CN202550734U - Magnetism isolating structure of megawatt-level half-direct drive permanent magnet motor - Google Patents
Magnetism isolating structure of megawatt-level half-direct drive permanent magnet motor Download PDFInfo
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- CN202550734U CN202550734U CN2012201057395U CN201220105739U CN202550734U CN 202550734 U CN202550734 U CN 202550734U CN 2012201057395 U CN2012201057395 U CN 2012201057395U CN 201220105739 U CN201220105739 U CN 201220105739U CN 202550734 U CN202550734 U CN 202550734U
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- magnet
- magnet steel
- magnetic steel
- magnetism isolating
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Abstract
The utility model provides a magnetism isolating structure of a megawatt-level half-direct drive permanent magnet motor. The magnetism isolating structure comprises a rotor iron core, wherein magnetic steel channels are punched at the periphery of the rotor iron core; two ends of each of the magnetic steel channels are connected with magnetism isolating channels; magnetic steel and magnetism isolating channel filling materials are respectively placed into the magnetic steel channels and the magnetism isolating channels; two pieces of magnetic steel are placed in each of the magnetic steel channels; and a magnetism isolating member is filled between two pieces of magnetic steel. By the magnetism isolating structure, the problem that the magnetic steel is loosened because of the radial assembly gap in the channels or the magnetic steel is damaged because the magnetic steel is radially rigidly pressed tightly can be solved, and the sealing is fully realized to prevent the corrosion of the magnetic steel caused by an air gap.
Description
Technical field
The utility model relates to the rotor of high-power permanent magnet motor field, is specifically related to the magnetic shielding structure that a kind of megawatt semi-direct drives permanent magnet machine rotor.
Background technology
Traditional megawatt-level permanent magnet rotor is generally direct-drive permanent-magnetism type or high-speed permanent magnetic type.Large-scale direct-drive permanent-magnetism rotor is because its structure is huge, the rare-earth permanent magnet consumption is big, manufacture difficulty is high, production has high input, hard transportation; Especially rare-earth permanent magnet resource-constrained and price rapid growth; Big limitations the great development of direct-drive permanent-magnetism motor, even a lot of enterprise has to consider remodeling.Powerful high-speed permanent magnetic synchronous motor rotor; Because root diameter is big, rotor is high; Reach 2000rpm, even higher rotating speed, condition lower rotor part magnet steel produces huge centrifugal force like this; Bear such centrifugal force and just bring great obstruction, and reliability is difficult to guarantee to the fastening structure design of rotor core design and magnet steel.
The half directly-drive permanent magnet motor since avoided direct-drive permanent-magnetism type or high-speed permanent magnetic type rotor manufacture and design with cost on a difficult problem, market has preferably appearred, will become a desirable type.Therefore the rotor of half directly-drive permanent magnet motor more need be sought the design of mechanical strength height, dependable performance.
The utility model content
The purpose of the utility model is to provide a kind of megawatt semi-direct to drive the magnetic shielding structure of permanent magnet machine rotor, the difficult problem on avoiding direct-drive permanent-magnetism type or high-speed permanent magnetic type motor manufacturing cost and designing,
The technical scheme of the utility model is following:
A kind of megawatt semi-direct drives the magnetic shielding structure of permanent magnet machine rotor; Comprise rotor core; Punching out has the magnet steel groove on the circumference of said rotor core, and the two ends of each magnet steel groove are connected with magnet isolation tank, and magnet steel, magnet isolation tank inserts place respectively in said magnet steel groove, the magnet isolation tank; Be placed with two magnet steel in each magnet steel groove, be filled with between said two magnet steel at a distance from magnetic spare.
Its further technical scheme is: said thickness at a distance from magnetic spare is 0.1 ~ 1mm, and said height at a distance from magnetic spare equates with the thickness of magnet steel.
Its further technical scheme is: said material at a distance from magnetic spare is the thermal expansivity glass felt, and the gap between magnet steel and the magnet steel groove was filled up in expansion after it absorbed epoxy resin, and was bonded to one with magnet steel and magnet steel groove.
Its further technical scheme is: the material of said magnet isolation tank inserts is the elastic bulk glass fiber, and magnet isolation tank was filled up in expansion after it absorbed epoxy resin, and was bonded to one with magnet steel and magnet isolation tank.
The useful technique effect of the utility model is:
The utility model is through the design to the inserts in magnetic spare, magnet isolation tank and magnet isolation tank; Solved magnet steel in groove radially the loosening problem or the radial rigidity that cause of fit-up gap compress the magnet steel damaging problem that too tightly causes; And fully realize sealing, prevent that the existence of air-gap from causing the magnet steel corrosion.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of unfilled rotor core.
Embodiment
Further specify below in conjunction with the embodiment of accompanying drawing the utility model.
As shown in Figure 2, the utility model comprises rotor core 1, and punching out has a plurality of magnet steel grooves 5 on the circumference of rotor core 1, and the two ends of each magnet steel groove 5 respectively are connected with a magnet isolation tank 6.As shown in Figure 1, magnet steel 2, magnet isolation tank inserts 4 place respectively in magnet steel groove 5, the magnet isolation tank 6.Be placed with in each magnet steel groove 5 and be filled with between 2, two magnet steel 2 of two magnet steel at a distance from magnetic spare 3.
Thickness at a distance from magnetic spare 3 is 0.1 ~ 1mm, and height is identical with the thickness of every block of magnet steel 2, and it separates two blocks of magnet steel 2 of same axial location in every utmost point magnet steel groove 5.Magnet isolation tank inserts 4 is after the magnet steel 2 of every utmost point all inserts; Insert in the magnet isolation tank 6 of this utmost point; After axial restraint is carried out through magnet steel end hold down gag in magnetic spare 3, magnet isolation tank inserts 4 two ends; Absorb epoxies at a distance from magnetic spare 3 with magnet isolation tank inserts 4 behind the vacuum encapsulation epoxy resin and expand and baking and curing, the gap in the filling slot also is bonded to firm integral body with magnet steel 2 and core stamping, prevents that the loosening or air-gap of magnet steel 2 from existing.
Separated magnetic spare 3 in every utmost point magnet steel groove 5 adopts the thermal expansivity glass felt, and it is full to expand behind this glass felt absorption epoxy resin, fills up the gap between magnet steel 2 and the magnet steel groove 5, and is bonded to one.Magnet isolation tank inserts 4 adopts the elastic bulk glass fiber material, and fluffy softness is prone to fill, at rotor overall vacuum epoxy resin-impregnated lacquer and after solidifying; It fully inhales lacquer expansion resilience, and rebound degree can reach 80%, can guarantee fully closely to fill up in the magnet isolation tank 6 of irregular geometrical cross-sectional shape and does not leave gap and cavity; Be bonded to one with magnet steel 2 and magnet isolation tank 6, intensity is big, and hardness is suitable with magnet steel 2; And toughness is big, can guarantee still when expanding with heat and contract with cold that magnet steel 2 is fixed not loosening.
Above-described only is the preferred implementation of the utility model, and the utility model is not limited to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite of the basic design that does not break away from the utility model, all should think to be included within the protection range of the utility model.
Claims (4)
1. a megawatt semi-direct drives the magnetic shielding structure of permanent magnet machine rotor; It is characterized in that: comprise rotor core (1); Punching out has magnet steel groove (5) on the circumference of said rotor core (1); The two ends of each magnet steel groove (5) are connected with magnet isolation tank (6), and magnet steel (2), magnet isolation tank inserts (4) place respectively in said magnet steel groove (5), the magnet isolation tank (6); Be placed with two magnet steel (2) in each magnet steel groove (5), be filled with between said two magnet steel (2) at a distance from magnetic spare (3).
2. drive the magnetic shielding structure of permanent magnet machine rotor according to the said megawatt semi-direct of claim 1, it is characterized in that: said thickness at a distance from magnetic spare (3) is 0.1 ~ 1mm, and said height at a distance from magnetic spare (3) equates with the thickness of magnet steel (2).
3. drive the magnetic shielding structure of permanent magnet machine rotor according to the said megawatt semi-direct of claim 1; It is characterized in that: said material at a distance from magnetic spare (3) is the thermal expansivity glass felt; The gap between magnet steel (2) and the magnet steel groove (5) was filled up in expansion after it absorbed epoxy resin, and was bonded to one with magnet steel (2) and magnet steel groove (5).
4. drive the magnetic shielding structure of permanent magnet machine rotor according to the said megawatt semi-direct of claim 1; It is characterized in that: the material of said magnet isolation tank inserts (4) is the elastic bulk glass fiber; Magnet isolation tank (6) was filled up in expansion after it absorbed epoxy resin, and was bonded to one with magnet steel (2) and magnet isolation tank (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201057395U CN202550734U (en) | 2012-03-20 | 2012-03-20 | Magnetism isolating structure of megawatt-level half-direct drive permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201057395U CN202550734U (en) | 2012-03-20 | 2012-03-20 | Magnetism isolating structure of megawatt-level half-direct drive permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202550734U true CN202550734U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201057395U Expired - Lifetime CN202550734U (en) | 2012-03-20 | 2012-03-20 | Magnetism isolating structure of megawatt-level half-direct drive permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202550734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611227A (en) * | 2012-03-20 | 2012-07-25 | 中科盛创（青岛）电气有限公司 | Magnetic isolation structure of megawatt-level half-direct-drive permanent magnet motor rotor |
-
2012
- 2012-03-20 CN CN2012201057395U patent/CN202550734U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611227A (en) * | 2012-03-20 | 2012-07-25 | 中科盛创（青岛）电气有限公司 | Magnetic isolation structure of megawatt-level half-direct-drive permanent magnet motor rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 266071 Shandong province Qingdao Xinye High-tech Industrial Development Zone of Qingdao Road No. 18 Patentee after: Zhongke Sheng Chuang (Qingdao) electric Limited by Share Ltd Address before: 266071 318-59, Pioneer Center, hi tech Industrial Development Zone, Shandong, Qingdao, Qingdao Patentee before: Zhongke Sheng Chuang (Qingdao) Electric Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |
|
| CX01 | Expiry of patent term |