WO2006106734A1 - 風車 - Google Patents
風車 Download PDFInfo
- Publication number
- WO2006106734A1 WO2006106734A1 PCT/JP2006/306473 JP2006306473W WO2006106734A1 WO 2006106734 A1 WO2006106734 A1 WO 2006106734A1 JP 2006306473 W JP2006306473 W JP 2006306473W WO 2006106734 A1 WO2006106734 A1 WO 2006106734A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wind turbine
- hub
- fitting structure
- windmill
- blade
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 28
- 238000003825 pressing Methods 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 7
- 239000011162 core material Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- 239000004620 low density foam Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
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- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
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- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
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- 239000002861 polymer material Substances 0.000 description 1
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- 239000011800 void material Substances 0.000 description 1
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
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
-
- 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
- F05B2230/601—Assembly methods using limited numbers of standard modules which can be adapted by machining
-
- 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
- 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
- F05B2260/00—Function
- F05B2260/30—Retaining components in desired mutual position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/04—Composite, e.g. fibre-reinforced
-
- 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
Definitions
- the present invention relates to a wind turbine, and more particularly to a connection structure between a hub of a wind turbine shaft and a blade root portion.
- a plurality of wind turbine blades are provided in a number of about three, and their roots are fixedly connected to the hub of the wind turbine shaft and rotated with the rotation of the wind turbine shaft.
- the simplest and most popular method is to fix the base of the blade to the knob by fastening with a through-bolt.
- the main body of the wings is made of fiber-reinforced plastic (hereinafter sometimes simply referred to as FRP), especially carbon fiber reinforced plastic (hereinafter simply referred to as CFRP).
- FRP fiber-reinforced plastic
- CFRP carbon fiber reinforced plastic
- the bolt fastening force is not limited by the vibration or centrifugal force generated by the rotation of the windmill. Cracks may occur in the blade starting from bolt holes where stress concentration occurs, and internal members may deteriorate due to water intrusion into the blade.
- the wing body when the wing body is provided with a bolt hole, in order to maintain the shape and strength of the bolt hole portion, it may be necessary to separately insert a solid member into the fastening portion.
- the increase in the weight of the wing is unavoidable, and the light weight effect as described above may be impaired.
- an increase in the weight of the wing leads to an increase in the inertia moment of the wing and an increase in the kinetic energy of the wing itself.As a result, the brake brake performance is improved, the motor capacity, the weight is increased, and the support arm is reinforced. This increases the cost of other parts. Power! In other words, an increase in the kinetic energy of a wing may lead to increased damage to the surroundings if the wing breaks or scatters.
- Patent Document 1 Japanese Patent Laid-Open No. 2000-120524
- an object of the present invention is to provide a connection structure between a wing and a hub that basically does not require a bolt fastening structure, and achieve a light weight of the wing.
- the object is to provide a wind turbine having a structure that can easily ensure the strength, rigidity and construction accuracy of the connecting portion.
- the wind turbine according to the present invention is characterized in that the hub and the blade root portion are connected by an undercut fitting structure in the radiation direction of the wind turbine shaft.
- This undercut fitting structure has, for example, a shape in which the blade root portion is narrowed toward the wind turbine shaft in the radial direction of the wind turbine shaft, and then the width is narrowed, while the width is narrowed on the nozzle side. Is formed with a notch or void where the blade root can be fitted, and by this fitting, the widened portion of the blade root can be locked toward the radial direction of the wind turbine shaft.
- the cross section having a cross-sectional area within the range of is located closer to the wind turbine shaft than the cross section having the minimum cross-sectional area.
- the gap between the hub and the blade root is preferably in the range of 0 to 0.5 mm.
- the undercut fitting structure portion is fixed to the positioning surface of the hub by a pressing means in the wind turbine axis direction. That is, the undercut fitting structure portion is fixed at a predetermined position in the windmill axis direction by contact between the positioning surface of the hub and the pressing means, and with respect to the radiation direction of the windmill axis, It is a structure fixed by an undercut fitting structure. In any direction, the blade root portion is fixed without requiring bolt fastening. At least one fixed surface of the positioning surface or the pressing means is formed on a surface perpendicular to the wind turbine axis. It is preferable.
- an undercut fitting structure is formed on each fixing surface of the positioning surface or the pressing means.
- the hub and blade root may be in contact with a plane or a surface with a radius of curvature of 5 to: LOOmm. preferable.
- a plurality of blade root portions may be connected to one hub.
- a plurality of blade roots are connected to a hub so as to be arranged at an equal angle on a circumference around the rotation axis of the wind turbine shaft.
- the blade main body part that constitutes a part of the blade root part is formed by using fiber reinforced plastic, such as a lightweight sheet. ⁇ .
- this fiber reinforced plastic also has a carbon fiber reinforced plastic strength in order to achieve an excellent weight reduction effect while maintaining the strength and rigidity of the wing.
- the apparent density of the blade body is preferably in the range of 0.2 to 1. Og / cm 3 .
- the undercut fitting structure formed at the wing root is covered with a metal frame material! be able to.
- a structure covered with a metal frame material is preferable.
- the metal frame material is preferably made of an aluminum frame material (including an aluminum alloy frame material) in consideration of weight reduction.
- the thickness of the adhesive layer between the wing body and the metal frame material constituting the undercut fitting structure portion is preferably in the range of 0.05 to 0.5 mm.
- the blade body portion and the metal frame member constituting the undercut fitting structure portion are connected by the undercut fitting structure. It is preferable.
- the metal frame material may be divided into a plurality of parts.
- the metal frame material may be divided into a plurality of parts at places other than the undercut fitting structure portion.
- the undercut fitting structure may be formed through contact between the hub and the metal frame member.
- the connecting portion of the blade root portion to the hub is provided with flexibility to restrain displacement of the blade relative to the hub when the fixing of the blade to the hub is released. It can be configured to have a strip.
- the tensile strength of the strip is preferably in the range of 1.5 to 5.
- OGPa and the tensile fracture strain is preferably in the range of 3 to 15%.
- the tensile stress generated in the strip is 1% or less of the tensile strength of the strip.
- the strip is flexed so that almost no tensile load is applied to the strip, or the flexibility is applied to the strip to allow the blade to have a margin. It is preferable to connect the strips and apply a tensile load to restrain the blades to the strips only when it is necessary to prevent the blades from scattering.
- connection structure to the blade root part of the strip.
- the above article A structure in which a part of the body is included in a part of the wing can be adopted. Further, a structure in which a part of the strip is bound to a part of the wing can also be adopted. In addition, it can be bonded together with an adhesive.
- the above-mentioned strip body has a tensile strength that can prevent the wings from scattering, and a flexibility that can adopt a connection structure with the wings that hardly exerts a force on the strip during normal operation. If it is, it will not be specifically limited.
- a preferable material for the strip include those containing at least one of glass fiber, aramid fiber, and steel wire.
- one strip can be restrained by using one strip for each blade. It is also possible to adopt a structure in which the displacement of a plurality of wings is restrained using a strip.
- the type of the wind turbine according to the present invention is not particularly limited, but the present invention is particularly suitable for a horizontal axis type wind turbine in which the wind turbine shaft extends in the horizontal direction.
- the blade on which the centrifugal force acts in the radial direction of the windmill axis by rotation, is connected to the hub at the base portion by an undercut fitting structure.
- the undercut fitting structure portion can be easily fixed in a predetermined position by fixing the undercut fitting structure portion in the windmill axis direction to the positioning surface of the hub with a pressing means. Therefore, the blade root portion basically does not require any conventional bolt fastening structure and does not require a bolt hole.
- connection and fixing of the blade and the hub can be achieved without using a bolt fastening structure directly on the blade body.
- the problem of cracking can be solved, construction can be facilitated and accuracy can be improved.
- Shika also eliminates the need for bolt holes and simplifies the shape of the blades and knobs for easy manufacturing. Can help reduce costs and costs.
- the wing body is made of FRP, the strength, rigidity, and construction accuracy of the connecting part with the hub can be easily secured by the undercut fitting structure while reducing the weight of the wing. .
- the bolt holes in the FRP blade body can be made unnecessary, water can easily be prevented from entering the blade, and the weather resistance can be improved.
- the shape is simple, the wing Molding also becomes easy.
- the wing body in the case of FRP wings, can be made hollow, or a structure with an extremely lightweight core material can be used. become.
- FIG. 1 is a plan view of a blade portion of a wind turbine according to an embodiment of the present invention.
- FIG. 2 is an enlarged plan view of a connecting portion between a blade root portion and a hub of the wind turbine shown in FIG.
- FIG. 3 is a cross-sectional view of the undercut fitting structure portion formed at the blade root portion along the line AA in FIG. 2.
- FIG. 4 is a cross-sectional view of an undercut fitting structure portion showing a structural example different from FIG.
- FIG. 5 is a partial cross-sectional view of an undercut fitting structure portion taken along line BB in FIG.
- FIG. 6 is a partial cross-sectional view of an undercut fitting structure portion showing a structural example different from FIG.
- FIG. 7 is a partial cross-sectional view of an undercut fitting structure portion showing still another structural example different from FIG.
- FIG. 8 is a partial cross-sectional view showing an example of the structure of the undercut fitting structure along the line A—A or C—C in FIG.
- FIG. 9 is an enlarged partial plan view showing an example when a strip is added to the wind turbine of FIG. 1.
- FIG. 10 is an enlarged partial plan view showing another example of a structure for adding a strip to the wind turbine of FIG. 1.
- FIG. 1 and FIG. 2 show a wind turbine according to an embodiment of the present invention, and in particular, an example in which the blade main body portion is constituted by FRP.
- the FRP used in the wind turbine blade according to the present invention is not particularly limited.
- the reinforcing fiber include inorganic fibers such as carbon fiber and glass fiber, and organic fibers such as Kepler fiber, polyethylene fiber, and polyamide fiber. Reinforcing fibers made of fibers are listed. Carbon fiber is particularly preferable from the viewpoint of controllability of blade strength and rigidity.
- matrix resins for FRP include thermosetting resins such as epoxy resins, unsaturated polyester resins, vinyl ester resins, phenol resins, and polyamide resins, polyolefin resins.
- Thermoplastic resins such as fat, dicyclopentadiene resin and polyurethane resin can also be used.
- the structure of the FRP blade body part is a structure in which only the outer shell structure (surface material only) is made of FRP and the interior is hollow, and a lightweight core material is interposed or filled inside the FRP outer shell. Any so-called sandwich structure can be used.
- the core material it is possible to use an elastic body, a foam material, or a hard cam material, and a foam material is particularly preferable for light weight.
- FIG. 1 is a plan view of a blade portion of a horizontal axis type wind turbine.
- the windmill 1 includes a windmill shaft 2 as a rotation shaft, and a hub 3 that rotates integrally with the windmill shaft 2 is provided around the windmill shaft 2.
- three blades 4 are connected to the hub 3 at the root portion thereof.
- the main body 4a of each blade 4 is made of FRP, especially CFRP, and the hub 3 and blade root are connected to the radial direction of the wind turbine shaft 2 by an undercut fitting structure! RU
- the undercut fitting structure portion 5 is formed on the undercut fitting structure portion 6 formed on the blade root portion and the undercut fitting structure portion 6 formed on the hub 3 side. Thus, it is constituted by a fitting hole portion 7 for locking the undercut fitting structure portion 6 with respect to the radiation outer direction of the wind turbine shaft 2. More specifically, as shown in FIG. 2, the undercut fitting structure portion 6 formed at the blade root portion is reduced in width as viewed from the plane as it approaches the wind turbine shaft 2, and then the width is reduced. Is formed in an enlarged shape so that the fitting hole 7 can fit the undercut fitting structure 6 with a slight clearance (preferably a gap within a range of 0 to 0.5 mm). It is formed in a planar shape along the planar shape of this undercut fitting structure 6! Speak.
- the undercut fitting structure portion 6 formed at the blade root portion is covered with a frame member 8 made of metal, particularly aluminum.
- the structure of the AA cross section in FIG. 2 is configured as shown in FIG. 3 and FIG. 4, for example.
- the cross-sectional force having a cross-sectional area within the range of 1.1 to 2.0 times the minimum cross-sectional area It is preferable that the wind turbine shaft is disposed on the side of the cross section having the cross sectional area.
- the wing body consists of a CFRP surface material 9 and an acrylic low-density foam 10 placed inside as a core material, and the CFRP wing body force aluminum Covered with frame material 8
- the aluminum frame material 8 consists of two members 8a and 8b.
- the wing body is made of aluminum-rum frame material 8 with two members 8c, 8d formed in a bowl shape and the tips are overlapped with each other. Cover the blade body and contact the surface material 9 with an adhesive.
- the structure of the BB cross section in FIG. 2 is configured, for example, as shown in FIGS.
- one surface 7a of the fitting hole 7 of the hub 3 is formed on the positioning surface, and the positioning surface 7a is formed on the blade root portion by a pressing plate 11 as a pressing means.
- the undercut fitting structure 6 is positioned and fixed in the windmill axis direction.
- both the positioning surface 7a of the fitting hole 7 and the pressing surface 11a of the pressing plate 11 are formed in a plane perpendicular to the wind turbine axis, and the blade is easily placed at a predetermined axial position. 4 can be positioned and fixed, and the three wings 4 can be fixed at the same time with one holding plate 11.
- the undercut fitting structure portion 12 formed in the blade root portion and the fitting hole portion 13 of the hub 3 are connected to the undercut fitting structure in the plane direction shown in FIG.
- an undercut fitting structure is adopted so that the locking function can be exerted in the direction of the wind turbine shaft in the radial direction of the wind turbine shaft. That is, the thickness force of the undercut fitting structure 12 formed at the blade root portion is formed so as to become smaller and then expand as it approaches the wind turbine shaft, and the fitting hole portion 13 extends in the wind turbine axis direction.
- the depth is also set to a shape corresponding to the shape in the thickness direction of the undercut fitting structure portion 12.
- the convex surface 12a of the undercut fitting structure portion 12 in the windmill axis direction is locked to the concave surface 13a of the fitting hole portion 13.
- the pressing surface 11a of the pressing plate 11 is a force formed on a surface perpendicular to the wind turbine axis. Even in this structure, the three pressing blades 11 can fix the three blades 4 simultaneously. Compared to the structure shown in FIG. 5, the force that locks and connects (restrains) blade 4 to hub 3 is greater than the centrifugal force applied to blade 4.
- the undercut fitting structure portion 14 formed in the blade root portion and the fitting hole portion 15 of the hub 3 have the undercut fitting structure in the plane direction shown in FIG.
- a saddle type undercut fitting structure is adopted so that the locking function can be exerted with respect to the radial direction of the windmill axis.
- a hook-shaped locking portion 14a is provided on one side of the insertion tip of the undercut fitting structure portion 14 formed at the blade root portion, and is formed at the inner back of the fitting hole portion 15.
- a bowl-shaped recess 15a is formed.
- a marginal space 16 for inserting the hook-shaped locking portion 14a into the hook-shaped recess 15a is formed at the innermost portion of the hook-shaped recess 15a to prevent backlash after insertion.
- an insert member 17 is inserted into the margin space 16. After inserting the insert member 17, the wing 4 may be fixed by the holding plate 11. Even in this case, the three wings 4 can be fixed simultaneously by the single pressing plate 11.
- the outer diameter shape of the undercut fitting structure portion as shown in FIG. 3 or FIG. 4 can be adopted.
- a tapered outer shape (taper fitting structure) as shown in FIG. 8 can also be adopted.
- the side surface 19a of the fitting hole portion 19 of the hub 18 is formed in a tapered surface, and the side surface 20a of the undercut fitting structure portion 20 formed in the blade root portion corresponds thereto. It is formed on a tapered surface.
- the conventional bolt fastening structure is not required to connect the blade root to the hub, eliminating the problems of fatigue and cracking associated with bolt fastening and facilitating construction and improving accuracy. Can be achieved.
- By eliminating the need for bolt holes it is possible to simplify the shape of the blade blade and the hub part, simplify manufacturing, reduce costs, and easily prevent water from entering the blade. The weather resistance can be improved.
- the wing body part made of FRP, especially CFRP, it is possible to easily ensure the strength, rigidity and construction accuracy of the connecting part with the hub while reducing the weight of the wing.
- a strip 31 is provided around the wind turbine shaft 2 through a spacer (not shown) in some cases, and the strip 31 is then attached to the root portion of each blade 4. Adopting a structure linked to wear.
- a strip 32 is stretched around the wind turbine shaft 2 at a position away from the wind turbine shaft 2, and the blade 32 is included in the root portion of each blade 4 so that each blade 4 It is also possible to adopt a structure that is connected to the root portion of the. In any case, basically, in the strips 31 and 32, during normal operation (normal blade rotation), the binding force of the blade 4 is not substantially applied. When the fixing of the wing 4 is released due to fatigue breakage of the connecting part, etc., the V Thus, the wing 4 is restrained to prevent the wing from scattering.
- the tensile strength of the strips 31 and 32 is in the range of 1.5 to 5. OGPa, and the tensile breaking strain is in the range of 3 to 15%. It is preferable. Further, it is preferable that the tensile stress generated in the strips 31 and 32 during the rated operation of the wind turbine is 1% or less of the tensile strength of the strips. Furthermore, examples of preferable materials for the strips 31 and 32 include those containing at least one of glass fiber, aramid fiber, and steel wire.
- the present invention is suitable for all types of wind turbines, particularly for small wind turbines, wind turbines with blades made of FRP, and horizontal axis wind turbines.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800107695A CN101151457B (zh) | 2005-03-30 | 2006-03-29 | 风车 |
EP06730421.2A EP1876351B1 (en) | 2005-03-30 | 2006-03-29 | Windmill |
DK06730421.2T DK1876351T3 (en) | 2005-03-30 | 2006-03-29 | Windmill |
US11/910,137 US20080273981A1 (en) | 2005-03-30 | 2006-03-29 | Windmill |
JP2007512794A JP5016482B2 (ja) | 2005-03-30 | 2006-03-29 | 風車 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-098138 | 2005-03-30 | ||
JP2005098138 | 2005-03-30 |
Publications (1)
Publication Number | Publication Date |
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WO2006106734A1 true WO2006106734A1 (ja) | 2006-10-12 |
Family
ID=37073297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/306473 WO2006106734A1 (ja) | 2005-03-30 | 2006-03-29 | 風車 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080273981A1 (ja) |
EP (1) | EP1876351B1 (ja) |
JP (1) | JP5016482B2 (ja) |
CN (1) | CN101151457B (ja) |
DK (1) | DK1876351T3 (ja) |
WO (1) | WO2006106734A1 (ja) |
Cited By (4)
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JP2014507599A (ja) * | 2011-03-10 | 2014-03-27 | フォイト・パテント・ゲーエムベーハー | 軸流タービンのためのロータ配列 |
WO2014192297A1 (ja) * | 2013-05-28 | 2014-12-04 | テラル株式会社 | ロータ |
JP6002865B1 (ja) * | 2015-09-03 | 2016-10-05 | 積水化成品工業株式会社 | 風車用ブレード |
JP2018168789A (ja) * | 2017-03-30 | 2018-11-01 | 積水化成品工業株式会社 | 風車用ブレード |
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US8657581B2 (en) | 2009-08-28 | 2014-02-25 | Gordon Holdings, Inc. | Thermoplastic rotor blade |
WO2012009482A2 (en) * | 2010-07-13 | 2012-01-19 | Nature's Energy Banc | Connection mechanism for mounting blades for a wind turbine |
CN102011713A (zh) * | 2010-07-22 | 2011-04-13 | 北京可汗之风科技有限公司 | 一种风力发电机叶片的芯材设计 |
CN102195423B (zh) * | 2011-05-20 | 2012-11-21 | 国电联合动力技术有限公司 | 一种固定轴支撑的双定子永磁直驱风力发电机 |
JP6490421B2 (ja) | 2014-12-25 | 2019-03-27 | テラル株式会社 | ロータ |
US10443608B2 (en) | 2015-03-30 | 2019-10-15 | Mitsubishi Electric Corporation | Impeller |
US10060411B2 (en) * | 2015-07-22 | 2018-08-28 | General Electric Company | Rotor blade root assembly for a wind turbine |
JP6554437B2 (ja) * | 2015-09-03 | 2019-07-31 | 積水化成品工業株式会社 | ロボットアーム |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5360405A (en) * | 1976-11-12 | 1978-05-31 | Toshiba Corp | Turbine blade |
JPS5731579U (ja) * | 1980-07-30 | 1982-02-19 | ||
JPS6350463Y2 (ja) * | 1982-08-25 | 1988-12-26 | ||
JPH0614495U (ja) * | 1992-07-30 | 1994-02-25 | 三菱重工業株式会社 | 動 翼 |
JPH0635279B2 (ja) * | 1984-12-08 | 1994-05-11 | ロ−ルス・ロイス・ピ−エルシ− | ロ−タ−翼 |
JP2000352398A (ja) * | 1999-06-09 | 2000-12-19 | Sumitomo Precision Prod Co Ltd | 複合材製回転翼のシャンク部構造 |
JP2002201909A (ja) * | 2000-12-28 | 2002-07-19 | Ishikawajima Harima Heavy Ind Co Ltd | ブレード保持構造 |
JP2004245174A (ja) * | 2003-02-17 | 2004-09-02 | Kochi Prefecture | 風力発電装置用ブレード |
JP2004316466A (ja) * | 2003-04-11 | 2004-11-11 | Sekisui Chem Co Ltd | 風力発電用ブレード |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US292057A (en) * | 1884-01-15 | Wind-wheel | ||
US1175460A (en) * | 1911-08-18 | 1916-03-14 | Expl Des Procedes Westinghouse Leblanc Sa | Wheel with elastic nave for steam or gas turbines and turbo-compressors. |
US1527097A (en) * | 1923-11-05 | 1925-02-17 | Watson Claude | Reversible windmill |
US1819728A (en) * | 1930-09-12 | 1931-08-18 | Homer G Baugh | Multiple blade propeller |
US2118201A (en) * | 1936-01-14 | 1938-05-24 | Harry C Hood | Self-governing windmill |
US3132841A (en) * | 1958-05-12 | 1964-05-12 | Gen Motors Corp | Compressor blade and manufacture thereof |
US3572969A (en) * | 1969-05-13 | 1971-03-30 | Gen Motors Corp | Turbomachine rotor |
US4349318A (en) * | 1980-01-04 | 1982-09-14 | Avco Corporation | Boltless blade retainer for a turbine wheel |
US4389161A (en) * | 1980-12-19 | 1983-06-21 | United Technologies Corporation | Locking of rotor blades on a rotor disk |
JPS57168005A (en) * | 1981-04-10 | 1982-10-16 | Hitachi Ltd | Rotor structue for axial machines |
US4669164A (en) * | 1986-01-27 | 1987-06-02 | Phelps William D | Method and apparatus for the manufacture of variable dimension fans |
US5476366A (en) * | 1994-09-20 | 1995-12-19 | Baldor Electric Co. | Fan construction and method of assembly |
US5573377A (en) * | 1995-04-21 | 1996-11-12 | General Electric Company | Assembly of a composite blade root and a rotor |
US6102664A (en) * | 1995-12-14 | 2000-08-15 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Blading system and method for controlling structural vibrations |
FR2746456B1 (fr) * | 1996-03-21 | 1998-04-30 | Snecma | Dispositif de retenue du pied des aubes d'une soufflante |
US5836800A (en) * | 1997-04-03 | 1998-11-17 | Liu; Chin-Hsiang | Pinwheel |
US5935360A (en) * | 1997-09-24 | 1999-08-10 | General Electric Company | Method for repairing a strip bonded to an article surface |
US6004101A (en) * | 1998-08-17 | 1999-12-21 | General Electric Company | Reinforced aluminum fan blade |
DE19903550C1 (de) * | 1999-01-29 | 2000-05-25 | Muehlbauer Luftfahrttechn Gmbh | Blattwurzel für Propeller- und Rotorblätter |
AU2002354986B2 (en) * | 2001-07-19 | 2006-11-30 | Vestas Wind Systems A/S | Wind turbine blade |
US6619924B2 (en) * | 2001-09-13 | 2003-09-16 | General Electric Company | Method and system for replacing a compressor blade |
FR2831207B1 (fr) * | 2001-10-24 | 2004-06-04 | Snecma Moteurs | Plates-formes pour aubes d'un ensemble rotatif |
US6940185B2 (en) * | 2003-04-10 | 2005-09-06 | Advantek Llc | Advanced aerodynamic control system for a high output wind turbine |
GB0424481D0 (en) * | 2004-11-05 | 2004-12-08 | Rolls Royce Plc | Composite aerofoil |
FR2881174B1 (fr) * | 2005-01-27 | 2010-08-20 | Snecma Moteurs | Dispositif de positionnement d'une aube et disque aubage comportant un tel dispositif |
-
2006
- 2006-03-29 CN CN2006800107695A patent/CN101151457B/zh not_active Expired - Fee Related
- 2006-03-29 JP JP2007512794A patent/JP5016482B2/ja active Active
- 2006-03-29 US US11/910,137 patent/US20080273981A1/en not_active Abandoned
- 2006-03-29 DK DK06730421.2T patent/DK1876351T3/en active
- 2006-03-29 WO PCT/JP2006/306473 patent/WO2006106734A1/ja active Application Filing
- 2006-03-29 EP EP06730421.2A patent/EP1876351B1/en not_active Not-in-force
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5360405A (en) * | 1976-11-12 | 1978-05-31 | Toshiba Corp | Turbine blade |
JPS5731579U (ja) * | 1980-07-30 | 1982-02-19 | ||
JPS6350463Y2 (ja) * | 1982-08-25 | 1988-12-26 | ||
JPH0635279B2 (ja) * | 1984-12-08 | 1994-05-11 | ロ−ルス・ロイス・ピ−エルシ− | ロ−タ−翼 |
JPH0614495U (ja) * | 1992-07-30 | 1994-02-25 | 三菱重工業株式会社 | 動 翼 |
JP2000352398A (ja) * | 1999-06-09 | 2000-12-19 | Sumitomo Precision Prod Co Ltd | 複合材製回転翼のシャンク部構造 |
JP2002201909A (ja) * | 2000-12-28 | 2002-07-19 | Ishikawajima Harima Heavy Ind Co Ltd | ブレード保持構造 |
JP2004245174A (ja) * | 2003-02-17 | 2004-09-02 | Kochi Prefecture | 風力発電装置用ブレード |
JP2004316466A (ja) * | 2003-04-11 | 2004-11-11 | Sekisui Chem Co Ltd | 風力発電用ブレード |
Non-Patent Citations (1)
Title |
---|
See also references of EP1876351A4 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014507599A (ja) * | 2011-03-10 | 2014-03-27 | フォイト・パテント・ゲーエムベーハー | 軸流タービンのためのロータ配列 |
WO2014192297A1 (ja) * | 2013-05-28 | 2014-12-04 | テラル株式会社 | ロータ |
JP2014231759A (ja) * | 2013-05-28 | 2014-12-11 | テラル株式会社 | ロータ |
US9938957B2 (en) | 2013-05-28 | 2018-04-10 | Teral Inc. | Rotor |
JP6002865B1 (ja) * | 2015-09-03 | 2016-10-05 | 積水化成品工業株式会社 | 風車用ブレード |
WO2017037930A1 (ja) * | 2015-09-03 | 2017-03-09 | 積水化成品工業株式会社 | 風車用ブレード |
KR101878158B1 (ko) * | 2015-09-03 | 2018-07-13 | 세키스이가세이힝코교가부시키가이샤 | 풍차용 블레이드 |
JP2018168789A (ja) * | 2017-03-30 | 2018-11-01 | 積水化成品工業株式会社 | 風車用ブレード |
Also Published As
Publication number | Publication date |
---|---|
US20080273981A1 (en) | 2008-11-06 |
JP5016482B2 (ja) | 2012-09-05 |
CN101151457B (zh) | 2013-01-16 |
EP1876351B1 (en) | 2017-07-19 |
JPWO2006106734A1 (ja) | 2008-09-11 |
EP1876351A4 (en) | 2012-11-28 |
EP1876351A1 (en) | 2008-01-09 |
DK1876351T3 (en) | 2017-10-23 |
CN101151457A (zh) | 2008-03-26 |
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