CN204186801U - A kind of low power consumption axial hybrid magnetic bearing - Google Patents
A kind of low power consumption axial hybrid magnetic bearing Download PDFInfo
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- CN204186801U CN204186801U CN201420501257.0U CN201420501257U CN204186801U CN 204186801 U CN204186801 U CN 204186801U CN 201420501257 U CN201420501257 U CN 201420501257U CN 204186801 U CN204186801 U CN 204186801U
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Abstract
A kind of low power consumption axial hybrid magnetic bearing, its composition comprises stator disc, suction dish, permanent-magnetic clamp, magnetism resistent ring, rotating shaft and control coil winding.Stator disc is made up of electric steel, and permanent-magnetic clamp is mounted on two stator disc outboard shafts between stator tooth end face.Two magnetism resistent rings are mounted on respectively and are combined into both sides inside and outside entirety by permanent-magnetic clamp and two stator disc outboard shafts to stator tooth, and control coil winding is wound in the annular groove be made up of to stator tooth, radial stator tooth and suction dish stator disc inner shafts respectively.Suction dish is disc-shape, is also made up of electric steel, and be placed between two stator discs, disc centre is sleeved in rotating shaft.Permanent-magnetic clamp, stator disc, axial air-gap and suction dish form complete axle, radial static magnetic bias flux circuit; Stator disc, axial air-gap, radial air gap and suction dish form complete control magnetic flux loop.The utility model have low in energy consumption, volume is little, lightweight, structure simple, it is convenient to control, be easy to the advantages such as realization.
Description
Technical field
The utility model relates to a kind of mechanical contact magnetic bearing, refers in particular to a kind of Novel low power consumption axial mixed magnetic bearing, is applicable to the contactless suspension bearing of axis of the high speed transmission fields such as high-speed flywheel energy storage, high-speed electric main shaft, bearing-free motor.
Background technique
Magnetic suspension bearing (magnetic bearing) is a kind of bearing utilizing electromagnetic force to realize rotor-support-foundation system mechanical contact stabilization suspension operation.Relative to conventional mechanical bearings, magnetic bearing has without friction, without advantages such as wearing and tearing, high speed, noise little and life-span are long.Owing to not having Mechanical Contact between rotor, the rotor of magnetic bearing can reach very high rotating speed, so be with a wide range of applications at high speed transmission fields such as high-speed flywheel energy storage, high-speed electric main shaft, bearing-free motors.
According to the difference of excitation mode, magnetic bearing can be divided into active magnetic bearings, passive magnetic bearing and hybrid magnetic bearing (permanent magnet biased hybrid magnetic bearing).Because hybrid magnetic bearing uses the magnetic field of permanent magnet generation as quiescent biasing magnetic field, not only make the Number of ampere turns of electromagnet reduce, greatly reduce the power consumption of power amplifier, but also reduce the volume of magnetic bearing, alleviate its weight.
The permanent-magnetic biased axial magnetic bearing of research is both at home and abroad broadly divided into three kinds in structural type at present: one is that permanent magnet is placed in rotor, but its installation difficulty increases, and limits its high speed operation; Suspended rotor (being generally suction dish) is placed in the both sides of stator by the second magnetic bearing, and axial length increases, and critical speed of rotation is low; Axially control magnetic flux in the third magnetic bearing through permanent magnet, but be obvious demagnetizing effect to permanent magnet, leakage field is comparatively large, is restricted in high speed, efficiently application.
Model utility content
The purpose of this utility model is: overcome the deficiencies in the prior art, proposes a kind of Novel low power consumption axial mixed magnetic bearing.This magnetic bearing have low in energy consumption, volume is little, lightweight, structure simple, it is convenient to control, be easy to the advantages such as realization.
Technical solution of the present utility model is:
A kind of low power consumption axial hybrid magnetic bearing, comprises stator module and rotor assembly;
Described stator module comprises two stator discs, a permanent-magnetic clamp, two magnetism resistent rings, two cover control coil windings;
Described stator disc side axial cross section is " F " type, described stator disc is divided into the first stator disc, the second stator disc, described first stator disc has the first outboard shafts to stator tooth, the first inner shafts to stator tooth, the first radial stator tooth, and described second stator disc has the second outboard shafts to stator tooth, the second inner shafts to stator tooth, the second radial stator tooth; Together with described permanent-magnetic clamp is mounted on to stator tooth and described second outboard shafts to the end face of stator tooth with described first outboard shafts respectively; Described magnetism resistent ring is divided into the first magnetism resistent ring, the second magnetism resistent ring, and described first magnetism resistent ring, described second magnetism resistent ring are mounted on respectively and are combined into entirety inside and outside both sides to stator tooth, the second outboard shafts to stator tooth by described permanent-magnetic clamp, the first outboard shafts; Described control coil winding is divided into the first control coil winding, the second control coil winding, described control coil winding is wound in the annular groove that is made up of to stator tooth, the second inner shafts to stator tooth, the first radial stator tooth, the second radial stator tooth, suction dish described first inner shafts respectively, controls magnetic flux in order to produce;
Described rotor assembly comprises suction dish and rotating shaft, and described suction dish is disc-shape, be placed in described first inner shafts to stator tooth and the second inner shafts to stator tooth between, disc centre is sleeved in rotating shaft;
Described first inner shafts forms axial air-gap to stator tooth, the second inner shafts between stator tooth and described suction dish; Described first radial stator tooth, between the second radial stator tooth and described suction dish, form radial air gap; Described permanent-magnetic clamp, stator disc, axial air-gap, suction dish form complete axle, radial quiescent biasing flux circuit, and described suction dish is connected in the middle of axle, radial offset magnetic circuit; Described stator disc, axial air-gap, radial air gap, suction dish form complete control magnetic flux loop.
Further, described permanent-magnetic clamp is ring and axial charging, is made up of rare earth material neodymium iron boron.
Further, described first magnetism resistent ring, described second magnetism resistent ring size are identical, and are non-magnet material.
Further, described first magnetism resistent ring, described second magnetism resistent ring are formed by aluminium, epoxide resin material.
Further, described first stator disc, described second stator disc outer surface are disc-shapes, and make by electric steel, structure is identical.
Further, described first control coil winding, the second control coil winding can be connected in series, and two independent winding also can be divided into control respectively.
Compared with prior art, the advantage had is the utility model:
Effectively reduce the possibility of permanent magnet irreversible demagnetization, and facilitate the control of active levitation; The magnetic field utilizing permanent magnetic field to replace electromagnet to produce is used as quiescent biasing magnetic field, decreases electromagnet Number of ampere turns, reduces magnetic bearing volume, reduces power cost of power amplifier, improves magnetic bearing bearing capacity; Permanent magnet is placed in rotor, and not only installation difficulty is large, and the rigidity of rotor is reduced, and reduces the critical speed of rotation of rotor.Permanent magnet is embedded in stator disk by the utility model, improves rigidity and the critical speed of rotation of rotor, and efficiently avoid control magnetic flux to the degaussing of permanent magnet; Due to the use of magnetism resistent ring, greatly reduce the leakage field of permanent magnet, improve the stability of hybrid magnetic bearing; Structure is simple, control convenient and be easy to realize.
Accompanying drawing explanation
Fig. 1 is axial cross section and the flux circuit schematic diagram of Novel low power consumption axial mixed magnetic bearing.
Fig. 2 is the radial cross section schematic top plan view of Novel low power consumption axial mixed magnetic bearing stator disc.
In figure: 1-first stator disc; 2-second stator disc; 3-first magnetism resistent ring; 4-second magnetism resistent ring; 5-permanent-magnetic clamp; 6-suction dish; 7-first axle, radial quiescent biasing flux circuit; 8-axial air-gap; 9-first control coil winding; 10-second control coil winding; 11-first control magnetic flux loop; 12-second control magnetic flux loop; 13-radial air gap; 14-second axle, radial quiescent biasing flux circuit; 15-rotating shaft; 16-first outboard shafts is to stator tooth; 17-second outboard shafts is to stator tooth; 18-first inner shafts is to stator tooth; 19-second inner shafts is to stator tooth; 20-first radial stator tooth; 21-second radial stator tooth.
Embodiment
Fig. 1 is axial cross section and the flux circuit schematic diagram of Novel low power consumption axial mixed magnetic bearing, and Fig. 2 is the radial cross section schematic top plan view of Novel low power consumption axial mixed magnetic bearing stator disc.First stator disc 1, second stator disc 2 axial cross section is " F " type, be made up of electric steel, ring permanent-magnetic clamp 5 adopts rare earth material neodymium iron boron to make and axial charging, respectively with the first stator disc 1, first outboard shafts of the second stator disc 2 is to stator tooth 16, second outboard shafts is mounted on together to stator tooth 17 end face, the first magnetism resistent ring 3 be made up of non-magnet material, second magnetism resistent ring 4 is mounted on respectively and is combined into entirety inside and outside both sides to stator tooth 16 and described second outboard shafts to stator tooth 17 by permanent-magnetic clamp 5 and the first outboard shafts, effectively to reduce the leakage field of permanent magnet, first control coil winding 9, second control coil winding 10 is wound in by inner shafts respectively to stator tooth, in the annular groove that radial stator tooth and suction dish form, magnetic flux is controlled in order to produce.Suction dish 6 is disc-shapes, is also made up of electric steel, be placed in the first inner shafts to stator tooth 18, second inner shafts to stator tooth 19 between, disc centre is sleeved in rotating shaft 15.First inner shafts of the first stator disc 1, second stator disc 2 forms axial air-gap 8 to stator tooth 18, second inner shafts between stator tooth 19 and suction dish 6, forms radial air gap 13 between the first radial stator tooth 20, second radial stator tooth 21 and suction dish 6.Permanent-magnetic clamp 5, stator disc, axial air-gap 8 and suction dish 6 form complete axle, radial static magnetic bias flux circuit, and as shown in the solid line with arrow in Fig. 1, suction dish 6 is connected in the middle of axle, radial offset magnetic circuit; Stator disc, axial air-gap 8, radial air gap 13 and suction dish 6 form complete control magnetic flux loop, as shown in the dotted line with arrow in Fig. 1.
The radial stator tooth of described stator disc only as biased magnetic flux and the magnetic circuit controlling magnetic flux, and does not produce suspending power.
Its basic functional principle: when suction dish 6 mediates, namely during equilibrium position, due to the symmetry properties of its structure, the magnetic flux that permanent-magnetic clamp 5 produces is equal at the air gap on suction dish 6 left side with the air gap place on the right, now, suction dish 6 left side is equal with the suction that the right is subject to; Suction dish 6 is equal to the air gap between stator tooth with left and right stator disc inner shafts, and namely left and right gap length is g
0, suppose that now suction dish is subject to a disturbing force to the right, suction dish 6 moves right, the air gap on the left side is caused to become large, the air gap on the right diminishes, and has magnetic flux to flow into axialy offset magnetic circuit in radial offset magnetic circuit, causes the magnetic flux at air gap place, the left side to be less than the magnetic flux at air gap place, the right.According to square being directly proportional of the magnetic attraction force when magnetic pole area is certain and magnetic field magnetic flux, so suction is to the right greater than suction left, do not having under extraneous help, suction dish 6 cannot get back to equilibrium position.Now, displacement transducer detects that suction dish 6 departs from reference position displacement amount to the right, and controller converts this displacement signal to control electric current, and this electric current ramp metering winding, sets up a controlling magnetic field in iron core and air gap.Biased magnetic flux in the air gap of the right subtracts each other with control magnetic flux, and the magnetic flux in the air gap of the right is reduced; And the biased magnetic flux in the air gap of the left side is added with control magnetic flux, the magnetic flux in the air gap of the left side is increased.Like this, produce a suction left, suction dish is retracted equilibrium position.In like manner, when suction dish 6 is subject to a disturbing force left, analytic process is similar therewith, just has magnetic flux to flow into radial offset magnetic circuit in axialy offset magnetic circuit, causes the magnetic flux at air gap place, the left side to be greater than the magnetic flux at air gap place, the right.Like this, suction dish 6, by carrying out the size of electric current in regulable control winding with the degenerative controller of displacement, can be remained at equilibrium position by Novel low power consumption axial mixed magnetic bearing.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a low power consumption axial hybrid magnetic bearing, is characterized in that: comprise stator module and rotor assembly;
Described stator module comprises two stator discs, a permanent-magnetic clamp (5), two magnetism resistent rings, two cover control coil windings;
Described stator disc side axial cross section is " F " type, described stator disc is divided into the first stator disc (1), the second stator disc (2), described first stator disc (1) has the first outboard shafts to stator tooth (16), the first inner shafts to stator tooth (18), the first radial stator tooth (20), and described second stator disc (2) has the second outboard shafts to stator tooth (17), the second inner shafts to stator tooth (19), the second radial stator tooth (21);
Together with described permanent-magnetic clamp (5) is mounted on to stator tooth (16) and described second outboard shafts to the end face of stator tooth (17) with described first outboard shafts respectively;
Described magnetism resistent ring is divided into the first magnetism resistent ring (3), the second magnetism resistent ring (4), and described first magnetism resistent ring (3), described second magnetism resistent ring (4) are mounted on respectively and are combined into overall inside and outside both sides to stator tooth (16), the second outboard shafts to stator tooth (17) by described permanent-magnetic clamp (5), the first outboard shafts;
Described control coil winding is divided into the first control coil winding (9), the second control coil winding (10), described control coil winding is wound in the annular groove that is made up of to stator tooth (18), the second inner shafts to stator tooth (19), the first radial stator tooth (20), the second radial stator tooth (21), suction dish (6) described first inner shafts respectively, controls magnetic flux in order to produce;
Described rotor assembly comprises suction dish (6) and rotating shaft (15), described suction dish (6) is disc-shape, be placed in described first inner shafts to stator tooth (18) and the second inner shafts to stator tooth (19) between, disc centre is sleeved in rotating shaft (15);
Described first inner shafts forms axial air-gap (8) to stator tooth (18), the second inner shafts between stator tooth (19) and described suction dish (6); Described first radial stator tooth (20), between the second radial stator tooth (21) and described suction dish (6), form radial air gap (13); Described permanent-magnetic clamp (5), stator disc, axial air-gap (8), suction dish (6) form complete axle, radial quiescent biasing flux circuit, and described suction dish (6) is connected in the middle of axle, radial offset magnetic circuit; Described stator disc, axial air-gap (8), radial air gap (13), suction dish (6) form complete control magnetic flux loop.
2. axial mixed magnetic bearing according to claim 1, is characterized in that: described permanent-magnetic clamp (5) is ring and axial charging, is made up of rare earth material neodymium iron boron.
3. axial mixed magnetic bearing according to claim 1, is characterized in that: described first magnetism resistent ring (3), described second magnetism resistent ring (4) size are identical, and are non-magnet material.
4. axial mixed magnetic bearing according to claim 3, is characterized in that: described first magnetism resistent ring (3), described second magnetism resistent ring (4) are formed by aluminium, epoxide resin material.
5. axial mixed magnetic bearing according to claim 1, is characterized in that: described first stator disc (1), described second stator disc (2) outer surface are disc-shapes, and make by electric steel, structure is identical.
6. axial mixed magnetic bearing according to claim 1, is characterized in that: described first control coil winding (9), the second control coil winding (10) can be connected in series, and two independent winding also can be divided into control respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420501257.0U CN204186801U (en) | 2014-09-01 | 2014-09-01 | A kind of low power consumption axial hybrid magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420501257.0U CN204186801U (en) | 2014-09-01 | 2014-09-01 | A kind of low power consumption axial hybrid magnetic bearing |
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| Publication Number | Publication Date |
|---|---|
| CN204186801U true CN204186801U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420501257.0U Expired - Fee Related CN204186801U (en) | 2014-09-01 | 2014-09-01 | A kind of low power consumption axial hybrid magnetic bearing |
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| CN (1) | CN204186801U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840654A (en) * | 2016-06-08 | 2016-08-10 | 淮阴工学院 | Permanent magnet bias single-degree-of-freedom axial magnetic bearing |
| CN105840655A (en) * | 2016-06-08 | 2016-08-10 | 淮阴工学院 | Novel permanent magnet bias single-degree-of-freedom axial magnetic bearing |
| CN105864292A (en) * | 2016-06-08 | 2016-08-17 | 淮阴工学院 | Permanent magnet polarization three-degree-of-freedom magnetic bearing |
| CN105864293A (en) * | 2016-06-08 | 2016-08-17 | 淮阴工学院 | Integrated five-degree-of-freedom magnetic levitation motorized spindle |
| CN106015331A (en) * | 2016-06-08 | 2016-10-12 | 淮阴工学院 | Low-power-consumption permanent-magnet bias five-degree-of-freedom integrated magnetic bearing |
| CN106026615A (en) * | 2016-06-08 | 2016-10-12 | 淮阴工学院 | Integrated five degrees-of-freedom magnetic suspension direct drive motor |
| CN106059256A (en) * | 2016-06-08 | 2016-10-26 | 淮阴工学院 | Five-degree-of-freedom magnetic suspension motor of integral structure |
| CN106050918A (en) * | 2016-06-08 | 2016-10-26 | 淮阴工学院 | Permanent magnet biased five-degree-of-freedom integrated magnetic suspension supporting system |
| CN106369053A (en) * | 2016-12-06 | 2017-02-01 | 中国工程物理研究院材料研究所 | Magnetic suspension rotating shaft |
| CN106402159A (en) * | 2016-12-06 | 2017-02-15 | 中国工程物理研究院材料研究所 | Permanent magnet bias magnetic suspension rotating shaft |
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2014
- 2014-09-01 CN CN201420501257.0U patent/CN204186801U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106059256A (en) * | 2016-06-08 | 2016-10-26 | 淮阴工学院 | Five-degree-of-freedom magnetic suspension motor of integral structure |
| CN105840655A (en) * | 2016-06-08 | 2016-08-10 | 淮阴工学院 | Novel permanent magnet bias single-degree-of-freedom axial magnetic bearing |
| CN105864292A (en) * | 2016-06-08 | 2016-08-17 | 淮阴工学院 | Permanent magnet polarization three-degree-of-freedom magnetic bearing |
| CN105864293A (en) * | 2016-06-08 | 2016-08-17 | 淮阴工学院 | Integrated five-degree-of-freedom magnetic levitation motorized spindle |
| CN106015331A (en) * | 2016-06-08 | 2016-10-12 | 淮阴工学院 | Low-power-consumption permanent-magnet bias five-degree-of-freedom integrated magnetic bearing |
| CN106026615A (en) * | 2016-06-08 | 2016-10-12 | 淮阴工学院 | Integrated five degrees-of-freedom magnetic suspension direct drive motor |
| CN105840654A (en) * | 2016-06-08 | 2016-08-10 | 淮阴工学院 | Permanent magnet bias single-degree-of-freedom axial magnetic bearing |
| CN106050918A (en) * | 2016-06-08 | 2016-10-26 | 淮阴工学院 | Permanent magnet biased five-degree-of-freedom integrated magnetic suspension supporting system |
| CN106059256B (en) * | 2016-06-08 | 2018-05-29 | 淮阴工学院 | A kind of suspension of five-freedom degree magnetic motor of integral structure |
| CN106026615B (en) * | 2016-06-08 | 2018-05-29 | 淮阴工学院 | A kind of integrated suspension of five-freedom degree magnetic direct driving motor |
| CN106369053A (en) * | 2016-12-06 | 2017-02-01 | 中国工程物理研究院材料研究所 | Magnetic suspension rotating shaft |
| CN106402159A (en) * | 2016-12-06 | 2017-02-15 | 中国工程物理研究院材料研究所 | Permanent magnet bias magnetic suspension rotating shaft |
| CN106402159B (en) * | 2016-12-06 | 2019-07-26 | 中国工程物理研究院材料研究所 | A kind of permanent magnetism off-set magnetic suspension shaft |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20150901 |
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| EXPY | Termination of patent right or utility model |