beam pumping unit or be all adopt belt transmission without beam pumping unit, belt forms the speed reduction gearing of oil pumper together with reducer, to realize power transmission from motor to crank axle and deceleration, the belt that oil pumper is commonly used is based on classical V-belt and narrow V belt, and transmission efficiency is generally 0.90 ~ 0.95.But because belt transmission is undertaken moving and power transmission by the frictional force between belt and wheel, and oil pumper bears fluctuating load, there is wheel face skidding, and therefore the momentary efficiency of belt can change.
In addition, existing oil pumper by threephase asynchronous machine as oil pumper power, and threephase asynchronous machine be used as oil pumper power time, there is the deficiency of the following aspects:
(1) belong to heavy load when oil pumper starts to start, the starting torque of needs is large, and must be equipped with powerful threephase asynchronous machine, system energy consumption is higher.
(2) oil pumper start after when normally running, little when the moment of torsion of needs starts relatively, cause the threephase asynchronous machine power utilization that is equipped with according to starting torque and efficiency on the low side.
(3) same oil pumping type, motor rated power is larger, and its power utilization is lower.
Meanwhile, threephase asynchronous machine is located to run in low-load conditions for a long time, and energy loss is high, thus the system effectiveness affecting rod-pumped well entirety improves.
Summary of the invention
The object of the invention is to overcome existing belt of oil pumping machine transmission efficiency low, and threephase asynchronous machine is as the problem of above-mentioned deficiency during oil pumper power.
For this reason, the invention provides a kind of pumping unit of well mouth, comprise sucker rod, also comprise switched reluctance machines, rotating disk, eccentric shaft and motor control box;
Described switched reluctance machines one end is electrically connected with motor control box, and the other end is connected by universal driving shaft with rotating disk, and described rotating disk is provided with eccentric shaft, and described sucker rod is connected with eccentric shaft.
Above-mentioned eccentric shaft is flexibly connected with between rotating disk.
Above-mentioned rotating disk is provided with balancing weight.
Above-mentioned motor control box is made up of micro computer, energy-saving control module, power inverter, and energy-saving control module is connected with microcomputer electric respectively with power inverter.
Above-mentioned switched reluctance machines is stator, rotor double-salient-pole variable reluctance motor.
Described switched reluctance machines, reducer and rotating disk by stent support on ground.
Beneficial effect of the present invention:
(1) cancel belt and reducer transmission, decrease power transmission link, improve power drive mechanism transmission efficiency.
(2) reduce motor operating current, reactive power, reduce motor power loss, improve pumping unit system surface efficiency.
(3) switched reluctance machines is by microcomputerized control, can carry out intelligent speed-regulating running according to the load change of oil pumper, overcomes existing oil pumper and adjusts ginseng difficulty, safeguards and adjust the shortcomings such as ginseng labour intensity is high.
(4) switched reluctance machines is furnished with brake protector, and motor is safe and reliable to operation.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional type beam pumping unit.
Fig. 2 is the structural representation of linking rod-crank type without beam pumping unit.
Fig. 3 is switched reluctance machines operating principle schematic diagram.
Fig. 4 is switched reluctance machines initial launch curve map.
Fig. 5 is the structural representation that the present invention does not need bel-drivenn pumping unit of well mouth.
Description of reference numerals: 1, switched reluctance machines; 2, rotating disk; 3, eccentric shaft; 4, sucker rod; 5, balancing weight; 6, motor control box.
Detailed description of the invention
Embodiment 1:
Low in order to overcome existing belt of oil pumping machine transmission efficiency, and threephase asynchronous machine is as the problem of Shortcomings during oil pumper power, present embodiments provide a kind of pumping unit of well mouth as shown in Figure 5, comprise sucker rod 4, also comprise switched reluctance machines 1, rotating disk 2, eccentric shaft 3 and motor control box 6;
Described switched reluctance machines 1 one end is electrically connected with motor control box 6, and the other end is connected by universal driving shaft with rotating disk 2, and described rotating disk 2 is provided with eccentric shaft 3, and described sucker rod 4 is connected with eccentric shaft 3.
Described switched reluctance machines 1 and rotating disk 2 by stent support on ground; Described eccentric shaft 3 is flexibly connected with between rotating disk 2, and sucker rod 4 realizes different stroke by hanging positions different on rotating disk 2, is ceaselessly rotated by rotating disk 2, drives sucker rod 4 to move up and down, realizes the pumping process of oil well pump.Meanwhile, described rotating disk 2 is provided with balancing weight 5, this balancing weight 5 is placed in the footpath of sucker rod 4 hanging position on rotating disk 2 distally, plays balanced action.
And wherein, described switched reluctance machines 1 is stator, rotor double-salient-pole variable reluctance motor, by stator, rotor, position sensor, fan, casing forms, stator, rotor is overrided to form by ordinary silicon steel disc, stator is equipped with concentratred winding, rotor there is no winding and permanent magnet, rotor is positioned at stator interior, position sensor is installed on the non-end of exerting oneself of motor internal, relative position signal is transmitted to motor control box 7, casing is wrapped in stator, rotor, position sensor, rotor both without winding also without permanent magnet, stator poles is wound with concentratred winding, two windings in series diametrically form the two poles of the earth magnetic pole, be called " phase ".
As shown in Figure 3, the operating principle of switched reluctance machines 1 is magnetic resistance minimum principle, namely when stator phase winding is energized, the magnetic field produced produces tangential magnetic pull due to magnetic line of force distortion, attempt to make close rotor magnetic pole rotate to the position of its axis and this magnetic pole of the stator axial alignment, i.e. magnetic resistance minimum position.
In Fig. 3, N, S pole represents the rotating excitation field that motor stator winding produces, with rotating speed n
1counterclockwise rotate, centre is rotor, and the axis on rotor with salient pole direction is called d axle, and the axis orthogonal with d axle is called q axle; When the axis of rotating excitation field is consistent with rotor d direction of principal axis, magnetic flux to pass through the magnetic resistance in path minimum; When the axis of rotating excitation field is consistent with rotor q direction of principal axis, the magnetic resistance in the path that magnetic flux passes through is maximum; And when rotor and stator field are in other relative positions, magnetic resistance changes between, Stators for Switched Reluctance Motors winding is energized successively, produces magnetic field and rotor is rotated.
Switched reluctance machines 1 has following characteristics: (1) electric efficiency is high, and loss is little, and switched reluctance machines has high output and high efficiency in the rotating speed and power bracket of broadness, and rotor does not exist winding copper loss, and when empty load of motor runs, electric current is little; (2) starting torque is large, starting current is low, and switched reluctance machines is compared with threephase asynchronous machine, and when its starting under load moment of torsion reaches 1.5 times of nominal torque, starting current is only 1/3rd of rated current; (3) power factor is high, the closed-loop control owing to being position when switched reluctance machines runs, and there will not be and lose step and step-out phenomenon, reactive power is little, and power factor is close to 1, and threephase asynchronous machine power factor is relevant with load factor, generally below 0.9; (4) controllable parameter is many, good speed adjustment features, and switched reluctance machines can control direction and the size of electromagnetic moment by controlling the power on/off moment of phase winding, the amplitude of phase current pulse and width etc., the speed that realizes regulates.
In sum, the present invention utilizes the advantage of switched reluctance machines, cancels belt and reducer, reduces power transmission link, improves transmission efficiency, eliminates threephase asynchronous machine as deficiency during oil pumper power simultaneously, reaches energy-saving and cost-reducing object.
Embodiment 2:
On the basis of embodiment 1, described motor control box 6 is made up of micro computer, energy-saving control module, power inverter, and energy-saving control module is connected with microcomputer electric respectively with power inverter.Described motor control box 6 is for realizing the continuous running of gauge tap reluctance motor 1, its specific works principle is as follows: the instruction of microcomputerized overall processing speed, feedback speed signal and the feedback information by position sensor control the break-make of main switching device in power inverter, realize the control to switched reluctance machines 1 running status.Energy-saving control module, according to feedback speed signal, runs intelligent speed-regulating algorithm, is optimized operating analysis and calculates, formation control strategy, and generating run instruction.Power inverter is opened and shutoff according to the instruction assigned real-time gauge tap reluctance motor 1 line group, realizes the continuous running of switched reluctance machines 1.Case micro computer in motor control box and Electric Machine Control, energy-saving control module adopt technology well-known in the art to realize above-mentioned functions.
And intelligent speed-regulating principle is as follows:
The power output of switched reluctance machines 1 and the output torque of switched reluctance machines 1 and angular velocity proportional, that is:
In formula:
p---the power output of switched reluctance machines, kW
t---the output torque of switched reluctance machines, Nm
ω---angular velocity, rad/s
The output torque of switched reluctance machines 1 depends on by the size driving load, and the size of load depends on oil pumper underground working, when underground working is determined, first follow the tracks of the initial launch curve of one-period switched reluctance machines 1 rotating speed and power, as shown in Figure 4, the power output of by-pass cock reluctance motor 1 is carried out by changing switched reluctance machines 1 rotating speed, reduce the rotating speed in high power district to reduce power output, improve the rotating speed in low-power district to improve power output, realize the redistribution to switched reluctance machines 1 power output and output torque, reach the object of intelligent speed-regulating.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (6)
1. a pumping unit of well mouth, comprises sucker rod (4), it is characterized in that: also comprise switched reluctance machines (1), rotating disk (2), eccentric shaft (3) and motor control box (6);
Described switched reluctance machines (1) one end is electrically connected with motor control box (6), the other end is connected by universal driving shaft with rotating disk (2), described rotating disk (2) is provided with eccentric shaft (3), described sucker rod (4) is connected with eccentric shaft (3).
2. pumping unit of well mouth as claimed in claim 1, is characterized in that: be flexibly connected between described eccentric shaft (3) with rotating disk (2).
3. pumping unit of well mouth as claimed in claim 1, is characterized in that: described rotating disk (2) is provided with balancing weight (5).
4. pumping unit of well mouth as claimed in claim 1, is characterized in that: described motor control box (6) is made up of micro computer, energy-saving control module, power inverter, and energy-saving control module is connected with microcomputer electric respectively with power inverter.
5. pumping unit of well mouth as claimed in claim 1, is characterized in that: described switched reluctance machines (1) is stator, rotor double-salient-pole variable reluctance motor.
6. pumping unit of well mouth as claimed in claim 1, is characterized in that: described switched reluctance machines (1) and rotating disk (2) by stent support on ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410632450.2A CN104295273A (en) | 2014-11-12 | 2014-11-12 | Oil pumping unit at mouth of well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410632450.2A CN104295273A (en) | 2014-11-12 | 2014-11-12 | Oil pumping unit at mouth of well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104295273A true CN104295273A (en) | 2015-01-21 |
Family
ID=52315190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410632450.2A Pending CN104295273A (en) | 2014-11-12 | 2014-11-12 | Oil pumping unit at mouth of well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104295273A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1735604A1 (en) * | 1990-01-08 | 1992-05-23 | Азербайджанский Институт Нефти И Химии Им.М.Азизбекова | Pumping unit |
| US20050158179A1 (en) * | 2004-01-20 | 2005-07-21 | Masoud Medizade | Method, system and computer program product for monitoring and optimizing fluid extraction from geologic strata |
| CN2869311Y (en) * | 2006-01-12 | 2007-02-14 | 单安江 | Eccentric wheel type pumping unit |
| CN202284463U (en) * | 2011-11-08 | 2012-06-27 | 袁新安 | Crank-slider type pumping unit |
| CN203720600U (en) * | 2014-02-19 | 2014-07-16 | 镇江索达联轴器有限公司 | Oil pumping machine control system |
| CN203851071U (en) * | 2014-03-05 | 2014-09-24 | 中国石油天然气股份有限公司 | Energy-saving control equipment system for dragging motor of oil pumping unit |
| CN204113235U (en) * | 2014-11-12 | 2015-01-21 | 中国石油天然气股份有限公司 | A kind of pumping unit of well mouth |
-
2014
- 2014-11-12 CN CN201410632450.2A patent/CN104295273A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1735604A1 (en) * | 1990-01-08 | 1992-05-23 | Азербайджанский Институт Нефти И Химии Им.М.Азизбекова | Pumping unit |
| US20050158179A1 (en) * | 2004-01-20 | 2005-07-21 | Masoud Medizade | Method, system and computer program product for monitoring and optimizing fluid extraction from geologic strata |
| CN2869311Y (en) * | 2006-01-12 | 2007-02-14 | 单安江 | Eccentric wheel type pumping unit |
| CN202284463U (en) * | 2011-11-08 | 2012-06-27 | 袁新安 | Crank-slider type pumping unit |
| CN203720600U (en) * | 2014-02-19 | 2014-07-16 | 镇江索达联轴器有限公司 | Oil pumping machine control system |
| CN203851071U (en) * | 2014-03-05 | 2014-09-24 | 中国石油天然气股份有限公司 | Energy-saving control equipment system for dragging motor of oil pumping unit |
| CN204113235U (en) * | 2014-11-12 | 2015-01-21 | 中国石油天然气股份有限公司 | A kind of pumping unit of well mouth |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5166429B2 (en) | Reversible hydroelectric generator | |
| US20170149303A1 (en) | Digitally controlled motor device with storage | |
| CN103280834B (en) | Variable speed constant frequency and energy storage method and device for wind power generation | |
| CN105006951A (en) | Magnetic coupling transmission device running at constant power and adjustable speed | |
| JP2017120091A (en) | Turbine having optimized efficiency | |
| CN103098356A (en) | Split permanent magnet machine | |
| WO2010082129A1 (en) | An archimedean screw apparatus for the production of hydroelectrical power | |
| CN204993021U (en) | Magnetic coupling transmission of speed regulation by constant power operation and transmission of additional power | |
| CN100456627C (en) | Power generation provision | |
| CN205241117U (en) | Tower machine rotation mechanism variable frequency speed control system | |
| CN204113235U (en) | A kind of pumping unit of well mouth | |
| RU2345468C2 (en) | Motor with transmission ratio motor element | |
| CN110492710B (en) | Double-rotor generator and control method thereof | |
| CN203851071U (en) | Energy-saving control equipment system for dragging motor of oil pumping unit | |
| CN204267306U (en) | A kind of high-speed, multi-stage Centrifugal water pump | |
| CN104295273A (en) | Oil pumping unit at mouth of well | |
| CN105257460B (en) | Modularization misphase installs multiphase fault-tolerant structure ocean current power generation unit | |
| CN109038950A (en) | A kind of synchronous permanent-magnet motor roller using electromagnetic direct-drive technology | |
| CN106300796A (en) | A kind of buncher | |
| CN209709791U (en) | A kind of Double-winding permanent magnet motor for the inspiration one that miniature gas turbine uses | |
| CN102493944A (en) | Ground direct-driving screw pump oil extraction device for switched reluctance motor | |
| CN203827115U (en) | Rotary eddy current braking motor of building tower crane | |
| CN209267364U (en) | A kind of electric device | |
| CN209375434U (en) | A kind of cartridge type permanent-magnet speed governor installing end face guide vane additional | |
| CN207853789U (en) | Brushless feedback electric-machine directly-driven intelligence control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150121 |