CN209925430U - Mixed type magnetic suspension bearing system - Google Patents
Mixed type magnetic suspension bearing system Download PDFInfo
- Publication number
- CN209925430U CN209925430U CN201920217189.8U CN201920217189U CN209925430U CN 209925430 U CN209925430 U CN 209925430U CN 201920217189 U CN201920217189 U CN 201920217189U CN 209925430 U CN209925430 U CN 209925430U
- Authority
- CN
- China
- Prior art keywords
- bearing
- stator
- annular
- bearing system
- main shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model discloses a mixed type magnetic levitation bearing system, including stator structure and rotor structure, rotor structure sets up in stator structure's inboard, and rotor structure includes bearing spindle and the magnetic ring that links to each other with the bearing spindle, and the both ends of bearing spindle are supported by journal bearing, and journal bearing allows rotor structure contactless suspension in stator structure to rotate. The utility model discloses a mixed type magnetic levitation bearing system is a mixed type magnetic levitation bearing system architecture that has combined initiative suspension and passive suspension, and through the design with motor/generator and axial bearing's design and combining together, the no control structure of adoption passive suspension has simplified magnetic levitation bearing's project organization greatly, in journal bearing's design, adopts the magnet structure of electromagnetism and the mixed suspension of permanent magnetism to realize energy-conserving target.
Description
Technical Field
The utility model belongs to the technical field of the bearing device, especially, relate to a mixed type magnetic bearing system.
Background
Magnetic bearings (Magnetic Bearing) use Magnetic force to suspend the rotor in the air, so that there is no mechanical contact between the rotor and the stator. The principle is that the magnetic induction lines are vertical to the magnetic suspension lines, the shaft core is parallel to the magnetic suspension lines, so that the weight of the rotor is fixed on a running track, and the shaft core almost without load is propped against the direction of the magnetic suspension lines to form that the whole rotor is suspended in the air and is on the fixed running track.
In application, magnetic suspension bearings are mostly used as rotors of generators or motors, the existing magnetic suspension bearings mostly adopt a structure that radial bearings and axial bearings are independently designed and controlled, the control and the structure are complex, and the phase change causes the increase of equipment cost. Therefore, the structural design of the existing magnetic suspension bearing mostly adopts the concept that the rotor and the magnetic suspension bearing are separately designed, on one hand, the complexity of the structure is increased, the complexity of the design is improved, on the other hand, the weight of the rotor is also increased, and the limitation on the aspect of the rotation speed increase is brought.
SUMMERY OF THE UTILITY MODEL
For solving the problem in the prior art, the utility model provides a mixed type magnetic bearing system.
In order to achieve the above object, the utility model discloses a concrete technical scheme of mixed type magnetic levitation bearing system as follows:
a mixed magnetic suspension bearing system comprises a stator structure and a rotor structure, wherein the rotor structure is arranged on the inner side of the stator structure, the rotor structure comprises a bearing main shaft and a magnetic ring connected with the bearing main shaft, two ends of the bearing main shaft are supported by radial bearings, and the radial bearings allow the rotor structure to rotate in a non-contact suspension mode in the stator structure.
Further, the magnetic ring of the rotor structure is an annular Halbach permanent magnet array.
Further, the annular halbach permanent magnet array is fixedly connected with the bearing main shaft through a connecting assembly to form a rotor structure, and the annular halbach permanent magnet array is arranged in the middle of the bearing main shaft.
Further, the bearing main shaft is of a hollow structure.
Further, the stator structure comprises an annular metal plate made of conductive non-magnetic conductive materials, the Halbach permanent magnet array is arranged opposite to at least partial sections of the annular metal plate in the radial direction, and electromagnetic repulsion can be generated between the rotating annular Halbach permanent magnet array and the annular metal plate so as to bear axial dynamic load during the rotation of the rotor structure.
Furthermore, the stator structure also comprises a stator winding, the annular metal plates are arranged on two sides of the stator structure, the stator winding is arranged between the annular metal plates on the two sides, the stator winding is in a long strip shape and is annular, and the length direction of the stator winding is consistent with that of the bearing spindle.
Further, the annular metal plates are copper plates or aluminum plates, the stator windings are arranged on the radial inner sides of the annular metal plates on the two sides, and stator cores are arranged in the stator windings.
Furthermore, two ends of the bearing main shaft are supported by radial bearings, and each radial bearing comprises an annular iron core and a permanent magnet embedded in the annular iron core.
Further, the edge of the inner ring of the annular iron core also forms a concave part, and a winding coil is arranged in the concave part.
Further, the recess is disposed in radial alignment with the permanent magnet.
The utility model discloses a mixed type magnetic levitation bearing system is a mixed type magnetic levitation bearing system architecture that has combined initiative suspension and passive suspension, and through the design with motor/generator and axial bearing's design and combining together, the no control structure of adoption passive suspension has simplified magnetic levitation bearing's project organization greatly, in journal bearing's design, adopts the magnet structure of electromagnetism and the mixed suspension of permanent magnetism to realize energy-conserving target.
Drawings
Fig. 1 is a perspective view of a hybrid magnetic bearing system of the present invention;
FIG. 2 is a cross-sectional view of the hybrid magnetic bearing system of FIG. 1;
fig. 3 is a schematic structural diagram of a rotor structure in the hybrid magnetic bearing system of the present invention;
FIG. 4 is a cross-sectional cutaway view of the rotor assembly of FIG. 3;
FIG. 5 is an annular Halbach permanent magnet array of the rotor assembly of FIG. 3;
fig. 6 is a schematic structural view of the hybrid magnetic bearing system and the stator structure of the present invention;
FIG. 7 is a cross-sectional view of the stator structure at the motor coils;
FIG. 8 is a cross-sectional profile view at a metal plate in a stator structure;
figure 9 is a schematic cross-sectional view of a radial bearing in a hybrid magnetic bearing system of the present invention.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the hybrid magnetic suspension bearing system of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-2, the hybrid magnetic suspension bearing system of the present invention includes a stator structure 10 and a rotor structure 20, the rotor structure 20 is disposed inside the stator structure 10, the rotor structure 20 can be supported by the stator structure 10 and rotate inside the stator structure 10, a main bearing shaft 21 in the rotor structure 20 can be supported by radial bearings 30 at two ends, and the radial bearings 30 can allow the rotor structure 20 to rotate in the stator structure 10 without contact suspension.
As shown in fig. 1 to 5, the stator structure 10 includes a bearing main shaft 21 and a ring-shaped permanent magnet array 22 fixedly connected to the bearing main shaft 21, that is, the stator structure 10 includes the bearing main shaft 21 and the ring-shaped permanent magnet array 22 fixedly connected to each other, and the ring-shaped permanent magnet array 22 can be fixedly connected to the bearing main shaft 21 through a connecting assembly 23, so as to form a rotor structure 20.
The annular permanent magnet array 22 is disposed in the middle of the main shaft 21 of the bearing, and the annular permanent magnet array 22 preferably adopts a Halbach (Halbach) structure (see fig. 5), that is, the annular permanent magnet array 22 is an annular Halbach permanent magnet array. The bearing main shaft 21 adopts a common cylindrical structure, and if the requirements of weight reduction and proper rigidity and strength of the rotating shaft are considered, the bearing main shaft 21 can be arranged into a hollow structure.
Preferably, in the Halbach magnet ring, the circular Halbach array includes 10-20 equal parts of even-numbered magnetic poles, for example, 16 equal parts (or divided in different proportions according to actual requirements), each equal part is supplemented with different magnetizing angles to form 4 magnetic poles (N-S-N-S), and the specific number of the magnetic poles and the equal division of the array can be determined according to actual requirements, such as bearing capacity, motor rotation speed limit, and the like.
As shown in fig. 1-2 and fig. 6-8, the hybrid magnetic bearing system is combined with a stator structure 10 of a motor, the stator structure 10 of the motor or generator adopts an assembled annular plate structure, two sides of the stator structure 10 are annular metal plates 11 made of conductive and non-conductive materials (such as copper, aluminum, etc.), a stator winding 12 is adopted in the middle, the stator winding 12 is used as a stator of the motor, after the stator winding 12 is electrified, the rotor structure realizes a rotation function, that is, the motor is in a rotating working state after the stator winding 12 is electrified.
The stator winding 12 is in the shape of a long bar and a ring, and the length direction of the stator winding 12 is identical to the length direction of the bearing spindle 21. Therefore, the stator structure 10 adopts a three-section type annular plate series connection structure, two sides are metal plates (copper plates or aluminum plates) which are conductive and non-conductive, the middle is a stator winding 12, and two ends of the stator winding 12 are connected with the annular metal plates 11 at two sides in series. Preferably, the stator windings 12 are arranged on the inner side of the two side annular metal plates 11, i.e. on the side close to the rotor structure 20.
According to the requirement of the rotating speed, a stator core can be arranged in the stator winding 12, the core can be selected from a silicon steel sheet laminated structure to realize magnetism gathering, and the magnetic resistance caused by the eddy current effect can be reduced by adopting the silicon steel sheet laminated structure. The outer side of the stator structure 10 is provided with a housing to encapsulate and protect the hybrid magnetic bearing system.
As shown in fig. 9, the utility model discloses a radial bearing 30, mixed type magnetic levitation bearing system adopts electromagnetism and permanent magnetism mixed structure, to rotor structure 20's bearing main shaft 21, bearing main shaft 21's both ends are supported by radial bearing 30, radial bearing 30 includes annular iron core 31 and inlays permanent magnet 32 of establishing in the annular iron core, the inner ring edge of annular iron core 31 forms the depressed part, be provided with winding coil 33 in this depressed part, winding coil 33 is the electromagnetic structure part, winding coil 33 produces electromagnetic force after circular telegram, this magnetic force is for being used for the dynamic force of balanced motor rotor structure when motor rotates, the depressed part aligns the setting with permanent magnet, thereby winding coil also aligns the setting with permanent magnet 32.
Thus, the static magnetic force of the permanent magnet 32 on the radial bearing 30 is used to offset/support the self weight of the rotor structure 20, and the electromagnetic force generated by the coil windings is used to adjust the dynamic balance during the rotation of the rotor structure. When the stator winding 12 is energized, the rotor structure 20 in the hybrid magnetic bearing system starts to rotate, the radial dynamic load of the rotor structure 20 is borne by the electromagnetic force provided by the electromagnet formed by the winding coil 33 and the annular iron core 31, and the axial dynamic load in the rotation process of the rotor structure 20 is borne by the passive suspension structure (the electromagnetic repulsion force can be generated between the annular halbach permanent magnet array and the annular metal plate 11) formed by the annular metal plate 11 and the annular halbach permanent magnet array.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.
Claims (10)
1. The utility model provides a mixed type magnetic bearing system, its characterized in that includes stator structure and rotor structure, and rotor structure sets up the inboard at stator structure, and rotor structure includes bearing main shaft and the magnetic ring that links to each other with the bearing main shaft, and the both ends of bearing main shaft are supported by radial bearing, and radial bearing allows rotor structure contactless suspension rotation in stator structure.
2. The hybrid magnetic-levitation bearing system as recited in claim 1, wherein the magnetic ring of the rotor structure is an annular halbach array of permanent magnets.
3. The hybrid magnetic bearing system of claim 2, wherein the annular halbach array of permanent magnets is fixedly connected to the main shaft of the bearing by a connecting assembly to form a rotor structure, the annular halbach array of permanent magnets being disposed in the middle of the main shaft of the bearing.
4. The hybrid magnetic-levitation bearing system as recited in claim 2, wherein the bearing spindle is hollow.
5. A hybrid magnetic-levitation bearing system as recited in claim 2, wherein the stator structure comprises an annular metal plate made of an electrically conductive and magnetically non-conductive material, wherein the halbach array of permanent magnets is disposed radially opposite at least a portion of the annular metal plate, and wherein the rotating annular halbach array of permanent magnets generates an electromagnetic repulsion force with the annular metal plate to carry axial dynamic loads during rotation of the rotor structure.
6. The hybrid magnetic bearing system of claim 5, wherein the stator structure further comprises a stator winding, the annular metal plates are disposed on two sides of the stator structure, the stator winding is disposed between the annular metal plates on two sides, the stator winding is in the shape of an elongated ring, and the length direction of the stator winding is consistent with the length direction of the main shaft of the bearing.
7. The hybrid magnetic bearing system of claim 6, wherein the annular metal plates are copper plates or aluminum plates, the stator windings are disposed on the radial inner sides of the annular metal plates on both sides, and the stator core is disposed in the stator windings.
8. The hybrid magnetic-levitation bearing system as recited in claim 2, wherein both ends of the main shaft of the bearing are supported by radial bearings, the radial bearings comprising an annular core and permanent magnets embedded in the annular core.
9. The hybrid magnetic-levitation bearing system as recited in claim 8, wherein the inner ring edge of the toroidal core further forms a recess in which the winding coil is disposed.
10. The hybrid magnetic-levitation bearing system of claim 9, wherein the recess is disposed in radial alignment with the permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920217189.8U CN209925430U (en) | 2019-02-20 | 2019-02-20 | Mixed type magnetic suspension bearing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920217189.8U CN209925430U (en) | 2019-02-20 | 2019-02-20 | Mixed type magnetic suspension bearing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925430U true CN209925430U (en) | 2020-01-10 |
Family
ID=69068315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920217189.8U Active CN209925430U (en) | 2019-02-20 | 2019-02-20 | Mixed type magnetic suspension bearing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925430U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826868A (en) * | 2019-02-20 | 2019-05-31 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | A hybrid magnetic bearing system |
-
2019
- 2019-02-20 CN CN201920217189.8U patent/CN209925430U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826868A (en) * | 2019-02-20 | 2019-05-31 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | A hybrid magnetic bearing system |
| CN109826868B (en) * | 2019-02-20 | 2025-04-01 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | A hybrid magnetic bearing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9154024B2 (en) | Systems and methods for improved direct drive generators | |
| US4031421A (en) | Electric generator | |
| CN111075839B (en) | New structure radial two degrees of freedom six-pole AC/DC hybrid magnetic bearing | |
| US11722027B2 (en) | Rotor for an axial flux motor, a radial flux motor, and a transversal flux motor | |
| US5864198A (en) | Brushless generator | |
| CN100487257C (en) | Permanent-magnetic biased axial magnetic bearing | |
| CN106763184B (en) | A kind of sextupole radial-axial hybrid magnetic bearing | |
| CN102072249B (en) | Large-bearing-capacity radial magnetic bearing | |
| CN102434587A (en) | Permanent magnet passive type axial magnetic suspension bearing with passive damping effect | |
| CN106958589B (en) | Halbach permanent magnetism passive type axial magnetic suspension bearings with damping action | |
| CN102921971A (en) | High-speed magnetic suspension electric main shaft for five-freedom numerically-controlled machine tool | |
| US8074579B1 (en) | Magnetically levitated transport system | |
| CN108050156A (en) | A kind of sextupole hybrid magnetic bearing | |
| CN101994761A (en) | Double-permanent magnet outer-rotor permanent magnet biased radial magnetic bearing | |
| CN209925430U (en) | Mixed type magnetic suspension bearing system | |
| CN108599500B (en) | Stator permanent magnet type outer rotor sheet bearingless asynchronous motor | |
| Rubio et al. | Design and analysis of a bearingless motor with passive axial suspension through null-flux coils | |
| CN112065856B (en) | Four-pole internal and external double-rotor hybrid magnetic bearing | |
| CN211574039U (en) | New structure radial two-degree-of-freedom hexapole alternating current/direct current hybrid magnetic bearing | |
| CN102537048A (en) | Axial magnetic bearing capable of controlling radial twisting | |
| CN104989727B (en) | Combined-type five-degree-of-freedom electromagnetic bearing | |
| CN109826868B (en) | A hybrid magnetic bearing system | |
| CN106949142B (en) | A kind of radial-axial hybrid magnetic bearing of external rotor radial sextupole | |
| CN201846157U (en) | Low-reluctance generator | |
| CN111365370A (en) | Suspension type automobile bearing with built-in self-excitation pole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |