CN105422621A - Active magnetic bearing - Google Patents
Active magnetic bearing Download PDFInfo
- Publication number
- CN105422621A CN105422621A CN201510995181.0A CN201510995181A CN105422621A CN 105422621 A CN105422621 A CN 105422621A CN 201510995181 A CN201510995181 A CN 201510995181A CN 105422621 A CN105422621 A CN 105422621A
- Authority
- CN
- China
- Prior art keywords
- bearing
- magnetic bearing
- heat dissipation
- active magnetic
- generating equipment
- 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.)
- Granted
Links
Classifications
-
- 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
- F16C32/0457—Details of the power supply to the electromagnets
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses an active magnetic bearing and relates to a bearing. The active magnetic bearing comprises a bearing body, wherein a plurality of iron cores are arranged inside the bearing body uniformly and circumferentially; 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; a plurality of groups of stator windings are arranged on the stator uniformly; permanent magnets matched with the stator windings are arranged on the main shaft; a heat dissipation channel is further arranged inside the bearing; heat dissipation grooves matched with the heat dissipation channel are formed in the iron cores; the heat dissipation channel is externally connected with a radiator; and a flowable cooling liquid is arranged in the heat dissipation channel. 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 active 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 active 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: active 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.
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.
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. an active 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), heat dissipation channel (81) is also provided with 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), in described heat dissipation channel (81), there is the cooling liquid that can flow.
2. the active magnetic bearing of one according to claim 1, is characterized by, and also comprises controller (7), power governor.
3. the active magnetic bearing of one according to claim 2, is characterized by, and described bearing main body (1) is provided with the displacement transducer connecting described controller (7).
4. the active magnetic bearing of one according to claim 1, is characterized by, and described power generating equipment (3) also comprises voltage stabilizer and frequency modulator.
5. the active magnetic bearing of one according to claim 1, is characterized by, and described stator (31) bottom is provided with and keeps support (39).
6. the active magnetic bearing of one 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. the active magnetic bearing of one 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 |
|---|---|---|---|
| CN201510995181.0A CN105422621B (en) | 2015-12-28 | 2015-12-28 | Active magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995181.0A CN105422621B (en) | 2015-12-28 | 2015-12-28 | Active magnetic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105422621A true CN105422621A (en) | 2016-03-23 |
| CN105422621B CN105422621B (en) | 2018-10-12 |
Family
ID=55501074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510995181.0A Active CN105422621B (en) | 2015-12-28 | 2015-12-28 | Active magnetic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105422621B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812500A (en) * | 2019-02-21 | 2019-05-28 | 珠海格力电器股份有限公司 | Wiring device of magnetic suspension bearing, compressor and refrigeration equipment |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005030724A1 (en) * | 2005-07-01 | 2007-01-04 | Levitec Gbmh | Electric magnetic bearing system |
| EP2083183A2 (en) * | 2008-01-24 | 2009-07-29 | Ebara Corporation | Sensorless magnetic bearing apparatus |
| JP2010025341A (en) * | 2008-07-21 | 2010-02-04 | Siemens Ag | Magnetic radial bearing and magnetic bearing device with polyphase ac regulator |
| CN201420807Y (en) * | 2009-03-17 | 2010-03-10 | 中国船舶重工集团公司第七一〇研究所 | Magnetic suspension bearing device for mixed magnetic circuit |
| CN101701573A (en) * | 2009-10-30 | 2010-05-05 | 北京航空航天大学 | Horizontal shaft magnetic suspension wind driven generator |
| CN101922511A (en) * | 2010-08-25 | 2010-12-22 | 江苏大学 | Permanent-magnet bias outer rotor radial AC hybrid magnetic bearing |
| CN203632454U (en) * | 2013-10-30 | 2014-06-04 | 南京邮电大学 | Magnetic suspension flywheel energy storage battery used for electric automobile |
| US20140234139A1 (en) * | 2011-09-26 | 2014-08-21 | Daikin Industries, Ltd. | Magnetic bearing and compressor using the same |
| CN105099128A (en) * | 2014-05-21 | 2015-11-25 | 林旭光 | Magnetic suspension type power generating device |
| CN105465175A (en) * | 2015-12-28 | 2016-04-06 | 宁波达奋精工轴承有限公司 | Active magnetic bearing |
-
2015
- 2015-12-28 CN CN201510995181.0A patent/CN105422621B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005030724A1 (en) * | 2005-07-01 | 2007-01-04 | Levitec Gbmh | Electric magnetic bearing system |
| EP2083183A2 (en) * | 2008-01-24 | 2009-07-29 | Ebara Corporation | Sensorless magnetic bearing apparatus |
| JP2010025341A (en) * | 2008-07-21 | 2010-02-04 | Siemens Ag | Magnetic radial bearing and magnetic bearing device with polyphase ac regulator |
| CN201420807Y (en) * | 2009-03-17 | 2010-03-10 | 中国船舶重工集团公司第七一〇研究所 | Magnetic suspension bearing device for mixed magnetic circuit |
| CN101701573A (en) * | 2009-10-30 | 2010-05-05 | 北京航空航天大学 | Horizontal shaft magnetic suspension wind driven generator |
| CN101922511A (en) * | 2010-08-25 | 2010-12-22 | 江苏大学 | Permanent-magnet bias outer rotor radial AC hybrid magnetic bearing |
| US20140234139A1 (en) * | 2011-09-26 | 2014-08-21 | Daikin Industries, Ltd. | Magnetic bearing and compressor using the same |
| CN203632454U (en) * | 2013-10-30 | 2014-06-04 | 南京邮电大学 | Magnetic suspension flywheel energy storage battery used for electric automobile |
| CN105099128A (en) * | 2014-05-21 | 2015-11-25 | 林旭光 | Magnetic suspension type power generating device |
| CN105465175A (en) * | 2015-12-28 | 2016-04-06 | 宁波达奋精工轴承有限公司 | Active magnetic bearing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812500A (en) * | 2019-02-21 | 2019-05-28 | 珠海格力电器股份有限公司 | Wiring device of magnetic suspension bearing, compressor and refrigeration equipment |
| CN109812500B (en) * | 2019-02-21 | 2024-05-03 | 珠海格力电器股份有限公司 | Wiring device of magnetic suspension bearing, compressor and refrigeration equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105422621B (en) | 2018-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10340768B2 (en) | Flywheel energy storage device with induction torque transfer | |
| CN105864292B (en) | A kind of permanent magnet bias Three Degree Of Freedom magnetic bearing | |
| CN108591257A (en) | Permanent magnet biased axial magnetic suspension bearing with radial passive suspension force | |
| CN106015331B (en) | A kind of low power consumption permanent magnet biased five degree of freedom integrated magnetic bearing | |
| CN105782242A (en) | Flywheel energy storage system and five-degree-of-freedom magnetic suspension supporting structure | |
| CN107070073B (en) | Magnetic suspension flywheel battery | |
| US20160036310A1 (en) | Magnetic Levitation Electrical Generator | |
| CN103216528A (en) | One-side hybrid axial magnetic bearing | |
| CN105186740A (en) | Inertia energy storage system | |
| CN105570299A (en) | Three-degree-of-freedom hybrid magnetic bearing used for horizontal-axis wind power generation | |
| RU133986U1 (en) | KINETIC ENERGY STORAGE WITH MAGNETIC HTSC SUSPENSION | |
| CN205663759U (en) | Permanent magnetism biasing single degree of freedom axial magnetic bearing | |
| CN105840654B (en) | A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing | |
| CN104295604B (en) | Mixing eccentrically arranged type radial magnetic bearing | |
| CN112160985A (en) | Electric spindle system supported by double-piece radial six-pole hybrid magnetic bearing with different magnetic pole surfaces | |
| CN103368326A (en) | Low-power-consumption magnetic suspension flywheel energy storing device | |
| JP2013128371A (en) | Fan motor | |
| CN105422621A (en) | Active magnetic bearing | |
| CN205663761U (en) | Five degrees of freedom of low -power permanent magnet biased integrate magnetic bearing | |
| CN105465175A (en) | Active magnetic bearing | |
| CN105508425B (en) | A kind of self-power generation type magnetic bearing | |
| EP3780380B1 (en) | Electric motor system, and turbo compressor provided with same | |
| RU2540696C1 (en) | High-rate electrical machine with vertical shaft | |
| CN105422623A (en) | Self-powered type magnetic bearing | |
| CN102570926A (en) | Five-degree-of-freedom suspended electric power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180803 Address after: 226691 53 Jiqing Central Road, Tun tou Town, Haian, Nantong, Jiangsu Applicant after: NANTONG FANGYUAN BEARING CO., LTD. Address before: 315200 666 Feng Ming Road, Zhenpu Town, Zhenhai District, Ningbo, Zhejiang Applicant before: Ningbo reaches puts forth energy Seiko bearing Co., Ltd |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |