CN201821245U - Asynchronous-starting permanent magnet synchronous motor of beam-pumping unit - Google Patents
Asynchronous-starting permanent magnet synchronous motor of beam-pumping unit Download PDFInfo
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- CN201821245U CN201821245U CN2010205364834U CN201020536483U CN201821245U CN 201821245 U CN201821245 U CN 201821245U CN 2010205364834 U CN2010205364834 U CN 2010205364834U CN 201020536483 U CN201020536483 U CN 201020536483U CN 201821245 U CN201821245 U CN 201821245U
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Abstract
The utility model relates to an asynchronous-starting permanent magnet synchronous motor of a beam-pumping unit, belongs to the field of beam-pumping units in oil patches, particularly relates to the improvement on the rotor of an asynchronous motor in an oil pumping unit, and aims to ensure the safe running of the motor apparatus and eliminate the pollution to a power network in the oil patch caused by ultra harmonics generated by self-generating of the motor in the oil pumping unit. The asynchronous-starting permanent magnet synchronous motor comprises a casing, a stator with a straight slot is arranged in the casing, a stator winding is embedded in the stator slot, and a rotor with a skewed slot is arranged in the stator. The asynchronous-starting permanent magnet synchronous motor is structurally characterized in that squirrel cage guide strips corresponding to the pole amount of the rotor are arranged in the skewed slot of the rotor, permanent magnets are arranged in the skewed slot among the squirrel cage guide strips, conductive tubes are wrapped outside the permanent magnets, the conductive tubes extend out of the rotor and are fixed on pressure plates, and the pressure plates are fixed on the rotor through connecting bolts.
Description
Technical field
The utility model belongs to the field of oil field beam-pumping unit, relates in particular to the improvement of this oil pumper asynchronous motor rotor.
Background technology
1, beam-pumping unit brief introduction: as shown in Figure 9, motor 100 starts the back and drives reductor 900 by the normal speed rotation, thereby driving crank 200 and balance weight 800 moves in a circle around 900 of reductors, under crank 200 drives, connecting rod 300 hauls walking beam 400 around fulcrum 500 rotations, the horse head 600 of the other end drives sucker rod 700 and does reciprocating linear motion, the oil well pump back and forth movement oil pumping of sucker rod 700 lower ends.
2, the problem of beam-pumping unit existence at present: the type oil pumper is simple in structure, and the ability of opposing adverse circumstances is strong, and failure rate is low.But the intrinsic defective of such oil pumper structure will restrict its popularization.The present will be as follows with the analysis of present technique relative section: this oil pumper is as a balance, and its one hangs tens tons of heavy sucker rods 700 and the oil of taking out, and the other end is hung several tons heavy balance weight 800 and crank 200 connecting rods 300.If the equalising torque at balance two ends, with a very little power, as long as overcome the friction of fulcrum roller, system will freely rotate.The gravitational moment substantially constant of sucker rod 700 ends; The gravitational moment of balance weight 900 ends changes by sinusoidal rule, gravitational moment maximum during crank 200 horizontal levels, and gravitational moment is zero during vertical position.During oil pumping, promptly sucker rod 700 is from lowermost end when up, and crank 200 is in position vertically upward, and balance weight 800 is at top dead centre, and gravitational moment is zero, and motor 100 output torques drive cranks 200 rotations, and sucker rod 700 is moved upward.Along with the rotation of crank 200, balance weight 800 gravitational moments strengthen gradually by sinusoidal rule, and when crank 200 during near level, balance weight 800 gravitational moments obviously increase, and add its rotation momentum
(J-balance weight 800 moment of inertia, ω-balance weight 800 angular speed) might stress moment greater than sucker rod 700.Make exceed the quata constant speed degree operation of motor of oil extractor 100.Owing to remanent magnetism is arranged in the motor 100, so the time motor 100 be in generating state, yet motor 100 speed are non-constant, remanent magnetism utmost point skewness is so the electricity that sends all is a high order harmonic component.So, in 600 1 back and forth movement processes of sucker rod, because moment unbalance will have the chance more than 3 times generating state to occur.
The high order harmonic component electric power that above-mentioned oil pumper is spontaneous will damage the insulation of motor 100, even burns motor 100.When the oil pumper electric drive system was controlled by the power frequency switch, this high order harmonic component was delivered on the electrical network by control switch, and the quality of electrical network is descended.According to incomplete investigation, voltage distortion rate 〉=5% of present oilfield electric net, current distortion rate 〉=78% seriously exceeds the provisions of the relevant regulations issued by the State.Motor of oil extractor 100, electrical equipment burning damage accident happen occasionally, and causing has a power failure stops production, and has some relations with these high order harmonic components.The oil field begins to apply the variable-frequency control technique oil recovery in recent years, and first object of attack of this high order harmonic component is these power electronics control device, because their element spacings are very near, distributed capacitance is big, is easy to constitute the high order harmonic component short circuit.For protecting these power electric components, increased brake unit and brake resistance in the equipment, when spike reaches threshold voltage, connect the high order harmonic component that brake resistance sends out motor automatically and consume, alleviate the pollution of high order harmonic component to electrical network.But the heating of brake resistance consumed power, the resistance skin temperature reaches more than 200 ℃ sometimes, can light article such as paper grass fringe, and components and parts such as the electric wire switch that ignites cause short circuit to burn control device, stop well, cause fire incidents such as squibbing when serious.Invented energy feedback unit in the recent period again, power electronics control device no longer connects brake unit and brake resistance, but connects energy feedback unit, motor 100 electricity are reverse into power current by this unit and send electrical network back to, no longer include heat generating spot, do not waste energy again, and alleviated the pollution of electrical network.But these high order harmonic components do not alleviate the threat of motor 100 and power electronics control device, still do not deal with problems from root.Optimal scheme should be to make motor 100 unautogenous.
In reason, oil pumper first wife's asynchronous motor 100 is lifted down, changed the asynchronous starting permanent magnet synchronous motor 100 of new production, mixing the power frequency controller, still to mix power electronic controller all right, as long as motor 100 capacity are enough big, oil pumper self power generation problem just can have been eradicated.
But, be example with the Liaohe Oil Field, nearly 30,000 of the oil pumper that moves, change field-wide motor of oil extractor 100 and will invest 10.5 hundred million yuan at present, all change as the motor of oil extractor 100 of petroleum system, country will invest 30,000,000,000 yuan more than! Expense is too big, and popularization is difficult to carry out.
Summary of the invention
The utility model purpose is to make the safe operation of motor electrical equipment, eradicates the asynchronous starting permanent magnet synchronous motor of the beam-pumping unit of the pollution that high order harmonic component that the motor of oil extractor self power generation produces causes oilfield electric net.
For reaching above-mentioned purpose of the present utility model, the utility model adopts following technical scheme, the utility model comprises housing, the stator that has straight trough in the housing, the embedded stator winding that is placed with of stator slot, the rotor that has skewed slot in the stator, has mouse cage sliver in the skewed slot of its structural feature rotor corresponding to the rotor number of poles, in the skewed slot between the mouse cage sliver permanent magnet is set, permanent magnet is coated with contact tube, contact tube stretches out in outside the rotor and is individually fixed on the pressing plate, is fixed on the rotor by connecting bolt between the pressing plate.
The beneficial effects of the utility model: during motor starting, the mouse cage sliver that the conductive layer of rotor of the present utility model forms works, after reaching the setting rotating speed, permanent magnet and rotating magnetic field adhesive realize synchronous operation, the conductive layer induced currents is 0, no longer produce torque, permanent magnet in service and rotating magnetic field adhesive keep synchronously automatically, so there is not the possibility of hypervelocity self power generation.Motor of the present utility model just avoids producing high order harmonic component to the pollution that oilfield electric net causes, and has improved the level of motor electrical equipment safe operation.
Description of drawings
Fig. 1 is the structural representation of motor of the present utility model.
Fig. 2 is the structural representation of the rotor of motor of the present utility model.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the structural representation of connecting bolt.
Fig. 5 is the left view of Fig. 4.
Fig. 6 is the structural representation of contact tube.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the structural representation of pressing plate.
Fig. 9 is the structural representation of existing beam-pumping unit.
Embodiment
The utility model comprises housing 1, the stator 3 that has straight trough in the housing 1, the embedded stator winding 4 that is placed with of stator 3 grooves, the rotor 2 that has skewed slot 5 in the stator 3, have the mouse cage sliver 12 corresponding to rotor 2 numbers of poles in the skewed slot 5 of rotor 2, in the skewed slot 5 between the mouse cage sliver 12 permanent magnet 13 is set, permanent magnet 13 is coated with contact tube 6, contact tube 6 stretches out in outside the rotor 2 and is individually fixed on the pressing plate 9, is fixed on the rotor 2 by connecting bolt 7 between the pressing plate 9.
For reaching better conductive effect, contact tube 6 can be copper tube.
Contact tube 6 stretches out can be kneaded together at the two ends of rotor 2 sides, forms fan blade 10.
Contact tube 6, pressing plate 9 and connecting bolt 7 all can be welded in one.
The cross section of connecting bolt 7 can be trapezoidal, can prevent that contact tube 6 is loosening.
During making, the utility model mainly is that the asynchronous motor with oil pumper serves as to transform object.Its stator 3 is motionless, and rotor 2 is widened, deepened by former skewed slot, and annexes such as other bearing, belt pulley are neither moving; In rotor 2 skewed slots 5 that are embedded into after permanent magnet 13 processing after expanding processing, outside the permanent magnet 13 is contact tube 6, and contact tube 6 stretches out in outside the rotor 2, and is welded in respectively on the pressing plate 9, pressing plate 9 and adjacent remaining end boxing jail have formed mouse cage sliver 12 permanent magnets 13 assemblys.Between the pressing plate 9 by connecting bolt 7 fastening after, connecting bolt 7 is welded on the pressing plate 9.During motor starting, the mouse cage sliver 12 that conductive layer forms works, after reaching the setting rotating speed, permanent magnet 13 is realized synchronous operation with the rotating magnetic field adhesive, motor of the present utility model just avoids producing high order harmonic component to the pollution that oilfield electric net causes, and has improved the level of motor electrical equipment safe operation.
Claims (5)
1. the asynchronous starting permanent magnet synchronous motor of beam-pumping unit, comprise housing (1), the stator (3) that has straight trough in the housing (1), the embedded stator winding (4) that is placed with of stator (3) groove, the rotor (2) that has skewed slot (5) in the stator (3), it is characterized in that having in the skewed slot (5) of rotor (2) mouse cage sliver (12) corresponding to rotor (2) number of poles, in the skewed slot (5) between the mouse cage sliver (12) permanent magnet (13) is set, permanent magnet (13) is coated with contact tube (6), contact tube (6) stretches out in outside the rotor (2) and is individually fixed on the pressing plate (9), is fixed on the rotor (2) by connecting bolt (7) between the pressing plate (9).
2. the asynchronous starting permanent magnet synchronous motor of beam-pumping unit according to claim 1 is characterized in that contact tube (6) is a copper tube.
3. the asynchronous starting permanent magnet synchronous motor of beam-pumping unit according to claim 1 is characterized in that permanent magnet (13) is a rare-earth permanent magnet.
4. the asynchronous starting permanent magnet synchronous motor of beam-pumping unit according to claim 1, it is kneaded together to it is characterized in that contact tube (6) stretches out at the two ends of rotor (2) side, forms fan blade (10).
5. the asynchronous starting permanent magnet synchronous motor of beam-pumping unit according to claim 1, the cross section that it is characterized in that connecting bolt (7) is trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205364834U CN201821245U (en) | 2010-09-20 | 2010-09-20 | Asynchronous-starting permanent magnet synchronous motor of beam-pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205364834U CN201821245U (en) | 2010-09-20 | 2010-09-20 | Asynchronous-starting permanent magnet synchronous motor of beam-pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201821245U true CN201821245U (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205364834U Expired - Fee Related CN201821245U (en) | 2010-09-20 | 2010-09-20 | Asynchronous-starting permanent magnet synchronous motor of beam-pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201821245U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868275A (en) * | 2012-09-18 | 2013-01-09 | 无锡锡山特种风机有限公司 | Three-phase permanent magnet synchronous motor |
| CN103840569A (en) * | 2012-11-21 | 2014-06-04 | 财团法人工业技术研究院 | Stator module and magnetic force generating member thereof |
-
2010
- 2010-09-20 CN CN2010205364834U patent/CN201821245U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868275A (en) * | 2012-09-18 | 2013-01-09 | 无锡锡山特种风机有限公司 | Three-phase permanent magnet synchronous motor |
| CN103840569A (en) * | 2012-11-21 | 2014-06-04 | 财团法人工业技术研究院 | Stator module and magnetic force generating member thereof |
| TWI488409B (en) * | 2012-11-21 | 2015-06-11 | Ind Tech Res Inst | Stator module and magnetic generator thereof |
| US9515530B2 (en) | 2012-11-21 | 2016-12-06 | Industrial Technology Research Institute | Stator module and magnetic field generating structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170417 Address after: 834000 the Xinjiang Uygur Autonomous Region Karamay HuiFu home building C7 No. 21 Patentee after: Xinjiang Union Energy Technology Co., Ltd. Address before: 124010 Panshan County, Liaoning, Panjin economic and Technological Development Zone Patentee before: Liaoning Haotiancheng Intelligent System Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20190920 |