CN206206401U - A kind of radial direction magnetic bearing and sensor stand Split type structure - Google Patents
A kind of radial direction magnetic bearing and sensor stand Split type structure Download PDFInfo
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- CN206206401U CN206206401U CN201621260172.3U CN201621260172U CN206206401U CN 206206401 U CN206206401 U CN 206206401U CN 201621260172 U CN201621260172 U CN 201621260172U CN 206206401 U CN206206401 U CN 206206401U
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- magnetic bearing
- radial direction
- sensor stand
- sensor
- direction magnetic
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Abstract
The utility model discloses a kind of radial direction magnetic bearing and sensor stand Split type structure, including radial direction magnetic bearing, displacement transducer, magnetic bearing support and sensor stand, the magnetic bearing support is loop configuration with sensor stand, sensor stand is coaxially in magnetic bearing support, the magnetic pole of radial direction magnetic bearing is fixed in magnetic bearing support, and displacement transducer is arranged on the inner ring surface of sensor stand.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.Sensor can individually be removed from said modules together with sensor stand, changed simultaneously, be conducive to improve production efficiency, reduced maintenance time and maintenance cost.
Description
Technical field：
The utility model is related to a kind of radial direction magnetic bearing and sensor stand Split type structure.
Background technology：
Active magnetic bearings are a closed-loop control systems.It is needed to be detected the position of rotor by sensor, then adjusted
Pole coil current control magnetic force makes the rotor of deviation position return on its due position.Therefore needed in radial direction magnetic bearing
Annular configuration one circle magnetic pole and a coil sensor are held in peritrochanteric, is used to export and detect respectively.
Can be separately mounted on casing for magnetic bearing and sensor by common radial direction magnetic bearing structure, therefore both concentric
Degree is poor.
Sensor it is actually detected be sensor stand inner ring surface and rotor gap, 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 cause the position signalling of sensor feedback and
Rotor shifts with the actual relative position of magnetic bearing, eccentric rotary or control failure occurs so as to cause magnetic bearing.
The patent No.：201410655289.0 mounting structure and the installations for disclosing a kind of radial direction magnetic bearing and radial transducer
Method, an overall structure is combined into the patent by radial direction magnetic bearing and sensor, so as to ensure that radial direction magnetic axis with sensing
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 is easily damaged in assembling, is made
It is 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 after both being made into overall structure, some troubles are brought to production and maintenance：
1) sensor is very fine toward the operation of installation on sensor stand, 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 detection of sensor is needed on magnetic axis bearing assembly
Complete, once therefore discovery sensor in monolithic construction, completed whole magnetic axis bearing assembly is required for doing over again, and causes production
Delay.
2) often occur sensor in use to have damaged, 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 be carried out in factory, and maintenance process is complicated, the cycle is long, maintenance cost
It is higher.
Therefore, it is necessory to be improved to solve the deficiency of prior art to prior art.
Utility model content：
The utility model is to provide a kind of radial direction magnetic bearing with sensing to solve the problems, such as above-mentioned prior art
Device support Split type structure.
The technical scheme that the utility model is used has：A kind of radial direction magnetic bearing and sensor stand Split type structure, including
Radial direction magnetic bearing, displacement transducer, magnetic bearing support and sensor stand, the magnetic bearing support are with sensor stand
Loop configuration, coaxially in magnetic bearing support, the magnetic pole of radial direction magnetic bearing is fixed on magnetic bearing support to sensor stand
Interior, displacement transducer is arranged on the inner ring surface of sensor stand.
Further, the magnetic bearing support is provided with the step surface for install sensor support.
Further, it is interference fit between the magnetic bearing support and sensor stand.
The utility model 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 the control caused by rotor tilt and miss
Difference；
3) sensor holder component manufacture is separated with the manufacturing process of magnetic bearing part, is to the last assembled again, therefore is passed
The yield rate that sensor fits into sensor stand operation does not result in doing over again for magnetic bearing global facility, and can largely produce is carried out
Apolegamy, conveniently arranges production, and reduces the waste in man-hour；
4) together with magnetic bearing support being elastic conjunction due to sensor stand, therefore when sensor is damaged
When, can easily be disassembled 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 is simplified a lot, can be completed in curstomer's site, it is not necessary to carry out returning factory's dimension again
Repair, greatly reduce maintenance cost and maintenance time；
5) together with magnetic bearing support being elastic conjunction due to sensor stand, thus split-type structural sensor
Monolithic construction is slightly below with magnetic bearing concentricity, but the structure being arranged on casing than sensor is well a lot.
Brief description of the drawings：
Fig. 1 is the utility model structure chart.
Specific embodiment：
The utility model is further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of radial direction magnetic bearing of the utility model and sensor stand Split type structure, including radial direction magnetic bearing
1st, displacement transducer 2, magnetic bearing support 3 and sensor stand 4, magnetic bearing support 3 are ring junction with sensor stand 4
Structure, sensor stand 4 is coaxially located in magnetic bearing support 3, and is between the two interference fit.The magnetic of radial direction magnetic bearing 1
Pole is fixed in magnetic bearing support 3, and displacement transducer 2 is arranged on the inner ring surface of sensor stand 4.
The step surface 31 for install sensor support 4 is provided with magnetic bearing support 3.
The inner ring surface A of radial direction magnetic bearing 1 and the inner peripheral surface of step surface 31 on lathe once clamping, process, together
Heart degree error is minimum.The inside and outside anchor ring of sensor stand 4 can also clamped one time, machine-shaping, concentricity is small.Therefore
The concentricity of the inner ring surface B of sensor stand 4 and the inner ring surface A of radial direction magnetic bearing 1 is approximately equal to the dress in elastic conjunction face
With error, so Split type structure concentricity is much smaller than the structure for being respectively arranged in casing.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, some improvement can also be made on the premise of the utility model principle is not departed from, these improvement also should be regarded as
Protection domain of the present utility model.
Claims (3)
1. a kind of radial direction magnetic bearing and sensor stand Split type structure, it is characterised in that：Passed including radial direction magnetic bearing (1), displacement
Sensor (2), magnetic bearing support (3) and sensor stand (4), the magnetic bearing support (3) are ring with sensor stand (4)
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 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：The magnetic bearing branch
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：The magnetic bearing branch
It is interference fit between frame (3) and sensor stand (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260172.3U CN206206401U (en) | 2016-11-21 | 2016-11-21 | A kind of radial direction magnetic bearing and sensor stand Split type structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260172.3U CN206206401U (en) | 2016-11-21 | 2016-11-21 | A kind of radial direction magnetic bearing and sensor stand Split type structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206401U true CN206206401U (en) | 2017-05-31 |
Family
ID=58750171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621260172.3U Active CN206206401U (en) | 2016-11-21 | 2016-11-21 | A kind of radial direction magnetic bearing and sensor stand Split type structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206206401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402158A (en) * | 2016-11-21 | 2017-02-15 | 南京磁谷科技有限公司 | Radial magnetic bearing and sensor bracket split structure |
-
2016
- 2016-11-21 CN CN201621260172.3U patent/CN206206401U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402158A (en) * | 2016-11-21 | 2017-02-15 | 南京磁谷科技有限公司 | Radial magnetic bearing and sensor bracket split structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 211100 No. 99, Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province (Jiangning Development Zone) Patentee after: Nanjing Cigu Technology Co., Ltd Address before: 211100 Jiangning Development Zone, Jiangsu Province, nine bamboo Road, No. 100, No. Patentee before: NANJING CIGU LIMITED Corp. |
|
| CP03 | Change of name, title or address |