CN201739086U - Megawatt direct-drive low-speed permanent magnet wind driven generator - Google Patents
Megawatt direct-drive low-speed permanent magnet wind driven generator Download PDFInfo
- Publication number
- CN201739086U CN201739086U CN2010202140687U CN201020214068U CN201739086U CN 201739086 U CN201739086 U CN 201739086U CN 2010202140687 U CN2010202140687 U CN 2010202140687U CN 201020214068 U CN201020214068 U CN 201020214068U CN 201739086 U CN201739086 U CN 201739086U
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- driven generator
- megawatt
- main shaft
- drive low
- rotor shaft
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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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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model designs a megawatt direct-drive low-speed permanent magnet wind driven generator, which comprises a tower barrel rotation support, a wind wheel hub, a stator machine case (1), a stator winding (3), a permanent magnetic pole (4), a back end cover (9), a back bearing (12), a front bearing (13), a fixed main shaft (14) and a rotor shaft (15), wherein the rotor shaft (15) is arranged on the fixed main shaft (14) through the front bearing (13) and the back bearing (12), the fixed main shaft (14) is fixed on the tower barrel rotation support and is directly connected with the backend cover (9), the back end cover (9) and the front end cover (5) are connected with the stator machine shell (1), the wind wheel hub is connected with the rotor shaft (15), the permanent magnet pole (4) is fixed on the rotor shaft (15), the rotor winding (3) is arranged on the rotor machine shell (1), the number of the permanent magnet poles (4) is 70, and the number of the rotor windings is 300-350. The wind driven generator can omit the mechanisms of a gear box, a coupler and the like, greatly reduces the production cost, reduces the power loss, relieves the weight of the generator, reduces the design difficulty, reduces the fault of unit, improves the annual operation time, and increases the generated energy.
Description
Technical field
The utility model relates to a kind of wind-driven generator, especially is a kind of megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator.
Background technique
Because shortage of energy sources and exhaustion, wind energy has become a kind of new alternative energy source.But it is current, most of wind-driven generators adopt the double-feedback aerogenerator type, owing to need to improve the rotating speed of generator, the double-fed type generator needs a gearbox, this makes volume, weight and the cost of whole wind power generator all improve greatly, increase the loss of power, and increased design difficulty and the universal difficulty of wind-power electricity generation, be unfavorable for the development of wind-powered electricity generation cause.Therefore need a kind of no gearbox at present, efficient is higher, the simpler megawatt-level low-speed permanent magnet direct-driving aerogenerator of structure.
Therefore in addition, the dead axle of present wind-driven generator and rotating shaft are cylindrical, owing to have the space between the bearing, when wheel rotation, can produce axially and rocking radially, thereby cause the wheel rotation instability.
The model utility content
The purpose of this utility model is to provide a kind of megawatt-level low-speed permanent-magnetic wind driven generator, it comprises the revolution of tower tube support, wind wheel wheel hub, stator cage, staor winding, permanent magnetism magnetic pole, rear end cover, rear bearing, fore bearing, decides main shaft, rotor shaft and rotor field spider, described rotor shaft is installed in by described fore bearing and rear bearing describedly to be decided on the main shaft, describedly decide main shaft and be fixed on the revolution of described tower tube and support and go up and directly be connected with described rear end cover, described rear end cover is connected with described stator cage with front cover.In addition, the rotor of wind-driven generator of the present utility model is an internal rotor, thereby described wind wheel wheel hub is connected the rotation of direct driving rotor axle with described rotor shaft, described permanent magnetism magnetic pole is fixed on the described rotor shaft by described rotor field spider, described staor winding is installed on the described stator cage, the number of described permanent magnetism magnetic pole is 70-80 and evenly distributed in the rotor circumference direction, and the number of described staor winding is the 300-350 group.
Preferably, described rotor shaft all is all to be that tapering is the taper hollow shaft of 0.35-0.40 with deciding main shaft.
Preferably, described rotor shaft and the center line of deciding main shaft depart from 2-7 ° at an end that is connected wheel hub on respect to horizontal alignment.
Preferably, the reinforcement gusset central position of described rotor field spider inside has annular through-hole.
Preferably, on the described stator cage radiating fin is housed.
Preferably, on the described rotor shaft brake disc is installed, manual brake mechanism is installed on the described rear end cover and is connected hydraulic pressure lock initiatively on the described brake disc (10).
Preferably, describedly decide to be equipped with on the main shaft lightning protection carbon brush.
Preferably, the rainproof groove of two rings is housed on described front cover: interior rainproof groove and outer rainproof groove.
Preferably, described fore bearing is the aligning roller bearing, and described rear bearing is a single row roller bearing.
The beneficial effects of the utility model are as follows.
The rotor of wind-driven generator of the present utility model is an internal rotor, that is, thereby described wind wheel wheel hub is connected the rotation of direct driving rotor axle with described rotor shaft, and described permanent magnetism magnetic pole is fixed on the described rotor shaft, and described staor winding is installed on the described stator cage.The impeller hub drives rotor shaft is rotated, the rotor shaft rotation then drives permanent magnetism magnetic pole and make circular movement in staor winding, produce rotating magnetic field during through the coil of peritrochanteric, make coil form the cutting magnetic induction line motion, realize generating thereby generate induction current in coil.Adopt the mechanical structure of wind-driven generator of the present utility model, save mechanisms such as gearbox and coupling, greatly reduce cost of production, reduce power loss, alleviated the weight of generator, reduced design difficulty, reduce the unit fault, improved a year working time, increased generated energy.
In addition, wind-driven generator of the present utility model has saved electric exciter control system, for wind-driven generator provides permanent magnetic field, has saved the energy.
Further, enough electric energy can be produced when the low cruise, the method that increases permanent magnetism magnetic pole number and staor winding number of stitches can be adopted for realizing permanent-magnetic wind driven generator.Generator of the present utility model is equipped with 70-80 permanent magnetism magnetic pole, and is evenly distributed in the rotor circumference direction, and 300-350 group coil is installed on the corresponding stator.Like this, as long as just can realize generating as long as wind speed reaches 3.5 metre per second (m/s)s.
Described rotor shaft all is that tapering is the taper hollow shaft of 0.35-0.40 with deciding main shaft.Diminished shaft can make wheel rotation stable.But if tapering is excessive, fore bearing is excessive at static lower stress, causes its lost of life; If tapering is too small, then do not reach the effect of stable rotation.Therefore, the repetition test by in calculating and putting into practice is set between the 0.35-0.40 tapering of taper hollow shaft.Like this, both having avoided fore bearing stressed excessive, can be again that impeller stably rotates.
Further, described rotor shaft and the center line of deciding main shaft depart from 2-7 ° at an end that is connected wheel hub on respect to horizontal alignment, and the little setting of steeving that makes progress by such can make the rotation of rotor shaft more stable.
The reinforcement gusset central position of rotor field spider inside has annular through-hole, at utmost to alleviate the weight of generator, reduces cost.
Radiating fin is housed on the stator cage, and the heat that produces when taking care of yourself generator operation can distribute fully, guarantees that generator is in normal ambient temperature all the time, does not need to increase traditional forced air cooling measure.
On the described rotor shaft brake disc is installed, initiatively lock of manual brake mechanism and hydraulic pressure is installed on the described rear end cover.In the motor operation course, as think parking checking or maintenance etc. can use hydraulic pressure initiatively lock motor is shut down, realize mechanical brake by manual brake mechanism again, make the motor stall.The brake modes that adopts hydraulic pressure active lock and manual brake mechanism to cooperate, safety and stability, dangerous possibility appears in the operator when reducing manually to overhaul.
Describedly decide the lightning protection carbon brush is installed on the main shaft, decide front-end of spindle and by bolton the lightning protection carbon brush has been installed, utilize and decide main shaft hollow and import thunder and lightning into the tower tube, effectively lightning protection no matter how wheel hub rotates all can effectively be conducted electricity, the trouble free service of assurance generator.
The rainproof groove of two rings is housed: interior rainproof groove and outer rainproof groove on described front cover.It is rainproof to adopt inside and outside rainproof groove to carry out, and effectively stops rainwater dust storm etc. to enter generator inside.
Description of drawings
Fig. 1 is the sectional view of megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator of the present utility model.
1 stator cage, 2 radiating fin, 3 staor winding, 4 permanent magnetism magnetic poles, 5 front covers, 6 lightning protection carbon brush, 7 fore bearing inner pressure rings, 8 fore bearing outer press rings, 9 rear end covers, 10 brake discs, 11 manual brake mechanisms, 12 rear bearings, 13 fore bearings, 14 are decided initiatively lock of main shaft, 15 rotor shafts, 16 hydraulic pressure.
Embodiment
Describe below in conjunction with 1 pair of megawatt-level low-speed permanent-magnetic wind driven generator of the present utility model of accompanying drawing, it comprises: stator cage (1), radiating fin (2), staor winding (3), permanent magnetism magnetic pole (4), front cover (5), lightning protection carbon brush (6), fore bearing inner pressure ring (7), fore bearing outer press ring (8), rear end cover (9), brake disc (10), manual brake mechanism (11), rear bearing (12), fore bearing (13), decide initiatively lock (16) of main shaft (14), rotor shaft (15), hydraulic pressure.Wherein, it is fixing by bolt and rear end cover (9) to decide main shaft (14), rotor shaft (15) and decide to install and fix by fore bearing (13) and rear bearing (12) between the main shaft (14), rotor shaft (15) and the center line of deciding main shaft (14) depart from 5 ° at an end that is connected wheel hub on respect to horizontal alignment.Wherein fore bearing (13) is the aligning roller bearing, and described rear bearing (12) is a single row roller bearing.
Rotor shaft (15) rear end is connected with brake disc (10) by bolt, and the rotor field spider frame is on the outside conical surface of rotor shaft (15).Fix 76 permanent magnetism magnetic poles (4) on the external cylindrical surface of rotor field spider, stator cage (1) passes through bolton with rear end cover (9), and stator cage (1) is gone up and is fixed with 320 staor winding (3) by dove tail muscle.
Radiating fin (2) is housed on the stator cage (1), decides to be equipped with on the main shaft (14) lightning protection carbon brush (6).Front cover (5) adopts bolt to be connected and fixed with stator cage (1), rainproof groove and outer rainproof groove in front cover (5) outer surface adds.Brake disc (10) is by being bolted on rotor shaft (15) ear end face, and hydraulic brake (16) is by being bolted on the rear end cover (9), and manual brake mechanism (11) is fixed on upper position on the rear end cover (9) by bolt.The sealing of rear bearing is to realize by brake disc (10) and the industrial felt decided between the main shaft (14), the motor front end is added a cover fore bearing outer press ring (8) and fore bearing inner pressure ring (7), fore bearing inner pressure ring (7) is deciding to seal up industrial felt between fore bearing inner pressure ring (7) and the outer press ring (8) on main shaft (14) front-end face by bolton.
Claims (9)
1. megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator, comprise tower tube revolution support, the wind wheel wheel hub, stator cage (1), staor winding (3), permanent magnetism magnetic pole (4), rear end cover (9), rear bearing (12), fore bearing (13), decide main shaft (14), rotor shaft (15) and rotor field spider, described rotor shaft (15) is installed in by described fore bearing (13) and rear bearing (12) describedly to be decided on the main shaft (14), describedly decide main shaft (14) and be fixed on the revolution of described tower tube and support and go up and directly be connected with described rear end cover (9), described rear end cover (9) is connected with described stator cage (1) with front cover (5), it is characterized in that, described wind wheel wheel hub is connected with described rotor shaft (15), described permanent magnetism magnetic pole (4) is fixed on the described rotor shaft (15) by described rotor field spider, described staor winding (3) is installed on the described stator cage (1), the number of described permanent magnetism magnetic pole (4) is 70-80, and the number of described staor winding is the 300-350 group.
2. megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator according to claim 1 is characterized in that, described rotor shaft (15) and to decide main shaft (14) all are taper hollow shafts, and the tapering of described taper hollow shaft is 0.35-0.40.
3. megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator according to claim 2 is characterized in that, described rotor shaft (15) and the center line of deciding main shaft (14) depart from 2-7 ° at an end that is connected wheel hub on respect to horizontal alignment.
4. megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator according to claim 1 is characterized in that, the reinforcement gusset central position of described rotor field spider inside has annular through-hole.
5. megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator according to claim 1 is characterized in that, radiating fin (2) is housed on the described stator cage (1).
6. megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator according to claim 1, it is characterized in that, brake disc (10) is installed on the described rotor shaft (15), manual brake mechanism (11) is installed on the described rear end cover (9) and is connected hydraulic pressure lock (16) initiatively on the described brake disc (10).
7. megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator according to claim 1 is characterized in that, describedly decides to be equipped with on the main shaft (14) lightning protection carbon brush (6).
8. megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator according to claim 1 is characterized in that, the rainproof groove of two rings is housed: interior rainproof groove and outer rainproof groove on described front cover (5).
9. megawatt-stage direct-drive low-speed permanent-magnet wind-driven generator according to claim 1 is characterized in that described fore bearing (13) is the aligning roller bearing, and described rear bearing (12) is a single row roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202140687U CN201739086U (en) | 2010-06-03 | 2010-06-03 | Megawatt direct-drive low-speed permanent magnet wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202140687U CN201739086U (en) | 2010-06-03 | 2010-06-03 | Megawatt direct-drive low-speed permanent magnet wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739086U true CN201739086U (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202140687U Expired - Lifetime CN201739086U (en) | 2010-06-03 | 2010-06-03 | Megawatt direct-drive low-speed permanent magnet wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739086U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195423A (en) * | 2011-05-20 | 2011-09-21 | 国电联合动力技术有限公司 | Double-stator permanent magnetic direct-driven generator supported by fixed axles |
| CN102270900A (en) * | 2010-06-03 | 2011-12-07 | 北京天道新源风电科技股份有限公司 | Megawatt direct drive type low-speed permanent magnet wind-driven generator |
| CN106640531A (en) * | 2016-11-24 | 2017-05-10 | 重集团大连设计研究院有限公司 | Megawatt-grade draught fan with direct drive structure |
| CN109256897A (en) * | 2018-11-05 | 2019-01-22 | 大庆市华禹石油机械制造有限公司 | A kind of motor rotor upper lever hand arrestment mechanism |
| CN110529346A (en) * | 2019-09-02 | 2019-12-03 | 东方电气集团东方电机有限公司 | A kind of big MW grades of low-speed direct drivings wind-driven generator shafting structure |
-
2010
- 2010-06-03 CN CN2010202140687U patent/CN201739086U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102270900A (en) * | 2010-06-03 | 2011-12-07 | 北京天道新源风电科技股份有限公司 | Megawatt direct drive type low-speed permanent magnet wind-driven generator |
| CN102195423A (en) * | 2011-05-20 | 2011-09-21 | 国电联合动力技术有限公司 | Double-stator permanent magnetic direct-driven generator supported by fixed axles |
| CN106640531A (en) * | 2016-11-24 | 2017-05-10 | 重集团大连设计研究院有限公司 | Megawatt-grade draught fan with direct drive structure |
| CN109256897A (en) * | 2018-11-05 | 2019-01-22 | 大庆市华禹石油机械制造有限公司 | A kind of motor rotor upper lever hand arrestment mechanism |
| CN110529346A (en) * | 2019-09-02 | 2019-12-03 | 东方电气集团东方电机有限公司 | A kind of big MW grades of low-speed direct drivings wind-driven generator shafting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lu Zhiyong Inventor before: Lu Zhiyong Inventor before: Wei Bing Inventor before: Qin Yuan Inventor before: Xu Ming Inventor before: Ding Yuan |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151110 Address after: 100102 Beijing City, Chaoyang District Wangjing science and Technology Park Business Center Pohang Hongtai street A block 7 layer Patentee after: GEZHOUBA ENERGY HEAVY INDUSTRY CO., LTD. Address before: 100083 A, block 1101, Zhongguancun energy and Safety Science Park, Qinghua East Road, Beijing, Haidian District Patentee before: Beijing Tendo Wind Power Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |