WO2022114102A1 - 風車翼用のボルテックスジェネレータ、風車翼及び風力発電装置並びに風車翼の製造方法 - Google Patents
風車翼用のボルテックスジェネレータ、風車翼及び風力発電装置並びに風車翼の製造方法 Download PDFInfo
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- WO2022114102A1 WO2022114102A1 PCT/JP2021/043327 JP2021043327W WO2022114102A1 WO 2022114102 A1 WO2022114102 A1 WO 2022114102A1 JP 2021043327 W JP2021043327 W JP 2021043327W WO 2022114102 A1 WO2022114102 A1 WO 2022114102A1
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- Prior art keywords
- fin
- vortex generator
- platform
- wind turbine
- cavity
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- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000010248 power generation Methods 0.000 title description 7
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- 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
- F03D1/06495—Aerodynamic elements attached to or formed with the blade, e.g. flaps, vortex generators or noise reducers
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
-
- 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
- F05B2230/20—Manufacture essentially without removing material
- F05B2230/23—Manufacture essentially without removing material by permanently joining parts together
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/306—Surface measures
- F05B2240/3062—Vortex generators
-
- 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
- F05B2250/00—Geometry
- F05B2250/30—Arrangement of components
- F05B2250/33—Arrangement of components symmetrical
-
- 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
Definitions
- the present disclosure relates to a vortex generator for a wind turbine wing, a wind turbine wing and a wind power generator, and a method for manufacturing the wind turbine wing.
- Patent Documents 1 to 8 disclose a vortex generator having a platform attached to the surface of a wind turbine blade and fins erected on the platform.
- the vortex generator tends to become larger as the wind turbine blades become larger, and the thickness of the fins tends to become thicker. Therefore, in the cooling process when molding the vortex generator, shrinkage occurs due to shrinkage, and distortion and dents are likely to occur. In this case, a vortex generator having the shape as designed cannot be obtained, and when this vortex generator is installed on a wind turbine blade, the expected functions and performance may not be obtained.
- At least one embodiment of the present invention provides a vortex generator for a wind turbine blade, a wind turbine blade and a wind power generator, and a method for manufacturing the wind turbine blade, in which a vortex generator having a shape as designed can be easily obtained. With the goal.
- the vortex generator for a wind turbine wing is Platform and With at least one fin projecting from the top surface of the platform, A resin vortex generator for wind turbine wings equipped with The vortex generator is composed of a cavity that opens to the bottom surface of the platform and extends to the inside of the fin.
- the wind turbine blade according to at least one embodiment of the present invention is With the wing body, With the above-mentioned vortex generator attached to the surface of the wing body, To prepare for.
- the wind power generation device is With the wind turbine rotor including the above-mentioned wind turbine blades, A generator configured to be driven by the wind turbine rotor, To prepare for.
- the method for manufacturing a wind turbine blade is as follows.
- a method for manufacturing a wind turbine wing comprising the wing body and the above-mentioned vortex generator provided in the fin and having a hole communicating with the cavity and opening on the surface of the fin.
- the step of adhering the vortex generator to the surface of the wing body A step of sucking air inside the cavity through the hole, To prepare for.
- a vortex generator for a wind turbine blade for a wind turbine blade, a wind turbine blade and a wind power generator, and a method for manufacturing the wind turbine blade, which makes it easy to obtain a vortex generator having a shape as designed.
- FIG. 1 It is a schematic block diagram of the wind power generation apparatus which concerns on one Embodiment. It is a perspective view of the wind turbine wing which concerns on one Embodiment. It is a perspective view of the vortex generator which concerns on one Embodiment. It is a top view of the vortex generator shown in FIG. It is a top view of the vortex generator which concerns on one Embodiment. It is a figure which shows the AA cross section of FIG. It is a figure which shows the BB cross section of FIG. It is a figure which shows the CC cross section of FIG. It is a figure which shows an example of the DD cross section of FIG. It is a figure which shows an example of the DD cross section of FIG.
- FIG. 1 is a schematic configuration diagram of a wind power generation device according to an embodiment
- FIG. 2 is a perspective view of a wind turbine blade according to an embodiment.
- the wind turbine generator 40 includes a rotor 42 composed of at least one (for example, three) wind turbine blades 1 and a hub 43.
- the wind turbine blade 1 is radially attached to the hub 43, and the rotor 42 rotates when the wind turbine blade 1 receives wind, and a generator (not shown) connected to the rotor 42 generates electricity.
- the rotor 42 is supported by a nacelle 44 provided above the tower 46.
- the tower 46 is erected on a base structure 48 (foundation structure, floating structure, etc.) provided on the water or on land.
- the vortex generator according to the embodiment is attached to the wind turbine blade 1 of the wind power generation device 40.
- the wind turbine blade 1 includes a blade body 2 and a vortex generator 10 attached to the surface (blade surface) of the blade body 2.
- the wing body 2 has a wing root 3 attached to the hub 43 of the wind power generator 40, a wing tip 4 located farthest from the hub 43, and an airfoil portion 5 extending between the wing root 3 and the wing tip 4. And, including.
- the wind turbine wing 1 has a leading edge 6 and a trailing edge 7 from the wing root 3 to the wing tip 4.
- the outer shape of the wind turbine blade 1 is formed by a pressure surface (ventral surface) 8 and a negative pressure surface (back surface) 9 facing the pressure surface 8.
- a plurality of vortex generators 10 are attached to the negative pressure surface 9 of the blade body 2. Further, a plurality of vortex generators 10 are arranged in a plurality of blade length directions on the negative pressure surface 9 of the blade body 2.
- the "wingpan direction” is the direction connecting the wing root 3 and the wing tip 4.
- FIG. 3 is a perspective view of the vortex generator 10 according to the embodiment
- FIGS. 4 to 5 are plan views of the vortex generator according to the embodiment, respectively.
- FIG. 4 is a plan view of the vortex generator 10 shown in FIG. 6 to 9 are cross-sectional views of the vortex generator 10 according to the embodiment, respectively.
- 6 is a diagram showing a cross section taken along the line AA of FIG. 4
- FIG. 7 is a diagram showing a cross section taken along the line BB of FIG. 4
- FIG. 8 is a diagram showing a cross section taken along the line CC of FIG. 9 and 10 are views showing a DD cross section of FIG. 9 and 10 are views showing the vortex generator according to the embodiment together with the wind turbine blade to which the vortex generator is attached.
- the vortex generator 10 has a platform 11 mounted on the surface of the wind turbine blade 1 (more specifically, the surface of the blade body 2) and at least one fin 12 provided on the platform 11. And prepare.
- the platform 11 has an upper surface 11a on which fins 12 are provided, and a bottom surface 11b on the opposite side of the upper surface 11a.
- the vortex generator 10 is attached to the surface of the blade body 2 (for example, the negative pressure surface 9) via the bottom surface 11b.
- the shape of the platform 11 is not particularly limited, but in some embodiments, it may have a circular shape in a plan view as shown in FIGS. 3 to 5. In some embodiments, the platform 11 may have a shape such as a polygon or an ellipse in plan view. Further, the upper surface 11a of the platform 11 may have a curved surface shape or a planar shape. The upper surface 11a of the platform 11 shown in FIGS.
- the bottom surface 11b of the platform 11 is basically a planar shape, but it does not have to be a perfect planar shape, and may be, for example, a concave curved surface shape having a relatively large curvature.
- At least one fin 12 is provided so as to project from the upper surface 11a of the platform 11.
- two fins 12A and 12B are provided on the platform 11.
- the fins 12A and 12B are collectively referred to as fins 12.
- the fins 12 have a front edge 13 located on the upstream side in the wind inflow direction, a trailing edge 14 located on the downstream side in the wind inflow direction, and an upstream in the wind inflow direction. It has a pressure surface (ventral surface) 15 of the fin 12 facing side, and a negative pressure surface (back surface) 16 of the fin 12 facing the downstream side in the inflow direction of wind.
- the direction of the straight line ( LCA and LCB in FIGS. 4 and 5) connecting the leading edge 13 and the trailing edge 14 is the chord direction of the fin 12.
- the fin 12 extends between the base 17 and the top 18 connected to the platform 11 in the height direction of the fin 12.
- the height direction of the fin 12 is a direction orthogonal to the bottom surface 11b of the platform 11.
- the height direction of the fins 12 is orthogonal to the plane including the edge of the bottom surface 11b of the platform 11.
- the height direction of the fin 12 may be simply referred to as the height direction.
- the height from the bottom surface 11b of the platform 11 means the height from the plane including the edge of the bottom surface 11b of the platform 11 when the bottom surface 11b of the platform is not a planar shape.
- the operation of the vortex generator 10 will be briefly described.
- the boundary layer gradually thickens from the laminar flow area near the leading edge 6 toward the turbulent flow area on the downstream side thereof, and the flow is separated before reaching the trailing edge 7. It happens by putting it away.
- the vortex generator 10 attached to the wind turbine blade 1 forms a vertical vortex on the negative pressure surface 16 side of the fin 12 by the lift generated by the fin 12. Further, the flow flowing into the fin 12 forms a vertical vortex along the edge from the most upstream side position 13a of the leading edge 13 of the fin 12 toward the top 13b.
- the vertical vortex generated by the fins 12 thus promotes momentum exchange in the height direction of the fins 12 inside and outside the boundary layer on one surface of the wind turbine blade on the wake side of the vortex generator 10.
- the boundary phase on the surface of the wind turbine blade 1 becomes thin, and the separation of the flow from the surface of the wind turbine blade 1 is suppressed.
- a leading edge portion 13' having a curved contour within a cross section orthogonal to the height direction of the fin 12 is included.
- the leading edge portion 13'of the fin 12 has a curved contour in a cross section orthogonal to the height direction, when the vortex generator 10 is installed on the wind turbine blade 1, the vortex generator is generated.
- the resistance to the flow of air flowing into the 10 can be reduced, and the performance of the vortex generator 10 can be easily exhibited.
- the cross-sectional shape of the fins 12 orthogonal to the height direction of the fins 12 may have an airfoil profile.
- the cross-sectional shape of the fin 12 since the cross-sectional shape of the fin 12 has an airfoil shape, it is possible to effectively suppress the separation of the flow from the surface of the wind turbine blade 1.
- the fin 12 has a shape symmetrical with respect to the code of the fin 12.
- the fin 12 since the fin 12 has a shape symmetrical with respect to the cord of the fin 12, it is molded by, for example, injection molding, as compared with the case where the fin 12 has a shape asymmetrical with respect to the cord. Will be easier.
- the fin 12 includes a leading edge having a curved contour in a cross section orthogonal to the height direction of the fin, and is a wing symmetrical with respect to the code of the fin 12. It has a mold shape (that is, in a cross section orthogonal to the height direction of the fin 12, the pressure surface 15 and the negative pressure surface 16 have a shape symmetrical with respect to the code of the fin 12). Also, in the exemplary embodiment shown in FIG. 5, the fin 12 includes a leading edge having a curved contour in a cross section orthogonal to the height direction of the fin and is an asymmetric wing with respect to the cord of the fin 12. It has a mold shape (ie, in a cross section orthogonal to the height direction of the fin 12, the pressure plane 15 and the negative pressure plane 16 have an asymmetric shape with respect to the cord of the fin 12).
- the fins 12 are provided so as to be inclined so as to form a predetermined angle with respect to the wind inflow direction. In some embodiments, as shown in FIGS. 3-5, from the upstream side to the downstream side in the wind inflow direction (that is, from the leading edge 6 side to the trailing edge 7 side of the wind turbine blade 1 (see FIG. 2)).
- the fins 12A and 12B may be provided so as to widen the gap between the pair of fins 12A and 12B.
- a pair of fins 12A from the downstream side to the upstream side in the wind inflow direction (ie, from the trailing edge 7 side to the leading edge 6 side of the wind turbine blade 1 (see FIG. 2)).
- the fins 12A and 12B may be provided so as to widen the gap between the 12Bs.
- the mounting angle (cord direction) of the fins 12 is 12 degrees or more and 18 degrees or less with respect to the inflow direction of the wind.
- the vortex generator 10 (platform 11 and fins 12) is made of resin.
- the resin used as the material of the vortex generator 10 may be, for example, a thermoplastic such as ASA (acrylate styleylene acrylonitrile) or AES (acrylonitrile ethylene style).
- the vortex generator 10 includes the cavity 20.
- the cavity 20 is a cavity that opens to the bottom surface 11b of the platform 11 and extends to the inside of the fin 12. That is, the cavity 20 extends, at least in part, above the top surface 11a of the platform 11 in the height direction of the fins 12.
- the vortex generator 10 since the vortex generator 10 is provided with the cavity portion 20 extending to the inside of the fin 12, the wall thickness of the fin 12 can be reduced with respect to the wall thickness of the platform 11 as compared with the case where the cavity portion 20 is not provided. .. That is, according to the above-described embodiment, it becomes easy to suppress sink marks due to shrinkage in the cooling process when the vortex generator 10 is molded from the resin material. Therefore, it becomes easy to obtain the vortex generator 10 having the shape as designed.
- the vortex generator 10 when the vortex generator 10 is installed on the wind turbine blade 1, it is expected that the vortex generator 10 will be stably adhered to the surface of the blade body 2 or that the vortex generator 10 will have an effect of suppressing the flow from the surface of the wind turbine blade 1. It becomes easy to obtain as shown in.
- the method for manufacturing the vortex generator 10 is not particularly limited, but the vortex generator 10 may be manufactured by injection molding, for example.
- the method for forming the cavity 20 is not particularly limited, but the cavity 20 may be formed by using a core at the time of injection molding or the like.
- the cavity 20 is of the platform 11 when the distance between the bottom surface 11b of the platform 11 and the top 18 of the fin 12 in the height direction of the fin 12 is HF (see FIG. 6 or 7).
- the maximum value HVmax (see FIG. 6 or FIG. 7) of the height HV of the cavity 20 from the bottom surface 11b is HF / 3 or more.
- the height HV of the cavity 20 is the distance in the height direction from the bottom surface 11b of the platform 11 to the surface 21 forming the cavity 20.
- the height HV of the cavity 20 at the position of the rib 22 (see FIGS. 6 to 8) described later is formed by a smooth surface 21 in which the rib 22 is virtually removed from the vortex generator 10 and the cavity 20 is continuous. It is defined as the height of the cavity 20 (the distance in the height direction from the bottom surface 11b of the platform 11 to the surface 21 forming the cavity 20) when it is assumed that the cavity 20 is formed.
- the maximum value HVmax of the height of the cavity 20 from the bottom surface 11b is HF / 3 or more, the area occupied by the cavity 20 in the fin 12 can be relatively large. Therefore, it becomes easy to reduce the wall thickness of the fin 12 with respect to the wall thickness of the platform 11. Therefore, it is possible to effectively suppress sink marks due to shrinkage in the cooling process when molding the vortex generator 10, and it becomes easier to obtain the vortex generator 10 having the shape as designed.
- the maximum height HVmax of the cavity 20 may be HF / 2 or more. In this case, it becomes easier to make the wall thickness of the fin 12 thinner than the wall thickness of the platform 11. Therefore, it is possible to effectively suppress sink marks due to shrinkage in the cooling process when molding the vortex generator 10, and it becomes easier to obtain the vortex generator 10 having the shape as designed.
- the height of the cavity 20 from the bottom surface 11b at the maximum blade thickness position P0 of the fin 12 in the cord direction of the fin 12 is set to be equal to or larger than the maximum thickness TB 2 of the platform 11, so that the fin 12 is used.
- the area occupied by the cavity 20 in the above can be made relatively large. Therefore, it becomes easy to reduce the wall thickness of the fin 12 with respect to the wall thickness of the platform 11. Therefore, it is possible to effectively suppress sink marks due to shrinkage in the cooling process when molding the vortex generator 10, and it becomes easier to obtain the vortex generator 10 having the shape as designed.
- the height HV from the bottom surface 11b of the cavity portion 20 may be the minimum thickness TB 1 or more of the platform 11.
- the cavity 20 is in the cord direction of the fins 12 within a height distance of the platform 11 from the bottom surface 11b of the platform 11 to a maximum thickness of TB 2 or more and HF / 3 or less.
- the length LV of the cavity 20 in the cord direction (see FIG. 8) provided in the region including the maximum blade thickness position P 0 (see FIG. 8) of the fin 12 is the cord length LF of the fin 12 (see FIG. 8). It may be 30% or more.
- the cord direction length of the cavity 20 is such that the height HV of the cavity 20 in the height direction from the bottom surface 11b is equal to or more than the maximum thickness of the platform 11 and HF / 5 or less. May be 50% or more of the fin cord length.
- the blade thickness of the fin 12 is relatively large.
- the region including the maximum blade thickness position P0 in the cord direction within the above-mentioned range in the height direction of the fin 12 that is, within the range in which the blade thickness of the fin 12 is relatively large. Since the cavity 20 having a length of 30% or more or 50% or more of the fin cord length is provided inside, the wall thickness of the fin 12 can be effectively reduced within the range in the height direction. Therefore, it is possible to effectively suppress sink marks due to shrinkage in the cooling process when molding the vortex generator 10, and it becomes easier to obtain the vortex generator 10 having the shape as designed.
- the cavity 20 is in the chord direction of the fins 12 within a height distance of the platform 11 from the bottom surface 11b of the platform 11 having a maximum thickness of TB 2 or more and HF / 5 or less.
- the width WV (see FIG. 8) of the fin 12 at the maximum blade thickness position P 0 is 50% or more of the blade thickness WF (see FIG. 8) of the fin 12 at the maximum blade thickness position P 0 .
- the blade thickness of the fin 12 is the size of the fin 12 in the thickness direction of the fin 12 orthogonal to the cord direction of the fin 12, and the width of the cavity 20 is the width of the cavity 20 in the thickness direction of the fin 12. The size.
- the cavity 20 is a fin in the cord direction of the fin 12 within a range where the distance from the bottom surface 11b in the height direction is within the range of the maximum thickness TB 2 or more and HF / 5 or less of the platform 11.
- the width WV at the maximum blade thickness position P0 of 12 is 50% or more of the blade thickness WF of the fin 12 at the maximum blade thickness position P0. Therefore, within the above range in the height direction, it is easy to reduce the wall thickness of the fin 12 at the maximum blade thickness position P0 of the fin 12. Therefore, it is possible to effectively suppress sink marks due to shrinkage in the cooling process when molding the vortex generator 10, and it becomes easier to obtain the vortex generator 10 having the shape as designed.
- the wall thickness TV of the fin 12 in the chord direction of the fin 12 at the position of the leading edge 13 of the fin 12 in 50% or more of the extension range of the cavity 20 in the height direction of the fin 12. is 0.5 times or more and 2.0 times or less the average ((TB 1 + TB 2 ) / 2) of the maximum thickness TB 2 and the minimum thickness TB 1 of the platform 11.
- the wall-thickness TV at the position of the leading edge 13 of the fin 12 is 0, which is the average of the maximum thickness TB 2 and the minimum thickness TB 1 of the platform 11. Since it is 5.5 times or more, it is possible to suppress a decrease in strength of the vortex generator 10 due to the provision of the cavity 20 in the fin 12. Further, within the above-mentioned range in the height direction, the wall thickness TV at the position of the leading edge 13 of the fin 12 is 2.0 times or less the average of the maximum thickness TB 2 and the minimum thickness TB 1 of the platform 11.
- the wall-thickness TV at the position of the leading edge 13 of the fin 12 can be made relatively thin, and sink marks due to shrinkage in the cooling process when molding the vortex generator 10 can be effectively suppressed. Therefore, it is possible to obtain the vortex generator 10 having the shape as designed while suppressing the decrease in the strength of the vortex generator.
- the fin 12 may include a leading edge portion 13'having a curved contour within a cross section orthogonal to the height direction. As shown in FIG. 4, the leading edge portion 13'of the fin 12 having a symmetrical shape with respect to the cord of the fin 12 has a curved contour. Further, as shown in FIG. 5, the leading edge portion 13'of the fin 12 having an asymmetrical shape with respect to the cord of the fin 12 also has a curved contour.
- the vortex generator 10 when the vortex generator 10 is installed on the wind turbine blade 1, the resistance to the flow of air flowing into the vortex generator 10 can be reduced, and the performance of the vortex generator 10 can be easily exhibited.
- the fin 12 may have an airfoil shape.
- the fin 12 may have a shape symmetrical with respect to the code of the fin 12.
- the fin 12 since the fin 12 has a shape symmetrical with respect to the cord of the fin 12, molding becomes easier as compared with the case where the fin 12 has a shape asymmetrical with respect to the cord.
- the fins 12 when the vortex generator 10 is molded by injection molding, the fins 12 have a symmetrical shape, so that the vortex generator 10 can be easily removed from the mold.
- the fin 12 may have an asymmetrical shape with respect to the cord of the fin 12, as shown in FIG.
- a rib 22 extending inside the cavity 20 along the thickness direction of the fin 12 is provided.
- the fin 12 When the cavity 20 is provided inside the fin 12, the fin 12 is easily deformed in the thickness direction of the fin 12, the fin 12 is easily deformed, and the platform 11 is also easily deformed along the thickness direction of the fin 12. Become.
- the rib 22 extending along the thickness direction of the fin 12 is provided inside the cavity 20, the deformation of the fin 12 in the thickness direction of the fin 12 is suppressed. be able to. Therefore, the deformation of the platform 11 due to the deformation of the fin 12 described above can be suppressed. Therefore, it becomes easier to obtain the vortex generator 10 having the shape as designed.
- the rib 22 may be integrally formed with the vortex generator 10 having the cavity 20 by injection molding or the like. Alternatively, the rib 22 may be installed inside the cavity 20 after forming the fin 12 of the vortex generator 10 having the cavity 20.
- the cavity 20 may be provided with one or more ribs 22.
- two ribs are provided in the cavity 20 at positions separated from each other in the cord direction of the fins 12.
- the rib 22 extends along the height direction of the fin 12 over 70% or more of the extension range of the cavity 20 in the height direction of the fin 12.
- the height HR of the rib 22 (see FIG. 7) is 70 of the extension range of the cavity 20 in the height direction of the fin 12 (height HV 1 of the cavity 20 at the position of the rib 22). It is set to% or more. That is, since the rib 22 extends along the height direction of the fin 12 over 70% or more of the extending range of the cavity 20 in the height direction of the fin 12, the fin 12 extends in the thickness direction of the fin 12. Deformation can be effectively suppressed. Therefore, the deformation of the platform 11 due to the deformation of the fins 12 can be effectively suppressed. Therefore, it becomes easier to obtain the vortex generator 10 having the shape as designed.
- the height HR of the rib 22 is the length of the rib 22 in the height direction of the fin 12.
- At least one of the ribs 22 has a leading edge 13 in the chord direction of the fin 12 at a position where the distance from the bottom surface 11b of the platform 11 in the height direction of the fin 12 is the maximum thickness of the platform 11. It is provided at a position where the distance from is LF / 2 (half of the cord length) or less.
- the rib 22 is provided in the region on the front edge side where the blade thickness of the fin 12 is relatively thick, the deformation of the platform 11 due to the deformation of the fin 12 can be effectively suppressed. Therefore, it becomes easier to obtain the vortex generator 10 having the shape as designed.
- the vortex generator 10 is provided in the fin 12, communicating with the cavity 20 and the surface of the fin (negative pressure surface 16 in FIGS. 9 and 10). ) Is provided with a hole 24.
- the hole 24 is a hole that opens to the surface of the fin 12 on one end side and opens to the surface 21 that forms the cavity 20 on the other end side.
- the fin 12 is provided with a hole 24 that communicates with the cavity 20 and opens on the surface of the fin 12, for example, by connecting an air suction device (not shown) to the hole 24, the hole is formed.
- the air in the cavity 20 can be evacuated through 24.
- a pressing force on the wind turbine blade 1 can be applied to the vortex generator 10, whereby the vortex generator can be easily attached to the wind turbine blade 1.
- the holes 24 are provided on the negative pressure surface 16 of the fins 12, as shown in FIGS. 9 and 10.
- the hole 24 may be provided on the pressure surface 15 of the fin 12. In this case, the processing work for forming the hole 24 is easy.
- the hole 24 may be provided in the trailing edge 19 (see FIGS. 4 and 8) including the trailing edge 14 of the fin 12. In this case, it is possible to suppress the deterioration of the aerodynamic performance of the vortex generator 10 due to the provision of the holes in the fins 12.
- the vortex generator 10 may be adhered to the wing body 2 with an adhesive material 30 (for example, double-sided tape or an adhesive).
- an adhesive material 30 for example, double-sided tape or an adhesive
- a step Z (see FIG. 9) is generated between the platform 11 and the surface of the blade body 2. Therefore, as shown in FIG. 10, the tape 32 may be adhered to the upper surface 11a of the platform 11 and the surface of the blade body 2 so as to cover the edge 11c of the platform 11 of the vortex generator 10. That is, the wind turbine blade 1 according to some embodiments is adhered to the upper surface 11a of the platform 11 and the surface of the blade body 2 (for example, the negative pressure surface 9) so as to cover the edge 11c of the platform 11 of the vortex generator 10.
- a tape 32 having an adhesive surface 32a is provided.
- the vortex generator 10 is adhered to the surface of the blade body 2 (for example, the negative pressure surface 9). At this time, for example, as shown in FIG. 9, the bottom surface 11b of the vortex generator 10 and the surface of the wing body 2 are bonded with an adhesive material 30 (double-sided tape, adhesive, etc.).
- an adhesive material 30 double-sided tape, adhesive, etc.
- tape 32 is attached to the upper surface 11a of the platform 11 and the surface of the wing body 2 so as to cover the edge 11c of the platform 11 of the vortex generator 10.
- the air inside the cavity 20 is sucked through the hole 24 of the vortex generator 10.
- This work is performed, for example, by connecting an air suction device to the hole 24.
- a sufficient pressing force can be easily applied to the vortex generator 10 at the time of attachment to the blade body 2. Therefore, the vortex generator 10 can be appropriately attached to the blade body 2 by a simple construction work. For example, even with the wind turbine blade 1 attached to the existing wind power generation device 40, a pressing force can be easily applied to the vortex generator 10 adhered to the surface of the blade main body 2. Therefore, the vortex generator 10 can be easily attached to the existing wind turbine blade 1.
- the vortex generator (10) for a wind turbine blade is Platform (11) and At least one fin (12) provided so as to project from the upper surface of the platform,
- a resin vortex generator for wind turbine wings equipped with The vortex generator includes a cavity 20 that opens to the bottom surface (11b) of the platform and extends to the inside of the fins.
- the vortex generator since the vortex generator is provided with a cavity extending to the inside of the fin, the wall thickness of the fin can be reduced with respect to the wall thickness of the platform. That is, according to the configuration of (1) above, it becomes easy to suppress sink marks due to shrinkage in the cooling process when molding the vortex generator from the resin material. Therefore, it becomes easy to obtain a vortex generator having the shape as designed.
- the maximum value of the height from the bottom surface of the cavity is set to HF / 3 or more, the area occupied by the cavity in the fin can be relatively large. Therefore, it becomes easy to reduce the wall thickness of the fins with respect to the wall thickness of the platform. Therefore, it is possible to effectively suppress sink marks due to shrinkage in the cooling process when molding the vortex generator, and it becomes easier to obtain a vortex generator having the shape as designed.
- the height of the cavity from the bottom surface at the maximum blade thickness position of the fin in the cord direction of the fin is set to be equal to or larger than the maximum thickness of the platform.
- the area occupied by the part can be made relatively large. Therefore, it becomes easy to reduce the wall thickness of the fins with respect to the wall thickness of the platform. Therefore, it is possible to effectively suppress sink marks due to shrinkage in the cooling process when molding the vortex generator, and it becomes easier to obtain a vortex generator having the shape as designed.
- the distance from the bottom surface in the height direction is in the range of the maximum thickness of the platform or more and HF / 3 or less.
- the cavity is provided in a region including the maximum blade thickness position of the fin in the cord direction of the fin.
- the length (LV) of the cavity in the cord direction is 30% or more of the cord length (LF) of the fin.
- the blade thickness of the fin 12 is relatively large in the range where the distance from the bottom surface of the platform in the fin height direction is HF / 3 or less.
- the cavity portion is finned in the cord direction of the fin.
- the length of the cavity in the cord direction is 30% or more of the cord length of the fin while being provided in the region including the maximum blade thickness position of the fin. Therefore, the wall thickness of the fins can be effectively reduced within the above range in the height direction. Therefore, it is possible to effectively suppress sink marks due to shrinkage in the cooling process when molding the vortex generator, and it becomes easier to obtain a vortex generator having the shape as designed.
- the distance from the bottom surface in the height direction is in the range of the maximum thickness of the platform or more and HF / 5 or less.
- the width (WV) of the fin at the maximum blade thickness position in the cord direction of the fin is 50% or more of the blade thickness (WF) of the fin at the maximum blade thickness position.
- the cavity portion is the maximum wing of the fin in the cord direction of the fin.
- the width at the thick position is 50% or more of the blade thickness of the fin at the maximum blade thickness position. Therefore, within the above range in the height direction, it is easy to reduce the wall thickness of the fin at the position of the maximum blade thickness of the fin. Therefore, it is possible to effectively suppress sink marks due to shrinkage in the cooling process when molding the vortex generator, and it becomes easier to obtain a vortex generator having the shape as designed.
- the wall thickness (TV) of the fin in the cord direction of the fin at the position of the leading edge of the fin is the maximum of the platform in 50% or more of the extension range of the cavity in the height direction of the fin. It is 0.5 times or more and 2.0 times or less the average of the thickness (TB 2 ) and the minimum thickness (TB 1 ).
- the strength of the vortex generator is reduced by providing the cavity in the fins. It can be suppressed.
- the wall thickness of the fins described above is 2.0 times or less the average of the maximum thickness and the minimum thickness of the platform, the wall thickness at the leading edge portion of the fins is relatively thin. As a result, sink marks due to shrinkage during the cooling process when molding the vortex generator can be effectively suppressed. Therefore, according to the configuration (6) above, it is possible to obtain a vortex generator having a shape as designed while suppressing a decrease in the strength of the vortex generator.
- the fins include a leading edge portion (13') having a curved contour in a cross section orthogonal to the height direction.
- the leading edge portion of the fin since the leading edge portion of the fin has a curved contour in a cross section orthogonal to the height direction, it flows into the vortex generator when the vortex generator is installed on the wind turbine blade. The resistance to the air flow can be reduced, and the performance of the vortex generator can be easily demonstrated.
- the fin has a shape symmetrical with respect to the code of the fin.
- the vortex generator can be easily formed as compared with the case where the fin has an asymmetrical shape with respect to the cord. be able to.
- a rib (22) extending inside the cavity along the thickness direction of the fin is provided.
- the rib extends along the height direction of the fin over 70% or more of the extension range of the cavity in the height direction of the fin.
- the ribs extend along the height direction of the fin over 70% or more of the extension range of the cavity in the height direction of the fin, so that the thickness of the fin Deformation of fins in the vertical direction can be effectively suppressed. Therefore, the deformation of the platform due to the above-mentioned deformation of the fins can be effectively suppressed. Therefore, it becomes easier to obtain a vortex generator having the shape as designed.
- the fin is provided with a hole (24) that communicates with the cavity and opens on the surface of the fin.
- the fin since the fin is provided with a hole that communicates with the cavity and opens on the surface of the fin, air in the cavity can be evacuated through the hole. Therefore, by removing the air in the cavity through this hole, the vortex generator can be applied with a pressing force against the wind turbine blade, whereby the vortex generator can be easily attached to the wind turbine blade.
- the wind turbine blade (1) according to at least one embodiment of the present invention is Wing body (2) and The vortex generator (10) according to any one of (1) to (11) above, which is attached to the surface of the wing body. To prepare for.
- the vortex generator since the vortex generator is provided with a cavity extending to the inside of the fin, the wall thickness of the fin can be reduced with respect to the wall thickness of the platform. That is, according to the configuration of (12) above, it becomes easy to suppress sink marks due to shrinkage in the cooling process when molding the vortex generator from the resin material. Therefore, it becomes easy to obtain a vortex generator having the shape as designed.
- the wind power generator (40) is The wind turbine rotor (42) including the wind turbine blade according to (12) or (13) above, and A generator configured to be driven by the wind turbine rotor, To prepare for.
- the vortex generator since the vortex generator is provided with a cavity extending to the inside of the fin, the wall thickness of the fin can be reduced with respect to the wall thickness of the platform. That is, according to the configuration of (14) above, it becomes easy to suppress sink marks due to shrinkage in the cooling process when molding the vortex generator from the resin material. Therefore, it becomes easy to obtain a vortex generator having the shape as designed.
- the method for manufacturing a wind turbine blade according to at least one embodiment of the present invention is as follows.
- the vortex generator is adhered to the surface of the wing body, and the air inside the cavity is sucked through the holes of the fins. Therefore, the vortex generator is attached to the wing body at the time of attachment. Sufficient pressing force can be easily applied to the surface. Therefore, the vortex generator can be appropriately attached to the wing body by a simple construction work.
- the present invention is not limited to the above-described embodiments, and includes a modified form of the above-described embodiments and a combination of these embodiments as appropriate.
- an expression representing a relative or absolute arrangement such as “in a certain direction”, “along a certain direction”, “parallel”, “orthogonal”, “center”, “concentric” or “coaxial”. Strictly represents not only such an arrangement, but also a tolerance or a state of relative displacement at an angle or distance to the extent that the same function can be obtained.
- expressions such as “same”, “equal”, and “homogeneous” that indicate that things are in the same state not only represent exactly the same state, but also have tolerances or differences to the extent that the same function can be obtained. It shall also represent the existing state.
- the expression representing a shape such as a square shape or a cylindrical shape not only represents a shape such as a square shape or a cylindrical shape in a geometrically strict sense, but also within a range in which the same effect can be obtained.
- the shape including the uneven portion, the chamfered portion, etc. shall also be represented.
- the expression “comprising”, “including”, or “having” one component is not an exclusive expression excluding the existence of another component.
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Abstract
Description
本願は、2020年11月27日に日本国特許庁に出願された特願2020-197391号に基づき優先権を主張し、その内容をここに援用する。
プラットフォームと、
前記プラットフォームの上面から突出して設けられた少なくとも一つのフィンと、
を備える樹脂製の風車翼用ボルテックスジェネレータであって、
前記ボルテックスジェネレータは、前記プラットフォームの底面に開口するとともに、前記フィンの内部まで及ぶ空洞部から構成される。
翼本体と、
前記翼本体の表面に取り付けられた上述のボルテックスジェネレータと、
を備える。
上述の風車翼を含む風車ロータと、
前記風車ロータによって駆動されるように構成された発電機と、
を備える。
翼本体と、前記フィンに設けられ、前記空洞部に連通するとともに前記フィンの表面に開口する孔を備えた上述のボルテックスジェネレータと、を含む風車翼の製造方法であって、
前記ボルテックスジェネレータを前記翼本体の表面に接着させるステップと、
前記孔を介して、前記空洞部の内部の空気を吸引するステップと、
を備える。
まず、図1及び図2を参照して、幾つかの実施形態に係るボルテックスジェネレータが適用される風車翼及び風力発電装置の全体構成について説明する。図1は、一実施形態に係る風力発電装置の概略構成図であり、図2は、一実施形態に係る風車翼の斜視図である。
なお、図1に示す実施形態において、ロータ42は、タワー46の上方に設けられたナセル44によって支持されている。また、タワー46は、水上又は陸上に設けられた土台構造48(基礎構造又は浮体構造等)に立設されている。
以下に説明するように、風力発電装置40の風車翼1には、一実施形態に係るボルテックスジェネレータが取り付けられている。
図2に示すように、風車翼1は、翼本体2と、翼本体2の表面(翼面)に取り付けられたボルテックスジェネレータ10と、を備える。
翼本体2は、風力発電装置40のハブ43に取り付けられる翼根3と、ハブ43から最も遠くに位置する翼先端4と、翼根3と翼先端4の間に延在する翼型部5と、を含む。また、風車翼1は、翼根3から翼先端4にかけて、前縁6と後縁7とを有する。また、風車翼1の外形は、圧力面(腹面)8と、圧力面8に対向する負圧面(背面)9とによって形成される。
なお、本明細書において、「翼長方向」とは、翼根3と翼先端4とを結ぶ方向である。
次に、図3~図10を参照して、幾つかの実施形態に係るボルテックスジェネレータ10について具体的に説明する。
図3は、一実施形態に係るボルテックスジェネレータ10の斜視図であり、図4~図5は、それぞれ、一実施形態に係るボルテックスジェネレータの平面図である。なお、図4は、図3に示すボルテックスジェネレータ10の平面図である。図6~図9は、それぞれ、一実施形態に係るボルテックスジェネレータ10の断面図である。図6は、図4のA-A断面を示す図であり、図7は、図4のB-B断面を示す図であり、図8は、図6のC-C断面を示す図であり、図9及び図10は、図4のD-D断面を示す図である。また、図9及び図10は、一実施形態に係るボルテックスジェネレータを該ボルテックスジェネレータが取り付けられる風車翼とともに示す図である。
風車翼1の負圧面9における流れの剥離は、前縁6近傍の層流域からその下流側の乱流域に向かって境界層が徐々に厚くなり、後縁7に到達する前に流れが剥がれてしまうことで生じる。
風車翼1に取り付けられたボルテックスジェネレータ10は、フィン12が生み出す揚力によって、フィン12の負圧面16側に縦渦を形成する。また、フィン12に流入した流れによって、フィン12の前縁13の最上流側位置13aから頂部13bに向かうエッジに沿った縦渦が形成される。このようにフィン12により生成される縦渦によって、ボルテックスジェネレータ10の後流側において、風車翼1面上の境界層内外でのフィン12の高さ方向における運動量交換が促進される。これにより、風車翼1の表面における境界相が薄くなり、風車翼1表面からの流れの剥離が抑制されるようになっている。
次に、図9及び図10を参照して、一実施形態に係る風車翼1の製造方法(あるいは風車翼1へのボルテックスジェネレータ10の取付方法)を説明する。
プラットフォーム(11)と、
前記プラットフォームの上面から突出して設けられた少なくとも一つのフィン(12)と、
を備える樹脂製の風車翼用ボルテックスジェネレータであって、
前記ボルテックスジェネレータは、前記プラットフォームの底面(11b)に開口するとともに、前記フィンの内部まで及ぶ空洞部20を含む。
前記フィンの高さ方向における、前記プラットフォームの底面と前記フィンの頂部(18)との距離をHFとしたとき、前記空洞部の前記底面からの高さの最大値は、HF/3以上である。
前記フィンの高さ方向における前記プラットフォームの最大厚さの位置を含み、前記プラットフォームの底面と平行な平面上での、前記フィンのコード方向における前記フィンの最大翼厚位置(P0)において、前記空洞部の前記底面からの高さ(HV)は、前記プラットフォームの最大厚さ(TB2)以上である。
前記フィンの高さ方向における前記プラットフォームの底面と前記フィンの頂部との距離をHFとしたとき、前記底面からの前記高さ方向における距離が前記プラットフォームの最大厚さ以上かつHF/3以下の範囲内において、
前記空洞部は、前記フィンのコード方向において前記フィンの最大翼厚位置を含む領域に設けられ、
前記コード方向における前記空洞部の長さ(LV)は、前記フィンのコード長(LF)の30%以上である。
前記フィンの高さ方向における前記プラットフォームの底面と前記フィンの頂部との距離をHFとしたとき、前記高さ方向における前記底面からの距離が前記プラットフォームの最大厚さ以上かつHF/5以下の範囲内において、前記空洞部は、前記フィンのコード方向での前記フィンの最大翼厚位置における幅(WV)が、前記最大翼厚位置における前記フィンの翼厚(WF)の50%以上である。
前記フィンの高さ方向での前記空洞部の延在範囲の50%以上において、前記フィンの前縁の位置での前記フィンのコード方向における前記フィンの肉厚(TV)が、前記プラットフォームの最大厚さ(TB2)と最小厚さ(TB1)との平均の0.5倍以上2.0倍以下である。
前記フィンは、前記高さ方向に直交する断面内にて曲線形状の輪郭を有する前縁部(13’)を含む。
前記フィンは、前記フィンのコードに対して対称な形状を有する。
前記空洞部の内部を前記フィンの厚さ方向に沿って延在するリブ(22)を備える。
前記リブは、前記フィンの高さ方向における前記空洞部の延在範囲の70%以上に亘って前記フィンの高さ方向に沿って延在する。
前記フィンに設けられ、前記空洞部に連通するとともに前記フィンの表面に開口する孔(24)を備える。
翼本体(2)と、
前記翼本体の表面に取り付けられた上記(1)乃至(11)の何れか一項に記載のボルテックスジェネレータ(10)と、
を備える。
前記ボルテックスジェネレータの前記プラットフォーム(11)の縁(11c)を覆うように、前記プラットフォームの上面(11a)、及び、前記翼本体の表面(例えば負圧面9)に接着される接着面(32a)を有するテープ(32)を備える。
上記(12)又は(13)に記載の風車翼を含む風車ロータ(42)と、
前記風車ロータによって駆動されるように構成された発電機と、
を備える。
翼本体(1)と、上記(11)に記載のボルテックスジェネレータ(10)と、を含む風車翼(1)の製造方法であって、
前記ボルテックスジェネレータを前記翼本体の表面(例えば負圧面9)に接着させるステップと、
前記孔(24)を介して、前記空洞部(20)の内部の空気を吸引するステップと、
を備える。
例えば、「同一」、「等しい」及び「均質」等の物事が等しい状態であることを表す表現は、厳密に等しい状態を表すのみならず、公差、若しくは、同じ機能が得られる程度の差が存在している状態も表すものとする。
また、本明細書において、四角形状や円筒形状等の形状を表す表現は、幾何学的に厳密な意味での四角形状や円筒形状等の形状を表すのみならず、同じ効果が得られる範囲で、凹凸部や面取り部等を含む形状も表すものとする。
また、本明細書において、一の構成要素を「備える」、「含む」、又は、「有する」という表現は、他の構成要素の存在を除外する排他的な表現ではない。
2 翼本体
3 翼根
4 翼先端
5 翼型部
6 前縁
7 後縁
8 圧力面
9 負圧面
10 ボルテックスジェネレータ
11 プラットフォーム
11a 上面
11b 底面
11c 縁
12(12A,12B) フィン
13 前縁
13’ 前縁部
13a 最上流側位置
13b 頂部
14 後縁
15 圧力面
16 負圧面
17 基部
18 頂部
19 後端面
20 空洞部
21 面
22 リブ
24 孔
30 接着材
32 テープ
32a 接着面
40 風力発電装置
42 ロータ
43 ハブ
44 ナセル
46 タワー
48 土台構造
HR リブの高さ
HV 空洞部の高さ
LF フィンのコード長
P0 フィンの最大翼厚位置
TB1 プラットフォームの最小厚さ
TB2 プラットフォームの最大厚さ
TV フィンの肉厚
WF フィンの翼厚
Z 段差
Claims (15)
- プラットフォームと、
前記プラットフォームの上面から突出して設けられた少なくとも一つのフィンと、
を備える樹脂製の風車翼用ボルテックスジェネレータであって、
前記ボルテックスジェネレータは、前記プラットフォームの底面に開口するとともに、前記フィンの内部まで及ぶ空洞部を含む
風車翼用のボルテックスジェネレータ。 - 前記フィンの高さ方向における、前記プラットフォームの底面と前記フィンの頂部との距離をHFとしたとき、前記空洞部の前記底面からの高さの最大値は、HF/3以上である
請求項1に記載の風車翼用のボルテックスジェネレータ。 - 前記フィンの高さ方向における前記プラットフォームの最大厚さの位置を含み、前記プラットフォームの底面と平行な平面上での、前記フィンのコード方向における前記フィンの最大翼厚位置において、前記空洞部の前記底面からの高さは、前記プラットフォームの最大厚さ以上である
請求項1又は2に記載の風車翼用のボルテックスジェネレータ。 - 前記フィンの高さ方向における前記プラットフォームの底面と前記フィンの頂部との距離をHFとしたとき、前記底面からの前記高さ方向における距離が前記プラットフォームの最大厚さ以上かつHF/3以下の範囲内において、
前記空洞部は、前記フィンのコード方向において前記フィンの最大翼厚位置を含む領域に設けられ、
前記コード方向における前記空洞部の長さは、前記フィンのコード長の30%以上である
請求項1乃至3の何れか一項に記載の風車翼用のボルテックスジェネレータ。 - 前記フィンの高さ方向における前記プラットフォームの底面と前記フィンの頂部との距離をHFとしたとき、前記高さ方向における前記底面からの距離が前記プラットフォームの最大厚さ以上かつHF/5以下の範囲内において、前記空洞部は、前記フィンのコード方向での前記フィンの最大翼厚位置における幅が、前記最大翼厚位置における前記フィンの翼厚の50%以上である
請求項1乃至4の何れか一項に記載の風車翼用のボルテックスジェネレータ。 - 前記フィンの高さ方向での前記空洞部の延在範囲の50%以上において、前記フィンの前縁の位置での前記フィンのコード方向における前記フィンの肉厚が、前記プラットフォームの最大厚さと最小厚さとの平均の0.5倍以上2.0倍以下である
請求項1乃至5の何れか一項に記載の風車翼用のボルテックスジェネレータ。 - 前記フィンは、前記高さ方向に直交する断面内にて曲線形状の輪郭を有する前縁部を含む
請求項1乃至6の何れか一項に記載の風車翼用のボルテックスジェネレータ。 - 前記フィンは、前記フィンのコードに関して対称な形状を有する
請求項1乃至7の何れか一項に記載の風車翼用のボルテックスジェネレータ。 - 前記空洞部の内部を前記フィンの厚さ方向に沿って延在するリブを備える
請求項1乃至8の何れか一項に記載の風車翼用のボルテックスジェネレータ。 - 前記リブは、前記フィンの高さ方向における前記空洞部の延在範囲の70%以上に亘って前記フィンの高さ方向に沿って延在する
請求項9に記載の風車翼用のボルテックスジェネレータ。 - 前記フィンに設けられ、前記空洞部に連通するとともに前記フィンの表面に開口する孔を備える
請求項1乃至10の何れか一項に記載の風車翼用のボルテックスジェネレータ。 - 翼本体と、
前記翼本体の表面に取り付けられた請求項1乃至11の何れか一項に記載のボルテックスジェネレータと、
を備える風車翼。 - 前記ボルテックスジェネレータの前記プラットフォームの縁を覆うように、前記プラットフォームの上面、及び、前記翼本体の表面に接着される接着面を有するテープを備える
請求項12に記載の風車翼。 - 請求項12又は13に記載の風車翼を含む風車ロータと、
前記風車ロータによって駆動されるように構成された発電機と、
を備える風力発電装置。 - 翼本体と、請求項11に記載のボルテックスジェネレータと、を含む風車翼の製造方法であって、
前記ボルテックスジェネレータを前記翼本体の表面に接着させるステップと、
前記孔を介して、前記空洞部の内部の空気を吸引するステップと、
を備える風車翼の製造方法。
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