CN104214055A - Combination type wind turbine blade and wind generating set comprising same - Google Patents
Combination type wind turbine blade and wind generating set comprising same Download PDFInfo
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- CN104214055A CN104214055A CN201410505224.8A CN201410505224A CN104214055A CN 104214055 A CN104214055 A CN 104214055A CN 201410505224 A CN201410505224 A CN 201410505224A CN 104214055 A CN104214055 A CN 104214055A
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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 combination type wind turbine blade and a wind generating set comprising the same. The butt end surfaces of two adjacent combination sections of the blade are connected with an inner flange plate and an outer flange plate respectively; the inner flange plate and the outer flange plate are in insertion fit with each other, and the side walls of insertion fit parts are intersected to form a plurality of rectangular grooves; each rectangular groove is divided into an upper section and a lower section through a front edge opening and a rear edge opening in the outer flange plate; the wind turbine blade further comprises a plurality of groups of wedge-shaped strips; a left wedge-shaped strip and a right wedge-shaped strip in each group of wedge-shaped strips are reversely inserted into the corresponding rectangular groove from openings in two ends of the same rectangular groove respectively and are in interference fit with the corresponding rectangular groove; positioning plugs are further fixedly arranged at the front edge opening and the rear edge opening. The combination type wind turbine blade is simple in structure, high in connection strength, high in reliability, easy, convenient and quick to mount, good in torsion resistance after connection, and good in pneumatic appearance; the manufacturing difficulty and the transporting difficulty of large-sized wind turbine blades can be reduced, the production cost and the transporting cost are reduced, the production efficiency and the transporting efficiency are improved, and on-site quick assembly is realized.
Description
Technical field
The present invention relates to wind power generating set parts, wind wheel blade field, particularly, the wind power generating set that relates to a kind of combined type wind wheel blade and contain this blade.
Background technique
Wind-power electricity generation is a kind of renewable green energy resource of cleaning, and it develops and to have become 21st century countries in the world and fall over each other a kind of energy form adopting.The improvement of blade aerodynamic configuration and the increase of length of blade are to improve one of important technical of wind-power electricity generation power, and therefore, the Design and manufacture of large-scale blade just becomes an important step in wind power technology.At present length of blade has reached nearly 70 meters from more than 30 meters, and this has just greatly increased manufacture and the transport difficulty of large-scale wind wheel blade.And manufacture and conveying efficiency is low, cost up have very large risk, these unfavorable factors have become the large drag forces that large-scale blade is produced, transported.Therefore, combined type wind wheel blade is the inexorable trend of large-scale wind wheel blade development.Combined type wind wheel blade adopts segmentation manufacture, segmentation transportation and Installation, has reduced manufacture and transport difficulty, has improved production and conveying efficiency, has reduced production and transport cost, is to address the above problem the most effective technological approaches.
By the main Placement of combination type vane being summarized as to following three kinds to the analysis of existing patent:
1) the shaft rod type method that is spirally connected, represents patent US2011091326A1;
2) method that is spirally connected, represents patent CN101718250A;
3) the gluing connection method of mutual-inserting type end face, represents patent CN201210212757.8.
Wherein, the shaft rod type method of being spirally connected is to adopt punching connecting rod mode that two sections of blades are linked together in blade interior, blade face outer surface is level and smooth when static state, because connecting rod a bit connects centered by only, during blade face wind-engaging power effect rotation under pneumatic external force and torsional interaction, its interface can produce gap and ladder produces flow-disturbing because of distortion, reduces the efficiency that blade obtains wind energy.
Bolt connection type connection can cause the out-of-flatness of blade outer surface, make its aeroperformance variation, therefore after assembling, need to fill up bolt slot or protrude position to being spirally connected and install the work such as cowling additional, and make assembly working more loaded down with trivial details, but also will bear the risk of bolt looseness or fracture.
Its reliability of the bonding combining form of inserted link docking end face is worth suspection, and the problem of this method maximum is gluing at the on-the-spot use of wind field resin and hand is stuck with paste and curing process, and it is very large that it realizes difficulty.
As can be seen here, above-mentioned existing combined type wind wheel blade, in Placement, obviously still has inconvenience and defect, and is urgently further improved.How to found a kind of simple in structurely, join strength is high, and good reliability is simple and efficient to handle, the combined type wind wheel blade that after connecting, torsional property is good, aerodynamic configuration is good, and becoming the current industry utmost point needs improved target.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned several Placements, provide a kind of simple in structure, join strength is high, good reliability, simple installation is quick, connect the rear combined type wind wheel blade that torsional property is good, aerodynamic configuration is good, can reduce manufacture and the transport difficulty of large-scale wind wheel blade, reduce and produce and cost of transportation, improve and produce and conveying efficiency, and realize on-the-spot rapid-assembling.
Another object of the present invention is to provide and a kind ofly contains simple in structurely, and join strength is high, good reliability, and simple installation is quick, the wind power generating set of the combined type wind wheel blade that torsional property is good, aerodynamic configuration is good after connecting.
For achieving the above object, the present invention adopts following technological scheme:
A combined type wind wheel blade, described blade is two sections of above combining forms, and an end face in the docking end face of described adjacent combination section connects outward flange dish, and other end connects inner flange; Described outward flange dish and inner flange plug together, and the inner flange outer side wall and the outward flange dish madial wall that plug together part cross, on described inner flange outer side wall and on outward flange dish madial wall, be respectively arranged with at least two grooves along width of blade direction, mutually involutory between groove on described inside and outside flange plate, form the rectangle groove that a plurality of cross sections are rectangle; The leading edge of described outward flange dish and trailing edge place are respectively equipped with leading edge opening and trailing edge opening, and described each rectangle groove is divided into upper and lower two sections by leading edge opening, trailing edge opening; Described wind wheel blade also comprises many group wedge shape bands, upper and lower two sections of described each rectangle groove are inserted respectively one group of wedge shape band, every group of wedge shape band is comprised of two of left and right wedge shape band, and two of the left and right of every group wedge shape band inserts in rectangle groove from described leading edge opening and trailing edge opening respectively, forms interference fit with rectangle groove; The leading edge opening of described outward flange dish and trailing edge opening are also fixed with respectively leading edge location plug and trailing edge location plug.
Further, two ends, left and right on described inner flange outer side wall and on outward flange dish madial wall are all respectively arranged with two grooves along width of blade direction, two grooves on described inner flange on two grooves and outward flange dish are mutually involutory, form two rectangle grooves.
Further, after described inside and outside flange plate is pegged graft, on the radial end face coordinating at both, be also provided with the inserting slot construction of concavo-convex cooperation.
Further, in described concavo-convex inserting slot construction, be provided with seal ring.
Further, described inside and outside flange plate is split-type structural, and each flange plate is divided into upper and lower two sections in its leading edge and trailing edge place.
Further, the leading edge that described leading edge location plug, trailing edge location plug are inserted in respectively outward flange dish is fixedly connected with trailing edge opening and with inner flange, and described leading edge is located plug, trailing edge location plug is consistent with vane airfoil profile curved surface.
Further, described flange plate is embedded in the combination section of described wind wheel blade.
Further, the close blade connecting end of described flange plate is provided with connecting plate, and described connecting plate is inserted in the fiber laying of connected blade, and the bonding and blade shell by resin connects as one.
Further, described connecting plate is rectangular, and is polylith, is welded on respectively on the end face that flange plate is connected with blade shell; Described connecting plate is inserted in 1/2nd places of fiber lay down layer thickness.
Further, also comprise lightning current down lead, one end of described lightning current down lead is fixed by bolts on flange plate, and the other end of lightning current down lead joins with the blade tip arrester that is arranged on blade tip place, or join with the flange plate of the same combination section the other end, or join with blade root.
Further, the integral body that described inside and outside flange plate forms is joined as arrester and ground wire.
A wind power generating set, contains above-mentioned combined type wind wheel blade.
Owing to adopting technique scheme, the present invention at least has following beneficial effect:
1, combined type wind wheel blade adopts the flanged connecting structure of wedge shape band jointing type, and its tension force can meet with intensity the demand that two combination section are reliably connected; Wedge groove operated by rotary motion is at head, middle part and the root of flange plate interface, between wedge groove and wedge groove, there is certain spacing, the docking length therefore with the more single wedge slot flange of the flange plate dish of two above wedge grooves has increased, pretightening force has increased, this has just improved join strength, torsional property and the connection reliability of combined type wind wheel blade widely, multiple wedge slot open loop wedge-riser flange dish has not only expanded the application area that wedge ring connects, and has inherited that Wedge-Ring Connection Structure is compact, aeroperformance is good, load and unload simple and efficient advantage.
2, the concavo-convex inserting slot construction radially arranging on connecting end surface at flange plate has further improved the twisting strength of blade.
3, inside and outside flange plate adopts split-type structural, be more suitable in many curvecd surface type of blade shell assemble, also can guarantee the tension force that wedge shape band produces in installation.
4, by the opening in segmentation, wedge band location plug is installed, make flange plate form the structure of sealing, greatly improved the rigidity of flange plate, prevent scurrying out of wedge shape band, the profile of leading edge and trailing edge location plug and blade inlet edge and trailing edge curved surface keep consistency simultaneously, have also guaranteed the aerodynamic configuration of blade, make the blade shell outer surface after connecting smooth smooth, aeroperformance is good, and fluid resistance is identical with overall structure blade with noise.
5, combined type wind wheel blade of the present invention has connection reliably, compact structure, lightweight, the advantages such as compound mode simple and fast, can reduce production difficulty, enhance productivity, reduce production costs, realize the batch production of the large-scale wind wheel blade of modularization, substantially do not need to safeguard that therefore maintenance cost is lower; Can improve transport of blades performance and travelling speed, reduce cost of transportation, promote the development of Large-scale Wind Turbines and popularize.
Accompanying drawing explanation
Above-mentioned is only the general introduction of technical solution of the present invention, and in order to better understand technological means of the present invention, below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Fig. 1 is the inside and outside flange plate catenation principle schematic diagram of combined type wind wheel blade.
Fig. 2 is the split type outward flange dish structural representation with connecting plate.
Fig. 3 is the split type inner flange structural representation with connecting plate.
Fig. 4 is wedge shape band combination schematic diagram.
Fig. 5 is leading edge location plug schematic diagram.
Fig. 6 is trailing edge location plug schematic diagram.
Fig. 7 is two segments combined wind wheel blade schematic diagram.
Embodiment
For the object, technical solutions and advantages of the present invention are better set forth, in conjunction with instantiation and accompanying drawing, the present invention is elaborated.
The problem existing for overcoming existing combined type wind wheel blade Placement, the invention provides a kind of combined type wind wheel blade, adopts the flanged connecting structure of wedge shape band jointing type to connect between each combination section.
The two segments combined wind wheel blade of only take is below elaborated as example, two sections of combinations of other multistage combined references.
As shown in Figure 7, wind wheel blade comprises the first combination section 1 and the second combination section 2, and in both docking end faces, wherein the side end face near blade root connects inner flange 3, away from a side end face connection outward flange dish 4 for blade root.Flange plate and blade shell Placement adopt pre-buried technology.
Coordinate shown in Fig. 1,2,3, inner flange 3 plugs together with outward flange dish 4, and inner flange 3 outer side walls and outward flange dish 4 madial walls that plug together part cross, inner flange 3 outer side walls are provided with the groove 31 arranging along width of blade direction, outward flange dish 4 madial walls are provided with the groove 41 arranging along width of blade direction, mutually involutory between groove 31,41, the rectangle groove that Formation cross-section is rectangle.
As shown in Fig. 1,2,3, on inner flange 3 outer side walls and on outward flange dish 4 madial walls, be respectively provided with twice groove, described groove lays respectively at head and the root of flange plate, after inside and outside flange plate is pegged graft, on described inner flange 3, two grooves 31 are mutually involutory with two grooves 41 on outward flange dish 4, form two rectangle grooves arranged side by side.
Refer to shown in Fig. 2, the leading edge and the trailing edge place that are positioned at outward flange dish 4 have leading edge opening 51, trailing edge opening 52, and leading edge opening 51, trailing edge opening 52 are divided into outward flange dish 4 split-type structural of upper and lower two sections; As shown in Figure 3, in order to facilitate the manufacture of blade, inner flange 3 is also split-type structural, in inner flange 3 leading edges and trailing edge place, is divided into upper and lower two sections.Wherein 3 leading edges of the inner flange shown in Fig. 3 are provided with plug docking end face.In addition,, after inside and outside flange plate 3,4 is pegged graft, on the radial end face coordinating at both, also can be provided with the inserting slot construction 10 of concavo-convex cooperation.As, sagittal plane one end, inner side of flange plate 4 is provided with a circle groove outside, accordingly, is provided with a circle projection on the sagittal plane of the inner side of inner flange 3; The outer radial face the other end of flange plate 4 is provided with a circle projection outside, accordingly, is provided with a circle groove in the outer radial face of inner flange 1; Wherein, groove and protruding position can be replaced.By the setting of said structure, can guarantee radially connectivity.During in addition, if any sealing requirements, can further set up seal ring 101.
Two openings on outward flange dish 4 are divided into upper and lower two sections by rectangle groove, and these two openings insert the insert port of rectangle groove as wedge shape band; Upper and lower two sections of each rectangle groove are inserted respectively one group of wedge shape band, every group of wedge shape band is comprised of two of left and right wedge shape band, and two of the left and right of every group wedge shape band inserts in rectangle groove from described leading edge opening 51 and trailing edge opening 52 respectively, forms interference fit with rectangle groove; Particularly, above-mentioned inner flange 3, outward flange dish 4 need connect by the wedge shape band shown in Fig. 4, every group of wedge band is comprised of the identical wedge metal band 61,62 of two of left and right specification, the preferred right-angled triangle of wedge shape band, two of left and right wedge metal band 61,62 in every group of wedge shape band oppositely inserts in rectangle groove from the opening at same section of rectangle groove two ends respectively, forms interference fit with rectangle groove.
Above-mentioned connecting means utilizes open loop type double flute wedge-riser flange dish plug-in mounting to form folding wedge groove, then wedge band is inserted, this linkage structure is compact, it is simple and efficient to load and unload, leading edge, the trailing edge that opening is arranged on to the outward flange dish just wedge shape band of writing out a prescription is installed, and the tension force that wedge shape band inserts after rectangle groove can meet with intensity the demand that two combination section are reliably connected.In addition, the quantity of described rectangle groove also can be set to more, will form three wedge grooves while respectively establishing one groove as the head at inside and outside flange plate, middle part, root.The design of a plurality of wedge grooves has increased docking length and the wedge band quantity of flange plate, and the guiding of flange plate is lengthened, and pretightening force strengthens, and has greatly improved join strength, torsional property and the connection reliability of combined type wind wheel blade.
Leading edge opening 51 in rectangle groove segmentation place is fixed with leading edge location plug 71 (coordinating shown in Fig. 5), and it is consistent with vane airfoil profile curved surface, and profile is curved face type.At trailing edge opening 52 places, be fixed with trailing edge location plug 72 (coordinating shown in Fig. 6), it is consistent with vane airfoil profile curved surface, and profile is many curved face types.Wherein, leading edge location plug 71, trailing edge location plug 72 couple together with bolt with inner flange respectively, particularly, be equipped with respectively bolt pass through hole at upper and lower two sections of outward flange dishes 4 two ends, joint; At inner flange 3 two ends, joint, be equipped with respectively tapped hole.Leading edge location plug 71 adopts two hexagon socket head cap screws to connect.Trailing edge location plug 72 adopts two hexagon socket head cap screws to connect.Blade shell outer surface after connection is smooth smooth, and aeroperformance is good, and fluid resistance is identical with overall structure blade with noise.
For guaranteeing join strength and the reliability of flange plate and blade shell, as shown in Fig. 2,3,7, at inside and outside flange plate tail end (near blade shell connecting end) welding polylith rectangle connecting plate 8, connecting plate 8 is inserted in the laying 9 of glass (carbon) fiber of connected blade, and bonding effect and the blade shell of the epoxy resin by embedding become one.
Flange plate and blade shell join domain are used fiber-reinforced layer to realize, and fiber-reinforced layer laying is: face centered by blade girder and core, and symmetrical lamination is laid, and enhancing direction is glass (carbon) fabric of 0/ ± 45 °.Join domain far-end to the fiber reinforcement layer thickness of near-end increases progressively gently, the fiber-reinforced layer of most proximal end is blanket layer, when laying be taped against two/for the moment the flange plate with connecting plate 8 is arranged in leaf production frock, then in connecting plate 8 being layered on therebetween while continuing laying.With negative pressure instillation process, can produce combined type wind wheel blade split housing, then through shear web installation, matched moulds, solidify, can produce after the technique such as the demoulding each combination section of combined type wind wheel blade.
After each combination section of combined type wind wheel blade completes, one end of lightning current down lead is fixed by bolts on flange plate, the lightning current down lead the other end or join with blade tip arrester, or join with the flange plate of the same combination section the other end, or join with blade root.Because flange plate is the highest point that unit is prepared and be arranged on to metallic material, will inevitably suffer the impact of lightning current, be the safety of protection blade and unit, inside and outside flange plate integral body can be used as arrester and ground wire and joins a lightning current path is provided.
In sum, combined type wind wheel blade of the present invention, to form rectangle groove by outward flange dish and inner flange plug-in mounting, wedge shape band is inserted and can complete the assembling of combined type wind wheel blade therebetween, each combination section blade can guarantee that blade aerodynamic configuration in dynamic operation is smooth, smooth after connecting, and does not affect aeroperformance and mechanical property.When wind wheel blade is comprised of two combination section, take that two pairs of grooves to be set on the interior outward flange of a pair of cooperation be example, and form two rectangle grooves, need altogether to insert four groups of wedge shape bands in upper and lower section of rectangle groove, its installation step is as follows:
1), when wind field is installed, use blade butting tooling that the first combination section 1 and the second combination section 2 are positioned with importing the inner flange 3 being connected in the first combination section 1 is inserted in the outward flange dish 4 connecting in the second combination section 2;
2) by first group of two wedge shape band, from tip, leading edge opening 51 and the trailing edge opening 52 from outward flange dish 4 epimeres inserts respectively the first rectangle groove epimere that is arranged in flange plate one end;
3) by second group of two wedge shape band, from tip, the leading edge opening 51 from outward flange dish 4 hypomeres and trailing edge opening 52 insert respectively the first rectangle groove hypomere;
4) by the 3rd group of two wedge shape bands, from tip, leading edge opening 51 and the trailing edge opening 52 from outward flange dish 4 epimeres inserts respectively the second rectangle groove epimere that is arranged in the flange plate the other end;
5) by the 4th group of two wedge shape bands, from tip, the leading edge opening 51 from outward flange dish 4 hypomeres and trailing edge opening 52 insert respectively the second rectangle groove hypomere, finally with press-in device, wedge shape band are all pressed in rectangle groove;
6) with bolt, leading edge is located to leading edge opening 51 places that plug 71 is arranged on outward flange dish 4;
7) with bolt, trailing edge is located to trailing edge opening 52 places that plug 72 is arranged on outward flange dish 4; Can complete the assembly working of combined type wind wheel blade.
Existing wind power generating set, combined type wind wheel blade wherein all can adopt above-mentioned Placement, has that linkage structure is simple, reliability is strong, and simple installation is the advantage of row easily, can promote the development of Large-scale Wind Turbines and universal.
The above; it is only preferred embodiment of the present invention; not the present invention is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection scope of the present invention.
Claims (12)
1. a combined type wind wheel blade, described blade is two sections of above combining forms, it is characterized in that, and an end face in the docking end face of described adjacent combination section connects outward flange dish, and other end connects inner flange;
Described outward flange dish and inner flange plug together, and the inner flange outer side wall and the outward flange dish madial wall that plug together part cross, on described inner flange outer side wall and on outward flange dish madial wall, be respectively arranged with at least two grooves along width of blade direction, mutually involutory between groove on described inside and outside flange plate, form the rectangle groove that a plurality of cross sections are rectangle;
The leading edge of described outward flange dish and trailing edge place are respectively equipped with leading edge opening and trailing edge opening, and described each rectangle groove is divided into upper and lower two sections by leading edge opening, trailing edge opening; Described wind wheel blade also comprises many group wedge shape bands, upper and lower two sections of described each rectangle groove are inserted respectively one group of wedge shape band, every group of wedge shape band is comprised of two of left and right wedge shape band, and two of the left and right of every group wedge shape band inserts in rectangle groove from described leading edge opening and trailing edge opening respectively, forms interference fit with rectangle groove; The leading edge opening of described outward flange dish and trailing edge opening are also fixed with respectively leading edge location plug and trailing edge location plug.
2. combined type wind wheel blade according to claim 1, it is characterized in that, two ends, left and right on described inner flange outer side wall and on outward flange dish madial wall are all respectively arranged with two grooves along width of blade direction, two grooves on described inner flange on two grooves and outward flange dish are mutually involutory, form two rectangle grooves.
3. combined type wind wheel blade according to claim 1, is characterized in that, after described inside and outside flange plate is pegged graft, is also provided with the inserting slot construction of concavo-convex cooperation at both on the radial end face coordinating.
4. combined type wind wheel blade according to claim 3, is characterized in that, in described concavo-convex inserting slot construction, is provided with seal ring.
5. combined type wind wheel blade according to claim 1, is characterized in that, described inside and outside flange plate is split-type structural, and each flange plate is divided into upper and lower two sections in its leading edge and trailing edge place.
6. combined type wind wheel blade according to claim 1, it is characterized in that, the leading edge that described leading edge location plug, trailing edge location plug are inserted in respectively outward flange dish is fixedly connected with trailing edge opening and with inner flange, and described leading edge is located plug, trailing edge location plug is consistent with vane airfoil profile curved surface.
7. combined type wind wheel blade according to claim 1, is characterized in that, described flange plate is embedded in the combination section of described wind wheel blade.
8. according to the combined type wind wheel blade described in claim 1~7 any one, it is characterized in that, the close blade connecting end of described flange plate is provided with connecting plate, and described connecting plate is inserted in the fiber laying of connected blade, and the bonding and blade shell by resin connects as one.
9. combined type wind wheel blade according to claim 8, is characterized in that, described connecting plate is rectangular, and is polylith, is welded on respectively on the end face that flange plate is connected with blade shell; Described connecting plate is inserted in 1/2nd places of fiber lay down layer thickness.
10. according to the combined type wind wheel blade described in claim 1~7 any one, it is characterized in that, also comprise lightning current down lead, one end of described lightning current down lead is fixed by bolts on flange plate, the other end of lightning current down lead joins with the blade tip arrester that is arranged on blade tip place, or join with the flange plate of the same combination section the other end, or join with blade root.
11. according to the combined type wind wheel blade described in claim 1~7 any one, it is characterized in that, the integral body that described inside and outside flange plate forms is joined as arrester and ground wire.
12. 1 kinds of wind power generating set, is characterized in that, contain the combined type wind wheel blade described in claim 1~11 any one.
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Publication number | Priority date | Publication date | Assignee | Title |
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CN113339190A (en) * | 2021-08-04 | 2021-09-03 | 常州市宏发纵横新材料科技股份有限公司 | High-strength connecting structure and sectional type wind power blade |
CN113982819A (en) * | 2020-07-27 | 2022-01-28 | 乌本产权有限公司 | Rotor blade for a wind turbine and associated wind turbine |
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CN102287322A (en) * | 2004-06-30 | 2011-12-21 | 维斯塔斯风力系统有限公司 | Wind turbine blade with two separate parts and assembly method of same |
CN103670910A (en) * | 2013-12-17 | 2014-03-26 | 上海玻璃钢研究院东台有限公司 | Sectional wind turbine blade connecting device and method |
CN104019001A (en) * | 2014-06-26 | 2014-09-03 | 国电联合动力技术有限公司 | Combined type wind wheel blade and wind generating set comprising same |
CN204140288U (en) * | 2014-09-26 | 2015-02-04 | 国电联合动力技术有限公司 | A kind of combined type wind wheel blade and the wind power generating set containing this blade |
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CN102287322A (en) * | 2004-06-30 | 2011-12-21 | 维斯塔斯风力系统有限公司 | Wind turbine blade with two separate parts and assembly method of same |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN113982819A (en) * | 2020-07-27 | 2022-01-28 | 乌本产权有限公司 | Rotor blade for a wind turbine and associated wind turbine |
CN113339190A (en) * | 2021-08-04 | 2021-09-03 | 常州市宏发纵横新材料科技股份有限公司 | High-strength connecting structure and sectional type wind power blade |
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Application publication date: 20141217 |