CN102223032B - Ultra-long structure motor composed of unit combined permanent magnet synchronous motors - Google Patents
Ultra-long structure motor composed of unit combined permanent magnet synchronous motors Download PDFInfo
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- CN102223032B CN102223032B CN2011101742077A CN201110174207A CN102223032B CN 102223032 B CN102223032 B CN 102223032B CN 2011101742077 A CN2011101742077 A CN 2011101742077A CN 201110174207 A CN201110174207 A CN 201110174207A CN 102223032 B CN102223032 B CN 102223032B
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Abstract
A super-long structure motor composed of unit combined permanent magnet synchronous motors divides a motor with a traditional super-long thin ratio structure into a plurality of unit combined permanent magnet synchronous motors with conventional thin ratio to run in parallel; the unit motors can exist independently and can be combined randomly, and complete independence of machinery and electromagnetism is achieved. The system can select the number of unit motors according to the required torque. The upper end cover and the lower end cover of the motor are respectively provided with a centering bearing and a thrust bearing; the stator core is formed by lamination through a punching sheet groove welding technology; the rotor is formed by splicing a plurality of rotor segments; the rotating shaft is made of a non-magnetic conducting material; the permanent magnet is a rectangular block built-in tangential structure; when two adjacent motors are connected, a cylindrical boss is used for guiding and positioning a spigot. The invention well solves the problem that the slender structure of the traditional motor with the super slender ratio is difficult to process, fully utilizes the characteristics of low speed and large torque of the permanent magnet synchronous motor, and can be widely applied to a pipeline motor system and an oil-submersible screw pump system.
Description
Technical field
The invention belongs to a kind of drive motors of special machine equipment, particularly a kind of permanent magnet synchronous motor.
Background technology
Along with the development of equipment manufacture, mechanized equipment is more and more higher to the requirement of its drive motors; The particularly application of special construction motor, wherein particularly outstanding with the application of low speed large torque moment permanent-magnet synchronous motor in pipeline electric system and submersible screw pumping system of super slenderness ratio (the motor slenderness ratio is greater than 1:20) structure.In recent years, the maturation of permanent magnet synchronous motor technology has replaced the traditional mechanism that asynchronous machine adds gear reduction, has realized the requirement of low-speed high-torque direct driving, has successfully avoided the asynchronous machine to add the defective that gear reduction system efficient is low, power factor is low.Traditional submersible screw pump motor generally adopts the two poles of the earth three phase squirrel cage induction motor of slim-lined construction, and its stator is comprised of the multistage iron core that nonmagnetics separates, and does not realize that mechanical structure is fully independent.Long-term engineering practice shows that there is the equal problem of each section rotor power division inequality, revolutional slip in this asynchronous machine, has shortened the life-span of motor greatly.For the problems of super slenderness ratio structure asynchronous machine, people are seeking solution always, until the popularization on a large scale of permanent magnet synchronous motor.The patent No. is 201020140638.2, and name is called direct driving type electric oil-immersed.This patent has been cancelled decelerator and decelerator protector, adopts magneto directly to drive, and has improved mechanical efficiency, has prolonged pump detection period.But the slim-lined construction of described magneto, its slenderness ratio be up to 1:50, even higher; Motor inserting-coil can only adopt the method for artificial threading, the manufacturing process difficult; And ultra-fine long rotating shaft surface form and position tolerance is difficult to control, is not easy to mass production.The patent No. is 201010253462.6, and title is the oily direct-drive permanent-magnetism motor of diving.This patent Introduction be applied in a kind of special permanent magnet motor structure on the submersible screw pump, stator adopts skewed slot, permanent magnet adopts surface-mount type; Mention this oily direct-drive permanent-magnetism motor of diving and contain at least two magnetoes, the mutually same phase coil winding of each magneto is serially connected; If but wherein magneto one phase winding breaks down then whole latent oily direct-drive permanent magnet synchronous motor all quits work, and does not realize that each magneto electromagnetism is fully independent.In addition, the electric system of series operation is higher to the supply voltage class requirement; When the serial motor reaches some, even can't realize normal power supply.The above motor has all carried out resolution process to super slenderness ratio electric machine structure, but emphasis is had nothing in common with each other the real decoupling zero on realization machinery and the electromagnetism.
Summary of the invention
The problem that the present invention is difficult to realize for solving the manufacturing of super slenderness ratio electric machine structure technique, provide a kind of unit-combination type permanent magnet synchronous motor to consist of ultra-fine long structural electromotor, the motor of the super slenderness ratio structure of tradition is divided into unit-combination type permanent magnet synchronous motor (hereinafter all referred to as the unit motor) parallel running of some conventional slenderness ratios (the motor slenderness ratio is less than 1:5); System can be as required torque selected cell motor number of units, always export torque and be each unit motor output torque sum.
For achieving the above object, the present invention is by the following technical solutions:
The ultra-fine long structural electromotor that a kind of unit-combination type permanent magnet synchronous motor forms, by separately independently equidirectional being installed in the steel pipe successively of unit-combination type permanent magnet synchronous motor form, each unit motor three-phase winding parallel operation, it is characterized in that: rotor and stator core radially from inside to outside are installed in the rotating shaft of unit-combination type permanent magnet synchronous motor successively, the stator core two ends are installed with respectively upper end cover and bottom end cover, upper end cover is connected with rotating shaft by alignment bearing, bottom end cover is connected with rotating shaft by thrust bearing, stator winding is installed on the stator core, stator winding end is embedded with temperature sensor element, and the power supply of stator winding is connected with aviation socket by thermoswitch, the three-phase ac power cord two ends are connected in the pin and box sub of aviation socket, and the pin and box sub of aviation socket is installed in respectively on two end faces of upper end cover and bottom end cover.
Axial length≤the 1m of described unit-combination type permanent magnet synchronous motor.
Rotating shaft, upper end cover and bottom end cover all adopt non-magnet material to make.
Upper end cover and bottom end cover are fixed on the stator core two ends by trip bolt respectively, and tightening bolt are arranged respectively with upper end cover and bottom end cover tension.
Rotor is by a plurality of rotor secter pat spicing forming types, and the rotor secter pat directly is fixed in the rotating shaft by screw, between the adjacent rotor secter pat permanent magnet is installed.
Permanent magnet adopts the built-in cutting orientation structure of rectangular block.
The stator punching yoke section outside of stator core has the outer rim groove for the three-phase ac power cord cabling.
The stator core outer surface scribbles the heat-sensitive variable colour skin of paint.
The two ends of rotating shaft are respectively arranged with corresponding groove and boss, are respectively arranged with corresponding cylinder boss and cylindrical groove on the end face of upper end cover and bottom end cover, and also are provided with seam on the both ends of the surface.
Advantage of the present invention and effect are: the unit-combination type permanent magnet synchronous motor can individualism and can combination in any, has realized that machinery and electromagnetism are fully independent; Manufacturing, operation and the maintenance problem of super slenderness ratio structural electromotor have been solved well.
Description of drawings:
Fig. 1 is the structural representation of unit-combination type permanent magnet synchronous motor;
Fig. 2 is the longitudinal section view of unit-combination type permanent magnet synchronous motor;
Fig. 3 is the assembly connection schematic diagram of unit-combination type permanent magnet synchronous motor;
Description of reference numerals:
1. upper end cover, 2. alignment bearing, 3. rotating shaft, 4. rotor, 5. stator core, 6. thrust bearing, 7. bottom end cover, 8. thermoswitch, 9. tightening bolt, 10. screw, 11. three-phase ac power cords, 12. rotor secter pats, 13. stator winding, 14. outer rim grooves, 15. permanent magnets, 16. aviation sockets, 17. cylinder boss, 18. grooves, 19. seams, 20. trip bolts, 21. boss, 22. cylindrical grooves.
Embodiment:
The present invention is described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, 2, rotor 4 and stator core 5 are installed successively from inside to outside radially in the rotating shaft 3 of unit-combination type permanent magnet synchronous motor, stator core laminates moulding by punching outer rim groove 14 solder technology, and rotating shaft 3 adopts non-magnet material to make.This unit-combination type permanent magnet synchronous motor inorganic shell, axial length is below 1m, stator core 5 is respectively processed a step at two ends after by outer rim groove 14 welding fabrications and is cooperated with upper end cover 1 and bottom end cover 7 respectively, serve as the effect of common electric machine casing, upper end cover 1 and bottom end cover 7 all adopt non-magnet material to make.Upper end cover 1 and bottom end cover 7 are fixed on stator core 5 two ends by trip bolt 20, and tightening bolt 9 are arranged respectively with upper end cover 1 and bottom end cover 7 tensions.Because mostly this element combination type permanent-magnet synchronous motor is vertical placement, so select thrust bearing 6 to cooperate with bottom end cover 7, bears rotating shaft 3 axial loads; Alternative cooperates with upper end cover 1 with alignment bearing 2, guarantees that air gap is even.Present embodiment rotor 4 is by rotor secter pat 12 spicing forming types, is fastened in the rotating shaft 3 by screw 10, and permanent magnet 15 is installed between the adjacent rotor secter pat 12, and permanent magnet 15 adopts the built-in cutting orientation structure of rectangular block.
The longitudinal section view of unit-combination type permanent magnet synchronous motor adopts 24 grooves/8 utmost points to cooperate as shown in Figure 2 in the present embodiment; The stator winding 13 that is installed on the stator core 5 adopts the individual layer straight trough to cooperate, and greatly reduces the inserting-coil process difficulty of stator winding 13; Rotor-side, the special shape by rotor secter pat 12 is spliced to form non-homogeneous air gap, can well improve the performance parameter curve of unit-combination type permanent magnet synchronous motor.
The punching yoke section of stator core 5 has outer rim groove 14 for three-phase ac power cords 11 cablings, in the present embodiment three-phase ac power cord 11 two ends respectively be installed in upper end cover 1 and be connected with aviation socket 16 pin and box subs on bottom end cover 7 both ends of the surface.Stator winding 13 is installed on the stator core 5; stator winding 13 ends are embedded with temperature sensor element; and the power supply of stator winding 13 is connected on the aviation socket 16 by thermoswitch 8; and play the overload heat protective effect, when the overload temperature rise is too high, automatically this unit-combination type permanent magnet synchronous motor is excised from end aviation socket 16.In addition, scribble heat-sensitive variable colour paint at stator core 5 outer surfaces, paint automatic color-changing when temperature rise is too high can intuitively be identified trouble unit and in time replacement during maintenance.
The assembly connection schematic diagram of unit-combination type permanent magnet synchronous motor as shown in Figure 3, this element combination type permanent-magnet synchronous motor can individualism and can combination in any.Be respectively arranged with corresponding groove 18 and boss 21 at the two ends of rotating shaft 3, be respectively arranged with corresponding cylindrical groove 22 and cylinder boss 17 on the end face of upper end cover 1 and bottom end cover 7, the end face edge of two end cap also is provided with seam 19.When the ultra-fine long structural electromotor of assembling, each unit-combination type permanent magnet synchronous motor direction is according to the rules packed in the elongated steel pipe successively, groove 18 and boss 21 docking that adjacent two unit-combination type permanent magnet synchronous motors are adjusted first rotating shaft 3 ends embed, again by cylinder boss 17, cylindrical groove 18 leads, the aviation socket 16 pin and box sub automatic butt of adjacent two unit-combination type permanent magnet synchronous motors, at last by seam 19 location, each unit motor three-phase winding parallel operation, finish machinery and the electromagnetism restructuring of each unit-combination type permanent magnet synchronous motor, and finally form complete ultra-fine long structural electromotor.
Claims (5)
1. the ultra-fine long structural electromotor that forms of a unit-combination type permanent magnet synchronous motor, by separately independently equidirectional being installed in the steel pipe successively of unit-combination type permanent magnet synchronous motor form, each unit motor three-phase winding parallel operation, it is characterized in that: rotor (4) and stator core (5) radially from inside to outside are installed in the rotating shaft of unit-combination type permanent magnet synchronous motor (3) successively, stator core (5) two ends are installed with respectively upper end cover (1) and bottom end cover (7), upper end cover (1) is connected with rotating shaft (3) by alignment bearing (2), bottom end cover (7) is connected with rotating shaft (3) by thrust bearing (6), stator winding (13) is installed on the stator core (5), stator winding (13) end is embedded with temperature sensor element, and the power supply of stator winding (13) is connected with aviation socket (16) by thermoswitch (8), three-phase ac power cord (11) two ends are connected in the pin and box sub of aviation socket (16), and the pin and box sub of aviation socket (16) is installed in respectively on two end faces of upper end cover (1) and bottom end cover (7);
Axial length≤the 1m of described unit-combination type permanent magnet synchronous motor;
Rotating shaft (3), upper end cover (1) and bottom end cover (7) all adopt non-magnet material to make;
Upper end cover (1) and bottom end cover (7) are fixed on stator core (5) two ends by trip bolt (20) respectively, and tightening bolt (9) are arranged respectively with upper end cover (1) and bottom end cover (7) tension;
Rotor (4) is by rotor secter pat (12) spicing forming type, and rotor secter pat (12) directly is fixed in the rotating shaft (3) by screw (10), and permanent magnet (15) is installed between the adjacent rotor secter pat (12).
2. the ultra-fine long structural electromotor that forms of described unit-combination type permanent magnet synchronous motor according to claim 1, it is characterized in that: permanent magnet (15) adopts the built-in cutting orientation structure of rectangular block.
3. the ultra-fine long structural electromotor that forms of described unit-combination type permanent magnet synchronous motor according to claim 1, it is characterized in that: the stator punching yoke section outside of stator core (5) has the outer rim groove (14) for three-phase ac power cord (11) cabling.
4. the ultra-fine long structural electromotor that forms of described unit-combination type permanent magnet synchronous motor according to claim 1, it is characterized in that: stator core (5) outer surface scribbles the heat-sensitive variable colour skin of paint.
5. the ultra-fine long structural electromotor that forms of described unit-combination type permanent magnet synchronous motor according to claim 1, it is characterized in that: the two ends of rotating shaft (3) are respectively arranged with corresponding groove (18) and boss (21), be respectively arranged with corresponding cylinder boss (17) and cylindrical groove (22) on the end face of upper end cover (1) and bottom end cover (7), and also be provided with seam (19) on the both ends of the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101742077A CN102223032B (en) | 2011-06-27 | 2011-06-27 | Ultra-long structure motor composed of unit combined permanent magnet synchronous motors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101742077A CN102223032B (en) | 2011-06-27 | 2011-06-27 | Ultra-long structure motor composed of unit combined permanent magnet synchronous motors |
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| CN102223032A CN102223032A (en) | 2011-10-19 |
| CN102223032B true CN102223032B (en) | 2013-01-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753284B (en) * | 2013-12-27 | 2017-08-08 | 浙江中科德润科技有限公司 | Latent oil permagnetic synchronous motor |
| CN106451883B (en) * | 2016-11-30 | 2019-07-19 | 浙江雅虎汽车部件有限公司 | Automobile waist support motor |
| CN106972719A (en) * | 2017-05-19 | 2017-07-21 | 宁德时代电机科技有限公司 | A kind of high-power density permanent magnetic double external rotor air compressor motor device |
| CN113612348B (en) * | 2021-10-08 | 2021-12-21 | 东营市丰润通科技发展有限公司 | Submersible screw pump based on ultra-low speed multi-rotor permanent magnet submersible motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2402976B (en) * | 2003-06-05 | 2006-09-27 | Intec Power Systems Ltd | Generator |
| CN1858972A (en) * | 2006-05-25 | 2006-11-08 | 沈阳工大新新科技开发有限公司 | Chain rare-earth permanent magnetic synchronous motor driving device for oil submersible screw pump |
| CN101877521B (en) * | 2009-04-30 | 2013-01-02 | 浙江中科德润科技有限公司 | Multi-section servo submersible motor |
| CN202094775U (en) * | 2011-06-27 | 2011-12-28 | 沈阳工业大学 | Ultra long and thin motor composed by unit combined type permanent-magnet synchronous motors |
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- 2011-06-27 CN CN2011101742077A patent/CN102223032B/en not_active Expired - Fee Related
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Effective date of registration: 20181107 Address after: 166300 nine village, Qixin village, Huayuan Town, Lindian County, Daqing, Heilongjiang. Patentee after: HEILONGJIANG RUIXIN PERMANENT MAGNET MOTOR MANUFACTURING Co.,Ltd. Address before: 110870 No. 111 Shenyang West Road, Shenyang economic and Technological Development Zone, Liaoning Patentee before: Shenyang University of Technology |
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Effective date of registration: 20220525 Address after: 166300 Hua Yuan Zhen Qi Xin Cun, Lindian County, Daqing City, Heilongjiang Province Patentee after: Heilongjiang baishen Environmental Protection Technology Co.,Ltd. Address before: 166300 nine village, Qixin village, Huayuan Town, Lindian County, Daqing, Heilongjiang. Patentee before: HEILONGJIANG RUIXIN PERMANENT MAGNET MOTOR MANUFACTURING Co.,Ltd. |
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