CN113357075A - Wind power blade and wind driven generator - Google Patents
Wind power blade and wind driven generator Download PDFInfo
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- CN113357075A CN113357075A CN202110863856.1A CN202110863856A CN113357075A CN 113357075 A CN113357075 A CN 113357075A CN 202110863856 A CN202110863856 A CN 202110863856A CN 113357075 A CN113357075 A CN 113357075A
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- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
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- 238000001802 infusion Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
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- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 230000004323 axial length Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000009787 hand lay-up Methods 0.000 description 1
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- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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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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Abstract
The invention provides a wind power blade and a wind driven generator, and belongs to the technical field of wind power generation. The wind power blade is formed by splicing at least two blade sections, the blade sections comprise a main beam, the main beam comprises a main body portion and a connecting portion which are connected with each other, the main body portion is far away from the main body portion, the width of the connecting portion is gradually widened, the thickness of the connecting portion is gradually thinned, and the blade sections are adjacent to each other and are connected through the connecting portion. In the invention, at the sectional position of the blade, the main beam adopts a variable cross-section structure with the width widened and the thickness thinned along the direction far away from the main body part of the main beam, and when the adjacent blade sections are connected, the variable cross-section structure increases the connecting area of the main beam parts of the two blade sections, reduces the concentrated load borne by the main beam and improves the safety performance of the main beam and the blade.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a wind power blade and a wind driven generator.
Background
The wind power blade is a main component of wind power generation, the length of the blade is continuously increased along with the progress of materials, technologies and processes, and the maximum blade length reaches more than 100m at present. With the increase of the length of the blade, the transportation of the blade becomes difficult, and the transportation of the large blade becomes a great problem for limiting the development of the wind power industry. And the adoption of sectional production, sectional transportation and field assembly is an effective method for solving the problem.
At present, the segmented blades in the industry are still in a sample piece verification stage, and are only produced in batches by a few foreign manufacturers. At present, most of connection of the segmented blades adopts a mode of embedding metal bolts or a mode of lapping and reinforcing a main beam. The blades connected in the mode have the problems that the mass of the blades is greatly increased, the load dispersing capacity borne by the main beams of key components of the blades is weak, the safety performance of the blades is reduced and the like.
Disclosure of Invention
The invention solves the problems that the connection of the sectional blades mostly adopts a pre-buried bolt or lap joint reinforcement mode, and the problems of large blade mass increase, concentrated main beam load, reduced blade safety performance and the like exist.
In order to solve the problems, the invention provides a wind power blade which is formed by splicing at least two blade sections, wherein each blade section comprises a main beam, each main beam comprises a main beam cap, each main beam cap comprises a main body part and a connecting part which are mutually connected, the width of each connecting part is gradually widened and the thickness of each connecting part is gradually reduced along the direction far away from the main body part, and the two adjacent blade sections are connected through the connecting parts.
Preferably, the connecting portion includes a transition section connected to the main body portion and a connecting section connected to the transition section, a width of the transition section gradually widens along a direction away from the main body portion, a thickness of the transition section gradually becomes thinner along a direction away from the main body portion, a width of the connecting section is consistent with a maximum width of the transition section, and a thickness of the connecting section is consistent with a minimum thickness of the transition section.
Preferably, the connecting parts of two adjacent blade segments are provided with transition structures matched with each other, so that the two adjacent blade segments are in wedge-shaped nested connection.
Preferably, the main beam is formed by laying a main beam cloth layer, and the number of laying layers of the main beam cloth layer is reduced along the direction far away from the main body part, so that the transition structure is formed on the surface of the connecting part.
Preferably, the connecting portions of two adjacent blade segments are adhered to each other.
Preferably, two of the connecting portions of the blade segment are both adapted to be connected with the upper sides or the lower sides of two of the connecting portions of the adjacent blade segment to realize the insertion connection of the two blade segments, or one of the connecting portions of the blade segment is adapted to be connected with the upper side of the connecting portion corresponding to the adjacent blade segment, and the other connecting portion is adapted to be connected with the lower side of the connecting portion corresponding to the adjacent blade segment to realize the sleeve connection of the two blade segments.
Preferably, the main beam is made of a pultrusion plate or is formed by glass fiber infusion.
Preferably, the blade comprises an outer skin, and the outer skin is wrapped at a gap between two adjacent blade segments.
Preferably, the main beam further comprises a web plate arranged between the two main beam caps, and the web plates of the adjacent two blade segments are mutually clamped.
Compared with the prior art, the wind power blade has the following beneficial effects:
the invention improves the connection mode of the main beam of the wind power blade, at the sectional position of the blade, the main beam adopts a variable cross-section structure with gradually widened width and gradually thinned thickness along the direction far away from the main body part of the main beam to connect adjacent blade sections, and the variable cross-section structure increases the connection area of the main beam parts of two blade sections, so that the stable connection of the adjacent two blade sections is facilitated, the concentrated load borne by the main beam is reduced, and the safety performance of the main beam and the blade is improved.
The invention also provides a wind driven generator which comprises the wind power blade.
Compared with the prior art, the wind driven generator has the same beneficial effects as the wind power blade in the prior art, and the description is omitted.
Drawings
FIG. 1 is a schematic structural view of a spar cap of a wind turbine blade according to an embodiment of the invention;
FIG. 2 is a schematic view of a blade segment connection of a wind turbine blade according to an embodiment of the present invention;
FIG. 3 is a schematic view of a wind turbine blade after connection according to an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a wind turbine blade according to an embodiment of the invention;
FIG. 5 is a schematic view of a blade root section of the electro-pneumatic blade of FIG. 4;
FIG. 6 is a schematic tip section of the electro-pneumatic blade of FIG. 4;
FIG. 7 is a first schematic view of the root section and tip section of the wind turbine blade shown in FIG. 4;
FIG. 8 is a second schematic view illustrating the connection of the root section and the tip section of the wind turbine blade in FIG. 4;
fig. 9 is a third schematic view of the connection between the root section and the tip section of the wind turbine blade in fig. 4.
Description of reference numerals:
1. a spar cap; 11. a main body portion; 12. a connecting portion; 121. a transition section; 122. a connecting section;
100. a leaf root segment; 110. a first connection portion; 120. a first blade; 130. a first main body portion; 200. a tip section; 210. a second connecting portion; 220. a second blade; 230. a second body portion.
Detailed Description
The blade mainly comprises an upper shell, a lower shell, a main beam and a web plate, wherein the main beam is embedded in the middle of the upper shell and the lower shell and is a main bearing part of the blade. The blades become long, and the manufacturing and conveying cost of the blades is increased. To solve this problem, it is an effective way to manufacture the blades in sections and to assemble the segmented blades into a complete blade when in use.
Because the load that the girder bore is very big, therefore the girder is generally made by high strength composite material, and the number of piles is many and thickness is thicker. In the connection of the sectional blade, the connection of the main beam is the biggest problem of the sectional blade.
In the prior art, the connection is mostly carried out in a mode of pre-embedding metal bolts or in a mode of main beam lap joint reinforcement. For the bolt connection, since bolts, nuts, etc. are added and the thickness of glass fiber reinforced plastics needs to be increased at the positions of the bolt connection, the weight of the blade is increased. To the mode of girder overlap joint reinforcement, can make girder load distribution comparatively concentrate, reduce blade security performance, increase blade aerodynamic loss etc.. Therefore, the invention provides a segmented blade, and the connection mode of the segmented blade is improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1 to 3, an embodiment of the present invention provides a wind turbine blade, which includes at least two blade segments, each blade segment includes a main beam, the main beam includes a main beam cap 1, the main beam cap 1 includes a main body portion 11 and a connecting portion 12, the connecting portion 12 gradually widens in width and gradually thins in thickness along a direction away from the main body portion 11, so that the connecting portion 12 is substantially in a wedge-shaped structure, and two adjacent blade segments are connected by the connecting portion 12.
It should be noted that, for a blade, the dimension in the root and tip directions of the blade is the length, as shown in the Y direction in fig. 1. The dimension in the direction of the leading and trailing edges of the blade is the width, as shown in the X direction in fig. 1. The dimension in the direction perpendicular to the width of the blade is the thickness, as shown in the Z-direction in fig. 1. As can be seen from fig. 1, the main body 11 has a certain thickness, but the connecting portion 12 is seen to be gradually thinner in thickness and wider in width in a direction away from the main body 11. The wind-powered electricity generation blade of this embodiment, the girder adopts the variable cross section structure in segmentation position department, and connecting portion 12 of girder is along keeping away from 11 direction width widen, the thickness attenuation of main part promptly, from this, has increased the connection area of two blade section girder parts to in the stable connection of two adjacent blade sections, and make the concentrated load that the girder receives disperse, realize the load equipartition, improve girder and blade security performance.
It will be appreciated that the spar typically comprises two spar caps 1 and a web arranged between the spar caps 1, the web being arranged to support the spar caps 1, the webs being arranged to snap into engagement with each other when two adjacent blade sections are joined. It will also be appreciated that the webs are generally i-shaped and supported between the spar caps 1 and that the webs of the two blade segments are clamped together with the gap between the i-shapes. The two main beam caps 1 are respectively arranged on the upper shell and the lower shell of the blade section, and for convenience of description, the upper main beam cap is arranged on the upper shell of the blade section, and the lower main beam cap is arranged on the lower shell of the blade section. It will be appreciated that the spar of each blade section is of variable cross-section at the connection 12, such that when each blade section is connected to an adjacent blade section, the upper spar cap and the lower spar cap are connected by the variable cross-section.
In some embodiments, the two blade segments are connected by nesting through the main beam connecting part 12 with the widened and thinned profile, that is, the main beam connecting part 12 of one blade segment is connected with the main beam connecting part 12 of the other blade segment in a sleeving manner. For example, as shown in FIG. 2, the two spar caps 1 of the first blade 120 segment are inserted between the two spar caps 1 of the second blade 220 segment, i.e., the upper spar cap of the first blade 120 segment is located on the lower side of the upper spar cap of the second blade 220 segment and the lower spar cap of the first blade 120 segment is located on the upper side of the lower spar cap of the second blade 220 segment. It will be appreciated that the connection portions 12 of the two blade segments are nested within one another, with one blade segment necessarily being nested within the other, and it will be appreciated that the nesting is partial, i.e. the connection portions 12 of the spar are partially nested.
In a preferred embodiment, the connection portions 12 of the two blade segments are bonded by means of an adhesive glue. Namely, the upper main beam caps and the lower main beam caps of the two blade segments are respectively bonded together through high-strength bonding glue, so that the two blade segments are connected.
In some embodiments, transition structures matched with each other are arranged on the main beam connecting portions 12 of two adjacent blade segments, so that the connecting form between the two connecting portions 12 is wedge-shaped nesting, and the connecting stability of the two blade segments is increased.
The main beam can be a pultruded slab main beam, a prefabricated vacuum infusion main beam or a main beam formed with the blades after being layered, and the embodiment does not limit the main beam and can be a pultruded slab main beam or a glass fiber vacuum infusion main beam; the main beam can be preformed or can be poured and formed together with the blade.
In some embodiments, the transition structure on the main beam connection 12 may be formed by grinding or prefabrication. In other embodiments, the transition structure is in the form of a bevel, and since the spar cap 1 is generally formed by laying the spar layers, in order to form a bevel on the connection portion 12 of the spar, the spar layers may be sequentially laid in a step-like manner at the connection portion 12 of the spar of each blade segment, that is, the adjacent layers are staggered and laid in a step-like manner, so as to form a bevel on the surface of the connection portion 12. The oblique angles of the connection portions 12 of the two blade segments are matched to each other to achieve the connection of the two blade segments. And the bonding form between two connecting parts 12 is a wedge-shaped nested structure, so that the strength and the stability between the connecting parts 12 are increased.
It should be noted that, in addition to the nesting manner, the connection between the two blade segments may also be implemented by other connection manners, for example, the upper spar cap of the first blade 120 segment is located at the lower side of the upper spar cap of the second blade 220 segment, and the lower spar cap of the first blade 120 segment is also located at the lower side of the lower spar cap of the second blade 220 segment, or the upper spar cap of the first blade 120 segment is located at the upper side of the upper spar cap of the second blade 220 segment, and the lower spar cap of the first blade 120 segment is located at the upper side of the lower spar cap of the second blade 220 segment. In this case, the first blade 120 section and the second blade 220 section are not inserted into one another, but are plugged together by the overlapping of the two connections 12.
According to the wind power blade, the main stressed component main beam of the blade section is of a variable cross-section structure at the joint, the thickness of the main beam is reduced, the width of the main beam is widened, the bonding width of the joint of the main beams of the two blade sections is increased, the bonding axial length can be reduced, and component manufacturing and on-site bonding are facilitated. The axial direction refers to the same direction as the longitudinal direction of the blade. In addition, the main beam bonding areas are laid in a layer mode, so that the bonding areas between the main beam connecting portions 12 of the two blade sections are in wedge shapes matched with each other, and the strength and the stability of connection are improved due to the wedge-shaped connection mode.
In a specific embodiment, the number of the blade segments may be two or three, for example, as shown in fig. 4, the wind turbine blade includes two blade segments, which are referred to as a root segment 100 and a tip segment 200, respectively, for convenience of description below. It should be understood that root section 100 is adjacent the root side and tip section 200 is adjacent the tip side.
As shown in fig. 5, the X-axis direction in fig. 5 is the width direction, the Y-axis direction is the length direction, and the Z-axis direction is the thickness direction. The root section 100 comprises a first blade 120 and a first spar arranged within the first blade 120, the first spar comprising two first spar caps 1. It should be noted that the blade root section 100 should include two first spar caps 1, only one of which spar caps 1 is shown in FIG. 5. The first spar cap 1 includes a first body portion 130 and a first connection portion 110, and the first connection portion 110 extends from an end portion of the first body portion 130 toward a direction away from the blade root. The first spar cap 1 may have a structure, as shown in fig. 1, in which the first body portion 130 has a thickness, the thickness of the first connection portion 110 is gradually reduced, and the width of the first connection portion 110 is gradually increased, in a direction away from the first body portion 130.
Preferably, in order to facilitate the connection between the first connection portion 110 and the main beam connection portion 12 of the blade tip section 200, the first connection portion 110 includes a transition section 121 having a gradually changing width and thickness with respect to the first main body portion 130, and a connection section 122 having a relatively unchanged width and thickness, that is, the width of the transition section gradually widens in a direction away from the main body portion, the thickness of the transition section gradually thins in a direction away from the main body portion, the width of the connection section is consistent with the maximum width of the transition section, and the thickness of the connection section is consistent with the minimum thickness of the transition section. The connection of the two main beam connections 12 is achieved by an adhesive bond between the two connection sections 122. Because the width and thickness of the connecting section 122 are relatively small or even constant, the connecting strength and stability between the two connecting sections 122 are higher.
Similar to the blade root segment 100, as shown in fig. 6, the X-axis direction in fig. 6 is the width, the Y-axis direction is the length, and the Z-axis direction is the thickness. The tip section 200 includes a second blade 220 and a second main beam disposed in the second blade 220, the second main beam includes a second main body 230 and a second connecting portion 210, and the second connecting portion 210 extends from an end of the second main body 230 toward a direction away from the tip of the blade.
As shown in fig. 7, in order to connect the blade root section 100 and the blade tip section 200, the blade tip section 200 is inserted into the blade root section 100, and the second main beam of the blade tip section 200 is respectively bonded to the first main beam of the blade root section 100 by high-strength bonding glue. After the root section 100 and the tip section 200 are connected, the outer joint seams are reinforced by hand lay-up or prepreg, and the connection of the outer skin of the blade is completed, as shown in fig. 3, which is a schematic structural diagram of the blade root section 100 and the blade tip section 200 after the connection, and the outer skin is wrapped at the gap between the root section 100 and the tip section 200.
Preferably, the first main beam is laid in a staggered-step manner at the position of the first connection portion 110, that is, the adjacent two main beams are laid in a staggered manner, so that each layer is in a step shape, and therefore a first oblique angle is formed at the first connection portion 110. Similarly, the second main beam forms a second oblique angle matching the first oblique angle at the second connection portion 210, so that the connection portion between the first connection portion 110 and the second connection portion 210 is wedge-shaped, and the strength and stability of the connection portion 12 are increased.
The connection between the root section 100 and the tip section 200 may be various, mainly because the bevel angle provided at the main beam connection 12 may be various combinations. In this embodiment, the following forms are possible:
one of the connecting portions of the blade sections is suitable for being connected with the upper side of the connecting portion corresponding to the adjacent blade section, and the other connecting portion is suitable for being connected with the lower side of the connecting portion corresponding to the adjacent blade section, so that the two blade sections can be sleeved. In a specific embodiment, as shown in fig. 7, the tip section 200 is inserted into the root section 100, at this time, the upper spar cap of the tip section 200 is located at the lower side of the upper spar cap of the root section 100 and is bonded to the upper spar cap, the lower spar cap of the tip section 200 is located at the upper side of the lower spar cap of the root section 100 and is bonded to the lower spar cap of the root section 100, and the hatched area shown in fig. 7 is the bonding area between the root section 100 and the tip section 200.
As shown in fig. 8, the tip section 200 is inserted into the root section 100, and at this time, the upper spar cap of the tip section 200 is located on the upper side of the upper spar cap of the root section 100 and is bonded to each other, the lower spar cap of the tip section 200 is located on the lower side of the lower spar cap of the root section 100 and is bonded to each other, and the hatched area shown in fig. 8 is the bonding area between the root section 100 and the tip section 200. As can be seen from fig. 7 and 8, when the root section 100 and the tip section 200 are sleeved or inserted, the upper and lower bonding regions are not parallel, i.e. the extending directions of the two bonding regions intersect, so as to exhibit a certain taper.
Both connection portions of a blade segment are adapted to be connected with the upper or lower sides of both connection portions of an adjacent blade segment, and in a specific embodiment, as shown in fig. 9, the upper spar cap of the tip segment 200 is located on the upper side of the upper spar cap of the root segment 100 and is bonded to each other, and the lower spar cap of the tip segment 200 is located on the upper side of the lower spar cap of the root segment 100 and is bonded to each other, whereby the upper and lower bonding regions are arranged in parallel. Of course, it is also possible that the upper spar cap of the tip section 200 is located on the underside of the upper spar cap of the root section 100 and they are bonded to each other, and the lower spar cap of the tip section 200 is located on the underside of the lower spar cap of the root section 100 and they are bonded to each other.
In the embodiment, the two sections of the blade are connected in a bonding mode, so that the weight of the blade is increased less on the whole, and the field operation is relatively convenient. In addition, the bonded part is in a wedge-shaped nested structure, so that the strength and the stability of the connection of the two sections are improved.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. The utility model provides a wind power blade, its characterized in that comprises two at least blade section concatenations, the blade section includes the girder, the girder includes girder cap (1), girder cap (1) includes interconnect's main part (11) and connecting portion (12), follows and keeps away from main part (11) direction, the width widen gradually, the thickness attenuation gradually of connecting portion (12), adjacent two the blade section passes through connecting portion (12) are connected.
2. The wind-power blade according to claim 1, characterized in that the connecting portion (12) comprises a transition section (121) connected with the main body portion (11) and a connecting section (122) connected with the transition section (121), the width of the transition section (121) gradually widens in a direction away from the main body portion (11), the thickness of the transition section (121) gradually thins in a direction away from the main body portion (11), the width of the connecting section (122) is consistent with the maximum width of the transition section (121), and the thickness of the connecting section (122) is consistent with the minimum thickness of the transition section (121).
3. The wind turbine blade as claimed in claim 1, wherein the connecting portions (12) of two adjacent blade segments are provided with transition structures matched with each other, so that the two adjacent blade segments are in wedge-shaped nested connection.
4. The wind blade according to claim 3, wherein the main beam is formed by laying a main cloth layer, and the number of layers of the main cloth layer is reduced along the direction away from the main body part (11) so as to form the transition structure on the surface of the connecting part (12).
5. Wind turbine blade according to claim 1, wherein the connection portions (12) of two adjacent blade segments are mutually bonded.
6. The wind turbine blade according to claim 1, wherein both of the connection portions (12) of the blade segment are adapted to be connected with the upper side or the lower side of the connection portions (12) of the adjacent blade segment to realize the insertion of the two blade segments, or one of the connection portions (12) of the blade segment is adapted to be connected with the upper side of the connection portion (12) corresponding to the adjacent blade segment, and the other connection portion (12) is adapted to be connected with the lower side of the connection portion (12) corresponding to the adjacent blade segment to realize the insertion of the two blade segments.
7. The wind blade of claim 1 wherein the main beam is a main beam made of pultruded panels or a main beam made of glass fiber by infusion molding.
8. The wind turbine blade as claimed in claim 1, further comprising an outer skin covering a gap between two adjacent blade segments.
9. The wind turbine blade as claimed in claim 1, wherein the spar further comprises a web arranged between two spar caps (1), the webs of two adjacent blade segments being clamped to each other.
10. A wind power generator comprising a wind power blade according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110863856.1A CN113357075A (en) | 2021-07-29 | 2021-07-29 | Wind power blade and wind driven generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110863856.1A CN113357075A (en) | 2021-07-29 | 2021-07-29 | Wind power blade and wind driven generator |
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| CN113357075A true CN113357075A (en) | 2021-09-07 |
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Cited By (2)
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| CN114953508A (en) * | 2022-05-31 | 2022-08-30 | 上海电气风电集团股份有限公司 | Composite material prefabricated structural part, manufacturing method and sectional type blade |
| CN115110446A (en) * | 2022-07-19 | 2022-09-27 | 西南石油大学 | High steep side slope dangerous rock falling stone protective net system |
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| US20200072189A1 (en) * | 2018-08-28 | 2020-03-05 | General Electric Company | Spar Configuration for Jointed Wind Turbine Rotor Blades |
| CN112081710A (en) * | 2019-06-14 | 2020-12-15 | 西门子歌美飒可再生能源公司 | Rotor blade for a wind turbine |
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| CN101463795A (en) * | 2007-12-19 | 2009-06-24 | 通用电气公司 | Multi-segment wind turbine blade and method for assembling the same |
| CN105473847A (en) * | 2013-07-09 | 2016-04-06 | 维斯塔斯风力系统有限公司 | Wind turbine blade with sections that are joined together |
| US20200072189A1 (en) * | 2018-08-28 | 2020-03-05 | General Electric Company | Spar Configuration for Jointed Wind Turbine Rotor Blades |
| CN112081710A (en) * | 2019-06-14 | 2020-12-15 | 西门子歌美飒可再生能源公司 | Rotor blade for a wind turbine |
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