JPH081167B2 - Windmill Rotor Blade - Google Patents
Windmill Rotor BladeInfo
- Publication number
- JPH081167B2 JPH081167B2 JP61124677A JP12467786A JPH081167B2 JP H081167 B2 JPH081167 B2 JP H081167B2 JP 61124677 A JP61124677 A JP 61124677A JP 12467786 A JP12467786 A JP 12467786A JP H081167 B2 JPH081167 B2 JP H081167B2
- Authority
- JP
- Japan
- Prior art keywords
- outer shell
- web
- molded body
- blade
- shell molded
- 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.)
- Expired - Lifetime
Links
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)
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明は風車のロータブレードに関するものである。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a rotor blade of a wind turbine.
風車は風力発電機等の駆動源として使用されるが、そ
の風車に対して自然風のエネルギを極力損失が少なくな
るように効率的に取り出すためには、風車のロータブレ
ードを出来るだけ軽量にすることが望ましい。このよう
な観点から、ブレードは樹脂成形体によって中空構造に
するのが一般的になっている。A wind turbine is used as a drive source for a wind power generator, etc., but in order to efficiently extract the energy of the natural wind to the wind turbine so that the loss is minimized, the rotor blades of the wind turbine are made as light as possible. Is desirable. From such a point of view, it is general that the blade has a hollow structure made of a resin molding.
このような中空構造のブレードを樹脂成形する場合、
一度の成形で完全な中空構造にすることは金型費用等の
関係からコスト高になってしまう。そのため、ブレード
を背側の外殻成形体と腹側の外殻成形体との分割構造に
し、この両分割成形体を接合して一体の中空構造にする
のが有利とされている。また一方、このような樹脂成形
体からなる中空構造体は、外殻だけの構造であると剛性
が不足し、風力エネルギを効率的に採取することが難し
くなる。そのため、背側と腹側との両外殻成形体の間に
必ずウェブを介在接着させて補強を行うようにしてい
る。When resin molding a blade with such a hollow structure,
The cost of making a completely hollow structure by molding once becomes high due to the cost of the mold. Therefore, it is advantageous that the blade has a divided structure of the outer shell molded body on the back side and the outer shell molded body on the abdominal side, and these two divided molded bodies are joined to form an integral hollow structure. On the other hand, the hollow structure made of such a resin molded body lacks rigidity if it has a structure of only an outer shell, and it becomes difficult to efficiently collect wind energy. Therefore, a web is always interposed and bonded between the back shell and the belly shell to provide reinforcement.
ところが、二つの外殻成形体の間にウェブを介在接着
させる作業は、ウェブ自体を二つの外殻成形体の内側に
作業者には見えない隠れた状態にして両外側から押圧力
を加えて行うようにするため、ウェブが外殻成形体の裏
面に確実に接着されているか否かを確認することができ
ない。そのため、接着信頼性に欠けるという問題があっ
た。However, in the work of interposing and adhering the web between the two outer shell molded bodies, the web itself is hidden inside the two outer shell molded bodies in a state invisible to the operator and a pressing force is applied from both outer sides. In order to do so, it is not possible to confirm whether or not the web is securely bonded to the back surface of the outer shell molded body. Therefore, there is a problem that adhesion reliability is lacking.
本発明の目的は、分割型の外殻成形体にウェブを介在
接着させるものでありながら、そのウェブの接着信頼性
を向上した剛性の高いロータブレードを提供することに
ある。It is an object of the present invention to provide a rotor blade having high rigidity, in which the web is interposed and bonded to a split type outer shell molded body, and the reliability of the bonding of the web is improved.
上記目的を達成する本発明のロータブレードは、背側
の外殻成形体と腹側の外殻成形体とが互いに接合した中
空構造からなり、前記腹側の外殻成形体を横断面の中間
部に内側に凹状に屈曲したウェブを一体形成した構造に
すると共に、該ウェブの頂面を前記背側の外殻成形体の
内面に接着させ、かつ該ウェブの開口側を前記腹側の外
殻成形体の外面に沿うカバーにより閉塞したことを特徴
とするものである。The rotor blade of the present invention which achieves the above object is formed of a hollow structure in which a back side outer shell formed body and an abdominal side outer shell formed body are joined to each other, and the belly side outer shell formed body is formed at an intermediate portion of a cross section. Has a structure in which a concavely bent web is integrally formed on the inside, the top surface of the web is adhered to the inner surface of the outer shell molded body on the back side, and the opening side of the web is the belly side outer shell. It is characterized in that it is closed by a cover along the outer surface of the molded body.
以下、本発明を図に示す実施例により説明する。 Hereinafter, the present invention will be described with reference to an embodiment shown in the drawings.
第３図は本発明のロータブレードを有するプロペラ型
風車からなる風力発電機を示す。１は上下に延びる支柱
であり、その上端にナセル２を介してロータ３が取り付
けられている。ロータ３はハブ４に第1,2図に示すよう
な本発明からなる２枚のブレード5,5を対設して構成さ
れている。また、ナセル２は支柱１の軸心回りに回転自
在に支持され、かつその中心に図示しない横方向の回転
軸を支持している。ロータ３のハブ４およひナセル２の
外側は、それぞれカウリング7,8で覆われている。FIG. 3 shows a wind power generator comprising a propeller type wind turbine having a rotor blade according to the present invention. Reference numeral 1 is a column extending vertically, and a rotor 3 is attached to the upper end of the column via a nacelle 2. The rotor 3 comprises a hub 4 and two blades 5 and 5 of the present invention as shown in FIGS. Further, the nacelle 2 is rotatably supported around the axis of the column 1, and a lateral rotation shaft (not shown) is supported at the center thereof. The outer sides of the hub 4 and the nacelle 2 of the rotor 3 are covered with cowlings 7 and 8, respectively.
上記ロータ３はナセル２に支持された回転軸の先端に
固定され、その回転がヨークケース６内に設けた図示し
ない発電機に伝達されるようになっている。この構成に
おいて、ロータ３は矢印方向Ｗの風に対してナセル２を
支柱１の回りに回転させながら風下側に移動し、そのロ
ータ３自身の回転を発電機に伝達するようにしている。The rotor 3 is fixed to the tip of a rotary shaft supported by the nacelle 2, and its rotation is transmitted to a generator (not shown) provided in the yoke case 6. In this structure, the rotor 3 moves downward on the nacelle 2 while rotating the nacelle 2 around the column 1 with respect to the wind in the direction W, and transmits the rotation of the rotor 3 itself to the generator.
上記ブレード５は樹脂成形体からなる中空構造になっ
ており、第２図に示すような平面視形状と第１図に示す
ような翼断面形状を有している。The blade 5 has a hollow structure made of a resin molding, and has a plan view shape as shown in FIG. 2 and a blade cross-sectional shape as shown in FIG.
第１図に示すブレード５の翼断面において、ａは前
縁、ｂは後縁、ｃは背、ｄは腹である。ブレード５の外
殻は背ｃ側の外殻成形体51と腹ｄ側の外殻成形体52とに
分割構成され、それぞれ前縁ａおよび後縁ｂにおいて接
着剤10,11により接着されている。一方の腹側の外殻成
形体52は、横断面の中間部を内側に凹状に屈曲させてウ
ェブ53を形成しており、そのウェブ53の頂面を接着剤12
を介して背側の外殻成形体51の内面に接着させている。
また、ウェブ53の内側に形成された凹状空間53aの開口
部は樹脂製のカバー54によって閉塞され、かつそのカバ
ー54は接着剤13によって固定されている。このカバー54
は腹側の外殻成形体52の外表面と面一になるようにウェ
ブ53の開口部を閉塞し、この閉塞によりブレード５が風
を受けて回転する際の抵抗の増加を防止し、回転に支障
がないようにする。In the blade cross section of the blade 5 shown in FIG. 1, a is a leading edge, b is a trailing edge, c is a back, and d is an antinode. The outer shell of the blade 5 is divided into an outer shell molded body 51 on the back c side and an outer shell molded body 52 on the abdominal d side, which are adhered by adhesives 10 and 11 at the front edge a and the rear edge b, respectively. On the other hand, the outer shell molded body 52 on the ventral side has a web 53 formed by bending the middle portion of the cross section inward to form a web 53.
It is bonded to the inner surface of the outer shell molded body 51 on the back side via.
The opening of the concave space 53a formed inside the web 53 is closed by a resin cover 54, and the cover 54 is fixed by the adhesive 13. This cover 54
Seals the opening of the web 53 so as to be flush with the outer surface of the outer shell molded body 52 on the ventral side, and this blockage prevents an increase in resistance when the blade 5 receives wind and rotates, and So that it doesn't hurt.
上記外殻成形体51,52は全面にわたり、ブレード５の
長手方向に対し互いに45°の交差角をなす補強繊維から
なる補強織物55によって補強されているが、さらに背側
の外殻成形体51はウェブ53の頂面に対応する部分に、ブ
レード５の長手方向に沿って一方向性の補強繊維テープ
56を埋設しており、また腹側の外殻成形体52にも、ウェ
ブ53の根部に対応する部分に同じく一方向性の補強繊維
テープ56をブレード５の長手方向に沿って埋設してい
る。上記補強織物55や補強繊維テープ56を構成する補強
繊維としては、ガラス繊維，炭素繊維，炭化珪素繊維，
ボロン繊維，芳香族ポリアミド繊維等が好ましく使用さ
れ、補強織物55はブレード５の捩りに対する剛性を付与
し、また一方向性の補強繊維テープ56はブレード５の長
手方向に対する曲げに対する剛性を付与するようにして
いる。The outer shell molded bodies 51, 52 are reinforced over the entire surface with a reinforcing woven fabric 55 made of reinforcing fibers having a crossing angle of 45 ° with the longitudinal direction of the blade 5. Is a reinforcing fiber tape which is unidirectional along the longitudinal direction of the blade 5 at a portion corresponding to the top surface of the web 53.
56 is embedded, and also in the outer shell molded body 52 on the ventral side, a unidirectional reinforcing fiber tape 56 is also embedded along the longitudinal direction of the blade 5 in a portion corresponding to the root of the web 53. . As the reinforcing fibers forming the reinforcing fabric 55 and the reinforcing fiber tape 56, there are glass fiber, carbon fiber, silicon carbide fiber,
Boron fibers, aromatic polyamide fibers, etc. are preferably used, and the reinforcing woven fabric 55 imparts rigidity to the torsion of the blade 5, and the unidirectional reinforcing fiber tape 56 imparts rigidity to bending of the blade 5 in the longitudinal direction. I have to.
上述した分割成形体からなるブレード５を組み立てる
ときは、まず背側と腹側の二つの外殻成形体51,52を互
いに接合して中空構造体にし、次いでウェブ53の凹状空
間53aをカバー54で閉塞するようにする。このときウェ
ブ53の両外殻成形体51,52に対する接着部は、根部側は
腹側の外殻成形体52に対してはじめから一体成形されて
いるので接着作業は不要であり、頂面側だけを背側の外
殻成形体51の裏面に対して接着するようにすればよい。
このウェブ53の頂面の接着作業は、ウェブ53の頂面の背
部に凹状空間53aが形成されているため、その凹状空間5
3aに治具等を差し込むようにすれば、ウェブ53の頂面を
外殻成形体51の裏面の正確な位置に押圧力を加えた状態
で確実な接着を行うことができる。このようにウェブを
直接押圧する接着作業であるため、接着信頼性を極めて
高いものにすることができる。When assembling the above-described divided molded body blade 5, first, the two outer shell molded bodies 51 and 52 on the back side and the abdominal side are joined to each other to form a hollow structure, and then the concave space 53a of the web 53 is covered by the cover 54. Try to block it. At this time, the bonding portion of the web 53 to both outer shell molded bodies 51, 52 is integrally formed on the root side from the outer shell molded body 52 on the abdominal side from the beginning, so no bonding work is required, and the top surface side Only the back side of the outer shell molded body 51 may be bonded.
In the bonding work of the top surface of the web 53, since the concave space 53a is formed in the back portion of the top surface of the web 53, the concave space 5 is formed.
If a jig or the like is inserted into 3a, reliable bonding can be performed with the top surface of the web 53 being pressed to the correct position on the back surface of the outer shell molded body 51 with a pressing force applied. Since the bonding operation is to directly press the web as described above, the bonding reliability can be made extremely high.
また、図示の実施例のように、ウェブ53の頂面の接着
部分が対応する外殻成形体51の部分に、一方向性の補強
繊維テープ56を埋設すると共に、同様にウェブ53の根部
が対応する外殻成形体52の部分にも一方向性の補強繊維
テープ56を埋設すると、それぞれの外殻成形体51,52に
長手方向に対して高い剛性が付与されることによって接
着面に長手方向に高い寸法精度が与えられるため、ウェ
ブ53の接着精度を長手方向全体にわたり一層確実にする
ことができるようになる。Further, as in the illustrated embodiment, a unidirectional reinforcing fiber tape 56 is embedded in a portion of the outer shell molded body 51 to which the adhesive portion on the top surface of the web 53 corresponds, and similarly the root portion of the web 53 is When the unidirectional reinforcing fiber tape 56 is embedded also in the corresponding outer shell molded body 52, high rigidity is imparted to the respective outer shell molded bodies 51, 52 in the longitudinal direction, so that the bonding surface is lengthened. Since high dimensional accuracy is provided in the direction, the adhesion accuracy of the web 53 can be further ensured in the entire longitudinal direction.
上述したように本発明による風車用ロータブレード
は、背側の外殻成形体と腹側の外殻成形体とが互いに接
合した中空構造からなり、前記腹側の外殻成形体を横断
面の中間部に内側に凹状に屈曲したウェブを一体形成し
た構造にすると共に、該ウェブの頂面を前記背側の外殻
成形体の内面に接着させ、かつ該ウェブの開口側を前記
腹側の外殻成形体の外面に沿うカバーにより閉塞したも
のである。As described above, the rotor blade for a wind turbine according to the present invention has a hollow structure in which the outer shell molded body on the back side and the outer shell molded body on the belly side are joined to each other, and the belly side outer shell molded body has an intermediate cross section. The structure is such that a concavely bent web is integrally formed inwardly in the portion, the top surface of the web is adhered to the inner surface of the outer shell molded body on the back side, and the opening side of the web is the outer side of the belly side. It is closed by a cover along the outer surface of the shell molded body.
したがって、ウェブの頂面を背側の外殻成形体の内面
に接着する際、そのウェブの頂面を正確な位置で裏側か
ら押圧力を加えた状態で直接接着させることが可能にな
り、ウェブの接着信頼性を極めて高いものにすることが
できる。Therefore, when the top surface of the web is bonded to the inner surface of the outer shell molded body on the back side, it becomes possible to directly bond the top surface of the web at a precise position with pressing force applied from the back side. The bonding reliability of can be made extremely high.
【図面の簡単な説明】 第１図は本発明の実施例によるロータブレードの翼断面
で、第２図のＩ−Ｉ矢視図、第２図は同ロータブレード
を背側から見たときの平面図、第３図は上記ロータブレ
ードを有するプロペラ型風車の斜視図である。 ３……ロータ、４……ハブ、５……ブレード、51,52…
…外殻成形体、53……ウェブ、53a……凹状空間、54…
…カバー、56……一方向性の補強繊維テープ、10,11,1
2,13……接着剤、ａ……前縁、ｂ……後縁、ｃ……背、
ｄ……腹。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a blade cross section of a rotor blade according to an embodiment of the present invention, which is a view taken along the line II of FIG. 2, and FIG. 2 is a view of the rotor blade when viewed from the back side. A plan view and FIG. 3 are perspective views of a propeller-type wind turbine having the rotor blade. 3 ... Rotor, 4 ... Hub, 5 ... Blade, 51,52 ...
… Outer shell molded body, 53 …… Web, 53a …… Concave space, 54…
… Covers, 56 …… Unidirectional reinforcing fiber tapes, 10,11,1
2,13 ... Adhesive, a ... Leading edge, b ... Rear edge, c ... Back,
d ... Belly.
Claims (1)
互いに接合した中空構造からなり、前記腹側の外殻成形
体を横断面の中間部に内側に凹状に屈曲したウェブを一
体形成した構造にすると共に、該ウェブの頂面を前記背
側の外殻成形体の内面に接着させ、かつ該ウェブの開口
側を前記腹側の外殻成形体の外面に沿うカバーにより閉
塞したことを特徴とする風車のロータブレード。1. A hollow structure in which a back-side outer shell formed body and an abdominal-side outer shell formed body are joined to each other, and the abdominal-side outer shell formed body is bent inwardly at a middle portion of a cross section. A cover having a structure in which the web is integrally formed, the top surface of the web is adhered to the inner surface of the outer shell molded body on the back side, and the opening side of the web extends along the outer surface of the outer shell molded body on the ventral side. A rotor blade for a wind turbine, which is characterized by being blocked by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61124677A JPH081167B2 (en) | 1986-05-31 | 1986-05-31 | Windmill Rotor Blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61124677A JPH081167B2 (en) | 1986-05-31 | 1986-05-31 | Windmill Rotor Blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62282175A JPS62282175A (en) | 1987-12-08 |
| JPH081167B2 true JPH081167B2 (en) | 1996-01-10 |
Family
ID=14891335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61124677A Expired - Lifetime JPH081167B2 (en) | 1986-05-31 | 1986-05-31 | Windmill Rotor Blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH081167B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4086450B1 (en) * | 2021-05-05 | 2024-09-04 | LM Wind Power A/S | A rotor blade for a wind turbine, a wind turbine, and a method for manufacturing the rotor blade |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK2225458T3 (en) * | 2007-11-14 | 2011-09-19 | Vestas Wind Sys As | Wind turbine blade and a method for producing a wind turbine blade |
| JP5329649B2 (en) * | 2008-05-16 | 2013-10-30 | エクスイーエムシー ダーウィンド ビーブイ | Turbine blade half manufacturing method, turbine blade half, turbine blade manufacturing method, and turbine blade |
-
1986
- 1986-05-31 JP JP61124677A patent/JPH081167B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4086450B1 (en) * | 2021-05-05 | 2024-09-04 | LM Wind Power A/S | A rotor blade for a wind turbine, a wind turbine, and a method for manufacturing the rotor blade |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62282175A (en) | 1987-12-08 |
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