CN106321496A - High-speed magnetic suspension rotor type axial detection device and centrifugal compressor - Google Patents
High-speed magnetic suspension rotor type axial detection device and centrifugal compressor Download PDFInfo
- Publication number
- CN106321496A CN106321496A CN201610964485.5A CN201610964485A CN106321496A CN 106321496 A CN106321496 A CN 106321496A CN 201610964485 A CN201610964485 A CN 201610964485A CN 106321496 A CN106321496 A CN 106321496A
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- China
- Prior art keywords
- magnetic
- shaft
- axially
- ring
- sensor
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
Abstract
The invention discloses a high-speed magnetic suspension rotor type axial detection device and a centrifugal compressor and belongs to the technical field of centrifugal compressors and accessories thereof. The high-speed magnetic suspension rotor type axial detection device and the centrifugal compressor are designed for solving the problems that an existing device is inconvenient to assemble and disassemble and the like. The high-speed magnetic suspension rotor type axial detection device comprises a magnetic suspension spindle, a steplike spindle shoulder is arranged on the magnetic suspension spindle, a radial bearing rotor component sleeves the spindle shoulder, and an axial detection ring and a sensor are arranged on the spindle shoulder sequentially and positioned on the outer side of the radial bearing rotor component. The high-speed magnetic suspension rotor type axial detection device and the centrifugal compressor have the advantages that the magnetic suspension spindle can be disassembled from a shell without disassembling the detection ring and the sensor firstly; after the axial detection ring is mounted on the magnetic suspension spindle, a cylindrical grinder can be used for finish grinding of the outer side face of the axial detection ring to guarantee perpendicularity of the detection surface of the axial detection ring and the axis of the magnetic suspension spindle, so that machining difficulty of the axial detection ring is lowered.
Description
Technical field
The present invention relates to centrifugal compressor and accessory technical field thereof, particularly relate to a kind of high speed magnetic suspended rotor and axially examine
Survey device and include that this high speed magnetic suspended rotor axially detects the centrifugal compressor of device.
Background technology
It is the central structure in the device such as centrifugal compressor and high-speed blower that high speed magnetic suspended rotor axially detects device,
As it is shown in figure 1, high speed magnetic suspended rotor axially detects device includes magnetic-suspension main-shaft 1, magnetic-suspension main-shaft 1 is provided with step
The main shaft shaft shoulder 11 of shape, is arranged with journal bearing rotor assembly 2, sensor 3 on the main shaft shaft shoulder 11 successively and axially detects ring
4, wherein, sensor 3 is provided with radially detection probe 5 and axial detection probe 6.
The defect of this structure includes: one, axially detection ring 4 is step-like along its axis direction, in order to will axially detect
Ring 4 is arranged on magnetic-suspension main-shaft 1, axially positions axially detection ring 4, causes the natural frequency of magnetic-suspension main-shaft 1 to drop
Low, critical speed reduces, current bearing rotor assembly size and rear bearing rotor assembly is equivalently-sized, use identical control strategy
Time axially detect the step-like structure of ring 4 left end journal bearing control accuracy can be caused to be worse than right-hand member journal bearing control accuracy；
Two, axially detection ring 4 requirement on machining accuracy is strict, and difficulty of processing is big；Three, when needs are by magnetic suspension rotor (that is, whole rotor)
When splitting out, because the position reason of sensor 3 first must remove axially detecting ring 4, then could be split out by magnetic suspension rotor, increase
The workload that magnetic suspension rotor splits out, dismounting inconvenience are added.
Summary of the invention
The high speed magnetic suspended rotor that it is an object of the present invention to propose a kind of magnetic-suspension main-shaft easy accessibility is axially examined
Survey device.
Further object is that the centrifugal compressor proposing a kind of stable working state.
For reaching this purpose, on the one hand, the present invention by the following technical solutions:
A kind of high speed magnetic suspended rotor axially detects device, including magnetic-suspension main-shaft, arranges on described magnetic-suspension main-shaft
Have the step-like main shaft shaft shoulder, the described main shaft shaft shoulder be arranged with journal bearing rotor assembly, on the described main shaft shaft shoulder and
Be positioned at described journal bearing rotor assembly has been orderly arranged outside each axially detection ring and sensor.
Particularly, described axial detection ring is circular ring, and described axial detection ring is fixed with described magnetic-suspension main-shaft
Connect.
Particularly, the described main shaft shaft shoulder the sheathed tubular in outside by non-permeable material make to magnetic shield,
The outside of described magnetic shield is axially disposed with described journal bearing rotor assembly, described axial detection along magnetic-suspension main-shaft
Ring and described sensor；Leave gap between described sensor and described magnetic shield, described sensor towards described magnetic shield
Inwall on be provided with radially detection probe.
Further, described axial detection ring and described magnetic shield are an overall structure.
Particularly, described magnetic-suspension main-shaft is made up of magnetic conductive material.
Particularly, between described sensor and described axial detection ring, leave gap, at described sensor towards described
Axially it is provided with axial detection probe on the side of detection ring.
Particularly, described axial detection ring and described magnetic-suspension main-shaft are made up of non-permeable material.
Particularly, described axial detection ring hot charging is on described magnetic-suspension main-shaft.
Particularly, described axial detection ring is perpendicular to the axis of described magnetic-suspension main-shaft towards the side of described sensor.
On the other hand, the present invention is by the following technical solutions:
A kind of centrifugal compressor, axially detects device including above-mentioned high speed magnetic suspended rotor.
High speed magnetic suspended rotor of the present invention axially detects the axially detection ring of device and is positioned at sensor and journal bearing rotor
Between assembly, directly can split out magnetic-suspension main-shaft from housing and remove with removal sensor without first will axially detect ring；
Cylindrical grinder can be used after ring is arranged on magnetic-suspension main-shaft to axially detecting the lateral surface of ring (towards sensor by axially detecting
Side) refine, it is ensured that the axially detection faces (lateral surface, towards the side of sensor) of detection ring and magnetic-suspension main-shaft axle
The perpendicularity of line, reduces the difficulty of processing axially detecting ring, improves the degree of accuracy of detection.
Centrifugal compressor of the present invention includes that above-mentioned high speed magnetic suspended rotor axially detects device, and magnetic-suspension main-shaft is at housing
Middle easy accessibility, dismounting efficiency are high, complete machine stable working state.
Accompanying drawing explanation
Fig. 1 is the sectional view that existing high speed magnetic suspended rotor axially detects device；
Fig. 2 is the sectional view that the high speed magnetic suspended rotor that the preferred embodiment of the present invention one provides axially detects device；
Fig. 3 is the section view that the first high speed magnetic suspended rotor that the preferred embodiment of the present invention two provides axially detects device
Figure；
Fig. 4 is the section view that the second high speed magnetic suspended rotor that the preferred embodiment of the present invention two provides axially detects device
Figure.
In figure:
1, magnetic-suspension main-shaft；2, journal bearing rotor assembly；3, sensor；4, ring is axially detected；5, radially detection probe；
6, axial detection probe；7, magnetic shield；8, end face；11, the main shaft shaft shoulder.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
Preferred embodiment one:
This preferred embodiment provides a kind of high speed magnetic suspended rotor axially to detect device.As in figure 2 it is shown, this high-speed magnetic levitation
Rotor axial detection device includes magnetic-suspension main-shaft 1, is provided with the step-like main shaft shaft shoulder 11, is leading on magnetic-suspension main-shaft 1
Journal bearing rotor assembly 2 it is arranged with, on the main shaft shaft shoulder 11 and be positioned at outside journal bearing rotor assembly 2 on the axle shaft shoulder 11
Side is disposed with axially detection ring 4 and sensor 3.Wherein, sensor 3 can be current vortex sensor；Axially detection ring 4 He
Magnetic-suspension main-shaft 1 is made up of non-permeable material, is respectively intended to completely cut off rotor magnetic field and journal bearing rotor assembly 2 magnetic field
On the impact of probe on sensor 3；Journal bearing rotor assembly 2 and magnetic-suspension main-shaft 1 elastic conjunction.
The outside that detection ring 4 axial in existing structure is positioned at sensor 3 is changed into being positioned at the inner side of sensor 3, Ke Yizhi
Connect and from housing, split out magnetic-suspension main-shaft 1 and remove with removal sensor 3 without first will axially detect ring 4；To axially detect ring 4
After being arranged on magnetic-suspension main-shaft 1, it is possible to use the cylindrical grinder lateral surface (towards the side of sensor 3) to axially detecting ring 4
Refine, it is ensured that the axially detection faces (lateral surface, towards the side of sensor 3) of detection ring 4 and magnetic-suspension main-shaft 1 axis
Perpendicularity, reduces the difficulty of processing axially detecting ring 4.
After axially detection ring 4 changes into being set on the main shaft shaft shoulder 11, axially detection ring 4 can be designed as circular ring,
Axially detection ring 4 is fixing with magnetic-suspension main-shaft 1 is connected, and preferably axially detection ring 4 hot charging is on magnetic-suspension main-shaft 1.By adjusting
Bearing can improve the mode node of magnetic-suspension main-shaft 1 to the detection axial location of ring 4, this design of circular ring, improves magnetic
The natural frequency of suspension main shaft 1 and critical speed, during high speed rotating, magnetic-suspension main-shaft 1 front end disturbance is little, can improve the control of bearing
Precision processed, makes magnetic-suspension main-shaft 1 structure compacter.
Magnetic-suspension main-shaft 1 axially with radially have certain moving range, only when magnetic-suspension main-shaft 1 axially
Or amount of movement radially reaches just to need during this moving range maximum to be adjusted the position of magnetic-suspension main-shaft 1.
Correspondingly, between sensor 3 and axially detection ring 4, leave gap, at sensor 3 towards axially detection ring 4
Axial detection probe 6 it is provided with on side；It is fixing be connected, both phase para-positions because axially detecting ring 4 and magnetic-suspension main-shaft 1
It is changeless for putting, so will send letter when the lateral distance that axial detection probe 6 detects axially detection ring 4 is crossed near
Number.Leave gap between sensor 3 and magnetic-suspension main-shaft 1, the inwall towards magnetic-suspension main-shaft 1 of sensor 3 is provided with
Radially detection probe 5, will send signal when radial direction detection probe 5 detects the lateral surface hypotelorism of magnetic-suspension main-shaft 1.
On the basis of said structure, using the end face 8 of magnetic-suspension main-shaft 1 as dynamic balancing duplicate removal face, using duplicate removal as dynamic
Balance correction means, carry out dynamic balance calibration to high speed rotor of motor.
Preferred embodiment two:
This preferred embodiment provides a kind of high speed magnetic suspended rotor axially to detect device, its structure and preferred embodiment one base
This is the most identical, and its difference is, as it is shown on figure 3, at the sheathed tubular in the outside of the main shaft shaft shoulder 11 by non-permeable material system
Paired magnetic shield 7, in the outside of magnetic shield 7 along magnetic-suspension main-shaft 1 be axially disposed with journal bearing rotor assembly 2,
Axially detection ring 4 and sensor 3；Gap is left, the inwall towards magnetic shield 7 of sensor 3 between sensor 3 and magnetic shield 7
On be provided with radially detection probe 5.
In this structure, magnetic-suspension main-shaft 1 can be made up of magnetic conductive material, and magnetic shield 7 energy shielding motor rotor magnetic field is to biography
Sensor 3 and the impact of journal bearing rotor assembly 2, play the effect in shielding motor rotor magnetic field.Magnetic-suspension main-shaft 1 in this structure
Can also be made up of non-permeable material, it is ensured that magnetic-suspension main-shaft 1 versatility is higher (after removing magnetic shield 7 because of certain reason
Need not because problem of materials changes magnetic-suspension main-shaft 1).
Can also as shown in Figure 4, axially detection ring 4 and magnetic shield 7 are an overall structure, simplify assembly difficulty；At axle
Detection faces and magnetic-suspension main-shaft 1 axle of axially detection ring 4 is ensured that at the beginning of detection ring 4 and the processing of magnetic shield 7 integral piece
The perpendicularity of line, it is not necessary to again it is carried out ground finish towards the side of sensor 3 after axially detection ring 4 installs, fall
Low processing energy degree.
Preferred embodiment three:
This preferred embodiment provides a kind of centrifugal compressor, including the high-speed magnetic levitation as described in preferred embodiment one or two
Rotor axial detection device, magnetic-suspension main-shaft easy accessibility in the housing, dismounting efficiency are high, complete machine stable working state.
Note, above are only presently preferred embodiments of the present invention and the know-why used.Those skilled in the art can manage
Solve, the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art
Change, readjust and substitute without departing from protection scope of the present invention.Therefore, although by above example, the present invention is entered
Go and be described in further detail, but the present invention has been not limited only to above example, without departing from the inventive concept,
Other Equivalent embodiments more can also be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. high speed magnetic suspended rotor axially detects a device, including magnetic-suspension main-shaft (1), on described magnetic-suspension main-shaft (1)
Being provided with the step-like main shaft shaft shoulder (11), be arranged with journal bearing rotor assembly (2) on the described main shaft shaft shoulder (11), it is special
Levy and be, above and be positioned at being orderly arranged outside each axially of described journal bearing rotor assembly (2) the described main shaft shaft shoulder (11)
Detection ring (4) and sensor (3).
High speed magnetic suspended rotor the most according to claim 1 axially detects device, it is characterised in that described axial detection ring
(4) being circular ring, described axial detection ring (4) is fixing with described magnetic-suspension main-shaft (1) to be connected.
High speed magnetic suspended rotor the most according to claim 1 axially detects device, it is characterised in that at the described main shaft shaft shoulder
(11) the sheathed tubular in outside by non-permeable material make to magnetic shield (7), in the outside of described magnetic shield (7) along institute
That states magnetic-suspension main-shaft (1) is axially disposed with described journal bearing rotor assembly (2), described axial detection ring (4) and institute
State sensor (3)；Leave gap between described sensor (3) and described magnetic shield (7), described sensor (3) towards described
Radially detection probe (5) it is provided with on the inwall of magnetic shield (7).
High speed magnetic suspended rotor the most according to claim 3 axially detects device, it is characterised in that described axial detection ring
And described magnetic shield (7) is an overall structure (4).
5. axially detect device according to the high speed magnetic suspended rotor described in claim 3 or 4, it is characterised in that described magnetic suspension
Main shaft (1) is made up of magnetic conductive material.
High speed magnetic suspended rotor the most according to any one of claim 1 to 4 axially detects device, it is characterised in that institute
State and leave gap between sensor (3) and described axial detection ring (4), at described sensor (3) towards described axial detection
Axial detection probe (6) it is provided with on the side of ring (4).
High speed magnetic suspended rotor the most according to any one of claim 1 to 4 axially detects device, it is characterised in that institute
State and axially detect ring (4) and described magnetic-suspension main-shaft (1) is made up of non-permeable material.
High speed magnetic suspended rotor the most according to claim 1 and 2 axially detects device, it is characterised in that described axial inspection
Survey ring (4) hot charging on described magnetic-suspension main-shaft (1).
High speed magnetic suspended rotor the most according to any one of claim 1 to 4 axially detects device, it is characterised in that institute
State and axially detect ring (4) and be perpendicular to the axis of described magnetic-suspension main-shaft (1) towards the side of described sensor (3).
10. a centrifugal compressor, it is characterised in that include that high-speed magnetic levitation as claimed in any one of claims 1-9 wherein turns
Son axially detects device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610964485.5A CN106321496A (en) | 2016-11-04 | 2016-11-04 | High-speed magnetic suspension rotor type axial detection device and centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610964485.5A CN106321496A (en) | 2016-11-04 | 2016-11-04 | High-speed magnetic suspension rotor type axial detection device and centrifugal compressor |
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| CN106321496A true CN106321496A (en) | 2017-01-11 |
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| CN201610964485.5A Pending CN106321496A (en) | 2016-11-04 | 2016-11-04 | High-speed magnetic suspension rotor type axial detection device and centrifugal compressor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107742995A (en) * | 2017-12-04 | 2018-02-27 | 南京磁谷科技有限公司 | A kind of mounting structure of the axial detection piece of magnetic suspension motor rotor |
| CN107956749A (en) * | 2017-12-04 | 2018-04-24 | 南京磁谷科技有限公司 | A kind of axial rack mounting structure of magnetic suspension cfentrifugal blower |
| CN108757735A (en) * | 2018-08-30 | 2018-11-06 | 南京磁谷科技有限公司 | A kind of compound axle sleeve structure of magnetic suspension motor rotor |
| CN108809154A (en) * | 2018-06-14 | 2018-11-13 | 珠海格力电器股份有限公司 | A kind of novel magnetically levitated high-speed electric expreess locomotive and the method for detecting motor rotor position |
| CN111486112A (en) * | 2019-01-29 | 2020-08-04 | 青岛海尔智能技术研发有限公司 | Magnetic suspension centrifugal compressor and air conditioning system |
| WO2021114492A1 (en) * | 2019-12-11 | 2021-06-17 | 南京磁谷科技股份有限公司 | Structure using axial sensor for gap adjustment in air compressor |
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| JP2009222069A (en) * | 2008-03-13 | 2009-10-01 | Ntn Corp | Magnetic bearing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107742995A (en) * | 2017-12-04 | 2018-02-27 | 南京磁谷科技有限公司 | A kind of mounting structure of the axial detection piece of magnetic suspension motor rotor |
| CN107956749A (en) * | 2017-12-04 | 2018-04-24 | 南京磁谷科技有限公司 | A kind of axial rack mounting structure of magnetic suspension cfentrifugal blower |
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| CN108757735A (en) * | 2018-08-30 | 2018-11-06 | 南京磁谷科技有限公司 | A kind of compound axle sleeve structure of magnetic suspension motor rotor |
| CN111486112A (en) * | 2019-01-29 | 2020-08-04 | 青岛海尔智能技术研发有限公司 | Magnetic suspension centrifugal compressor and air conditioning system |
| WO2021114492A1 (en) * | 2019-12-11 | 2021-06-17 | 南京磁谷科技股份有限公司 | Structure using axial sensor for gap adjustment in air compressor |
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