CN105333009A - Magnetic suspension bearing isolation rotor structure - Google Patents
Magnetic suspension bearing isolation rotor structure Download PDFInfo
- Publication number
- CN105333009A CN105333009A CN201510903509.1A CN201510903509A CN105333009A CN 105333009 A CN105333009 A CN 105333009A CN 201510903509 A CN201510903509 A CN 201510903509A CN 105333009 A CN105333009 A CN 105333009A
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- China
- Prior art keywords
- rotor
- magnetic suspension
- sheath
- suspension bearing
- fluid container
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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 magnetic suspension bearing isolation rotor structure which comprises a base, magnetic suspension bearings, a rotor and a stator, wherein the magnetic suspension bearings and the stator are supported on the base, and the rotor is arranged in the magnetic suspension bearings and the stator in a penetrating manner. The magnetic suspension bearing isolation rotor structure further comprises a fluid container and a sheath, wherein the sheath is in a bucket-shaped structure with one end opened and the other end sealed; the sheath is arranged between the magnetic suspension bearings and the rotor and between the stator and the rotor in a penetrating manner; the open end of the sheath stretches out of the base and is connected with the fluid container; an inner cavity of the sheath is communicated with an inner cavity of the fluid container; and the left end of the rotor stretches into the inner cavity of the fluid container. The magnetic suspension bearing isolation rotor structure is good in sealing effect, long in service life and simple in structure; the sealed magnetic suspension bearing isolation rotor structure is free from limitation of the rotating speed and the linear surface speed of the rotor; except the rotor and the sheath, the other parts are free from the influence from a sealed fluid, and have no special requirements on structures and performances of used materials; and the magnetic suspension bearings require no lubrication.
Description
Technical field:
The present invention relates to a kind of magnetic suspension bearing isolation rotor structure, it belongs to magnetic levitation technology field.
Background technique:
Rotating machinery applies a very general class machinery, and its essential characteristic can be summarized as: be arranged on pedestal by one group of bearing by rotor, finished the work by the rotation of rotor.
Rotor in rotating machinery usually needs pedestal to penetrate, but in a lot of application, we need the sealing ensureing machinery, therefore need to install shaft seal between rotor and pedestal.Existing shaft seal can be divided into contact seal and noncontact seal two class.Contact seal, as seal with O ring, packing seal etc., has good sealing effect, but can not bear excessive linear resonance surface velocity.Existing noncontact seal, as oil sealing, labyrinth seal, carbon ring seal etc., although can bear larger linear resonance surface velocity, sealing effect is more very different than contact seal.Many times needing the quantity by increasing noncontact seal, increasing the sealing gland method such as (fluid-tight) and reduce leakage rate, thus complex structure, bulky.
Be contact seal or noncontact seal be all motive sealing, can not accomplish zero leakage, the contradiction between its sealing effect and life-span also cannot overcome.
But along with the requirement of modern industry to the rotating speed of rotating machinery, leakage rate, life-span and cost synchronously improves, the performance of conventional shaft seal has been difficult to meet the demands.So some rotating machinery abandons dynamic shaft seal, then carry out static sealing on pedestal.Because static sealing does not exist relative movement, therefore avoid the requirement to rotating speed and life-span, utilize very low cost just can accomplish zero leakage.
But adopt the static sealing of pedestal sealing configuration just to mean that the fluid by sealing can enter base interior, rotor, bearing and other component are all soaked in a fluid.This will affect the lubrication of bearing, affect the heat radiation of inner body, and causes fluid to the burn into corrosion of internal mechanical, the series of problems such as fire and explosive risks and electric leakage.Therefore pedestal sealing configuration can only be applicable to some special occasions, can not substitute shaft seal completely.
Therefore, necessary the deficiency solving prior art is improved to prior art.
Summary of the invention:
The present invention provides a kind of magnetic suspension bearing to isolate rotor structure to solve above-mentioned prior art Problems existing.
The technical solution adopted in the present invention has: a kind of magnetic suspension bearing isolation rotor structure, comprise pedestal, magnetic suspension bearing, rotor and stator, described magnetic suspension bearing and stator are supported on pedestal respectively, rotor is arranged in magnetic suspension bearing and stator, it also comprises fluid container and sheath, described sheath is one end open, the barrel-like structure that the other end is airtight, sheath is arranged between magnetic suspension bearing and rotor and between stators and rotators, the opening end of sheath stretches in outside pedestal and is connected with fluid container, and the inner chamber of the inner chamber of sheath and fluid container connects, the left end of rotor stretches in the inner chamber of fluid container.
Further, O RunddichtringO is provided with between described sheath and fluid container.
The present invention has following beneficial effect:
1) sealing effect of structure of the present invention is not by the rotating speed of rotor and the restriction of linear resonance surface velocity;
2) sealing of each parts in structure of the present invention is static sealing, and structure is simple, cost is low, the life-span is long, zero leakage;
3) except rotor and sheath, other parts are by being affected by fluid-encapsulated, to material therefor, stuctures and properties without particular/special requirement;
4) magnetic suspension bearing does not need lubrication, and structure is simple, the life-span is long.
Accompanying drawing illustrates:
Fig. 1 is structural drawing of the present invention.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 1, magnetic suspension bearing isolation rotor structure of the present invention, comprise pedestal 1, magnetic suspension bearing 2, rotor 3 and stator 6, magnetic suspension bearing 2 and stator 6 are all supported on pedestal 1, and rotor 3 is arranged in magnetic suspension bearing 2 and stator 6.Sheath 5 is provided with between rotor 3 and magnetic suspension bearing 2 and stator 6, this sheath 5 is one end open, the barrel-like structure that the other end is airtight, the left side opening end of sheath 5 stretches in outside pedestal 1 and fluid container 4 is tightly connected, and the inner chamber of the inner chamber of sheath 5 and fluid container 4 connects, the left end of rotor 3 stretches in the inner chamber of fluid container 4.
Adopt static sealing between sheath 5 in the present invention and fluid container 4, this static sealing structure is O RunddichtringO 7 or filler.
The feature of magnetic suspension bearing isolation rotor structure of the present invention is:
1) rotor 3 is wrapped in sheath 5, and is supported by magnetic suspension bearing 2, and rotor 3 does not contact with pedestal 1, does not rub so do not need lubrication due to magnetic suspension bearing 2, does not also have rotating speed and life-span restriction.
2) sheath 5 is seal containers of an one end open, opening end be filled with fluid-encapsulated fluid container 4 and be connected, and rotor 3 and pedestal 1 to be separated, the fluid-encapsulated gap being full of rotor 1 and sheath 5.
3) sheath 5 adopts static sealing with the joint of fluid container 4, and pedestal 1 does not need sealing, and the structure of static sealing is simple, cost is low, the life-span is long, and is easy to accomplish zero leakage.
4) in pedestal 1, other parts do not contact with fluid-encapsulated, can not be subject to fluids.As long as therefore sheath 1 and rotor 3 shell select the material that can tolerate this fluids just can ensure safety, without the need to carrying out special processing to the material of other component in pedestal 1.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make some improvement under the premise without departing from the principles of the invention, and these improvement also should be considered as protection scope of the present invention.
Claims (2)
1. a magnetic suspension bearing isolation rotor structure, comprise pedestal (1), magnetic suspension bearing (2), rotor (3) and stator (6), described magnetic suspension bearing (2) and stator (6) are supported on pedestal (1) respectively, rotor (3) is arranged in magnetic suspension bearing (2) and stator (6), it is characterized in that: also comprise fluid container (4) and sheath (5), described sheath (5) is one end open, the barrel-like structure that the other end is airtight, sheath (5) is arranged between magnetic suspension bearing (2) and rotor (3) and between stator (6) and rotor (3), the opening end of sheath (5) stretches in pedestal (1) and is connected with fluid container (4) outward, and the inner chamber of the inner chamber of sheath (5) and fluid container (4) connects, the left end of rotor (3) stretches in the inner chamber of fluid container (4).
2. magnetic suspension bearing isolation rotor structure as claimed in claim 1, is characterized in that: described sheath (5) and fluid container (4) are provided with O RunddichtringO (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 true CN105333009A (en) | 2016-02-17 |
| CN105333009B CN105333009B (en) | 2018-04-06 |
Family
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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 |
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| CN (1) | CN105333009B (en) |
Citations (8)
| 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 |
| JP2001254693A (en) * | 2000-03-09 | 2001-09-21 | Tokyo Buhin Kogyo Co Ltd | Magnetic levitation type seal-less 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 |
-
2015
- 2015-12-09 CN CN201510903509.1A patent/CN105333009B/en active Active
Patent Citations (8)
| 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 |
| JP2001254693A (en) * | 2000-03-09 | 2001-09-21 | Tokyo Buhin Kogyo Co Ltd | Magnetic levitation type seal-less 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 |
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| Publication number | Publication date |
|---|---|
| CN105333009B (en) | 2018-04-06 |
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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. |