Heteropolarity permanent magnetism bias axial and radial magnetic bearings
A permanent magnet offset, axial-radial technology, applied in the directions of shafts and bearings, bearings, mechanical equipment, etc., can solve the problems of increasing the manufacturing cost of magnetic bearings, difficult installation, long overall length of magnetic bearings, etc., to achieve simplified structure, Easy installation and short flux path effect
Inactive Publication Date: 2009-04-22
NANJING COLLEGE OF CHEM TECH
View PDF0 Cites 11 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the existence of axial stator poles, the overall length of the magnetic bearing is longer, and the installation is difficult, which increases the manufacturing cost of the magnetic bearing
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:
[0018] like figure 1 As shown, the heteropolar permanent magnet bias axial radial magnetic bearing of the present invention includes a stator assembly and a rotor assembly, and the stator assembly includes a radial stator 1, wherein the radial stator 1 is eight magnetic poles arranged symmetrically in space Structure, four radial control windings 3 are set at intervals on the radial stator 1 magnetic pole, two radial control windings facing each other are connected in series, and the four permanent magnet poles embedded with sheet-shaped permanent magnets 2 are permanent magnet poles. The length is wider than the rotor core, and it is placed between the control poles to generate bias magnetic flux. The axial control winding 4 is a single winding and mounted under the radial stator poles. The rotor assembly includes a rotor 5 and a rotor core 6. The rot...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A heteropolar permanent magnet biased axial-radial magnetic bearing belongs to a hybrid magnetic bearing of magnetic bearings. A radial stator of the magnetic bearing is a symmetrically arranged eight-magnetic pole structure; the eight magnetic poles are respectively four control magnetic poles sheathed with control windings and four permanent magnetic poles for embedding sheet permanent magnets, and the permanent magnetic poles are arranged between the control magnetic poles. The magnetic bearing establishes static bias magnetic field by the permanent magnets, and forms a closed magnetic circuit by the permanent magnetic poles, a rotor core and the control magnetic poles; the permanent magnetic poles are wider than the rotor core, and are used for generating bias magnetic flux with an axial component, the axial control windings closely arranged below the radial stator generate control magnetic flux which is superimposed with the bias magnetic flux to control axial suspension, two opposite control windings on the control magnetic poles are connected in series to generate the control magnetic flux which is superimposed with the bias magnetic flux to realize radial two-degree-of-freedom suspension. The magnetic bearing realizes the purposes of compact structure, wide radial stator, low power consumption and convenient installation.
Description
technical field [0001] The heteropolar permanent magnetic bias axial radial magnetic bearing of the invention belongs to the technical field of hybrid magnetic bearings in magnetic bearings. Background technique [0002] Magnetic suspension bearing, also referred to as magnetic bearing for short, is a new type of high-performance bearing that uses the magnetic force between the stator and the rotor to suspend the rotor in space, so that there is no mechanical contact between the stator and the rotor. Because there is no mechanical contact between the stator and the rotor, the rotor of the magnetic suspension bearing can reach a high operating speed, and has the advantages of small mechanical wear, low energy consumption, long life, no lubrication, no pollution, etc., especially suitable for high speed , vacuum and ultra-clean and other special applications. [0003] At present, magnetic bearings are divided into the following types according to the way the magnetic force is...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F16C32/04
CPCF16C32/0465F16C32/0485
Inventor 赵旭升徐建中冯遵安
Owner NANJING COLLEGE OF CHEM TECH