CN102606420B - Large wind driven power generator and sectional type blade thereof - Google Patents
Large wind driven power generator and sectional type blade thereof Download PDFInfo
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- CN102606420B CN102606420B CN201210111340.2A CN201210111340A CN102606420B CN 102606420 B CN102606420 B CN 102606420B CN 201210111340 A CN201210111340 A CN 201210111340A CN 102606420 B CN102606420 B CN 102606420B
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- blade
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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
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Abstract
The invention discloses a sectional type blade for a large wind driven power generator. The sectional type blade comprises a blade root and a blade tip connected with the blade root, wherein the blade root comprises a barrel body, a blade-shaped framework and a cover; the blade-shaped framework is arranged on the outer circumferential side of the barrel body and connected with the barrel body; and the cover is covered outside the blade-shaped framework and connected with the barrel body. Due to the structure, the sectional type blade has the advantages of convenience in manufacturing and conveying and low cost. The invention also discloses the large wind driven power generator which comprises the sectional type blade and has the same advantages. Two independent blade pitch variation control systems are adopted in the large wind driven power generator, so that the running reliability and the safety of the wind driven power generator are improved greatly due to the redundancy design.
Description
Technical field
The present invention relates to wind power generation field, particularly, relate to a kind of large-scale wind driven generator and sectional-type blade thereof.
Background technique
Wind-power electricity generation is the important form of Wind Power Utilization, and wind energy is the energy renewable, pollution-free, that energy is large, prospect is wide, and greatly developing clean energy resource is the strategic choice of countries in the world.Wind power technology equipment is the important component part of Wind Power Generation Industry, also be basis and the guarantee of Wind Power Generation Industry development, countries in the world take incentive measure to promote national wind power technology equipment industry development one after another, at present, China wind power technology equipment industry has obtained compared with great achievement, according to statistics 2010 the year end China's installed capacity of wind-driven power leap to the first in the world.
Along with wind-powered electricity generation is equipped towards large scale development, the critical component that fan blade is caught as wind energy, it manufactures and designs and is faced with increasing difficulty, at present the longest blade reaches 66.5 meters in the world, be arranged on 6MW blower fan, along with following 7MW, even blower fan more than 10MW is developed, corresponding length of blade also will reach 80 meters, even more than 100 meters.If continue to adopt the blade of prior art, can bring and comprise manufacturing process, the problem of cost of material and transport aspect.
Meanwhile, southern area of China wind-resources is carrying out deep exploitation, these regional economy prosperities, and power load is large, and wind energy density is large and electrical network is strong, does not have the grid-connected of restriction Wind Power Development and the problem such as dissolves.Wind-powered electricity generation will be changed into the development model of " concentrate+disperse ", turn to the low wind speed wind field of exploitation, and encourage to disperse access electrical network.This means, need the longer blade applications of exploitation in low wind speed area.And these regional traffic are often inconvenient, large transport of blades cost is high.
Summary of the invention
The object of the present invention is to provide the sectional-type blade of the wind-driven generator that a kind of manufacture, convenient transportation and cost are low.
Another object of the present invention is to provide a kind of wind-driven generator that above-mentioned sectional-type blade is installed.
To achieve these goals, the present invention adopts following technological scheme:
A kind of sectional-type blade of large-scale wind driven generator, comprise blade root and the blade tip with blade root fastenings, described blade root comprises cylindrical shell, leaf skeleton and covering, and described leaf skeleton is placed in cylindrical shell outer circumferential sides and is connected with cylindrical shell, and described covering covers and is overlying on outside leaf skeleton and is connected with cylindrical shell.
Further, described leaf skeleton is multiple, and on cylindrical shell excircle, along drum shaft to setting gradually, and the line on the leaf top of described multiple leaf skeletons forms smooth trailing edge.
Further, described cylindrical shell and covering all adopt metal material.
Further, described leaf skeleton is connected by welding manner with cylindrical shell, and described covering is connected with cylindrical shell and leaf skeleton by rivet, spot welding or bolt.
Further, on the cylindrical shell corresponding with described leaf skeleton inner side, have services aperture.
Further, comprise blade tip pitch-controlled system, described blade tip pitch-controlled system comprises that blade tip becomes oar driving mechanism and blade tip pitch variable bearings; Described blade tip becomes in the cylindrical shell that oar driving mechanism is arranged on blade root and is connected with blade tip pitch variable bearings.Described blade root and blade tip are rotatably connected by blade tip pitch variable bearings.
Further, the cylindrical shell of described blade root is connected with blade tip pitch variable bearings by screw.
Further, on described blade tip, be embedded with thread head with the position of blade root fastenings, blade tip is connected with blade tip pitch variable bearings by stud bolt.
A kind of large-scale wind driven generator, comprises axial fan hub, and above-mentioned sectional-type blade is installed on described axial fan hub.
Further, comprise blade root pitch-controlled system, described blade root pitch-controlled system comprises that blade root becomes oar driving mechanism and blade root pitch variable bearings; Described blade root becomes oar driving mechanism and is arranged in axial fan hub and is connected with blade root pitch variable bearings, and described axial fan hub and blade root are rotatably connected by blade root pitch variable bearings.
The present invention, by adopting technique scheme, has following beneficial effect:
1, wind-driven generator of the present invention adopts sectional-type blade form, and subsection blade is easily manufactured, convenient transport, and assembled in situ is simple; Leaf root part adopts cylindrical shell, leaf skeleton and stressed-skin construction, its middle cylinder body is supportive body, leaf skeleton also can reduce support frame material consumption in playing a supporting role, additional covering, especially the design of metal skin, in blade integral stabilized structure, leaf weight be can alleviate, manufacture, cost of transportation reduced.
2, design by the arranging structure to leaf skeleton, meet the aeroperformance requirement of blade.
3, by having services aperture on the cylindrical shell corresponding with leaf skeleton inner side, can facilitate the maintenance of blade covering, also can alleviate leaf weight simultaneously, convenient transport reduces cost.
4, because blade tip position is short and small and structure is light, by blade tip pitch-controlled system is set, can carry out segmentation to blade tip and become oar, more easily realize fast power adjusting, aerodynamic brake and shut down the operations such as maintenance.
5, large-scale wind driven generator of the present invention is owing to containing above-mentioned sectional-type blade, also there is above-mentioned beneficial effect, simultaneously, by blade tip pitch-controlled system and blade root pitch-controlled system are set in large-scale wind driven generator, two independently pitch-controlled systems can be realized Redundancy Design, greatly improve operational reliability and the Security of wind-driven generator.
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of sectional-type blade;
Fig. 2 is the leaf and root structure schematic diagram of sectional-type blade;
Fig. 3 is the tip structure schematic diagram of sectional-type blade;
Fig. 4 is the blade tip pitch-controlled system structural representation of sectional-type blade;
Fig. 5 is that the blade tip of sectional-type blade becomes oar design sketch.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
As shown in Figure 1, 2, the sectional-type blade of a kind of large-scale wind driven generator of the present invention, the blade tip 2 that comprises blade root 1 and be connected with blade root 1, by by blade section design, can solve manufacture of the prior art and transport difficult problem; Wherein blade root 1 comprises cylindrical shell 11, leaf skeleton 12 and covering 13, and leaf skeleton 12 is placed in cylindrical shell 11 outer circumferential sides and is connected with cylindrical shell 11, and covering 13 covers and is overlying on outside leaf skeleton 12 and is connected with cylindrical shell 11.By the structural design of above-mentioned leaf root part, can in the situation that ensureing blade integral stabilized structure, reduce cost of material, reduce the weight of blade, convenient transport.
In order to ensure the aeroperformance of whole blade, above-mentioned leaf skeleton 12 is multiple, axially set gradually, and the line on the leaf top of multiple leaf skeletons 12 forms smooth trailing edge on cylindrical shell 11 excircles along cylindrical shell 11.
In the above-described embodiments, can also set the material of the cylindrical shell of blade root 1 11 and covering 13, as cylindrical shell 11 and covering 13 all can adopt metal material, certainly, the material of cylindrical shell 11 and covering 13 is not limited to metal material.Blade tip 2 parts can adopt conventional epoxy resin blade or the fine blade of carbon.
In the above-described embodiments, can also set the Connecting format of each constituent element of blade root 1, as leaf skeleton 12 is connected by welding manner with cylindrical shell 11, covering 13 is connected with cylindrical shell 11 and leaf skeleton 12 by rivet, spot welding or bolt, after polishing, covering 13 surface lacquer processing, realize anticorrosion.
In order to facilitate covering 13 periodic maintenance and further to reduce the weight of blade, in above-described embodiment, on the cylindrical shell 11 corresponding with described leaf skeleton 12 inner sides, have services aperture 14.
In the above-described embodiments, consider that blade tip 2 structures are gently little, also can do further design to the function of sectional-type blade, for example, for sectional-type blade designs a blade tip pitch-controlled system, as shown in Figure 4, blade tip pitch-controlled system comprises that blade tip becomes oar driving mechanism 3 and blade tip pitch variable bearings 4; Blade tip becomes in the cylindrical shell 11 that oar driving mechanism 3 is arranged on blade root and is connected with blade tip pitch variable bearings 4.Blade root 1 is rotatably connected by blade tip pitch variable bearings 4 with blade tip 2.
Blade root 1 in above-described embodiment is rotatably connected by blade tip pitch variable bearings 4 with blade tip 2, can adopt following concrete Connecting format: the cylindrical shell 11 of blade root is connected with blade tip pitch variable bearings 4 by screw.As shown in Figure 4, on blade tip, be embedded with thread head 21 (as shown in Figure 3) with the position of blade root fastenings, blade tip 2 is connected with blade tip pitch variable bearings 4 by stud bolt.Its middle cylinder body 11 can be connected with the outer ring of blade tip pitch variable bearings 4, blade tip 2 is connected with the inner ring of blade tip pitch variable bearings 4, becoming oar driving mechanism 3 by blade tip drives 4 rotations of blade tip pitch variable bearings to make blade tip become oar to different pitch angles, realize power adjustments, when blade tip 2 is adjusted to feather position, can realize blade aerodynamic brake, as shown in Figure 5.
The present invention also provides a kind of large-scale wind driven generator, comprises axial fan hub, and above-mentioned sectional-type blade is installed on axial fan hub.Due to above-mentioned sectional-type blade being installed, this large-scale wind driven generator also has identical beneficial effect.
Can also do further improvement to the function of the large-scale wind driven generator of above-described embodiment, design the another set of pitch-controlled system-blade root pitch-controlled system except blade tip pitch-controlled system, blade root pitch-controlled system comprises that blade root becomes oar driving mechanism and blade root pitch variable bearings; Blade root becomes oar driving mechanism and is arranged in axial fan hub and is connected with blade root pitch variable bearings, and axial fan hub and blade root are rotatably connected by blade root pitch variable bearings.Above-mentioned blade root pitch-controlled system is consistent with blade tip pitch-controlled system principle, by corresponding change oar driving mechanism, realizes whole vane propeller-changing.By the separate pitch-controlled system of two covers is set in large-scale wind driven generator, this Redundancy Design can improve operational reliability and the Security of wind-driven generator greatly.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technological scheme that still can record previous embodiment is modified, or part technical characteristics is wherein equal to replacement.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. a large-scale wind driven generator, comprises axial fan hub, it is characterized in that, on described axial fan hub, sectional-type blade is installed;
Described sectional-type blade comprises blade root and the blade tip with blade root fastenings, described blade root comprises cylindrical shell, leaf skeleton and covering, described leaf skeleton is placed in cylindrical shell cylindrical side Monday and is connected with cylindrical shell, wherein, described cylindrical shell only part is placed in leaf skeleton, and described covering covers and is overlying on outside leaf skeleton and is connected with cylindrical shell; Described leaf skeleton is multiple, arrange, and the line on the leaf top of described multiple leaf skeletons forms a smooth trailing edge line on cylindrical shell excircle along drum shaft to interval successively;
Described sectional-type blade also comprises blade tip pitch-controlled system, and described blade tip pitch-controlled system comprises that blade tip becomes oar driving mechanism and blade tip pitch variable bearings; Described blade tip becomes in the cylindrical shell that oar driving mechanism is arranged on blade root and is connected with blade tip pitch variable bearings; Described blade root and blade tip are rotatably connected by blade tip pitch variable bearings;
Described large-scale wind driven generator, also comprises blade root pitch-controlled system, and described blade root pitch-controlled system comprises that blade root becomes oar driving mechanism and blade root pitch variable bearings; Described blade root becomes oar driving mechanism and is arranged in axial fan hub and is connected with blade root pitch variable bearings, and described axial fan hub and blade root are rotatably connected by blade root pitch variable bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210111340.2A CN102606420B (en) | 2012-04-16 | 2012-04-16 | Large wind driven power generator and sectional type blade thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210111340.2A CN102606420B (en) | 2012-04-16 | 2012-04-16 | Large wind driven power generator and sectional type blade thereof |
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| CN102606420A CN102606420A (en) | 2012-07-25 |
| CN102606420B true CN102606420B (en) | 2014-12-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291552B (en) * | 2013-06-17 | 2015-04-22 | 浙江大学宁波理工学院 | Multi-blade multi-driving-paddle wind machine structure |
| CN103629044B (en) * | 2013-12-18 | 2016-08-31 | 中国科学院工程热物理研究所 | A kind of leaf and root structure of Blades For Horizontal Axis Wind |
| CN108266311A (en) * | 2018-01-16 | 2018-07-10 | 陈博涵 | A kind of wind power generation blade of power self-regulation |
| CN110439743B (en) * | 2019-09-10 | 2021-01-19 | 上海电气风电集团股份有限公司 | Sectional blade of wind turbine |
| CN112483307B (en) * | 2020-10-26 | 2022-04-05 | 西安交通大学 | Three-section pivoting type wind driven generator blade |
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| EP1184566A1 (en) * | 1999-05-31 | 2002-03-06 | Manuel Torres Martinez | Aerogenerator blade |
| FR2863319A1 (en) * | 2003-12-09 | 2005-06-10 | Ocea Sa | Wind generator`s blade for producing electricity, has ribs coupled to mast using sticking lip, and layer coupled to ribs by sticking lip, where sticking lip is constituted of bi-component polyurethane adhesive |
| CN2886120Y (en) * | 2006-01-16 | 2007-04-04 | 南通锴炼风电设备有限公司 | 40m intelligent blade mechanism of wind-driven electric generator |
| CN2918779Y (en) * | 2006-05-18 | 2007-07-04 | 阚泽 | Plume type wind-power generator group windwheel blade |
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| CN201730759U (en) * | 2010-04-21 | 2011-02-02 | 浙江恒通机械有限公司 | Wind turbine blade |
| CN202056007U (en) * | 2011-04-29 | 2011-11-30 | 三一电气有限责任公司 | High-power wind generator and blade thereof |
| CN202545133U (en) * | 2012-04-16 | 2012-11-21 | 国电联合动力技术有限公司 | Large-scale wind-driven generator and segmental blades thereof |
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| JPS62192731A (en) * | 1986-02-20 | 1987-08-24 | Canon Inc | Film driving device |
| ES2144336B1 (en) * | 1996-11-15 | 2000-12-01 | Torres Martinez M | BLADE FOR WIND TURBINE. |
| US7939961B1 (en) * | 2010-04-28 | 2011-05-10 | General Electric Company | Wind turbine with integrated design and controlling method |
| DK201100109U3 (en) * | 2010-07-14 | 2011-11-11 | Envision Energy Denmark Aps | Profiled hub extender |
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2012
- 2012-04-16 CN CN201210111340.2A patent/CN102606420B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1184566A1 (en) * | 1999-05-31 | 2002-03-06 | Manuel Torres Martinez | Aerogenerator blade |
| FR2863319A1 (en) * | 2003-12-09 | 2005-06-10 | Ocea Sa | Wind generator`s blade for producing electricity, has ribs coupled to mast using sticking lip, and layer coupled to ribs by sticking lip, where sticking lip is constituted of bi-component polyurethane adhesive |
| CN2886120Y (en) * | 2006-01-16 | 2007-04-04 | 南通锴炼风电设备有限公司 | 40m intelligent blade mechanism of wind-driven electric generator |
| CN2918779Y (en) * | 2006-05-18 | 2007-07-04 | 阚泽 | Plume type wind-power generator group windwheel blade |
| CN201159131Y (en) * | 2008-01-25 | 2008-12-03 | 张延胜 | Wind motor blade |
| CN201730759U (en) * | 2010-04-21 | 2011-02-02 | 浙江恒通机械有限公司 | Wind turbine blade |
| CN202056007U (en) * | 2011-04-29 | 2011-11-30 | 三一电气有限责任公司 | High-power wind generator and blade thereof |
| CN202545133U (en) * | 2012-04-16 | 2012-11-21 | 国电联合动力技术有限公司 | Large-scale wind-driven generator and segmental blades thereof |
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| CN102606420A (en) | 2012-07-25 |
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