CN204559249U - A kind of motor being applicable to internal rotor permanent-magnetic direct wind-driven generator group - Google Patents
A kind of motor being applicable to internal rotor permanent-magnetic direct wind-driven generator group Download PDFInfo
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- CN204559249U CN204559249U CN201420812905.4U CN201420812905U CN204559249U CN 204559249 U CN204559249 U CN 204559249U CN 201420812905 U CN201420812905 U CN 201420812905U CN 204559249 U CN204559249 U CN 204559249U
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- end cap
- stator
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- 239000000463 material Substances 0.000 claims abstract description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 9
- 230000032683 aging Effects 0.000 claims description 5
- 230000001788 irregular Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a kind of motor being applicable to internal rotor permanent-magnetic direct wind-driven generator group, stator core (5) circumferencial direction has groove-shaped notch, clamping screw (7) is through stator core (5), stator platen (6) and stator core (5) are pressed on the rear end cap (3) of motor by the bolt of end, rear end cap (3) is bolted on motor casing (1), rear end cap (3) is bolted and is fixed on mainframe (4), motor casing (1) has several breach at circumferencial direction, in these breach, radiating ribs (8) is directly fixed on stator core (5) outer surface by bolt, space simultaneously between radiating ribs (8) and stator core (5) is filled by the material of high thermal conductivity coefficient.This structural design significantly reduces the thermal resistance between stator core (5) and radiating ribs (8), effectively can reduce the temperature rise of motor internal.
Description
Technical field
The utility model relates to technical field of wind power generating equipment, especially relates to a kind of motor being applicable to medium-sized and large-scale internal rotor permanent-magnetic direct-driving type wind power generation unit.
Background technology
In the prior art, at present, wind power generation, with its environmental protection, advantage that cost of electricity-generating is lower, obtains tremendous expansion in a lot of country.Permanent magnet direct-drive generator, with its simple and reliable advantage, more and more obtains liking of user.Current typical several internal rotor permanent-magnetic direct wind-driven generator, the mode that some employings cool naturally (i.e. the heat-transfer path of heat mainly iron core-motor casing-radiating ribs) cools, and what have is cooled generator by special air cooling or water-cooling system.
Adopt the Wind turbines of nature cooling, the more typically 1.5MW unit of Shanghai ten thousand moral.The heat that the loss of electric machine produces is transmitted to the radiating ribs outside motor casing by iron core and motor casing, then carries out convection current with air and dispels the heat.This mode is simple and practical.But because motor diameter is very large, between stator core and stator casing, assembling is difficult to carry out press-fiting or hot charging, therefore the contact between iron core and motor casing is not the contact of metal and metal completely, but there is large-area air gap, thus the thermal resistance in heat-transfer path is just comparatively large, and temperature rise can be higher when rated point for generator operation.
Adopt the Wind turbines that independent cooling system cools motor, typically the 2MW unit of Hunan electricity.Owing to there being independently cooling system, generator obtains effective cooling.But because add set of system, cost adds, and too increases fault point simultaneously.
Summary of the invention
In order to solve the problems referred to above existed in existent technique, the utility model provides a kind of motor being applicable to internal rotor permanent-magnetic direct wind-driven generator group, mainly comprises: mainframe, motor casing, front and rear cover, stator core, clamping screw, stator platen and radiating ribs; Stator core circumferencial direction has groove-shaped notch, clamping screw is through stator core, stator platen and stator core are pressed on the rear end cap of motor by the bolt of end, rear end cap is bolted on motor casing, rear end cap is bolted and is fixed on mainframe, motor casing has several breach at circumferencial direction, in these breach, radiating ribs is directly fixed on stator core outer surface by bolt, and the space simultaneously between radiating ribs and stator core is filled by the material of high thermal conductivity coefficient.
Further, described stator core is interlocked to fold by certain thickness fan-shaped silicon steel sheet and forms.
Further, clamping screw to be a centre be irregular section (as trapezoidal etc.), two ends are rods of stud, irregular section, middle part part is coordinated by work difference with the groove-shaped notch on stator silicon steel plate, for limiting moving radially of silicon steel sheet, play positioning action when folding stator core simultaneously.
Further, stator platen is that a circumferencial direction has the annular element being welded with end finger inside through hole, can welding form.Clamping screw, by the through hole on stator circumference direction, front and back, by nut, provides pretightning force, silicon steel sheet is compressed.The effect of the end finger on platen prevents end silicon steel sheet from upspringing and layering.
Further, the opening part of motor casing circumferencial direction, the Shell Plate ageing-resistant by low-density blocks.Prevent rainwater, dust etc. from entering, motor internal environment is played a protective role.Because Shell Plate does not bear the load from wind wheel, therefore can select low-density ageing-resistant Plastic or composite material class plate, this is conducive to the weight reducing motor casing.
Fan-shaped silicon steel sheet circumferencial direction has dovetail groove every certain angle punching, when folding stator core, each silicon steel sheet by dovetail groove with the clamping screw fixed is installed and folds.
This structural design significantly reduces the thermal resistance between stator core and radiating ribs, effectively can reduce the temperature rise of motor internal.Be different from motor casing in traditional internal rotor wind driven electric generator and subject all load from wind wheel, in this configuration, motor casing bears moment of flexure, shearing force, push-pull effort from wind wheel, and finally born by back end cover for motor by stator core for the torque generated electricity from wind wheel, motor casing does not bear the torque of the motor from wind wheel, make the load of all parts more reasonable like this, it is too thick and heavy that motor casing also can design.
Owing to adopting technique scheme, spread to increase the air velocity on radiating ribs surface and choose the measures such as less specific electric load, can be more simple and effective to motor cooling, extra system need not be increased.This structure makes the power transmission of each parts of motor more reasonable simultaneously, effectively can reduce the overall weight of motor.
Accompanying drawing explanation
Fig. 1 is according to the assembling schematic diagram being applicable to the motor of internal rotor permanent-magnetic direct wind-driven generator group of the present utility model;
Fig. 2 is the internal cross section schematic diagram being applicable to the motor of internal rotor permanent-magnetic direct wind-driven generator group shown in Fig. 1;
Fig. 3 is the close-up schematic view of Fig. 2.
Wherein, the implication of the Reference numeral in Fig. 1-3 is as follows: 1, motor casing; 2, rotor; 3, rear end cap; 4, mainframe; 5, stator core; 6, stator platen; 7, clamping screw; 8, radiating ribs; 9, Shell Plate.
Embodiment
Execution mode of the present utility model is illustrated below in conjunction with accompanying drawing 1-3:
According to a kind of motor being applicable to internal rotor permanent-magnetic direct wind-driven generator group of the present utility model, mainly comprise: mainframe 4, motor casing 1, rear end cap 3, stator core 5, clamping screw 7, stator platen 6 and radiating ribs 8; Stator core 5 circumferencial direction has groove-shaped notch, clamping screw 7 is through stator core 5, stator platen 6 and stator core 5 are pressed on the rear end cap 3 of motor by the bolt of end, rear end cap 3 is bolted on motor casing 1, rear end cap 3 is bolted and is fixed on mainframe 4, motor casing 1 has several breach at circumferencial direction, in these breach, radiating ribs 8 is directly fixed on stator core 5 outer surface by bolt, and the space simultaneously between radiating ribs 8 and stator core 5 is filled by the material of high thermal conductivity coefficient.
Stator core 5 is formed by staggered the folding of certain thickness fan-shaped silicon steel sheet.Clamping screw 7 is centres is irregular section, and two ends are rods of stud.Stator platen 6 is that a circumferencial direction has the annular element being welded with end finger inside through hole, can welding form.The opening part of motor casing 1 circumferencial direction, the Shell Plate 9 ageing-resistant by low-density blocks.Prevent rainwater, dust etc. from entering, motor internal environment is played a protective role.
Because Shell Plate 9 does not bear the load from wind wheel, therefore can select low-density ageing-resistant Plastic or composite material class plate, this is conducive to the weight reducing motor casing 9.Clamping screw 7 is through stator core 5, and stator platen 6 and stator core 5 are pressed on the rear end cap 3 of motor by the bolt of end, and such the radial and axial of stator core 5 is obtained for constraint.Radiating ribs 8 can select the aluminium section bar that conductive coefficient is high.
This structural design significantly reduces the thermal resistance between stator core 5 and radiating ribs 8, effectively can reduce the temperature rise of motor internal.Be different from motor casing 1 in traditional internal rotor wind driven electric generator and subject all load from wind wheel, in this configuration, motor casing 1 bears moment of flexure, shearing force, push-pull effort from wind wheel, and finally born by back end cover for motor 3 by stator core 5 for the torque generated electricity from wind wheel, motor casing 1 does not bear the torque from wind wheel, make the load of all parts more reasonable like this, it is too thick and heavy that motor casing 1 also can design.
To those skilled in the art, be understandable that and can make various modifications and variations to above-mentioned execution mode and not depart from marrow of the present utility model and scope.Scope of the present utility model is limited by appended claim.
Claims (5)
1. be applicable to a motor for internal rotor permanent-magnetic direct wind-driven generator group, mainly comprise: mainframe (4), motor casing (1), rear end cap (3), stator core (5), clamping screw (7), stator platen (6) and radiating ribs (8), stator core (5) circumferencial direction has groove-shaped notch, clamping screw (7) is through stator core (5), stator platen (6) and stator core (5) are pressed on the rear end cap (3) of motor by the bolt of end, rear end cap (3) is bolted on motor casing (1), rear end cap (3) is bolted and is fixed on mainframe (4), motor casing (1) has several breach at circumferencial direction, in these breach, radiating ribs (8) is directly fixed on stator core (5) outer surface by bolt, space simultaneously between radiating ribs (8) and stator core (5) is filled by the material of high thermal conductivity coefficient.
2. motor according to claim 1, wherein: described stator core (5) is formed by staggered the folding of the fan-shaped silicon steel sheet that 0.5mm is thick.
3. motor according to claim 1, wherein: described clamping screw (7) is a centre is irregular section, and two ends are rods of stud.
4. motor according to claim 1, wherein: described stator platen (6) is that a circumferencial direction has the annular element being welded with end finger inside through hole, can welding form.
5. motor according to claim 1, wherein: the opening part of described motor casing (1) circumferencial direction, the Shell Plate (9) ageing-resistant by low-density blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420812905.4U CN204559249U (en) | 2014-12-22 | 2014-12-22 | A kind of motor being applicable to internal rotor permanent-magnetic direct wind-driven generator group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420812905.4U CN204559249U (en) | 2014-12-22 | 2014-12-22 | A kind of motor being applicable to internal rotor permanent-magnetic direct wind-driven generator group |
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| Publication Number | Publication Date |
|---|---|
| CN204559249U true CN204559249U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420812905.4U Active CN204559249U (en) | 2014-12-22 | 2014-12-22 | A kind of motor being applicable to internal rotor permanent-magnetic direct wind-driven generator group |
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| CN (1) | CN204559249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769471A (en) * | 2017-10-16 | 2018-03-06 | 常州朗奇威电器有限公司 | A kind of stator core construction for motor |
-
2014
- 2014-12-22 CN CN201420812905.4U patent/CN204559249U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769471A (en) * | 2017-10-16 | 2018-03-06 | 常州朗奇威电器有限公司 | A kind of stator core construction for motor |
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| DD01 | Delivery of document by public notice |
Addressee: TIANJIN ZHIMAI LVNENG TECHNOLOGY CO.,LTD. Document name: Notification to Go Through Formalities of Registration |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Hao Shasha Document name: payment instructions |
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| DD01 | Delivery of document by public notice |