CN114412731A - Wind-powered electricity generation blade root baffle - Google Patents
Wind-powered electricity generation blade root baffle Download PDFInfo
- Publication number
- CN114412731A CN114412731A CN202210122917.3A CN202210122917A CN114412731A CN 114412731 A CN114412731 A CN 114412731A CN 202210122917 A CN202210122917 A CN 202210122917A CN 114412731 A CN114412731 A CN 114412731A
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- CN
- China
- Prior art keywords
- blade root
- glass fiber
- fiber reinforced
- reinforced plastic
- plastic layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005611 electricity Effects 0.000 title description 2
- 239000011152 fibreglass Substances 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000003292 glue Substances 0.000 claims abstract description 5
- 239000006260 foam Substances 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 4
- 238000004132 cross linking Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000002131 composite material Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000428 dust Substances 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
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009755 vacuum infusion Methods 0.000 description 1
Images
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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/305—Flaps, slats or spoilers
-
- 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
-
- 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
Landscapes
- 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
A wind power blade root baffle comprises a structure main body, an artificial channel and an adhesion area; the artificial channel is arranged on the structure body, the circumferential direction of the structure body is a bonding area, and the bonding area is connected with the blade root glass fiber reinforced plastic layer through bonding glue. The invention solves the problems of the whole shrinkage generated by the environmental temperature change and the ultra-poor elliptical deformation generated by the gravity of the wind power blade in the manufacturing, storing, transporting, hoisting and operating stages.
Description
Technical Field
The invention belongs to the technical field of wind power, and particularly relates to a wind power blade root baffle.
Background
The technical development of the wind power industry is very rapid, fans with single machine capacity of more than 7MW are applied in batches, the length of the longest blade in China at present reaches 102 meters, and the diameter of the base circle of the blade root also reaches 4800 mm. The blade root is connected with the variable pitch bearing through a bolt, and the size of the blade root directly determines the installation and the service life of the connecting bolt.
The wind power blade is generally formed by adopting a vacuum infusion process, the blade is tightly attached to the mold under the action of vacuum pressure in the forming process, the size change is small, but the blade root is obviously changed along with the separation of the blade from the mold under the comprehensive action of environmental temperature change and self gravity in the post-treatment, storage, transportation and operation processes, and the integral shrinkage and elliptic change can be generated. At present, a blade root baffle plate in the manufacturing process of the domestic blade mainly adopts a single sandwich structure, the load born by the blade root baffle plate is limited due to the fact that the anisotropy of a composite material is not fully utilized, the blade root baffle plate is mainly used for isolating the space between the blade and a hub and preventing glue residue, dust, moisture and the like in the blade from entering the hub to damage equipment, the contraction and the deformation of the blade root cannot be controlled, and the deformation-preventing tool made of steel is used for controlling the size deformation of the blade root in the tolerance range in the manufacturing, storing and transporting processes. However, along with the maximization of the blade, the anti-deformation tool is huge in size and weight, difficult to install and remove in the use process, different tools are needed in the manufacturing, transporting and storing stages, the investment of fixed assets is high, the use effect is not ideal, the blade cannot be in butt joint with a variable pitch bearing in the installation stage, and the problem that a bolt is sheared and broken in the operation process sometimes occurs, so that great safety risk exists.
Disclosure of Invention
The invention aims to provide a root baffle plate of a double-layer sandwich structure and a triangular honeycomb structure for controlling the size deformation and stability of a blade root so as to solve the problems of overall shrinkage and elliptical deformation out-of-tolerance caused by gravity of a wind power blade in the manufacturing, storage, transportation, hoisting and operation stages due to the change of environmental temperature.
In order to achieve the purpose, the invention adopts the following technical scheme:
a wind power blade root baffle comprises a structure main body, an artificial channel and an adhesion area;
the artificial channel is arranged on the structure body, the circumferential direction of the structure body is a bonding area, and the bonding area is connected with the blade root glass fiber reinforced plastic layer through bonding glue.
The invention is further improved in that the structure main body comprises an outer glass fiber reinforced plastic layer, a middle glass fiber reinforced plastic layer, an inner glass fiber reinforced plastic layer, and regular triangular prism sandwich foam and reinforcing ribs which are arranged between two adjacent glass fiber reinforced plastic layers.
The invention has the further improvement that the surface of the regular triangular prism sandwich foam is provided with the diversion trench, so that the resin can flow conveniently during the manufacturing process.
The invention is further improved in that the reinforcing rib is made of glass fiber reinforced plastics formed by crosslinking and curing a plurality of layers of uniaxial glass fiber cloth and resin.
The invention is further improved in that the fiber direction of the reinforcing ribs is consistent with the length direction of the regular triangular prism sandwich foam.
The invention is further improved in that the middle glass fiber reinforced plastic layer separates the regular triangular prism sandwich foam and forms a triangular honeycomb structure with the reinforcing ribs.
The invention is further improved in that the artificial channel further comprises a cover plate and a locking device, the artificial channel is connected with the cover plate through a movable hinge, and the locking device is opened/closed to realize outward opening/closing of the cover plate.
A further improvement of the invention is that the artificial channels are symmetrically arranged on both sides of the 0 ° and 180 ° axes of the structural body and are evenly divided by the 90 ° and 270 ° axes.
The invention is further improved in that the cover plate is made of a glass fiber reinforced plastic layer.
Compared with the prior art, the invention has at least the following beneficial technical effects:
(A) the baffle adopts a double-layer sandwich composite structure, so that the structure is more stable, and the rigidity and the yield strength of the baffle are improved.
(B) The reinforcing ribs among the regular triangular prism sandwich foams are uniformly distributed in the 0 degree/90 degree direction of the baffle, so that the compressive strength of the material in multiple directions is improved.
(C) The reinforcing ribs distributed on the surface of the regular triangular prism sandwich foam and the glass fiber reinforced plastic layer form a stable triangular honeycomb structure, so that the in-plane bending load and deformation resistance are facilitated.
(D) The double-layer composite structure can bear multidirectional loads, and the size of a base circle of a blade root can be changed and controlled in multiple directions.
(E) The sandwich foam structure reduces the use of fiber and resin, and reduces weight and manufacturing cost.
(F) The anti-deformation blade root baffle plate has the advantages of reasonable scheme, simple structure and easiness in realization, can fully play the role of the blade root baffle plate, and saves the manufacturing and maintenance cost of the anti-deformation tool.
Drawings
Fig. 1 is a schematic front view of the present invention.
Fig. 2 is a cross-sectional view in the direction of 0 ° of the present invention.
Fig. 3 is a 90 deg. cross-sectional view of the present invention.
Fig. 4 is a schematic view of the installation of the present invention.
FIG. 5 is a schematic view of the cover plate structure of the artificial channel of the present invention.
Description of reference numerals:
1-outer side glass fiber reinforced plastic layer, 2-bonding region, 3-inner side glass fiber reinforced plastic layer, 4-middle glass fiber reinforced plastic layer, 5-regular triangular prism sandwich foam, 6-reinforcing rib, 7-bonding glue, 8-blade root glass fiber reinforced plastic layer, 9-glass fiber reinforced plastic layer, 10-sealing rubber, 11-movable hinge and 12-locking device.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
As shown in fig. 1 to 5, the wind turbine blade root baffle provided by the invention comprises a structural main body, an artificial channel and a bonding area 2.
The structure main body comprises an outer side glass fiber reinforced plastic layer 1, a middle glass fiber reinforced plastic layer 4, regular triangular prism sandwich foam 5, reinforcing ribs 6 and an inner side glass fiber reinforced plastic layer 3. The glass fiber reinforced plastic layer uniformly wraps the regular triangular prism sandwich foam 5 and the reinforcing ribs 6; the surface of the regular triangular prism sandwich foam 5 is provided with a diversion trench, so that resin can flow conveniently during manufacturing; the reinforcing ribs 6 are made of glass fiber reinforced plastics formed by crosslinking and curing a plurality of layers of uniaxial glass fiber cloth and resin, the specific number of layers is determined by the root base circle diameter of the blade and the production process, and the fiber direction is consistent with the length direction of the regular triangular prism sandwich foam 5; the middle glass fiber reinforced plastic layer 4 separates the regular triangular prism sandwich foam 5 and forms a triangular honeycomb structure with the reinforcing ribs 6, and stable supporting strength is provided.
The man way comprises a cover plate and a locking device 12. The artificial channels are symmetrically arranged on two sides of the axes of 0 degree and 180 degree of the structure body and are uniformly divided by the axes of 90 degrees and 270 degrees; the artificial passage is a reserved access passage, the edge of the artificial passage is made of pure glass fiber reinforced plastic, and the width of the artificial passage is 50 mm; the cover plate is a glass fiber reinforced plastic layer 9 with a certain thickness, and the size of the cover plate is matched with that of the artificial channel; sealing rubber 10 with the width of 10mm and the height of 7mm is bonded on the edge of the cover plate; the manual passage is connected to the cover plate via a movable hinge 11, and the locking device 12 is opened/closed to open/close the cover plate outward.
The root baffle bonding area 2 is connected with a blade root glass fiber reinforced plastic layer 8 through a bonding adhesive 7, and the distance from the blade root baffle bonding area to the end face of the blade root can be automatically adjusted according to the requirement.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A wind power blade root baffle is characterized by comprising a structure main body, an artificial channel and an adhesion area (2);
the artificial channel is arranged on the structure body, the circumferential direction of the structure body is provided with a bonding area (2), and the bonding area (2) is connected with the blade root glass fiber reinforced plastic layer (8) through bonding glue (7).
2. The wind power blade root baffle according to claim 1, wherein the structural body comprises an outer glass fiber reinforced plastic layer (1), a middle glass fiber reinforced plastic layer (4) and an inner glass fiber reinforced plastic layer (3), and a regular triangular prism sandwich foam (5) and a reinforcing rib (6) which are arranged between two adjacent glass fiber reinforced plastic layers.
3. The wind power blade root baffle plate as claimed in claim 2, wherein a guide groove is formed in the surface of the regular triangular prism sandwich foam (5) so as to facilitate the flow of resin during manufacturing.
4. The wind power blade root baffle according to claim 2, wherein the reinforcing ribs (6) are made of glass fiber reinforced plastics formed by crosslinking and curing a plurality of layers of uniaxial glass fiber cloth and resin.
5. A wind blade root baffle according to claim 4, wherein the fiber direction of the reinforcing ribs (6) is consistent with the length direction of the regular triangular prism sandwich foam (5).
6. A wind blade root baffle according to claim 2, characterized in that the intermediate glass fiber reinforced plastic layer (5) separates the regular triangular prism sandwich foam (5) and forms a triangular honeycomb structure with the reinforcing ribs (6).
7. The wind turbine blade root baffle according to claim 1, wherein the man-made channel further comprises a cover plate and a locking device (12), the man-made channel is connected with the cover plate through a movable hinge (11), and the locking device (12) is opened/closed to realize outward opening/closing of the cover plate.
8. The wind blade root baffle of claim 7, wherein the man-made channels are symmetrically disposed on both sides of the 0 ° and 180 ° axes of the structural body and are evenly divided by the 90 ° and 270 ° axes.
9. The wind turbine blade root baffle as claimed in claim 7, wherein the cover plate is made of a glass fiber reinforced plastic layer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210122917.3A CN114412731A (en) | 2022-02-09 | 2022-02-09 | Wind-powered electricity generation blade root baffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210122917.3A CN114412731A (en) | 2022-02-09 | 2022-02-09 | Wind-powered electricity generation blade root baffle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114412731A true CN114412731A (en) | 2022-04-29 |
Family
ID=81279410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210122917.3A Pending CN114412731A (en) | 2022-02-09 | 2022-02-09 | Wind-powered electricity generation blade root baffle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114412731A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605628A (en) * | 2023-10-18 | 2024-02-27 | 中材科技(萍乡)风电叶片有限公司 | Wind power blade root baffle and manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002137307A (en) * | 2000-11-02 | 2002-05-14 | Toray Ind Inc | Blade structure of windmill made of fiber-reinforced resin |
| CN200954704Y (en) * | 2006-06-02 | 2007-10-03 | 彭万刚 | Novel composite board |
| CN102606385A (en) * | 2011-01-24 | 2012-07-25 | 西门子公司 | Wind turbine rotor blade element and wind turbine rotor blade |
| WO2013041190A1 (en) * | 2011-09-21 | 2013-03-28 | Repower Systems Se | Bulkhead for a wind turbine blade |
| CN212272457U (en) * | 2020-06-11 | 2021-01-01 | 国电联合动力技术(保定)有限公司 | Elastic connection structure for wind power blade root baffle |
| CN215054532U (en) * | 2021-05-25 | 2021-12-07 | 湖北凯欣环保科技有限公司 | Fiber cement board composite wall board |
-
2022
- 2022-02-09 CN CN202210122917.3A patent/CN114412731A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002137307A (en) * | 2000-11-02 | 2002-05-14 | Toray Ind Inc | Blade structure of windmill made of fiber-reinforced resin |
| CN200954704Y (en) * | 2006-06-02 | 2007-10-03 | 彭万刚 | Novel composite board |
| CN102606385A (en) * | 2011-01-24 | 2012-07-25 | 西门子公司 | Wind turbine rotor blade element and wind turbine rotor blade |
| WO2013041190A1 (en) * | 2011-09-21 | 2013-03-28 | Repower Systems Se | Bulkhead for a wind turbine blade |
| CN212272457U (en) * | 2020-06-11 | 2021-01-01 | 国电联合动力技术(保定)有限公司 | Elastic connection structure for wind power blade root baffle |
| CN215054532U (en) * | 2021-05-25 | 2021-12-07 | 湖北凯欣环保科技有限公司 | Fiber cement board composite wall board |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605628A (en) * | 2023-10-18 | 2024-02-27 | 中材科技(萍乡)风电叶片有限公司 | Wind power blade root baffle and manufacturing method |
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