CN102628428A - High power wind generating set - Google Patents
High power wind generating set Download PDFInfo
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- CN102628428A CN102628428A CN2012101237208A CN201210123720A CN102628428A CN 102628428 A CN102628428 A CN 102628428A CN 2012101237208 A CN2012101237208 A CN 2012101237208A CN 201210123720 A CN201210123720 A CN 201210123720A CN 102628428 A CN102628428 A CN 102628428A
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- bearing
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- main shaft
- generating set
- wind
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a high power wind generating set, comprising a generating set, an engine seat, a rear bearing, a wind wheel, a front bearing, a nose gear case and a main shaft, the engine seat is installed on a tower, a hollow shaft is fixedly connected with a front end of the engine seat, a front end of the hollow shaft is fixedly connected with a nose gear case; the rear bearing and the fore bearing are respectively arranged on the rear and front of the hollow shaft; the wind wheel is installed on the rear bearing and front bearing, the front end of the wind wheel is connected with an input shaft of the nose gear case; the main shaft is arranged inside the hollow shaft, the front end of the main shaft is connected with an output shaft of the nose gear case; the rear-end of the main shaft is connected with the generating set in a cabin. The generating set in the invention shortens the length of transmitted chains, reduces a whole weight of the set, prolongs service lives of a main shaft bearing and the whole set and lowers a production cost of the wind generating set, on the premise of ensuring stable and reliable operation performance. The generating set greatly improves a product competitiveness in markets
Description
Technical field
The present invention relates to wind power generating set, specifically is a kind of Transmitted chains form of high-power wind-driven generator group, particularly this unit.
Background technique
Along with the new energy application and development,, in electrical network, occupied increasing proportion as exploitation wind energy early in the new energy.Simultaneously; Increasing MANUFACTURER has developed various wind power generating set, in order to strengthen the competitive ability of its product on market, from the consideration of various component difference in functionalitys; To the improvement of Transmitted chains design, all become the different Considerations of wind power generating set design improvement.
At present, the Transmitted chains of non-direct drive type wind power generating set generally adopts the form of wind wheel+main shaft+gear-box+generator+frequency variator, under this Transmitted chains form, and the supporting structure of main shaft or be some supports, or be 2 supports, or be supported at three point.
Support if adopt a bit; Guaranteeing have enough load-carrying abilities to bear under the prerequisite of large wind load; The size of main shaft and bearing certainly will will increase, and this not only causes the overall weight of wind power generating set and manufacture cost to increase, and has directly influenced the market competitiveness of wind power generating set.And; Along with the change of wind power generating set single-machine capacity is big; Components supplying merchant's throughput has also reached the limit gradually, and the wind power generating set of the above power level of 10MW is difficult to choose suitable main shaft bearing, has brought very big challenge for the design of main shaft bearing.
If adopt supported at three point, gear-box will bear worst wind load, and the difficult design of this teeth roller box is heavy.
Referring to Fig. 1: if adopt 2 supports; Main shaft bearing (being fore bearing A, rear bearing B) has born the wind load of most of complicacy, except that moment of torsion; Basically do not have other load can be delivered in the gear-box C of Transmitted chains, brought very big facility for the design of gear-box; But this supporting structure also has the shortcoming of himself, and is longer such as Transmitted chains, except that main shaft D length, also will consider the length of the coupling E that main shaft D is connected with gear-box C.Therefore, this supporting structure is comparatively common in low power wind power generating set, and in powerful wind power generating set, long Transmitted chains then means bigger volume, and higher manufacture cost; And the moment of flexure that the head weight of wind power generating set produces on main shaft bearing is testing the radial load ability to bear of main shaft bearing greatly.Referring to Fig. 2: the wind wheel center G that supposes the wind power generating set head is L1 apart from the distance of fore bearing A; Distance between fore bearing A and the rear bearing B is L2, and the radial load that fore bearing A affords is F1, and the radial load that rear bearing B affords is F2; In such cases; Radial load F1=G* (L1+L2)/L2 that fore bearing A affords can be known F1＞G by this formula.Therefore, the moment of flexure that the wind wheel center of gravity of wind power generating set head produces fore bearing will influence the radial load of fore bearing, and the big young pathbreaker of fore bearing radial load directly influences the life-span of fore bearing.
In sum; The Transmitted chains form of existing wind power generating set can only be fit to low power wind power generating set, and can't be fit to the application of high-power wind-driven generator group; Development along with the wind-power electricity generation cause; The high-power wind-driven generator group has become the trend of market development, how is guaranteeing that the high-power wind-driven generator group is stable, under the prerequisite of reliable operation, is reducing the weight and the manufacture cost of wind power generating set; Promote the competitive ability of product in market, become the difficult problem that wind power generating set MANUFACTURER needs to be resolved hurrily.
Summary of the invention
The objective of the invention is to: to the deficiency of above-mentioned existing wind power generating set; Independent research is a kind of under the prerequisite of stable, reliable operation, can effectively reduce the high-power wind-driven generator group of weight and manufacture cost, and this unit is through improving the Transmitted chains form; Solve head weight and on main shaft bearing, produced the excessive difficult problem of moment of flexure; On the basis of existing bearing manufacturing technology, improved the radial load that main shaft bearing affords, prolonged the working life of main shaft bearing.
The present invention realizes above-mentioned technical purpose; The technological scheme that adopts is: a kind of high-power wind-driven generator group; Comprise electricity generating device, support, rear bearing, wind wheel, fore bearing, head gear-box and main shaft; Said support is assemblied on the tower tube, and the front end of said support is fixedly connected with hollow shaft, and the front end of hollow shaft is fixedly connected with the head gear-box; Said rear bearing and fore bearing are arranged in the rear portion and the front portion of hollow shaft; Said wind wheel is assemblied on rear bearing and the fore bearing, and the front end of wind wheel is connected with the input shaft of head gear-box; Said main shaft is through in the hollow shaft, and the front end of main shaft is connected with the output shaft of head gear-box, and rear-end of spindle is connected with electricity generating device in the cabin.
The input shaft of the front end of said wind wheel and head gear-box is for flexibly connecting.
Said electricity generating device is made up of cabin gear-box and generator.
Said cabin gear-box and generator are integrated morphology.
Said cabin gear-box and generator are for dividing body structure, and the two connects through coupling.
The lubrication system of said cabin gear-box is independent of the lubrication system of head gear-box.
Said electricity generating device is a generator.
The invention has the beneficial effects as follows: the wind power generating set of said structure, guaranteeing to stablize, under the prerequisite of reliable operation performance, wind wheel directly be assemblied on fore bearing and the rear bearing; The wind wheel center of gravity has moved on between fore bearing and the rear bearing, has shortened the length of Transmitted chains, has alleviated the overall weight of unit; Solve head weight and on main shaft bearing, produced the excessive difficult problem of moment of flexure; On the basis of existing bearing manufacturing technology, improved the radial load that fore bearing and rear bearing receive greatly, prolonged the working life of main shaft bearing and whole unit; Reduce the manufacture cost of wind power generating set, promoted the competitive ability of product in market greatly.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is the structural representation of traditional wind group.
Fig. 2 is the shaft strength schematic representation among Fig. 1.
Fig. 3 is a kind of structural representation of the present invention.
Fig. 4 is the shaft strength schematic representation among Fig. 3.
Fig. 5 is a kind of structural representation of electricity generating device among Fig. 3.
Fig. 6 is the another kind of structural representation of electricity generating device among Fig. 3.
Fig. 7 is another structural representation of electricity generating device among Fig. 3.
Embodiment
Referring to Fig. 3 and Fig. 5: the present invention includes electricity generating device 1, support 2, rear bearing 4, wind wheel 5, fore bearing 6, head gear-box 7 and main shaft 8.Wherein, support 2 is assemblied on the tower tube, and the front end of support 2 is fixedly connected with hollow shaft 3, and the front end of hollow shaft 3 is fixedly connected with head gear-box 7.Rear bearing 4 and fore bearing 6 are arranged in the rear portion and the front portion of hollow shaft 3.Wind wheel 5 directly is assemblied on rear bearing 4 and the fore bearing 6, and the input shaft of the front end of wind wheel 5 and head gear-box 7 flexibly connects.Main shaft 8 is through in the hollow shaft 3, and the front end of main shaft 8 is connected with the output shaft of head gear-box 7, guarantees 8 transmitting torques of main shaft, and main shaft 8 rear ends are connected with electricity generating device 1 in the cabin.Electricity generating device 1 is made up of cabin gear-box 1.2 and generator 1.1; The two is an integrated morphology, and under the speedup effect of cabin gear-box 1.2, the nominal torque that main shaft 8 transmits can obtain very big decline; This has played great role (in the wind power generating set of 10MW and above grade for reducing the main shaft manufacture cost; The nominal torque that wind wheel produces will be more than 10000KNm, and so no matter big nominal torque adopts the casting main shaft; Still adopt and forge main shaft, under the situation that guarantees quality of product, all need pay expensive manufacture cost).
Above-mentioned wind power generating set is powerful high-speed wind power generator set; The cabin gear-box 1.2 that is positioned at the cabin adopts the different lubrication system of two covers respectively with the head gear-box 7 that is positioned at the head position; The lubrication system of the two is separate, can overcome the flimsy defective of box bearing of high-speed wind power generator set like this.
Referring to Fig. 4: the fore bearing 6 and the rear bearing 4 of above-mentioned wind power generating set is arranged in the two ends of wind wheel center of gravity G '; Fore bearing 6 with the radial load that rear bearing 4 affords is; False wind wheel center of gravity G ' is L3 apart from the distance of fore bearing 6; Fore bearing 6 is L4 apart from the distance of rear bearing 4, and the radial load that fore bearing 6 receives is F3, and the radial load that rear bearing 4 receives is F4.Through calculating, the radial load F3=G ' * L4/ (L3+L4) that receives of fore bearing 6 can know F3＜G ' by this formula in such cases.Therefore, the present invention has not only shortened the length of Transmitted chains, and has effectively improved the radial load that fore bearing receives (in like manner, also having improved the radial load that rear bearing receives), has prolonged the working life of main shaft bearing.
Embodiment 2
Referring to Fig. 6: other structure of present embodiment is identical with embodiment 1, and difference is, changes cabin gear-box that constitutes electricity generating device 1 1.2 and generator 1.1 into the branch body structure, and the two links together through coupling 1.3.
Referring to Fig. 7: other structure of present embodiment is identical with embodiment 1, and difference is that the electricity generating device 1 that is arranged in the cabin is generator 1.1.The wind power generating set of this structure is powerful semi-direct driving wind power generator group, owing to have only a gear-box, promptly the head gear-box 7, non-gear box in the cabin, therefore, the lubrication system of also just having only a cover to lubricate as head gear-box 7.Present embodiment is compared embodiment 1 and embodiment 2, and wind power generating set is when satisfying the design of transmission and load, and structure is more compact, and is in light weight.
Claims (7)
1. high-power wind-driven generator group; Comprise electricity generating device (1), support (2), rear bearing (4), wind wheel (5), fore bearing (6), head gear-box (7) and main shaft (8); Said support (2) is assemblied on the tower tube; It is characterized in that: the front end of said support (2) is fixedly connected with hollow shaft (3), and the front end of hollow shaft (3) is fixedly connected with head gear-box (7); Said rear bearing (4) and fore bearing (6) are arranged in the rear portion and the front portion of hollow shaft (3); Said wind wheel (5) is assemblied on rear bearing (4) and the fore bearing (6), and the front end of wind wheel (5) is connected with the input shaft of head gear-box (7); Said main shaft (8) is through in the hollow shaft (3), and the front end of main shaft (8) is connected with the output shaft of head gear-box (7), and main shaft (8) rear end is connected with electricity generating device (1) in the cabin.
2. according to the said high-power wind-driven generator group of claim 1, it is characterized in that: the input shaft of the front end of said wind wheel (5) and head gear-box (7) is for flexibly connecting.
3. according to the said high-power wind-driven generator group of claim 1, it is characterized in that: said electricity generating device (1) is made up of cabin gear-box (1.2) and generator (1.1).
4. according to the said high-power wind-driven generator group of claim 3, it is characterized in that: said cabin gear-box (1.2) and generator (1.1) are integrated morphology.
5. according to the said high-power wind-driven generator group of claim 3, it is characterized in that: said cabin gear-box (1.2) and generator (1.1) are for dividing body structure, and the two connects through coupling (1.3).
6. according to the said high-power wind-driven generator group of claim 3, it is characterized in that: the lubrication system of said cabin gear-box (1.2) is independent of the lubrication system of head gear-box (7).
7. according to the said high-power wind-driven generator group of claim 1, it is characterized in that: said electricity generating device (1) is a generator (1.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101237208A CN102628428A (en) | 2012-04-25 | 2012-04-25 | High power wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101237208A CN102628428A (en) | 2012-04-25 | 2012-04-25 | High power wind generating set |
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| CN102628428A true CN102628428A (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101237208A Pending CN102628428A (en) | 2012-04-25 | 2012-04-25 | High power wind generating set |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481821A (en) * | 2014-10-09 | 2015-04-01 | 东方电气集团东方汽轮机有限公司 | Wind turbine generator and transmission structure thereof |
| CN105074204A (en) * | 2013-04-03 | 2015-11-18 | 斯凯孚公司 | A hub and bearing system and a turbine comprising the hub and bearing system |
| TWI568929B (en) * | 2014-06-10 | 2017-02-01 | Hitachi Ltd | Wind power plant |
| CN107013595A (en) * | 2017-05-23 | 2017-08-04 | 北京三力新能科技有限公司 | A kind of wind driven generation set main shaft assembly and its assembly method |
| CN111561427A (en) * | 2020-06-12 | 2020-08-21 | 天津瑞能电气有限公司 | Electric system of gear box transmission chain cleaning station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6459165B1 (en) * | 1999-04-12 | 2002-10-01 | Winergy Ag | Drive for a windmill |
| DE102007042770A1 (en) * | 2007-09-07 | 2009-03-12 | Schaeffler Kg | Rotor bearing for a wind turbine |
| CN102089515A (en) * | 2008-07-07 | 2011-06-08 | 西门子公司 | Wind turbine comprising a main bearing and method for replacement of the main bearing |
| CN102124218A (en) * | 2008-07-24 | 2011-07-13 | 安德烈斯·索纳加尔格 | Wind power generator |
-
2012
- 2012-04-25 CN CN2012101237208A patent/CN102628428A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6459165B1 (en) * | 1999-04-12 | 2002-10-01 | Winergy Ag | Drive for a windmill |
| DE102007042770A1 (en) * | 2007-09-07 | 2009-03-12 | Schaeffler Kg | Rotor bearing for a wind turbine |
| CN102089515A (en) * | 2008-07-07 | 2011-06-08 | 西门子公司 | Wind turbine comprising a main bearing and method for replacement of the main bearing |
| CN102124218A (en) * | 2008-07-24 | 2011-07-13 | 安德烈斯·索纳加尔格 | Wind power generator |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105074204A (en) * | 2013-04-03 | 2015-11-18 | 斯凯孚公司 | A hub and bearing system and a turbine comprising the hub and bearing system |
| CN105264223A (en) * | 2013-04-03 | 2016-01-20 | 斯凯孚公司 | Bearing construction for a turbine blade |
| CN105074204B (en) * | 2013-04-03 | 2018-09-14 | 斯凯孚公司 | Wheel hub and bearing arrangement and turbine including this wheel hub and bearing arrangement |
| TWI568929B (en) * | 2014-06-10 | 2017-02-01 | Hitachi Ltd | Wind power plant |
| CN104481821A (en) * | 2014-10-09 | 2015-04-01 | 东方电气集团东方汽轮机有限公司 | Wind turbine generator and transmission structure thereof |
| CN107013595A (en) * | 2017-05-23 | 2017-08-04 | 北京三力新能科技有限公司 | A kind of wind driven generation set main shaft assembly and its assembly method |
| CN111561427A (en) * | 2020-06-12 | 2020-08-21 | 天津瑞能电气有限公司 | Electric system of gear box transmission chain cleaning station |
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Application publication date: 20120808 |