WO2015034204A1 - Girder of wind turbine blade and manufacturing method thereof - Google Patents

Girder of wind turbine blade and manufacturing method thereof Download PDF

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Publication number
WO2015034204A1
WO2015034204A1 PCT/KR2014/007988 KR2014007988W WO2015034204A1 WO 2015034204 A1 WO2015034204 A1 WO 2015034204A1 KR 2014007988 W KR2014007988 W KR 2014007988W WO 2015034204 A1 WO2015034204 A1 WO 2015034204A1
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WO
WIPO (PCT)
Prior art keywords
length direction
forming
girder
wind turbine
turbine blade
Prior art date
Application number
PCT/KR2014/007988
Other languages
French (fr)
Inventor
Hyung-joon BANG
Soo-Hyun Kim
Moon-Suk Jang
Original Assignee
Korea Institute Of Energy Research
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Filing date
Publication date
Application filed by Korea Institute Of Energy Research filed Critical Korea Institute Of Energy Research
Publication of WO2015034204A1 publication Critical patent/WO2015034204A1/en

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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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape 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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • 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
    • 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
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/30—Manufacture with deposition of material
    • F05D2230/31—Layer deposition
    • 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
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the 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

Definitions

  • the present invention relates to a girder of a wind turbine blade used for wind power generation and a manufacturing method thereof.
  • FIG. 1 is a plan view of a general wind turbine blade and a cross-sectional view of a girder of a wind turbine blade.
  • a wind turbine blade is generally formed of a composite structure in which a girder G for supporting a bending load applied to the wind turbine blade and an outer cover F enclosing the girder are manufactured by a resin infusion molding(RIM) method.
  • RIM resin infusion molding
  • the girder of the wind turbine blade is generally manufactured by manually stacking and arranging a sheet type of prepreg in which a resin is impregnated, molding the stacked and arranged prepreg using an autoclave molding method under the high temperature and high pressure condition, and then moving the molded matter onto a blade mold to be integrated with a skin by the RIM method.
  • the girder of the wind turbine blade has a very large size and a very large thickness, and therefore it is difficult to arrange the prepreg.
  • the girder of the wind turbine blade may have a problem in that since an operation of stacking the prepreg is performed manually, foreign matters intrude into the material sheets during the process of stacking the material sheets to cause defects.
  • Patent Document 1 Korean Utility Model Registration No. 0420663 (June 28, 2006)
  • An object of the present invention is to provide a girder of a wind turbine blade and a manufacturing method thereof capable of implementing an automatic process and preventing intrusion of foreign matters during the automatic process.
  • a manufacturing method of a girder of a wind turbine blade includes: forming a plurality of material blocks 10 by stacking a plurality of material sheets 1 in parallel in a height direction (S10); forming a plurality of material layers 100 by arranging and connecting the material blocks 10 in parallel in a length direction (S20); stacking the material layers 100 in parallel in the height direction (S30); and forming a girder 1000 of a wind turbine blade by impregnating a resin between the material layers 100, respectively (S40).
  • the forming of the material layer (S20) may include: forming depressed grooves 11-1 and 11-2 on one surface in a length direction of the material block 10; forming hooks 12-1 and 12-2 corresponding to the depressed grooves 11-1 and 11-2 on one surface in a length direction of another material block 10; and connecting the material blocks 10 to each other by inserting the hooks 12-1 and 12-2 of another material block 10 into the depressed grooves 11-1 and 11-2 of the material block 10.
  • the depressed groove 11-1 may be formed at a center of the one surface in the length direction of the material block 10 and the hook 12-1 may be formed at a center of the one surface in the length direction of another material block 10.
  • the depressed groove 11-2 may be formed at one portion of the one surface in the length direction of the material block 10 and the hook 12-2 may be formed at one portion of the one surface in the length direction of another material block 10.
  • the material layer 100 may be stacked so that a connection line in the length direction and a connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other.
  • the material sheet 1 may be made of a composite material.
  • a girder 1000 of a wind turbine blade includes: a plurality of material blocks 10 formed by stacking a plurality of material sheets 1 in parallel in a height direction; and a plurality of material layers 100 formed by arranging and connecting the material blocks 10 in parallel in a length direction, in which the material layers 100 may be formed by being stacked in parallel in the height direction and impregnating a resin therebetween.
  • Depressed grooves 11-1 and 11-2 may be formed on one surface in a length direction of the material block 10 and hooks 12-1 and 12-2 may be formed on one surface in a length direction of another material block 10 and the material blocks 10 may be connected to each other by inserting the hooks 12-1 and 12-2 of another material block 10 into the depressed grooves 11-1 and 11-2 of the material block 10.
  • the depressed groove 11-1 may be formed at a center of the one surface in the length direction of the material block 10 and the hook 12-1 may be formed at a center of the one surface in the length direction of another material block 10.
  • the depressed groove 11-2 may be formed at one portion of the one surface in the length direction of the material block 10 and the hook 12-2 may be formed at one portion of the one surface in the length direction of another material block 10.
  • the material layer 100 may be stacked so that a connection line in the length direction and a connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other.
  • the material sheet 1 may be made of a composite material.
  • the manufacturing method of a girder of a wind turbine blade includes forming the plurality of material blocks by stacking the plurality of material sheet in parallel in the height direction (S10), forming the plurality of material layers by arranging and connecting the material blocks in parallel in the length direction; stacking the material layers in parallel in the height direction, and forming the girder of the wind turbine blade by impregnating a resin between the material layers, respectively, to form the material blocks having a relatively small size by stacking the material sheets, thereby implementing the automatic process and preventing the foreign matters from intruding between the material sheets.
  • S10 height direction
  • the manufacturing method of a girder of a wind turbine blade includes forming the plurality of material blocks by stacking the plurality of material sheet in parallel in the height direction (S10), forming the plurality of material layers by arranging and connecting the material blocks in parallel in the length direction; stacking the material layers in parallel in the height direction, and forming the girder of the wind turbine blade by impregnating a resin between the
  • the forming of the material layers includes forming the depressed groove on the one surface in the length direction of the material block, forming the hook corresponding to the depressed groove on the one surface in the length direction of another material block, and inserting the hook of another material block into the depressed groove of the material block to connect the material blocks to each other, thereby more firmly connecting the material blocks to each other in the length direction.
  • FIG. 1 is a plan view of a general wind turbine blade and a cross-sectional view of a girder of a wind turbine blade;
  • FIG. 2 is a flow chart illustrating a manufacturing method of a girder of a wind turbine blade according to an exemplary embodiment of the present invention
  • FIG. 3 is a diagram schematically illustrating a process of forming a material block according to an exemplary embodiment of the present invention
  • FIG. 4 is a diagram schematically illustrating a process of forming a material layer according to an exemplary embodiment of the present invention
  • FIG. 5 is a diagram schematically illustrating a process of stacking a material layer according to an exemplary embodiment of the present invention
  • FIG. 6 is a diagram schematically illustrating a process of forming a material layer according to a first exemplary embodiment of the present invention.
  • FIG. 7 is a diagram schematically illustrating a process of forming a material layer according to a second exemplary embodiment of the present invention.
  • the present invention relates to a girder of a wind turbine blade used for wind power generation and a manufacturing method thereof.
  • FIG. 2 is a flow chart illustrating a manufacturing method of a girder of a wind turbine blade according to an exemplary embodiment of the present invention
  • FIG. 3 is a diagram schematically illustrating a process of forming a material block according to an exemplary embodiment of the present invention
  • FIG. 4 is a diagram schematically illustrating a process of forming a material layer according to an exemplary embodiment of the present invention
  • FIG. 5 is a diagram schematically illustrating a process of stacking a material layer according to an exemplary embodiment of the present invention.
  • the manufacturing method of a girder of a wind turbine blade may be configured to include forming a material block (S10), forming a material layer (S20), stacking the material layer (S30), and forming a girder.
  • a plurality of material blocks 10 are formed by stacking a plurality of material sheets 1 in parallel in a height direction.
  • the material sheet 1 may be made of a composite material including a glass fiber and a carbon fiber.
  • a length in a length direction of the material sheet 1 may be formed to be shorter than that in the length direction of the material sheet 1 according to the related art so that the material sheets 1 are stacked in parallel in a height direction to form the material blocks 10.
  • the material blocks 10 are arranged in parallel in a length direction and then opposite surfaces on which the material blocks 10 are opposite to each other in the length direction are each connected to each other to form the plurality of material layers 100.
  • a fitting coupling method, a pressing coupling method, and a bonding coupling method may be used, but the present invention is not limited thereto.
  • the material layers 100 are stacked in parallel in a height direction.
  • contact surfaces on which the material layers 100 contact each other are each provided with rugged portions having a rugged shaped and thus the material layers 100 may be fixed so as not to move in the length direction while being stacked in parallel in the height direction.
  • the girder 1000 of the wind turbine blade is formed by sealing the material layers 100 with a vacuum film (not illustrated) and then supplying a resin to an inside of the vacuum film to be impregnated between the material layers 100, that is, between the material blocks 10 and between the material sheets 1, respectively.
  • the manufacturing method of a girder of a wind turbine blade includes: forming the plurality of material blocks 10 by stacking the plurality of material sheets 1 in parallel in a height direction (S10); forming the plurality of material layers 100 by arranging and connecting the material blocks 10 in parallel in a length direction (S20); stacking the material layers 100 in parallel in the height direction (S30); and forming the girder 1000 of the wind turbine blade by impregnating a resin between the material layers 100, respectively (S40), to form the material blocks 10 having a relatively small size by stacking the material sheets 1, thereby implementing the automatic process and preventing the foreign matters from intruding between the material sheets 1.
  • the forming of the material layer (S20) may include more firmly coupling the material blocks 10, in more detail, forming depressed grooves 11-1 and 11-2 on one surface in a length direction of the material block 10, forming hooks 12-1 and 12-2 corresponding to the depressed grooves 11-1 and 11-2 on one surface in a length direction of another material block 10, and connecting the material blocks 10 to each other by inserting the hooks 12-1 and 12-2 of another material block 10 into the depressed groove 11-1 of the material block 10.
  • FIG. 6 is a diagram schematically illustrating a process of forming a material layer according to a first exemplary embodiment of the present invention.
  • the depressed groove 11-1 may be formed at a center of the one surface in the length direction of the material block 10 and the hook 12-1 may be formed at a center of the one surface in the length direction of another material block 10.
  • the depressed groove 11-1 and the hook 12-1 are formed in a form in which they are assembled and disassembled in the length direction.
  • the depressed groove 11-1 may be formed in a form in which the center of the one surface in the length direction of the material block 10 is depressed in a plate shape and the hook 12-1 may be formed in a form in which the center of the one surface in the length direction of another material block 10 protrudes in a plate shape, but the present invention is not limited thereto.
  • the depressed groove 11-1 and the hook 12-1 may be easily assembled and disassembled.
  • FIG. 7 is a diagram schematically illustrating a process of forming a material layer according to a second exemplary embodiment of the present invention.
  • the depressed groove 11-2 may be formed at one portion of the one surface in the length direction of the material block 10 and the hook 12-2 may be formed at one portion of the one surface in the length direction of another material block 10.
  • the depressed groove 11-2 and the hook 12-2 are formed in a form in which they are assembled and disassembled in both the length direction and the height direction.
  • the depressed groove 11-2 may be formed in a form in which the one portion of the one surface in the length direction of the material block 10 is depressed in a plate shape and the hook 12-2 may be formed in a form in which the one portion of the one surface in the length direction of another material block 10 protrudes in a plate shape, but the present invention is not limited thereto.
  • the depressed groove 11-2 and the hook 12-2 may be assembled and disassembled in both the length direction and the height direction.
  • the material layer 100 may be stacked so that a connection line in the length direction and a connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other.
  • the material layer 100 is stacked so that the connection line in the length direction and the connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other, thereby making the connectivity formed by the stacking of the material layers 100 more firm.
  • the plurality of material blocks 10 are formed by stacking the plurality of material sheets 1 in parallel in the height direction, the plurality of material layers 100 are formed by arranging and connecting the material blocks 10 in parallel in the length direction, and the material layers 100 are formed by being stacked in parallel in the height direction and impregnating the resin therebetween.
  • the material sheet 1 may be made of a composite material including glass fiber and carbon fiber.
  • a length in the length direction of the material sheet 1 may be formed to be shorter than that in the length direction of the material sheet 1 according to the related art so that the material sheets 1 are stacked in parallel in the height direction to form the material blocks 10.
  • a fitting coupling method, a pressing coupling method, and a bonding coupling method may be used, but the present invention is not limited thereto.
  • the impregnation of the resin between the material layers 100 may be made by sealing the material layers 100 with the vacuum film (not illustrated) and then supplying the resin to the inside of the vacuum film to be impregnated between the material layers 100, that is, between the material blocks 10 and between the material sheets 1, respectively.
  • an ultrasonic vibration may be applied to the inside of the vacuum film so that the resin may be more easily infiltrated between the material layers 100, that is, between the material blocks 10 and the material sheets 1.
  • the depressed grooves 11-1 and 11-2 are formed on the one surface in the length direction of the material block 10
  • the hooks 12-1 and 12-2 are formed on the one surface in the length direction of another material block 10
  • the hooks 12-1 and 12-2 of another material block 10 are inserted into the depressed grooves 11-1 and 11-2 of the material block 10 to connect the material blocks 10 to each other.
  • the depressed groove 11-1 may be formed at the center of the one surface in the length direction of the material block 10 and the hook 12-1 may be formed at the center of the one surface in the length direction of another material block 10.
  • the depressed groove 11-1 may be formed in a form in which the center of the one surface in the length direction of the material block 10 is depressed in a plate shape and the hook 12-1 may be formed in a form in which the center of the one surface in the length direction of another material block 10 protrudes in a plate shape, but the present invention is not limited thereto.
  • the depressed groove 11-2 may be formed at the one portion of the one surface in the length direction of the material block 10 and the hook 12-2 may be formed at the one portion of the one surface in the length direction of another material block 10.
  • the depressed groove 11-2 may be formed in a form in which the one portion of the one surface in the length direction of the material block 10 is depressed in the plate shape and the hook 12-2 may be formed in a form in which the one portion of the one surface in the length direction of another material block 10 protrudes in the plate shape, but the present invention is not limited thereto.
  • the material layer 100 is stacked so that the connection line in the length direction and the connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other, thereby making the connectivity achieved by the stacking of the material layers 100 more firm.
  • the present invention is not limited to the above-mentioned exemplary embodiments, and may be variously applied, and may be variously modified without departing from the gist of the present invention claimed in the claims.

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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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Abstract

According to an exemplary embodiment of the present invention, a manufacturing method of a girder of a wind turbine blade includes: forming a plurality of material blocks 10 by stacking a plurality of material sheets 1 in parallel in a height direction (S10); forming a plurality of material layers 100 by arranging and connecting the material blocks 10 in parallel in a length direction (S20); stacking the material layers 100 in parallel in the height direction (S30); and forming a girder 1000 of a wind turbine blade by impregnating a resin between the material layers 100, respectively (S40).

Description

GIRDER OF WIND TURBINE BLADE AND MANUFACTURING METHOD THEREOF
The present invention relates to a girder of a wind turbine blade used for wind power generation and a manufacturing method thereof.
FIG. 1 is a plan view of a general wind turbine blade and a cross-sectional view of a girder of a wind turbine blade.
As illustrated in FIG. 1, a wind turbine blade is generally formed of a composite structure in which a girder G for supporting a bending load applied to the wind turbine blade and an outer cover F enclosing the girder are manufactured by a resin infusion molding(RIM) method.
The girder of the wind turbine blade is generally manufactured by manually stacking and arranging a sheet type of prepreg in which a resin is impregnated, molding the stacked and arranged prepreg using an autoclave molding method under the high temperature and high pressure condition, and then moving the molded matter onto a blade mold to be integrated with a skin by the RIM method.
In this case, the girder of the wind turbine blade has a very large size and a very large thickness, and therefore it is difficult to arrange the prepreg.
Further, the girder of the wind turbine blade may have a problem in that since an operation of stacking the prepreg is performed manually, foreign matters intrude into the material sheets during the process of stacking the material sheets to cause defects.
As technologies associated therewith, in the blade rotating by wind power described in Korean Utility Model Registration No. 0420663, a blade made of a composite material which includes an outer wall member maintaining a shape of the blade, a single-layer or multi-layer inner wall member existing inside the outer wall member to maintain a strength of the blade, and rigid cellular plastic filled inside the inner wall member has been proposed.
[Related Art Document]
[Patent Document]
(Patent Document 1) Korean Utility Model Registration No. 0420663 (June 28, 2006)
An object of the present invention is to provide a girder of a wind turbine blade and a manufacturing method thereof capable of implementing an automatic process and preventing intrusion of foreign matters during the automatic process.
In one general aspect, a manufacturing method of a girder of a wind turbine blade includes: forming a plurality of material blocks 10 by stacking a plurality of material sheets 1 in parallel in a height direction (S10); forming a plurality of material layers 100 by arranging and connecting the material blocks 10 in parallel in a length direction (S20); stacking the material layers 100 in parallel in the height direction (S30); and forming a girder 1000 of a wind turbine blade by impregnating a resin between the material layers 100, respectively (S40).
The forming of the material layer (S20) may include: forming depressed grooves 11-1 and 11-2 on one surface in a length direction of the material block 10; forming hooks 12-1 and 12-2 corresponding to the depressed grooves 11-1 and 11-2 on one surface in a length direction of another material block 10; and connecting the material blocks 10 to each other by inserting the hooks 12-1 and 12-2 of another material block 10 into the depressed grooves 11-1 and 11-2 of the material block 10.
In the forming of the material layer (S20), the depressed groove 11-1 may be formed at a center of the one surface in the length direction of the material block 10 and the hook 12-1 may be formed at a center of the one surface in the length direction of another material block 10.
In the forming of the material layer (S20), the depressed groove 11-2 may be formed at one portion of the one surface in the length direction of the material block 10 and the hook 12-2 may be formed at one portion of the one surface in the length direction of another material block 10.
In the stacking of the material layer (S30), the material layer 100 may be stacked so that a connection line in the length direction and a connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other.
The material sheet 1 may be made of a composite material.
In another general aspect, a girder 1000 of a wind turbine blade includes: a plurality of material blocks 10 formed by stacking a plurality of material sheets 1 in parallel in a height direction; and a plurality of material layers 100 formed by arranging and connecting the material blocks 10 in parallel in a length direction, in which the material layers 100 may be formed by being stacked in parallel in the height direction and impregnating a resin therebetween.
Depressed grooves 11-1 and 11-2 may be formed on one surface in a length direction of the material block 10 and hooks 12-1 and 12-2 may be formed on one surface in a length direction of another material block 10 and the material blocks 10 may be connected to each other by inserting the hooks 12-1 and 12-2 of another material block 10 into the depressed grooves 11-1 and 11-2 of the material block 10.
The depressed groove 11-1 may be formed at a center of the one surface in the length direction of the material block 10 and the hook 12-1 may be formed at a center of the one surface in the length direction of another material block 10.
The depressed groove 11-2 may be formed at one portion of the one surface in the length direction of the material block 10 and the hook 12-2 may be formed at one portion of the one surface in the length direction of another material block 10.
The material layer 100 may be stacked so that a connection line in the length direction and a connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other.
The material sheet 1 may be made of a composite material.
As described above, according to the exemplary embodiments of the present invention, the manufacturing method of a girder of a wind turbine blade includes forming the plurality of material blocks by stacking the plurality of material sheet in parallel in the height direction (S10), forming the plurality of material layers by arranging and connecting the material blocks in parallel in the length direction; stacking the material layers in parallel in the height direction, and forming the girder of the wind turbine blade by impregnating a resin between the material layers, respectively, to form the material blocks having a relatively small size by stacking the material sheets, thereby implementing the automatic process and preventing the foreign matters from intruding between the material sheets.
Further, according to the exemplary embodiments of the present invention, the forming of the material layers includes forming the depressed groove on the one surface in the length direction of the material block, forming the hook corresponding to the depressed groove on the one surface in the length direction of another material block, and inserting the hook of another material block into the depressed groove of the material block to connect the material blocks to each other, thereby more firmly connecting the material blocks to each other in the length direction.
In addition, it is possible to make the connectivity achieved by the stacking of the material layers more firm by stacking the material layers to make the connection line in the length direction and the connection line in the height direction of the material blocks forming the material layers deviate from each other.
The above and other objects, features and advantages of the present invention will become apparent from the following description of preferred embodiments given in conjunction with the accompanying drawings, in which:
FIG. 1 is a plan view of a general wind turbine blade and a cross-sectional view of a girder of a wind turbine blade;
FIG. 2 is a flow chart illustrating a manufacturing method of a girder of a wind turbine blade according to an exemplary embodiment of the present invention;
FIG. 3 is a diagram schematically illustrating a process of forming a material block according to an exemplary embodiment of the present invention;
FIG. 4 is a diagram schematically illustrating a process of forming a material layer according to an exemplary embodiment of the present invention;
FIG. 5 is a diagram schematically illustrating a process of stacking a material layer according to an exemplary embodiment of the present invention;
FIG. 6 is a diagram schematically illustrating a process of forming a material layer according to a first exemplary embodiment of the present invention; and
FIG. 7 is a diagram schematically illustrating a process of forming a material layer according to a second exemplary embodiment of the present invention.
Hereinafter, a technical idea of the present invention will be described in more detail with reference to the accompanying drawings.
However, the accompanying drawings are only examples shown in order to describe the technical idea of the present invention in more detail. Therefore, the technical idea of the present invention is not limited to shapes of the accompanying drawings.
The present invention relates to a girder of a wind turbine blade used for wind power generation and a manufacturing method thereof.
Hereinafter, a manufacturing method of a girder of a wind turbine blade according to an exemplary embodiment of the present invention will be described.
FIG. 2 is a flow chart illustrating a manufacturing method of a girder of a wind turbine blade according to an exemplary embodiment of the present invention, FIG. 3 is a diagram schematically illustrating a process of forming a material block according to an exemplary embodiment of the present invention, FIG. 4 is a diagram schematically illustrating a process of forming a material layer according to an exemplary embodiment of the present invention, and FIG. 5 is a diagram schematically illustrating a process of stacking a material layer according to an exemplary embodiment of the present invention.
As illustrated in FIG. 2, the manufacturing method of a girder of a wind turbine blade according to the exemplary embodiment of the present invention may be configured to include forming a material block (S10), forming a material layer (S20), stacking the material layer (S30), and forming a girder.
Referring to FIG. 3, in the forming of the material block (S10), a plurality of material blocks 10 are formed by stacking a plurality of material sheets 1 in parallel in a height direction.
In this case, the material sheet 1 may be made of a composite material including a glass fiber and a carbon fiber.
Further, a length in a length direction of the material sheet 1 may be formed to be shorter than that in the length direction of the material sheet 1 according to the related art so that the material sheets 1 are stacked in parallel in a height direction to form the material blocks 10.
Referring to FIG. 4, in the forming of the material layer (S20), the material blocks 10 are arranged in parallel in a length direction and then opposite surfaces on which the material blocks 10 are opposite to each other in the length direction are each connected to each other to form the plurality of material layers 100.
In this case, as a method for connecting the material blocks 10 to each other, a fitting coupling method, a pressing coupling method, and a bonding coupling method may be used, but the present invention is not limited thereto.
Referring to FIG. 5, in the stacking of the material layer (S30), the material layers 100 are stacked in parallel in a height direction.
In this case, contact surfaces on which the material layers 100 contact each other are each provided with rugged portions having a rugged shaped and thus the material layers 100 may be fixed so as not to move in the length direction while being stacked in parallel in the height direction.
In the forming of the girder of a wind turbine blade (S40), resin is impregnated between the material layers 100, respectively, to form a girder 1000 of a wind turbine blade.
In more detail, in the forming of the girder of the wind turbine blade (S40), the girder 1000 of the wind turbine blade is formed by sealing the material layers 100 with a vacuum film (not illustrated) and then supplying a resin to an inside of the vacuum film to be impregnated between the material layers 100, that is, between the material blocks 10 and between the material sheets 1, respectively.
Therefore, the manufacturing method of a girder of a wind turbine blade according to the exemplary embodiment of the present invention includes: forming the plurality of material blocks 10 by stacking the plurality of material sheets 1 in parallel in a height direction (S10); forming the plurality of material layers 100 by arranging and connecting the material blocks 10 in parallel in a length direction (S20); stacking the material layers 100 in parallel in the height direction (S30); and forming the girder 1000 of the wind turbine blade by impregnating a resin between the material layers 100, respectively (S40), to form the material blocks 10 having a relatively small size by stacking the material sheets 1, thereby implementing the automatic process and preventing the foreign matters from intruding between the material sheets 1.
Meanwhile, the forming of the material layer (S20) may include more firmly coupling the material blocks 10, in more detail, forming depressed grooves 11-1 and 11-2 on one surface in a length direction of the material block 10, forming hooks 12-1 and 12-2 corresponding to the depressed grooves 11-1 and 11-2 on one surface in a length direction of another material block 10, and connecting the material blocks 10 to each other by inserting the hooks 12-1 and 12-2 of another material block 10 into the depressed groove 11-1 of the material block 10.
Hereinafter, in the forming of the material layer (S20), various exemplary embodiments of a shape of the depressed grooves 11-1 and 11-2 and a shape of the hooks 12-1 and 12-2 will be described.
<First Exemplary Embodiment>
FIG. 6 is a diagram schematically illustrating a process of forming a material layer according to a first exemplary embodiment of the present invention.
As illustrated in FIG. 6, in the forming of the material layer (S20) according to the first exemplary embodiment of the present invention, the depressed groove 11-1 may be formed at a center of the one surface in the length direction of the material block 10 and the hook 12-1 may be formed at a center of the one surface in the length direction of another material block 10.
That is, in the forming of the material layer (S20) according to the first exemplary embodiment of the present invention, the depressed groove 11-1 and the hook 12-1 are formed in a form in which they are assembled and disassembled in the length direction.
Meanwhile, referring to FIG. 5, the depressed groove 11-1 may be formed in a form in which the center of the one surface in the length direction of the material block 10 is depressed in a plate shape and the hook 12-1 may be formed in a form in which the center of the one surface in the length direction of another material block 10 protrudes in a plate shape, but the present invention is not limited thereto.
Therefore, in the forming of the material layer (S20) according to the first exemplary embodiment of the present invention, the depressed groove 11-1 and the hook 12-1 may be easily assembled and disassembled.
<Second Exemplary Embodiment>
FIG. 7 is a diagram schematically illustrating a process of forming a material layer according to a second exemplary embodiment of the present invention.
As illustrated in FIG. 7, in the forming of the material layer (S20) according to the second exemplary embodiment of the present invention, the depressed groove 11-2 may be formed at one portion of the one surface in the length direction of the material block 10 and the hook 12-2 may be formed at one portion of the one surface in the length direction of another material block 10.
That is, in the forming of the material layer (S20) according to the second exemplary embodiment of the present invention, the depressed groove 11-2 and the hook 12-2 are formed in a form in which they are assembled and disassembled in both the length direction and the height direction.
Meanwhile, referring to FIG. 7, the depressed groove 11-2 may be formed in a form in which the one portion of the one surface in the length direction of the material block 10 is depressed in a plate shape and the hook 12-2 may be formed in a form in which the one portion of the one surface in the length direction of another material block 10 protrudes in a plate shape, but the present invention is not limited thereto.
Therefore, in the forming of the material layer (S20) according to the second exemplary embodiment of the present invention, the depressed groove 11-2 and the hook 12-2 may be assembled and disassembled in both the length direction and the height direction.
Meanwhile, in the stacking of the material layer (S30), the material layer 100 may be stacked so that a connection line in the length direction and a connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other.
Further, the material layer 100 is stacked so that the connection line in the length direction and the connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other, thereby making the connectivity formed by the stacking of the material layers 100 more firm.
Hereinafter, the girder 1000 of the wind turbine blade according to the exemplary embodiment of the present invention will be described.
Referring to FIG. 5, in the girder 1000 of the wind turbine blade according to the exemplary embodiment of the present invention, the plurality of material blocks 10 are formed by stacking the plurality of material sheets 1 in parallel in the height direction, the plurality of material layers 100 are formed by arranging and connecting the material blocks 10 in parallel in the length direction, and the material layers 100 are formed by being stacked in parallel in the height direction and impregnating the resin therebetween.
In this case, the material sheet 1 may be made of a composite material including glass fiber and carbon fiber.
Further, a length in the length direction of the material sheet 1 may be formed to be shorter than that in the length direction of the material sheet 1 according to the related art so that the material sheets 1 are stacked in parallel in the height direction to form the material blocks 10.
Further, as a method for connecting the material blocks 10 to each other, a fitting coupling method, a pressing coupling method, and a bonding coupling method may be used, but the present invention is not limited thereto.
Further, the impregnation of the resin between the material layers 100 may be made by sealing the material layers 100 with the vacuum film (not illustrated) and then supplying the resin to the inside of the vacuum film to be impregnated between the material layers 100, that is, between the material blocks 10 and between the material sheets 1, respectively.
In this case, an ultrasonic vibration may be applied to the inside of the vacuum film so that the resin may be more easily infiltrated between the material layers 100, that is, between the material blocks 10 and the material sheets 1.
Meanwhile, in the girder 1000 of the wind turbine blade, the depressed grooves 11-1 and 11-2 are formed on the one surface in the length direction of the material block 10, the hooks 12-1 and 12-2 are formed on the one surface in the length direction of another material block 10, and the hooks 12-1 and 12-2 of another material block 10 are inserted into the depressed grooves 11-1 and 11-2 of the material block 10 to connect the material blocks 10 to each other.
Further, in the girder 1000 of the wind turbine blade, the depressed groove 11-1 may be formed at the center of the one surface in the length direction of the material block 10 and the hook 12-1 may be formed at the center of the one surface in the length direction of another material block 10.
In this case, the depressed groove 11-1 may be formed in a form in which the center of the one surface in the length direction of the material block 10 is depressed in a plate shape and the hook 12-1 may be formed in a form in which the center of the one surface in the length direction of another material block 10 protrudes in a plate shape, but the present invention is not limited thereto.
Further, in the girder 1000 of the wind turbine blade, the depressed groove 11-2 may be formed at the one portion of the one surface in the length direction of the material block 10 and the hook 12-2 may be formed at the one portion of the one surface in the length direction of another material block 10.
In this case, the depressed groove 11-2 may be formed in a form in which the one portion of the one surface in the length direction of the material block 10 is depressed in the plate shape and the hook 12-2 may be formed in a form in which the one portion of the one surface in the length direction of another material block 10 protrudes in the plate shape, but the present invention is not limited thereto.
Further, the material layer 100 is stacked so that the connection line in the length direction and the connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other, thereby making the connectivity achieved by the stacking of the material layers 100 more firm.
The present invention is not limited to the above-mentioned exemplary embodiments, and may be variously applied, and may be variously modified without departing from the gist of the present invention claimed in the claims.
[Detailed Description of Main Elements]
1: Material sheet
10: Material block
11-1, 11-2: Depressed groove 12-1, 12-2: Hook
100: Material layer
1000: Girder of wind turbine blade

Claims (12)

  1. A manufacturing method of a girder of a wind turbine blade, comprising:
    forming a plurality of material blocks 10 by stacking a plurality of material sheets 1 in parallel in a height direction (S10);
    forming a plurality of material layers 100 by arranging and connecting the material blocks 10 in parallel in a length direction (S20);
    stacking the material layers 100 in parallel in the height direction (S30); and
    forming a girder 1000 of a wind turbine blade by impregnating a resin between the material layers 100, respectively (S40).
  2. The manufacturing method of claim 1, wherein the forming of the material layer (S20) includes:
    forming depressed grooves 11-1 and 11-2 on one surface in the length direction of the material block 10;
    forming hooks 12-1 and 12-2 corresponding to the depressed grooves 11-1 and 11-2 on one surface in a length direction of another material block 10; and
    connecting the material blocks 10 to each other by inserting the hooks 12-1 and 12-2 of another material block 10 into the depressed grooves 11-1 and 11-2 of the material block 10.
  3. The manufacturing method of claim 2, wherein in the forming of the material layer (S20), the depressed groove 11-1 is formed at a center of the one surface in the length direction of the material block 10 and the hook 12-1 is formed at a center of the one surface in the length direction of another material block 10.
  4. The manufacturing method of claim 2, wherein in the forming of the material layer (S20), the depressed groove 11-2 is formed at one portion of the one surface in the length direction of the material block 10 and the hook 12-2 is formed at one portion of the one surface in the length direction of another material block 10.
  5. The manufacturing method of claim 1, wherein in the stacking of the material layer (S30), the material layer 100 is stacked so that a connection line in the length direction and a connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other.
  6. The manufacturing method of claim 1, wherein the material sheet 1 is made of a composite material.
  7. A girder 1000 of a wind turbine blade, comprising:
    a plurality of material blocks 10 formed by stacking a plurality of material sheets 1 in parallel in a height direction; and
    a plurality of material layers 100 formed by arranging and connecting the material blocks 10 in parallel in a length direction,
    wherein the material layers 100 are formed by being stacked in parallel in the height direction and impregnating a resin therebetween.
  8. The girder 1000 of a wind turbine blade of claim 7, wherein depressed grooves 11-1 and 11-2 are formed on one surface in a length direction of the material block 10 and hooks 12-1 and 12-2 are formed on one surface in a length direction of another material block 10, and
    the material blocks 10 are connected to each other by inserting the hooks 12-1 and 12-2 of another material block 10 into the depressed grooves 11-1 and 11-2 of the material block 10.
  9. The girder 1000 of a wind turbine blade of claim 8, wherein the depressed groove 11-1 is formed at a center of the one surface in the length direction of the material block 10 and the hook 12-1 is formed at a center of the one surface in the length direction of another material block 10.
  10. The girder 1000 of a wind turbine blade of claim 8, wherein the depressed groove 11-2 is formed at one portion of the one surface in the length direction of the material block 10 and the hook 12-2 is formed at one portion of the one surface in the length direction of another material block 10.
  11. The girder 1000 of a wind turbine blade of claim 7, wherein the material layer 100 is stacked so that a connection line in the length direction and a connection line in the height direction of the material blocks 10 forming the material layer 100 deviate from each other.
  12. The girder 1000 of a wind turbine blade of claim 7, wherein the material sheet 1 is made of a composite material.
PCT/KR2014/007988 2013-09-04 2014-08-28 Girder of wind turbine blade and manufacturing method thereof WO2015034204A1 (en)

Applications Claiming Priority (2)

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KR20130106197A KR101391213B1 (en) 2013-09-04 2013-09-04 Producing method for girder of wind power turbine blade and girder of wind power turbine blade
KR10-2013-0106197 2013-09-04

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Citations (4)

* Cited by examiner, † Cited by third party
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
US20110084496A1 (en) * 2008-06-05 2011-04-14 Mitsubishi Heavy Industries, Ltd. Wind turbine blade and wind power generator using the same
US20110171038A1 (en) * 2009-12-25 2011-07-14 Mitsubishi Heavy Industries, Ltd. Wind turbine rotor blade and producing method of wind turbine rotor blade
WO2013084361A1 (en) * 2011-12-09 2013-06-13 三菱重工業株式会社 Wind turbine blade

Patent Citations (4)

* Cited by examiner, † Cited by third party
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
US20110084496A1 (en) * 2008-06-05 2011-04-14 Mitsubishi Heavy Industries, Ltd. Wind turbine blade and wind power generator using the same
US20110171038A1 (en) * 2009-12-25 2011-07-14 Mitsubishi Heavy Industries, Ltd. Wind turbine rotor blade and producing method of wind turbine rotor blade
WO2013084361A1 (en) * 2011-12-09 2013-06-13 三菱重工業株式会社 Wind turbine blade

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