CN113858659A - Wind power blade core material structure and laying method thereof - Google Patents
Wind power blade core material structure and laying method thereof Download PDFInfo
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- CN113858659A CN113858659A CN202111165485.6A CN202111165485A CN113858659A CN 113858659 A CN113858659 A CN 113858659A CN 202111165485 A CN202111165485 A CN 202111165485A CN 113858659 A CN113858659 A CN 113858659A
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- 239000011162 core material Substances 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005381 potential energy Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 19
- 240000007182 Ochroma pyramidale Species 0.000 claims description 8
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 8
- 239000004697 Polyetherimide Substances 0.000 claims description 4
- 229920001601 polyetherimide Polymers 0.000 claims description 4
- -1 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229920001893 acrylonitrile styrene Polymers 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 239000003733 fiber-reinforced composite Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 239000011347 resin Substances 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
- B29L2031/085—Wind turbine blades
-
- 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
Abstract
The invention discloses a wind power blade core material structure and a laying method thereof. According to the core material structure and the laying method thereof, the hard plates are arranged on the outer side, and the hard plates and the elastic plates are arranged at intervals, so that the core material can have certain elastic potential energy while keeping strength, the core material is compressed along the elastic direction before being laid, and the elastic potential energy is released after being laid, so that the gaps between the core material and the edge, arc and corner of a main beam and between the core material and the core material after being laid and between the core material and the edge, arc and corner of the main beam can be greatly reduced under the action of the elastic force, resin enrichment formed after pouring forming is effectively avoided, the overall performance of the wind power blade is improved, and the service life of the wind power blade is prolonged.
Description
Technical Field
The invention relates to the technical field of wind power blade core materials, in particular to a wind power blade core material structure and a laying method thereof.
Background
At present, global energy is gradually exhausted, the development and utilization of renewable energy are imminent, wind energy is used as clean energy, the storage capacity is huge, and wind power generation is used as a current mature renewable energy utilization technology and is rapidly developed in countries around the world. The wind power generation technology cannot be supported by a wind turbine generator, and the wind turbine blades are used as important components of the wind turbine generator, so that the manufacturing industry of the wind turbine blades is greatly improved. Wind power blades generally adopt a web hollow structure to reduce the weight of the blades and improve the strength and rigidity of the blades. The core material is light in material and good in performance, and is one of key materials for forming the skin and the web plate in the blade, however, the type, the performance, the structure and the processing mode of the core material obviously influence the overall performance of the skin and the web plate, and finally influence the service performance and the service life of the blade.
At present, core materials adopted for manufacturing wind power blades mainly comprise BALSA wood (BALSA), polyvinyl chloride (PVC), polyethylene terephthalate (PET) and the like. The core is because of its thickness is big, and the texture is hard, can appear not matching between core and the core with prior art when putting the layer, girder edge and core do not match, mould edge arc position and corner are difficult to the problem of type, lead to the core clearance too big, and the too big position in core clearance lacks the holding power, forms rich resin after the infusion shaping easily, in addition, the transport of current core in the forming process can spend a large amount of manpowers and time with repairing the clearance. Therefore, in order to solve the above technical problems, it is necessary to develop a core material structure and a laying method thereof, which have a reasonable structure and convenient use, can effectively reduce the core material gap, and avoid the formation of resin-rich core material during molding.
Disclosure of Invention
Aiming at the technical problems, the invention provides the core material structure which is reasonable in structure and convenient to use, can effectively reduce the core material gap and avoids the formation of resin-rich core material structure during molding and the laying method thereof.
In order to solve the technical problem, the core material structure of the wind power blade comprises hard plates and elastic plates, wherein the hard plates and the elastic plates are arranged at intervals, and the hard plates are arranged on the outer side.
Furthermore, the elastic plate is not less than one layer.
Further, the hard plate and the elastic plate have elastic stress in the arrangement direction.
Further, the hard plate is made of any one of polyethylene terephthalate (PET), polyvinyl chloride (PVC), BALSA wood (BALSA), polymethacrylimide (PM I), polyetherimide (PE I), acrylonitrile-Styrene (SAN), Polystyrene (PS) and fiber reinforced composite materials.
Furthermore, the elastic plate is made of any one of silica gel, rubber and foamed plastic.
The invention also provides a laying method of the wind power blade core material structure, which comprises the following steps:
the method comprises the following steps: external force is given before laying to enable the core material to generate elastic deformation in the arrangement direction of the hard plate material and the elastic plate material, and certain elastic potential energy is stored;
step two: when the core material is laid, the direction of the core material is adjusted according to the laying requirements of the web plate and the skin, so that the stored elastic potential energy can play a role;
step three: after the core material is laid, the core material releases the elastic potential energy of the core material, and the laying is completed.
Further, when the core material is applied to the web in the second step, the laying direction is as follows: the direction of the elastic force generated by the core material is the chord length direction of the web plate.
Further, when the core material is applied to the skin in the second step, the laying direction is as follows: when the core material is laid on the edge of the main beam, the direction of the core material generating the elastic force is the chord length direction of the wind power blade main die.
Further, when the core material is laid on the rest parts except the edge of the main beam, the direction of the core material generating the elastic action is the axial length direction of the wind power blade main die.
Further, in the third step, the core material is attached to the core material beside the girder, the edge of the girder, the arc and the corner under the action of the resilience force.
Compared with the prior art, the invention has the following advantages:
1. according to the core material structure and the laying method thereof, the hard plates are arranged on the outer side, and the hard plates and the elastic plates are arranged at intervals, so that the core material can have certain elastic potential energy while keeping strength, the core material is compressed along the elastic direction before being laid, and the elastic potential energy is released after being laid, so that the gaps between the core material and the edge, arc and corner of a main beam and between the core material and the core material after being laid and between the core material and the edge, arc and corner of the main beam can be greatly reduced under the action of the elastic force, resin enrichment formed after pouring forming is effectively avoided, the overall performance of the wind power blade is improved, and the service life of the wind power blade is prolonged.
2. According to the core material structure and the laying method thereof, the hard plates and the elastic plates are arranged at intervals, the structure is simple, the production is easy, the laying time can be greatly shortened during laying, the probability of quality problems can be reduced after laying, the defect repair is effectively avoided, and the production efficiency is further improved.
3. According to the core material structure and the laying method thereof, the core material with elastic potential energy is used, the laying gap of the core material is greatly reduced, the using amount of the filling resin can be reduced when the filling molding is carried out after the laying, and the production cost of the wind power blade is reduced.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. hard plate, 2, elastic plate.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the core material structure of the wind turbine blade comprises a hard plate material 1 and an elastic plate material 2, wherein the hard plate material 1 and the elastic plate material 2 are arranged at intervals, the hard plate material 1 is arranged at the outer side, the number of the elastic plate material 2 can be selected according to requirements, one layer can be arranged, the hard plate material 1 is arranged at the outer side, multiple layers can be arranged, and the hard plate material 1 is matched with the elastic plate material 2 for arrangement at intervals; the hard board 1 and the elastic board 2 can be bonded into a whole by bonding glue or not, and the hard board 1 and the elastic board 2 are spliced and arranged when the core material is laid.
In order to meet the use requirement, the width, thickness and length of the hard plate 1 and the elastic plate 2 can be uniformly distributed in the same size, and can also be distributed in any size. In order to adapt to the size of the cavity of the skin and web mold, facilitate operation and achieve expected effects, the hard plate 1 and the elastic plate 2 can be processed into shapes with different sizes according to the size of the cavity of the laying position to form a core material matched with the mold.
In order to ensure that the core material can be attached to the core material, the edge of the main beam, the arc shape and the corner of the side through the effect of the resilience force after the core material is laid, the phenomenon that the core material is rich in resin due to the laying clearance of the core material is avoided, and the core material is enabled to have elastic stress in the arrangement direction of the hard plate material 1 and the elastic plate material 2 by arranging the elastic plate material 2.
In order to meet the production requirement of the wind power blade, the hard plate 1 may be a plate made of any one of polyethylene terephthalate (PET), polyvinyl chloride (PVC), BALSA wood (BALSA), polymethacrylimide (PM I), polyetherimide (PE I), acrylonitrile-Styrene (SAN), Polystyrene (PS), and fiber reinforced composite materials.
In order to enable the elastic plate 2 to have excellent elastic potential energy while meeting the production requirement of the blade, the elastic plate 2 may be a plate made of any one of silica gel, rubber and foamed plastic.
The laying method of the wind power blade core material structure comprises the following steps:
the method comprises the following steps: before laying, giving an external force in the arrangement direction of the hard plate 1 and the elastic plate 2 to enable the elastic plate 2 in the core material to generate elastic deformation, and storing certain elastic potential energy;
step two: when the core is laid, the direction of the core is adjusted according to the laying requirements of the web and the skin, so that the stored elastic potential energy can play a rebound role after the core is laid to reduce the clearance of the core, namely: when the core material is applied to the web plate, the direction of the core material generating the elastic force action is the chord length direction of the web plate; when the core material is applied to the skin, when the core material is laid on the edge of the main beam, the direction of the elastic action of the core material is the chord length direction of the main wind blade mould, and when the core material is laid on the rest parts except the edge of the main beam, the direction of the elastic action of the core material is the axial length direction of the main wind blade mould;
step three: after the core is paved, the elastic potential energy stored by the elastic plate 2 is released by the core, the core on the side can be attached to the edge of the main beam, the arc and the corner of the core under the effect of resilience force, so that the gaps between the core and the edge of the main beam, the arc and the corner and between the core are greatly reduced, resin enrichment caused by filling and forming is avoided, and the quality and the service life of the wind power blade are integrally improved.
Tables 1, 2 and 3 respectively show core material gap data obtained by applying the core material structure and the laying method in the manufacturing process of an 80.5 model blade skin test piece, an 80.8 model blade skin test piece and an 80.8 model blade trailing edge web test piece.
As can be seen from the data in the table: when the core material structure and the laying method disclosed by the invention are applied to the production of the wind power blade, the average value of the gaps of the laid core materials can be controlled within 2mm, and in the technical field, after the conventional core materials are used for laying, the gaps of the core materials can be generally controlled within 3mm, so that when the core material structure and the laying method disclosed by the invention are applied to the production of the wind power blade, the gaps of the core materials are greatly reduced, the resin infusion amount is further reduced, the production cost is reduced, and the phenomenon of resin enrichment can be effectively avoided.
Core material clearance data table of model 80.5 blade skin test piece in model 18, month, 2 and day
| Position of(m) | Front edge (mm) | Front edge beam edge (mm) | Rear edge (mm) | Back edge beam edge (mm) |
| 2.61 | 1.5 | 1.4 | 2.1 | 1.5 |
| 3.22 | 1.4 | 2.2 | 1.6 | 2.1 |
| 3.83 | 1.7 | 1.7 | 1.9 | 1.8 |
| 4.44 | 1.8 | 1.6 | 2.3 | 1.7 |
| 5.05 | 1.7 | 1.5 | 1.5 | 1.9 |
| 5.66 | 1.6 | 1.8 | 1.8 | 1.6 |
| 6.27 | 1.8 | 1.9 | 1.5 | 2.1 |
| 6.88 | 2.1 | 2.1 | 1.7 | 2.3 |
| 7.49 | 2.2 | 22 | 1.6 | 2.5 |
| 8.1 | 1.9 | 2.3 | 1.8 | 2.6 |
| 8.71 | 2.1 | 2.1 | 1.7 | 1.9 |
| 9.32 | 1.7 | 2.1 | 2.1 | 1.4 |
| 9.93 | 1.5 | 1.7 | 2.2 | 1.5 |
| 10.54 | 2.3 | 1.6 | 2.1 | 1.5 |
| 11.15 | 2.1 | 1.8 | 2.3 | 1.4 |
| 11.76 | 2.2 | 1.9 | 2.2 | 1.5 |
| 12.37 | 2.1 | 1.5 | 1.9 | 1.3 |
| 12.98 | 2.2 | 1.4 | 1.7 | 1.4 |
| 13.59 | 1.8 | 1.8 | 1.6 | 1.5 |
| 14.2 | 1.5 | 1.7 | 1.8 | 1.6 |
| 14.81 | 1.7 | 1.9 | 1.9 | 1.7 |
| 15.42 | 1.4 | 2.1 | 2.1 | 1.9 |
| 16.03 | 1.8 | 2.5 | 2.2 | 2.2 |
| 16.64 | 1.7 | 2.1 | 1.7 | 2.5 |
| 17.25 | 1.7 | 1.7 | 2.1 | 2 |
| 17.86 | 1.6 | 1.6 | 2.2 | 1.3 |
| 18.47 | 2.1 | 1.6 | 2.3 | 1.8 |
| 19.08 | 2.1 | 1.5 | 2.1 | 1.9 |
| 19.69 | 2.4 | 2.4 | 1.4 | 1.6 |
| 20.3 | 2.4 | 2.1 | 1.5 | 1.9 |
| Mean value of | 1.87 | 1.86 | 1.90 | 1.80 |
Core material clearance data table of model 80.8 blade skin test piece in 28 th, 17 th and 10 th in table
| Position (m) | Front edge (mm) | Front edge beam edge (mm) | Rear edge (mm) | Back edge beam edge (mm) |
| 2.61 | 2.1 | 1.9 | 1.3 | 1.8 |
| 3.22 | 2.3 | 1.6 | 1.6 | 1.7 |
| 3.83 | 2.2 | 1.7 | 1.9 | 1.9 |
| 4.44 | 2.5 | 1.6 | 1.7 | 2 |
| 5.05 | 1.8 | 1.9 | 1.5 | 2.2 |
| 5.66 | 1.7 | 1.4 | 2.1 | 2.2 |
| 627 | 1.9 | 1.8 | 1.8 | 2.1 |
| 6.88 | 1.8 | 1.8 | 2.3 | 2.3 |
| 7.49 | 1.3 | 1.9 | 1.4 | 1.7 |
| 8.1 | 1.9 | 2.1 | 2.6 | 2.7 |
| 8.71 | 1.8 | 2.2 | 2.4 | 1.3 |
| 9.32 | 2.1 | 2.6 | 1.4 | 1.7 |
| 9.93 | 2.1 | 1.4 | 1.7 | 1.6 |
| 10.54 | 1.7 | 1.8 | 2.9 | 1.3 |
| 11.15 | 1.9 | 1.9 | 1.4 | 1.7 |
| 11.76 | 2.2 | 2.1 | 1.8 | 2.1 |
| 12.37 | 1.8 | 2.4 | 2.2 | 2.4 |
| 12.98 | 1.8 | 2.1 | 2.5 | 2.1 |
| 13.59 | 1.9 | 2.4 | 1.7 | 1.6 |
| 14.2 | 1.1 | 1.4 | 1.9 | 1.7 |
| 14.81 | 1.7 | 1.7 | 2.1 | 1.5 |
| 15.42 | 2.1 | 1.6 | 2.1 | 2.1 |
| 16.03 | 1.9 | 1.7 | 1.6 | 2.4 |
| 16.64 | 1.6 | 1.9 | 1.4 | 2.1 |
| 17.25 | 1.9 | 1.8 | 1.9 | 2.1 |
| 17.86 | 1.7 | 1.7 | 1.7 | 1.7 |
| 18.47 | 1.4 | 1.9 | 1.1 | 2.1 |
| 19.08 | 1.8 | 2.3 | 2.5 | 1.3 |
| 19.69 | 1.7 | 2.5 | 2.2 | 2 |
| 20.3 | 1.6 | 1.8 | 1.9 | 2.1 |
| Mean value of | 1.84 | 1.90 | 1.89 | 1.92 |
Core clearance data table of trailing edge web test piece of model 80.8 blade at month 16 and day 38 in table
| Position (m) | Windward side turning side (mm) | Middle (mm) | Leeward side (mm) |
| 2.61 | 1.6 | 0.9 | 1.9 |
| 3.22 | 1.7 | 1.8 | 1.5 |
| 3.83 | 1.3 | 1.3 | 1.6 |
| 4.44 | 1 | 1.4 | 1.4 |
| 5.05 | 1.4 | 1.3 | 1.8 |
| 5.66 | 1.2 | 1.6 | 1.4 |
| 6.27 | 1.6 | 1 | 1.7 |
| 6.88 | 1.6 | 1.4 | 1.4 |
| 7.49 | 1.4 | 1.2 | 1.9 |
| 8.1 | 1.6 | 1.4 | 2 |
| 8.71 | 1.8 | 1.7 | 0.5 |
| 9.32 | 1.9 | 1.6 | 1.7 |
| 9.93 | 1.3 | 2.1 | 1.7 |
| 10.54 | 1.4 | 1.6 | 1.9 |
| 11.15 | 1.5 | 1.8 | 2.1 |
| 11.76 | 1.6 | 1.5 | 2.1 |
| 12.37 | 1.5 | 1.7 | 1.7 |
| 12.98 | 1.5 | 1.8 | 2 |
| 13.59 | 1.5 | 1.6 | 1.7 |
| 14.2 | 1.9 | 1.3 | 1.5 |
| 14.81 | 1.4 | 1.8 | 1.6 |
| 15.42 | 0.9 | 1.5 | 1.4 |
| 16.03 | 1.5 | 1.5 | 1.3 |
| 16.64 | 1.3 | 1.5 | 1.5 |
| 17.25 | 1.6 | 1.8 | 1.7 |
| 17.86 | 1.4 | 1.3 | 1.9 |
| 18.47 | 1.8 | 1.8 | 1.4 |
| 19.08 | 1.7 | 2.2 | 1.2 |
| 19.69 | 1.4 | 2.1 | 1.5 |
| 20.3 | 1.6 | 1.5 | 1.5 |
| Mean value of | 1.50 | 1.57 | 1.62 |
Claims (10)
1. The utility model provides a wind-powered electricity generation blade core structure which characterized in that: the elastic plate comprises a hard plate (1) and an elastic plate (2), wherein the hard plate (1) and the elastic plate (2) are arranged at intervals, and the hard plate (1) is arranged on the outer side.
2. The wind turbine blade core structure of claim 1, wherein: the elastic plate (2) is not less than one layer.
3. The wind turbine blade core structure of claim 1, wherein: the hard plate (1) and the elastic plate (2) have elastic stress in the arrangement direction.
4. The wind turbine blade core structure of claim 1, wherein: the hard plate (1) is made of any one of polyethylene terephthalate (PET), polyvinyl chloride (PVC), BALSA wood (BALSA), Polymethacrylimide (PMI), Polyetherimide (PEI), acrylonitrile-Styrene (SAN), Polystyrene (PS) and fiber reinforced composite materials.
5. The wind turbine blade core structure of claim 1, wherein: the elastic plate (2) is made of any one of silica gel, rubber and foamed plastic.
6. A method of laying down a wind blade core structure according to any of claims 1-5, characterised in that: the method comprises the following steps:
the method comprises the following steps: external force is given before laying to enable the core material to generate elastic deformation in the arrangement direction of the hard board (1) and the elastic board (2), and elastic potential energy is stored;
step two: when the core material is laid, the direction of the core material is adjusted according to the laying requirements of the web plate and the skin, so that the elastic potential energy can play a role;
step three: after the core material is laid, the core material releases the elastic potential energy of the core material, and the laying is completed.
7. A method for laying down a wind blade core structure according to claim 6, characterised in that: when the core material is applied to the web plate in the second step, the laying direction is as follows: the direction of the elastic force generated by the core material is the chord length direction of the web plate.
8. A method for laying down a wind blade core structure according to claim 6, characterised in that: when the core material is applied to the skin in the second step, the laying direction is as follows: when the core material is laid on the edge of the main beam, the direction of the core material generating the elastic force is the chord length direction of the wind power blade main die.
9. A method of laying down a wind blade core structure according to claim 8, characterised in that: when the core material is laid on the rest parts except the edge of the main beam, the direction of the core material generating the elastic action is the axial length direction of the wind power blade main die.
10. A method for laying down a wind blade core structure according to claim 6, characterised in that: and in the third step, the core material is attached to the core material beside the girder, the edge of the girder, the arc and the corner under the action of the resilience force.
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| US20090087318A1 (en) * | 2007-09-27 | 2009-04-02 | General Electric Company | Wind turbine spars with jointed shear webs |
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| CN109882364A (en) * | 2019-03-26 | 2019-06-14 | 株洲时代新材料科技股份有限公司 | A kind of carbon fiber wind electricity blade crossbeam and preparation method thereof |
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| CN112428597A (en) * | 2020-10-30 | 2021-03-02 | 天津中车风电叶片工程有限公司 | Method for preventing composite material from forming resin-rich area |
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| CN104936768A (en) * | 2012-11-20 | 2015-09-23 | 维斯塔斯风力系统有限公司 | Wind turbine blades and method of manufacturing same |
| US20200025168A1 (en) * | 2018-07-23 | 2020-01-23 | Siemens Gamesa Renewable Energy A/S | Composite material, a wind turbine blade, a wind turbine and a method for producing a composite material |
| CN109882364A (en) * | 2019-03-26 | 2019-06-14 | 株洲时代新材料科技股份有限公司 | A kind of carbon fiber wind electricity blade crossbeam and preparation method thereof |
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