CN101854107B - Brushless DC motor for energy-saving oil extractor - Google Patents
Brushless DC motor for energy-saving oil extractor Download PDFInfo
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- CN101854107B CN101854107B CN 200910030080 CN200910030080A CN101854107B CN 101854107 B CN101854107 B CN 101854107B CN 200910030080 CN200910030080 CN 200910030080 CN 200910030080 A CN200910030080 A CN 200910030080A CN 101854107 B CN101854107 B CN 101854107B
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- external rotor
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- brushless
- energy
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- 239000000428 dust Substances 0.000 claims abstract description 10
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 4
- 230000004308 accommodation Effects 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 241001023788 Cyttus traversi Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention discloses a brushless DC motor for an energy-saving oil extractor. As the brushless DC motor adopts a stator with a multilevel magnetic circuit and a barrel outer rotor covered with high performance NdFeB magnet, thus realizing the aims of low speed and high torque; as the structure that a belt is used to directly drive a sucker rod is adopted, the complicated drive mechanism of the common beam oil extractor can be omitted, the work efficiency of the oil extractor can be increased and the aim of saving energy can realized; as a Hall sensor with backup is adopted, the possibility of changing the position sensor is greatly reduced; as the Hall sensor with backup is arranged in a bearing cap, when the sensor is replaced, a dust cap is only needed to remove without disassembling the electric motor and the detect of the traditional electric motor that when the position sensor is replaced, the electric motor is needed to disassemble can be avoided; and the stroke of oil extraction both adopts hardware limit and software limit so that the stroke control can be more effective and reliable and kicking can be effectively prevented.
Description
Technical field
The present invention relates to the motor that uses on a kind of petroleum extractor, specifically a kind of low speed, big moment brshless DC motor.
Background technology
Oil pumper commonly used at present is beam type, it is made up of horse head, lever walking beam, support, connecting rod, cam, reduction box, support, motor, electrical control cubicles etc., the motor that present oil pumper adopts is asynchronous machine or permanent magnet synchronous machine, the outputting power of motor drives sucker rod via transmissions such as reduction box, cam, connecting rod, horse head, lever walking beams and moves up and down, and realizes the oil pumping function.This class oil pumper overall efficiency is lower, about about 30%.
Summary of the invention
In order to overcome above-mentioned defective, the invention provides a kind of brushless DC motor for energy-saving oil extractor, this brushless DC motor for energy-saving oil extractor has the characteristic of low speed, big moment, and has advantages such as easy to maintenance, that control is reliable.
The present invention for the technical scheme that solves its technical problem and adopt is:
A kind of brushless DC motor for energy-saving oil extractor, comprise dead axle, the external rotor of stator and tubular, dead axle fixedly is through in the stator, stator is with external rotor outward, between external rotor and stator air gap is arranged, two end cap is individually fixed in external rotor two ends and sealing external rotor two ends, dead axle passes two end cap, external rotor and two end cap can be rotated around dead axle, the magnetic circuit of described stator is greater than 20 pairs of levels, (being stained with) magnetic energy product is fixedly arranged more than or equal to the Nd-Fe-B magnet steel of 35MGOs in the external rotor of described tubular, make this brushless DC motor for energy-saving oil extractor reach 1～35 rev/min low speed, reach as high as the big moment of 9500 Ns of rice.
Further technical scheme of the present invention is:
Each fixedly has two belt pulleys on the outer face of two end caps of described external rotor, belt pulley is through on the dead axle, external rotor drives end cap and belt pulley rotates around dead axle, be arranged with belt on the belt pulley, belt is provided with four, article two, an end of belt is individually fixed on two belt pulleys at electric external rotor two ends, and the other end of two belts all connects sucker rod; One end of two other belt is fixed on two other belt pulley at external rotor two ends, and the other end of two other belt all connects balance weight.The rotating of belt pulley has driven sucker rod and has pumped, balance weight is done the counter motion with respect to sucker rod simultaneously, this belt directly drives the structure of sucker rod can save the loaded down with trivial details transmission mechanism of beam pumping unit commonly used, can improve the oil pumper operating efficiency, reach purpose of energy saving.
All be provided with bearing between the end cap at described external rotor two ends and belt pulley and dead axle, the outer end of two bearings all is sealed with bearing cap, one of them bearing cap inside offers accommodation space, being provided with the Hall element of preparing and carrying part fixedly is placed in the accommodation space in the bearing cap, be provided with dust cap, accommodation space on the dust cap sealing bearing cap, the described inductive magnetic steel of preparing and carrying the Hall element of part is embedded in the inner surface of external rotor.Because position transducer has adopted the Hall element of preparing and carrying part, the possibility that makes position transducer to change descends greatly, again owing to the Hall element of preparing and carrying part is loaded in the bearing cap, change even need, only need pull down dust cap during replacing can implement, needn't take motor apart, avoid the confidential change bit of traditional electrical to put the drawback that transducer need be taken motor apart.
Be provided with electric machine controller, electric machine controller is carried out the dual spacing control protection of software control and hardware controls to the oil pumper stroke.Make that like this stroke that recovers the oil has had software limit again except hardware limit, make stroke control more effective and reliable, can effectively prevent towards well.
Described software control refers to be equipped with in the electric machine controller control software, and Hall element passes to electric machine controller with the data of sampling, and the control software in the electric machine controller carries out analyzing and processing and controls the oil pumper stroke data.
Hardware controls refers to travel switch.
The invention has the beneficial effects as follows: this brushless DC motor for energy-saving oil extractor has been owing to adopted the stator of multistage magnetic circuit (greater than 20 pairs of utmost points) and be stained with the external rotor of the tubular of high-performance Ne-Fe-B magnet steel (being not less than N35), reached the purpose of low speed (1～35 rev/min), big moment (reaching as high as 9500 Ns of rice); Owing to adopted belt directly to drive the structure of sucker rod, saved the loaded down with trivial details transmission mechanism of beam pumping unit commonly used, can improve the oil pumper operating efficiency, reach purpose of energy saving; Owing to adopted the Hall element of preparing and carrying part, the possibility that makes position transducer to change descends greatly, again owing to the Hall element of preparing and carrying part is loaded in the bearing cap, change even need, only need pull down dust cap during replacing can implement, needn't take motor apart, avoid the confidential change bit of traditional electrical to put the drawback that transducer need be taken motor apart; The stroke that recovers the oil has software limit again except hardware limit, make stroke control more effective and reliable, can effectively prevent towards well.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the another side view of Fig. 1;
Fig. 3 is the A portion enlarged drawing of Fig. 1.
Embodiment
Embodiment: a kind of brushless DC motor for energy-saving oil extractor, comprise dead axle 1, the external rotor 3 of stator 2 and tubular, dead axle fixedly is through in the stator, stator is with external rotor outward, between external rotor and stator air gap is arranged, two end cap 4 is individually fixed in external rotor two ends and sealing external rotor two ends, dead axle passes two end cap, external rotor and two end cap can be rotated around dead axle, the magnetic circuit of described stator is greater than 20 pairs of levels, (being stained with) magnetic energy product is fixedly arranged more than or equal to the Nd-Fe-B magnet steel of 35MGOs in the external rotor of described tubular, make this brushless DC motor for energy-saving oil extractor reach 1～35 rev/min low speed, reach as high as the big moment of 9500 Ns of rice.
Each fixedly has two belt pulleys 5 on the outer face of two end caps of described external rotor, belt pulley is through on the dead axle, external rotor drives end cap and belt pulley rotates around dead axle, be arranged with belt 6 on the belt pulley, belt is provided with four, article two, an end of belt is individually fixed on two belt pulleys at electric external rotor two ends, and the other end of two belts all connects sucker rod; One end of two other belt is fixed on two other belt pulley at external rotor two ends, and the other end of two other belt all connects balance weight.The rotating of belt pulley has driven sucker rod and has pumped, balance weight is done the counter motion with respect to sucker rod simultaneously, this belt directly drives the structure of sucker rod can save the loaded down with trivial details transmission mechanism of beam pumping unit commonly used, can improve the oil pumper operating efficiency, reach purpose of energy saving.
All be provided with bearing between the end cap at described external rotor two ends and belt pulley and dead axle, the outer end of two bearings all is sealed with bearing cap 7, one of them bearing cap inside offers accommodation space, being provided with the Hall element of preparing and carrying part 8 fixedly is placed in the accommodation space in the bearing cap, be provided with dust cap 9, accommodation space on the dust cap sealing bearing cap, the described inductive magnetic steel of preparing and carrying the Hall element of part is embedded in the inner surface of external rotor.Because position transducer has adopted the Hall element of preparing and carrying part, the possibility that makes position transducer to change descends greatly, again owing to the Hall element of preparing and carrying part is loaded in the bearing cap, change even need, only need pull down dust cap during replacing can implement, needn't take motor apart, avoid the confidential change bit of traditional electrical to put the drawback that transducer need be taken motor apart.
Be provided with electric machine controller 10, electric machine controller is carried out the dual spacing control protection of software control and hardware controls to the oil pumper stroke.Make that like this stroke that recovers the oil has had software limit again except hardware limit, make stroke control more effective and reliable, can effectively prevent towards well.
Described software control refers to be equipped with in the electric machine controller control software, and Hall element passes to electric machine controller with the data of sampling, and the control software in the electric machine controller carries out analyzing and processing and controls the oil pumper stroke data.
Hardware controls refers to travel switch.
Claims (4)
1. brushless DC motor for energy-saving oil extractor, it is characterized in that: the external rotor (3) that comprises dead axle (1), stator (2) and tubular, dead axle fixedly is through in the stator, stator is with external rotor outward, between external rotor and stator air gap is arranged, two end cap (4) is individually fixed in external rotor two ends and sealing external rotor two ends, dead axle passes two end cap, external rotor and two end cap can be rotated around dead axle, the magnetic circuit of described stator fixedly has magnetic energy product more than or equal to the Nd-Fe-B magnet steel of 35MGOs greater than 20 pairs of utmost points in the external rotor of described tubular;
Each fixedly has two belt pulleys (5) on the outer face of two end caps of described external rotor, belt pulley is through on the dead axle, external rotor drives end cap and belt pulley rotates around dead axle, be arranged with belt (6) on the belt pulley, belt is provided with four, article two, an end of belt is individually fixed on two belt pulleys at electric external rotor two ends, and the other end of two belts all connects sucker rod; One end of two other belt is fixed on two other belt pulley at external rotor two ends, and the other end of two other belt all connects balance weight;
All be provided with bearing between the end cap at described external rotor two ends and belt pulley and dead axle, the outer end of two bearings all is sealed with bearing cap (7), one of them bearing cap inside offers accommodation space, being provided with the Hall element of preparing and carrying part (8) fixedly is placed in the accommodation space in the bearing cap, be provided with dust cap (9), accommodation space on the dust cap sealing bearing cap, the described inductive magnetic steel of preparing and carrying the Hall element of part is embedded in the inner surface of external rotor.
2. a kind of brushless DC motor for energy-saving oil extractor according to claim 1 is characterized in that: be provided with electric machine controller (10), electric machine controller is carried out the dual spacing control protection of software control and hardware controls to the oil pumper stroke.
3. a kind of brushless DC motor for energy-saving oil extractor according to claim 2, it is characterized in that: described software control refers to be equipped with in the electric machine controller control software, Hall element passes to electric machine controller with the data of sampling, and the control software in the electric machine controller carries out analyzing and processing and controls the oil pumper stroke data.
4. a kind of brushless DC motor for energy-saving oil extractor according to claim 2, it is characterized in that: hardware controls refers to travel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910030080 CN101854107B (en) | 2009-03-30 | 2009-03-30 | Brushless DC motor for energy-saving oil extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910030080 CN101854107B (en) | 2009-03-30 | 2009-03-30 | Brushless DC motor for energy-saving oil extractor |
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| Publication Number | Publication Date |
|---|---|
| CN101854107A CN101854107A (en) | 2010-10-06 |
| CN101854107B true CN101854107B (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910030080 Active CN101854107B (en) | 2009-03-30 | 2009-03-30 | Brushless DC motor for energy-saving oil extractor |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545523A (en) * | 2012-01-20 | 2012-07-04 | 西南大学 | Sensor mounting assembly for brushless DC motor of motor-driven device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6204589B1 (en) * | 1999-11-08 | 2001-03-20 | Acumentrics Corporation | Strain-matched hub for motor/generator |
| CN2746119Y (en) * | 2004-11-19 | 2005-12-14 | 长庆石油勘探局机械制造总厂 | Beam-pumping unit |
| CN201048339Y (en) * | 2007-04-12 | 2008-04-16 | 台州圣威机电有限公司 | DC brushless electric motor for electric vehicle |
| CN201430520Y (en) * | 2009-03-30 | 2010-03-24 | 昆山航天林泉电机有限公司 | Brushless DC motor for energy-saving oil extractor |
-
2009
- 2009-03-30 CN CN 200910030080 patent/CN101854107B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6204589B1 (en) * | 1999-11-08 | 2001-03-20 | Acumentrics Corporation | Strain-matched hub for motor/generator |
| CN2746119Y (en) * | 2004-11-19 | 2005-12-14 | 长庆石油勘探局机械制造总厂 | Beam-pumping unit |
| CN201048339Y (en) * | 2007-04-12 | 2008-04-16 | 台州圣威机电有限公司 | DC brushless electric motor for electric vehicle |
| CN201430520Y (en) * | 2009-03-30 | 2010-03-24 | 昆山航天林泉电机有限公司 | Brushless DC motor for energy-saving oil extractor |
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| Publication number | Publication date |
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| CN101854107A (en) | 2010-10-06 |
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Address after: 215312 No. 268, Songshan Road, hi tech Zone, Jiangsu, Suzhou Patentee after: SUZHOU AEROSAPCE LINQUAN MOTOR Co.,Ltd. Address before: 215312 Jiangsu Province, Kunshan City Shipai Town Street No. 1328 Changjiang Road Patentee before: KUNSHAN AEROSPACE LINQUAN ELECTRICAL MACHINERY CO.,LTD. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240112 Address after: No. 268 Songshan Road, High tech Zone, Suzhou City, Jiangsu Province, China Patentee after: SUZHOU BRANCH OF GUIZHOU SPACEFLIGHT LINQUAN MOTOR Co.,Ltd. Address before: 268 Songshan Road, Suzhou High tech Zone Patentee before: SUZHOU AEROSAPCE LINQUAN MOTOR Co.,Ltd. |
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| TR01 | Transfer of patent right |