CN103670953A - Sectional wind turbine blade and assembling method thereof - Google Patents
Sectional wind turbine blade and assembling method thereof Download PDFInfo
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- CN103670953A CN103670953A CN201310685771.4A CN201310685771A CN103670953A CN 103670953 A CN103670953 A CN 103670953A CN 201310685771 A CN201310685771 A CN 201310685771A CN 103670953 A CN103670953 A CN 103670953A
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Abstract
The invention discloses a sectional wind turbine blade and an assembling method of the sectional wind turbine blade. The sectional wind turbine blade comprises at least two sections. Each section comprises a C-type blade shell and a crossbeam arranged in the blade shell. A fixed bolt hole is formed in a blade shell fracture surface of the sectional connecting position. Adjacent sections are connected with fixed bolt hole assembling blades through a dual-direction reverse bolt. The draught fan blade can be divided into the two sections and spliced and installed in the field considering high mountain wind power plants. Bolted connection is adopted for sectional draught fan blade connecting positions, steel frame connection is adopted at the blade enter, structural adhesives are adopted for strengthening joints, and glass fiber leveling is used for the surface. The strength of the novel draught fan blades is guaranteed, and the problems that high mountain wind power station blades are difficult to transport and road cost is high are solved. The sectional wind turbine blade has strong practicability.
Description
Technical field
The invention belongs to blade of wind-driven generator technical field, be specifically related to a kind of sectional wind generator blade.The invention still further relates to the assembling method of this blade.
Background technique
China Central China and southwest, mountain area distributes relatively many, progressively expansion of wind-force exploitation along with Central China and southwest, mountain region wind power plant is also increasing gradually, wherein in wind power generating set, the longest parts are blades, mountain region wind power plant Leaf transportation is one of factor of restriction mountain region wind power plant development, and the transportation of blade in mountain region mainly contains following difficult point: 1) haulage vehicle is long; 2) radius of turn is large; 3) the blade scope of winding up is large.What time all can cause above mountain region road earthwork increase or mountain forest felling more, thereby cause developing mountain region wind power cost increase or mountain region Wind Power Generation is become infeasible.In addition along with research and development gradually and the application of large capacity unit and low wind speed operating unit, fan blade length will be longer, mountain region wind electricity blade transportation will be more difficult, can resolve fan blade mountain region transportation problem, by directly affecting the cost of investment of exploitation wind energy turbine set, also affect large capacity unit and low wind speed operating unit in the popularization of mountain region wind field.
At present domestic existing part wind power generating set producer is at research segmentation fan blade, but the segmentation glass fibre laying design that is mainly joint is, three aspects :s such as the interconnection technique research of segmentation place and the Design of Dies after segmentation and making.Foreign vendor also makes some progress at sectional wind turbine blade, the on-the-spot segmentation bonding technology of U.S. BLADE dynamic company research and development blade; Germany Enercon company works out the on-the-spot segmentation bolt of blade interconnection technique, but cost of production is high and be all in test or trial run stage, and achievement is also immature.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of transportation field-installed sectional wind generator blade of energy of can breaking.
The present invention solves the problems of the technologies described above by the following technical programs:
A kind of sectional wind generator blade, comprise at least two segmentations, it is characterized in that: each segmentation comprises the crossbeam in C type leaf shell and leaf shell, the leaf shell section at connection segment place has fixed bolt hole, and adjacent segmentation is connected and fixed bolt hole assembling blade by two-way reverse bolt.
In order to obtain better technique effect, crossbeam is comprised of middle web and upper and lower beam cap and forms i shaped cross section; The crossbeam of adjacent sectional connects by connecting plate; The connecting end surface chamfered of segmentation; In gap, connection segment place, use structure glue to fill; One deck polymer matrix composites are laid at the chamfering place at connection segment place.
The present invention also provides a kind of assembling method of sectional wind generator blade, the steps include:
1) adjacent sectional is axially aligned;
2) two-way reverse bolt is connected to the fixed bolt hole of adjacent sectional;
3) use instrument successively rotates two-way reverse bolt and makes adjacent sectional 1 and 3 along axial wriggling, and last two blades are stitched together;
4) use structure glue to fill the gap of the width of working surface of table of the two-way reverse bolt forming between adjacent sectional.
In order to obtain better technique effect, the two-way reverse bolt sleeve described in step 2 has check washer; In step, by before 4, use connecting plate that the web of the crossbeam of adjacent sectional is connected; After step 4, at the segmentation chamfering place at connection segment place, lay one deck polymer matrix composites, then polish, make blade smooth in joint, finally to the joint processing of spraying paint.
The present invention is applicable to the mountain area of high mountain wind energy turbine set and traffic condition difficulty, and the present invention can be divided at least two sections, and on-the-spot splicing is installed.Sectional wind turbine blade of the present invention joint is with bolts, blade center adopts the mode that Steel Skeleton connects, splicing interface employing structure glue is reinforced, surface adopts glass fibre levelling.This Novel blower blade has not only guaranteed the intensity of blade, and has solved the problem that high mountain wind electric field blower transport of blades is difficult, road cost is high, has very strong practicability.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention structural representation;
Fig. 2 is embodiment of the present invention partial enlarged drawing;
Fig. 3 is embodiment of the present invention A-A ' cross sectional view.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
A kind of sectional wind generator blade, comprise at least two segmentations 1,3, each segmentation comprises the crossbeam 4 in C type leaf shell and leaf shell, the leaf shell section of segmentation 1,3 joints has fixed bolt hole 8, adjacent segmentation 1,3 is connected and fixed bolt hole 8 assembling blades by two-way reverse bolt 7, and crossbeam 4 is comprised of middle web and upper and lower beam cap and forms i shaped cross section; The crossbeam 4 of adjacent sectional connects by connecting plate 9; The connecting end surface chamfered of segmentation 1,3; In segmentation 1,3 gaps, joint, use structure glue to fill; One deck polymer matrix composites are laid at the chamfering place of segmentation 1,3 joints.
An assembling method for sectional wind generator blade, the steps include:
1) adjacent sectional 1,3 is axially aligned;
2) cover is had to the fixed bolt hole 8 of the two-way reverse bolt 7 connection adjacent sectional 1,3 of check washer;
3) head 10 that use instrument successively rotates two-way reverse bolt 8 makes adjacent sectional 1,3 along axial wriggling, and latter two segmentation 1,3 is stitched together;
4) use connecting plate 9 that the crossbeam of adjacent sectional 1,34 is connected;
5) use structure glue to fill the gap of head 10 width of the two-way reverse bolt 7 of 1,3 of adjacent sectional;
6) at the segmentation chamfering place of segmentation 1,3 joints, lay one deck polymer matrix composites, then polish, make blade smooth in joint, finally to the joint processing of spraying paint.
Cardinal principle of the present invention is: the main material of blade of wind-driven generator of the present invention is polymer matrix composites, popular name is glass fibre reinforced plastics, this composite material by adopting glass fibre and Epoxy Resin are combined to, the feature with antifatigue, corrosion-resistant, easy-formation, high damping, can meet the stressed complexity of fan blade, weatherability is high, vibration resistance is strong, the technical requirements of easy care.Blade of wind-driven generator of the present invention is comprised of the crossbeam in C type leaf shell and shell, and crossbeam 4 is comprised of the web of middle shearing resistance and upper and lower beam cap and forms i shaped cross section in shell.The bending and shearing of crossbeam 4 shared blades in C type leaf shell and shell.
Blade of wind-driven generator of the present invention is connected jointly and completes with chemistry by mechanical connection.Mechanical connection is divided into two-part: first portion is that segmentation connects the fixed bolt hole 8 of blade section 1,3 by two-way reverse bolt 7; Second portion is that the bolt 5 between the crossbeam 4 of blade interior connects.Chemistry connects and is also divided into two-part, and first portion is the connection of the structure glue in 1,3 gaps of blade section; Second portion is that the polymer matrix composites that segmentation 1,3 joints cover connect.
The concrete implementation step of the present invention is:
1) blade of wind-driven generator is divided into blade from centre to two segmentations 1,3, the cross section 11 after segmentation is smooth smooth, and not containing polluting impurity;
2) in the central position of blade of wind-driven generator, twice crossbeam 4 is set;
3) at the thickness of end face 2 place's reinforced blades of segmentation, make the thickness of blade can be fixed the perforate of bolt hole 8, surrounding at blade arranges a circle fixed bolt hole 8, and the thickness of the blade of fixed bolt hole 8 ends reaches the minimum requirement of blade design, avoids the local strength of blade to destroy;
4) in end face 2 place's chamferings of segmentation 1,3, the radius of blade stitching portion is reduced, form the gap after connecting;
5) in work progress, first by the location, two ends of blade section 1,3, make two segmentations 1,3 on same axis, then utilize two-way reverse bolt 7 that the fixed bolt hole at fan blade segmentation 1,3 end face 2 places 8 is connected, on two-way reverse bolt 7, put check washer, utilize hexagon nut wrench successively to pull the head 10 of two-way reverse bolt 8, each two-way reverse bolt 7 is at every turn with Small-angle Rotation, make two segmentations 1,3 along axially evenly wriggling, last two segmentations 1,3 are stitched together;
6) in order to strengthen the join strength of fan blade, perforate on the crossbeam 4 of fan blade, the both sides of the crossbeam 4 of two segmentations 1,3 overlap with steel plate 9, and steel plate is connected with high-strength bolt 5 with crossbeam;
7) between segmentation 1,3, directly form the gap that width equals two-way reverse bolt 7 head 10 width, by structure glue 12, fill gap, both guaranteed the integrity of fan blade, strengthened again the intensity of fan blade;
8), due in step 5), fan blade joint forms a gap, in order to guarantee the slickness of blade, surrounding at gap is spread polymer matrix composites, and finally polishing, makes joint smooth, finally, to the joint processing of spraying paint, guarantee the attractive in appearance of blade.
Claims (10)
1. a sectional wind generator blade, comprise at least two segmentations, it is characterized in that: each segmentation comprises the crossbeam in C type leaf shell and leaf shell, the leaf shell section at connection segment place has fixed bolt hole, and adjacent segmentation is connected and fixed bolt hole assembling blade by two-way reverse bolt.
2. sectional wind generator blade as claimed in claim 1, is characterized in that: described crossbeam is comprised of middle web and upper and lower beam cap and forms i shaped cross section.
3. sectional wind generator blade as claimed in claim 2, is characterized in that: the crossbeam of adjacent sectional connects by connecting plate.
4. sectional wind generator blade as claimed in claim 1 or 2, is characterized in that: the connecting end surface chamfered of described segmentation.
5. sectional wind generator blade as claimed in claim 1 or 2, is characterized in that: gap, connection segment place is used structure glue to fill.
6. sectional wind generator blade as claimed in claim 1 or 2, is characterized in that: one deck polymer matrix composites are laid at the chamfering place at described connection segment place.
7. an assembling method for sectional wind generator blade, the steps include:
1) adjacent sectional is axially aligned;
2) two-way reverse bolt is connected to the fixed bolt hole of adjacent sectional;
3) use instrument successively rotates two-way reverse bolt and makes adjacent sectional 1 and 3 along axial wriggling, and last two blades are stitched together;
4) use structure glue to fill the gap of the width of working surface of table of the two-way reverse bolt forming between adjacent sectional.
8. the assembling method of sectional wind generator blade as claimed in claim 7, is characterized in that: the two-way reverse bolt sleeve described in step 2 has check washer.
9. the assembling method of sectional wind generator blade as claimed in claim 7 or 8, is characterized in that: described in step by before 4, use connecting plate that the crossbeam of adjacent sectional is connected.
10. the assembling method of sectional wind generator blade as claimed in claim 7 or 8, it is characterized in that: after step 4, one deck polymer matrix composites are laid at segmentation chamfering place at connection segment place, polish again, make blade smooth in joint, finally to the joint processing of spraying paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310685771.4A CN103670953A (en) | 2013-12-16 | 2013-12-16 | Sectional wind turbine blade and assembling method thereof |
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| CN201310685771.4A CN103670953A (en) | 2013-12-16 | 2013-12-16 | Sectional wind turbine blade and assembling method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976051A (en) * | 2014-04-11 | 2015-10-14 | 西门子公司 | Segmented rotor blade with a bolt connection |
| CN105545614A (en) * | 2016-02-19 | 2016-05-04 | 彭伟成 | Generator blade and operation method thereof |
| CN106050577A (en) * | 2016-06-01 | 2016-10-26 | 北京金风科创风电设备有限公司 | Blade extending method, blade and wind generating set |
| CN107288813A (en) * | 2017-06-22 | 2017-10-24 | 吴德礼 | A kind of wind power generation blade |
| CN110131095A (en) * | 2017-12-22 | 2019-08-16 | 西门子歌美飒可再生能源公司 | Pultruded fiber composite strip of non-planar profile section for blade spar cap |
| WO2021253146A1 (en) * | 2020-06-15 | 2021-12-23 | 永嘉县麦通机械有限公司 | New type of wind turbine blade |
| CN114555344A (en) * | 2019-10-18 | 2022-05-27 | 西门子歌美飒可再生能源公司 | Method and system for assembling blade components of a wind turbine blade |
| CN115234433A (en) * | 2022-08-05 | 2022-10-25 | 浙江大学 | Sectional type composite material wind power blade achieving connection in hybrid connection mode |
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| EP1561947A2 (en) * | 2004-02-05 | 2005-08-10 | Fuji Jukogyo Kabushiki Kaisha | Wind turbine blade transportable in sections |
| CN102192110A (en) * | 2011-06-12 | 2011-09-21 | 中国科学院工程热物理研究所 | Subsection blade of wind turbine and assembling method thereof |
| CN102734084A (en) * | 2012-06-26 | 2012-10-17 | 昆明理工峰潮科技有限公司 | Sectional blade of wind driven generator |
| CN203856650U (en) * | 2013-12-16 | 2014-10-01 | 江西省电力设计院 | Sectional wind turbine blade |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1561947A2 (en) * | 2004-02-05 | 2005-08-10 | Fuji Jukogyo Kabushiki Kaisha | Wind turbine blade transportable in sections |
| CN102192110A (en) * | 2011-06-12 | 2011-09-21 | 中国科学院工程热物理研究所 | Subsection blade of wind turbine and assembling method thereof |
| CN102734084A (en) * | 2012-06-26 | 2012-10-17 | 昆明理工峰潮科技有限公司 | Sectional blade of wind driven generator |
| CN203856650U (en) * | 2013-12-16 | 2014-10-01 | 江西省电力设计院 | Sectional wind turbine blade |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976051B (en) * | 2014-04-11 | 2019-10-18 | 西门子歌美飒可再生能源公司 | Segmented rotor blade with bolted connections |
| CN104976051A (en) * | 2014-04-11 | 2015-10-14 | 西门子公司 | Segmented rotor blade with a bolt connection |
| CN105545614A (en) * | 2016-02-19 | 2016-05-04 | 彭伟成 | Generator blade and operation method thereof |
| CN106050577A (en) * | 2016-06-01 | 2016-10-26 | 北京金风科创风电设备有限公司 | Blade extending method, blade and wind generating set |
| CN106050577B (en) * | 2016-06-01 | 2018-09-11 | 北京金风科创风电设备有限公司 | Blade extending method, blade and wind generating set |
| CN107288813A (en) * | 2017-06-22 | 2017-10-24 | 吴德礼 | A kind of wind power generation blade |
| CN110131095A (en) * | 2017-12-22 | 2019-08-16 | 西门子歌美飒可再生能源公司 | Pultruded fiber composite strip of non-planar profile section for blade spar cap |
| CN110131095B (en) * | 2017-12-22 | 2022-08-30 | 西门子歌美飒可再生能源公司 | Pultruded fiber composite strip of non-planar profile section for blade spar cap |
| US11454208B2 (en) | 2017-12-22 | 2022-09-27 | Siemens Gamesa Renewable Energy A/S | Pultruded fibrous composite strips having non-planar profiles cross-section for wind turbine blade spar caps |
| CN114555344A (en) * | 2019-10-18 | 2022-05-27 | 西门子歌美飒可再生能源公司 | Method and system for assembling blade components of a wind turbine blade |
| US11959454B2 (en) | 2019-10-18 | 2024-04-16 | Siemens Gamesa Renewable Energy A/S | Method and a system for assembling blade parts of a wind turbine blade |
| WO2021253146A1 (en) * | 2020-06-15 | 2021-12-23 | 永嘉县麦通机械有限公司 | New type of wind turbine blade |
| CN115234433A (en) * | 2022-08-05 | 2022-10-25 | 浙江大学 | Sectional type composite material wind power blade achieving connection in hybrid connection mode |
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Application publication date: 20140326 |