CN113882999B - Connection structure of sectional type wind-powered electricity generation blade - Google Patents
Connection structure of sectional type wind-powered electricity generation blade Download PDFInfo
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- CN113882999B CN113882999B CN202111137828.8A CN202111137828A CN113882999B CN 113882999 B CN113882999 B CN 113882999B CN 202111137828 A CN202111137828 A CN 202111137828A CN 113882999 B CN113882999 B CN 113882999B
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- 230000005611 electricity Effects 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 238000010862 gear shaping Methods 0.000 claims description 15
- 239000003292 glue Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Classifications
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- 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)
Abstract
The invention relates to the technical field of wind power generation equipment, in particular to a connecting structure and a connecting method of a sectional type wind power blade, wherein the wind power blade at least comprises two blade sections, a first connecting piece and a second connecting piece which are mutually inserted and matched are pre-embedded in the connecting part of the two adjacent blade sections during manufacturing, and a windward shroud plate and a leeward shroud plate are fixedly connected to the outer circumferential surface formed by inserting the first connecting piece and the second connecting piece through a set fixed limiting rib; the wind power blade is characterized in that the whole curved surface profile formed by the windward shroud plate positioned on the windward side of the wind power blade and the leeward shroud plate positioned on the leeward side of the wind power blade is the same as the whole section profile of the wind power blade. Through the mutual grafting cooperation of pre-buried first connecting piece in the blade section and second connecting piece, utilize the deformation of fixed spacing rib restriction outside periphery, guaranteed wind-powered electricity generation blade overall stability, reduced the load of shimmy direction and the fatigue load of blade, improved the reliability of connecting.
Description
Technical Field
The invention relates to the technical field of wind power generation equipment, in particular to a connecting structure and a connecting method of sectional type wind power blades.
Background
The wind generating set converts the kinetic energy of wind into mechanical energy through the blades, and then converts the mechanical energy into electric energy through the generator. The blades account for 20-25% of the total equipment cost of the wind generating set, and the cost (including manufacturing cost, transportation cost, installation cost and maintenance cost) of the blades is greatly increased along with the continuous increase of the power of the wind generating set in recent years, so that the development prospect of a large wind generating set is restricted.
To solve the above problems, the fan blades may be manufactured in segments, and the segmented blades are assembled into a complete blade at the time of installation. At present, a bolt connection mode or a structural adhesive connection mode is usually adopted, the bolt connection mode needs to increase the material thickness at a joint and then is connected so as to ensure the connection strength, so that the weight of the joint is increased, the locking effect of a bolt has loosening hidden danger, the structural adhesive connection mode has relatively low performance, can only bear shearing stress, cannot bear overlarge load, and has relatively low reliability.
In view of the above problems, the present inventors have made active research and innovation based on practical experience and professional knowledge that is abundant for many years in engineering applications of such products, in order to create a connection structure and a connection method for sectional type wind turbine blades, so that the connection structure and the connection method are more practical.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the connection structure and the connection method of the sectional type wind power blade are provided, and the connection reliability is improved.
In order to achieve the purpose, the invention adopts the technical scheme that: a connection structure and a connection method of a sectional type wind power blade are disclosed, the wind power blade at least comprises two blade sections, a first connecting piece and a second connecting piece which are mutually inserted and matched are pre-embedded in the connection part of the two adjacent blade sections during manufacturing, and a windward shroud plate and a leeward shroud plate are fixedly connected to the outer circumferential surface formed by inserting the first connecting piece and the second connecting piece through a set fixed limiting rib;
the wind power blade is characterized in that the whole curved surface profile formed by the windward shroud plate positioned on the windward side of the wind power blade and the leeward shroud plate positioned on the leeward side of the wind power blade is the same as the whole section profile of the wind power blade.
Furthermore, a plurality of embedded nuts used for connecting the windward shroud plate and the leeward shroud plate are embedded in the fixed limiting ribs.
Furthermore, a plurality of outer gear shaping teeth and a plurality of inner gear shaping teeth are distributed on the first connecting piece and the second connecting piece in a staggered mode, the outer gear shaping teeth and the inner gear shaping teeth are both of a trapezoidal structure, the cross sections of the outer gear shaping teeth are outer wide and inner narrow, and the cross sections of the inner gear shaping teeth are outer narrow and inner wide.
Furthermore, outer gear shaping with all be equipped with the slot on the interior gear shaping, after pegging graft outer gear shaping with a plurality of on the outside periphery of interior gear shaping the slot concatenation forms the mounting groove, fixed spacing rib sets up in the mounting groove.
Furthermore, the cross section of the slot is of a dovetail groove structure, the fixed limiting rib is matched with the dovetail groove, and a gap exists between the fixed limiting rib and the bottom of the slot.
Further, fixed limit rib is including the limit rib one that is located wind-powered electricity generation blade windward side and the limit rib two that is located wind-powered electricity generation blade leeward side, the curved surface radian of first laminating windward side of limit rib, the curved surface radian of second laminating leeward side of limit rib.
Furthermore, glue injection holes are formed in the junction of the windward shroud plate and the leeward shroud plate and communicated with the gap.
Furthermore, oval gear shaping matched with each other is arranged at the connecting position of the web plates of two adjacent blade sections.
The invention also provides a connection method of the sectional type wind power blade, which applies the connection structure of the sectional type wind power blade and comprises the following steps:
the method comprises the following steps: respectively embedding a first connecting piece and a second connecting piece in two adjacent blade sections of the wind power blade, and transporting the two adjacent blade sections to an assembly station;
step two: the first connecting piece and the second connecting piece on the two adjacent blade sections are mutually inserted;
step three: the fixed limit rib is fixed on the outer circumferential surface formed by the splicing of the first connecting piece and the second connecting piece;
step four: the windward shroud plate and the leeward shroud plate are fixed on the windward side and the leeward side of the wind power blade through the embedded nuts on the fixed limiting ribs;
step five: injecting structural adhesive to the bottom of the fixed limiting rib through the adhesive injection hole;
step six: filling structural adhesive into threaded holes of the windward shroud plate and the leeward shroud plate;
step seven: and after the structural adhesive is cured, completing the connection of the two adjacent blade segments.
The invention has the beneficial effects that: compared with the traditional bolt connection, the blade section has the advantages that the first connecting piece and the second connecting piece which are pre-embedded in the blade section are mutually inserted and matched, the deformation of the outer side circumferential surface is limited by the fixed limiting rib, the cross section outline of the connecting part is the same as that of the wind power blade through the arrangement of the windward shroud plate and the leeward shroud plate, the force of each direction borne by the segmented blade can be effectively and completely transmitted, the integral stability of the wind power blade is ensured, the use of a large number of bolts is greatly reduced, the weight increment of the blade connecting part is reduced, the load in the shimmy direction and the fatigue load of the blade are reduced, and the reliability of connection is improved.
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 schematic structural diagram of blade segment pre-embedding of a sectional type wind power blade in the embodiment of the invention;
FIG. 2 is a schematic diagram of a first connecting piece and a second connecting piece after a blade segment is embedded in the embodiment of the invention;
FIG. 3 is a schematic diagram of the pre-mating of the first connector and the second connector according to the embodiment of the present invention;
FIG. 4 is a schematic view illustrating the butt joint of the first connecting member and the second connecting member according to the embodiment of the present invention;
FIG. 5 is a schematic illustration of the preassembly of various fittings in an embodiment of the present invention;
FIG. 6 is a schematic view of the installation of the fixing and position-limiting ribs and the slots in the embodiment of the present invention;
FIG. 7 is a schematic diagram of a location of a via hole according to an embodiment of the present invention;
fig. 8 is a schematic diagram illustrating glue injection in the slot in the embodiment of the invention.
Reference numerals: 1. a blade segment; 2. a first connecting member; 21. external gear shaping; 211. a slot; 3. a second connecting member; 31. internally slotting gears; 4. fixing the limit ribs; 5. a windward shroud plate; 6. a leeward sheathing panel; 7. pre-burying a nut; 8. injecting glue holes; 9. elliptic gear shaping; 10. and (4) structural adhesive.
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.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example one
As shown in fig. 1 to 8, the connection structure of a sectional wind power blade at least comprises two blade sections 1, a first connecting piece 2 and a second connecting piece 3 which are mutually inserted and matched are pre-embedded in the connection part of the two adjacent blade sections 1 during manufacturing, and a windward shroud plate 5 and a leeward shroud plate 6 are fixedly connected to the outer circumferential surface formed by inserting the first connecting piece 2 and the second connecting piece 3 through a fixed limit rib 4; the overall curved surface profile formed by the windward shroud plate 5 positioned on the windward side of the wind power blade and the leeward shroud plate 6 positioned on the leeward side of the wind power blade is the same as the overall section profile of the wind power blade.
In the preferred embodiment of the invention, the first connecting piece 2 and the second connecting piece 3 which are pre-embedded in the blade section 1 are mutually inserted and matched, the deformation of the outer circumferential surface is limited by the fixed limiting rib 4, and the cross section profile of the joint is the same as that of the wind power blade through the arrangement of the windward shroud plate 5 and the leeward shroud plate 6, so that the forces in all directions borne by the segmented blade can be effectively and completely transmitted, the integral stability of the wind power blade is ensured, the use of a large number of bolts is greatly reduced, the weight increment of the blade joint is reduced, the load in the shimmy direction and the fatigue load of the blade are reduced, and the reliability of connection is improved.
In order to increase the connection strength of the connection part, a plurality of embedded nuts 7 for connecting the windward shroud plate 5 and the leeward shroud plate 6 are embedded in the fixed limiting ribs 4.
Specifically, through the embedded nuts 7 in the fixed limiting ribs 4, the connection stability of the windward shroud plate 5 and the leeward shroud plate 6 is improved, the pneumatic appearance of the surface of the blade is optimized while the surface of the blade is smooth, and the overall performance of bearing loads of the windward side and the leeward side of the wind power blade is improved.
In the preferred embodiment of the present invention, the plurality of outer gear teeth 21 on the first connecting member 2 and the plurality of inner gear teeth 31 on the second connecting member 3 are distributed in a staggered manner, the outer gear teeth 21 and the inner gear teeth 31 are both in a trapezoidal structure, the cross section of the outer gear teeth 21 is wide at the outside and narrow at the inside, and the cross section of the inner gear teeth 31 is narrow at the outside and wide at the inside.
Specifically, the outer gear 21 and the inner gear 31 are inserted in a staggered manner, so that the binding force of the joint is improved, and the outer gear 21 and the inner gear 31 are in wedge fit, so that the overall performance of the wind power blade connection structure is improved.
On the basis of the above embodiment, in order to ensure the accuracy of the position of the fixed limit rib 4 on the outer circumferential surface, the outer gear teeth 21 and the inner gear teeth 31 are both provided with slots 211, a plurality of slots 211 on the outer circumferential surface of the inserted outer gear teeth 21 and the inserted inner gear teeth 31 are spliced to form a mounting groove, and the fixed limit rib 4 is arranged in the mounting groove.
Specifically, the mounting groove is formed by the concatenation of a plurality of slots 211, and fixed spacing rib 4 has restricted along wind-powered electricity generation blade circumferencial direction and along the ascending displacement of wind-powered electricity generation blade length direction in the embedding mounting groove, has guaranteed first connecting piece 2 and 3 plug-in connection's of second connecting piece reliability.
Preferably, the cross section of the slot 211 is a dovetail groove structure, the fixing and limiting rib 4 is matched with the dovetail groove, and a gap exists between the fixing and limiting rib 4 and the bottom of the slot 211.
Specifically, the slot 211 adopts a dovetail groove structure, so that the risk that the fixed limiting rib 4 loosens or falls off in the slot 211 is reduced, the smoothness of the connection between the windward shroud plate 5 and the leeward shroud plate 6 and the curved surface of the wind power blade is ensured, and the load in the shimmy direction and the fatigue load of the blade are reduced.
For the convenience of fixing the limiting rib 4 in the installation of the slot 211, the fixing limiting rib 4 comprises a first limiting rib located on the windward side of the wind power blade and a second limiting rib located on the leeward side of the wind power blade, the first limiting rib is attached to the curved surface radian of the windward side, and the second limiting rib is attached to the curved surface radian of the leeward side. The fixed limiting ribs 4 adopt a split structure, the assembly difficulty is reduced, and the capability of bearing load on the windward side and the leeward side of the wind power blade is ensured to a certain extent.
In the preferred embodiment of the invention, the glue injection hole 8 is arranged at the junction of the windward shroud plate 5 and the leeward shroud plate 6, and the structural glue 10 is injected into the bottom of the fastened fixed limit rib 4 through the glue injection hole 8, so that the structural glue 10 completely fills the gap between the fixed limit rib 4 and the bottom of the slot 211, the stress effect of the fixed limit rib 4 is increased, the using number of bolts is greatly reduced, the weight of the blade joint is reduced, and the connection reliability is improved.
In the preferred embodiment of the invention, the connecting position of the webs of two adjacent blade sections 1 is provided with oval gear shaping teeth 9 which are matched with each other.
Example two
The invention also provides a connection method of the sectional type wind power blade, which applies the connection structure of the sectional type wind power blade and comprises the following steps:
the method comprises the following steps: respectively embedding a first connecting piece 2 and a second connecting piece 3 in two adjacent blade sections 1 of the segmented wind power blade, and transporting the two adjacent blade sections to an assembly station;
step two: the first connecting piece 2 and the second connecting piece 3 on the two adjacent blade sections 1 are mutually inserted;
step three: the fixed limit rib 4 is fixed on the outer circumferential surface formed by splicing the first connecting piece 2 and the second connecting piece 3;
step four: the windward shroud plate 5 and the leeward shroud plate 6 are fixed on the windward side and the leeward side of the wind power blade through the embedded nuts 7 on the fixed limiting ribs 4;
step five: injecting structural adhesive 10 to the bottom of the fixed limiting rib 4 through the adhesive injection hole 8;
step six: filling structural adhesive 10 into threaded holes of the windward shroud plate 5 and the leeward shroud plate 6;
step seven: and after the structural adhesive 10 is cured, completing the connection of the two adjacent blade segments 1.
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 (8)
1. A connection structure of a sectional type wind power blade, the wind power blade at least comprises two blade sections (1), and is characterized in that;
a first connecting piece (2) and a second connecting piece (3) which are mutually inserted and matched are pre-embedded in the connecting part of two adjacent blade sections (1) during manufacturing, and a windward shroud plate (5) and a leeward shroud plate (6) are fixedly connected to the outer circumferential surface formed by inserting the first connecting piece (2) and the second connecting piece (3) through a fixed limiting rib (4);
the wind power blade is characterized in that the whole curved surface profile formed by the windward shroud plate (5) positioned on the windward side of the wind power blade and the leeward shroud plate (6) positioned on the leeward side of the wind power blade is the same as the whole section profile of the wind power blade;
the connecting method applying the sectional type wind power blade connecting structure comprises the following steps:
the method comprises the following steps: respectively embedding a first connecting piece (2) and a second connecting piece (3) in two adjacent blade sections (1) of the wind power blade, and transporting the two adjacent blade sections to an assembly station;
step two: the first connecting piece (2) and the second connecting piece (3) on the two adjacent blade sections (1) are mutually inserted;
step three: the fixed limit rib (4) is fixed on the outer circumferential surface formed by splicing the first connecting piece (2) and the second connecting piece (3);
step four: the windward shroud plate (5) and the leeward shroud plate (6) are fixed on the windward side and the leeward side of the wind power blade through the embedded nuts (7) on the fixed limiting ribs (4);
step five: injecting structural adhesive (10) to the bottom of the fixed limit rib (4) through the adhesive injection hole (8);
step six: filling structural adhesive (10) into threaded holes of the windward shroud plate (5) and the leeward shroud plate (6);
step seven: and after the structural adhesive (10) is cured, completing the connection of the two adjacent blade sections (1).
2. The connecting structure of the segmented wind power blade is characterized in that a plurality of embedded nuts (7) used for connecting the windward shroud plate (5) and the leeward shroud plate (6) are embedded in the fixed limiting ribs (4).
3. The connecting structure of the sectional type wind power blade is characterized in that a plurality of outer gear teeth (21) on the first connecting piece (2) and a plurality of inner gear teeth (31) on the second connecting piece (3) are distributed in a staggered mode, the outer gear teeth (21) and the inner gear teeth (31) are both in a trapezoidal structure, the cross section of each outer gear tooth (21) is wide at the outside and narrow at the inside, and the cross section of each inner gear tooth (31) is narrow at the outside and wide at the inside.
4. The connecting structure of the sectional type wind power blade is characterized in that the outer gear (21) and the inner gear (31) are respectively provided with a slot (211), a plurality of slots (211) are spliced on the outer circumferential surface of the outer gear (21) and the inner gear (31) after being spliced to form a mounting groove, and the fixed limiting rib (4) is arranged in the mounting groove.
5. The connecting structure of the sectional type wind power blade is characterized in that the cross section of the slot (211) is in a dovetail groove structure, the fixed limit rib (4) is matched with the dovetail groove, and a gap exists between the fixed limit rib (4) and the bottom of the slot (211).
6. The connecting structure of the sectional type wind power blade according to claim 5, wherein the fixed limit rib (4) comprises a first limit rib positioned on the windward side of the wind power blade and a second limit rib positioned on the leeward side of the wind power blade, the first limit rib fits the curvature of the windward side, and the second limit rib fits the curvature of the leeward side.
7. The connecting structure of the segmented wind power blade is characterized in that a glue injection hole (8) is formed at the junction of the windward shroud plate (5) and the leeward shroud plate (6), and the glue injection hole (8) is communicated with the gap.
8. The connecting structure of the sectional type wind power blade is characterized in that the web connecting position of two adjacent blade sections (1) is provided with mutually matched oval gear shaping teeth (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111137828.8A CN113882999B (en) | 2021-09-27 | 2021-09-27 | Connection structure of sectional type wind-powered electricity generation blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111137828.8A CN113882999B (en) | 2021-09-27 | 2021-09-27 | Connection structure of sectional type wind-powered electricity generation blade |
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| Publication Number | Publication Date |
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| CN113882999A CN113882999A (en) | 2022-01-04 |
| CN113882999B true CN113882999B (en) | 2022-06-21 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737250A (en) * | 2008-11-14 | 2010-06-16 | 通用电气公司 | Turbine blade fabrication |
| CN102141001A (en) * | 2011-03-25 | 2011-08-03 | 中国科学院工程热物理研究所 | Wind machine blade and method for designing same |
| CN102308083A (en) * | 2008-12-05 | 2012-01-04 | 模组风能公司 | Efficient wind turbine blades, wind turbine blade structures, and associated systems and methods of manufacture, assembly and use |
| WO2015051803A1 (en) * | 2013-10-10 | 2015-04-16 | Vestas Wind Systems A/S | Wind turbine blade |
| CN110552852A (en) * | 2019-10-17 | 2019-12-10 | 湖南中科宇能科技有限公司 | Built-in manhole plate of wind power blade |
| CN113339190A (en) * | 2021-08-04 | 2021-09-03 | 常州市宏发纵横新材料科技股份有限公司 | High-strength connecting structure and sectional type wind power blade |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120321454A1 (en) * | 2011-06-14 | 2012-12-20 | Yu Zhi-Xuan | Wind power generation apparatus |
-
2021
- 2021-09-27 CN CN202111137828.8A patent/CN113882999B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737250A (en) * | 2008-11-14 | 2010-06-16 | 通用电气公司 | Turbine blade fabrication |
| CN102308083A (en) * | 2008-12-05 | 2012-01-04 | 模组风能公司 | Efficient wind turbine blades, wind turbine blade structures, and associated systems and methods of manufacture, assembly and use |
| CN102141001A (en) * | 2011-03-25 | 2011-08-03 | 中国科学院工程热物理研究所 | Wind machine blade and method for designing same |
| WO2015051803A1 (en) * | 2013-10-10 | 2015-04-16 | Vestas Wind Systems A/S | Wind turbine blade |
| CN110552852A (en) * | 2019-10-17 | 2019-12-10 | 湖南中科宇能科技有限公司 | Built-in manhole plate of wind power blade |
| CN113339190A (en) * | 2021-08-04 | 2021-09-03 | 常州市宏发纵横新材料科技股份有限公司 | High-strength connecting structure and sectional type wind power blade |
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| CN113882999A (en) | 2022-01-04 |
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Effective date of registration: 20221108 Address after: 213127 No. 329, Huanghai Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Xinchuang Carbon Valley Group Co.,Ltd. Address before: 213135, No. 28, Lijiang Road, textile industry garden, Xixia Town villa, Xinbei District, Jiangsu, Changzhou Patentee before: CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECHNOLOGY Co.,Ltd. |