CN112013017B - Magnetic bearing system with active adjustment and control of axial clearance - Google Patents
Magnetic bearing system with active adjustment and control of axial clearance Download PDFInfo
- Publication number
- CN112013017B CN112013017B CN202011008657.4A CN202011008657A CN112013017B CN 112013017 B CN112013017 B CN 112013017B CN 202011008657 A CN202011008657 A CN 202011008657A CN 112013017 B CN112013017 B CN 112013017B
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- 238000007789 sealing Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- 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
- F16C32/0408—Passive magnetic bearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a magnetic bearing system for actively adjusting and controlling an axial gap, which comprises a motor rotor, a motor stator, a base, a control mechanism and an adjusting mechanism, wherein the motor rotor is connected with the rotor, and the bottom of the rotor is connected with the top surface of the base; the top surface of the base forms a ring groove, the motor stator is arranged in the ring groove, and a plurality of upper grooves are uniformly distributed at the bottom of the ring groove; the control structure comprises a controller and a stepping motor which are electrically connected; the adjusting mechanism comprises a plurality of active adjusting units uniformly distributed at the bottom of the base and a plurality of passive adjusting units uniformly distributed at the bottom of the electronic stator; the active adjusting unit is connected with an output shaft of the stepping motor through a supporting shaft. The invention can realize the active adjustment and control of the stator and rotor clearance of the rotary machine motor. Compared with the prior test, the device can realize the adjustment and change of the clearance between the stator and the rotor of the motor under the condition of one-time installation, thereby achieving the purpose of verifying the optimal value of the clearance between the stator and the rotor.
Description
Technical Field
The invention belongs to the field of magnetic bearings, and particularly relates to a magnetic bearing system for actively adjusting and controlling an axial gap.
Background
The drive of the high-speed rotary machine is provided by a motor comprising two parts: a motor stator and a motor rotor. In general, a gap between a motor stator and a motor rotor (hereinafter referred to as a "stator and rotor gap") is a constant value, and according to a theoretical design result, the stator and rotor gaps generally have an optimal value, and the design result needs to be verified through a corresponding test. The existing system needs to carry out the verification test of the optimal value of the stator and rotor gap in a mode of repeatedly adjusting the axial position of the stator through multiple tests, and has complex process and long time consumption.
Disclosure of Invention
The present invention has been made to overcome the drawbacks of the prior art, and an object thereof is to provide a magnetic bearing system with active adjustment and control of the axial gap.
The invention is realized by the following technical scheme:
The magnetic bearing system comprises a motor rotor, a motor stator, a base, a control mechanism and an adjusting mechanism, wherein the motor rotor is connected with the rotor, and the bottom of the rotor is connected with the top surface of the base; the top surface of the base forms a ring groove, the motor stator is arranged in the ring groove, and a plurality of upper grooves are uniformly distributed at the bottom of the ring groove; the control mechanism comprises a controller and a stepping motor which are electrically connected; the adjusting mechanism comprises a plurality of active adjusting units uniformly distributed at the bottom of the base and a plurality of passive adjusting units uniformly distributed at the bottom of the electronic stator; the active adjusting unit is connected with an output shaft of the stepping motor through a supporting shaft.
In the above technical solution, the number of the active adjusting units is identical to the number of the passive adjusting units, and the number of the active adjusting units is not smaller than three.
In the above technical solution, the active adjusting unit and the passive adjusting unit corresponding in position are coaxially arranged.
In the above technical scheme, the passive adjusting unit comprises a fixed shaft connected with the bottom surface of the motor stator, an upper permanent magnet bearing arranged at the bottom of the fixed shaft, an upper sliding bearing sleeved outside the fixed shaft, and the upper sliding bearing is fixed in the upper groove.
In the above technical scheme, the initiative adjusting unit includes the branch axle, and its bottom is connected with the back shaft is perpendicular, and the top sets up down permanent magnetism bearing, and slide bearing is established to the outside cover, and slide bearing sets up in fixed cover down, and fixed cover is fixed in the base bottom.
In the technical scheme, the polarities of the opposite end surfaces of the upper permanent magnet bearing and the lower permanent magnet bearing are the same.
In the technical scheme, the upper permanent magnet bearing and the lower permanent magnet bearing are both cylindrical structures.
In the technical scheme, the device further comprises a bracket connected with the bottom of the base.
In the above technical scheme, the sealing cover is arranged above the base, and the motor rotor and the motor stator are both positioned in a vacuum space enclosed by the base and the sealing cover.
In the above technical scheme, a plurality of lower grooves are formed at the top of the base, the number of the lower grooves is the same as that of the upper grooves, and the positions are in one-to-one correspondence.
The beneficial effects of the invention are as follows:
the invention provides a magnetic bearing system for actively adjusting and controlling the axial clearance position of a stator of a high-speed rotating machine motor, which can realize the active adjustment and control of the clearance between the stator and the rotor of the rotating machine motor. Compared with the prior test, the device can realize the adjustment and change of the clearance between the stator and the rotor of the motor under the condition of one-time installation, thereby achieving the purpose of verifying the optimal value of the clearance between the stator and the rotor.
Drawings
FIG. 1 is a schematic diagram of the magnetic bearing system of the present invention with active adjustment and control of axial clearances.
Wherein:
1. rotor of motor with 2 rotating shafts
3. Motor stator 4 base
5. Seal cover 6 fixed shaft
7. Upper permanent magnet bearing of upper sliding bearing 8
9. Lower permanent magnet bearing 10 lower sliding bearing
11. Bracket 12 fixing sleeve
13. Control cabinet with supporting shaft 14
15. The stepper motor 16 is split.
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the magnetic bearing system for active adjustment and control of axial gap of the present invention is further described below with reference to the accompanying drawings of the specification and by means of specific embodiments.
As shown in fig. 1, a magnetic bearing system for actively adjusting and controlling axial clearance comprises a motor rotor 2, a motor stator 3, a base 4, a control mechanism and an adjusting mechanism,
The motor rotor 2 is connected with the rotor 1, and the bottom of the rotor 1 is connected with the top surface of the base 4; the top surface of the base 4 forms a ring groove, the motor stator 3 is arranged in the ring groove, the motor stator 3 is positioned at the lower ends of the motor rotor 2 and the rotor 1, and a plurality of upper grooves are uniformly distributed at the bottom of the ring groove;
the control mechanism comprises a controller 14 and a stepping motor 15 which are electrically connected;
The adjusting mechanism comprises a plurality of active adjusting units uniformly distributed at the bottom of the base 4 and a plurality of passive adjusting units uniformly distributed at the bottom of the electronic stator 3; the active adjusting unit is connected with the output shaft of the stepping motor 15 through the supporting shaft 13.
The number of the active adjusting units is consistent with that of the passive adjusting units, the active adjusting units and the passive adjusting units are not smaller than three groups, and the active adjusting units and the passive adjusting units which are corresponding in position are coaxially arranged.
The passive adjusting unit comprises a fixed shaft 6 connected with the bottom surface of the motor stator 3, an upper permanent magnet bearing 8 arranged at the bottom of the fixed shaft 6, an upper sliding bearing 7 sleeved outside the fixed shaft 6, and the upper sliding bearing 7 is fixed in the upper groove.
The active adjusting unit comprises a split shaft 16, the bottom of the split shaft is vertically connected with a supporting shaft 13, a lower permanent magnet bearing 9 is arranged at the top of the split shaft, a lower sliding bearing 10 is sleeved outside the split shaft, the lower sliding bearing 10 is arranged in a fixed sleeve 12, and the fixed sleeve 12 is fixed at the bottom of the base 4.
The upper permanent magnet bearing 8 and the lower permanent magnet bearing 9 are of cylindrical structures, the polarities of the opposite end surfaces of the upper permanent magnet bearing 8 and the lower permanent magnet bearing are the same as the polarities of the N poles or the S poles, and a magnetic field formed between the upper permanent magnet bearing and the lower permanent magnet bearing generates a repulsive force effect.
And a sealing cover 5 is arranged above the base 4, and the motor rotor 2 and the motor stator 3 are both positioned in a vacuum space enclosed by the base 4 and the sealing cover 5.
The top of the base 4 is provided with a plurality of lower grooves, the number of the lower grooves is the same as that of the upper grooves, and the positions of the lower grooves are in one-to-one correspondence.
The magnetic bearing system for active adjustment and control of the axial gap further comprises a bracket 11 connected to the bottom of the base 4.
The working principle of the invention is as follows:
After the device is installed, the control cabinet 14 supplies power to the stepping motor 15, an output shaft of the stepping motor 15 drives the supporting shaft 13 connected with the stepping motor to move up and down, and because the polarity of the opposite surfaces of the lower permanent magnet bearing 9 arranged at the top end of the supporting shaft 13 and the upper permanent magnet bearing 8 arranged at the lower end of the motor stator 3 is the same, a magnetic field formed between the lower permanent magnet bearing 9 and the upper permanent magnet bearing produces a repulsive force effect, so that the supporting shaft 13 moves up and down to drive the upper and lower permanent magnet bearings to move up and down, and further the motor stator 3 moves up and down, and the gap between the motor stator 3 and the motor rotor 2 is adjusted.
The invention provides a magnetic bearing system for actively adjusting and controlling the axial clearance position of a stator of a high-speed rotating machine motor, which can realize the active adjustment and control of the clearance between the stator and the rotor of the rotating machine motor. Compared with the prior test, the device can realize the adjustment and change of the clearance between the stator and the rotor of the motor under the condition of one-time installation, thereby achieving the purpose of verifying the optimal value of the clearance between the stator and the rotor.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The applicant declares that the above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that are easily conceivable within the technical scope of the present invention disclosed by the present invention fall within the scope of the present invention and the disclosure.
Claims (7)
1. The utility model provides a magnetic bearing system of axial clearance initiative regulation and control, includes motor rotor (2), motor stator (3) and base (4), its characterized in that: also comprises a control mechanism and an adjusting mechanism,
The motor rotor (2) is connected with the rotor (1), and the bottom of the rotor (1) is connected with the top surface of the base (4); the top surface of the base (4) forms a ring groove, the motor stator (3) is arranged in the ring groove, and a plurality of upper grooves are uniformly distributed at the bottom of the ring groove;
the control mechanism comprises a controller (14) and a stepping motor (15) which are electrically connected;
The adjusting mechanism comprises a plurality of active adjusting units uniformly distributed at the bottom of the base (4) and a plurality of passive adjusting units uniformly distributed at the bottom of the electronic stator (3); the active adjusting unit is connected with an output shaft of the stepping motor (15) through a supporting shaft (13);
The passive adjusting unit comprises a fixed shaft (6) connected with the bottom surface of the motor stator (3), an upper permanent magnet bearing (8) arranged at the bottom of the fixed shaft (6), an upper sliding bearing (7) sleeved outside the fixed shaft (6), and the upper sliding bearing (7) is fixed in the upper groove;
The active adjusting unit comprises a split shaft (16), the bottom of the split shaft is vertically connected with a supporting shaft (13), a lower permanent magnet bearing (9) is arranged at the top of the split shaft, a lower sliding bearing (10) is sleeved outside the split shaft, the lower sliding bearing (10) is arranged in a fixed sleeve (12), and the fixed sleeve (12) is fixed at the bottom of the base (4);
The number of the active adjusting units is consistent with that of the passive adjusting units, and the active adjusting units and the passive adjusting units are not smaller than three groups.
2. The magnetic bearing system for active adjustment and control of axial clearances of claim 1, wherein: the active adjusting unit and the passive adjusting unit which are corresponding in position are coaxially arranged.
3. The magnetic bearing system for active adjustment and control of axial clearances of claim 1, wherein: the polarities of the opposite end surfaces of the upper permanent magnet bearing (8) and the lower permanent magnet bearing (9) are the same.
4. The magnetic bearing system for active adjustment and control of axial play of claim 3, wherein: the upper permanent magnet bearing (8) and the lower permanent magnet bearing (9) are both cylindrical structures.
5. The magnetic bearing system for active adjustment and control of axial clearances of claim 1, wherein: the device also comprises a bracket (11) connected with the bottom of the base (4).
6. The magnetic bearing system for active adjustment and control of axial clearances of claim 1, wherein: a sealing cover (5) is arranged above the base (4), and the motor rotor (2) and the motor stator (3) are both located in a vacuum space surrounded by the base (4) and the sealing cover (5).
7. The magnetic bearing system for active adjustment and control of axial clearances of claim 1, wherein: the top of the base (4) is provided with a plurality of lower grooves, the number of the lower grooves is the same as that of the upper grooves, and the positions of the lower grooves are in one-to-one correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011008657.4A CN112013017B (en) | 2020-09-23 | 2020-09-23 | Magnetic bearing system with active adjustment and control of axial clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011008657.4A CN112013017B (en) | 2020-09-23 | 2020-09-23 | Magnetic bearing system with active adjustment and control of axial clearance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112013017A CN112013017A (en) | 2020-12-01 |
| CN112013017B true CN112013017B (en) | 2024-05-14 |
Family
ID=73522672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011008657.4A Active CN112013017B (en) | 2020-09-23 | 2020-09-23 | Magnetic bearing system with active adjustment and control of axial clearance |
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| Country | Link |
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| CN (1) | CN112013017B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324744A (en) * | 2021-05-17 | 2021-08-31 | 核工业理化工程研究院 | Rotor external adjustable temperature adjusting plate |
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| US4700094A (en) * | 1984-12-17 | 1987-10-13 | The Charles Stark Draper Laboratory, Inc. | Magnetic suspension system |
| EP1058368A2 (en) * | 1999-05-31 | 2000-12-06 | ABB Alstom Power (Schweiz) AG | Bearing support for generator rotors in magnetic field |
| WO2013101781A1 (en) * | 2011-12-31 | 2013-07-04 | Rotonix Usa, Inc. | Electromechanical flywheel containment system |
| CN203926400U (en) * | 2014-06-24 | 2014-11-05 | 山东大学 | A kind of adjustable rigidity radial permanent magnet bearing |
| EP2884125A2 (en) * | 2013-12-13 | 2015-06-17 | Pfeiffer Vacuum Gmbh | Rotating system |
| WO2019076419A1 (en) * | 2017-10-22 | 2019-04-25 | Maersk Drilling A/S | Flywheel systems and flywheel bearing modules |
| EP3623654A1 (en) * | 2018-09-14 | 2020-03-18 | EneRes Ltd. Harneys Services (Cayman) | Magnetic bearing and flywheel accumulator |
| EP3683449A1 (en) * | 2019-12-18 | 2020-07-22 | Pfeiffer Vacuum GmbH | Magnetic bearing and vacuum apparatus |
| CN212455217U (en) * | 2020-09-23 | 2021-02-02 | 核工业理化工程研究院 | Magnetic bearing system with axial clearance actively adjusted and controlled |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5460566B2 (en) * | 2010-12-13 | 2014-04-02 | 株式会社日立製作所 | Axial gap type rotating electrical machine |
| US9225222B2 (en) * | 2012-10-18 | 2015-12-29 | Siemens Industry, Inc. | Magnetic bearing apparatus and method for varying shaft thrust load support in induction motors and other rotating machinery |
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2020
- 2020-09-23 CN CN202011008657.4A patent/CN112013017B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4700094A (en) * | 1984-12-17 | 1987-10-13 | The Charles Stark Draper Laboratory, Inc. | Magnetic suspension system |
| EP1058368A2 (en) * | 1999-05-31 | 2000-12-06 | ABB Alstom Power (Schweiz) AG | Bearing support for generator rotors in magnetic field |
| WO2013101781A1 (en) * | 2011-12-31 | 2013-07-04 | Rotonix Usa, Inc. | Electromechanical flywheel containment system |
| EP2884125A2 (en) * | 2013-12-13 | 2015-06-17 | Pfeiffer Vacuum Gmbh | Rotating system |
| CN203926400U (en) * | 2014-06-24 | 2014-11-05 | 山东大学 | A kind of adjustable rigidity radial permanent magnet bearing |
| WO2019076419A1 (en) * | 2017-10-22 | 2019-04-25 | Maersk Drilling A/S | Flywheel systems and flywheel bearing modules |
| EP3623654A1 (en) * | 2018-09-14 | 2020-03-18 | EneRes Ltd. Harneys Services (Cayman) | Magnetic bearing and flywheel accumulator |
| EP3683449A1 (en) * | 2019-12-18 | 2020-07-22 | Pfeiffer Vacuum GmbH | Magnetic bearing and vacuum apparatus |
| CN212455217U (en) * | 2020-09-23 | 2021-02-02 | 核工业理化工程研究院 | Magnetic bearing system with axial clearance actively adjusted and controlled |
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| Publication number | Publication date |
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| CN112013017A (en) | 2020-12-01 |
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