CN102192110B - Subsection blade of wind turbine and assembling method thereof - Google Patents
Subsection blade of wind turbine and assembling method thereof Download PDFInfo
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- CN102192110B CN102192110B CN201110156422A CN201110156422A CN102192110B CN 102192110 B CN102192110 B CN 102192110B CN 201110156422 A CN201110156422 A CN 201110156422A CN 201110156422 A CN201110156422 A CN 201110156422A CN 102192110 B CN102192110 B CN 102192110B
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Abstract
The invention discloses a subsection blade of a wind turbine and an assembling method thereof. The subsection blade of the wind turbine is formed by two sections or more than two sections of composite material blade sections; a metal bolt sleeve is embedded at a connecting place of the blade sections, adjacent blade sections are connected by using a double-end reverse threaded bolt through a steel wire rope passing through a small hole on a bolt head to form an integral wind turbine blade. By adopting the subsection blade, the problem of difficult transportation of long blades can be solved and the transportation cost is reduced. Meanwhile, the subsection blade of the wind turbine has a simple connecting structure and high reliability and is convenient to assemble on site.
Description
Technical field
The present invention relates to a kind of pneumatic equipment blades made, relate in particular to a kind of wind energy conversion system subsection blade, belong to the component of wind power plant.
Background technique
Shortage of energy sources and Ecological environment worsening have promoted the development of wind-power electricity generation, and in order to catch more energy and to improve Wind Power Utilization efficient, the wind energy conversion system single-machine capacity constantly increases; By initial stage watt level to multikilowatt, and to megawatt and the many megawatts rank of today, length of blade also increases thereupon; Present business-like blade is the longest to have reached 61.5 meters; In Europe, single-machine capacity is 7MW, and blade is about 80 meters commercial wind energy conversion system and has got into the last test stage.Also in the middle of research and development, length of blade will further increase the 8-10MW blade.Yet existing traffic condition does not have obvious variation, and when length of blade surpasses 50 meters, blade transportation problem just becomes very outstanding and can't bear.On the one hand, from security consideration, countries in the world railway, highway administration department all have certain restriction to the length that carries cargo, height etc.; On the other hand, China wind energy turbine set distributes very extensive, a lot of local remote, have inconvenient traffic, large-scale blade cost of transportation is very high when building wind energy turbine set, some area even at all can't send to.
And pneumatic equipment blades made generally adopts fiber reinforced polymer composites, and composite material blade production is harsh especially to environment and technological requirement, and China's wind energy turbine set major part is in the serious or humidity of nearly dust storm, place that salinity is very high.Under this environment, the pneumatic equipment blades made quality of production is difficult to control.And following super sized type pneumatic equipment blades made can use graphite fiber, and this material is very responsive to technology and environment.Nearly wind energy turbine set is built the blade production base and is also had the narrow limitation on the region.This shows that all there is inconvenience in the integral type linear leaf in production, transportation and installation process, thereby, adopt subsection blade, segmentation production, transportation and installation are to solve the wisdom of an above-mentioned difficult problem to select.
Subsection blade in use need be assembled into complete blade; The subsection blade of existing technology is in connection procedure; Be processed into slit in the blade joint; Bond through adding filler in the slit, and connect, and the segmented blade is linked together in inner and outer surface stack ruggedized construction with independent fastening piece; It is less that yet aspects such as load condition that such structure arrangement is born in actual moving process wind energy conversion system and field erected convenience are considered; Simultaneously, fastening piece and overlaying structure can cause problems such as blade joint strength deficiency and aerodynamic loss be bigger when being applied in the actual engineering, and have practical set complicated operation and expense, shortcoming that risk is high; Yet the structure of segmented pneumatic equipment blades made itself directly affects its assembly method, therefore is necessary the structure and the assembly method thereof of existing wind energy conversion system segmented blade are made improvement.
Summary of the invention
To the above-mentioned shortcoming and defect of existing technology, technical problem to be solved by this invention provides that a kind of connection is firm, aerodynamic loss is little and assembling simple wind energy conversion system subsection blade of attended operation and assembling connecting means thereof.
According to an aspect of the present invention, the technological scheme taked for its technical problem of solution of the present invention is:
A kind of wind energy conversion system subsection blade comprises at least two sections blade sections, uses double end reverse thread bolt to be linked in sequence into a blade integral successively between each blade sections; Said blade sections adopts the compound material laying layer; It is characterized in that said blade sections is divided into Liang Maoqu, transition zone and connection area, at Liang Maoqu; The compound material laying layer thickness of beam cap position is big, and the compound material laying layer thickness of other position is little; In transition zone, the gradient thickness of compound material laying layer is a uniform thickness shop layer; In the connection area; The compound material laying layer is a uniform thickness shop layer; At the connection end face of connection area near the stretch out shop layer of a bit of length of the outer surface position place of blade sections; The shop layer of this a bit of length is the linkage section epitaxial part; Its thickness is 1/2 of 3-15mm, its length bolt head thickness of being at least double end reverse thread bolt, and said bolt head thickness is meant the thickness of bolt head along double end reverse thread bolt length direction, the connecting end built-in metal bolt sleeve of layer and the accurate position of holding down bolt cover in the uniform thickness shop of connection area.
Preferably; This also is another important inventive point of the present invention; Have small through hole in the said bolt head, thereby said double end reverse thread bolt is tightened the assembling that realizes each blade sections when connecting, use flexible High Tensile Steel Wire rope successively order pass the small through hole of each bolt head; And said wire rope two ends is fixed together; Thereby connect all double end reverse thread bolts, what prevented effectively that double end reverse thread bolt possibly occur when pneumatic equipment blades made moves is loosening, has strengthened soundness and reliability that the segmented blade connects.
Preferably, its outer surface of said linkage section epitaxial part (6) has consistent gas dynamics profile with the main body of blade sections, thereby after guaranteeing that each blade sections connects, pneumatic equipment blades made integral body has good aerodynamics property.
Preferably, at company's seam crossing use rubber belt sealing of said segmented blade, thereby avoid dust storm or rainwater in the external environment to get into connection seam corrosion and damage connecting bolt.
Preferably, said double end reverse thread bolt is evenly arranged on the connection end face of said blade sections, and such arrangement can make the joint of each blade sections stressed evenly, increases the Security and the reliability that connect.
Preferably, be provided with girder in the hollow space of said blade sections, thereby guarantee that pneumatic equipment blades made integral body has good structural characteristics.
According to a further aspect in the invention, the technological scheme that the present invention is taked for its technical problem of solution also provides a kind of assembling connecting means of wind energy conversion system segmented blade, may further comprise the steps:
(1) the connection end face to each blade sections carries out the roughness processing, and the cleaning bolt sleeve;
(2) after adjacent two blade sections centerings are placed, double end reverse thread bolt is tightened;
(3) after bolt is tightened; Use flexible High Tensile Steel Wire rope to pass the small through hole of the bolt head of each double end reverse thread bolt successively; Thereby connect all double end reverse thread bolts, and said wire rope two ends is fixed together, it is loosening to prevent that bolt from occurring when pneumatic equipment blades made moves;
(4) use step (1)-(3) each blade sections that is linked in sequence successively, thereby accomplish the assembling of wind energy conversion system segmented blade.
Compare with existing technology, wind energy conversion system segmented blade of the present invention and assembly method thereof have following significant technique effect:
1, wind energy conversion system subsection blade of the present invention can be realized segmentation manufacturing, segmentation processing and the segmentation transportation of pneumatic equipment blades made, greatly reduces cost of transportation;
2, wind energy conversion system subsection blade of the present invention along the circumferential thickness homogenization, has increased the blade join strength at connection part compound material laying layer, has improved the reliability that connects;
3, wind energy conversion system subsection blade of the present invention adopts the pre-embedded bolt cover to be connected with double end reverse thread bolt, and is simple in structure, cost is low, the scene is easy for installation;
4, wind energy conversion system subsection blade of the present invention uses the High Tensile Steel Wire rope that each bolt is coupled together through offering aperture at stud bolt head place, and it is loosening to have prevented that effectively bolt from connecting.
Description of drawings
Fig. 1 is a blade sections connection area end face front view.
Fig. 2 is the sectional drawing of Fig. 1 in the A-A cross section.
Fig. 3 connects schematic representation for the subsection blade assembling.
Fig. 4 is blade sections shop layer transition schematic representation.
Description of reference numerals: 1 screw rod, 2 bolt heads, small through hole on 3 bolt heads, 4 bolt sleeves; 5 blade sections connection area compound material laying layers, 6 linkage section epitaxial parts, the wire rope of 7 series connection bolt heads, 8 blade sections beam cap district compound material laying layers; 9 double end reverse thread bolts, layer initial cross section of variation, 10 blade sections beam transition zones shop, 11 blade sections beam transition zones shop layer changes termination cross section, 12 blade sections connection areas; 13 blade sections transition zones, 14 blade sections Liang Maoqu, 15 beam caps.
Embodiment
For making the object of the invention, technological scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, to further explain of the present invention.
Shown in Fig. 1-4, the wind energy conversion system subsection blade comprises at least two sections blade sections I, II; Use double end reverse thread bolt 9 to be linked in sequence into a blade integral successively between blade sections I and the blade sections II; Blade sections I, II adopt the compound material laying layer, and said blade sections is divided into beam cap district 14, transition zone 13 and connection area 12, in beam cap district 14; The compound material laying layer thickness of beam cap position is big, and the compound material laying layer thickness of other position is little; In transition zone 13, gradient thickness is a uniform thickness shop layer; In the connection area 12; The compound material laying layer is a uniform thickness shop layer; 12 connection end face is near the stretch out shop layer of a bit of length of the outer surface position place of blade sections in the connection area; The shop layer of this a bit of length is linkage section epitaxial part 6, and its thickness is 1/2 of 3-15mm, its length bolt head thickness of being at least double end reverse thread bolt, forms complete aerodynamic configuration thereby make things convenient for subsection blade to connect the back; Said bolt head 2 thickness are meant the thickness of bolt head 2 along double end reverse thread bolt 9 length directions, the position that 12 uniform thickness is spread the connecting end built-in metal bolt sleeve 4 of layer and used the accurate holding down bolt cover 4 of fixing device in the connection area.When the compound material laying layer; 8 beginnings increase the width of overlay gradually in blade sections beam cap district; Make shop layer gradual transition; Layer changes and stops a cross section 11 to blade sections beam transition zone shop to change initial cross section 10 from blade sections beam transition zone shop layer, if near the not enough connecting end design thickness of the shop of the maximum blade connecting end layer thickness, then suitably the increase of gradual change shop layer thickness makes blade reach the thickness of design at connecting end.
Preferably; Have small through hole 3 in the said bolt head 2, thereby said double end reverse thread bolt 9 is tightened the assembling that realizes each blade sections when connecting, use flexible High Tensile Steel Wire rope 7 successively order pass the small through hole 4 of each bolt head 2; And said wire rope 7 two ends are fixed together; Thereby connect all double end reverse thread bolts 9, what prevented effectively that double end reverse thread bolt 9 possibly occur when pneumatic equipment blades made moves is loosening, has strengthened soundness and reliability that the segmented blade connects.
Preferably, said linkage section epitaxial part 6 its outer surfaces have consistent gas dynamics profile with the main body of blade sections, thereby after guaranteeing that each blade sections connects, pneumatic equipment blades made integral body has good aerodynamics property.
Preferably, at company's seam crossing use rubber belt sealing of said segmented blade, thereby avoid dust storm or rainwater in the external environment to get into connection seam corrosion and damage connecting bolt 9.
Preferably, said double end reverse thread bolt 9 is evenly arranged on the connection end face of said blade sections, and such arrangement can make the joint of each blade sections I, II stressed evenly, increases the Security and the reliability that connect.
Preferably, be provided with girder in the hollow space of said blade sections I, II, thereby guarantee that pneumatic equipment blades made integral body has good structural characteristics.
When blade is assembled at the scene, following steps are installed carry out:
(1) the connection end face to each blade sections carries out the roughness processing, and the cleaning bolt sleeve;
(2) with two sections blade I, II centering and use double end reverse thread bolt 9 to tighten, two sections blades are simultaneously near linking into an integrated entity;
(3) use the aperture 3 of flexible wire ropes 7 inserting bolts 2, in order all bolts are together in series, and the wire rope two ends is fixed together.
Above-described specific embodiment has carried out further explain to the object of the invention, technological scheme and beneficial effect.Institute it should be understood that the above is merely specific embodiment of the present invention, is not limited to the present invention, and is all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. wind energy conversion system subsection blade; Comprise at least two sections blade sections (I, II); Use double end reverse thread bolt (9) to be linked in sequence into a blade integral successively between each blade sections (I, II), said blade sections (I, II) adopts the compound material laying layer, it is characterized in that; Said blade sections (I, II) is divided into Liang Maoqu (14), transition zone (13) and connection area (12); In Liang Maoqu (14), the compound material laying layer thickness of beam cap (15) position is big, and the compound material laying layer thickness of other position is little; In transition zone (13), the gradient thickness of compound material laying layer is a uniform thickness shop layer; In the connection area (12); The compound material laying layer is a uniform thickness shop layer; The connection end face of (12) is near the stretch out shop layer of a bit of length of the outer surface position place of blade sections in the connection area; The shop layer of this a bit of length is linkage section epitaxial part (6); Its thickness is 1/2 of 3-15mm, its length bolt head (2) thickness of being at least double end reverse thread bolt (9), and said bolt head thickness is meant the thickness of bolt head (2) along double end reverse thread bolt (9) length direction, the connecting end built-in metal bolt sleeve (4) of the uniform thickness of (12) shop layer and the accurate position of location metal bolts cover (4) in the connection area.
2. wind energy conversion system subsection blade according to claim 1; It is characterized in that; Have small through hole (3) in the said bolt head (2), said double end reverse thread bolt (9) thus tighten the assembling that realizes each blade sections (I, II) when connecting, use flexible High Tensile Steel Wire rope (7) successively order pass the small through hole (3) of each bolt head (2); And said wire rope (7) two ends is fixed together, thereby connect all double end reverse thread bolts (9).
3. wind energy conversion system subsection blade according to claim 1 and 2; It is characterized in that; Its outer surface of said linkage section epitaxial part (6) has consistent gas dynamics profile with the main body of blade sections; Thereby after guaranteeing that each blade sections connects, pneumatic equipment blades made integral body has good aerodynamics property.
4. wind energy conversion system subsection blade according to claim 1 and 2 is characterized in that, at company's seam crossing use rubber belt sealing of said subsection blade.
5. wind energy conversion system subsection blade according to claim 1 and 2 is characterized in that, said metal bolts cover (4) is evenly arranged on the connection end face of said blade sections (I, II).
6. wind energy conversion system subsection blade according to claim 1 and 2 is characterized in that, is provided with girder in the hollow space of said blade sections (I, II).
7. according to the assembly method of each described wind energy conversion system subsection blade of claim 1 to 6, it is characterized in that, comprise following installation step:
(1) the connection end face to each blade sections carries out the roughness processing, and the cleaning bolt sleeve;
(2) after adjacent two blade sections centerings are placed, double end reverse thread bolt is tightened;
(3) after bolt is tightened; Use flexible High Tensile Steel Wire rope to pass the small through hole of the bolt head of each double end reverse thread bolt successively; Thereby connect all double end reverse thread bolts, and said wire rope two ends is fixed together, it is loosening to prevent that bolt from occurring when pneumatic equipment blades made moves;
(4) use step (1)-(3) each blade sections that is linked in sequence successively, thereby accomplish the assembling of wind energy conversion system segmented blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110156422A CN102192110B (en) | 2011-06-12 | 2011-06-12 | Subsection blade of wind turbine and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110156422A CN102192110B (en) | 2011-06-12 | 2011-06-12 | Subsection blade of wind turbine and assembling method thereof |
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| Publication Number | Publication Date |
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| CN102192110A CN102192110A (en) | 2011-09-21 |
| CN102192110B true CN102192110B (en) | 2012-10-10 |
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| CN201110156422A Active CN102192110B (en) | 2011-06-12 | 2011-06-12 | Subsection blade of wind turbine and assembling method thereof |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102518569A (en) * | 2012-01-11 | 2012-06-27 | 保定华翼风电叶片研究开发有限公司 | Blade for wind driven generator and wind driven generator with same |
| ES2425026B1 (en) * | 2012-04-03 | 2014-12-05 | Gamesa Innovation & Technology, S.L. | Method of manufacturing a component of a split blade of a wind turbine |
| CN102635514A (en) * | 2012-05-02 | 2012-08-15 | 国电联合动力技术有限公司 | Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade |
| CN102878183B (en) * | 2012-10-10 | 2015-02-04 | 国电联合动力技术有限公司 | Connector and sectional type wind turbine blade using same |
| CN103195666A (en) * | 2013-04-01 | 2013-07-10 | 南通东泰新能源设备有限公司 | Connecting structure and method for segmented blades of megawatt fan |
| CN103437966A (en) * | 2013-09-09 | 2013-12-11 | 湖南大学 | Assembling combined type blade of large-scale wind driven generator |
| CN103670953A (en) * | 2013-12-16 | 2014-03-26 | 江西省电力设计院 | Sectional wind turbine blade and assembling method thereof |
| EP2930350B1 (en) * | 2014-04-11 | 2018-02-14 | Siemens Aktiengesellschaft | Segmented rotor blade with a bolt connection |
| CN104044325B (en) * | 2014-06-04 | 2016-05-18 | 山东英特力新材料有限公司 | The embedding method of metal embedded part in a kind of composite material sandwich structure |
| CN104373302B (en) * | 2014-11-18 | 2017-06-30 | 株洲时代新材料科技股份有限公司 | Large scale wind power machine subsection blade and its equipped connection method |
| CN106438192A (en) * | 2015-08-07 | 2017-02-22 | 中材科技风电叶片股份有限公司 | Sectional type wind power generation blade connecting structure and method |
| CN105822497B (en) * | 2016-05-20 | 2018-07-06 | 中国科学院工程热物理研究所 | A kind of wind turbine blade blade tip extends device and method |
| CN106438193B (en) * | 2016-07-14 | 2018-11-30 | 株洲时代新材料科技股份有限公司 | Shock resistance segmented wind electricity blade and its assembly method |
| CN113757035A (en) * | 2020-06-04 | 2021-12-07 | 乌鲁木齐金风天翼风电有限公司 | Sectional type blade, manufacturing method thereof and wind generating set |
| CN112523934B (en) * | 2020-12-04 | 2022-06-24 | 上海电气风电集团股份有限公司 | Sectional type blade, manufacturing process and wind generating set |
| CN116104688B (en) * | 2023-04-17 | 2023-06-27 | 新创碳谷集团有限公司 | Two-section wind power blade connection structure |
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| JP2004011616A (en) * | 2002-06-11 | 2004-01-15 | Shin Meiwa Ind Co Ltd | Wind mill blade structure for wind power generator |
| JP2006123277A (en) * | 2004-10-27 | 2006-05-18 | Mitsubishi Heavy Ind Ltd | Frp structure, frp windmill blade, and method for joining frp hollow member |
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| DE821883C (en) * | 1948-11-23 | 1951-11-22 | Edgar Foerster | Fixing or connecting screw |
| CN201593478U (en) * | 2009-12-28 | 2010-09-29 | 浙江恒通机械有限公司 | Blade of butt joint type wind turbine |
| CN202073726U (en) * | 2011-06-12 | 2011-12-14 | 中国科学院工程热物理研究所 | Sectional blade of wind turbine |
Non-Patent Citations (2)
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| CN102192110A (en) | 2011-09-21 |
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