CN108006069A - A kind of magnetic suspension bearing rotor and magnetic suspension rotor system - Google Patents
A kind of magnetic suspension bearing rotor and magnetic suspension rotor system Download PDFInfo
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- CN108006069A CN108006069A CN201711463075.3A CN201711463075A CN108006069A CN 108006069 A CN108006069 A CN 108006069A CN 201711463075 A CN201711463075 A CN 201711463075A CN 108006069 A CN108006069 A CN 108006069A
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- 239000000725 suspension Substances 0.000 title claims abstract description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000012774 insulation material Substances 0.000 claims 1
- 238000000608 laser ablation Methods 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000005339 levitation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 3
- 238000010329 laser etching Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000009467 reduction Effects 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
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
- F16C32/0461—Details of the magnetic circuit of stationary parts of the magnetic circuit
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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
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
- F16C32/0468—Details of the magnetic circuit of moving parts of the magnetic circuit, e.g. of the rotor
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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
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0476—Active magnetic bearings for rotary movement with active support of one degree of freedom, e.g. axial magnetic bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
本发明涉及磁悬浮技术领域，尤其涉及一种磁悬浮轴承转子以及磁悬浮转子系统。磁悬浮轴承转子包括整体式导磁环，沿所述导磁环的轴向所述导磁环上间隔设置有多个环状凹槽，所述环状凹槽的开口均朝向所述导磁环的外侧。本发明提供的磁悬浮轴承转子导磁环采用整体式结构，并且导磁环上设置了开口朝向外侧的环状凹槽，既解决了现有的磁悬浮轴承转子采用完整金属环导致的涡流问题，也解决了现有的磁悬浮轴承转子采用叠片组装式结构难以适用高速运转的环境的问题，加工装配简单。导磁环由于结构强度高，可以与转轴采取较大的过盈配合量，使得导磁环与转轴连接较为可靠，以使用高速运转的环境。
The invention relates to the technical field of magnetic suspension, in particular to a magnetic suspension bearing rotor and a magnetic suspension rotor system. The magnetic suspension bearing rotor includes an integral magnetic conduction ring, and a plurality of annular grooves are arranged at intervals along the axial direction of the magnetic conduction ring, and the openings of the annular grooves all face the magnetic conduction ring outside. The magnetic bearing rotor magnetic conduction ring provided by the present invention adopts an integral structure, and the magnetic conduction ring is provided with an annular groove with an opening facing the outside, which not only solves the eddy current problem caused by the use of a complete metal ring in the existing magnetic suspension bearing rotor, but also It solves the problem that the existing magnetic suspension bearing rotor adopts the laminated sheet assembly structure and is difficult to adapt to the environment of high-speed operation, and the processing and assembly are simple. Due to the high structural strength of the magnetic ring, it can adopt a larger interference fit with the rotating shaft, so that the connection between the magnetic ring and the rotating shaft is more reliable, and it can be used in a high-speed operating environment.
Description
技术领域technical field
本发明涉及磁悬浮技术领域，尤其涉及一种磁悬浮轴承转子以及磁悬浮转子系统。The invention relates to the technical field of magnetic suspension, in particular to a magnetic suspension bearing rotor and a magnetic suspension rotor system.
背景技术Background technique
磁轴承转子在高速旋转时会产生涡流损耗，为了减小涡流损耗，传统的办法是采用硅钢片叠制形成磁轴承转子。一方面硅钢片制备工艺复杂；另一方面硅钢片铁芯与转子轴之间的配合无法实现有效的过盈配合，这样在超高转速下，铁芯与转子轴配合的紧密程度会破坏，此易导致设备运转过程中结构连接的松动，且硅钢片之间的粘接若产生松动造成设备运转时明显的振动和较大的噪声。并且，由于硅钢片工艺限制了硅钢片的成型厚度，硅钢片铁芯的制备无法实现小型化。The magnetic bearing rotor will generate eddy current loss when it rotates at high speed. In order to reduce the eddy current loss, the traditional method is to form the magnetic bearing rotor by stacking silicon steel sheets. On the one hand, the preparation process of the silicon steel sheet is complicated; on the other hand, the cooperation between the silicon steel sheet iron core and the rotor shaft cannot achieve an effective interference fit, so that at ultra-high speeds, the tightness of the iron core and the rotor shaft will be destroyed. It is easy to cause the loosening of the structural connection during the operation of the equipment, and if the bonding between the silicon steel sheets becomes loose, it will cause obvious vibration and loud noise during the operation of the equipment. Moreover, since the silicon steel sheet process limits the forming thickness of the silicon steel sheet, the preparation of the silicon steel sheet iron core cannot be miniaturized.
综上所述，硅钢片磁轴承转子铁芯无法适应，超高转速、小型化需求。To sum up, the silicon steel sheet magnetic bearing rotor core cannot meet the requirements of ultra-high speed and miniaturization.
发明内容Contents of the invention
(一)要解决的技术问题(1) Technical problems to be solved
本发明要解决的技术问题是解决现有技术中磁轴承转子制备工艺复杂，现有的硅钢片叠制转子无法适用于高速环境下的问题。The technical problem to be solved by the present invention is to solve the problems in the prior art that the preparation process of the magnetic bearing rotor is complicated and the existing rotor made of silicon steel sheets cannot be applied in a high-speed environment.
(二)技术方案(2) Technical solution
为了解决上述技术问题，本发明提供了一种磁悬浮轴承转子，包括整体式导磁环，沿所述导磁环的轴向所述导磁环上间隔设置有多个环状凹槽，所述环状凹槽的开口均朝向所述导磁环的外侧。In order to solve the above technical problems, the present invention provides a magnetic suspension bearing rotor, which includes an integral magnetic conduction ring, and a plurality of annular grooves are arranged on the magnetic conduction ring at intervals along the axial direction of the magnetic conduction ring. The openings of the annular grooves all face the outside of the magnetic conduction ring.
根据本发明，所述环状凹槽的深度为所述导磁环径向厚度的1/2～1/5。According to the present invention, the depth of the annular groove is 1/2˜1/5 of the radial thickness of the magnetic permeable ring.
根据本发明，所述环状凹槽内填充有绝缘材料。According to the present invention, the annular groove is filled with insulating material.
根据本发明，相邻两个所述环状凹槽之间的最小间距为0.2～0.5mm。According to the present invention, the minimum distance between two adjacent annular grooves is 0.2-0.5 mm.
根据本发明，所述环状凹槽的宽度为4～20μm。According to the present invention, the width of the annular groove is 4-20 μm.
根据本发明，所述环状凹槽通过激光刻蚀工艺成型。According to the present invention, the annular groove is shaped by a laser etching process.
根据本发明，所述导磁环的材料为导磁合金钢或工业纯铁。According to the present invention, the material of the magnetically permeable ring is magnetically permeable alloy steel or industrial pure iron.
本发明还提供了一种磁悬浮转子系统，包括转轴以及上述的磁悬浮轴承转子，所述磁悬浮轴承转子套设在所述转轴的外侧，所述转轴与所述磁悬浮轴承转子过盈配合。The present invention also provides a magnetic suspension rotor system, including a rotating shaft and the above-mentioned magnetic suspension bearing rotor, the magnetic suspension bearing rotor is sleeved on the outside of the rotation shaft, and the rotation shaft is in interference fit with the magnetic suspension bearing rotor.
(三)有益效果(3) Beneficial effects
本发明的上述技术方案与现有技术相比具有如下优点：本实施例提供的磁悬浮轴承转子导磁环采用整体式结构，并且导磁环上设置了开口朝向外侧的环状凹槽，既解决了现有的磁悬浮轴承转子采用完整金属环导致的涡流问题，也解决了现有的磁悬浮轴承转子采用叠片组装式结构难以适用高速运转的环境的问题，加工装配简单。本实施例中的导磁环由于结构强度高，可以与转轴采取较大的过盈配合量，使得导磁环与转轴连接较为可靠，以使用高速运转的环境。Compared with the prior art, the above-mentioned technical solution of the present invention has the following advantages: the magnetic suspension bearing rotor magnetic conduction ring provided by this embodiment adopts an integral structure, and the magnetic conduction ring is provided with an annular groove with an opening facing the outside, which not only solves the problem of It solves the eddy current problem caused by the use of a complete metal ring in the existing magnetic suspension bearing rotor, and also solves the problem that the existing magnetic suspension bearing rotor adopts a laminated assembly structure that is difficult to apply to the environment of high-speed operation, and the processing and assembly are simple. Due to the high structural strength of the magnetic ring in this embodiment, a large interference fit with the rotating shaft can be adopted, so that the connection between the magnetic ring and the rotating shaft is more reliable, and it can be used in a high-speed operating environment.
附图说明Description of drawings
图1是本发明实施例提供的磁悬浮轴承转子的剖视图；Fig. 1 is a sectional view of a magnetic suspension bearing rotor provided by an embodiment of the present invention;
图2是本发明实施例提供的带有磁悬浮轴承的磁悬浮转子系统的结构实体图；Fig. 2 is a structural entity diagram of a magnetic levitation rotor system with a magnetic levitation bearing provided by an embodiment of the present invention;
图3是图2中A处的放大图。Fig. 3 is an enlarged view of A in Fig. 2 .
图中：1：导磁环；2：环状凹槽；3：转轴。In the figure: 1: magnetic conduction ring; 2: annular groove; 3: rotating shaft.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
如图1所示，本发明实施例提供的一种磁悬浮轴承转子，包括整体式导磁环1，沿所述导磁环1的轴向所述导磁环1上间隔设置有多个环状凹槽2，所述环状凹槽2的开口均朝向所述导磁环1的外侧。本实施例提供的磁悬浮轴承转子导磁环1采用整体式结构，并且导磁环1上设置了开口朝向外侧的环状凹槽2，既解决了现有的磁悬浮轴承转子采用完整金属环导致的涡流问题，也解决了现有的磁悬浮轴承转子采用叠片组装式结构难以适用高速运转的环境的问题，加工装配简单。本实施例中的导磁环1由于结构强度高，可以与转轴采取较大的过盈配合量，使得导磁环1与转轴连接较为可靠，以使用高速运转的环境。As shown in Figure 1, a magnetic suspension bearing rotor provided by an embodiment of the present invention includes an integral magnetic conduction ring 1, and a plurality of annular rings are arranged at intervals along the axial direction of the magnetic conduction ring 1. Groove 2 , the openings of the annular groove 2 are all facing the outside of the magnetic permeable ring 1 . The magnetic bearing rotor magnetic ring 1 provided in this embodiment adopts an integral structure, and the magnetic ring 1 is provided with an annular groove 2 with an opening facing the outside, which not only solves the problem caused by the use of a complete metal ring in the existing magnetic suspension bearing rotor The eddy current problem also solves the problem that the existing magnetic suspension bearing rotor adopts the laminated assembly structure and is difficult to adapt to the high-speed operation environment, and the processing and assembly are simple. Due to the high structural strength of the magnetic ring 1 in this embodiment, a larger interference fit with the rotating shaft can be adopted, so that the connection between the magnetic ring 1 and the rotating shaft is more reliable, and it can be used in a high-speed operating environment.
优选地，本实施例中所述环状凹槽2的深度为所述导磁环1径向厚度的1/2～1/5。由于涡流损耗主要集中才材料表面，所以较小的刻蚀深度就可以有效减小涡流，因此，将环状凹槽2的深度设置为所述导磁环1径向厚度的1/2～1/5，既可以保证减小涡流，又可以保证导磁环1的结构强度。Preferably, the depth of the annular groove 2 in this embodiment is 1/2˜1/5 of the radial thickness of the magnetic permeable ring 1 . Since the eddy current loss is mainly concentrated on the surface of the material, a small etching depth can effectively reduce the eddy current. Therefore, the depth of the annular groove 2 is set to 1/2 to 1 of the radial thickness of the magnetic permeable ring 1 /5, which can not only ensure the reduction of eddy current, but also ensure the structural strength of the magnetic permeable ring 1 .
优选地，本实施例中所述环状凹槽2内填充有绝缘材料。在环形凹槽内填充绝缘材料，避免中受到挤压力时环状凹槽2两侧会接触，影响降低涡流的效果。Preferably, the annular groove 2 in this embodiment is filled with insulating material. The insulating material is filled in the annular groove to avoid contact between both sides of the annular groove 2 when the center is squeezed, which affects the effect of reducing eddy current.
优选地，本实施例中相邻两个所述环状凹槽2之间的最小间距a为0.2～0.5mm。相邻两个所述环状凹槽2之间的最小间距即相邻两个所述环状凹槽2之间形成的片状物的厚度，片状物的厚度不宜过小，避免片状物的结构强度过低，高速环境下产生断裂。优选地，本实施例中所述环状凹槽2的宽度b为4～20μm。环状凹槽2设置较小的宽度可以保证导磁环切槽后的表面积相较于未切槽的导磁环表面积降低较小，不影响磁轴承的出力。优选地，本实施例中所述环状凹槽2通过激光刻蚀工艺成型。激光刻蚀工艺加工精度高，误差小，能够满足小尺寸导磁环1的加工需求。设置较小尺寸的导磁环有利于实现磁悬浮轴承的小型化，进一步有利于磁悬浮轴承在小型家用电器上的使用。Preferably, the minimum distance a between two adjacent annular grooves 2 in this embodiment is 0.2-0.5 mm. The minimum distance between two adjacent annular grooves 2 is the thickness of the sheet formed between the adjacent two annular grooves 2, the thickness of the sheet should not be too small to avoid sheet The structural strength of the object is too low, and it will break under high-speed environment. Preferably, the width b of the annular groove 2 in this embodiment is 4-20 μm. The smaller width of the annular groove 2 can ensure that the surface area of the grooved magnetic ring is smaller than that of the non-grooved magnetic ring, which does not affect the output of the magnetic bearing. Preferably, the annular groove 2 in this embodiment is formed by a laser etching process. The laser etching process has high processing precision and small error, and can meet the processing requirements of the small-sized magnetic permeable ring 1 . Setting the magnetically conductive ring with a smaller size is beneficial to realize the miniaturization of the magnetic suspension bearing, and further facilitates the use of the magnetic suspension bearing in small household appliances.
优选地，本实施例中所述导磁环1的材料为导磁合金钢或工业纯铁。具有较好的导磁能力以及结构强度的材料均可用作导磁环。Preferably, the material of the magnetic permeable ring 1 in this embodiment is magnetic permeable alloy steel or industrial pure iron. Materials with better magnetic permeability and structural strength can be used as the magnetic permeability ring.
如图2和图3所示，本发明实施例还提供了一种磁悬浮转子系统，包括转轴3以及上述的磁悬浮轴承转子，所述磁悬浮轴承转子套设在所述转轴3的外侧，所述转轴3与所述磁悬浮轴承转子过盈配合。采用上述的磁悬浮轴承转子使得磁悬浮转子系统加工装配简单，过盈配合连接可靠，能够适用于高速运转的环形。As shown in Figure 2 and Figure 3, the embodiment of the present invention also provides a magnetic levitation rotor system, including a rotating shaft 3 and the above-mentioned magnetic levitation bearing rotor, the magnetic levitation bearing rotor is sleeved on the outside of the rotating shaft 3, and the rotating shaft 3. Interference fit with the magnetic suspension bearing rotor. The adoption of the above-mentioned magnetic suspension bearing rotor makes the processing and assembly of the magnetic suspension rotor system simple, the interference fit connection is reliable, and it can be applied to high-speed rotating rings.
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims (8)
- A kind of 1. magnetic suspension bearing rotor, it is characterised in that：Including monoblock type magnetic guiding loop, along being led described in the axial direction of the magnetic guiding loop Multiple annular recess are arranged at intervals with magnet ring, the opening of the annular recess is towards the outside of the magnetic guiding loop.
- 2. magnetic suspension bearing rotor according to claim 1, it is characterised in that：The depth of the annular recess is led to be described The 1/2~1/5 of magnet ring radial thickness.
- 3. magnetic suspension bearing rotor according to claim 1, it is characterised in that：Insulation material is filled with the annular recess Material.
- 4. magnetic suspension bearing rotor according to claim 1, it is characterised in that：Between the two neighboring annular recess Minimum spacing is 0.2~0.5mm.
- 5. magnetic suspension bearing rotor according to claim 1, it is characterised in that：The width of the annular recess is 4~20 μ m。
- 6. magnetic suspension bearing rotor according to claim 1, it is characterised in that：The annular recess passes through laser ablation work Skill is molded.
- 7. magnetic suspension bearing rotor according to claim 1, it is characterised in that：The material of the magnetic guiding loop is permeability alloys Steel or ingot iron.
- A kind of 8. magnetic suspension rotor system, it is characterised in that：Including shaft and such as claim 1-7 any one of them magnetcisuspensions Floating bearing rotor, the magnetic suspension bearing rotor are set in the outside of the shaft, and the shaft is forwarded with the magnetic suspension shaft Son interference fit.
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| CN201711463075.3A CN108006069A (en) | 2017-12-28 | 2017-12-28 | A kind of magnetic suspension bearing rotor and magnetic suspension rotor system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| US20010017877A1 (en) * | 2000-02-21 | 2001-08-30 | Ebara Corporation | Magnetic bearing and circulation fan apparatus |
| CN101761454A (en) * | 2009-10-30 | 2010-06-30 | 北京航空航天大学 | Vertical shaft maglev wind power generator |
| US20130293051A1 (en) * | 2010-12-23 | 2013-11-07 | Siemens Aktiengesellschaft | Radial magnetic bearing for magnetic support of a rotor |
| CN102434587A (en) * | 2011-09-19 | 2012-05-02 | 北京航空航天大学 | Permanent magnet passive type axial magnetic suspension bearing with passive damping effect |
| CN102518664A (en) * | 2011-12-07 | 2012-06-27 | 清华大学 | Device used for reducing ring vortex of axial electromagnetic bearing |
| US20150233421A1 (en) * | 2011-12-19 | 2015-08-20 | Siemens Aktiengesellschaft | Magnetic radial bearing with a rotor laminated in a star-shaped manner |
| CN207961272U (en) * | 2017-12-28 | 2018-10-12 | 苏州麦格奈迪磁悬浮技术有限公司 | A kind of magnetic suspension bearing rotor and magnetic suspension rotor system |
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Effective date of registration: 20200703 Address after: 100095 Unit 301-B146, Building 17, No. 3 Gaolizhang Road, Haidian District, Beijing Applicant after: Beijing Kuntengmig Technology Co.,Ltd. Address before: 215151 Room 203, 2 building, 148 business building, 148 Hwang Road, Jiangsu hi tech Zone. Applicant before: SUZHOU MAIGE NAIDI MAGNETIC SUSPENSION TECHNOLOGY Co.,Ltd. |
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Application publication date: 20180508 |