CN113685310B - Plug-in type combined material sectional type blade - Google Patents
Plug-in type combined material sectional type blade Download PDFInfo
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- CN113685310B CN113685310B CN202111138458.XA CN202111138458A CN113685310B CN 113685310 B CN113685310 B CN 113685310B CN 202111138458 A CN202111138458 A CN 202111138458A CN 113685310 B CN113685310 B CN 113685310B
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- 239000002131 composite material Substances 0.000 claims abstract description 28
- 238000003780 insertion Methods 0.000 claims description 23
- 230000037431 insertion Effects 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000008719 thickening Effects 0.000 claims 2
- 230000007547 defect Effects 0.000 abstract description 2
- 230000011218 segmentation Effects 0.000 description 13
- 239000007769 metal material Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to the technical field of wind power blades, in particular to a plug-in type composite sectional blade; the blade comprises a blade root section and a blade tip section, and the blade is spliced to form a blade whole; the blade root section and the blade tip section are internally provided with a first embedded beam and a second embedded beam which are arranged along the length direction of the whole blade respectively; one end of the first embedded beam is provided with an inserting groove, one end of the second embedded beam is provided with an inserting block, and the inserting block extends into the inserting groove; the inserting groove and the inserting block are fixedly connected through a first connecting piece; one end, facing the blade tip section, of the blade root section is provided with a first flange along the circumferential direction, one end, facing the blade root section, of the blade tip section is provided with a second flange along the circumferential direction, and the first flange is fixedly connected with the second flange through a second connecting piece. The invention aims to provide a plug-in type composite material sectional type blade aiming at the defects in the prior art, and the connection strength between the sections of the composite material sectional type blade is improved.
Description
Technical Field
The invention relates to the technical field of wind power blades, in particular to a plug-in type composite material sectional type blade.
Background
Wind energy is a high-quality renewable energy source, and is very suitable for coastal islands, grassland pastoral areas, mountain areas and plateau areas with water shortage, fuel shortage and inconvenient traffic to generate electricity by utilizing wind power according to local conditions. Wind power is an important field of renewable energy development, wind energy resources in China are abundant, the construction of wind power projects is accelerated, and the method has important significance for adjusting energy structures and changing economic development modes in China.
For the blades of the wind driven generator, because the blades are long, the blades are designed into a sectional form for convenient transportation, each section is transported separately, and then the blades are spliced at an installation site. The blades of the traditional wind driven generator are made of metal materials, the blades are too heavy and inconvenient to install and use, and therefore the traditional metal materials, such as glass fibers, carbon fibers or carbon-glass mixed composite materials, are replaced by the composite materials which are high in strength and lighter in weight. However, because the stress and force transmission mode difference between the composite material and the metal material is large, if the composite material sectional blade is still connected with the metal material sectional blade, the connection reliability between the sections is poor in the using process, and potential safety hazards are easily generated.
In view of the above problems, the present designer designs a plug-in composite segmented blade based on practical experience and professional knowledge of engineering application of such products, and with the application of theory, actively carries out research and innovation
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a plug-in type composite sectional blade aiming at the defects in the prior art, and solves the problems that if a composite sectional blade is connected by a metal sectional blade connecting structure, the connection reliability between sections is poor in the using process, and potential safety hazards are easily generated.
In order to achieve the purpose, the invention adopts the technical scheme that:
the method comprises the following steps: the blade root section and the blade tip section are spliced to form a blade whole;
the blade root section and the blade tip section are internally provided with a first embedded beam and a second embedded beam which are arranged along the length direction of the whole blade respectively; one end of the first embedded beam is provided with an inserting groove, one end of the second embedded beam is provided with an inserting block, and the inserting block extends into the inserting groove; the inserting groove and the inserting block are fixedly connected through a first connecting piece;
the blade root subsection is provided with a first flange towards one end of the blade tip subsection along the circumferential direction, the blade tip subsection is provided with a second flange towards one end of the blade root subsection along the circumferential direction, and the first flange is fixedly connected with the second flange through a second connecting piece.
Furthermore, a clamping block is further arranged at one end, facing the blade tip section, of the blade root section along the circumferential direction, a clamping groove is formed at one end, facing the blade root section, of the blade tip section along the circumferential direction, and the clamping block extends into the clamping groove.
Furthermore, structural adhesive is arranged between the fixture block and the side face attached to the clamping groove.
Further, the length of the insertion block in the overall length direction of the blade is larger than the length of the fixture block in the overall length direction of the blade.
Furthermore, the first connecting piece is a fixing screw, and the fixing screw sequentially penetrates through the blade root segment and the side face of the insertion groove from the inside of the blade root segment and is finally fixedly connected with the insertion block through threads.
Furthermore, a thickened section is arranged on the blade root section, and the fixing screw is arranged at the thickened section.
Furthermore, the second connecting piece is a bolt, a plurality of first through holes are formed in the first flange, a plurality of second through holes are formed in the second flange, and the bolt penetrates through the first through holes and the second through holes, so that the first flange is fixedly connected with the second flange.
Furthermore, the inner wall of the insertion groove is in clearance fit with the side wall of the insertion block.
Furthermore, the top and the bottom of the blade root section are both provided with the first embedded beams, and the top and the bottom of the blade tip section are both provided with the second embedded beams.
Furthermore, the flange plate also comprises a first flange plate and a second flange plate, and the cross sections of the first flange plate and the second flange plate are L-shaped; the first flange plate is fixedly arranged on the circumferential direction of the blade root segment, and one side of the first flange plate forms the first flange; the second flange plate is fixedly arranged on the circumferential direction of the blade tip section, and the second flange is formed on one side of the second flange plate.
Through the technical scheme of the invention, the following technical effects can be realized:
according to the designed plug-in type composite material sectional type blade, the plug-in grooves and the plug-in blocks are arranged on the first embedded beam and the second embedded beam, the plug-in blocks and the plug-in grooves are connected in a plug-in mode, the first embedded beam and the second embedded beam are connected into a whole through the first connecting piece and the second connecting piece, force transmission of the blade in the using process is mainly achieved through the first embedded beam and the second embedded beam, stress in the shearing direction can be well borne, and therefore connecting strength between the sections is effectively improved; through setting up first flange and second flange to use second connecting piece fixed connection, carry out auxiliary connection to blade root segmentation and apex segmentation, guarantee that each section of junction between the segmentation can laminate closely, further promote the connection reliability between the segmentation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a general schematic view of a plug-in composite segmented blade according to an embodiment of the invention;
FIG. 2 is a schematic view of a connection of a plug-in composite segmented blade according to an embodiment of the present invention;
FIG. 3 is a schematic view of a blade root segment joint configuration according to an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of the blade tip segment connection in an embodiment of the present invention;
FIG. 5 is a side view of a joint of a plug-in composite segmented blade according to an embodiment of the present invention;
FIG. 6 is a sectional view at A of FIG. 5 in example 1 of the present invention;
FIG. 7 is a sectional view at B of FIG. 5 in example 2 of the present invention;
reference numerals: the blade root segment comprises a blade root segment 1, a first embedded beam 11, an insertion groove 111, a first flange 12, a fixture block 13, a thickened segment 14, a blade tip segment 2, a second embedded beam 21, an insertion block 211, a second flange 22, a clamping groove 23, a first connecting piece 3, a second connecting piece 4, a first flange plate 5 and a second flange plate 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
a segmented blade made of a plug-in composite material, as shown in figures 1 to 6, comprises: the blade root section 1 and the blade tip section 2 are spliced to form a whole blade; the blade root section 1 and the blade tip section 2 are internally provided with a first embedded beam 11 and a second embedded beam 21 which are arranged along the length direction of the whole blade respectively; one end of the first embedded beam 11 is provided with an inserting groove 111, one end of the second embedded beam 21 is provided with an inserting block 211, and the inserting block 211 extends into the inserting groove 111; the inserting groove 111 and the inserting block 211 are fixedly connected through the first connecting piece 3;
one end of the blade root segment 1 facing the blade tip segment 2 is circumferentially provided with a first flange 12, one end of the blade tip segment 2 facing the blade root segment 1 is circumferentially provided with a second flange 22, and the first flange 12 and the second flange 22 are fixedly connected through a second connecting piece 4.
Specifically, for manufacturing each section of the composite material sectional type blade, a metal is used for building a sectional framework, then a composite material skin is covered on the framework to form a sectional structure shape, and finally the framework and the composite material skin are solidified and molded into a whole to realize the manufacturing of each section, wherein the framework is a part mainly used for sectional force transmission. If the connecting structure of the metal material sectional blade is directly adopted, the main force transmission can be carried out through the skin, and the connecting reliability is obviously poor.
In the invention, the first embedded beam 11 and the second embedded beam 21 are directly applied to the frameworks of the blade root segment 1 and the blade tip segment 2, the blade root segment 1 and the blade tip segment 2 are coated with composite material skins and then are solidified into a whole, and the first embedded beam 11 and the second embedded beam 21 play a main role in supporting and transferring force among the segments; set up inserting groove 111 and grafting piece 211 on first embedded roof beam 11 and the embedded roof beam 21 of second, peg graft mutually through inserting piece 211 and inserting groove 111, and use 3 fixed connection of first connecting piece, link into an organic whole first embedded roof beam 11 and the embedded roof beam 21 of second, make the blade mainly can realize through first embedded roof beam 11 and the embedded roof beam 21 of second in the biography power in the use, and can not pass through the covering, and can bear the atress of shearing direction better through the beam body that the grafting links into an organic whole, thereby effectively improve the joint strength between the segmentation. Through setting up first flange 12 and second flange 22 to use second connecting piece 4 fixed connection, carry out auxiliary connection to blade root segmentation 1 and apex segmentation 2, guarantee that each section of junction between the segmentation can laminate closely, further promote the connection reliability between the segmentation. The inserting groove 111 is arranged at the blade root section 1 which is closer to the rotation center of the blade, so that the position of the joint is closer to the rotation center of the blade, the influence on the joint is smaller when the blade rotates, and the connection reliability between the sections is further improved.
Preferably, a clamping block 13 is further arranged at one end, facing the blade tip segment 2, of the blade root segment 1 along the circumferential direction, a clamping groove 23 is arranged at one end, facing the blade root segment 1, of the blade tip segment 2 along the circumferential direction, and the clamping block 13 extends into the clamping groove 23. The cooperation of fixture block 13 and draw-in groove 23 can carry out further location between blade root segmentation 1 and the apex segmentation 2 to guarantee that the outside of blade root segmentation 1 and apex segmentation 2 junction can smooth transition, guarantee the holistic shape of blade, the lateral wall of fixture block 13 and draw-in groove 23 supports each other simultaneously, makes fixture block 13 and draw-in groove 23 department also can bear certain shearing force, with the roof beam body combined action that the grafting connects into an organic whole, further promotes the anti-shear and the torsional resistance of junction.
Structural adhesive is arranged between the side faces, attached to the clamping groove 23, of the clamping block 13, the side faces, attached to the clamping groove 23, of the clamping block 13 are tightly attached to the side faces, the sealing performance is guaranteed, meanwhile, the rigidity mutation of the joint of the clamping block 13 and the clamping groove 23 can be reduced, therefore, stress concentration is avoided, and the connection reliability is improved.
The length of the insertion block 211 in the length direction of the whole blade is greater than that of the fixture block 13 in the length direction of the whole blade, so that the insertion block 211 can be inserted into the insertion groove 111 firstly and then the fixture block 13 can be inserted into the clamping groove 23 in the insertion process of the blade root segment 1 and the blade tip segment 2; considering that the insertion difficulty of the fixture block 13 and the slot 23 is greater than the insertion difficulty of the insertion block 211 and the insertion groove 111, and the thickness of the fixture block 13 is relatively thin and easy to damage, the fixture block 13 is connected with the insertion groove 111 through the insertion block 211 to guide the relative movement between the blade root segment 1 and the blade tip segment 2, and then the blade tip segment 2 is slowly moved to insert the fixture block 13 into the slot 23, so that the fixture block 13 is prevented from being damaged due to too large collision.
As a preferred embodiment of the first connecting piece 3, the first connecting piece 3 is a fixing screw, and the fixing screw sequentially penetrates through the blade root segment 1 and the side surface of the insertion groove 111 from the inside of the blade root segment 1, and is finally fixedly connected with the insertion block 211 by a thread. The thickened section 14 is arranged on the blade root section 1, the fixing screw is arranged at the thickened section 14, and the thickened section 14 can effectively ensure the connection strength between the fixing screw and the skin of the blade root section 1 at the connection position.
As a preferred embodiment of the second connecting member 4, the second connecting member 4 is a bolt, the first flange 12 is provided with a plurality of first through holes, the second flange 22 is provided with a plurality of second through holes, and the bolt penetrates through the first through holes and the second through holes, so that the first flange 12 is fixedly connected with the second flange 22.
In order to facilitate the plugging operation, the inner wall of the plugging groove 111 is arranged in clearance fit with the side wall of the plugging block 211.
In order to further improve the bending resistance and the shearing resistance of the blade joint and improve the resistance of the blade joint to relative rotation between the blade root segment 1 and the blade tip segment 2, the top and the bottom of the blade root segment 1 are both provided with first embedded beams 11, and the top and the bottom of the blade tip segment 2 are both provided with second embedded beams 21.
Example 2:
a plug-in type composite material sectional type blade is shown in figures 1-5 and 7, and is different from embodiment 1 in that the blade further comprises a first flange plate 5 and a second flange plate 6, and the cross sections of the first flange plate and the second flange plate are L-shaped; the first flange plate 5 is fixedly arranged on the circumferential direction of the blade root section 1, and a first flange 12 is formed on one side of the first flange plate; the second flange plate 6 is fixedly mounted on the circumferential direction of the blade tip section 2, and a second flange 22 is formed on one side of the second flange plate.
In this embodiment, because the first flange 12 and the second flange 22 are respectively located in the vertical direction of the length direction of the main body portions of the blade root segment 1 and the blade tip segment 2, the composite material is difficult to lay and form, and the first flange 12 and the blade root segment 1, and the second flange 22 and the blade tip segment 2 are arranged in a split manner, so that the main body portions of the blade root segment 1 and the blade tip segment 2 can form a structure extending in the length direction, and the processing is facilitated.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A plug-in composite segmented blade, comprising:
the blade root section (1) and the blade tip section (2) are spliced to form a whole blade;
the blade root section (1) and the blade tip section (2) are internally provided with a first embedded beam (11) and a second embedded beam (21) which are arranged along the length direction of the whole blade respectively; one end of the first embedded beam (11) is provided with an inserting groove (111), one end of the second embedded beam (21) is provided with an inserting block (211), and the inserting block (211) extends into the inserting groove (111); the insertion groove (111) and the insertion block (211) are fixedly connected through a first connecting piece (3);
a first flange (12) is arranged at one end, facing the blade tip section (2), of the blade root section (1) along the circumferential direction, a second flange (22) is arranged at one end, facing the blade tip section (1), of the blade tip section (2) along the circumferential direction, and the first flange (12) is fixedly connected with the second flange (22) through a second connecting piece (4);
a clamping block (13) is further arranged at one end, facing the blade tip section (2), of the blade root section (1) along the circumferential direction, a clamping groove (23) is arranged at one end, facing the blade root section (1), of the blade tip section (2) along the circumferential direction, and the clamping block (13) extends into the clamping groove (23);
the first connecting piece (3) is a fixing screw, the fixing screw sequentially penetrates through the blade root segment (1) and the side face of the insertion groove (111) from the inside of the blade root segment (1), and finally the first connecting piece is fixedly connected with the insertion block (211) through threads.
2. The segmented blade made of plug-in composite materials as claimed in claim 1, characterized in that structural adhesive is arranged between the side faces of the fixture blocks (13) which are attached to the fixture grooves (23).
3. The segmented plug-in composite blade according to claim 1, wherein the length of the plug-in block (211) in the overall length direction of the blade is greater than the length of the fixture block (13) in the overall length direction of the blade.
4. The segmented blade according to claim 1, characterized in that a thickening (14) is provided on the blade root segment (1), the fixing screw being provided at the thickening (14).
5. The segmented blade according to claim 1, wherein the second connecting member (4) is a bolt, a plurality of first through holes are provided on the first flange (12), a plurality of second through holes are provided on the second flange (22), and the bolt penetrates through the first through holes and the second through holes, so that the first flange (12) and the second flange (22) are fixedly connected.
6. The segmented blade according to claim 1, wherein the inner wall of the plug-in groove (111) is arranged in a clearance fit with the side wall of the plug-in block (211).
7. The segmented blade of claim 1, wherein the first pre-embedded beams (11) are arranged at the top and bottom of the blade root segment (1) and the second pre-embedded beams (21) are arranged at the top and bottom of the blade tip segment (2).
8. The segmented plug-in composite blade according to claim 1, further comprising a first flange plate (5) and a second flange plate (6), both "L" shaped in cross-section; the first flange plate (5) is fixedly arranged on the circumferential direction of the blade root section (1), and a first flange (12) is formed on one side of the first flange plate; the second flange plate (6) is fixedly installed on the circumferential direction of the blade tip subsection (2), and one side of the second flange plate forms the second flange (22).
9. The segmented blade of claim 1, wherein the first pre-embedded beam (11) and the blade root segment (1) are formed into an integral structure by a curing process.
10. The segmented plug-in composite blade according to claim 1, wherein the second embedded beam (21) and the tip segment (2) are formed into an integral structure by a curing process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111138458.XA CN113685310B (en) | 2021-09-27 | 2021-09-27 | Plug-in type combined material sectional type blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111138458.XA CN113685310B (en) | 2021-09-27 | 2021-09-27 | Plug-in type combined material sectional type blade |
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| CN113685310A CN113685310A (en) | 2021-11-23 |
| CN113685310B true CN113685310B (en) | 2022-06-21 |
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| CN114851581B (en) * | 2022-05-09 | 2022-11-25 | 新创碳谷集团有限公司 | Modular blade connecting structure, method and tool |
| CN116215592B (en) * | 2023-03-24 | 2023-10-17 | 新创碳谷集团有限公司 | Connection structure, connection method and railway traffic vehicle body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN204729225U (en) * | 2015-05-28 | 2015-10-28 | 大唐山东烟台电力开发有限公司 | A kind of wind power generation unit blade connection set |
| WO2019120417A1 (en) * | 2017-12-21 | 2019-06-27 | Vestas Wind Systems A/S | Modular wind turbine blade and associated method of manufacture |
| PT3804966T (en) * | 2019-10-09 | 2023-08-09 | Siemens Gamesa Renewable Energy As | Method for manufacturing a structural element of a wind turbine blade, method for manufacturing a wind turbine blade, structural element of a wind turbine blade and wind turbine blade |
| 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 |
| CN113137346B (en) * | 2021-05-08 | 2022-09-30 | 上海电气风电集团股份有限公司 | Sectional type fan blade and assembling method thereof |
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