CN110439743B - Sectional blade of wind turbine - Google Patents
Sectional blade of wind turbine Download PDFInfo
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- CN110439743B CN110439743B CN201910852688.9A CN201910852688A CN110439743B CN 110439743 B CN110439743 B CN 110439743B CN 201910852688 A CN201910852688 A CN 201910852688A CN 110439743 B CN110439743 B CN 110439743B
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- 239000000463 material Substances 0.000 claims abstract description 15
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- 239000007787 solid Substances 0.000 claims description 4
- 240000007182 Ochroma pyramidale Species 0.000 claims description 3
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- 238000000465 moulding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 22
- 238000009434 installation Methods 0.000 description 10
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- 230000008569 process Effects 0.000 description 7
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- 230000011218 segmentation Effects 0.000 description 3
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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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- 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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- 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
Abstract
The invention relates to a wind turbine sectional blade, wherein a blade tip section and a blade root section are connected through a local variable pitch device, a flange and a connecting piece which are connected with a transition section, the blade root section is a cylindrical or approximately cylindrical revolving body structure, the outer surface of the blade root section is wrapped with a light rectifying shell, and a light sandwich material is filled between the rectifying shell and the blade root section. The rectifying shell comprises a front edge extending shell structure and a rear edge extending shell structure, and the front edge and the rear edge of the blade root section are respectively enveloped to form an airfoil shape which lengthens the front edge and the rear edge respectively. The invention is convenient for manufacturing, transporting and installing the blade, can effectively improve the production efficiency and reduce the cost.
Description
Technical Field
The invention relates to the technology of a wind turbine, in particular to a sectional blade of the wind turbine.
Background
With the increase of new energy requirements, the installed capacity of a single machine of a wind turbine is gradually increased, the wind turbine blade is used as a core component of the wind turbine, and with the increase of the capacity of the wind turbine, the size of the blade is gradually increased. From the current production process of the blades, the production of the whole large blades has a plurality of technical bottlenecks: on one hand, the large-scale manufacture of the blade brings great difficulty, and the increase of the size of the blade causes the increase of the load and the stress at the blade root, so that the structural reinforcement is needed in the production and layering process of the blade. Therefore, the prior art attempts to further manufacture larger blades have great difficulties in the process.
On the other hand, the installation and transportation of large blades are faced with a plurality of problems, and as the size of the blades increases, the transportation and installation of the blades are faced with a plurality of difficulties, such as the limitation from roads and transportation tools, and generally, the size and the maximum chord length of the blades have a specific upper limit value, and if the size and the maximum chord length of the blades exceed the limit, the transportation is difficult to realize even if the qualified blades can be produced; in addition, the size of the blade is increased, so that great challenges are brought to the installation of the blades of the wind field, the large blade has poor capability of resisting extreme weather in the wind field, the aerodynamic load on the extreme weather is large, and the safety and reliability problems are severe. Therefore, with the development of large-capacity units, large blades matched with the units are required to be produced, and sectional manufacturing, transportation and installation of the blades are a necessary way for the technical development of the blades.
The problems commonly existing in the existing blade segmentation technology are as follows:
1. complex connection schemes, poor reliability, high cost, potential reduction in pneumatic efficiency, etc. These problems are all important reasons limiting the practical use of segmentation techniques;
2. the additional mass introduced by the connecting structure at the segment brings adverse effects on the blade root load and the corresponding variable pitch bearing, and the implementation of the segment scheme is poor;
3. when segmentation connection structure bolt fastening operation, the working space is little, and the installation is difficult, and later maintenance is difficult, the maintenance cost is high.
Disclosure of Invention
The invention provides a sectional blade of a wind turbine, which is convenient for manufacturing, transporting and installing the blade, can effectively improve the production efficiency and reduce the cost.
In order to achieve the aim, the technical scheme of the invention is to provide a wind turbine sectional blade which comprises a blade tip section, a blade root section, a connecting transition section and a rectifying shell;
the blade tip section is connected with one end of the blade root section through a connecting transition section, and the other end of the blade root section is connected with the hub; the blade root section is of a revolving body structure, and the rectifying shell is of a light shell structure wrapping the outer surface of the blade root section.
Optionally, the fairing shell comprises a leading edge extension shell structure and a trailing edge extension shell structure, and the leading edge and the trailing edge of the blade root section are respectively enveloped by the leading edge extension shell structure and the trailing edge extension shell structure, so that an airfoil shape which is respectively lengthened for the leading edge and the trailing edge is formed outside a cylinder of the blade root section.
Optionally, a light sandwich material is arranged between the fairing shell and the blade root section; the lightweight sandwich material is a lightweight foam material, or a balsa material.
Optionally, the root section comprises a cylindrical or approximately cylindrical cylinder; the root section is hollow or solid.
Optionally, the length of the fairing shell is greater than the length of the blade root section, so that the fairing shell extends to the outside of the hub and/or the blade tip section in the length direction, and the fairing shell is directly connected with the hub and/or the blade tip section.
Optionally, the length of the fairing shell is greater than that of the blade root section, so that the fairing shell extends to the outer side of the blade tip section in the length direction, and the connection transition section is contained in a closed space surrounded by the fairing shell.
Optionally, the connecting transition section comprises a local pitch device, a flange and a connecting piece;
the root parts of the blade tip section and the blade root section are provided with matched flanges which are connected through a connecting piece; the interface of the blade tip section and the blade root section is embedded with a matched local variable pitch device.
Optionally, the local pitch device comprises a pitch bearing and a gear; the connector comprises a single or double row of bolts.
Optionally, the interface aperture of the blade tip section is smaller than the interface aperture of the blade root section, so that the interface of the blade tip section is embedded into the interface of the blade root section, and the blade tip section is connected with the blade root section through the connecting transition section;
or the interface caliber of the blade tip section is larger than that of the blade root section, so that the interface of the blade root section is embedded into the interface of the blade tip section, and the blade tip section is connected with the blade root section through the connecting transition section.
Optionally, the blade tip section and the blade root section are produced and transported separately, and are integrally hoisted after being assembled on the ground, or are assembled after being hoisted separately;
the blade tip section is formed by glass fiber cloth layering, pouring forming, mold closing, demolding, surface processing and post-treatment; the leaf root section is formed by glass fiber cloth layering, pouring forming, die assembly, demolding, surface processing and post-treatment.
Optionally, the fairing housing is factory or wind farm mounted to the blade root section; the rectifying shell comprises a plurality of separately produced segments, and the segments are respectively arranged on the leaf root sections; or the rectifying shell comprises a plurality of shell segments produced by local molding segments, and the shell segments sleeved on the blade root segment cylinder are connected with each other;
or, the fairing shell is integrally formed with the blade root section: the rectifying shell is formed by performing surface processing and post-treatment together with the leaf root section after glass fiber cloth layering, pouring forming, die assembly and demolding.
The invention provides a novel sectional blade connecting scheme and an assembling method for a wind turbine sectional blade, and can solve the problem that the existing sectional blade is high in manufacturing cost; the additional mass added to the connecting device at the segment has great negative influence on the structure of the blade and the variable pitch bearing; and the problems of poor implementation performance of the sectional blades, high installation and maintenance cost of joints and the like are solved.
1. The segmented blade breaks through the limitation of production and transportation, can produce the blade with longer length at lower cost, meets the requirements of a larger wind turbine unit on the sea or on the land, can effectively reduce the process links such as structural reinforcement required by large blade transportation or hoisting, reduces the raw materials for blade processing, and saves the production and material cost of the blade.
On the other hand, the ply thickness of the glass fiber cloth is reduced: because the blade root section adopts the shell body to extend, and the mode of filling light sandwich material inside, compare in the current blade of equal specification and size, practiced thrift the laying of glass fiber cloth, also greatly reduced the degree of difficulty of the link of pouring in the blade production process, can realize losing weight and the cost is reduced of blade.
2. The blade root section and the blade tip section are simple in connection structure, the section form of the interface is a mode that the small-caliber interface is embedded into the large-caliber interface, so that the connection part is in non-uniform transition connection (namely, the structural appearance of the segmented connection part can be inconsistent), the operation space is sufficient, the embedded connection mode enables the operability space of the connection part to be large, the installation and the operation are easy, the practicability is strong, the flange connection is more reliable, the production efficiency is high, and the cost is low.
3. The invention adopts the local pitch control technology, can reduce the extreme load in extreme weather, and can reduce the size of the pitch control bearing and reduce the manufacturing cost of the pitch control bearing in an embedded connection mode.
4. The blade root section adopts wing section casing rectification appearance design, and the rectification casing appearance integration (reshape) blade root section and apex section appearance, with the leading edge and the trailing edge of blade root section cylinder extension respectively, increased the chord length of blade root section cylinder, improved the aerodynamic performance of cylinder, promote whole blade's aerodynamic efficiency.
Drawings
FIG. 1 is a global schematic of a segmented blade of the present invention;
FIG. 2 is a schematic view of a fairing housing on a segmented blade;
FIG. 3 is a schematic view of a root section;
FIG. 4 is a schematic illustration of a root segment joined to a tip segment;
FIG. 5 is a cross-sectional view of a root section and fairing housing.
Detailed Description
As shown in FIG. 1 and FIG. 2, the present invention provides a wind turbine sectional blade, which comprises a blade tip section 5, a blade root section 1, a connecting transition section 4 and a rectifying casing. The blade tip section 5 is connected with one end of the blade root section 1 through the connecting transition section 4, and the other end of the blade root section 1 is connected with the hub; the rectifying shell is wrapped on the outer side of the blade root section 1, so that the outer surface of the blade root section 1 can keep a better pneumatic appearance.
As shown in fig. 3, the root section 1 is a solid of revolution structure, such as a cylinder or a cylinder of approximately cylinder, which may be hollow or solid. The caliber D2 of one end of the blade root section 1 can be different from the caliber D1 of the other end, in the embodiment, D1 is larger than D2, as shown in figures 1 and 2, the end with the larger caliber is connected with the hub, and the end with the smaller caliber is connected with the blade root section 1 through the connecting transition section 4; or, in other examples, the end with the smaller caliber is connected with the hub, and the end with the larger caliber is connected with the blade root section 1 through the connecting transition section 4; depending on the actual diameters at the respective interfaces of the tip section 5, the root section 1 and the hub.
As shown in fig. 1, 2 and 5, the fairing is a lightweight shell structure and is formed on the outer surface of the blade root section 1 by any suitable means such as gluing, mounting, adhering, fixing, etc. The rectifying shell comprises a front edge extending shell structure 2 and a rear edge extending shell structure 3, the front edge 12 and the rear edge 13 of the blade root section 1 are respectively enveloped, and a large-thickness airfoil shape with the front edge 12 and the rear edge 13 both lengthened is formed outside a cylinder 11 of the blade root section 1, so that the pneumatic performance of the blade root section 1 is greatly improved, and the generated energy of blades is effectively improved.
Cavities (such as the left cavity 21 and the right cavity 22 in fig. 5) may be formed inside the airfoil shape of the fairing housing, which may be filled with a light sandwich material, such as a light foam material like PVC, or a balsa material. The column 11 of the leaf root section 1 is not filled with a light sandwich material.
The connection form between the extension shell structure of the rectifying shell and the column 11 of the blade root section 1 is not limited, for example, a framework can be arranged between the extension shell structure and the column, for example, an I-shaped or T-shaped main beam structure is built in the inner cavity of the rectifying shell to support the modeling and fixing structure; or in an extreme case, the skeleton can be omitted, and the overall weight can be reduced.
The length of the rectifying shell can exceed the blade root section 1, so that the rectifying shell correspondingly extends to the outer side of the hub and/or the blade tip section 5 in the front and back directions, the rectifying shell is directly connected with the hub and/or the blade tip section 5, the connection is firmer, pneumatic continuity is achieved, and erosion of sand blown by wind, rain and the like to the connecting part of the blade root section 1 and the blade tip section 5 and/or the hub is prevented.
As shown in fig. 4, the connecting transition section 4 includes a local pitch control device 42, a flange 41 and a connecting piece, the flange 41 is disposed at the root of the blade tip section 5 and the root of the blade root section 1, and is connected through the connecting piece; the local pitch control device 42 is embedded in the interface between the tip section 5 and the root section 1, and preferably includes a pitch bearing and a gear, but is not limited thereto.
The interface of the blade tip section 5 and the blade root section 1 is connected in a way of embedding a small-caliber interface into a large-caliber interface. The blade tip section 5 can be provided with a small-caliber interface and embedded into a large-caliber interface of the blade root section 1, and the blade tip section 5 is connected with the blade root section 1 through the connecting transition section 4; or, the blade root section 1 may have a small-caliber interface, and be embedded in the large-caliber interface of the blade tip section 5, and then the blade tip section 5 is connected with the blade root section 1 through the connection transition section.
The length of the fairing body is not always consistent with the length of the column body 11 of the blade root section 1, so that the proportion design of the blade tip section 5 and the blade root section 1 can be more free and wider in range, and the fairing body is suitable for more different types of blades.
Preferably, the connection transition section 4 between the root section 1 and the tip section 5 may be completely contained in the enclosed space enclosed by the fairing: for example, the rectifying casing extends to the outside of the blade tip section 5 in the length direction, and then the connecting transition section 4 is correspondingly located at a certain distance inside the rectifying casing, so that rainwater cannot infiltrate into the connecting transition section 4 and the inside of the blade along the gap of the connecting part of the blade root section 1 and the blade tip section 5 in the rainy period, and a better protection effect can be achieved on precise parts in the connecting transition section 4 in the transportation process, so that the rectifying casing has longer service life and reliability. The invention can further design a rain cover or a wind-proof sand cover and other devices at the connecting transition section 4.
The production, transport and installation of the segmented blade according to the invention are explained below:
the tip section 5 and the root section 1 are produced separately. The blade tip section 5 can be made of a mold by using a traditional blade production process, and comprises the processes of glass fiber cloth laying, pouring forming, mold closing, demolding, surface treatment and the like.
Mounting a flange, a variable pitch bearing and other structures for connection at the root of the blade tip section 5, wherein the variable pitch bearing can be embedded into the interface; the segmented blades can be connected and fixed in a single-row or double-row bolt mode.
The structure of the blade root section 1 is simple, the blade root section is a cylindrical or approximately cylindrical revolving body structure, and the traditional production process can be adopted for the blade root section, and comprises the processes of laying, pouring, die assembly, demoulding post-treatment and the like.
And a flange, a variable pitch bearing and other structures which can be matched with the blade tip section 5 are arranged at the interface of the blade root section 1.
In the blade transportation process, the blade tip section 5 and the blade root section 1 are transported in a segmented mode, the blade tip section 5 is transported in a concentrated mode by a transport vehicle with corresponding length, and the blade root section 1 can be transported horizontally or in a three-dimensional mode.
The airfoil-shaped rectifying shell at the blade root section 1 is installed on the surface of the blade root section 1 in a local section pasting mode, namely, the shell is produced in a slicing mode, the slices are pasted on the surface of the blade, and the middle interlayer is filled with a light sandwich material. Or, the production is locally molded and segmented, the shell is sleeved on the column body of the blade root segment 1 in a segmented mode, then the shell is fixed by adopting an adhesive and fastening bolts, and the middle interlayer is filled with a light sandwich material and can be suitable for being installed in a blade factory or in a wind field on site. Preferably, the fairing shell and the blade root section 1 are pre-assembled in a connected manner at the time of factory shipment.
Alternatively, the airfoil fairing body may be produced integrally with the blade body, such as: in the blade production link, the external shell plays a role in rectification, so that the local load intensity is low, and the structural strength requirement is not high; therefore, in the production process of the blade root section 1, the outer rectifying shell is subjected to 5-15 layers of glass fiber cloth laying and pouring molding, then surface coating processing and post-treatment are carried out together with the blade root section 1, and the shell and the blade root section 1 are filled with a light sandwich material.
The installation process comprises the following steps:
preparing an installation environment:
wind conditions: the wind speed is less than 5-grade wind speed;
environment temperature: not lower than-10 deg.C and not higher than 40 deg.C;
preparing equipment: the safety helmet comprises a safety helmet, a safety belt, an anti-falling device, gloves, a plurality of cleaning cloths, a crane, a hoisting tool, a hoisting belt, an interphone, a positioning instrument, a wrench, a torque wrench and the like.
In the installation process, the two sections can be integrally hoisted after being connected on the ground, or the two sections can be respectively hoisted:
1) the orientations of the blade tip section 5 and the blade root section 1 are adjusted to be opposite. The root of the blade tip section 5 is connected with the blade root section 1 through the connecting transition section 4 on the ground, so that the two sections are combined into a whole and then the assembled integral blade is hoisted. And (5) repeatedly installing the second blade and the third blade according to the flow.
2) The blade and the blade root section 1 are adjusted to be opposite. Firstly, the blade root section 1 is hoisted, after the blade root section 1 is hoisted, the blade tip section 5 is hoisted, and then the two sections are connected into a whole. And (5) repeatedly installing the second blade and the third blade according to the flow.
In conclusion, the sectional blade of the wind turbine provides a new sectional blade solution, and facilitates the manufacturing, transportation and installation of the blade.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (9)
1. A wind turbine sectional blade is characterized in that,
comprises a blade tip section (5), a blade root section (1), a connecting transition section (4) and a rectifying shell;
the blade tip section (5) is connected with one end of the blade root section (1) through the connecting transition section (4), and the other end of the blade root section (1) is connected with the hub; the interface of the blade tip section (5) is embedded into the interface of the blade root section (1) or the interface of the blade root section (1) is embedded into the interface of the blade tip section (5), and the blade tip section (5) is connected with the blade root section (1) through the connecting transition section (4);
the blade root section (1) is of a revolving body structure, and the rectifying shell is of a light shell structure wrapping the outer surface of the blade root section (1); the length of the rectifying shell is greater than that of the blade root section (1), so that the rectifying shell extends to the outer side of the hub and/or the blade tip section (5) in the length direction; the connecting transition section (4) is contained in a closed space enclosed by the rectifying shell.
2. The wind turbine segmented blade as claimed in claim 1,
the rectifying shell comprises a front edge extending shell structure (2) and a rear edge extending shell structure (3), and the front edge (12) and the rear edge (13) of the blade root section (1) are respectively enveloped, so that an airfoil shape which respectively lengthens the front edge (12) and the rear edge (13) is formed on the outer side of a cylinder (11) of the blade root section (1).
3. The wind turbine segmented blade as claimed in claim 2,
a light sandwich material is arranged between the rectifying shell and the leaf root section (1); the light sandwich material is a light foam material or a balsa wood material;
the root section (1) is hollow or solid.
4. The wind turbine sectional blade as claimed in claim 2 or 3,
the fairing body is directly connected to the hub and/or blade tip section (5).
5. The wind turbine segmented blade as claimed in claim 1,
the connecting transition section (4) comprises a local variable-pitch device (42), a flange (41) and a connecting piece;
the root parts of the blade tip section (5) and the blade root section (1) are provided with matched flanges (41) which are connected through a connecting piece; the interface of the blade tip section (5) and the blade root section (1) is embedded with a matched local variable pitch device (42).
6. The wind turbine segmented blade as claimed in claim 5,
the local variable-pitch device comprises a variable-pitch bearing and a gear;
the connector comprises a single or double row of bolts.
7. The wind turbine sectional blade as claimed in claim 1, 5 or 6,
the interface caliber of the blade tip section (5) is smaller than that of the blade root section (1), so that the interface of the blade tip section (5) is embedded into the interface of the blade root section (1), and the blade tip section (5) is connected with the blade root section (1) through the connecting transition section (4);
or the interface caliber of the blade tip section (5) is larger than that of the blade root section (1), so that the interface of the blade root section (1) is embedded into the interface of the blade tip section (5), and the blade tip section (5) is connected with the blade root section (1) through the connecting transition section (4).
8. The wind turbine segmented blade as claimed in claim 1,
the leaf tip section (5) and the leaf root section (1) are produced and transported respectively, and are integrally hoisted after being assembled on the ground or are assembled after being hoisted respectively;
the blade tip section (5) is formed by glass fiber cloth layering, pouring forming, mold closing, demolding, surface processing and post-treatment; the leaf root section (1) is formed by glass fiber cloth layering, pouring forming, die assembly, demolding, surface processing and post-treatment.
9. The wind turbine sectional blade as claimed in claim 1 or 8,
the rectifying shell is mounted on the blade root section (1) in a factory or on a wind field site; the rectifying shell comprises a plurality of separately produced segments, and the segments are respectively mounted on the leaf root sections (1); or the rectifying shell comprises a plurality of shell segments produced by local molding segments, and the shell segments sleeved on the cylinder of the blade root segment (1) are connected with each other;
or, the rectification shell is integrally formed with the blade root section (1): the rectifying shell is formed by performing surface processing and post-treatment together with the leaf root section (1) after glass fiber cloth laying, pouring forming, die assembly and demolding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852688.9A CN110439743B (en) | 2019-09-10 | 2019-09-10 | Sectional blade of wind turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852688.9A CN110439743B (en) | 2019-09-10 | 2019-09-10 | Sectional blade of wind turbine |
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| Publication Number | Publication Date |
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| CN110439743A CN110439743A (en) | 2019-11-12 |
| CN110439743B true CN110439743B (en) | 2021-01-19 |
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| CN201910852688.9A Active CN110439743B (en) | 2019-09-10 | 2019-09-10 | Sectional blade of wind turbine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111188727B (en) * | 2020-01-13 | 2021-09-24 | 上海电气风电集团股份有限公司 | Wind turbine blade root structure and production method thereof |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9944356B1 (en) * | 2009-03-25 | 2018-04-17 | Alexander T. Wigley | Shape shifting foils |
| EP2603694B1 (en) * | 2010-08-11 | 2015-12-16 | Vestas Wind Systems A/S | Rotor blade for a wind turbine and method of making same |
| CN102011710B (en) * | 2010-11-23 | 2012-07-18 | 南京航空航天大学 | Wind machine blade |
| CN102606420B (en) * | 2012-04-16 | 2014-12-10 | 国电联合动力技术有限公司 | Large wind driven power generator and sectional type blade thereof |
| CN105508131B (en) * | 2016-01-18 | 2018-01-16 | 明阳智慧能源集团股份公司 | A kind of sectionally assembled blade of wind-driven generator and its manufacture method |
| CN107676232B (en) * | 2017-10-13 | 2024-03-26 | 中国科学院工程热物理研究所 | Modularized wind turbine blade structure and assembly method thereof |
| CN108087191B (en) * | 2017-12-25 | 2020-01-31 | 江苏金风科技有限公司 | Sectional blade, method for connecting sectional blades and wind generating set |
| CN108223304B (en) * | 2018-02-28 | 2023-09-12 | 中国科学院工程热物理研究所 | Blade tip extension connection structure and assembly method thereof |
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Address after: 200241 Dongchuan Road, Shanghai, No. 555, building No. 8, floor, floor, No. Applicant after: Shanghai Electric Wind Power Group Co., Ltd Address before: 200241, 4 floor, building 555, 4 Dongchuan Road, Shanghai, Minhang District Applicant before: SHANGHAI ELECTRIC WIND POWER GROUP Co.,Ltd. |
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