CN201563041U - Permanent magnetic synchronous motor with double stators and double rotors - Google Patents
Permanent magnetic synchronous motor with double stators and double rotors Download PDFInfo
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- CN201563041U CN201563041U CN2009202669861U CN200920266986U CN201563041U CN 201563041 U CN201563041 U CN 201563041U CN 2009202669861 U CN2009202669861 U CN 2009202669861U CN 200920266986 U CN200920266986 U CN 200920266986U CN 201563041 U CN201563041 U CN 201563041U
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Abstract
The utility model discloses a permanent magnetic synchronous motor with double stators and double rotors, comprising a motor box body, a motor spindle, a front end cover assembly and a rear end cover assembly. A shaft shoulder is arranged on the middle portion of the motor spindle, a motor front rotor and a motor rear rotor are sleeved on the motor spindle, the motor front rotor and the motor rear rotor are respectively abutted with two sides of the shaft shoulder, a motor front stator, a motor rear stator and a guide ring are sleeved inside the motor box body, the guide ring is arranged between the motor front stator and the motor rear stator, the motor front stator and the motor rear stator are peripherally positioned via a guide pin penetrating on the guide ring, initial positions of phases of the motor front stator and the motor rear stator are aligned to each other, the motor spindle is assembled inside the motor front stator and the motor rear stator, the position of the motor front rotor corresponds to that of the motor front stator, the position of the motor rear rotor corresponds to that of the motor rear stator, the front end cover assembly is assembled at the front end of the motor box body, and the rear end cover assembly is assembled at the rear end of the motor box body. The permanent magnetic synchronous motor has the advantages of high power and high rotation speed.
Description
Technical field
The utility model relates to mechanical manufacturing field, relates in particular to the permanent magnet synchronous high-speed heavy-duty motor.
Background technology
The large high-speed rotating machinery is widely used in fields such as national defence, metallurgy, mine, chemical industry, as all kinds of large fans, turbocompressor, ship power system and centrifugal compressor etc.The large high-speed rotating machinery occupies extremely important status in Chinese national economy.
Traditional high-speed rotating machine equipment adopts drive system (belt transmission, gearbox drive etc.) to realize speedup more, and power source mostly is common electric machine.The high workload rotating speed that adopts that the rotating machinery of this class kind of drive allows is lower, because the drive system complexity, vibration noise is big during work, and the fault point is many, and maintenance is complicated, particularly is unfavorable for realizing stepless speed regulation, energy consumption height, inefficiency.
In order to realize stepless speed regulation, energy-saving and cost-reducing, improve the maximal work rotating speed of rotating machinery, the development trend of large high-speed rotating machinery is that the high-speed electric expreess locomotive that directly adopts the variable frequency power supply driving replaces traditional common electric machine and gearbox system as power source.The product of the height electromechanical integration of various advanced technologies such as that this high-speed electric expreess locomotive is integrated is mechanical, electric, control, power electronics and new material.Its characteristics are, the function of motor and traditional drive systems such as gear box are combined together from structure, saved complicated middle transmission link, had that speed-regulating range width, moment of inertia are little, consuming little energy, high efficiency, be easy to realize advantages such as stepless speed regulation and accurate control.Along with modern equipment manufacture constantly develops to high-speed, high efficiency, low energy consumption, high automation direction, the skill upgrading of high-speed electric expreess locomotive and structure innovation seem more and more urgent.
High-speed electric expreess locomotive can be divided into direct current machine and alternating current machine by the machine operation principle.Because ac variable speed technology is full-fledged, alternating current machine replaces the main trend that direct current machine has become development.Exchange high-speed electric expreess locomotive and can be divided into AC induction motor and ac synchronous motor according to type.Compare with AC induction motor, synchronous machine power factor (PF) height, high efficiency, energy conservation and consumption reduction effects is obvious; Its rotor does not generate heat, and helps reducing the temperature rise of main shaft and bearing; Particularly adopt the synchronous machine of permanent magnet, because power density is big, in light weight, volume is little, is very beneficial for improving the critical whirling speed of rotor-support-foundation system as rotor.The permanent magnet synchronous high-speed motor has become the high-tech product that develops mutually unexpectedly at present both at home and abroad.
Limited by the magneto operation principle, permagnetic synchronous motor will be realized very difficulty of high speed and high-power simultaneously, cause failing at present obtaining using fully widely (often requiring power as the motor in the blast furnace blower is that 315kw, rotating speed are 18000rpm, and adopts the permagnetic synchronous motor of single rotor form to be difficult to realize) in the high-speed high-power occasion.Domestic existing permagnetic synchronous motor structure is single electric machine rotor.Adopt the permanent magnet synchronous high-speed motor of single motor rotor, power capacity is low.The measure of the power of permanent magnet synchronous high-speed motor raising at present can improve the power of motor capacity by length and the diameter that increases single electric machine rotor.Yet, the number of pole-pairs that need increase circumferencial direction when increasing stator diameter could improve power of motor, if number of pole-pairs is many, magnetic density can increase, but the mechanical separator speed of motor under same frequency of supply will reduce, and for the high-speed synchronous motor, this has increased the difficulty of motor high speed; If number of pole-pairs is few, magnetic density will reduce, and can restrict the raising of power of motor; If the increase root diameter, the rotor surface linear velocity increases, because centrifugal force is directly proportional with radius squared, causes the rotor strength requirement to increase, and functional reliability reduces.Therefore, can only consider to improve power of motor by the method that increases electric machine rotor length, but, along with electric machine rotor length increases, the stator winding technology difficulty increases, this measure can improve power of motor to a certain extent according to present permanent magnet synchronous high-speed design of electrical motor manufacturing technology level, but recruitment is very limited, usually only be suitable for motor less than 200kw, by length and the diameter that increases single electric machine rotor, make power of motor be promoted to 315kw, rotating speed is promoted to 18000rpm and is difficult to very much realize.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of high-power, high-revolving dual stator and rotor permanent magnet synchronous motor is provided.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of dual stator and rotor permanent magnet synchronous motor, comprise motor case body, electric machine main shaft, front end cover assembly and rear end cap assembly, described electric machine main shaft middle part is provided with the shaft shoulder, be set with before the motor rotor behind the rotor and motor on the electric machine main shaft, rotor is respectively near shaft shoulder both sides behind preceding rotor of described motor and the motor, be set with the preceding stator of motor in the described motor case body, stator and guide ring behind the motor, described guide ring is located at before the motor behind the stator and motor between the stator, stator is circumferentially located through the guide finger that is arranged on the guide ring behind the preceding Stator and electrical machine of described motor, the phase place original position of stator alignment behind the Stator and electrical machine before the motor, described electric machine main shaft is installed in before the motor behind the Stator and electrical machine in the stator, rotor is corresponding with position of stator before the motor before the motor, rotor is corresponding with position of stator behind the motor behind the motor, described front end cover assembly is installed in the motor case body front end, and described rear end cap assembly is installed in the motor case body rear end.
Described motor case body front end is equiped with preceding retainer ring, and described preceding retainer ring is fixedlyed connected with stator before the motor, and described motor case body rear end is equiped with the back retainer ring, and described back retainer ring is fixedlyed connected with stator behind the motor.
Be provided with the preceding disc that is sheathed on the electric machine main shaft between described front end cover assembly and the preceding retainer ring, be provided with the back disc that is sheathed on the electric machine main shaft between described rear end cap assembly and the back retainer ring.
Described front end cover assembly comprises front end housing flange and fore bearing, described front end housing flange is fixed in the motor case body front end, described fore bearing is supported between electric machine main shaft and the front end housing flange, described rear end cap assembly comprises rear end cap flange and rear bearing, described rear end cap flange is fixed in the motor case body front end, and described rear bearing is supported between electric machine main shaft and the rear end cap flange.
Described fore bearing and rear bearing are tilting-pad bearing.
Be equiped with motor encoder on the described rear end cap assembly.
Compared with prior art, advantage of the present utility model is: dual stator and rotor permanent magnet synchronous motor of the present utility model is by being installed in two cover motor stators and rotor in the motor case body, guiding at guide ring and guide finger, circumferentially under the positioning action, reduced before the motor behind the stator and motor the error of phase place original position between the stator to greatest extent, moment of torsion interference between the two cover rotors is reduced greatly, the double stators and double rotors of motor is kept synchronously, overcome the little restriction of the single rotor power capacity of permagnetic synchronous motor in the past, avoided increasing the technology difficult problem that single electric machine rotor length and diameter bring, widened the scope of application of permagnetic synchronous motor, made high rotating speed, powerful permagnetic synchronous motor is achieved.The back retainer ring of stator can not only carry out the axial and circumferential location to stator behind the Stator and electrical machine before the motor behind the preceding retainer ring of the preceding stator of motor and the motor; and can the stop portions front end cover assembly and the rear end cap assembly in lubricant medium pollute electric machine rotor, electric machine rotor is played the certain protection effect.Disc and back disc before electric machine main shaft is provided with, lubricant medium before falling on disc and the back disc is thrown to the motor case body inwall under the effect of high speed rotating, drainback passage from the motor case body flows out again, preceding disc and back disc can prevent that lubricant medium from flowing on the rotor along electric machine main shaft, under the mating reaction of preceding disc and preceding retainer ring, back disc and back retainer ring, make electric machine rotor and front end cover assembly and rear end cap assembly isolated, avoid contaminated, the corrosion of electric machine rotor.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the position mark schematic diagram when packing motor stator into motor case body.
Each label is represented among the figure:
1, motor case body 2, electric machine main shaft
3, front end cover assembly 4, rear end cap assembly
5, preceding retainer ring 6, back retainer ring
7, preceding disc 8, back disc
11, stator behind the preceding stator 12 of motor, the motor
13, guide ring 14, guide finger
21, rotor before the shaft shoulder 22, the motor
23, rotor 24, motor encoder behind the motor
31, front end housing flange 32, fore bearing
41, rear end cap flange 42, rear bearing
Embodiment
Below in conjunction with accompanying drawing dual stator and rotor permanent magnet synchronous motor of the present utility model is described in further detail.
As depicted in figs. 1 and 2, dual stator and rotor permanent magnet synchronous motor of the present utility model, comprise motor case body 1, electric machine main shaft 2, front end cover assembly 3 and rear end cap assembly 4, electric machine main shaft 2 middle parts are provided with the shaft shoulder 21, be set with before the motor rotor 23 behind the rotor 22 and motor on the electric machine main shaft 2, rotor 23 is respectively near the shaft shoulder 21 both sides behind preceding rotor 22 of motor and the motor, be set with the preceding stator 11 of motor in the motor case body 1, stator 12 and guide ring 13 behind the motor, guide ring 13 is located at before the motor behind the stator 11 and motor between the stator 12, stator 12 is circumferentially located through the guide finger 14 that is arranged on the guide ring 13 behind preceding stator 11 of motor and the motor, electric machine main shaft 2 is installed in the motor case body 1, the phase place original position of stator 12 alignment behind stator 11 and the motor before the motor, rotor 22 is corresponding with stator 11 positions before the motor before the motor, rotor 23 is corresponding with stator 12 positions behind the motor behind the motor, front end cover assembly 3 is installed in motor case body 1 front end, rear end cap assembly 4 is installed in motor case body 1 rear end, is equiped with motor encoder 24 on the rear end cap assembly 4.Dual stator and rotor permanent magnet synchronous motor of the present utility model is by being installed in two cover electric machine rotors in the motor case body 1, guiding at guide ring 13 and guide finger 14, circumferentially under the positioning action, reduced before the motor behind the stator 11 and motor the error of phase place original position between the stator 12 to greatest extent, moment of torsion interference between the two cover rotors is reduced greatly, the double stators and double rotors of motor is kept synchronously, overcome the little restriction of the single rotor power capacity of permagnetic synchronous motor in the past, avoided increasing the technology difficult problem that single electric machine rotor length and diameter bring, widened the scope of application of permagnetic synchronous motor, made high rotating speed, powerful permagnetic synchronous motor is achieved.Stator 11 is equiped with preceding retainer ring 5 near an end of front end cover assembly 3 before the motor, preceding retainer ring 5 is fixedlyed connected with stator 11 before the motor, stator 12 is equiped with back retainer ring 6 near an end of rear end cap assembly 4 behind the motor, and back retainer ring 6 is fixedlyed connected with stator 12 behind the motor.The back retainer ring 6 of stator 12 can not only carry out the axial and circumferential location to stator behind stator before the motor 11 and the motor 12 behind the preceding retainer ring 5 of the preceding stator 11 of motor and the motor; and can stop portions front end cover assembly 3 and rear end cap assembly 4 in lubricant medium pollute electric machine rotor, electric machine rotor is played the certain protection effect.Be provided with the preceding disc 7 that is sheathed on the electric machine main shaft 2 between front end cover assembly 3 and the preceding retainer ring 5, be provided with the back disc 8 that is sheathed on the electric machine main shaft 2 between rear end cap assembly 4 and the back retainer ring 6, lubricant medium before falling on disc 7 and the back disc 8 is being thrown under the effect of high speed rotating on the inwall of motor case body 1, drainback passage from the motor case body 1 flows out again, preceding disc 7 and back disc 8 can prevent that also lubricant medium from flowing on the rotor along electric machine main shaft 2, at preceding disc 7 and preceding retainer ring 5, under the mating reaction of back disc 8 and back retainer ring 6, make electric machine rotor and front end cover assembly 3 and rear end cap assembly 4 isolated, avoid electric machine rotor contaminated, corrosion, prolong the useful life of electric machine rotor, improved the stability of motor rotation.Front end cover assembly 3 comprises front end housing flange 31 and fore bearing 32, front end housing flange 31 is fixed in motor case body 1 front end, fore bearing 32 is supported between electric machine main shaft 2 and the front end housing flange 31, rear end cap assembly 4 comprises rear end cap flange 41 and rear bearing 42, rear end cap flange 41 is fixed in motor case body 1 front end, and rear bearing 42 is supported between electric machine main shaft 2 and the rear end cap flange 41.Fore bearing 32 and rear bearing 42 are tilting-pad bearing.Front end housing flange 31 and rear end cap flange 41 can whole be processed with the endoporus of motor case body 1, help guaranteeing the axiality of axis system, and technology are simple relatively, has reduced processing cost.
When dual stator and rotor permanent magnet synchronous motor is installed, if the phase place original position of two motor stators is inconsistent, can cause two cover rotors separately to the moment of torsion life period difference of same electric machine main shaft 2 outputs and the phase mutual interference, power output is greatly reduced, even do not have moment of torsion and export, therefore, the synchronism of assurance double stators and double rotors just becomes the key point that dual stator and rotor permanent magnet synchronous motor significantly improves power, rotating speed; And in the present motor assembly technology, motor stator and motor case body 1 are the interference assembling, no matter be in loading procedure, still after packing into, motor stator almost can not be adjusted with respect to the circumferential position of motor case body 1, and motor case body 1 inner space is narrow and small, when being installed, two stator can not whether align from motor case body 1 inner phase place original position of observing two motor stators, the phase place original position of two motor stators is consistent on circumferential direction, has very big difficulty.Be described in further detail below in conjunction with the assembly method of accompanying drawing dual stator and rotor permanent magnet synchronous motor of the present utility model.
As depicted in figs. 1 and 2, the assembly method of dual stator and rotor permanent magnet synchronous motor of the present utility model, its step be,
(1), rotor is loaded on the electric machine main shaft 2, two rotors of installing on electric machine main shaft 2, two rotors are set on the electric machine main shaft 2 from the rear and front end of electric machine main shaft 2 respectively, be positioned at the rotor 22 before the motor that is of front end, what be positioned at the rear end is rotor 23 behind the motor, makes each rotor be close to the set shaft shoulder 21 in electric machine main shaft 2 middle parts; Motor stator is loaded in the motor case body 1, two motor stators of installing and a guide ring 13 in motor case body 1, earlier guide ring 13 and each motor stator are joined the brill pilot hole, primary importance mark a is set on guide ring 13 simultaneously, primary importance mark a when joining brill on the assurance guide ring 13 aims at the phase place original position c on the motor stator, guide ring 13 and a motor stator is fixing by guide finger 14, keep joining the relative position when boring in the time of fixedly, the motor stator that will have guide ring 13 earlier motor case body 1 one ends of packing into, make second place mark b according to the primary importance mark a of guide ring 13 or the phase place original position c on this motor stator at motor case body 1 other end when packing into, again the phase place original position c on another motor stator to be installed is aimed at and the motor case body 1 of packing into second place mark b on the motor case body 1, from motor case body 1 front loaded be stator 11 before the motor, that packs into from motor case body 1 rear end is stator 12 behind the motor.
(2), be used for motor stator axial limiting and circumferential retainer ring of locating in the installing of motor case body 1 two ends, be positioned at the preceding retainer ring 5 that is of motor case body 1 front end, what be positioned at motor case body 1 rear end is back retainer ring 6, rotor is packed in the motor stator together with electric machine main shaft 2, rotor 22 is corresponding with stator 11 positions before the motor before making motor during installation, rotor 23 is corresponding with stator 12 positions behind the motor behind the motor, a disc is set between front end cover assembly 3 and retainer ring afterwards, a disc is set between rear end cap assembly 4 and retainer ring, two discs all are sheathed on the electric machine main shaft 2.
(3), the front end cover assembly 3 and the rear end cap assembly 4 of motor are installed.
(4), on rear end cap assembly 4, install motor encoder 24, with the control line of preceding rotor and the back rotor motor encoder 24 that inserts in parallel.
The assembly method of dual stator and rotor permanent magnet synchronous motor of the present utility model, when packing motor stator into, utilize guide finger 14 and join the guide ring 13 that bores pilot hole with two motor stators and lead, and before being installed, second motor stator made position mark in motor case body 1 end according to the phase place original position of first motor stator, be convenient to when second motor stator is installed, the phase place original position of this motor stator be aimed at the position mark on the motor case body 1, make the phase place original position basically identical of two motor stators, and finally the guiding by guide ring 13 and guide finger 14 makes the phase place original position of two motor stators keep accurate consistency, realize double stators and double rotors run-in synchronism, improve the moment of torsion output of magneto, significantly improve power of motor and rotating speed.The assembly method simple possible of dual stator and rotor permanent magnet synchronous motor of the present utility model, be convenient to the operation.
The foregoing description only is a preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from principle of the present utility model; can also make some equivalents, these equivalents all should be considered as protection range of the present utility model.
Claims (6)
1. dual stator and rotor permanent magnet synchronous motor, comprise motor case body (1), electric machine main shaft (2), front end cover assembly (3) and rear end cap assembly (4), it is characterized in that: described electric machine main shaft (2) middle part is provided with the shaft shoulder (21), be set with before the motor rotor (23) behind the rotor (22) and motor on the electric machine main shaft (2), rotor (23) is respectively near the shaft shoulder (21) both sides behind preceding rotor (22) of described motor and the motor, be set with the preceding stator (11) of motor in the described motor case body (1), stator behind the motor (12) and guide ring (13), described guide ring (13) is located at before the motor behind the stator (11) and motor between the stator (12), stator (12) is circumferentially located through the guide finger (14) that is arranged on the guide ring (13) behind preceding stator (11) of described motor and the motor, the phase place original position of stator (12) alignment behind stator (11) and the motor before the motor, described electric machine main shaft (2) is installed in before the motor behind the stator (11) and motor in the stator (12), rotor (22) is corresponding with stator (11) position before the motor before the motor, rotor behind the motor (23) is corresponding with stator (12) position behind the motor, described front end cover assembly (3) is installed in motor case body (1) front end, and described rear end cap assembly (4) is installed in motor case body (1) rear end.
2. dual stator and rotor permanent magnet synchronous motor according to claim 1, it is characterized in that: described motor case body (1) front end is equiped with preceding retainer ring (5), retainer ring (5) is fixedlyed connected with stator (11) before the motor before described, described motor case body (1) rear end is equiped with back retainer ring (6), and described back retainer ring (6) is fixedlyed connected with stator (12) behind the motor.
3. dual stator and rotor permanent magnet synchronous motor according to claim 2, it is characterized in that: be provided with the preceding disc (7) that is sheathed on the electric machine main shaft (2) between described front end cover assembly (3) and the preceding retainer ring (5), be provided with the back disc (8) that is sheathed on the electric machine main shaft (2) between described rear end cap assembly (4) and the back retainer ring (6).
4. according to each described dual stator and rotor permanent magnet synchronous motor in the claim 1 to 3, it is characterized in that: described front end cover assembly (3) comprises front end housing flange (31) and fore bearing (32), described front end housing flange (31) is fixed in motor case body (1) front end, described fore bearing (32) is supported between electric machine main shaft (2) and the front end housing flange (31), described rear end cap assembly (4) comprises rear end cap flange (41) and rear bearing (42), described rear end cap flange (41) is fixed in motor case body (1) front end, and described rear bearing (42) is supported between electric machine main shaft (2) and the rear end cap flange (41).
5. dual stator and rotor permanent magnet synchronous motor according to claim 4 is characterized in that: described fore bearing (32) and rear bearing (42) are tilting-pad bearing.
6. dual stator and rotor permanent magnet synchronous motor according to claim 5 is characterized in that: be equiped with motor encoder (24) on the described rear end cap assembly (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202669861U CN201563041U (en) | 2009-11-06 | 2009-11-06 | Permanent magnetic synchronous motor with double stators and double rotors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202669861U CN201563041U (en) | 2009-11-06 | 2009-11-06 | Permanent magnetic synchronous motor with double stators and double rotors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201563041U true CN201563041U (en) | 2010-08-25 |
Family
ID=42628190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202669861U Expired - Fee Related CN201563041U (en) | 2009-11-06 | 2009-11-06 | Permanent magnetic synchronous motor with double stators and double rotors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201563041U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017058129A1 (en) | 2015-09-29 | 2017-04-06 | Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi | An electromotor |
| CN106787539A (en) * | 2017-04-06 | 2017-05-31 | 宁德时代电机科技有限公司 | A kind of high-power dual stator and rotor permanent magnet external rotor motor device of high power density |
| EP3396824A4 (en) * | 2016-02-04 | 2018-10-31 | Jing-Jin Electric Technologies Co., Ltd | Integrated motor |
-
2009
- 2009-11-06 CN CN2009202669861U patent/CN201563041U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017058129A1 (en) | 2015-09-29 | 2017-04-06 | Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi | An electromotor |
| EP3396824A4 (en) * | 2016-02-04 | 2018-10-31 | Jing-Jin Electric Technologies Co., Ltd | Integrated motor |
| US11289983B2 (en) | 2016-02-04 | 2022-03-29 | Jing-Jin Electric Technologies Co., Ltd. | Integrated electrical motor |
| CN106787539A (en) * | 2017-04-06 | 2017-05-31 | 宁德时代电机科技有限公司 | A kind of high-power dual stator and rotor permanent magnet external rotor motor device of high power density |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20111106 |