CN114607634A - Shaft sleeve structure for protecting electromagnetic bearing of main helium fan - Google Patents
Shaft sleeve structure for protecting electromagnetic bearing of main helium fan Download PDFInfo
- Publication number
- CN114607634A CN114607634A CN202210257332.2A CN202210257332A CN114607634A CN 114607634 A CN114607634 A CN 114607634A CN 202210257332 A CN202210257332 A CN 202210257332A CN 114607634 A CN114607634 A CN 114607634A
- Authority
- CN
- China
- Prior art keywords
- shaft sleeve
- bearing
- auxiliary bearing
- outer cover
- helium
- 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
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 48
- 239000001307 helium Substances 0.000 title claims abstract description 48
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Images
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
- F04D29/056—Bearings
- F04D29/058—Bearings magnetic; electromagnetic
-
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/0563—Bearings cartridges
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a shaft sleeve structure for protecting an electromagnetic bearing of a helium circulator, belonging to the field of ventilators and comprising an axial electromagnetic bearing, a thrust disc, an auxiliary bearing outer cover, a shaft sleeve and a locking nut; the upper end of the rotor of the main helium fan is connected with a shaft sleeve; the upper part of the shaft sleeve is connected with a locking nut; the shaft sleeve is matched with the auxiliary bearing outer cover, and the lower part of the shaft sleeve is connected with the auxiliary bearing outer cover; the bottom of the outer cover of the auxiliary bearing is connected with a main helium fan; the lower part of the outer cover of the auxiliary bearing is connected with the auxiliary bearing; the auxiliary bearing is matched with the main helium fan rotor, and the inner side of the auxiliary bearing is connected with the main helium fan rotor. The invention discloses a shaft sleeve structure for protecting an electromagnetic bearing of a helium circulator, which solves the problems of high rotating speed, verticality, large axial force, and electromagnetic bearing support structure and protection of the electromagnetic bearing.
Description
Technical Field
The invention relates to a fan, in particular to a shaft sleeve structure for protecting an electromagnetic bearing of a helium circulator.
Background
The electromagnetic bearing is one of important parts on the helium circulator, and is the first high-power helium circulator supported by the electromagnetic bearing in the world, and no product with equivalent capacity and similar structure exists internationally.
The main helium fan works in a pure helium medium environment, and simultaneously requires the operation speed of a bearing to be 4000r/min, bears the axial force of 8.5t and bears all loads under various operation conditions of the main helium fan. The auxiliary bearing in the electromagnetic bearing does not play a supporting role when the main helium fan operates, only supports the fan rotor when the fan is assembled and shut down, and simultaneously can bear the impact force of falling of the fan rotor and the influence of friction, abrasion and heating caused by idle rotation when the electromagnetic bearing fails and can not provide electromagnetic force, so that the auxiliary bearing is an important component of an electromagnetic bearing system and also an important guarantee for engineering application of the electromagnetic bearing. The rotor falls on the auxiliary bearing after the electromagnetic bearing fails due to reasons in the operation of the main helium fan rotor, and if the auxiliary bearing is damaged and the bearing falls on a frame, the thrust disc and the axial electromagnetic bearing are in direct contact due to the axial force of the whole main helium fan rotor, the electromagnetic bearing is damaged, and the whole fan rotor is damaged finally, so that the electromagnetic bearing is protected.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a shaft sleeve structure for protecting an electromagnetic bearing of a helium circulator, which is provided with the shaft sleeve structure for protecting the electromagnetic bearing of the helium circulator and solves the problems of high rotating speed, verticality, large axial force, electromagnetic bearing supporting structure and electromagnetic bearing protection.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a shaft sleeve structure for protecting an electromagnetic bearing of a helium circulator, which comprises an axial electromagnetic bearing, a thrust disc, an auxiliary bearing outer cover, a shaft sleeve and a locking nut, wherein the axial electromagnetic bearing is arranged on the thrust disc; the upper end of the rotor of the main helium fan is connected with a shaft sleeve; the upper part of the shaft sleeve is connected with a locking nut; the shaft sleeve is matched with the auxiliary bearing outer cover, and the lower part of the shaft sleeve is connected with the auxiliary bearing outer cover; the bottom of the outer cover of the auxiliary bearing is connected with a main helium fan; the lower part of the outer cover of the auxiliary bearing is connected with the auxiliary bearing; the auxiliary bearing is matched with the main helium fan rotor, and the inner side of the auxiliary bearing is connected with the main helium fan rotor; the upper end and the lower end of the thrust disc are connected with a magnetic bearing; the outer side of the magnetic bearing is connected with a main helium fan; the outer side of the thrust disc is connected with a helium circulator.
The further technical scheme of the invention is that the shaft sleeve is fixed by a locking nut.
The invention has the further technical scheme that the auxiliary bearing outer cover is fixed by screws.
The invention has the beneficial effects that:
the shaft sleeve structure for protecting the electromagnetic bearing of the helium circulator, provided by the invention, has the shaft sleeve structure for protecting the electromagnetic bearing of the helium circulator, and solves the problems of high rotating speed, verticality, large axial force, electromagnetic bearing supporting structure and electromagnetic bearing protection.
Drawings
Fig. 1 is a shaft sleeve structure for protecting an electromagnetic bearing of a helium main blower according to the invention.
Fig. 2 is a structural sectional view of an outer cover 04 of the auxiliary bearing of the present invention.
Fig. 3 is a structural sectional view of the sleeve 05 of the present invention.
In the figure:
an axial electromagnetic bearing 01; a thrust disc 02; an auxiliary bearing 03; an auxiliary bearing outer cover 04; a shaft sleeve 05; the nut 06 is locked.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
The first embodiment is as follows:
the embodiment is described below with reference to fig. 1, 2 and 3, and the invention relates to a fan, and more specifically to a shaft sleeve structure for protecting an electromagnetic bearing of a helium circulator, which comprises an axial electromagnetic bearing 01, a thrust disc 02, an auxiliary bearing 03, an auxiliary bearing outer cover 04, a shaft sleeve 05 and a lock nut 06; the upper end of the rotor of the main helium fan is connected with a shaft sleeve 05; the upper part of the shaft sleeve 05 is connected with a locking nut 06; the shaft sleeve 05 is matched with the auxiliary bearing outer cover 04, and the lower part of the shaft sleeve 05 is connected with the auxiliary bearing outer cover 04; the bottom of the auxiliary bearing outer cover 04 is connected with a main helium fan; the lower part of the auxiliary bearing outer cover 04 is connected with an auxiliary bearing 03; the auxiliary bearing 03 is matched with the main helium fan rotor, and the inner side of the auxiliary bearing 03 is connected with the main helium fan rotor; the upper end and the lower end of the thrust disc 02 are connected with a magnetic bearing 01; the outer side of the magnetic bearing 01 is connected with a helium circulator; the outer side of the thrust disc 02 is connected with a main helium fan; the problems of high rotating speed, vertical type, large axial force, electromagnetic bearing supporting structure and electromagnetic bearing protection are solved.
The second embodiment is as follows:
the embodiment is described below with reference to fig. 1, 2 and 3, and the embodiment is further described, in which the shaft sleeve 05 is fixed by the lock nut 06, so that the fixing manner is simple, convenient and quick, and is convenient to replace.
The third concrete implementation mode:
the embodiment is described below with reference to fig. 1, 2, and 3, and the embodiment further describes the first embodiment, in which the auxiliary bearing outer cover 04 is fixed by screws, so that the fixing manner is simple and convenient, and is convenient to replace.
The working principle is as follows: the upper end of the rotor of the main helium fan is provided with a shaft sleeve 05, the upper end of the shaft sleeve 05 is fixed by a locking nut 06, when the main helium fan operates normally, a 0.3mm gap is reserved between the lower end of the shaft sleeve 05 and the inner ring of the auxiliary bearing 03, and a 0.7mm gap is reserved between the shaft sleeve 05 and the upper end surface and the side surface of the outer cover 04 of the auxiliary bearing; the clearance between the thrust disc 02 and the axial electromagnetic bearing 01 is 0.8mm, when the rotor falls, the auxiliary bearing 03 bears the axial load of the rotor, and in case of damage of the auxiliary bearing 03, the shaft sleeve 05 and the locking nut 06 bear the whole load of the fan rotor and directly fall onto the outer cover 04 of the auxiliary bearing, so that the axial electromagnetic bearing 01 is protected from being damaged, and the rotor of the main helium fan is also protected from being damaged.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (3)
1. A shaft sleeve structure for protecting an electromagnetic bearing of a main helium fan is characterized by comprising an axial electromagnetic bearing (01), a thrust disc (02), an auxiliary bearing (03), an auxiliary bearing outer cover (04), a shaft sleeve (05) and a locking nut (06);
the upper end of the rotor of the main helium fan is connected with a shaft sleeve (05);
the upper part of the shaft sleeve (05) is connected with a locking nut (06);
the shaft sleeve (05) is matched with the auxiliary bearing outer cover (04), and the lower part of the shaft sleeve (05) is connected with the auxiliary bearing outer cover (04);
the bottom of the auxiliary bearing outer cover (04) is connected with a helium circulator;
the lower part of the auxiliary bearing outer cover (04) is connected with an auxiliary bearing (03);
the auxiliary bearing (03) is adapted to the main helium fan rotor, and the inner side of the auxiliary bearing (03) is connected with the main helium fan rotor;
the upper end and the lower end of the thrust disc (02) are connected with a magnetic bearing (01);
the outer side of the magnetic bearing (01) is connected with a helium circulator;
the outer side of the thrust disc (02) is connected with a helium circulator.
2. The shaft sleeve structure for protecting the electromagnetic bearing of the helium circulator of claim 1, wherein:
the shaft sleeve (05) is fixed by a locking nut (06).
3. The shaft sleeve structure for protecting the electromagnetic bearing of the helium circulator of claim 1, wherein:
the auxiliary bearing outer cover (04) is fixed by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210257332.2A CN114607634A (en) | 2022-03-16 | 2022-03-16 | Shaft sleeve structure for protecting electromagnetic bearing of main helium fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210257332.2A CN114607634A (en) | 2022-03-16 | 2022-03-16 | Shaft sleeve structure for protecting electromagnetic bearing of main helium fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114607634A true CN114607634A (en) | 2022-06-10 |
Family
ID=81863463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210257332.2A Pending CN114607634A (en) | 2022-03-16 | 2022-03-16 | Shaft sleeve structure for protecting electromagnetic bearing of main helium fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114607634A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180163739A1 (en) * | 2016-12-12 | 2018-06-14 | Honeywell International Inc. | Turbocharger assembly |
| CN109322917A (en) * | 2018-11-05 | 2019-02-12 | 南京航空航天大学 | A kind of radial and axial protection structure of magnetic suspension bearing |
| CN109450157A (en) * | 2018-12-06 | 2019-03-08 | 哈尔滨电气股份有限公司 | The big energy storage capacity variable cross-section rotor flywheel energy storage system of Permanent-magnet bearing and electromagnetic bearing mixing bearing |
| CN112242778A (en) * | 2020-09-25 | 2021-01-19 | 中车永济电机有限公司 | High-power high-speed magnetic suspension permanent magnet motor |
| CN112283128A (en) * | 2020-11-18 | 2021-01-29 | 佳木斯电机股份有限公司 | Cooling and ventilating structure of main helium fan motor and main helium fan motor |
-
2022
- 2022-03-16 CN CN202210257332.2A patent/CN114607634A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180163739A1 (en) * | 2016-12-12 | 2018-06-14 | Honeywell International Inc. | Turbocharger assembly |
| CN108223131A (en) * | 2016-12-12 | 2018-06-29 | 霍尼韦尔国际公司 | Turbocharger assembly |
| CN109322917A (en) * | 2018-11-05 | 2019-02-12 | 南京航空航天大学 | A kind of radial and axial protection structure of magnetic suspension bearing |
| CN109450157A (en) * | 2018-12-06 | 2019-03-08 | 哈尔滨电气股份有限公司 | The big energy storage capacity variable cross-section rotor flywheel energy storage system of Permanent-magnet bearing and electromagnetic bearing mixing bearing |
| CN112242778A (en) * | 2020-09-25 | 2021-01-19 | 中车永济电机有限公司 | High-power high-speed magnetic suspension permanent magnet motor |
| CN112283128A (en) * | 2020-11-18 | 2021-01-29 | 佳木斯电机股份有限公司 | Cooling and ventilating structure of main helium fan motor and main helium fan motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2008266814B2 (en) | Lift magnet mechanism for flywheel power storage systems | |
| US6255752B1 (en) | Mounting for a turbo-machine rotor and its use | |
| AU2008307475B2 (en) | Hybrid touchdown bearing system | |
| WO2004068677A1 (en) | Energy storage flywheel with minimum power magnetic bearing and motor/generator | |
| US6617732B1 (en) | Magnetic bearing structure | |
| US5588754A (en) | Backup bearings for extreme speed touch down applications | |
| CA2196243A1 (en) | Bearing arrangement for rotating members | |
| CN114607634A (en) | Shaft sleeve structure for protecting electromagnetic bearing of main helium fan | |
| JP2000291655A (en) | Rolling bearing for protecting magnetic bearing | |
| JPS63190930A (en) | Magnetic bearing device | |
| CN205244137U (en) | Magnetic bearing | |
| CN109274206A (en) | The curved surface variable cross-section rotor flywheel energy storage system of Permanent-magnet bearing and electromagnetic bearing mixing bearing | |
| CN102767565A (en) | Rolling sliding integrated auxiliary bearing | |
| JP2985111B2 (en) | Motor bearing device | |
| CN217010608U (en) | Magnetic suspension compressor abnormal shutdown protection device | |
| JP3035876B2 (en) | Canned motor pump | |
| CN107060909A (en) | A kind of turbomachinery with new thrust bearing | |
| JP3414918B2 (en) | Rotary electric machine with magnetic bearing | |
| CN215171566U (en) | Axial magnetic-gas combined bearing structure | |
| CN216975313U (en) | Magnetic suspension air blower | |
| CN101619745A (en) | Force-bearing device capable of bearing large axial load | |
| JPH10159707A (en) | Flywheel | |
| JP2546625Y2 (en) | Magnetic bearing control device | |
| CN111734741A (en) | Axial magnetic-gas combined bearing device | |
| Zhang et al. | Mechanical characteristics of thrust magnetic bearing and its effect on radial magnetic bearings in the system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220610 |