CN105333009B - Magnetic suspension bearing isolates rotor structure - Google Patents
Magnetic suspension bearing isolates rotor structure Download PDFInfo
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- CN105333009B CN105333009B CN201510903509.1A CN201510903509A CN105333009B CN 105333009 B CN105333009 B CN 105333009B CN 201510903509 A CN201510903509 A CN 201510903509A CN 105333009 B CN105333009 B CN 105333009B
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- rotor
- magnetic suspension
- sheath
- suspension bearing
- stator
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a kind of magnetic suspension bearing to isolate rotor structure, including pedestal, magnetic suspension bearing, rotor and stator, magnetic suspension bearing and stator are supported on pedestal respectively, rotor is arranged in magnetic suspension bearing and stator, also include fluid container and sheath, sheath is one end open, the closed barrel-like structure of the other end, sheath is arranged between magnetic suspension bearing and rotor and between stator and rotor, the openend of sheath stretches in be connected outside pedestal with fluid container, and the inner chamber of sheath and the inner chamber of fluid container connect, the left end of rotor is stretched in the inner chamber of fluid container.Sealing structure effect of the present invention is good, long lifespan, sealing structure is not limited by the rotating speed and linear resonance surface velocity of rotor, in addition to rotor and sheath, other parts are not influenceed by by sealing fluid, to material therefor, structure and performance without particular/special requirement, magnetic suspension bearing need not lubricate, simple in construction, long lifespan.
Description
Technical field：
The present invention relates to a kind of magnetic suspension bearing to isolate rotor structure, and it belongs to magnetic levitation technology field.
Background technology：
Rotating machinery can be summarized as using extremely widespread one kind machinery, its essential characteristic：Will by one group of bearing
Rotor is arranged on pedestal, and work is completed by the rotation of rotor.
Rotor in rotating machinery usually needs to penetrate pedestal, but we need to ensure machinery in many application scenarios
Sealing, it is therefore desirable to axle envelope is installed between rotor and pedestal.Existing axle envelope can be divided into contact seal and non-connect
Touch seals two classes.Contact seal, such as seal with O ring, packing seal, there is preferable sealing effectiveness, but can not bear
Excessive linear resonance surface velocity.Existing non-contacting seal, such as oil sealing, labyrinth seal, carbon ring seal, although can bear compared with
Big linear resonance surface velocity, but sealing effectiveness is more very different than contact seal.Many times need contactless close by increasing
The methods of quantity of envelope, increase sealing gland (fluid-tight), reduces leakage rate, thus complicated, bulky.
Either contact seal or non-contacting seal are all dynamic sealings, it is impossible to accomplish zero leakage, it seals effect
Contradiction between fruit and life-span can not also overcome.
But as requirement of the modern industry to the rotating speed of rotating machinery, leakage rate, life-span and cost synchronously improves, it is conventional
The performance of axle envelope has been difficult to meet to require.Then some rotating machineries abandon dynamic axle envelope, then are carried out on pedestal
Static sealing.Because relative motion is not present in static sealing, therefore avoided the requirement to rotating speed and life-span, utilization it is very low into
Zero leakage can originally be accomplished.
But use the static sealing of pedestal sealing structure to mean that the fluid sealed can enter base interior, it will turn
Son, bearing and other parts all soak in a fluid.This will influence the lubrication of bearing, influences the radiating of inner body,
And a series of problems, such as causing burn into corrosion of the fluid to internal mechanical, fire and explosive risks and electric leakage.Therefore pedestal sealing knot
Structure may be only available for some special occasions, it is impossible to substitute axle envelope completely.
Therefore, it is necessory to be improved to prior art to solve the deficiency of prior art.
The content of the invention：
The present invention is to provide a kind of magnetic suspension bearing isolation rotor knot to solve the above-mentioned problems of the prior art
Structure.
The technical solution adopted in the present invention has：A kind of magnetic suspension bearing isolates rotor structure, including pedestal, magnetic suspension shaft
Hold, rotor and stator, the magnetic suspension bearing and stator are supported on pedestal respectively, rotor is arranged in magnetic suspension bearing and stator
Interior, it also includes fluid container and sheath, and the sheath is one end open, the closed barrel-like structure of the other end, and sheath is arranged in
Between magnetic suspension bearing and rotor and between stator and rotor, the openend of sheath stretches in be connected outside pedestal with fluid container,
And the inner chamber of sheath and the inner chamber of fluid container connect, the left end of rotor is stretched in the inner chamber of fluid container.
Further, O-ring seal is provided between the sheath and fluid container.
The present invention has the advantages that：
1) sealing effectiveness of structure of the present invention is not limited by the rotating speed and linear resonance surface velocity of rotor；
2) sealing of each part in structure of the present invention is static sealing, simple in construction, cost is low, long lifespan, zero lets out
Leakage；
3) in addition to rotor and sheath, other parts are not influenceed by by sealing fluid, to material therefor, structure and performance without spy
It is different to require；
4) magnetic suspension bearing need not lubricate, simple in construction, long lifespan.
Brief description of the drawings：
Fig. 1 is the structure chart of the present invention.
Embodiment：
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, magnetic suspension bearing isolation rotor structure of the present invention, including pedestal 1, magnetic suspension bearing 2, the and of rotor 3
Stator 6, magnetic suspension bearing 2 and stator 6 are supported on pedestal 1, and rotor 3 is arranged in magnetic suspension bearing 2 and stator 6.Turning
Sheath 5 is provided between son 3 and magnetic suspension bearing 2 and stator 6, and the sheath 5 is one end open, the closed tubbiness knot of the other end
Structure, the left side openend of sheath 5 stretches in be tightly connected outside pedestal 1 with fluid container 4, and the inner chamber of sheath 5 and fluid container 4
Inner chamber is connected, and the left end of rotor 3 is stretched in the inner chamber of fluid container 4.
Static sealing is used between sheath 5 and fluid container 4 in the present invention, the static sealing structure is O-ring seal 7
Or filler.
The characteristics of magnetic suspension bearing of the present invention isolation rotor structure is：
1) rotor 3 is wrapped in sheath 5, and is supported by magnetic suspension bearing 2, and rotor 3 is not in contact with pedestal 1, due to
Magnetic suspension bearing 2 is without friction so need not lubricate, also without rotating speed and life-span limitation.
2) sheath 5 is the closed container of an one end open, and openend is connected with being filled with the fluid container 4 of sealing fluid,
And rotor 3 and pedestal 1 are separated, gap of the sealing fluid full of rotor 1 with sheath 5.
3) junction of sheath 5 and fluid container 4 uses static sealing, and pedestal 1 need not seal, the structure of static sealing
Simply, cost is low, long lifespan, and is easily done zero leakage.
4) other parts are not in contact with sealing fluid in pedestal 1, will not be influenceed by fluid.As long as the therefore He of sheath 1
The shell of rotor 3 ensures that safety from the material that can tolerate fluid influence, without to other parts in pedestal 1
Material carries out specially treated.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, some improvement can also be made under the premise without departing from the principles of the invention, and these improvement also should be regarded as the present invention's
Protection domain.
Claims (2)
1. a kind of magnetic suspension bearing isolates rotor structure, including pedestal (1), magnetic suspension bearing (2), rotor (3) and stator (6),
The magnetic suspension bearing (2) and stator (6) are supported on pedestal (1) respectively, and rotor (3) is arranged in magnetic suspension bearing (2) and determined
In sub (6), it is characterised in that：Also include fluid container (4) and sheath (5), the sheath (5) is one end open, and the other end is close
The barrel-like structure closed, sheath (5) are arranged between magnetic suspension bearing (2) and rotor (3) and between stator (6) and rotor (3),
The openend of sheath (5) stretches in pedestal (1) and is connected outside with fluid container (4), and the inner chamber of sheath (5) and fluid container (4)
Inner chamber is connected, and the left end of rotor (3) is stretched in the inner chamber of fluid container (4).
2. magnetic suspension bearing as claimed in claim 1 isolates rotor structure, it is characterised in that：The sheath (5) is held with fluid
Device (4) is provided with O-ring seal (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903509.1A CN105333009B (en) | 2015-12-09 | 2015-12-09 | Magnetic suspension bearing isolates rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903509.1A CN105333009B (en) | 2015-12-09 | 2015-12-09 | Magnetic suspension bearing isolates rotor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105333009A CN105333009A (en) | 2016-02-17 |
| CN105333009B true CN105333009B (en) | 2018-04-06 |
Family
ID=55283726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510903509.1A Active CN105333009B (en) | 2015-12-09 | 2015-12-09 | Magnetic suspension bearing isolates rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105333009B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4988906A (en) * | 1988-09-08 | 1991-01-29 | The Dow Chemical Company | Magnetic bearing assembly |
| CN1068400A (en) * | 1991-07-09 | 1993-01-27 | 北京市西城区新开通用试验厂 | Numerically-controlled flooding booster pump |
| CN1730947A (en) * | 2004-08-04 | 2006-02-08 | 李国坤 | Magnetic pump |
| CN101907132A (en) * | 2010-08-20 | 2010-12-08 | 南京航空航天大学 | Supporting device for rotor system of magnetic suspension bearing |
| CN103307103A (en) * | 2013-05-08 | 2013-09-18 | 南京航空航天大学 | Combined support device of magnetic bearing rotor system |
| CN103441648A (en) * | 2013-08-07 | 2013-12-11 | 中国科学院电工研究所 | High-temperature superconducting magnetic levitation motor |
| CN205207431U (en) * | 2015-12-09 | 2016-05-04 | 南京磁谷科技有限公司 | Magnetic suspension bearing keeps apart rotor structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001254693A (en) * | 2000-03-09 | 2001-09-21 | Tokyo Buhin Kogyo Co Ltd | Magnetic levitation type seal-less pump |
-
2015
- 2015-12-09 CN CN201510903509.1A patent/CN105333009B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4988906A (en) * | 1988-09-08 | 1991-01-29 | The Dow Chemical Company | Magnetic bearing assembly |
| CN1068400A (en) * | 1991-07-09 | 1993-01-27 | 北京市西城区新开通用试验厂 | Numerically-controlled flooding booster pump |
| CN1730947A (en) * | 2004-08-04 | 2006-02-08 | 李国坤 | Magnetic pump |
| CN101907132A (en) * | 2010-08-20 | 2010-12-08 | 南京航空航天大学 | Supporting device for rotor system of magnetic suspension bearing |
| CN103307103A (en) * | 2013-05-08 | 2013-09-18 | 南京航空航天大学 | Combined support device of magnetic bearing rotor system |
| CN103441648A (en) * | 2013-08-07 | 2013-12-11 | 中国科学院电工研究所 | High-temperature superconducting magnetic levitation motor |
| CN205207431U (en) * | 2015-12-09 | 2016-05-04 | 南京磁谷科技有限公司 | Magnetic suspension bearing keeps apart rotor structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105333009A (en) | 2016-02-17 |
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Address after: No. 99, Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Cigu Technology Co., Ltd Address before: Nine No. 211102 Bamboo Road, Jiangning Development Zone, Nanjing, Jiangsu, 100 Patentee before: NANJING CIGU LIMITED Corp. |
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| CP03 | Change of name, title or address |