CN2392297Y - Paramagnetic magnetic conducting slot wedge used for electric motor - Google Patents
Paramagnetic magnetic conducting slot wedge used for electric motor Download PDFInfo
- Publication number
- CN2392297Y CN2392297Y CN 99239286 CN99239286U CN2392297Y CN 2392297 Y CN2392297 Y CN 2392297Y CN 99239286 CN99239286 CN 99239286 CN 99239286 U CN99239286 U CN 99239286U CN 2392297 Y CN2392297 Y CN 2392297Y
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- slot wedge
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Abstract
The utility model discloses a paramagnetic magnetic conducting slot wedge for an electric motor. The utility model is characterized in that the slot wedge is composed of a plurality of small punching sheets which are overlaid in a longitudinal way, and is provided with longitudinal insulating fasteners. The magnetic conducting direction of the utility model is the same as the magnetic conducting direction of a silicon steel plate which is arranged in an iron core of the motor. The utility model has the advantages that the magnetic resistance is small, the magnetic conductivity is high, the noise and the warming of the motor are lowered, the power factor and the efficiency of the motor are improved, and the quality of the motor is improved.
Description
The utility model relates to the fitment material of motor, specifically is used for a kind of paramagnetic guide magnetic slot-wedge of motor.
At present, the slot wedge that uses on the motor is generally all used non-magnetic common epoxy resin bonded fiber manufacturing, and comparatively advanced motor adopts magnetic slot-seal.The magnetic slot-seal of each factory's manufacturing has following four kinds at present:
1, on the epoxy fibreglass adhesive plaster and wire netting laminate at interval bake pressure be solidified into big open sheet material after, cut again and be processed into the wedge shape slot wedge into strips, be inlaid into electric machine iron core notch (see figure 1) at last, play fixed electrical machinery coil and certain magnetic conduction effect;
2, sandwich between carcass on the epoxy fibreglass iron powder laminate bake pressure be solidified into big open sheet material after, cut again and be processed into the wedge shape slot wedge into strips, be inlaid into electric machine iron core notch (see figure 2) at last, play fixed electrical machinery coil and certain magnetic conduction effect;
3, admixing iron powder in the epoxy resin, directly to apply in the surperficial wedge-shaped slot behind the motor rule baking hard, promptly plays the slot wedge (see figure 3) of fixed electrical machinery coil, also played certain magnetic conduction effect;
4, bunchy insulation thin wire and electric machine iron core groove in the same way boundling become after the required notch wedge shape again circle to wrap on the glass fiber adhesive plaster bake pressure to become and block into required slot wedge after rectangular, be inlaid into the electric machine iron core notch at last, playing fixed electrical machinery coil and certain magnetic conduction effect, is a kind of magnetic slot-seal from external introduction.
During motor rotation, the magnetic line of force flows in the motor, is that vertical current is crossed the permeability magnetic material (see figure 1) in the slot wedge the 1st, in 4 kind of slot wedge, because permeability magnetic material (iron-holder) is less in these two kinds of slot wedges, magnetic resistance is big, and effect is undesirable; Because permeability magnetic material (iron powder) becomes graininess, when density was difficult to improve the magnetic line of force and flows through slot wedge, so magneto resistive ratio the 1st, 4 kind bigger was effect more undesirable (seeing Fig. 2, Fig. 3) the 2nd, in 3 kind of slot wedge; According to specification requirement, electric machine iron core all has tooth, groove, in the motor coil embedded groove.When motor rotation, deviate from the groove because of effects such as electromagnetic force and centrifugal force in order not make coil, all motors all fix coil at notch with slot wedge, because tooth, groove effect, the magnetic conduction ability of motor in rotating air gap greatly weakens, thereby produced the magnetic pulsating when motor rotation, noise, vibration, problems such as exciting current is big, power factor (PF) is low, loss is big, efficient is low, temperature rise height.Greatly reduce the technical-economic index of motor, thus the electric machine designer have to increase motor with copper and satisfy the requirement of motor performance with the iron amount.In order to address the above problem, all electric machine designers reduce the influence to motor performance of motor tooth, groove unexceptionally by every means, the small design low voltage motor, when the electric machine designer designs the electric machine iron core punching, employing remain silent groove or semi-enclosed slot can reduce tooth, the groove adverse effect to motor performance.But large and medium-sized motor is because capacity motor increases, and motor coil is all made the coil of solid shape, so the designer is designed to open slot unlimitedly to the electric machine iron core punching, is beneficial to the embedding of motor coil.In order to improve motor properties, have only the import department after the coil embedding is inlaid into the permeability height, the slot wedge of fixed coil is optimal method reliably.
The purpose of this utility model is to provide a kind of magnetic resistance little, the high paramagnetic of permeability to the magnetic conduction slot wedge.
The technical solution of the utility model is achieved in that the paramagnetic guide magnetic slot-wedge that is used for motor, it mainly comprises insulating barrier and the slot wedge that is included in the insulating barrier, it is characterized in that: described slot wedge is made up of some little punchings that vertically laminate, and is provided with vertical insulation securing member.
The utility model compared with prior art has the following advantages:
1, the slot wedge material is a motor with high magnetic conduction low-loss cold-rolled silicon iron, and is identical with material with electric machine iron core, after the little punching of punching out wedgewise, laminates into strips again, be used in electric machine iron core after, its magnetic conduction direction is identical with the magnetic conduction direction of silicon steel plate in the electric machine iron core.So magnetic resistance is little, the permeability height, thus can reduce the exciting current of motor, can solve motor simultaneously because of the magnetic pulsating phenomenon that tooth, groove influence produce, reduced unfavorable factors such as the noise of motor and vibration;
2, this slot wedge is to be made by the thin silicon steel plate, and each wedged plate two sides all has been coated with silicon steel sheet insulating lacquer and has handled, laminate into strips after, the bake pressure that insulated all around is solidified into integral body.So in alternating magnetic field, the slot wedge internal vortex is little, supplementary load loss are low, thereby improved electric efficiency, reduced electric machine temperature rise, and the power factor (PF) height of motor has reached energy-conservation and improved the technical-economic index of motor;
3, solved introduce technology in the slot wedge iron wire easily jump out electric machine iron core notch problem.Slot wedge is by adhesive plaster bake pressure solidified forming on many eradications edge thin wire boundling gel outsourcing glass fiber in the imported technology, block into single slot wedge again, because the easy short circuit of section part iron wire when blocking, and insulation is not good or gel is not firm, all can cause short circuit between iron wire, and slot wedge can generate heat under the alternating magnetic field of motor, under the effect of electromagnetic force, the bulging iron wire is jumped out the electric machine iron core notch in the middle of easily causing slot wedge, enters in the motor stator and rotor air gap, causes quality accidents such as motor stator and rotor coil breaks.This slot wedge is the little punching of silicon steel plate punching out wedgewise, laminates into strips to tighten with F level glass fiber rope behind the slot wedge again; Or rivet tightly with the insulation steel wire; Or single-point strip direction welds and vacuum is soaked F class F insulation lacquer, and outsourcing insulation bake pressure is solidified into integral body, can not jump out or vertically deviating from from the electric machine iron core groove from the electric machine iron core notch after being inlaid in the electric machine iron core groove.When adopting single-point strip direction to weld, because of a means of spot welds does not become the eddy current loop, can not increase loss, slot wedge can not generate heat, and has solved the defective of introducing technology, and has guaranteed the motor reliability of operation, has improved the quality of motor;
4, the utility model amount of containing magnetic conduction substance (silicon steel plate) is more much higher than containing magnetic conduction substance (iron) amount in the magnetic slot-seal that each factory uses at present.Slot wedge proportion has reached 6.75g/cm (silicon steel plate proportion is 7.5g/cm), because of the outsourcing insulation is slightly less than silicon steel plate proportion.Proportion 4.78g/cm relatively with the made magnetic slot-seal of introducing technology (iron content is the highest in the magnetic slot-seal of each factory's use at present), the proportion of this slot wedge is 1.413 times of imported technology magnetic slot-seal proportion, and the magnetic conduction ability is much higher than the magnetic slot-seal with the imported technology manufacturing.
Fig. 1 is a kind of schematic diagram of the prior art
Fig. 2 is another schematic diagram of the prior art
Fig. 3 is an another kind of schematic diagram of the prior art
Fig. 4 is for loading onto schematic diagram of the present utility model in motor coil
Fig. 5 is a structural representation of the present utility model
Fig. 6 is a kind of shape schematic diagram of the little punching among Fig. 5
Fig. 7 is another the shape schematic diagram of little punching among Fig. 5
The utility model will be further described below in conjunction with drawings and Examples.
The utility model is the paramagnetic guide magnetic slot-wedge that is used for motor, and it mainly comprises insulating barrier 1 and the slot wedge 2 that is included in the insulating barrier, and it is characterized in that: described slot wedge is made up of some little punchings 3 that vertically laminate, and is provided with vertical insulation securing member 4; High magnetic conduction low-loss cold-rolled silicon iron is adopted in an embodiment little punching, is provided with insulating barrier on the two sides of little punching, respectively establishes a groove 5 of a dislocation at the place, upper and lower bottom surface of little punching; The vertical insulation securing member card 4 that is arranged on slot wedge is contained in the groove 5 of each little punching 3, that the shape of little punching 3 can be is trapezoidal, rectangle, rhombus or other well-regulated shape, the little punching 3 that laminates into strips is generally the 120-300 sheet, mark 6 is the dynamo sheet iron core among the figure, and 7 is motor coil.
The utility model can be used in a kind of high magnetic conduction low-loss slot wedge on all kinds of electric machine iron cores, and its main raw material(s) is high magnetic conduction low-loss cold-rolled silicon iron.Punching out becomes the little punching of corresponding wedge shape according to all kinds of electric machine iron core slot wedge shape dimensional requirement, again the electric machine iron core Len req is repeatedly arrived in little punching, and makes length direction fastening, and circle wraps the magnetic conduction slot wedge that glass grey cloth bake pressure becomes required size more all around.When slot wedge was inlaid in the electric machine iron core groove, the lamination direction of this slot wedge and the lamination direction of electric machine iron core were identical, so this slot wedge is identical with the magnetic conduction direction of electric machine iron core, the magnetic conduction ability of magnetic conduction ability and electric machine iron core is also very strong.Thereby can reduce motor teeth groove influence of harmonic greatly, reduce the exciting current of magnetic pulsating, noise, vibration and the motor of motor, can reduce simultaneously the pulsation loss and the excitation loss of motor, thereby reduce the temperature rise of motor, can improve the power factor (PF) and the electric efficiency of asynchronous machine, reach energy-conservation effect, through primary Calculation, can reducing motor, to rotate air-gap reluctance about 20%, reduces exciting current about 14%.
Claims (4)
1, the paramagnetic guide magnetic slot-wedge that is used for motor, it mainly comprises insulating barrier and the slot wedge that is included in the insulating barrier, it is characterized in that: described slot wedge is made up of some little punchings that vertically laminate, and is provided with vertical insulation securing member.
2, by the described paramagnetic guide magnetic slot-wedge that is used for motor of claim 1, it is characterized in that: high magnetic conduction low-loss cold-rolled silicon iron is adopted in little punching, is provided with insulating barrier on the two sides of little punching, respectively establishes a groove of a dislocation at the place, upper and lower bottom surface of little punching.
3, by claim 1 or the 2 described paramagnetic guide magnetic slot-wedges that are used for motor, it is characterized in that: the vertical insulation securing member that is arranged on slot wedge is installed on the groove of each little punching.
4, by claim 1 or the 2 described paramagnetic guide magnetic slot-wedges that are used for motor, it is characterized in that: the shape of little punching can be trapezoidal, rectangle, rhombus or other well-regulated shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99239286 CN2392297Y (en) | 1999-08-16 | 1999-08-16 | Paramagnetic magnetic conducting slot wedge used for electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99239286 CN2392297Y (en) | 1999-08-16 | 1999-08-16 | Paramagnetic magnetic conducting slot wedge used for electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2392297Y true CN2392297Y (en) | 2000-08-16 |
Family
ID=34026568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99239286 Expired - Fee Related CN2392297Y (en) | 1999-08-16 | 1999-08-16 | Paramagnetic magnetic conducting slot wedge used for electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2392297Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516092A (en) * | 2013-09-29 | 2014-01-15 | 宁波菲仕运动控制技术有限公司 | Novel silicon steel sheet slot wedge manufacturing and installation method |
| CN104348313A (en) * | 2014-11-28 | 2015-02-11 | 中国西电集团公司 | Laminated magnetic slot wedge plate and production method thereof |
| CN106533110A (en) * | 2016-12-22 | 2017-03-22 | 科德数控股份有限公司 | Permanent magnet synchronous motor and method for reducing cogging torque |
| CN107979203A (en) * | 2017-12-27 | 2018-05-01 | 新疆金风科技股份有限公司 | Slot wedge, Stator and electrical machine and the method for manufacturing the slot wedge |
| CN108173372A (en) * | 2017-12-21 | 2018-06-15 | 上海电力学院 | A kind of stacked magnetic slot-seal |
| CN110571964A (en) * | 2019-09-25 | 2019-12-13 | 中车株洲电机有限公司 | Motor, stator and fold and rivet formula magnetism slot wedge |
| WO2020164781A1 (en) * | 2019-02-13 | 2020-08-20 | Wobben Properties Gmbh | Groove-closing wedge for a wind turbine generator, wind turbine generator having same, and method |
-
1999
- 1999-08-16 CN CN 99239286 patent/CN2392297Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516092A (en) * | 2013-09-29 | 2014-01-15 | 宁波菲仕运动控制技术有限公司 | Novel silicon steel sheet slot wedge manufacturing and installation method |
| CN103516092B (en) * | 2013-09-29 | 2016-02-10 | 宁波菲仕运动控制技术有限公司 | A kind of silicon steel sheet slot wedge manufacture and installation method |
| CN104348313A (en) * | 2014-11-28 | 2015-02-11 | 中国西电集团公司 | Laminated magnetic slot wedge plate and production method thereof |
| CN106533110A (en) * | 2016-12-22 | 2017-03-22 | 科德数控股份有限公司 | Permanent magnet synchronous motor and method for reducing cogging torque |
| CN108173372A (en) * | 2017-12-21 | 2018-06-15 | 上海电力学院 | A kind of stacked magnetic slot-seal |
| CN107979203A (en) * | 2017-12-27 | 2018-05-01 | 新疆金风科技股份有限公司 | Slot wedge, Stator and electrical machine and the method for manufacturing the slot wedge |
| WO2020164781A1 (en) * | 2019-02-13 | 2020-08-20 | Wobben Properties Gmbh | Groove-closing wedge for a wind turbine generator, wind turbine generator having same, and method |
| CN110571964A (en) * | 2019-09-25 | 2019-12-13 | 中车株洲电机有限公司 | Motor, stator and fold and rivet formula magnetism slot wedge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |