WO2015145723A1 - 風車翼及びそれを備えた風力発電装置 - Google Patents
風車翼及びそれを備えた風力発電装置 Download PDFInfo
- Publication number
- WO2015145723A1 WO2015145723A1 PCT/JP2014/059127 JP2014059127W WO2015145723A1 WO 2015145723 A1 WO2015145723 A1 WO 2015145723A1 JP 2014059127 W JP2014059127 W JP 2014059127W WO 2015145723 A1 WO2015145723 A1 WO 2015145723A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blade
- wind turbine
- tip
- wing
- turbine blade
- Prior art date
Links
- 230000000630 rising effect Effects 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 5
- 230000003187 abdominal effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- UJCHIZDEQZMODR-BYPYZUCNSA-N (2r)-2-acetamido-3-sulfanylpropanamide Chemical class CC(=O)N[C@@H](CS)C(N)=O UJCHIZDEQZMODR-BYPYZUCNSA-N 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
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
- F03D1/0608—Rotors characterised by their aerodynamic shape
- F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F05B2240/307—Blade tip, e.g. winglets
-
- 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
- F05B2260/96—Preventing, counteracting or reducing vibration or noise
-
- 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 invention relates to a wind turbine blade and a wind turbine generator provided with the wind turbine blade.
- Wind power generation is domestic energy that uses clean natural energy, does not need to depend on overseas suppliers, and does not emit greenhouse gases. Large, highly efficient windmills are used on a commercial basis.
- the outer edge of the wing (especially near the tip) is in the high Re number region, and therefore an aircraft wing type represented by the NACA series can be used as the wing.
- an aircraft wing type represented by the NACA series can be used as the wing.
- negative pressure is generated on the upper surface side (rear surface side) and positive pressure is generated on the lower surface side (abdominal surface side), so that a vortex flowing from the lower surface toward the upper surface due to the pressure difference between the upper and lower surfaces at the wing tip ( A tip vortex) is generated.
- This vortex induces an airflow different from the traveling direction (rotation direction) around the wing, and acts in a direction to reduce the airflow impinging on the wing, that is, a direction to reduce the angle of attack of the wing.
- the direction of the aerodynamic force acting on the wing is inclined backward by an angle corresponding to the decrease in the angle of attack (guide angle of attack), but the component parallel to the traveling direction (rotation direction) is In practice, it will act as a drag.
- This drag is an induced drag (inductive resistance) and becomes a power loss of the windmill.
- noise is generated by the tip vortex.
- Inductive drag is a drag that cannot be avoided as long as the wings generate lift, and is a drag that occurs due to the presence of a wing tip.
- the induced drag can be reduced. If the induced drag is reduced, the drag is reduced as a whole, and as a result, the lift-drag ratio is increased, so that the required thrust or the required horsepower can be reduced.
- Wind turbine blades also use blades with a large aspect ratio to reduce the chord length at the blade tip and reduce the drag caused by the vortex at the blade tip as much as possible. Absent.
- the sound power level of the windmill with respect to the rotor diameter tends to increase as the rotor diameter increases in large windmills. From this, it is considered that the influence of the peripheral speed at the blade tip due to the increase in the noise is greater than the influence of the rotational speed.
- wind turbine noise is classified into wing aerodynamic noise, mechanical noise from nacelles, towers, etc., but wing aerodynamic noise is dominant in large wind turbines of 1 to 3 MW class currently constructed in wind farms. is there. For this reason, it is necessary to reduce aerodynamic noise generated from the blades in order to reduce wind turbine noise. Although the noise due to the blade tip vortex is limited, the flow at the blade tip portion is disturbed and causes power loss.
- Patent Document 1 describes a wind turbine blade provided with a winglet formed by bending the blade tip portion at a predetermined angle (15 ° to 55 °) on the back side or the abdomen side. According to the wind turbine blade having such a configuration, the vortex generated at the blade tip portion of the wind turbine blade can be reduced, so that the power loss due to the blade tip vortex can be reduced. In addition, the generation of noise due to vortices generated at the tip of the wind turbine blade can be reduced.
- the wind turbine blade described in Patent Document 1 can reduce power loss and noise generation compared to a wind turbine blade without a winglet, it has a large rotor diameter of 1 to 3 MW class or more. When applied to a wind turbine blade of a wind turbine, generation of power loss and noise cannot be sufficiently reduced.
- the present invention has been made in view of the above-described conventional problems, and even when applied to a wind turbine blade of a large wind turbine of 1 to 3 MW class or larger in which the rotor diameter is increased, It is an object of the present invention to provide a wind turbine blade capable of sufficiently reducing loss and noise generation and a wind turbine generator having the wind turbine blade.
- the present invention employs the following means. That is, the present invention relates to a wind turbine blade used in a horizontal axis lift type wind turbine, wherein the blade body has a streamlined cross-sectional shape in which the chord length gradually decreases from the blade root to the blade tip, and the blade tip of the blade body.
- a small winglet with a pointed tip provided integrally with the winglet, the tip of which is behind the trailing edge of the wing tip of the wing body and in the wing length direction of the wing body. The shape is set so that it is located in the direction.
- the pressure difference between the upper and lower surfaces at the blade tip portion of the wind turbine blade can be reduced, so that the blade tip vortex generated at the blade tip portion can be weakened.
- the generated noise can be reduced.
- the tip of the winglet is positioned behind the trailing edge of the wing tip of the wing body in the rotational direction and outward in the blade length direction of the wing body, so that the position of the wing tip vortex is generated on the wing body. It can be separated from the rear edge of the blade tip and outward, and the influence of the blade tip vortex on the wind turbine blade can be reduced, so that the induced drag can be reduced and the power loss can be reduced.
- the winglet may be provided integrally with the blade tip of the wing body so that the upper and lower surfaces rise at a predetermined angle with respect to the upper and lower surfaces of the wing body.
- the position of the blade tip vortex generated at the blade tip of the wind turbine blade is above the upper surface of the blade tip of the blade body and behind the trailing edge of the blade tip of the blade body, Moreover, it can be separated outward from the blade tip of the blade body. Therefore, the power loss of the wind turbine blade can be reduced, and the moment generated at the blade root of the wind turbine blade by the induced drag can be reduced.
- the rising angle of the winglet may be 30 ° to 90 °.
- the wind turbine blade of the present invention even when applied to various wind turbine blades having different cross-sectional shapes by appropriately setting the rising angle of the small blade within a range of 30 ° to 90 °, Loss and generation of aerodynamic noise can be reliably reduced.
- the winglet may be formed in a substantially sickle shape in plan view with a sharp tip.
- the blade tip vortex generated at the tip of the wind turbine blade can be weakened by the small blade having a substantially sickle shape in a plan view with a sharp tip, and power loss and aerodynamic noise can be reduced. Generation can be reduced.
- the winglet may be formed in a substantially triangular shape in plan view with a sharp tip.
- the blade tip vortex generated at the blade tip portion of the wind turbine blade can be weakened by a small triangular blade having a pointed tip in a plan view, and power loss and aerodynamic noise can be reduced. Generation can be reduced.
- the winglet can be easily manufactured.
- the trailing edge of the winglet has a cross-sectional streamline shape having the same size and shape as the wing tip of the wing body, and the trailing edge of the winglet is integrated with the wing tip of the wing body. It is good also as being attached.
- the connecting portion between the small blade and the blade body can be smoothed, it is possible to prevent turbulence from occurring at the connecting portion between the two.
- the present invention also includes a windmill comprising a plurality of windmill blades according to any one of claims 1 to 6 and a generator that changes the rotational energy of the windmill into electrical energy.
- the pressure difference between the upper and lower surfaces at the blade tip portion of the wind turbine blade can be reduced, so that it occurs at the blade tip portion. It is possible to weaken the blade tip vortex and reduce power loss.
- the position where the blade tip vortex is generated can be separated from the wind turbine blade tip in the rotational direction and outward and upward in the blade length direction of the wind turbine blade. Generation of noise can be reduced.
- FIG. 2 is a plan view showing an embodiment of a wind turbine blade according to the present invention, and is a plan view of a right side portion of the line AA in FIG. 1 as viewed from the front side of FIG.
- FIG. 4 is a front view of FIG. 3, and is a front view of a right side portion of the line AA in FIG. 1 as viewed from a direction B of FIG. 1.
- FIG. 2 is a plan view of the winglet, and is a plan view of the winglet at the tip of the right portion of the line AA in FIG. 1 as viewed from the front side of FIG.
- FIG. 2 is a cross-sectional view taken along line AA in FIG. It is the top view which showed other embodiment of the windmill blade by this invention.
- the wind turbine generator 1 of the present embodiment includes a horizontal axis lift type windmill 2, a generator 5 that converts rotational energy of the windmill 2 into electrical energy, Ancillary equipment 6 is provided.
- the windmill 2 includes a tower 3 standing on the ground or the like, a nacelle 4 installed at the upper end of the tower 3 so as to face substantially in the horizontal direction, and a tip of the nacelle 4. And a plurality of wind turbine blades 11 attached rotatably.
- the nacelle 4 has a box shape having a void inside, and the generator 5 and its associated equipment 6 are accommodated in the void of the nacelle 4.
- a rotating shaft 7 on the generator 5 side protrudes from the tip of the nacelle 4 by a predetermined length, and a rotor hub 8 is attached to the protruding portion of the rotating shaft 7.
- the rotor hub 8 has, for example, a cylindrical shape, and is integrally attached to the tip of the rotating shaft 7 by means such as fitting.
- a plurality of support shafts 9 are integrally attached radially to the rotary shaft 7, and wind turbine blades 11 are attached to the respective support shafts 9.
- the rotor hub 8 and the support shaft 9 are closed by a cover 10 whose tip is formed in a spherical shape, and only the wind turbine blades 11 are configured to project radially outward from the cover 10.
- the wind turbine blade 11 is formed of fiber reinforced plastic such as glass fiber reinforced plastic or carbon fiber reinforced plastic. As shown in FIGS. 3 to 6, the one end 15 side in the length direction is on the rotor hub 8 side.
- the blade main body 12 has a hollow plate shape attached to the support shaft 9 and a small blade 25 provided integrally with the other end 16 of the blade main body 12 in the blade length direction. 3 to 6, the attachment portion of the blade body 12 with the rotor hub 8 is not shown.
- one end 15 of the wing body 12 is referred to as a blade root 15 and the other end 16 is referred to as a blade tip 16.
- the blade main body 12 has a streamline shape in cross section as shown in FIG. 6, and the chord length a gradually decreases from the blade root 15 to the blade tip 16 in the blade length direction as shown in FIG.
- the chord length a and the blade thickness b are set so that the blade thickness b gradually decreases from the blade root 15 to the blade tip 16 in the blade length direction, and the chord length a and the blade thickness b are minimized.
- a small wing 25 is integrally provided at the wing tip 16 of the wing body 12.
- the cross-sectional streamline shape means a cross-sectional shape in which the front edge 18 in the rotation direction is round and the rear edge 19 in the rotation direction is sharp, as shown in FIG.
- the chord length a means the length of a straight line (also referred to as a chord line) connecting the leading edge 18 and the trailing edge 19 of the wing body 12, and the blade thickness b is the chord length a. It means the distance between the upper surface 13 and the lower surface 14 of the wing body 12 in the orthogonal direction.
- the winglet 25 has a reference line 20 (a line connecting positions corresponding to 1/4 of the chord length a) and a reference line 34 (1/4 of the chord length a). Lines connecting corresponding positions) are integrally attached to the blade tip 16 of the blade body 12 by a bonding means such as an adhesive so as to obtain relevance.
- the reference line 34 changes the direction of rotation while drawing a substantially sickle-shaped curve in plan view.
- the winglet 25 is formed, for example, in a shape in which the tip 28 is pointed, the rear end 29 is formed in a straight line, and the front edge 30 and the rear edge of the tip 28 and the rear end 29.
- the front side line 32 and the rear side line 33 that connect to 31 have a substantially sickle shape in a plan view formed in a curve with a predetermined curvature, respectively, and the straight portion of the rear end 29 is the blade tip 16 of the blade body 12. It is attached to the unit.
- the small blade 25 has a cross-sectional streamline shape in which the cross-sectional shape of the rear end 29 is the same as the cross-sectional shape of the blade tip 16 of the blade main body 12, and the rear end 29 is attached to the blade tip 16 of the blade main body 12. Furthermore, the leading edge 30 and trailing edge 31 of the trailing edge 29 of the winglet 25 are continuous with the leading edge 18 and trailing edge 19 of the blade tip 16 of the wing body 12, and the upper surface 26 and the lower surface 27 of the trailing edge 29 of the winglet 25. Is integrally attached to the blade tip 16 of the blade body 12 so as to be continuous with the upper surface 13 and the lower surface 14 of the blade body 12.
- the winglet 25 has a tip 28 positioned behind the trailing edge 19 of the wing tip 16 of the wing body 12, and the tip 28 is outward from the wing tip 16 of the wing body 12 (
- the lengths of the front side line 32 and the rear side line 33 connecting the front end 28 and the front edge 30 and the rear edge 31 of the rear end 29, the front side line 32 and the rear side An angle formed with the side line 33 is set.
- the small wing 25 is formed on the blade tip 16 of the wing body 12 so that the upper and lower surfaces 26 and 27 rise at a predetermined angle with respect to the upper and lower surfaces 13 and 14 of the wing body 12.
- An attachment angle (hereinafter referred to as a rising angle) ⁇ is set.
- the small blade 25 is attached to the blade tip 16 of the blade body 12 so that the rising angle ⁇ is 30 °.
- the above-described rising angle ⁇ can be appropriately set within a range of 30 ° to 90 °.
- the small blade 25 is integrally attached to the blade tip 16 of the blade main body 12 by a bonding means such as an adhesive, but the small blade 25 may be formed integrally with the blade main body 12.
- the winglet 25 is formed in a substantially sickle shape in plan view, but the winglet 25 may be formed in a substantially triangular shape in plan view for easy manufacture.
- the small blade 25 having a substantially sickle shape with a sharp tip provided at the blade tip 16 of the blade body 12 of the wind turbine blade 11 is provided.
- a large pressure difference between the upper and lower surfaces 13 and 14 at the blade tip 16 of the blade body 12 of the wind turbine blade 11 can be converted into a small pressure difference by the tapered small blade 25. it can. That is, since the winglet 25 is formed in a shape in which the cross-sectional area becomes smaller toward the tip, the pressure difference between the upper and lower surfaces 26 and 27 of the winglet 25 becomes smaller toward the tip of the winglet 25 and becomes smaller.
- the pressure difference at the blade tip of the wind turbine blade 11 can be made smaller than that without the blade 25.
- the blade tip vortex generated at the blade tip of the wind turbine blade 11 can be weakened. 11 can reduce the induced drag generated at the blade tip, reduce the power loss of the windmill 2 as a whole, and increase the output of the windmill 2.
- the tip 28 of the winglet 25 is sharpened so that the tip 28 of the winglet 25 is behind the trailing edge 19 of the wing tip 16 of the wing body 12 and is longer than the wing tip 16 of the wing body 12.
- a large pressure difference at the upper and lower surfaces 13 and 14 at the blade tip 16 of the blade body 12 of the wind turbine blade 11 can be converted into a small pressure difference by the tapered small blade 25.
- the blade tip vortex generated at the blade tip portion of the wind turbine blade 11 (portion corresponding to the small blade 25) can be weakened, and the position where the weak blade tip vortex is generated is determined at the tip 28 of the small blade 25, that is, the blade body 12. It can be separated from the rear edge 19 of the blade tip 16 and outward in the blade length direction of the blade body 12.
- the position of the blade tip vortex generated at the blade tip portion of the wind turbine blade 11 is The blade body 12 is spaced above the upper surface 13 of the blade tip 16, behind the trailing edge 19 of the blade tip 16 of the blade body 12, and outward in the blade length direction from the blade tip 16 of the blade body 12. be able to.
- the power loss required by multiplying the induced resistance generated at the blade tip portion of the wind turbine blade 11 by the blade length and the moment generated at the blade root of the wind turbine blade 11 are expressed by using the upper and lower surfaces 26 and 27 of the small blade 25 as the blade body. Therefore, the efficiency of the wind turbine 2 as a whole can be improved without strengthening the structure of the wind turbine blades 11.
- FIG. 7 shows another embodiment of the wind turbine generator 1 according to the present invention.
- the blade tip 16 of the blade body 12 of the wind turbine blade 11 is advanced in a cross-sectional streamline shape in which the cross-sectional shape of one end 22 is the same size and shape as the blade tip 16 of the blade main body 12.
- the wing portion 21 is integrally formed with an advancing wing portion 21 in which a reference line 24 is inclined forward by a predetermined angle with respect to the reference line 20 of the wing body 12, and the other end 23 (the wing tip 23) of the advancing wing portion 21 is formed.
- a small blade 25 having the same configuration as that of the above-described embodiment is integrally attached, and the other configurations are the same as those shown in the above-described embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
Description
すなわち、本発明は、水平軸揚力型の風車に用いられる風車翼であって、翼根から翼端にかけて翼弦長が漸次小さくなる断面流線形状の翼本体と、該翼本体の翼端に一体に設けられる先端が尖った形状の小翼とを備え、前記小翼は、先端が前記翼本体の翼端の後縁よりも回転方向の後方、かつ、前記翼本体の翼長方向の外方に位置するように、形状が設定されていることを特徴とする。
また、小翼の先端を翼本体の翼端の後縁よりも回転方向の後方、かつ、翼本体の翼長方向の外方に位置させたことにより、翼端渦の発生位置を翼本体の翼端の後縁よりも後方、かつ、外方に離すことができ、風車翼への翼端渦による影響を低減させることができるため、誘導抗力を低減させて動力損失を低減させることができる。
また、翼端渦の発生する位置を、風車翼の翼端よりも回転方向の後方、かつ、風車翼の翼長方向の外方、かつ、上方に離すことができるので、翼端渦による空気騒音の発生を低減させることができる。
図1~図6には、本発明による風力発電装置の一実施の形態が示されている。本実施の形態の風力発電装置1は、図1及び図2に示すように、水平軸揚力型の風車2と、風車2の回転エネルギーを電気エネルギーに変換する発電機5と、発電機5の付帯設備6と備えている。
なお、図3~図6では、翼本体12のローターハブ8との取付部は図示を省略している。
また、以下において、翼本体12の一端15を翼根15といい、他端16を翼端16という。
また、翼弦長aとは、翼本体12の前縁18と後縁19とを結ぶ直線(翼弦線ともいう。)の長さを意味し、翼厚bとは、翼弦長aと直交する方向の翼本体12の上面13と下面14との間の距離を意味する。
なお、本実施の形態においては、立上角度θが30°となるように、翼本体12の翼端16に小翼25を取り付けている。但し、これに限定することなく、上記の立上角度θは、30°~90°の範囲内で適宜に設定することができる。
また、本実施の形態においては、小翼25を平面視略鎌形状に形成しているが、簡便に製作するために、小翼25を平面視略三角形状に形成してもよい。
2 風車
3 塔
4 ナセル
5 発電機
6 付帯設備
7 回転軸
8 ローターハブ
9 支持軸
10 カバー
11 風車翼
12 翼本体
13 上面(背面)
14 下面(腹面)
15 一端(翼根)
16 他端(翼端)
17 翼端部
18 前縁
19 後縁
20 基準線
21 前進翼部
22 一端
23 他端(翼端)
24 基準線
25 小翼
26 上面(背面)
27 下面(腹面)
28 先端
29 後端
30 前縁
31 後縁
32 前側線
33 後側線
34 基準線
a 翼弦長(翼弦線)
b 翼厚
θ 立上角度
Claims (7)
- 水平軸揚力型の風車に用いられる風車翼であって、
翼根から翼端にかけて翼弦長が漸次小さくなる断面流線形状の翼本体と、該翼本体の翼端に一体に設けられる先端が尖った形状の小翼とを備え、
前記小翼は、先端が前記翼本体の翼端の後縁よりも回転方向の後方、かつ、前記翼本体の翼長方向の外方に位置するように、形状が設定されていることを特徴とする風車翼。 - 前記小翼は、上下面が前記翼本体の上下面に対して所定の角度立上るように、前記翼本体の翼端に一体に設けられていることを特徴とする請求項1に記載の風車翼。
- 前記小翼の立上角度は、30°~90°であることを特徴とする請求項2に記載の風車翼。
- 前記小翼は、先端が尖った平面視略鎌形状に形成されていることを特徴とする請求項1~3の何れか1項に記載の風車翼。
- 前記小翼は、先端が尖った平面視略三角形状に形成されていることを特徴とする請求項1~3の何れか1項に記載の風車翼。
- 前記小翼の後端は、前記翼本体の翼端と同一大きさ、形状の断面流線形状をなし、該小翼の後端が前記翼本体の翼端に一体に取り付けられていることを特徴とする請求項1~5の何れか1項に記載の風車翼。
- 請求項1~6の何れか1項に記載の風車翼を複数備えてなる風車と、該風車の回転エネルギーを電気エネルギーに変化する発電機とを備えていることを特徴とする風力発電装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/059127 WO2015145723A1 (ja) | 2014-03-28 | 2014-03-28 | 風車翼及びそれを備えた風力発電装置 |
JP2015512413A JP5805913B1 (ja) | 2014-03-28 | 2014-03-28 | 風車翼及びそれを備えた風力発電装置 |
EP14887028.0A EP3130799A4 (en) | 2014-03-28 | 2014-03-28 | Wind turbine blade and wind power generator provided with same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/059127 WO2015145723A1 (ja) | 2014-03-28 | 2014-03-28 | 風車翼及びそれを備えた風力発電装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015145723A1 true WO2015145723A1 (ja) | 2015-10-01 |
Family
ID=54194312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/059127 WO2015145723A1 (ja) | 2014-03-28 | 2014-03-28 | 風車翼及びそれを備えた風力発電装置 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3130799A4 (ja) |
JP (1) | JP5805913B1 (ja) |
WO (1) | WO2015145723A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111664052A (zh) * | 2020-06-24 | 2020-09-15 | 曹正武 | 一种叶梢小翼式螺旋桨(风扇) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000310179A (ja) * | 1999-04-27 | 2000-11-07 | Fuji Heavy Ind Ltd | 水平軸風車用ロータ |
JP2006521483A (ja) * | 2003-01-02 | 2006-09-21 | アロイス・ヴォベン | 風力発電設備用のローターブレード |
US20110150664A1 (en) * | 2009-12-22 | 2011-06-23 | Siegfried Mickeler | Aeroacoustic rotor blade for a wind turbine, and wind turbine equipped therewith |
JP2012180771A (ja) * | 2011-02-28 | 2012-09-20 | Mitsubishi Heavy Ind Ltd | 風車翼およびこれを備えた風力発電装置 |
JP2012233445A (ja) * | 2011-05-02 | 2012-11-29 | Birumen Kagoshima:Kk | 風力発電装置用の風車の翼及び風力発電装置用の風車 |
JP2012251448A (ja) * | 2011-06-01 | 2012-12-20 | Toru Fukushima | 直径10m以上のプロペラ型風力発電機のブレード減音の形状形態 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2362091A1 (en) * | 2010-06-30 | 2011-08-31 | Envision Energy (Denmark) ApS | Rotor blade vibration damping system |
WO2013083130A1 (en) * | 2011-12-09 | 2013-06-13 | Vestas Wind Systems A/S | Wind turbine including blades with suction side winglet |
US9920741B2 (en) * | 2012-01-25 | 2018-03-20 | Siemens Aktiengesellschaft | Wind turbine blade having a geometric sweep |
US20150132141A1 (en) * | 2013-11-08 | 2015-05-14 | Siemens Aktiengesellschaft | Rotor blade of a wind turbine |
-
2014
- 2014-03-28 WO PCT/JP2014/059127 patent/WO2015145723A1/ja active Application Filing
- 2014-03-28 JP JP2015512413A patent/JP5805913B1/ja active Active
- 2014-03-28 EP EP14887028.0A patent/EP3130799A4/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000310179A (ja) * | 1999-04-27 | 2000-11-07 | Fuji Heavy Ind Ltd | 水平軸風車用ロータ |
JP2006521483A (ja) * | 2003-01-02 | 2006-09-21 | アロイス・ヴォベン | 風力発電設備用のローターブレード |
US20110150664A1 (en) * | 2009-12-22 | 2011-06-23 | Siegfried Mickeler | Aeroacoustic rotor blade for a wind turbine, and wind turbine equipped therewith |
JP2012180771A (ja) * | 2011-02-28 | 2012-09-20 | Mitsubishi Heavy Ind Ltd | 風車翼およびこれを備えた風力発電装置 |
JP2012233445A (ja) * | 2011-05-02 | 2012-11-29 | Birumen Kagoshima:Kk | 風力発電装置用の風車の翼及び風力発電装置用の風車 |
JP2012251448A (ja) * | 2011-06-01 | 2012-12-20 | Toru Fukushima | 直径10m以上のプロペラ型風力発電機のブレード減音の形状形態 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3130799A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP5805913B1 (ja) | 2015-11-10 |
EP3130799A4 (en) | 2017-04-12 |
JPWO2015145723A1 (ja) | 2017-04-13 |
EP3130799A1 (en) | 2017-02-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8932024B2 (en) | Wind turbine blade and wind power generator using the same | |
EP3037656B1 (en) | Rotor blade with vortex generators | |
CN103089536B (zh) | 安装在风力涡轮机叶片上的失速栅上的副翼面 | |
EP2275672B1 (en) | Boundary layer fins for wind turbine blade | |
KR101520898B1 (ko) | 평평한 뒷전형상을 갖는 복합재 풍력 블레이드의 제작방법 | |
EP2194267B1 (en) | Root sleeve for wind turbine blade | |
US10690112B2 (en) | Fluid turbine rotor blade with winglet design | |
EP3453872B1 (en) | Methods for mitigating noise during high wind speed conditions of wind turbines | |
US10100808B2 (en) | Rotor blade extension body and wind turbine | |
EP2990643B1 (en) | Rotor blade of a wind turbine | |
JP6101240B2 (ja) | 後縁側パネル | |
US20120217754A1 (en) | Wind turbine blade, wind turbine generator with the same, and design method of wind turbine blade | |
KR101216252B1 (ko) | 풍력발전기 블레이드의 팁 에어포일 | |
AU2016228275A1 (en) | A turbine blade assembly | |
WO2018046067A1 (en) | Wind turbine blade comprising an airfoil profile | |
JP2017166324A (ja) | タービン用t形先端翼 | |
WO2009093337A1 (ja) | 垂直軸型風車 | |
JP5805913B1 (ja) | 風車翼及びそれを備えた風力発電装置 | |
WO2012053424A1 (ja) | 風車翼およびこれを備えた風力発電装置ならびに風車翼の設計方法 | |
US20130149161A1 (en) | Conical wind turbine | |
JP6158019B2 (ja) | 軸流水車発電装置 | |
KR20110092609A (ko) | 소음도가 저감된 도시형 저풍속/정속운전용 풍력발전기 블레이드의 팁 에어포일 | |
JP2009299650A (ja) | 整流型流体車 | |
KR101216308B1 (ko) | 풍력발전기 블레이드의 루트 에어포일 | |
KR101331133B1 (ko) | 풍력발전기용 블레이드 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2015512413 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14887028 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2014887028 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014887028 Country of ref document: EP |