CN105422623A - Self-powered type magnetic bearing - Google Patents
Self-powered type magnetic bearing Download PDFInfo
- Publication number
- CN105422623A CN105422623A CN201510995313.XA CN201510995313A CN105422623A CN 105422623 A CN105422623 A CN 105422623A CN 201510995313 A CN201510995313 A CN 201510995313A CN 105422623 A CN105422623 A CN 105422623A
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- CN
- China
- Prior art keywords
- magnetic bearing
- coil
- self
- power
- generating equipment
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
- F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
Abstract
The invention discloses a self-powered type magnetic bearing and relates to a bearing. The self-powered type magnetic bearing comprises a bearing body, wherein a plurality of iron cores are arranged inside the bearing body; the iron cores are wound with electromagnetic coils; a power generation device is arranged outside the bearing body and connected with the electromagnetic coils; the power generation device comprises a stator which is required to be arranged on a main shaft in a sleeving mode; stator windings are arranged on the stator uniformly; permanent magnets matched with the stator windings are arranged on the main shaft; electromagnetic coils arranged on the same iron core are divided into a coil of group A and a coil of group B; the coil of group A and the coil of group B are connected with the power generation device respectively; and the turns as well as the current directions of the coil of group A and the coil of group B are the same. Compared with the prior art, the magnetic bearing gains power through the rotation of the shaft to supply power for the coils, as a result, a magnetic levitation effect of the magnetic bearing and the shaft is achieved. When the shaft works, the magnetic bearing also works all the time, so that the problems that a previous magnetic bearing and the shaft belong to two power supply systems respectively, and once electricity of the magnetic bearing is cut off, the shaft rotating at a high speed is damaged and the fracture also cause damage to a motor are avoided.
Description
Technical field
The present invention relates to a kind of bearing, especially a kind of magnetic bearing.
Background technique
Magnetic bearing is a kind of novel high-performance bearing.Compared with conventional ball bearings, sliding bearing and filmatic bearing, there is not Mechanical Contact in magnetic bearing, rotor can reach very high running speed, have that mechanical wear is little, energy consumption is low, noise is little, the life-span is long, without the need to lubrication, without advantages such as oil pollutions, particularly suitable high speed, vacuum, the particular surroundings such as ultra-clean.The fields such as machining, turbomachinery, Aero-Space, vacuum technique, rotor dynamics identification and test can be widely used in, be acknowledged as extremely promising novel bearing.Magnetic bearing is divided into can be divided into following three major types according to the presentation mode of magnetic force: active magnetic bearing, and also referred to as active magnetic bearings, magnetic field is controlled, by detecting by the position of suspended rotor, carrying out ACTIVE CONTROL realize rotor suspension by control system; Passive magnetic bearing, also referred to as passive magnetic bearing, realizes the supporting to rotor portion degrees of freedom with permanent magnet or superconductor; Mixing magnetic axis, contains electromagnet and permanent magnet or superconductor in its mechanical structure.
Active magnetic bearings has the advantages such as rotating speed is high, contactless, unlubricated, has the advantage that can not be substituted at some special occasions.But self-power generation type magnetic bearing needs to power, once interruption of power supply will allow magnetic disappear, at this moment the axle of High Rotation Speed just cannot be suspended in magnetic bearing, and rub increase instantaneously, like this be very easy to damage is caused to axle, more serious meeting allow axle fracture or directly allow motor protect scrap.
Summary of the invention
The present invention is directed to deficiency of the prior art, provide self-power generation type magnetic bearing, it is that coil power supply makes magnetic bearing and axle produce magnetic suspension effect that this magnetic bearing obtains electric power by the rotation of axle, allow axle operationally magnetic bearing also work all the time, avoid when magnetic bearing and axle in the past adhere to two cover power supply systems separately once magnetic bearing power-off can make the axle of High Rotation Speed damage and rupture to jeopardize the problem of motor.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: self-power generation type magnetic bearing, comprise bearing main body, in described bearing main body, uniform circular is provided with several iron cores, described iron core is wound with electromagnetic coil, power generating equipment is provided with outside described bearing main body, electromagnetic coil described in described power generating equipment connects, described power generating equipment comprises the stator needing to be set on main shaft, described stator is evenly provided with some groups of staor winding, described main shaft is provided with the permanent magnet matched with described staor winding, electromagnetic coil on same described iron core is divided into A group coil and B group coil, described A group coil is connected described power generating equipment respectively with described B group coil, described A group coil is identical with described B group coil turn and current direction is also identical.
In technique scheme, preferably, also comprise controller, power governor.
In technique scheme, preferably, described bearing main body is provided with the displacement transducer connecting described controller.
In technique scheme, preferably, described power generating equipment also comprises voltage stabilizer and frequency modulator.
In technique scheme, preferably, maintenance support is provided with bottom described stator.
In technique scheme, preferably, non-firm power connecting line is provided with between described power generating equipment and described electromagnetic coil.
In technique scheme, preferably, described power generating equipment also comprises storage battery.
Magnetic bearing of the present invention connecting outside directly power supply but being circumscribed with power generating equipment, is not that magnetic bearing is powered by the effect generation current of power generating equipment and axle.Power generating equipment comprises the stator be set on axle for this reason, stator is evenly provided with some groups of staor winding, axle is provided with the permanent magnet matched with staor winding, when axle rotates, under the effect of permanent magnet and staor winding, power generating equipment will produce electric current supply magnetic bearing endlessly, magnetic bearing and axle are integrally moved all the time, only has magnetic bearing just meeting power-off when axle does not rotate time, ensure that axle and magnetic bearing are synchronous all the time, avoid magnetic bearing power supply system when power supply system is overlapped in use two to run quickly suddenly to burst and axle and motor are caused to the problem of heavy losses.Simultaneously in order to magnetic bearing keeps stable, also coil is divided into two-part, every part connects power generating equipment all respectively, and such two cover coils can ensure that magnetic bearing normally runs to the full extent.
Compared with prior art, the invention has the beneficial effects as follows: it is that coil power supply makes magnetic bearing and axle produce magnetic suspension effect that this magnetic bearing obtains electric power by the rotation of axle, allow axle operationally magnetic bearing also work all the time, avoid when magnetic bearing and axle in the past adhere to two cover power supply systems separately once magnetic bearing power-off can make the axle of High Rotation Speed damage and rupture to jeopardize the problem of motor.
Accompanying drawing explanation
Fig. 1 is back portion perspective diagram of the present invention.
Back portion perspective diagram when Fig. 2 is using state of the present invention.
Fig. 3 is side schematic view of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of magnetic bearing, comprises bearing main body 1, is provided with power generating equipment 3 outside described bearing main body 1.In described bearing main body 1, uniform circular is provided with several iron cores 11, described iron core 11 is wound with electromagnetic coil, electromagnetic coil on same described iron core 11 is divided into A group coil 12 and B group coil 13, described A group coil 12 is identical with described B group coil 13 number of turn and current direction is also identical, and described A group coil 12 is connected described power generating equipment 3 respectively with described B group coil 13.Described bearing main body 1 is provided with controller 7, and controller 7 connects the displacement transducer being positioned at bearing main body 1.Described power generating equipment 3 comprises the stator 31 needing to be set on main shaft 2, and power generating equipment 3 power generating equipment also comprised described in power governor also comprises voltage stabilizer and frequency modulator and storage battery.Be provided with bottom described stator 31 and keep support 39, described stator 31 is evenly provided with some groups of staor winding 32, and on described main shaft, 2 are provided with the permanent magnet 21 matched with described staor winding 32.Also be provided with heat dissipation channel 81 in described bearing main body 1, described iron core 11 is provided with the radiating groove 82 matched with described heat dissipation channel 81, described heat dissipation channel 81 is circumscribed with radiator 8, has the cooling liquid that can flow in described heat dissipation channel 81.Be provided with several annular passs 91 in described stator 31, there is cooler bin 9 in described annular pass 91 external world, and in described annular pass 91, flowing is provided with cooling liquid.Non-firm power connecting line 6 is provided with between described power generating equipment 3 and described electromagnetic coil.
Magnetic bearing of the present invention connecting outside directly power supply but being circumscribed with power generating equipment 3, is not that magnetic bearing is powered by power generating equipment 3 and the effect generation current of axle 2.Power generating equipment 3 comprises the stator 31 be set on axle for this reason, stator 31 is evenly provided with some groups of staor winding 32, relative axle 2 is provided with the permanent magnet 21 corresponding with staor winding 32, when axle 2 High Rotation Speed, staor winding 32 will generation current, in order to keep to bearing main body 1 power stable, also the power generating equipment arranged in power generating equipment 3 described in power governor also comprises voltage stabilizer and frequency modulator and storage battery, allows continual and steady the powering for bearing main body 1 of power generating equipment 3.In stator 31 and bearing main body 1, be also provided with cooling unit, prevent bearing main body 1 and stator 31 overheated in the course of the work, in order to avoid the normal work of impact.In order to ensure contingency, the electromagnetic coil in bearing main body 1 on iron core 11 is divided into A group coil 12 and B group coil 13, two groups of coils to connect power generating equipment 3 respectively by different power rail 6, further ensures the normal work of bearing main body 1.As long as the present invention's main shaft 2 rotates powering for bearing main body 1 of just can continuing always, main shaft 2 is made to remain identical work with bearing main body 1, there will not be axle 2 still when high speed rotating, the phenomenon of bearing main body 1 dead electricity, even if axle 2 stops operating, the electric power stored in storage battery also can keep the suspension of main shaft 2, allows staff have time enough to carry out malfunction elimination.
Claims (7)
1. self-power generation type magnetic bearing, comprise bearing main body (1), in described bearing master (1) body, uniform circular is provided with several iron cores (11), described iron core (11) is wound with electromagnetic coil, it is characterized by, power generating equipment (3) is provided with outside described bearing main body (1), electromagnetic coil described in described power generating equipment (3) connects, described power generating equipment (3) comprises the stator (31) needing to be set on main shaft (2), described stator (31) is evenly provided with some groups of staor winding (32), described main shaft (3) is provided with the permanent magnet (21) matched with described staor winding (32), electromagnetic coil on same described iron core (11) is divided into A group coil (12) and B group coil (13), described A group coil (12) is connected described power generating equipment (3) respectively with described B group coil (13), described A group coil (12) is identical with described B group coil (13) number of turn and current direction is also identical.
2. self-power generation type magnetic bearing according to claim 1, is characterized by, and also comprises controller (7), power governor.
3. self-power generation type magnetic bearing according to claim 2, is characterized by, and described bearing main body (1) is provided with the displacement transducer connecting described controller (7).
4. self-power generation type magnetic bearing according to claim 1, is characterized by, and described power generating equipment (3) also comprises voltage stabilizer and frequency modulator.
5. self-power generation type magnetic bearing according to claim 1, is characterized by, and described stator (31) bottom is provided with and keeps support (39).
6. self-power generation type magnetic bearing according to claim 1, is characterized by, and is provided with non-firm power connecting line (6) between described power generating equipment (3) and described electromagnetic coil.
7. self-power generation type magnetic bearing according to claim 1, is characterized by, and described power generating equipment (3) also comprises storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995313.XA CN105422623B (en) | 2015-12-28 | 2015-12-28 | Self-power generation type magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995313.XA CN105422623B (en) | 2015-12-28 | 2015-12-28 | Self-power generation type magnetic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105422623A true CN105422623A (en) | 2016-03-23 |
| CN105422623B CN105422623B (en) | 2018-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510995313.XA Active CN105422623B (en) | 2015-12-28 | 2015-12-28 | Self-power generation type magnetic bearing |
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| CN (1) | CN105422623B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877761A (en) * | 1972-03-20 | 1975-04-15 | Padana Ag | Electromagnetic bearing means |
| JPS5950220A (en) * | 1982-09-14 | 1984-03-23 | Natl Aerospace Lab | Multi-spindle control type magnetic bearing |
| JPH01182620A (en) * | 1988-01-12 | 1989-07-20 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic bearing |
| JPH03255221A (en) * | 1990-02-28 | 1991-11-14 | Shimadzu Corp | Drive supporting mechanism of rotating body |
| CN101536289A (en) * | 2006-09-22 | 2009-09-16 | 维克托·伊安娜洛 | Magnetic bearing |
| CN201466812U (en) * | 2009-08-25 | 2010-05-12 | 中国人民解放军军事交通学院 | Horizontal axial rotating part electronic power supply device |
| CN201571004U (en) * | 2009-10-28 | 2010-09-01 | 中国船舶重工集团公司第七一O研究所 | Magnetic suspension flywheel battery device |
| CN202833649U (en) * | 2012-09-27 | 2013-03-27 | 路斯特传动系统(上海)有限公司 | Magnetic levitation bearing |
| CN103216527A (en) * | 2013-03-15 | 2013-07-24 | 浙江大学 | Magnetic bearing based on radial rejection and application thereof |
| US20130343927A1 (en) * | 2012-06-22 | 2013-12-26 | Aktiebolaget Skf | Electric centrifugal compressor for vehicles |
| CN103490572A (en) * | 2013-05-28 | 2014-01-01 | 南京航空航天大学 | Three-degree-of-freedom magnetic suspension switch reluctance motor |
| EP2587636A3 (en) * | 2011-10-27 | 2014-12-17 | Linz Center Of Mechatronics Gmbh | Electrical machine, in particular brushless torque motor |
-
2015
- 2015-12-28 CN CN201510995313.XA patent/CN105422623B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877761A (en) * | 1972-03-20 | 1975-04-15 | Padana Ag | Electromagnetic bearing means |
| JPS5950220A (en) * | 1982-09-14 | 1984-03-23 | Natl Aerospace Lab | Multi-spindle control type magnetic bearing |
| JPH01182620A (en) * | 1988-01-12 | 1989-07-20 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic bearing |
| JPH03255221A (en) * | 1990-02-28 | 1991-11-14 | Shimadzu Corp | Drive supporting mechanism of rotating body |
| CN101536289A (en) * | 2006-09-22 | 2009-09-16 | 维克托·伊安娜洛 | Magnetic bearing |
| CN201466812U (en) * | 2009-08-25 | 2010-05-12 | 中国人民解放军军事交通学院 | Horizontal axial rotating part electronic power supply device |
| CN201571004U (en) * | 2009-10-28 | 2010-09-01 | 中国船舶重工集团公司第七一O研究所 | Magnetic suspension flywheel battery device |
| EP2587636A3 (en) * | 2011-10-27 | 2014-12-17 | Linz Center Of Mechatronics Gmbh | Electrical machine, in particular brushless torque motor |
| US20130343927A1 (en) * | 2012-06-22 | 2013-12-26 | Aktiebolaget Skf | Electric centrifugal compressor for vehicles |
| CN202833649U (en) * | 2012-09-27 | 2013-03-27 | 路斯特传动系统(上海)有限公司 | Magnetic levitation bearing |
| CN103216527A (en) * | 2013-03-15 | 2013-07-24 | 浙江大学 | Magnetic bearing based on radial rejection and application thereof |
| CN103490572A (en) * | 2013-05-28 | 2014-01-01 | 南京航空航天大学 | Three-degree-of-freedom magnetic suspension switch reluctance motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105422623B (en) | 2018-03-09 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200414 Address after: 423, floor 4, block a, Xinhua future city building, No. 175, Litang Road, Changping District, Beijing 102200 Patentee after: Li Qiannan Address before: Creek Town Fengming road Zhenhai District 315200 Zhejiang city of Ningbo province No. 666 Patentee before: NINGBO DAFEN SEIKO BEARING Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200428 Address after: 057750 bearing Creative Industry Park, Guantao County, Handan City, Hebei Province Patentee after: HEBEI YACHAO BEARING GROUP Co.,Ltd. Address before: 423, floor 4, block a, Xinhua future city building, No. 175, Litang Road, Changping District, Beijing 102200 Patentee before: Li Qiannan |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231005 Address after: 057750 South side of Bearing Avenue, Bearing Creative Industry Park, Guantao County, Handan City, Hebei Province Patentee after: Hebei Jiangbei Bearing Manufacturing Co.,Ltd. Address before: 057750 bearing Creative Industry Park, Guantao County, Handan City, Hebei Province Patentee before: HEBEI YACHAO BEARING GROUP CO.,LTD. |