CN102400859A - Blade root structure of wind power blade - Google Patents
Blade root structure of wind power blade Download PDFInfo
- Publication number
- CN102400859A CN102400859A CN2011102304506A CN201110230450A CN102400859A CN 102400859 A CN102400859 A CN 102400859A CN 2011102304506 A CN2011102304506 A CN 2011102304506A CN 201110230450 A CN201110230450 A CN 201110230450A CN 102400859 A CN102400859 A CN 102400859A
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- blade
- bolt sleeve
- root
- bamboo bar
- glass fibre
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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 provides a blade root structure of a wind power blade. The blade root structure comprises a bolt sleeve, two or more layers of bamboo splints, glass fiber and/or carbon fiber reinforced materials and a glass fiber skin, wherein the two or more layers of bamboo splints are positioned in the thickness direction of a blade root; the glass fiber and/or carbon fiber reinforced materials are positioned between the bolt sleeve and the bamboo splints; and the glass fiber skin is formed on the inner surface and the outer surface of the blade root. Through the blade root structure, connection safety between the blade and a hub is guaranteed, meanwhile, the weight of the blade root is reduced, the cost of the blade root and the production investment of the blade are reduced, and the damage caused to the environment after recovery of the blade is reduced. The invention also provides a manufacturing method for the blade root of the wind power blade at the same time.
Description
Technical field
The present invention relates to wind power generation field, relate in particular to a kind of leaf and root structure of wind electricity blade.
Background technique
At present the root Placement of blades of large-scale wind driven generator adopts drilling technology behind the glass fibre reinforced plastics more, and promptly punching then at blade root glass fibre reinforced plastics thickness direction, the method for assembling metal bolt sleeve realizes being connected of blade and wheel hub.This connecting means can cause blade root intensity to reduce owing to destroyed the glass fibre of blade root, so the glass fibre that blade root need be a large amount of, guarantees the structural safety of blade root.This has not only caused root of blade weight heavier, and the blade cost is higher, simultaneously, because behind the blade forming, blade root needs cutting, has also caused great waste of material.In addition, back punch device costs an arm and a leg, and takies bigger factory's area, causes having high input of blade factory early stage, and the social resources waste is serious.Glass fibre reinforced plastics is difficult for reclaiming, and when blade reached the life-span, the processing of glass fibre reinforced plastics also was very big environmental problem.
Summary of the invention
The objective of the invention is to research and develop a kind of leaf and root structure of novel wind power blade, guarantee blade and wheel hub attachment security, alleviate the weight of blade root simultaneously, reduce the cost of blade root, reduce the production investment of blade, reduce blade and reclaim the back environment damage.
To achieve these goals; The present invention provides a kind of leaf and root structure of wind electricity blade, and this blade root linkage structure comprises glass fibre and/or the carbon fibre reinforcement between two-layer or two-layer above bamboo bar, bolt sleeve and the bamboo bar of bolt sleeve, blade root thickness direction, the glass fibre covering of blade root inner and outer surface.
Preferably, said bolt sleeve is evenly distributed on the blade root circle, and its end face has tapped hole, is convenient to be connected with wheel hub, and there is the groove of serpentine on the surface, and glass fiber yarn is twined on the surface of bolt sleeve in leaf blade manufacture process, to strengthen its bonding strength.
According to the thickness of actual blade root, the bamboo bar more than the root of blade lay is two-layer or two-layer is fit to the profile of bolt sleeve through scarf near many bamboo bars of bolt sleeve.Filled glass fiber and/or graphite fiber between bolt sleeve and bamboo bar have increased the join strength between bolt sleeve and the bamboo bar.Simultaneously, at the inner and outer surface lay glass fibre covering of blade root, can protect the bamboo bar in the blade root not destroyed by the burn into of environment.
The present invention adopts the main material of high-intensity bamboo-based composite material as the wind electricity blade leaf root part, thereby has significantly reduced glass fiber reinforced plastics product in the influence that is brought aspect weight, cost, the environmental pollution.
Description of drawings
Through hereinafter with reference to the description part that accompanying drawing carried out, can better understand all above-mentioned characteristics, said accompanying drawing is:
Fig. 1 is the overall schematic of wind electricity blade among the present invention, and 1 is the leaf root part of blade;
Fig. 2 is the enlarged diagram of leaf root part among Fig. 1; Wherein 2 is bolt sleeve; 3 is the tapped hole of bolt sleeve end face; 4 is glass fibre and/or the carbon fibre reinforcement between bolt sleeve and the bamboo bar, and 5 for being laid in the two-layer or two-layer above bamboo bar of blade root thickness direction, and 6 is the glass fibre covering of blade root inner and outer surface;
Fig. 3 is an A-A cross-sectional view among Fig. 2;
Fig. 4 is the partial enlarged drawing of the S shape groove 7 at bolt sleeve outer surface B place among Fig. 3;
Fig. 5 is the scarf shape of bamboo bar around the bolt sleeve.
Embodiment
In order to solve the influence of aspects such as cost that the glass fibre reinforced plastics blade root brings, resource, environment; My company passes through theoretical calculation and experiment; Independent research with the bamboo wood be main material, glass fibre and/or graphite fiber be auxiliary material, in the blade root Placement of the pre-buried taper bolt sleeve of blade root; This method can reach the requirement of structural safety; Use a large amount of glass fibres of bamboo wood instead of glass steel root of blade simultaneously, reduced leaf weight, reduced the blade manufacture cost, be beneficial to the recycling of material.Owing to adopt the mode of pre-embedded bolt cover to substitute the back drilling technology, also reduced equipment investment and plant investment that blade is produced.
The invention provides a kind of design of leaf and root structure of novel wind power blade, Fig. 1 is the schematic representation of wind electricity blade, and wherein 1 is the leaf root part of blade.Fig. 2 is the enlarged view of leaf root part, and bolt sleeve 2 is evenly distributed on blade root 1 circumference, is the two-layer or two-layer above bamboo bar 5 of blade root 1 thickness direction around the bolt sleeve 2, preferably adopts high-intensity bamboo-based composite material.Filled glass fiber or carbon fibre reinforcement 4 between bamboo bar 5 and the bolt sleeve 2.In order to protect the bamboo bar in the blade root not destroyed by the burn into of environment, at the inner and outer surface lay glass fibre covering 6 of blade root.
The profile of bolt sleeve 2 totally is taper, and is big near the cross section of blade root 1, and contains the tapped hole 3 that is connected with wheel hub, as shown in Figure 3.The outer surface of bolt sleeve 2 is S shape groove 7, and is as shown in Figure 4.Simultaneously, in order to increase the bonding strength on bolt sleeve 2 surfaces, twine glass fiber yarn on its surface usually.
In Fig. 5, example gone out can be used for bamboo bar 5 of the present invention scarf 8, usually the bamboo bar 5 around the bolt sleeve 2 is processed into the scarf 8 of different modes, the combination of the scarf 8 through many bamboo bars 5 is to adapt to the profile of bolt sleeve 2.
In process of production, the blade root lay-up process is following:
1, at the glass fibre covering 6 in blade production mould middle berth foliation root 1 outside;
2, lay one deck or which floor bamboo bar 5 above glass fibre covering 6, many bamboo bars 5 that have scarf 8 are laid in corresponding position, reserve the space of bolt sleeve 2;
3, lay glass fibre and/or carbon fibre reinforcement 4 above bamboo bar 5;
4, twine glass fiber yarn on the surface of bolt sleeve 2, be fixed on then on the blade root circumference;
5, lay glass fibre and/or carbon fibre reinforcement 4 above bolt sleeve 2 and bamboo bar 5;
6, continue lay one deck or which floor bamboo bar 5, many bamboo bars 5 that have scarf 8 are laid in corresponding position, and the scarf 8 of many bamboo bars 5 adapts with the profile of bolt sleeve 2;
7, the glass fibre covering 6 of lay leaf root part 1 inboard;
8, use resin that all material is combined into integral body.
Claims (6)
1. the leaf and root structure of a wind electricity blade is characterized in that: this leaf and root structure comprises glass fibre and/or the carbon fibre reinforcement (4) between two-layer or two-layer above bamboo bar (5), said bolt sleeve (2) and the said bamboo bar (5) of bolt sleeve (2), blade root thickness direction, the glass fibre covering (6) of blade root inner and outer surface.
2. leaf and root structure according to claim 1 is characterized in that, said bamboo bar (5) is the high-strength bamboo based composites of strip.
3. leaf and root structure according to claim 1 is characterized in that, said bolt sleeve (2) is taper, and its outer surface has S shape groove (7), and end face has tapped hole (3), and the outer surface of said bolt sleeve (2) twines glass fiber yarn.
4. leaf and root structure according to claim 1 is characterized in that, said bolt sleeve (2) said bamboo bar (5) on every side adapts to the profile of said bolt sleeve (2) through different scarf (8).
5. leaf and root structure according to claim 1; It is characterized in that having between the said bamboo bar (5) in the said blade root linkage structure, said glass fibre and/or carbon fibre reinforcement (4) and the said bolt sleeve (2) and be used for they are bondingly become whole resin.
6. the production method of the blade root of a wind electricity blade comprises:
A) the glass fibre covering outside blade production mould middle berth foliation root;
B) one or more layers bamboo bar of lay above the glass fibre covering, and reserve the space of bolt sleeve;
C) lay glass fibre and/or carbon fibre reinforcement above the bamboo bar;
D) be fixed on the blade root circumference at bolt sleeve;
E) lay glass fibre and/or carbon fibre reinforcement above bolt sleeve and bamboo bar;
F) continue one or more layers bamboo bar of lay, the scarf of bamboo bar and the profile of bolt sleeve adapt;
G) the inboard glass fibre covering of lay leaf root part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102304506A CN102400859A (en) | 2011-08-12 | 2011-08-12 | Blade root structure of wind power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102304506A CN102400859A (en) | 2011-08-12 | 2011-08-12 | Blade root structure of wind power blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102400859A true CN102400859A (en) | 2012-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102304506A Pending CN102400859A (en) | 2011-08-12 | 2011-08-12 | Blade root structure of wind power blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102400859A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110352A (en) * | 2014-06-19 | 2014-10-22 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing root portion of fan blade with square embedded bolt sleeve |
| CN105121840A (en) * | 2013-01-10 | 2015-12-02 | 普罗塞克思工程公司 | Fixation for a wind turbine blade to the hub |
| CN105523052A (en) * | 2015-12-20 | 2016-04-27 | 沈阳市沈飞专用设备厂 | Carbon fiber skin structure |
| CN107269461A (en) * | 2017-08-10 | 2017-10-20 | 中材科技风电叶片股份有限公司 | Wind electricity blade leaf and root structure |
| CN107654334A (en) * | 2016-10-26 | 2018-02-02 | 中材科技风电叶片股份有限公司 | Root structure and its manufacture method, the wind electricity blade of wind electricity blade |
| CN110778448A (en) * | 2019-10-29 | 2020-02-11 | 明阳智慧能源集团股份公司 | Embedded threaded sleeve for blade root of fan blade and design method thereof |
| CN111765041A (en) * | 2020-07-14 | 2020-10-13 | 连云港中复连众复合材料集团有限公司 | Root connecting structure of wind power blade and manufacturing method thereof |
| CN112983755A (en) * | 2021-02-09 | 2021-06-18 | 三一重能股份有限公司 | Blade root and blade |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201165933Y (en) * | 2008-03-20 | 2008-12-17 | 中航惠腾风电设备股份有限公司 | Wind electric blade bolt sleeve pre-embedded molding structure |
| WO2009085041A1 (en) * | 2007-12-27 | 2009-07-09 | General Electric Company | Flexible wind blade root bulkhead flange |
| CN101892946A (en) * | 2010-07-22 | 2010-11-24 | 北京可汗之风科技有限公司 | Root structural design of wind driven generator blade |
| CN102022288A (en) * | 2010-12-03 | 2011-04-20 | 北京可汗之风科技有限公司 | Design for bamboo wood blade root structure of wind driven generator |
-
2011
- 2011-08-12 CN CN2011102304506A patent/CN102400859A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009085041A1 (en) * | 2007-12-27 | 2009-07-09 | General Electric Company | Flexible wind blade root bulkhead flange |
| CN201165933Y (en) * | 2008-03-20 | 2008-12-17 | 中航惠腾风电设备股份有限公司 | Wind electric blade bolt sleeve pre-embedded molding structure |
| CN101892946A (en) * | 2010-07-22 | 2010-11-24 | 北京可汗之风科技有限公司 | Root structural design of wind driven generator blade |
| CN102022288A (en) * | 2010-12-03 | 2011-04-20 | 北京可汗之风科技有限公司 | Design for bamboo wood blade root structure of wind driven generator |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105121840A (en) * | 2013-01-10 | 2015-12-02 | 普罗塞克思工程公司 | Fixation for a wind turbine blade to the hub |
| CN105121840B (en) * | 2013-01-10 | 2018-05-15 | 普罗塞克思工程公司 | Fixation of the wind turbine blade to wheel hub |
| CN104110352A (en) * | 2014-06-19 | 2014-10-22 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing root portion of fan blade with square embedded bolt sleeve |
| CN104110352B (en) * | 2014-06-19 | 2017-01-11 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing root portion of fan blade with square embedded bolt sleeve |
| CN105523052A (en) * | 2015-12-20 | 2016-04-27 | 沈阳市沈飞专用设备厂 | Carbon fiber skin structure |
| CN107654334A (en) * | 2016-10-26 | 2018-02-02 | 中材科技风电叶片股份有限公司 | Root structure and its manufacture method, the wind electricity blade of wind electricity blade |
| CN107654334B (en) * | 2016-10-26 | 2023-11-07 | 中材科技风电叶片股份有限公司 | Root structure of wind power blade, manufacturing method of root structure and wind power blade |
| CN107269461A (en) * | 2017-08-10 | 2017-10-20 | 中材科技风电叶片股份有限公司 | Wind electricity blade leaf and root structure |
| CN110778448A (en) * | 2019-10-29 | 2020-02-11 | 明阳智慧能源集团股份公司 | Embedded threaded sleeve for blade root of fan blade and design method thereof |
| CN110778448B (en) * | 2019-10-29 | 2024-08-09 | 明阳智慧能源集团股份公司 | Fan blade root embedded screw sleeve and design method thereof |
| CN111765041A (en) * | 2020-07-14 | 2020-10-13 | 连云港中复连众复合材料集团有限公司 | Root connecting structure of wind power blade and manufacturing method thereof |
| CN112983755A (en) * | 2021-02-09 | 2021-06-18 | 三一重能股份有限公司 | Blade root and blade |
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Application publication date: 20120404 |