JPH0666244A - Windmill vane - Google Patents
Windmill vaneInfo
- Publication number
- JPH0666244A JPH0666244A JP4222815A JP22281592A JPH0666244A JP H0666244 A JPH0666244 A JP H0666244A JP 4222815 A JP4222815 A JP 4222815A JP 22281592 A JP22281592 A JP 22281592A JP H0666244 A JPH0666244 A JP H0666244A
- Authority
- JP
- Japan
- Prior art keywords
- main girder
- longitudinal direction
- wind turbine
- strength
- turbine blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004744 fabric Substances 0.000 claims abstract description 33
- 239000011521 glass Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 description 4
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 102100040428 Chitobiosyldiphosphodolichol beta-mannosyltransferase Human genes 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000009787 hand lay-up Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Wind Motors (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、風力発電装置などに適
用される風車翼に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind turbine blade applied to a wind turbine generator or the like.
【０００２】[0002]
【従来の技術】図２は風力発電装置などに使用されてい
る従来の風車翼の説明図である。図において、本風車翼
は繊維強化プラスチックスＦＲＰ製で主桁１、外皮２，
３、接着層４，５、ウレタンフォーム６，７などから構
成されている。図における符号８，９は外皮２，３の接
合部である。このような風車翼における主要な強度部材
である主桁１はガラス繊維強化プラスチックスＧＦＲＰ
製で、幅が約２００mmで縦糸と横糸とが同じ割合で編ま
れている通常のガラスクロス１１とガラスマット１０と
を交互に包帯状に巻き付けるテープワインディング製
法、或いは風車翼の長手方向にガラスクロス１１とガラ
スマット１０とを交互に積層するハンドレイアップ製法
の何れかで製作されている。2. Description of the Related Art FIG. 2 is an explanatory view of a conventional wind turbine blade used in a wind turbine generator or the like. In the figure, the wind turbine blade is made of fiber reinforced plastic FRP, main girder 1, outer skin 2,
3, adhesive layers 4 and 5, urethane foams 6 and 7, and the like. Reference numerals 8 and 9 in the figure are joint portions of the outer skins 2 and 3. The main girder 1 which is a main strength member in such a wind turbine blade is a glass fiber reinforced plastic GFRP.
Tape winding method in which a normal glass cloth 11 and a glass mat 10 having a width of about 200 mm and a warp yarn and a weft yarn knitted at the same ratio are alternately wound in a bandage shape, or a glass cloth is formed in the longitudinal direction of the wind turbine blade. 11 and the glass mat 10 are alternately laminated by a hand lay-up manufacturing method.
【０００３】[0003]
【発明が解決しようとする課題】上記のように従来のＦ
ＲＰ製の風車翼における主桁１は、縦糸と横糸とが同じ
割合で編まれている通常のガラスクロス１１とガラスマ
ット１０とを交互に積層する構造となっており、素材の
種類等で若干の差はあるがＧＦＲＰの材料特性として引
張り強さが１０〜２０kgf/mm2 、引張り弾性率が１００
０〜１５００kgf/mm2 程度のものしか得られない。例え
ば、２５０KWの風車翼の場合は引張り強さが１２kgf/mm
2 、引張り弾性率は１２００kgf/mm2 である。風車翼は
回転による遠心力と、風を受けて回転することにより繰
り返される曲げ荷重を受ける。これらの負荷応力は何れ
も風車翼の長手方向に加わるものである。従って、風車
翼の強度部材である主桁１は風車翼の長手方向の強度を
特に必要とし、風車翼における５００KW級以上の大型化
には風車翼の軽量化とともに風車翼の主要な強度部材で
ある主桁１の、特に風車翼の長手方向の強度特性の向上
が必要である。As described above, the conventional F
The main girder 1 of the wind turbine blade made of RP has a structure in which a normal glass cloth 11 and a glass mat 10 in which warp yarns and weft yarns are knitted at the same ratio are alternately laminated. GFRP has a tensile strength of 10 to 20 kgf / mm 2 and a tensile elastic modulus of 100.
Only 0-1500 kgf / mm 2 can be obtained. For example, in the case of a 250 KW wind turbine blade, the tensile strength is 12 kgf / mm.
2 , the tensile elastic modulus is 1200 kgf / mm 2 . The wind turbine blade receives centrifugal force due to rotation and a bending load that is repeated by receiving wind and rotating. All of these load stresses are applied in the longitudinal direction of the wind turbine blade. Therefore, the main girder 1, which is a strength member of the wind turbine blade, requires a particular strength in the longitudinal direction of the wind turbine blade, and in order to increase the size of the wind turbine blade to 500 KW or more, it is necessary to reduce the weight of the wind turbine blade as well as the main strength member of the wind turbine blade. It is necessary to improve the strength characteristics of a certain main girder 1, especially in the longitudinal direction of the wind turbine blade.
【０００４】[0004]
【課題を解決するための手段】本発明に係る風車翼は上
記課題の解決を目的にしており、外皮の長手方向に挿入
された主桁により強度が保持される風車翼において、上
記主桁の長手方向に一方向ロービングクロスが積層され
るとともに上記一方向ロービングクロスの積層上にガラ
スクロスとガラスマットとが包帯状に積層された構成を
特徴とする。SUMMARY OF THE INVENTION A wind turbine blade according to the present invention is intended to solve the above problems, and in a wind turbine blade whose strength is maintained by a main girder inserted in the longitudinal direction of the outer skin, The unidirectional roving cloth is laminated in the longitudinal direction, and the glass cloth and the glass mat are laminated on the laminated unidirectional roving cloth in a band shape.
【０００５】[0005]
【作用】即ち、本発明に係る風車翼においては、外皮の
長手方向に挿入された主桁により強度が保持される風車
翼における主桁の長手方向に一方向ロービングクロスが
積層されるとともに一方向ロービングクロスの積層上に
ガラスクロスとガラスマットとが包帯状に積層されてお
り、先ず一方向ロービングクロスが主桁の長手方向に積
層されることにより主桁の長手方向の強度が向上する。
この積層はロービングクロスだけとし、ガラスマットは
併用しない。次に、一方向ロービングクロスの積層上に
通常のガラスクロスとガラスマットとが包帯状に積層さ
れる。この積層は最初に積層した一方向ロービングクロ
スを保持し、ガラスマットを使用することにより適度な
樹脂量を確保し、主桁の長手方向のみならず横方向の強
度も或る程度確保する。必要に応じ、これらの積層が交
互に繰り返される。That is, in the wind turbine blade according to the present invention, the unidirectional roving cloth is laminated in the longitudinal direction of the main girder of the wind turbine blade whose strength is maintained by the main girder inserted in the longitudinal direction of the outer skin. The glass cloth and the glass mat are laminated on the laminated roving cloth in a band shape. First, the unidirectional roving cloth is laminated in the longitudinal direction of the main girder to improve the strength of the main girder in the longitudinal direction.
This lamination is made of roving cloth only and no glass mat is used. Then, a normal glass cloth and a glass mat are laminated in a bandage shape on the laminated unidirectional roving cloth. This lamination retains the unidirectional roving cloth laminated first and secures an appropriate amount of resin by using a glass mat, and secures not only the longitudinal strength of the main girder but also the transverse strength to some extent. These laminations are repeated alternately as needed.
【０００６】[0006]
【実施例】図１は本発明の一実施例に係る風車翼の説明
図である。図において、本実施例に係る風車翼は風力発
電装置などに使用され、繊維強化プラスチックスＦＲＰ
製で主桁１、外皮２，３、接着層４，５、ウレタンフォ
ーム６，７などから構成されている。図における符号
８，９は外皮２，３の接合部である。このような風車翼
における主要な強度部材である主桁１は、風車翼全体の
重量の約７〜８割を占めており、主桁１の高強度化及び
軽量化は風車翼の大型化および軽量化、風車タワーの小
型、軽量化等に対して非常に重要である。風車翼は回転
による遠心力と、風を受けて回転することにより繰り返
される曲げ荷重とを受ける。これらの負荷応力は何れも
風車翼の長手方向に加わるものである。従って、風車翼
の強度部材である主桁１は風車翼の長手方向の強度を特
に必要とし、風車における５００KW級以上の大型化には
風車翼の軽量化とともに風車翼の主要な強度部材である
主桁１の、特に風車翼の長手方向の強度特性の向上が必
要である。1 is an explanatory view of a wind turbine blade according to an embodiment of the present invention. In the figure, the wind turbine blade according to the present embodiment is used for a wind turbine generator or the like, and is made of fiber reinforced plastic FRP.
It is made of a main girder 1, outer skins 2, 3, adhesive layers 4, 5, urethane foam 6, 7, and the like. Reference numerals 8 and 9 in the figure are joint portions of the outer skins 2 and 3. The main girder 1 which is a main strength member in such a wind turbine blade occupies about 70 to 80% of the weight of the entire wind turbine blade, and the higher strength and the lighter weight of the main girder 1 increase the size and size of the wind turbine blade. It is very important to reduce the weight and the size and weight of the wind turbine tower. The wind turbine blade receives a centrifugal force due to rotation and a bending load which is repeated by receiving wind and rotating. All of these load stresses are applied in the longitudinal direction of the wind turbine blade. Therefore, the main girder 1, which is the strength member of the wind turbine blade, requires the strength in the longitudinal direction of the wind turbine blade in particular, and it is a main strength member of the wind turbine blade as well as the weight reduction of the wind turbine blade in order to increase the size of the wind turbine to 500 KW or more. It is necessary to improve the strength characteristics of the main girder 1, particularly in the longitudinal direction of the wind turbine blade.
【０００７】本風車翼においては図に示すように、先ず
主桁１の長手方向の強度を向上させるため、縦糸だけの
クロスで横糸は縦糸を保持する補強用として若干入って
いる一方向ロービングクロス１２が主桁１の長手方向に
複数層に積層されている。なお、ロービングクロス１２
は２〜６層が適当であるが、これに限ることはない。こ
の積層はロービングクロス１２だけで、通常用いられて
いるガラスマットは使用されていない。次に、このロー
ビングクロス１２の積層上に縦糸と横糸とが同じ割合で
編まれている通常のガラスクロス１１とガラスマット１
０とが同時にテープワインディング法により包帯状に１
層だけ積層されている。この積層は一方向ロービングク
ロス１２を強固に保持すること、またガラスマット１０
を使用することにより適度な樹脂量を確保すること、さ
らに主桁１の長手方向のみならず横方向の強度も或る程
度確保することなどを目的としている。そして、これら
の積層が交互に繰り返されて所定の板厚を形成してい
る。In the present wind turbine blade, as shown in the figure, first, in order to improve the strength of the main girder 1 in the longitudinal direction, a unidirectional roving cloth in which only the warp threads are included and the weft threads are slightly included as reinforcements for holding the warp threads. 12 are laminated in a plurality of layers in the longitudinal direction of the main girder 1. The roving cloth 12
2 to 6 layers are suitable, but not limited to this. This stack is made up of only the roving cloth 12, and the commonly used glass mat is not used. Next, a normal glass cloth 11 and a glass mat 1 in which warp yarns and weft yarns are knitted in the same ratio on the laminated roving cloth 12.
0 and 1 at the same time as a bandage by the tape winding method
Only layers are stacked. This stack firmly holds the unidirectional roving cloth 12, and the glass mat 10
The purpose is to secure an appropriate amount of resin and to secure the strength of the main girder 1 not only in the longitudinal direction but also in the lateral direction to some extent. Then, these laminations are alternately repeated to form a predetermined plate thickness.
【０００８】従来の構造を有するＧＦＲＰ製の主桁と、
本実施例におけるＧＦＲＰ製の主桁１とを、実際の主桁
１製造用の金型に積層して試作した。試作された主桁は
おおよそ長さが３ｍ、断面は長軸が２５０mm、短軸が１
５０mm、肉厚が２０mmの楕円形で、これらの主桁からそ
れぞれ引張り試験用のテストピースを切り出して主桁の
長手方向及び横方向の引張り特性を調査した。その結果
を表１に示す。A main girder made of GFRP having a conventional structure,
The main girder 1 made of GFRP in this example was laminated on an actual die for manufacturing the main girder 1 for trial production. The prototype main girder has a length of approximately 3 m, and the cross section has a major axis of 250 mm and a minor axis of 1.
Test pieces for tensile test were cut out from these main girders, each having an elliptical shape with a thickness of 50 mm and a wall thickness of 20 mm, and the tensile properties in the longitudinal direction and the transverse direction of the main girders were investigated. The results are shown in Table 1.
【０００９】[0009]
【表１】 [Table 1]
【００１０】従来の構造を有する主桁は長手方向と横方
向との強度特性に差がなく、引張り強さは１０〜１３kg
f/mm2 、引張り弾性率は１２００〜１５００kgf/mm2 で
あった。これに対し、本実施例に係る主桁１は長手方向
の引張り強さが２４〜２６kgf/mm2 、引張り弾性率が２
２００〜２６００kgf/mm2 であり、横方向の引張り強さ
が１０〜１２kgf/mm2 、引張り弾性率が１２００〜１５
００kgf/mm2 と引張り方向により強度特性に差があり、
長手方向の強度特性がかなり向上している。このように
主桁１は従来の構造を有する主桁と比較して長手方向で
約２倍程度に強度が向上しており、風車翼の軽量化、強
度の信頼性が充分に期待できる。なお、主桁１の横方向
の強度は表１に示す程度の強度特性があれば十分で、特
に問題となることはない。これにより、風車翼の大型
化、軽量化が容易で、風車タワーの小型、軽量化ができ
るとともに、高強度化により風車翼の寿命及び信頼性の
向上が図られる。The main girder having the conventional structure has no difference in the strength characteristics in the longitudinal direction and the transverse direction, and the tensile strength is 10 to 13 kg.
f / mm 2 and tensile elastic modulus were 1200 to 1500 kgf / mm 2 . On the other hand, the main girder 1 according to the present embodiment has a tensile strength in the longitudinal direction of 24 to 26 kgf / mm 2 , and a tensile elastic modulus of 2.
200 to 2600 kgf / mm 2 , tensile strength in the transverse direction is 10 to 12 kgf / mm 2 , and tensile elastic modulus is 1200 to 15
There is a difference in strength characteristics depending on the pulling direction, such as 00 kgf / mm 2 ,
The strength characteristics in the longitudinal direction are considerably improved. As described above, the main girder 1 has about twice as much strength in the longitudinal direction as compared with the main girder having the conventional structure, and the weight reduction of the wind turbine blade and the reliability of the strength can be expected sufficiently. The strength of the main girder 1 in the lateral direction is sufficient as long as it has strength characteristics as shown in Table 1, and there is no particular problem. As a result, it is possible to easily increase the size and weight of the wind turbine blade, reduce the size and weight of the wind turbine tower, and improve the life and reliability of the wind turbine blade by increasing the strength.
【００１１】[0011]
【発明の効果】本発明に係る風車翼は前記のように構成
されており、主桁の長手方向の強度が向上するので、風
車翼の大型化、軽量化が容易になる。The wind turbine blade according to the present invention is constructed as described above, and since the strength of the main girder in the longitudinal direction is improved, it is easy to increase the size and weight of the wind turbine blade.
【図１】図１（ａ）は本発明の一実施例に係る風車翼の
斜視図、同図（ｂ）は同図（ａ）におけるｂ−ｂ断面
図、同図（ｃ）はその主桁の平面図、同図（ｄ）は同図
（ｃ）におけるｄ−ｄ断面図、同図（ｅ）は同図（ｄ）
におけるｅ部詳細図である。FIG. 1 (a) is a perspective view of a wind turbine blade according to an embodiment of the present invention, FIG. 1 (b) is a sectional view taken along line bb in FIG. 1 (a), and FIG. A plan view of the girder, the same figure (d) is a sectional view taken along the line dd in the same figure (c), and the same figure (e) is the same figure (d).
3 is a detailed view of an e portion in FIG.
【図２】図２（ａ）は従来の風車翼の斜視図、同図
（ｂ）は同図（ａ）におけるｂ−ｂ断面図、同図（ｃ）
はその主桁の平面図、同図（ｄ）は同図（ｃ）における
ｄ−ｄ断面図、同図（ｅ）は同図（ｄ）におけるｅ部詳
細図である。2 (a) is a perspective view of a conventional wind turbine blade, FIG. 2 (b) is a sectional view taken along line bb in FIG. 2 (a), and FIG. 2 (c).
Is a plan view of the main girder, FIG. 7D is a sectional view taken along the line d-d in FIG. 7C, and FIG. 8E is a detailed view of portion e in FIG.
１ 主桁 ２，３ 外皮 ４，５ 接着層 ６，７ ウレタンフォーム ８，９ 接合部 １０ ガラスマット １１ ガラスクロス １２ 一方向ロービングクロス 1 Main girder 2,3 Outer skin 4,5 Adhesive layer 6,7 Urethane foam 8,9 Joint 10 Glass mat 11 Glass cloth 12 Unidirectional roving cloth
───────────────────────────────────────────────────── フロントページの続き (72)発明者 島田 保 長崎市飽の浦町１番１号 三菱重工業株式 会社長崎造船所内 (72)発明者 鈴木 章弘 長崎市飽の浦町１番１号 三菱重工業株式 会社長崎造船所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Yasushi Shimada 1-1, Nagano-shi, Atsunoura-machi Nagasaki Shipyard Co., Ltd. In-house
Claims (1)
強度が保持される風車翼において、上記主桁の長手方向
に一方向ロービングクロスが積層されるとともに上記一
方向ロービングクロスの積層上にガラスクロスとガラス
マットとが包帯状に積層されたことを特徴とする風車
翼。1. In a wind turbine blade, the strength of which is maintained by a main girder inserted in the longitudinal direction of an outer skin, a unidirectional roving cloth is laminated in the longitudinal direction of the main girder, and a unidirectional roving cloth is laminated on the laminated unidirectional roving cloth. A wind turbine blade characterized in that a glass cloth and a glass mat are laminated in a bandage shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22281592A JP3337243B2 (en) | 1992-08-21 | 1992-08-21 | Windmill wing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22281592A JP3337243B2 (en) | 1992-08-21 | 1992-08-21 | Windmill wing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0666244A true JPH0666244A (en) | 1994-03-08 |
| JP3337243B2 JP3337243B2 (en) | 2002-10-21 |
Family
ID=16788347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22281592A Expired - Fee Related JP3337243B2 (en) | 1992-08-21 | 1992-08-21 | Windmill wing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3337243B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006161669A (en) * | 2004-12-07 | 2006-06-22 | Toray Ind Inc | Blade member |
| KR101037309B1 (en) * | 2006-12-06 | 2011-05-27 | 스미토모 덴소 가부시키가이샤 | Exterior protective assembly of the wire harness for the door and layout of the wire harness for the door |
| WO2011077881A1 (en) | 2009-12-22 | 2011-06-30 | 三菱重工業株式会社 | Wind wheel blade and wind-driven electricity generation device using same |
| US8043067B2 (en) | 2006-03-24 | 2011-10-25 | Mitsubishi Heavy Industries, Ltd. | Wind turbine blade with sufficiently high strength and light weight |
| US8419373B1 (en) | 2011-10-12 | 2013-04-16 | Mitsubishi Heavy Industries, Ltd. | Wind turbine blade, wind turbine generator equipped with wind turbine blade and method of designing wind turbine blade |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5881896A (en) * | 1981-11-11 | 1983-05-17 | 三菱重工業株式会社 | Aircraft plane made of composite material |
| JPS60113099U (en) * | 1983-12-29 | 1985-07-31 | 株式会社 カルト産業 | Rotor blade for model helicopter |
| JPS62282177A (en) * | 1986-05-31 | 1987-12-08 | Yamaha Motor Co Ltd | Blade fixing structure for windmill rotor |
| JPS63168338A (en) * | 1986-12-29 | 1988-07-12 | Nippon Reinetsu:Kk | Rotational frp forming of long hollow product |
| JPH0495669U (en) * | 1991-01-22 | 1992-08-19 |
-
1992
- 1992-08-21 JP JP22281592A patent/JP3337243B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5881896A (en) * | 1981-11-11 | 1983-05-17 | 三菱重工業株式会社 | Aircraft plane made of composite material |
| JPS60113099U (en) * | 1983-12-29 | 1985-07-31 | 株式会社 カルト産業 | Rotor blade for model helicopter |
| JPS62282177A (en) * | 1986-05-31 | 1987-12-08 | Yamaha Motor Co Ltd | Blade fixing structure for windmill rotor |
| JPS63168338A (en) * | 1986-12-29 | 1988-07-12 | Nippon Reinetsu:Kk | Rotational frp forming of long hollow product |
| JPH0495669U (en) * | 1991-01-22 | 1992-08-19 |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006161669A (en) * | 2004-12-07 | 2006-06-22 | Toray Ind Inc | Blade member |
| US8043067B2 (en) | 2006-03-24 | 2011-10-25 | Mitsubishi Heavy Industries, Ltd. | Wind turbine blade with sufficiently high strength and light weight |
| US8475135B2 (en) | 2006-03-24 | 2013-07-02 | Mitsubishi Heavy Industries, Ltd. | Wind turbine blade with sufficiently high strength and light weight |
| KR101037309B1 (en) * | 2006-12-06 | 2011-05-27 | 스미토모 덴소 가부시키가이샤 | Exterior protective assembly of the wire harness for the door and layout of the wire harness for the door |
| WO2011077881A1 (en) | 2009-12-22 | 2011-06-30 | 三菱重工業株式会社 | Wind wheel blade and wind-driven electricity generation device using same |
| US8172542B2 (en) | 2009-12-22 | 2012-05-08 | Mitsubishi Heavy Industries, Ltd. | Wind turbine blade and wind turbine generator using the same |
| US8419373B1 (en) | 2011-10-12 | 2013-04-16 | Mitsubishi Heavy Industries, Ltd. | Wind turbine blade, wind turbine generator equipped with wind turbine blade and method of designing wind turbine blade |
| WO2013054404A1 (en) * | 2011-10-12 | 2013-04-18 | 三菱重工業株式会社 | Wind turbine blade, wind power generation device provided with same, and design method for wind turbine blade |
| CN103270296A (en) * | 2011-10-12 | 2013-08-28 | 三菱重工业株式会社 | Windmill blade, wind power generation device having same, and design method of windmill blade |
| JP5297558B1 (en) * | 2011-10-12 | 2013-09-25 | 三菱重工業株式会社 | Wind turbine blade, wind turbine generator equipped with the wind turbine blade, and wind turbine blade design method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3337243B2 (en) | 2002-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4699255B2 (en) | Windmill wing | |
| US4786541A (en) | Fiber material for reinforcing plastics | |
| KR20110100192A (en) | Wind turbine blades and wind turbine generator using the same | |
| US4622254A (en) | Fiber material for reinforcing plastics | |
| US5741574A (en) | Truss reinforced foam core sandwich | |
| JP6786256B2 (en) | Systems and methods for forming composites | |
| CN105128455B (en) | Composite core and plate | |
| US3673058A (en) | Honeycomb having laminates of unidirectional strands | |
| EP3018293A1 (en) | Composite article with fibre-reinforced sandwich core | |
| EP2732153A2 (en) | Chordwise lay-up of fibre sheet material for turbine blades | |
| JPH0666244A (en) | Windmill vane | |
| JP2000245880A (en) | Golf club shaft | |
| JP3094851B2 (en) | Civil and architectural reinforcement | |
| EP3341192B1 (en) | Composite members and methods of manufacturing same | |
| JPH0674142A (en) | Main beam of frp vane for wind mill and manufacture thereof | |
| JP4667069B2 (en) | Carbon fiber sheet | |
| JPS5887042A (en) | Reinforcing material for fiber reinforced resin | |
| JP5132326B2 (en) | Carbon fiber tape material for concrete repair and reinforcement | |
| JP2004174775A (en) | Reinforcing fiber substrate for fiber-reinforced plastic material | |
| JP4067855B2 (en) | Fiber-reinforced resin plate with improved bending strength in the longitudinal direction | |
| JPH04127869U (en) | windmill blade | |
| JPS60163936A (en) | Scrim-cloth laminated prepreg | |
| CN117656541A (en) | Pre-cured fibrous element for spar caps of wind turbine blades | |
| JP2008013886A (en) | Reinforcing fiber fabric | |
| JPH0220748A (en) | Fixing device for fiber-reinforced plastic tension material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20000801 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020709 |
|
| LAPS | Cancellation because of no payment of annual fees |