CN201928094U - Self-adjusting iron core structure of direct-drive permanent magnet wind power generator stator - Google Patents
Self-adjusting iron core structure of direct-drive permanent magnet wind power generator stator Download PDFInfo
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- CN201928094U CN201928094U CN2010206901687U CN201020690168U CN201928094U CN 201928094 U CN201928094 U CN 201928094U CN 2010206901687 U CN2010206901687 U CN 2010206901687U CN 201020690168 U CN201020690168 U CN 201020690168U CN 201928094 U CN201928094 U CN 201928094U
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- pressing plate
- stator core
- permanent magnet
- direct
- wind power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model provides a self-adjusting iron core structure of a direct-drive permanent magnet wind power generator stator, which comprises a stator iron core and a stand which are mutually connected, wherein a first pressure plate and a second pressure plate are respectively arranged at both ends of the stator iron core, the stator iron core, the first pressure plate and the second pressure plate are connected and fixed by a tightening screw rod, the stand is provided with a position-limiting groove corresponding to the first pressure plate, the first pressure plate is inlaid in the position-limiting groove, an axial expansion space is arranged between the position-limiting groove and the first pressure plate, and the end of the stator iron core which is arranged at one end of the second pressure plate is a free end which is not restricted by the stand, therefore, during heating, the stator iron core and the tightening screw rod are wholly extended without generating abnormal deformation.
Description
Technical field
The utility model relates to a kind of direct-drive permanent magnet wind power generator group, particularly a kind of direct-drive permanent magnet wind power generator stator self-adjusting core structure.
Background technology
The direct-drive permanent magnet wind power generator group is the main product of current wind-driven generator, wind-driven generator is one of its critical piece, as shown in Figure 1, the stator core 1 ' of existing wind-driven generator is fixed on the support 2 ', the axial two ends of stator core 1 ' yoke portion are provided with pressing plate 31 ' and 32 ', and two pressing plates 31 ' and 32 ' are to fix by a stretching screw 5 ' with stator core 1 '.Support 2 ' is provided with a stopper slot 21 ' vertically, this stopper slot 21 ' one end is and support 2 ' integrated fixed part, the other end is spacing by a snap ring 4 ' locking, this stator core 1 ' is embedded within the stopper slot 21 ' together with two pressing plates 31 ' and 32 ', and the external diameter of stopper slot 21 ' equates with the internal diameter of stator core 1 ' and two pressing plates 31 ' and 32 ', in the time of fixedly, earlier an end of stator core 1 ' is pushed against fixed part in stopper slot 21 ' by a pressing plate 31 ', the other end is locked with described snap ring 4 ' together with another pressing plate 32 ', make the axle of stator core 1 ', radially and all do not have unnecessary space, the stator core 1 ' back side to use rib (not shown) and support 2 ' to weld fixing again between the support 2 '.This stator core one end is fixed, the other end is also with the dead fixed form of snap ring button, when the generator oepration at full load, lamination is heated and will expands to axial-radial, because iron mandrel is fixed to two ends, the axle of iron core, radially there is not an expansion space, so stator core finally can be to axially arching upward, stator core surface waviness causes the stator core slot distortion, destroy fixed subcoil insulating, cause the stator coil burnout failure; In addition, the stator core back side and muscle welding cause iron core surface short circuit, and iron core eddy current loss is increased, and the iron core temperature rise is increased, so demand urgently improving.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of direct-drive permanent magnet wind power generator stator self-adjusting core structure to make and has radial and axial expansion space between stator core and the support, prevents the stator core temperature distortion, damages coil insulation.
The technical problems to be solved in the utility model is achieved in that this direct-drive permanent magnet wind power generator stator self-adjusting core structure, comprise interconnective stator core and support, the stator core two ends are respectively equipped with first pressing plate and second pressing plate, and described stator core, first pressing plate and second pressing plate are connected and fixed by a stretching screw; Wherein: the position of corresponding described first pressing plate of described support is provided with a stopper slot, and described first pressing plate is embedded in this stopper slot, and makes between the stopper slot and first pressing plate and have the axial expansion space; Stator core is positioned at an end of second pressing plate for not being subjected to support restriction free end, and so, stator core and stretching screw overall elongated can not produce abnormal deformation when being heated.
Further, the axial dimension of described stopper slot is than the big 2mm of axial dimension of first pressing plate, and described first pressing plate is located at the stage casing of stopper slot, makes the two ends of first pressing plate that about 1mm expansion space all be arranged in stopper slot.
Also has the radial expansion space between described support and stator core and second pressing plate.
The inner wall surface of described support has a sprayed-on Al layer, stator core is heated is close to support after the radial expansion, helps the stator core heat and is transmitted to the external world by support.
The both sides of described stator core also tighten screw axial with one respectively and push against, and guarantee that the degree of flicking of stator iron core tooth portion meets the quality standard requirement.
The described contact-making surface that tightens screw and stator core is respectively equipped with a backing plate, does not destroy iron core when guaranteeing to tighten screw.
Described stator core and support are fixing by a plurality of equally distributed dove tail positioning bar welding.
Advantage of the present utility model is: stator core one end is fixed by first pressing plate, stator core, second pressing plate and support leave the gap, make and have the radial expansion space between stator core and the support, the other end of stator core and second pressing plate and support do not weld extremely, not restricted by support, stator core can axial free expanded by heating, prevents the stator core temperature distortion, damages coil insulation.
Description of drawings
In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings.
Fig. 1 is the structural representation of direct-drive permanent magnet wind power generator stator core construction in the prior art.
Fig. 2 is the structural representation of the utility model direct-drive permanent magnet wind power generator stator self-adjusting core structure.
Fig. 3 is the distribution map of the dove tail positioning bar of the utility model direct-drive permanent magnet wind power generator stator self-adjusting core structure.
Fig. 4 is the welding schematic diagram of the dove tail positioning bar of the utility model direct-drive permanent magnet wind power generator stator self-adjusting core structure.
Embodiment
See also Fig. 2 to shown in Figure 4, direct-drive permanent magnet wind power generator stator self-adjusting core structure of the present utility model, comprise stator core 1 and support 2, the two ends of stator core 1 are respectively equipped with one first pressing plate 3 and second pressing plate 4, and described stator core 1, first pressing plate 3 and second pressing plate 4 are connected and fixed by a stretching screw 5; The position of described support 2 corresponding described first pressing plates 3 is provided with a stopper slot 21, described first pressing plate 3 is embedded in this stopper slot 21, the axial dimension of described stopper slot 21 is than the big 2mm of axial dimension of first pressing plate 3, and described first pressing plate 3 is located at the stage casing of stopper slot 21, make the two ends of first pressing plate 3 that about 1mm expansion space all be arranged in stopper slot 21, again can be by realizing axial limiting between first pressing plate 3 and stopper slot 21 realizations and the support 2; The stator core 1 and second pressing plate 4 and 2 on support leave the gap, make stator core 1 have a radial expansion space A.In addition, the end that stator core 1 is positioned at second pressing plate 4 is not restricted by support, and promptly to be positioned at an end of second pressing plate 4 be free end to stator core 1, thereby makes stator core 1 bulk expansion of can axially freely being heated.
The both sides of described stator core 2 also tighten screw 6 with one respectively and axially push against, and described two contact-making surfaces that tighten screw 6 and stator core 1 two ends are respectively equipped with a backing plate 7, do not destroy stator core 1 when guaranteeing to tighten screw 6.Tighten screw 6 by this, the tooth portion of described stator core 1 can axially closely be fixed, guarantee that the degree of flicking of stator core 1 tooth portion meets the quality standard requirement.
Described stator core 1 is fixing by 8 welding of dove tail positioning bar with support 2.Dove tail positioning bar 8 adopts plug welding technology with support 2, and the design of dove tail positioning bar consent position need guarantee that dove tail positioning bar evenly distributes.
The inner wall surface of described support has a sprayed-on Al layer, and the elasticity of sprayed-on Al layer is better, has the effect of buffering, and is convenient to heat radiation.
Assembling process of the present utility model can be carried out as follows:
1, designs the structure and the size of punching, first pressing plate 3 and second pressing plate 4 and the support 2 of stator core 1 on request, and make the external diameter of second pressing plate 4 and stator core 1 littler than the internal diameter of support 2.
2, the punching yoke portion of stator core 1 leaves the stretching screw hole, axially passes for stretching screw 5 to be locked.
3, stretching screw 5 by technological requirement in advance the good tooth of car, wrap insulation.
4, the inwall of support 2 carries out aluminium-plated processing by technological requirement.
5, weld fixedly muscle at support 2 inwalls by drawing rib position and weldering muscle technological requirement.
6, the punching with stator core 1 press-fits by self-adjusting iron core press-loading process, make stator core 1 and support 2 between leave radial expansion space A.
7, locking stretching screw 5, and tighten screw 6, the tooth portion of stator core 1 is axially closely compressed, guarantee that the degree of flicking of stator core 1 tooth portion meets the quality standard requirement.。
In sum, stator core one end of the present utility model is fixed by first pressing plate, leave the radial expansion space between stator core and the support, the other end of stator core and second pressing plate and support do not weld extremely, not restricted by support, stator core can axial free expanded by heating, can prevent the stator core abnormal deformation that is heated to a great extent, damages coil insulation.
Claims (7)
1. direct-drive permanent magnet wind power generator stator self-adjusting core structure, comprise interconnective stator core and support, the stator core two ends are respectively equipped with first pressing plate and second pressing plate, and described stator core, first pressing plate and second pressing plate are connected and fixed by a stretching screw; It is characterized in that: the position of corresponding described first pressing plate of described support is provided with a stopper slot, and described first pressing plate is embedded in this stopper slot, and makes between the stopper slot and first pressing plate and have the axial expansion space; Stator core is positioned at an end of second pressing plate for not being subjected to the free end of support restriction.
2. direct-drive permanent magnet wind power generator stator self-adjusting core structure according to claim 1 is characterized in that: the axial dimension of described stopper slot is than the big 2mm of axial dimension of first pressing plate, and described first pressing plate is located at the stage casing of stopper slot.
3. direct-drive permanent magnet wind power generator stator self-adjusting core structure according to claim 1 is characterized in that: also have the radial expansion space between described support and stator core and second pressing plate.
4. direct-drive permanent magnet wind power generator stator self-adjusting core structure according to claim 3, it is characterized in that: the inner wall surface of described support has a sprayed-on Al layer.
5. direct-drive permanent magnet wind power generator stator self-adjusting core structure according to claim 1, it is characterized in that: the both sides of described stator core also tighten screw axial with one respectively and push against, and the two described screws that tighten also pass first pressing plate or second pressing plate respectively.
6. direct-drive permanent magnet wind power generator stator self-adjusting core structure according to claim 5, it is characterized in that: the described contact-making surface that tightens screw and stator core is respectively equipped with a backing plate.
7. direct-drive permanent magnet wind power generator stator self-adjusting core structure according to claim 1 is characterized in that: described stator core and support are fixing by a plurality of equally distributed dove tail positioning bar welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206901687U CN201928094U (en) | 2010-12-29 | 2010-12-29 | Self-adjusting iron core structure of direct-drive permanent magnet wind power generator stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206901687U CN201928094U (en) | 2010-12-29 | 2010-12-29 | Self-adjusting iron core structure of direct-drive permanent magnet wind power generator stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201928094U true CN201928094U (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206901687U Expired - Fee Related CN201928094U (en) | 2010-12-29 | 2010-12-29 | Self-adjusting iron core structure of direct-drive permanent magnet wind power generator stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201928094U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795962A (en) * | 2015-05-14 | 2015-07-22 | 南车株洲电力机车研究所有限公司 | Linear induction motor of routine conductive magnetic levitation vehicle and primary iron core of linear induction motor |
| CN105263844A (en) * | 2013-05-28 | 2016-01-20 | 奥的斯电梯公司 | Elevator machine and stator support structure |
| CN108964375A (en) * | 2018-05-30 | 2018-12-07 | 大唐东北电力试验研究院有限公司 | A kind of generator core intelligent hydraulic tension device |
| CN115514118A (en) * | 2022-09-29 | 2022-12-23 | 国家电投集团重庆江口水电有限责任公司 | Stator core punching sheet fixing structure, stator and motor |
-
2010
- 2010-12-29 CN CN2010206901687U patent/CN201928094U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105263844A (en) * | 2013-05-28 | 2016-01-20 | 奥的斯电梯公司 | Elevator machine and stator support structure |
| US10081518B2 (en) | 2013-05-28 | 2018-09-25 | Otis Elevator Company | Elevator machine and stator support structure |
| CN105263844B (en) * | 2013-05-28 | 2019-11-26 | 奥的斯电梯公司 | Elevator machine and stator support structure |
| CN104795962A (en) * | 2015-05-14 | 2015-07-22 | 南车株洲电力机车研究所有限公司 | Linear induction motor of routine conductive magnetic levitation vehicle and primary iron core of linear induction motor |
| CN108964375A (en) * | 2018-05-30 | 2018-12-07 | 大唐东北电力试验研究院有限公司 | A kind of generator core intelligent hydraulic tension device |
| CN108964375B (en) * | 2018-05-30 | 2024-02-06 | 大唐保定热电厂 | Intelligent hydraulic tensioning device for generator iron core |
| CN115514118A (en) * | 2022-09-29 | 2022-12-23 | 国家电投集团重庆江口水电有限责任公司 | Stator core punching sheet fixing structure, stator and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20131229 |