CN106402158A - Radial magnetic bearing and sensor bracket split structure - Google Patents
Radial magnetic bearing and sensor bracket split structure Download PDFInfo
- Publication number
- CN106402158A CN106402158A CN201611047386.7A CN201611047386A CN106402158A CN 106402158 A CN106402158 A CN 106402158A CN 201611047386 A CN201611047386 A CN 201611047386A CN 106402158 A CN106402158 A CN 106402158A
- Authority
- CN
- China
- Prior art keywords
- magnetic bearing
- sensor
- bracket
- radial direction
- radial magnetic
- 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.)
- Pending
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
- F16C32/0446—Determination of the actual position of the moving member, e.g. details of sensors
-
- 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
- F16C32/047—Details of housings; Mounting of active magnetic bearings
-
- 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
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/10—Force connections, e.g. clamping
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a radial magnetic bearing and sensor bracket split structure. The radial magnetic bearing and sensor bracket split structure comprises a radial magnetic bearing, a displacement sensor, a magnetic bearing bracket and a sensor bracket, wherein both the magnetic bearing bracket and the sensor bracket are of circular structures, the sensor bracket is coaxially arranged in the magnetic bearing bracket, magnetic poles of the radial magnetic bearing are fixed to the interior of the magnetic bearing bracket, and the displacement sensor is installed on the inner circular surface of the sensor bracket. The displacement sensor and the magnetic poles of the radial magnetic bearing are installed in the same component and can be integrally assembled and disassembled, therefore, the concentricity of the displacement sensor and the radial magnetic bearing cannot be changed by repeated disassembly and assembly of the radial magnetic bearing, and the control program of the magnetic bearing can be simplified. Additionally, the sensor and the sensor bracket can be separately removed from the assembly and can be replaced together, so that the production efficiency is improved, and the maintenance time and maintenance cost are reduced.
Description
Technical field：
The present invention relates to a kind of radial direction magnetic bearing and sensor stand Split type structure.
Background technology：
Active magnetic bearings are closed-loop control systems.It needs to detect the position of rotor by sensor, then adjusts
Pole coil current control magnetic force makes the rotor of deviation position return on its due position.Therefore need in radial direction magnetic bearing
Hold annular configuration one circle magnetic pole and a coil sensor in peritrochanteric, respectively in order to export and to detect.
Magnetic bearing and sensor can be separately mounted in casing for common radial direction magnetic bearing structure, and therefore both is concentric
Degree is poor.
What sensor was actually detected is the gap of sensor stand inner ring surface and rotor, and the suction of magnetic bearing and magnetic bearing
Inner ring surface has much relations with the air gap of rotor.So the deviation of both concentricitys can lead to sensor feedback position signalling and
Rotor is shifted with the actual relative position of magnetic bearing, thus leading to magnetic bearing eccentric rotary or control fault.
The patent No.：201410655289.0 disclosing mounting structure and the installation of a kind of radial direction magnetic bearing and radial transducer
Radial direction magnetic bearing and sensor are combined into an overall structure in this patent, thus ensure that radial direction magnetic axis and sensing by method
The concentricity of device, but find that overall structure brings problems with actual use.
Because displacement transducer is accurate measurement element, fabrication yield is low, and fragile structure easily damages in assembling, makes
Shorter with the life-span, but volume very little, manufacturing cost are relatively low simultaneously；The volume of magnetic bearing is larger, intensity is good, long service life,
But manufacturing cost is higher.Therefore both are made after overall structure, bring some troubles to production and maintenance：
1) operation that sensor is installed toward on sensor stand is very fine, and the factor such as erection stress, fitting temperature all may be used
Sensor accuracy can be caused to change, so yield rate is relatively low.But the final step of sensor detection needs on magnetic axis bearing assembly
Complete, once discovery sensor therefore in monolithic construction, completed whole magnetic axis bearing assembly is required for doing over again, and causes to produce
Delay.
2) in using, sensor often occurs to damage, and the also intact situation of magnetic bearing.Now need by sensor with
Magnetic axis bearing assembly integral replacing, this maintenance process must return to carry out in factory, maintenance process complexity, cycle length, maintenance cost
Higher.
Therefore, it is necessory to improve prior art to solve the deficiency of prior art.
Content of the invention：
The present invention is to solve the problems, such as that above-mentioned prior art provides a kind of radial direction magnetic bearing and sensor to prop up
Frame Split type structure.
The technical solution adopted in the present invention has：A kind of radial direction magnetic bearing and sensor stand Split type structure, including radially
Magnetic bearing, displacement transducer, magnetic bearing support and sensor stand, described magnetic bearing support and sensor stand are annular
Structure, coaxially in magnetic bearing support, the magnetic pole of radial direction magnetic bearing is fixed in magnetic bearing support sensor stand, position
Displacement sensor is arranged on the inner ring surface of sensor stand.
Further, described magnetic bearing support is provided with the step surface for install sensor support.
Further, between described magnetic bearing support and sensor stand it is interference fit.
The present invention has the advantages that：
1) because displacement transducer and radial direction magnetic bearing magnetic pole are arranged in same part, can integrally assemble, dismantle,
Therefore repeated disassembled and assembled radial direction magnetic bearing does not result in displacement transducer and the concentricity of radial direction magnetic bearing changes, and can simplify
Magnetic bearings control program；
2) displacement transducer is closer apart from radial direction magnetic bearing magnetic pole, can reduce and miss because of the control that rotor tilt causes
Difference；
3) sensor holder component manufacture and the manufacturing process of magnetic bearing part separate, and to the last assemble again, therefore pass
The yield rate that sensor fits into sensor stand operation does not result in doing over again of magnetic bearing global facility, can produce in a large number and carry out
Apolegamy, conveniently arranges production, decreases the waste in man-hour；
4) because sensor stand and magnetic bearing support are together with elastic conjunction, therefore when sensor is damaged
When, easily can disassemble from sensor-magnetic axis bearing assembly and be changed it is not necessary to all tear magnetic bearing part open
Fall；So the maintenance process of split-type structural simplifies a lot, can complete in curstomer's site it is not necessary to carry out again returning factory's dimension
Repair, greatly reduce maintenance cost and maintenance time；
5) because sensor stand and magnetic bearing support are together with elastic conjunction, the therefore sensor of split-type structural
It is slightly below monolithic construction with magnetic bearing concentricity, but the structure being arranged on than sensor in casing is well a lot.
Brief description：
Fig. 1 is present configuration figure.
Specific embodiment：
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of radial direction magnetic bearing of the present invention and sensor stand Split type structure, including radial direction magnetic bearing 1, position
Displacement sensor 2, magnetic bearing support 3 and sensor stand 4, magnetic bearing support 3 and sensor stand 4 are loop configuration, pass
Sensor bracket 4 is coaxially in magnetic bearing support 3, and is interference fit between the two.The magnetic pole of radial direction magnetic bearing 1 is fixed
In magnetic bearing support 3, displacement transducer 2 is arranged on the inner ring surface of sensor stand 4.
Step surface 31 for install sensor support 4 is provided with magnetic bearing support 3.
The inner peripheral surface of the inner ring surface A of radial direction magnetic bearing 1 and step surface 31 on lathe once clamping, process, with
Heart degree error is minimum.The inside and outside anchor ring of sensor stand 4 can also clamped one time, machine-shaping, concentricity is little.Therefore
The concentricity of the inner ring surface A of the inner ring surface B of sensor stand 4 and radial direction magnetic bearing 1 is approximately equal to the dress in elastic conjunction face
Join error, so Split type structure concentricity is much smaller than the structure being respectively arranged in casing.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art
For member, some improvement can also be made under the premise without departing from the principles of the invention, these improvement also should be regarded as the present invention's
Protection domain.
Claims (3)
1. a kind of radial direction magnetic bearing and sensor stand Split type structure it is characterised in that：Pass including radial direction magnetic bearing (1), displacement
Sensor (2), magnetic bearing support (3) and sensor stand (4), described magnetic bearing support (3) and sensor stand (4) are ring
Shape structure, coaxially in magnetic bearing support (3), the magnetic pole of radial direction magnetic bearing (1) is fixed on magnetic axis to sensor stand (4)
Hold in support (3), displacement transducer (2) is arranged on the inner ring surface of sensor stand (4).
2. radial direction magnetic bearing as claimed in claim 1 and sensor stand Split type structure it is characterised in that：Described magnetic bearing props up
Frame (3) is provided with the step surface (31) for install sensor support (4).
3. radial direction magnetic bearing as claimed in claim 2 and sensor stand Split type structure it is characterised in that：Described magnetic bearing props up
It is interference fit between frame (3) and sensor stand (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611047386.7A CN106402158A (en) | 2016-11-21 | 2016-11-21 | Radial magnetic bearing and sensor bracket split structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611047386.7A CN106402158A (en) | 2016-11-21 | 2016-11-21 | Radial magnetic bearing and sensor bracket split structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106402158A true CN106402158A (en) | 2017-02-15 |
Family
ID=58081735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611047386.7A Pending CN106402158A (en) | 2016-11-21 | 2016-11-21 | Radial magnetic bearing and sensor bracket split structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402158A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827208A (en) * | 2018-08-10 | 2018-11-16 | 甘肃智通科技工程检测咨询有限公司 | A kind of anchor clipper, steel strand wires relative shift self-operated measuring unit |
| CN109505875A (en) * | 2018-12-18 | 2019-03-22 | 南京磁谷科技有限公司 | Radial direction and axial combination sensor for magnetic suspension bearing |
| CN110145544A (en) * | 2019-06-04 | 2019-08-20 | 中电建路桥集团有限公司 | A kind of split type cyclic annular radial direction magnetic bearing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006046600A (en) * | 2004-08-06 | 2006-02-16 | Koyo Seiko Co Ltd | Magnetic bearing unit and flywheel energy storage device provided with it |
| CN101465576A (en) * | 2008-11-28 | 2009-06-24 | 江苏大学 | High speed electric principal shaft supported by AC mixing magnetic bearing |
| 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 |
| CN205592285U (en) * | 2016-01-29 | 2016-09-21 | 中车株洲电机有限公司 | Magnetic suspension bearing |
| CN206206401U (en) * | 2016-11-21 | 2017-05-31 | 南京磁谷科技有限公司 | A kind of radial direction magnetic bearing and sensor stand Split type structure |
-
2016
- 2016-11-21 CN CN201611047386.7A patent/CN106402158A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006046600A (en) * | 2004-08-06 | 2006-02-16 | Koyo Seiko Co Ltd | Magnetic bearing unit and flywheel energy storage device provided with it |
| CN101465576A (en) * | 2008-11-28 | 2009-06-24 | 江苏大学 | High speed electric principal shaft supported by AC mixing magnetic bearing |
| 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 |
| CN205592285U (en) * | 2016-01-29 | 2016-09-21 | 中车株洲电机有限公司 | Magnetic suspension bearing |
| CN206206401U (en) * | 2016-11-21 | 2017-05-31 | 南京磁谷科技有限公司 | A kind of radial direction magnetic bearing and sensor stand Split type structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827208A (en) * | 2018-08-10 | 2018-11-16 | 甘肃智通科技工程检测咨询有限公司 | A kind of anchor clipper, steel strand wires relative shift self-operated measuring unit |
| CN109505875A (en) * | 2018-12-18 | 2019-03-22 | 南京磁谷科技有限公司 | Radial direction and axial combination sensor for magnetic suspension bearing |
| CN110145544A (en) * | 2019-06-04 | 2019-08-20 | 中电建路桥集团有限公司 | A kind of split type cyclic annular radial direction magnetic bearing |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |
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