CN206280289U - High speed magnetic suspended rotor axial direction detection means and centrifugal compressor - Google Patents
High speed magnetic suspended rotor axial direction detection means and centrifugal compressor Download PDFInfo
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- CN206280289U CN206280289U CN201621189665.2U CN201621189665U CN206280289U CN 206280289 U CN206280289 U CN 206280289U CN 201621189665 U CN201621189665 U CN 201621189665U CN 206280289 U CN206280289 U CN 206280289U
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Abstract
The utility model discloses a kind of high speed magnetic suspended rotor axial direction detection means and centrifugal compressor, belong to centrifugal compressor and its accessory technical field, to be designed the problems such as solving existing apparatus dismounting inconvenience.The utility model high speed magnetic suspended rotor axial direction detection means includes magnetic-suspension main-shaft, the step-like main shaft shaft shoulder is provided with magnetic-suspension main-shaft, journal bearing rotor assembly is arranged with the main shaft shaft shoulder, axially detection ring and sensor has been orderly arranged outside each on the main shaft shaft shoulder and positioned at journal bearing rotor assembly.The utility model high speed magnetic suspended rotor axial direction detection means and centrifugal compressor can directly split out magnetic-suspension main-shaft from housing and first need not remove with removal sensor axially detection ring；To axially detect that ring can be refined using cylindrical grinder after being arranged on magnetic-suspension main-shaft to the lateral surface of axially detection ring, it is ensured that axially detect the detection faces of ring and the perpendicularity of magnetic-suspension main-shaft axis, reduce the difficulty of processing of axially detection ring.
Description
Technical field
The utility model is related to centrifugal compressor and its accessory technical field, more particularly to a kind of high speed magnetic suspended rotor axle
To detection means and including the high speed magnetic suspended rotor axial direction detection means centrifugal compressor.
Background technology
High speed magnetic suspended rotor axial direction detection means is the central structure in the devices such as centrifugal compressor and high-speed blower,
As shown in figure 1, high speed magnetic suspended rotor axial direction detection means includes magnetic-suspension main-shaft 1, step is provided with magnetic-suspension main-shaft 1
The main shaft shaft shoulder 11 of shape, is arranged with journal bearing rotor assembly 2, sensor 3 and axially detects ring successively on the main shaft shaft shoulder 11
4, wherein, radial direction detection probe 5 and axial detection probe 6 are provided with sensor 3.
The defect of the structure includes：First, axially detection ring 4 along its axis direction in step-like, in order to by axial detection
Ring 4 is arranged on magnetic-suspension main-shaft 1, carries out axially position to axially detection ring 4, causes the intrinsic frequency of magnetic-suspension main-shaft 1 to drop
The reduction of low, critical speed, current bearing rotor assembly size is identical with rear bearing rotor assembly size, using identical control strategy
When axially detect that the step-like structure of ring 4 can cause left end journal bearing control accuracy to be worse than right-hand member journal bearing control accuracy；
2nd, axially detection ring 4 requirement on machining accuracy is strict, and difficulty of processing is big；3rd, when needing magnetic suspension rotor (that is, whole rotor)
When splitting out, because axially detection ring 4 first must be removed and then could split out magnetic suspension rotor by the position reason of sensor 3, increase
The workload that magnetic suspension rotor splits out is added, dismounting is inconvenient.
Utility model content
A purpose of the present utility model is to propose a kind of high speed magnetic suspended rotor axle of magnetic-suspension main-shaft convenient disassembly
To detection means.
Another purpose of the present utility model is to propose a kind of centrifugal compressor of stable working state.
It is up to this purpose, on the one hand, the utility model uses following technical scheme：
A kind of high speed magnetic suspended rotor axial direction detection means, including magnetic-suspension main-shaft, are set on the magnetic-suspension main-shaft
Have the step-like main shaft shaft shoulder, journal bearing rotor assembly be arranged with the main shaft shaft shoulder, on the main shaft shaft shoulder and
Axially detection ring and sensor has been orderly arranged outside each positioned at the journal bearing rotor assembly.
Particularly, the axially detection ring is circular ring, and the axially detection ring is fixed with the magnetic-suspension main-shaft
Connection.
Particularly, be arranged on the outside of the main shaft shaft shoulder tubular by non-permeable material be made to magnetic shield,
The outside of the magnetic shield is disposed with the journal bearing rotor assembly, the axial direction along the axial direction of the magnetic-suspension main-shaft
Detection ring and the sensor；Leave gap between the sensor and the magnetic shield, described in the direction of the sensor every
Radial direction detection probe is provided with the inwall of magnetosheath.
Further, the axially detection ring and the magnetic shield are an overall structure.
Particularly, the magnetic-suspension main-shaft is made up of magnetic conductive material.
Particularly, gap is left between the sensor and the axially detection ring, described in the direction in the sensor
Axially axial detection probe is provided with the side of detection ring.
Particularly, axially detection ring and the magnetic-suspension main-shaft are made up of non-permeable material.
Particularly, the axially detection ring hot charging is on the magnetic-suspension main-shaft.
Particularly, it is described axially detection ring towards the side of the sensor perpendicular to the magnetic-suspension main-shaft axis.
On the other hand, the utility model uses following technical scheme：
A kind of centrifugal compressor, including above-mentioned high speed magnetic suspended rotor axial direction detection means.
The axial direction detection ring of the utility model high speed magnetic suspended rotor axial direction detection means is located at sensor and journal bearing
Between rotor assembly, magnetic-suspension main-shaft can be directly split out from housing and first need not be removed to remove sensing axially detection ring
Device；After magnetic-suspension main-shaft cylindrical grinder can be used to the lateral surface of axially detection ring (towards biography on axially detection ring
The side of sensor) refined, it is ensured that axially detect detection faces (lateral surface, towards the side of sensor) and the magnetic suspension master of ring
The perpendicularity of axle axis, reduces the difficulty of processing of axially detection ring, improves the accuracy of detection.
The utility model centrifugal compressor includes above-mentioned high speed magnetic suspended rotor axial direction detection means, and magnetic-suspension main-shaft exists
Convenient disassembly, disassembly efficiency are high in housing, whole machine stable working state.
Brief description of the drawings
Fig. 1 is the sectional view of existing high speed magnetic suspended rotor axial direction detection means；
Fig. 2 is the sectional view of the high speed magnetic suspended rotor axial direction detection means that the utility model preferred embodiment one is provided；
Fig. 3 is cuing open for the first high speed magnetic suspended rotor axial direction detection means that the utility model preferred embodiment two is provided
View；
Fig. 4 is cuing open for second high speed magnetic suspended rotor axial direction detection means that the utility model preferred embodiment two is provided
View.
In figure：
1st, magnetic-suspension main-shaft；2nd, journal bearing rotor assembly；3rd, sensor；4th, ring is axially detected；5th, radial direction detection probe；
6th, axial detection probe；7th, magnetic shield；8th, end face；11st, the main shaft shaft shoulder.
Specific embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by specific embodiment.
Preferred embodiment one：
This preferred embodiment provides a kind of high speed magnetic suspended rotor axial direction detection means.As shown in Fig. 2 the high-speed magnetic levitation
Rotor axial detection means includes magnetic-suspension main-shaft 1, the step-like main shaft shaft shoulder 11 is provided with magnetic-suspension main-shaft 1, in master
Journal bearing rotor assembly 2 is arranged with the axle shaft shoulder 11, on the main shaft shaft shoulder 11 and positioned at the outer of journal bearing rotor assembly 2
Side is disposed with axially detection ring 4 and sensor 3.Wherein, sensor 3 can be current vortex sensor；Axially detect the He of ring 4
Magnetic-suspension main-shaft 1 is made up of non-permeable material, is respectively intended to completely cut off rotor magnetic field and the magnetic field of journal bearing rotor assembly 2
Influence to being popped one's head on sensor 3；Journal bearing rotor assembly 2 and the elastic conjunction of magnetic-suspension main-shaft 1.
To axially detect that ring 4 is changed to be located at the inner side of sensor 3, Ke Yizhi positioned at the outside of sensor 3 in existing structure
Connect and magnetic-suspension main-shaft 1 is split out from housing and first need not be removed with removal sensor 3 axially detection ring 4；By axially detection ring 4
After magnetic-suspension main-shaft 1, it is possible to use lateral surface of the cylindrical grinder to axially detection ring 4 (towards the side of sensor 3)
Refined, it is ensured that axially detect the detection faces (lateral surface, towards the side of sensor 3) and the axis of magnetic-suspension main-shaft 1 of ring 4
Perpendicularity, reduces the difficulty of processing of axially detection ring 4.
Axially detection ring 4 can be designed as circular ring after axially detection ring 4 is changed to be set on the main shaft shaft shoulder 11,
Axially detection ring 4 is fixedly connected with magnetic-suspension main-shaft 1, preferably axially detects the hot charging of ring 4 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, improve magnetic
The intrinsic frequency and critical speed of suspension main shaft 1, the disturbance of the front end of magnetic-suspension main-shaft 1 is small when rotating at a high speed, can improve the control of bearing
Precision processed, makes the structure of magnetic-suspension main-shaft 1 compacter.
Magnetic-suspension main-shaft 1 axially and radially have certain moving range, only when magnetic-suspension main-shaft 1 axially
Or the amount of movement of radial direction just needs to be adjusted the position of magnetic-suspension main-shaft 1 when reaching the moving range maximum.
Correspondingly, gap is left between sensor 3 and axial direction detection ring 4, ring 4 is axially detected in the direction of sensor 3
Axial detection probe 6 is provided with side；Because axially detection ring 4 and magnetic-suspension main-shaft 1 be fixedly connected, both relative positions
It is changeless to put, so will send letter when the lateral distance that axial detection probe 6 detects axially detection ring 4 is excessively near
Number.Gap is left between sensor 3 and magnetic-suspension main-shaft 1, is provided with the inwall towards magnetic-suspension main-shaft 1 of sensor 3
Radial direction detection probe 5, signal will be sent 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, dynamic balance calibration is carried out to high speed rotor of motor.
Preferred embodiment two：
This preferred embodiment provides a kind of high speed magnetic suspended rotor axial direction detection means, its structure and the base of preferred embodiment one
This is identical, and its difference is, as shown in figure 3, the outside of the main shaft shaft shoulder 11 be arranged tubular by non-permeable material system
Paired magnetic shield 7, the outside of magnetic shield 7 along the axial direction of magnetic-suspension main-shaft 1 be disposed with journal bearing rotor assembly 2,
Axially detect ring 4 and sensor 3；Gap, the inwall towards magnetic shield 7 of sensor 3 are left between sensor 3 and magnetic shield 7
On be provided with radial direction detection probe 5.
Magnetic-suspension main-shaft 1 can be made up of magnetic conductive material in this structure, and the energy shielding motor rotor magnetic field of magnetic shield 7 is to passing
The influence of sensor 3 and journal bearing rotor assembly 2, plays a part of 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 the versatility of magnetic-suspension main-shaft 1 is stronger (after magnetic shield 7 is removed because of certain reason
Magnetic-suspension main-shaft 1 need not be changed because of problem of materials).
Can be with as shown in figure 4, axially detection ring 4 and magnetic shield 7 simplify assembly difficulty for an overall structure；In axle
The detection faces and the axle of magnetic-suspension main-shaft 1 of axially detection ring 4 are ensured that at the beginning of being processed to detection ring 4 and the integral piece of magnetic shield 7
The perpendicularity of line, without carrying out fine grinding towards the side of sensor 3 to it again after axially detection ring 4 is installed, drops
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 means, convenient disassembly, disassembly efficiency are high in the housing for magnetic-suspension main-shaft, whole machine stable working state.
Note, above are only preferred embodiment of the present utility model and the know-why used.Those skilled in the art
It will be appreciated that the utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various
Significantly change, readjust and substitute without departing from protection domain of the present utility model.Therefore, although implement more than
Example is described in further detail to the utility model, but the utility model is not limited only to above example, is not taking off
In the case of conceiving from the utility model, more other Equivalent embodiments can also be included, and scope of the present utility model is by institute
Attached right is determined.
Claims (10)
1. a kind of high speed magnetic suspended rotor axial direction detection means, including magnetic-suspension main-shaft (1), on the magnetic-suspension main-shaft (1)
The step-like main shaft shaft shoulder (11) is provided with, journal bearing rotor assembly (2) is arranged with the main shaft shaft shoulder (11), it is special
Levy and be, axial direction has been orderly arranged outside each on the main shaft shaft shoulder (11) and positioned at the journal bearing rotor assembly (2)
Detection ring (4) and sensor (3).
2. high speed magnetic suspended rotor according to claim 1 axial direction detection means, it is characterised in that the axially detection ring
(4) it is circular ring, axially detection ring (4) is fixedly connected with the magnetic-suspension main-shaft (1).
3. high speed magnetic suspended rotor according to claim 1 axial direction detection means, it is characterised in that in the main shaft shaft shoulder
(11) be arranged on the outside of tubular by non-permeable material be made to magnetic shield (7), in the outside of the magnetic shield (7) along institute
The axial direction for stating magnetic-suspension main-shaft (1) is disposed with the journal bearing rotor assembly (2), axially detection ring (4) and the institute
State sensor (3)；Gap is left between the sensor (3) and the magnetic shield (7), described in the direction of the sensor (3)
Radial direction detection probe (5) is provided with the inwall of magnetic shield (7).
4. high speed magnetic suspended rotor according to claim 3 axial direction detection means, it is characterised in that the axially detection ring
And the magnetic shield (7) is an overall structure (4).
5. the axial detection means of high speed magnetic suspended rotor according to claim 3 or 4, it is characterised in that the magnetic suspension
Main shaft (1) is made up of magnetic conductive material.
6. high speed magnetic suspended rotor according to any one of claim 1 to 4 axial direction detection means, it is characterised in that institute
State and leave gap between sensor (3) and axially detection ring (4), in the axially detection of the direction of the sensor (3)
Axial detection probe (6) is provided with the side of ring (4).
7. high speed magnetic suspended rotor according to any one of claim 1 to 4 axial direction detection means, it is characterised in that institute
Axially detection ring (4) and the magnetic-suspension main-shaft (1) is stated to be made up of non-permeable material.
8. high speed magnetic suspended rotor according to claim 1 and 2 axial direction detection means, it is characterised in that the axially inspection
Survey ring (4) hot charging is on the magnetic-suspension main-shaft (1).
9. high speed magnetic suspended rotor according to any one of claim 1 to 4 axial direction detection means, it is characterised in that institute
State axially detection ring (4) towards the side of the sensor (3) perpendicular to the magnetic-suspension main-shaft (1) axis.
10. a kind of centrifugal compressor, it is characterised in that turn including high-speed magnetic levitation as claimed in any one of claims 1-9 wherein
Sub- axial direction detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621189665.2U CN206280289U (en) | 2016-11-04 | 2016-11-04 | High speed magnetic suspended rotor axial direction detection means and centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621189665.2U CN206280289U (en) | 2016-11-04 | 2016-11-04 | High speed magnetic suspended rotor axial direction detection means and centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206280289U true CN206280289U (en) | 2017-06-27 |
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ID=59082397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621189665.2U Active CN206280289U (en) | 2016-11-04 | 2016-11-04 | High speed magnetic suspended rotor axial direction detection means and centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206280289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734670A (en) * | 2020-07-21 | 2020-10-02 | 山东天瑞重工有限公司 | Test system and test method of magnetic suspension blower |
-
2016
- 2016-11-04 CN CN201621189665.2U patent/CN206280289U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734670A (en) * | 2020-07-21 | 2020-10-02 | 山东天瑞重工有限公司 | Test system and test method of magnetic suspension blower |
| CN111734670B (en) * | 2020-07-21 | 2020-11-10 | 山东天瑞重工有限公司 | Test system and test method of magnetic suspension blower |
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