CN202789331U - Megawatt direct-driven wind generating set - Google Patents

Megawatt direct-driven wind generating set Download PDF

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Publication number
CN202789331U
CN202789331U CN2012204823536U CN201220482353U CN202789331U CN 202789331 U CN202789331 U CN 202789331U CN 2012204823536 U CN2012204823536 U CN 2012204823536U CN 201220482353 U CN201220482353 U CN 201220482353U CN 202789331 U CN202789331 U CN 202789331U
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CN
China
Prior art keywords
unit
dead axle
megawatt
power generating
wind power
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CN2012204823536U
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Chinese (zh)
Inventor
徐安军
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广西银河风力发电有限公司
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Priority to CN2012204823536U priority Critical patent/CN202789331U/en
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Publication of CN202789331U publication Critical patent/CN202789331U/en

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    • Y02E10/721
    • Y02E10/723
    • Y02E10/725

Abstract

The utility model discloses a megawatt direct-driven wind generating set which comprises a cabin unit, a wind wheel unit, a generator unit and a tower cylinder unit. The cabin unit is connected with the tower cylinder unit, and the generator unit comprises a movable shaft, a stationary shaft, a front bearing, a rear bearing, a rotor and a stator. The movable shaft is supported outside the front section of the stationary shaft through the front bearing and the rear bearing, the rotor is sleeved on the movable shaft and fixedly connected with the movable shaft, the stator is sleeved on the rear section of the stationary shaft and fixedly connected with the stationary shaft, and an air gap is reserved between the rotor and the stator. The front end of the movable shaft of the generator unit is connected with the wind wheel unit, while the rear end of the stationary shaft is connected with the cabin unit. According to the megawatt direct-driven wind generating set provided by the utility model, with the adoption of combination of the movable shaft and the stationary shaft, the movable shaft is sleeved outside the stationary shaft and supported by the front and rear bearings, so that the stress state of the movable shaft is effectively improved. The megawatt direct-driven wind generating set is reliable in operation, uniform in load of the movable shaft, and high in strength of the generator.

Description

A kind of megawatt-stage direct-drive type wind power generating set

Technical field

The utility model relates to technical field of wind power generation, relates to a kind of MW class wind turbine group, particularly, relates to a kind of megawatt-stage direct-drive type wind power generating set.

Background technique

Wind energy more and more is subject to countries in the world and payes attention to as a kind of clean reproducible energy.The Wind Energy In China reserves are very huge, distribution is wide general.Nearly ten years, the wind-power electricity generation of China progressively developed into the most competitive alternative energy source of conventional energy resource.

Wind-driven generator is to utilize wind energy to drive the wind wheel rotation, and wind wheel drives the magnetic line of force that produces on main shaft rotation and the cutting stator, thereby generation current generates electricity in coil winding.At present at home and abroad the wind power generating set on the market mainly is to be main by driving the generator generating after the speed-change gear box speedup, because the speed-change gear box complex structure is with high costs, and rate of fault is high, causes the wind power generating set Frequent Troubles, and it is unreliable to move.Along with the development of wind power technology, the direct-driving type wind power generation unit has appearred recent years.Direct-driving type wind-powered electricity generation unit directly drives the generating of generator shaft cutting magnetic line by wind wheel, and is connected to the grid by full power convertor, is the friendly type unit of a kind of electrical network.But because wind speed round is very low, cause the volume of direct-driving type generator very huge, this intensity to generator, manufacturability, motor radiating, maintenance and functional reliability etc. aspect has all proposed very high requirement.And mostly directly driving in the market generator is the single-bearing form, bearing is required height, and cost is higher, and main shaft (moving axis) stand under load is inhomogeneous.

The model utility content

Main purpose of the present utility model is to provide a kind of reliable, the moving axis stand under load is more even and generator intensity is high megawatt-stage direct-drive type wind power generating set.

To achieve these goals, the utility model adopts following technological scheme:

A kind of megawatt-stage direct-drive type wind power generating set, comprise cabin unit, wind wheel unit, generator unit and tower cylinder unit, described cabin unit is connected with tower cylinder unit, described generator unit comprises: moving axis, dead axle, fore bearing, rear bearing, rotor and stator, wherein: moving axis is supported on the dead axle leading portion outside by fore bearing and rear bearing, rotor is enclosed within on the moving axis and with moving axis and is fixedly connected with, and stator sleeve is fixedly connected with at the dead axle back segment and with dead axle, leaves air gap between rotor and the stator; The moving axis front end of described generator unit is connected with the wind wheel unit, and the dead axle rear end is connected with cabin unit.

Further, described stator comprises stator support, be installed in the iron core on the stator support and be fixed in winding on the iron core, and described rotor comprises rotor field spider and be installed in magnet on the rotor field spider that described magnet is multiple permanent magnet body or multistage excitation body.

Further, described dead axle comprises two sections of front dead axle and rear dead axles, and described front dead axle and rear dead axle are fastenedly connected by the bolt group.

Further, described dead axle leading portion is taper, and accordingly, described moving axis is taper.

Further, described fore bearing is roller bearing, and described rear bearing is double-row conical bearing.

Further, described generator unit also comprises brake system, and described brake system comprises and is fixed on the braking clamp on the dead axle and is fixed on brake disc on the moving axis, the corresponding setting with brake disc of described braking clamp.

Further, described generator unit also comprises constituent, and described constituent comprises the cooling pipe that is arranged between stator support and the iron core, and the water tank that is communicated with cooling pipe.

Further, described cabin unit comprises: mainframe, engine room cover, yaw system, weather station, control system, wherein: described mainframe is connected with tower cylinder unit by yaw system, and described mainframe also is connected by the interface of bolt with the dead axle rear end of generator unit; Described engine room cover is connected with tower cylinder unit, and described mainframe and set-up of control system are in engine room cover, and the weather station is connected to the engine room cover outside, and control system is connected respectively with weather station and yaw system.

Further, described wind wheel unit comprises wheel hub and is arranged on many pieces of blades on the wheel hub, and described every piece of blade is provided with independently pitch-controlled system, and described pitch-controlled system is connected with control system; And described wheel hub is connected by the interface of bolt with the moving axis front end of generator unit.

Further, also be covered with air guide sleeve in the wheel hub outside of described wind wheel unit, the engine room cover of described air guide sleeve and cabin unit links into an integrated entity.

The utility model is owing to adopt above technological scheme, and it has following beneficial effect:

1, in generator unit, adopt moving axis to add the combining form of dead axle, moving axis is placed in the dead axle outside, and is supported by forward and backward duplex bearing, has effectively improved the moving axis stress, makes stand under load more reasonable, has improved electric generator structure intensity and reliability.

2, in generator unit, adopted (multistage number of pole-pairs) multistage magnet rotor, generator can reach rated power under the slow-speed of revolution.Generator can directly link to each other with wind wheel, has therefore saved the gear-box in traditional wind power equipment, has alleviated blower fan volume and weight, has removed cost and the maintenance program of gear-box from, has reduced the unit cost.Can also reduce simultaneously noise, reduce blower fan overall failure rate, and simplify blower fan structure.

3, in generator unit, adopt the dead axle of segmentation, can solve the long problem of dead axle length.

4, in generator unit, adopt brake system, can when need to shutting down or keep in repair, blower fan can in time brake.

5, in generator unit, adopt the type of cooling of water-cooled, cooling is reliable, and efficient is high, can effectively reduce the generator operation temperature, and good heat dissipation effect guarantees that generator normally moves.

6, blower fan adopts engine room cover that integral body is sealed, and sealing is reliable, can prevent effectively that dust storm, rainwater etc. from entering, and has improved blower fan security level and blower fan reliability.

Below by drawings and Examples, the technical solution of the utility model is described in further detail.

Description of drawings

Fig. 1 is the overall structure schematic representation of the utility model megawatt-stage direct-drive type wind power generating set;

Fig. 2 is the structural representation of generator unit among Fig. 1.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in restriction the utility model.

As shown in Figure 1, a kind of megawatt-stage direct-drive type wind power generating set of the present utility model comprises generator unit, cabin unit, wind wheel unit and tower cylinder unit 9.

As shown in Figure 2, in above-mentioned wind power generating set, generator unit comprises: moving axis 207, dead axle, fore bearing 208, rear bearing 209, stator and rotor, and wherein: dead axle comprises 202 two sections of front dead axle 201 and rear dead axles, front dead axle 201 is fastenedly connected by the bolt group with rear dead axle 202.Stator comprises stator support 205, be installed in the iron core on the stator support 205 and be fixed in winding 203 on the iron core, and rotor comprises rotor field spider 206 and be installed in magnet 211 on the rotor field spider 206 that magnet 211 is multiple permanent magnet body or multistage excitation body.Generator unit stator is used for being connected with electrical network by full power convertor.

In above-mentioned generator unit, moving axis 207 is supported on front dead axle 201 outsides by fore bearing 208 and rear bearing 209, rotor is enclosed within on the moving axis 207 and with moving axis 207 by rotor field spider 206 and is fixedly connected with, stator is enclosed within on the rear dead axle 202 and with rear dead axle 202 by stator support 205 and is fixedly connected with, and leaves air gap between rotor and the stator.

In above-mentioned generator unit, dead axle leading portion (front dead axle 201) is taper, and accordingly, moving axis 207 is taper.

In above-mentioned generator unit, front and back bearings combination pairing pattern can make up according to the stand under load situation, and preferably, fore bearing 208 is roller bearing, and rear bearing 209 is double-row conical bearing.

In above-mentioned generator unit, also comprise protection end cap 204, protection end cap 204 is located at the iron core rear side, and protection end cap 204 is connected with rotor field spider 206 rear ends.Protection end cap 204 is for the protection of the generator unit stator part.

In above-mentioned generator unit, also comprise brake system 210, brake system 210 comprises and is fixed on the braking clamp on the dead axle and is fixed on brake disc on the moving axis 207, the corresponding setting with brake disc of braking clamp.

In above-mentioned generator unit, also comprise constituent, constituent comprises the cooling pipe 213 that is arranged between stator support 205 and the iron core, and the water tank 212 that is communicated with cooling pipe 213.

As shown in Figure 1, in above-mentioned wind power generating set, cabin unit comprises: mainframe 3, engine room cover 1, yaw system 8, weather station 2, control system 10, wherein: mainframe 3 is connected with tower cylinder unit 9 by yaw system 8, and mainframe 3 also connecing of the dead axle rear end by bolt and generator unit 215 be connected (as shown in Figure 2); Engine room cover 1 is connected with tower cylinder unit 9, and mainframe 3 and control system 10 are arranged in the engine room cover 1, and weather station 2 is connected to engine room cover 1 outside, and control system 10 is connected respectively with weather station 2 and yaw system 8.3 pairs of units of mainframe are played a supporting role.Yaw system 8 can drive cabin box haul deflection by driftage bearing and yaw motor.But weather station 2 measuring wind wind directions, and signal passed to control system 10, control system 10 can be controlled yaw system 8 according to meteorologic signal.

As shown in Figure 1, in above-mentioned wind power generating set, the wind wheel unit comprises wheel hub 5 and is arranged on many pieces of blades 4 on the wheel hub 5, and every piece of blade 4 is provided with independently pitch-controlled system 6, and pitch-controlled system 6 is connected with control system 10; And connecing of moving axis 207 front ends of wheel hub 5 by bolt and generator unit 214 is connected (as shown in Figure 2).Wherein, pitch-controlled system 6 is controlled power of fan by control blade slurry elongation.

As shown in Figure 1, also be covered with air guide sleeve 7 in wheel hub 5 outsides of wind wheel unit, air guide sleeve 7 links into an integrated entity with the engine room cover 1 of cabin unit.

It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although with reference to previous embodiment the utility model is had been described in detail, for a person skilled in the art, it still can be made amendment to the technological scheme that previous embodiment is put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (10)

1. a megawatt-stage direct-drive type wind power generating set comprises cabin unit, wind wheel unit, generator unit and tower cylinder unit, and described cabin unit is connected with tower cylinder unit, it is characterized in that:
Described generator unit comprises: moving axis, dead axle, fore bearing, rear bearing, rotor and stator, wherein: moving axis is supported on the dead axle leading portion outside by fore bearing and rear bearing, rotor is enclosed within on the moving axis and with moving axis and is fixedly connected with, stator sleeve is fixedly connected with at the dead axle back segment and with dead axle, leaves air gap between rotor and the stator;
The moving axis front end of described generator unit is connected with the wind wheel unit, and the dead axle rear end is connected with cabin unit.
2. megawatt-stage direct-drive type wind power generating set according to claim 1, it is characterized in that, described stator comprises stator support, be installed in the iron core on the stator support and be fixed in winding on the iron core, described rotor comprises rotor field spider and is installed in magnet on the rotor field spider that described magnet is multiple permanent magnet body or multistage excitation body.
3. megawatt-stage direct-drive type wind power generating set according to claim 1 is characterized in that, described dead axle comprises two sections of front dead axle and rear dead axles, and described front dead axle and rear dead axle are fastenedly connected by the bolt group.
4. megawatt-stage direct-drive type wind power generating set according to claim 1 is characterized in that, described dead axle leading portion is taper, and accordingly, described moving axis is taper.
5. megawatt-stage direct-drive type wind power generating set according to claim 1 is characterized in that, described fore bearing is roller bearing, and described rear bearing is double-row conical bearing.
6. megawatt-stage direct-drive type wind power generating set according to claim 1, it is characterized in that, described generator unit also comprises brake system, and described brake system comprises and is fixed on the braking clamp on the dead axle and is fixed on brake disc on the moving axis, the corresponding setting with brake disc of described braking clamp.
7. megawatt-stage direct-drive type wind power generating set according to claim 2, it is characterized in that, described generator unit also comprises constituent, and described constituent comprises the cooling pipe that is arranged between stator support and the iron core, and the water tank that is communicated with cooling pipe.
8. each described megawatt-stage direct-drive type wind power generating set according to claim 1-7 is characterized in that described cabin unit comprises: mainframe, engine room cover, yaw system, weather station, control system, wherein:
Described mainframe is connected with tower cylinder unit by yaw system, and described mainframe also is connected by the interface of bolt with the dead axle rear end of generator unit;
Described engine room cover is connected with tower cylinder unit, and described mainframe and set-up of control system are in engine room cover, and the weather station is connected to the engine room cover outside, and control system is connected respectively with weather station and yaw system.
9. megawatt-stage direct-drive type wind power generating set according to claim 8, it is characterized in that, described wind wheel unit comprises wheel hub and is arranged on many pieces of blades on the wheel hub, and described every piece of blade is provided with independently pitch-controlled system, and described pitch-controlled system is connected with control system;
And described wheel hub is connected by the interface of bolt with the moving axis front end of generator unit.
10. megawatt-stage direct-drive type wind power generating set according to claim 9 is characterized in that, also is covered with air guide sleeve in the wheel hub outside of described wind wheel unit, and the engine room cover of described air guide sleeve and cabin unit links into an integrated entity.
CN2012204823536U 2012-09-19 2012-09-19 Megawatt direct-driven wind generating set CN202789331U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104989601A (en) * 2015-07-27 2015-10-21 北京三力新能科技有限公司 Main bearing assembly of wind generating set
CN105298754A (en) * 2015-11-13 2016-02-03 北京金风科创风电设备有限公司 Wind driven generator and wind generating set
CN106150918A (en) * 2016-08-26 2016-11-23 刘泉 A kind of direct-drive aerogenerator group
CN106321364A (en) * 2016-11-08 2017-01-11 常州神力电机股份有限公司 Wind driven generation unit with hub and generator outer rotor combined structure
CN109469591A (en) * 2017-09-07 2019-03-15 新疆金风科技股份有限公司 Wind power generating set transmission mechanism, drive method and wind power generating set
CN109469582A (en) * 2017-09-07 2019-03-15 新疆金风科技股份有限公司 Wind generating set pitch control driving mechanism, variable pitch method and wind power generating set
CN110195685A (en) * 2019-05-27 2019-09-03 上海电气风电集团有限公司 Brake system and outer rotor type direct drive wind power generating set

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104989601A (en) * 2015-07-27 2015-10-21 北京三力新能科技有限公司 Main bearing assembly of wind generating set
CN105298754A (en) * 2015-11-13 2016-02-03 北京金风科创风电设备有限公司 Wind driven generator and wind generating set
CN105298754B (en) * 2015-11-13 2019-02-15 北京金风科创风电设备有限公司 Wind-driven generator and wind power generating set
CN106150918A (en) * 2016-08-26 2016-11-23 刘泉 A kind of direct-drive aerogenerator group
CN106321364A (en) * 2016-11-08 2017-01-11 常州神力电机股份有限公司 Wind driven generation unit with hub and generator outer rotor combined structure
CN109469591A (en) * 2017-09-07 2019-03-15 新疆金风科技股份有限公司 Wind power generating set transmission mechanism, drive method and wind power generating set
CN109469582A (en) * 2017-09-07 2019-03-15 新疆金风科技股份有限公司 Wind generating set pitch control driving mechanism, variable pitch method and wind power generating set
CN109469591B (en) * 2017-09-07 2020-05-19 新疆金风科技股份有限公司 Transmission mechanism and transmission method of wind generating set and wind generating set
CN110195685A (en) * 2019-05-27 2019-09-03 上海电气风电集团有限公司 Brake system and outer rotor type direct drive wind power generating set

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C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20130425

Address after: 536000 building, information center building, Yinhe Software Park, Tibet Road, the Guangxi Zhuang Autonomous Region, Beihai, four

Patentee after: Guangxi Galaxy Wind Power Generation Co.,Ltd.

Patentee after: WEIHAI YINHE CHANGZHENG WIND POWER EQUIPMENT CO., LTD.

Address before: 536000 building, information center building, Yinhe Software Park, Tibet Road, the Guangxi Zhuang Autonomous Region, Beihai, four

Patentee before: Guangxi Galaxy Wind Power Generation Co.,Ltd.

C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: WEIHAI YINHE CHANGZHENG WIND POWER GENERATING EQUI

Effective date: 20130425

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130313

Termination date: 20170919