JPH07279819A - Windmill blade and adjustment for its center of gravity - Google Patents
Windmill blade and adjustment for its center of gravityInfo
- Publication number
- JPH07279819A JPH07279819A JP6065976A JP6597694A JPH07279819A JP H07279819 A JPH07279819 A JP H07279819A JP 6065976 A JP6065976 A JP 6065976A JP 6597694 A JP6597694 A JP 6597694A JP H07279819 A JPH07279819 A JP H07279819A
- Authority
- JP
- Japan
- Prior art keywords
- wind turbine
- gravity
- weight
- center
- 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.)
- Withdrawn
Links
- 230000005484 gravity Effects 0.000 description 47
- 239000011347 resin Substances 0.000 description 19
- 229920005989 resin Polymers 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000037221 weight management Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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)
- Wind Motors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数枚の風車ブレード
を組合せ一組にして使用する風車の、各風車ブレードの
バランシングを調整可能にした風車ブレード、およびそ
の重心モーメント調整方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind turbine blade in which a plurality of wind turbine blades are combined and used as one set, and the balancing of the wind turbine blades can be adjusted, and a method of adjusting the center of gravity of the wind turbine blades.
【０００２】[0002]
【従来の技術】図５に示すように、２〜３枚の風車ブレ
ード０１を組合せ一組にして、タワー０２上端に設置
し、１体の風車０１０として、風力発電等に使用される
各風車ブレード０１は、図６に示すように、翼根部０７
から翼端部０８にかけて、言葉を代えていえば、翼幅方
向に、空洞部０４を設けた主桁０５のまわりを外皮０６
で囲み、主桁０５と外皮０６との間に、発泡ウレタン等
の発泡樹脂を充填して、横断面形状を翼形にして形成さ
れている。すなわち、風車ブレード０１の強度部材とし
て主桁０５を、良好な空力特性を得るための外形形成に
外皮０６を、それぞれ使用している。そして、これ等の
風車ブレード０１を軽量にするため、前記主桁０５に空
洞部０４を形成するとともに、これらの素材として、ガ
ラス繊維強化プラスチックが使用され、ほとんど手作業
により製作されている。また、風車ブレード０１は製
作、取付・設置、および稼動時の保守点検を効率化する
ため大型化しており、上記したように軽量化の努力はし
ているものの、１ton を超えるものもある。2. Description of the Related Art As shown in FIG. 5, two or three wind turbine blades 01 are combined into one set and installed on the upper end of a tower 02, and as one wind turbine 010, each wind turbine used for wind power generation or the like. The blade 01, as shown in FIG.
In other words, from the to the wing tip 08, in other words, the outer skin 06 is provided around the main girder 05 provided with the cavity 04 in the wing width direction.
A foamed resin such as urethane foam is filled between the main girder 05 and the outer skin 06 to form a wing-shaped cross section. That is, the main girder 05 is used as the strength member of the wind turbine blade 01, and the outer cover 06 is used for forming the outer shape for obtaining good aerodynamic characteristics. In order to reduce the weight of these wind turbine blades 01, a hollow portion 04 is formed in the main girder 05, and glass fiber reinforced plastic is used as a material thereof, and is manufactured almost by hand. Further, the wind turbine blade 01 has been made large in size in order to make manufacturing, mounting / installation, and maintenance / inspection at the time of operation efficient, and although some efforts have been made to reduce the weight as described above, there are some that exceed 1 ton.
【０００３】これらの理由により、１体の風車０１０に
使用する各風車ブレード０１は、重量Ｗ、重心位置Ｇ１
〜Ｇ３を同一になるように、製作面の配慮はしている
が、現実的には非常に困難で、完成した各風車ブレード
０１の重量、重心位置Ｇ１〜Ｇ３に、バラツキが生じる
のは避けられないことである。For these reasons, each windmill blade 01 used in one windmill 010 has a weight W and a center of gravity position G1.
Although the manufacturing aspects are taken into consideration so that G3 to G3 are the same, in reality, it is extremely difficult to avoid variations in the weight and center of gravity G1 to G3 of each completed wind turbine blade 01. It cannot be done.
【０００４】一方、１体の風車０１０に２〜３枚の風車
ブレード０１を取付け、作動させる場合に、各風車ブレ
ード０１の重量、重心位置Ｇ１〜Ｇ３に差異があると、
回転にアンバランスが生じ、風車０１の作動を悪くする
とともに、風車０１０の発生する動力に変動が生じると
いう不具合がある。On the other hand, when two or three wind turbine blades 01 are attached to and operated by one wind turbine 010, if there are differences in the weight and center of gravity positions G1 to G3 of each wind turbine blade 01,
There is a problem that unbalance occurs in the rotation, the operation of the wind turbine 01 is deteriorated, and the power generated by the wind turbine 010 varies.
【０００５】このため、従来は製作された多数の風車ブ
レード０１の中から、重心モーメントＭ、すなわち、図
７に示すように、風車０１０の回転中心Ｃから、風車ブ
レード０１の重心位置Ｇまでの距離ｌと、風車ブレード
の重量Ｗの積Ｍ＝ｌ×Ｗ、が同一、若しくは許容値内に
納まる風車ブレード０１を選び出し、これ等の風車ブレ
ード０１を組合せて風車０１０を製作し、風車０１０運
転中にアンバランスが発生しない様に、或いは、許容ア
ンバランス量以内になる様にしていた。Therefore, among the many wind turbine blades 01 manufactured conventionally, the center of gravity moment M, that is, from the rotation center C of the wind turbine 010 to the center of gravity position G of the wind turbine blade 01 as shown in FIG. The wind turbine blade 01 is selected such that the product of the distance 1 and the weight W of the wind turbine blade M = l × W is the same or within an allowable value, and the wind turbine 010 is manufactured by combining these wind turbine blades 01 to operate the wind turbine 010. The imbalance was not generated, or was within the allowable imbalance amount.
【０００６】しかし、このような風車製作では、完成し
た風車ブレード０１の製作に長時間を要するばかりでな
く、風車ブレード０１の選択に時間を要する不具合があ
った。また、風車０１０が大型化する程、製作中のウエ
イト管理を厳しくやっていても、風車ブレード０１の、
ウエイトのバラツキは相対的に大きくなり、風車０１０
に取り付ける際の風車ブレード０１組合せも、各風車ブ
レード０１の実測データをもとに、慎重に行う必要があ
り、取付作業に時間がかかるという不具合があった。However, in the production of such a wind turbine, not only it takes a long time to produce the completed wind turbine blade 01, but there is also a problem that it takes time to select the wind turbine blade 01. Further, as the size of the wind turbine 010 becomes larger, even if the weight management during manufacturing is strictly performed,
The variation in weight becomes relatively large and the windmill 010
The combination of the wind turbine blades 01 at the time of installation must be carefully performed based on the measured data of each wind turbine blade 01, and there was a problem that the installation work took time.
【０００７】さらには、この様な風車製作は、同一仕様
の風車を多数設置するウィンドファームの場合に限定さ
れるという不具合もあった。Further, there has been a problem that the production of such a wind turbine is limited to a wind farm in which a large number of wind turbines having the same specifications are installed.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、完成した各
風車ブレード間の重心位置、質量の若干のバラツキに伴
う、上述不具合を解消するため、完成した風車ブレード
の重心モーメントを変えて、風車作動時のアンバランス
が生じないようにした、風車ブレード、および風車ブレ
ード重心モーメント調整方法を提供することを課題とす
る。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems caused by slight variations in the position of the center of gravity and the mass of each completed wind turbine blade, the present invention changes the center of gravity moment of the completed wind turbine blade to change the wind turbine blade's center of gravity. An object of the present invention is to provide a wind turbine blade and a method for adjusting the moment of gravity of the center of gravity of the wind turbine blade, which prevents imbalance during operation.
【０００９】[0009]
【課題を解決するための手段】このため、本発明の風車
ブレードは次の手段とした。 （１）風車ブレードの構造部材として働きをする主桁の
翼根部から、翼端部に向かう翼幅方向に空洞部を設け
た。 （２）各風車ブレードの重量、重心位置のバラツキに応
じて、同一の風車に使用される各風車ブレードの重心モ
ーメントを、略同一にするウエイトを空洞部に配設し
た。 （３）風車ブレードが風車に取付けられ、作動しても、
ウエイトが移動しないようにウエイトを空洞部の所定位
置に固定する発泡樹脂を空洞部内に充填した。また、本
発明の風車ブレード重心モーメント調整方法は、次の手
段を採用した。 （４）主桁の翼幅方向に穿設された空洞部内へ、少なく
とも先端部外周面に送り溝が刻まれた中空状の送入棒を
押し込む工程、 （５）送入棒の先端部に螺合したウエイトを、風車ブレ
ードの製作中に生じた重量、重心位置のバラツキに応じ
て翼幅方向に移動させて、同一の風車に使用される風車
ブレードの重心モーメントを、略同一にする位置に設定
する工程、この工程において、位置の設定は、ウエイト
の重量を変えることによって行っても良い。 （６）位置設定を行ったウエイトの翼端側空洞部、およ
び翼根側空洞部に、送入棒の中空を利用して発泡樹脂を
注入し、発泡樹脂の固化によりウエイトを設定位置に固
定する工程、この工程において、発泡樹脂の注入は、ウ
エイトの翼端側空洞部にまず注入し、ウエイトを仮止め
した後、送入棒先端をウエイトの翼根側空洞部まで後退
させて行うようにしても良く、また送入棒の途中に半径
方向の穴をあけておき、翼端側、翼根側空洞部に同時に
注入するようにしても良い。Therefore, the wind turbine blade of the present invention has the following means. (1) A hollow portion is provided in the blade width direction from the blade root portion of the main girder that functions as a structural member of the wind turbine blade toward the blade tip portion. (2) Weights are provided in the cavity to make the center of gravity moments of the wind turbine blades used for the same wind turbine approximately the same, depending on the weight of each wind turbine blade and the variation in the center of gravity position. (3) Even if the windmill blade is attached to the windmill and activated,
A foamed resin for fixing the weight at a predetermined position in the cavity so that the weight does not move was filled in the cavity. Further, the wind turbine blade gravity center moment adjusting method of the present invention employs the following means. (4) A step of pushing a hollow feed rod having a feed groove engraved at least on the outer peripheral surface of the tip into the cavity formed in the span direction of the main girder, (5) at the tip of the feed rod. A position where the weights that are screwed together are moved in the span direction according to the weight generated during the manufacture of the wind turbine blade and the variation of the center of gravity position, and the center of gravity moments of the wind turbine blades used for the same wind turbine are made approximately the same. The setting step, and the setting of the position in this step may be performed by changing the weight of the weight. (6) The foamed resin is injected into the cavity on the blade tip side and the cavity on the blade root side of which the position is set by using the hollow of the feed rod, and the weight is fixed at the set position by solidification of the foamed resin. In this step, the foamed resin is injected by first injecting it into the blade tip side cavity of the weight, temporarily fixing the weight, and then retracting the tip of the feed rod to the weight blade tip side cavity. Alternatively, a hole in the radial direction may be opened in the middle of the feed rod, and the holes may be simultaneously injected into the blade tip side and blade root side hollow portions.
【００１０】[0010]
【作用】本発明の風車ブレードは、上記（１）〜（３）
の手段により、 （１）完成した風車ブレードに、製作上の多少の重量、
重心のバラツキが生じても、ウエイトの重量、および空
洞部内設置場所の選定により、重心モーメントを略同一
に出来るので、任意の風車ブレードの組合せにより風車
を製作することができる。これにより、風車ブレードの
製作に長時間要することもなく、風車ブレードの選択に
時間を取られることもない。また、風車ブレードの大型
化に伴う重量、重心位置のバラツキの拡がりに対して
も、充分対応できるとともに、少量多品種の風車製作に
も適用でき、完成した風車ブレードを無駄にすることも
なくなる。さらに、重心モーメント調整に伴う風車ブレ
ード重量の増加を若干に留めることができて、円滑な風
車作動を行える。The operation of the wind turbine blade of the present invention includes the above (1) to (3).
By means of (1) the finished wind turbine blade, some weight in the production,
Even if the center of gravity varies, the weight moment and the moment of gravity can be made substantially the same by selecting the installation location in the cavity. Therefore, the wind turbine can be manufactured by combining arbitrary wind turbine blades. As a result, it does not take a long time to manufacture the wind turbine blades, and it does not take time to select the wind turbine blades. Further, it is possible to sufficiently deal with the spread of variations in the weight and the position of the center of gravity due to the increase in size of the wind turbine blade, and it can be applied to the production of a small number of different types of wind turbines, and the completed wind turbine blades are not wasted. Furthermore, the increase in the weight of the wind turbine blade due to the adjustment of the center of gravity moment can be suppressed to a slight extent, and smooth wind turbine operation can be performed.
【００１１】また、他の本発明の風車ブレード重心モー
メント調整方法は、上記（４）〜（６）の手段の採用に
より （２）きわめて、簡単な装置と、簡単な操作により、短
時間で上記（１）の作用を行う風車ブレードが製作でき
る。また、ウエイトの重量選択と空洞部内設定位置の調
整により、１つの風車を形成する任意の風車ブレードの
重心モーメントを自由に設定できるので、既存の風車改
修等にも、容易に採用できる。Another method of adjusting the center of gravity of the center of gravity of the wind turbine blade of the present invention employs the means (4) to (6) described above. (2) It is a very simple device and a simple operation. A wind turbine blade having the function (1) can be manufactured. Further, the weight moment of the weight and the adjustment of the setting position in the cavity can freely set the center of gravity moment of any wind turbine blade forming one wind turbine, so that it can be easily adopted for the existing wind turbine repair or the like.
【００１２】[0012]
【実施例】以下、本発明の風車ブレードの実施例を、図
面にもとづき説明する。図１ないし図４は、本発明の風
車ブレードの一実施例の製作過程を示す図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a wind turbine blade of the present invention will be described below with reference to the drawings. 1 to 4 are views showing a manufacturing process of an embodiment of a wind turbine blade of the present invention.
【００１３】本実施例の風車ブレード１は工場で製作さ
れた、翼幅方向に貫通した空洞部４を設けた主桁３と、
主桁３を包囲して設けた外皮２と、外皮２の内面と主桁
３の外面との間に充填された発泡ウレタン等の発泡樹脂
とからなる。風車ブレード１の構造材を形成する主桁３
は、ガラス繊維を管状に巻きつけて、樹脂で固めたガラ
ス繊維強化プラスチックで形成されている。内部に発泡
樹脂を充填し、主桁３のまわりに翼形の外周面を形成す
る外皮は、熱硬化性樹脂にガラス繊維、若しくは合成無
機質繊維、合成有機繊維、又は金属細線などを充填、積
層した強化プラスチックのシート材で形成されている。
このように、風車ブレード１は鉄鋼に匹敵する強度をも
たせると共に、発泡樹脂の充填物の採用と相俟って、き
わめて比重の小さいものにされている。The wind turbine blade 1 of this embodiment is a factory-made main girder 3 provided with a cavity 4 penetrating in the spanwise direction,
It is composed of an outer skin 2 surrounding the main girder 3 and a foamed resin such as urethane foam filled between the inner surface of the outer girder 2 and the outer surface of the main girder 3. Main girder 3 that forms the structural material of the wind turbine blade 1
Is made of glass fiber reinforced plastic, which is made by winding glass fiber in a tubular shape and hardening it with resin. The outer skin that fills the inside with foamed resin and forms the wing-shaped outer peripheral surface around the main girder 3 is a thermosetting resin filled with glass fibers, synthetic inorganic fibers, synthetic organic fibers, or fine metal wires, and laminated. It is made of reinforced plastic sheet material.
As described above, the wind turbine blade 1 has strength comparable to that of steel and, together with the adoption of the foamed resin filler, has a very small specific gravity.
【００１４】この様にして製作された主桁３の内部に、
図１に示すように、ウエイト５送り込む為の中空の送入
棒６を挿入する。ウエイト５は、外皮２、主桁３が比重
１．５g/cm3 （総重量９４０kg）、発泡樹脂が比重０．
０３g/cm3 （総重量６０kg）であるのに対して、比重
７．８５g/cm 3 程度の鋼鉄で形成されており、風車ブレ
ード１の重量１，０００kgに対する重量比は小さいもの
の、その移動に伴う風車ブレード１の重心位置の移動に
はきわめて大きな影響を及ぼす。そして、あらかじめ計
測された風車ブレード１の重心位置、重量より適当な重
量のウエイト５を準備し、上述の送入棒６の先端部外周
面に刻設した送り溝に螺合させて、空洞部４内を翼幅方
向の所定位置まで送入する。Inside the main girder 3 thus manufactured,
As shown in Fig. 1, a hollow feed for feeding the weight 5
Insert rod 6. Weight 5, outer skin 2 and main girder 3 have specific gravity
1.5g / cm3(Gross weight 940kg), the foamed resin has a specific gravity of 0.
03g / cm3(Gross weight 60kg), but specific gravity
7.85g / cm 3It is made of steel and has a
The weight ratio of the cord 1 to 1,000 kg is small
The movement of the center of gravity of the wind turbine blade 1
Has a huge impact. And in advance
An appropriate weight from the measured center of gravity of the wind turbine blade 1 and its weight.
The weight 5 of the quantity is prepared, and the outer circumference of the tip end portion of the above-mentioned feeding rod 6
By screwing it into the feed groove engraved on the surface,
Send it to the specified position.
【００１５】この送入は、単に送入棒６を空洞部４に押
し込むことによって行っても良く、また送入棒６の回転
により、ウエイト５のみをねじ送りにより押し込むよう
にしても良い。これにより風車ブレード１は、重心位置
が変動する。即ち、風車ブレード１先端側７に送り込ま
れたウエイト５は、風車ブレード１重心位置ｌと質量Ｗ
に作用し、重心モーメントＭを増大させる事が可能とな
る。また、計測された風車ブレード１の重心位置より、
翼根８側にウエイト５をずらすと、重心モーメントＭは
減少させることができる。This feeding may be carried out by simply pushing the feeding rod 6 into the hollow portion 4, or by rotating the feeding rod 6 only the weight 5 may be pushed by screw feeding. As a result, the center of gravity of the wind turbine blade 1 changes. That is, the weight 5 sent to the tip end side 7 of the wind turbine blade 1 has the weight center W of the wind turbine blade 1 and the mass W.
It becomes possible to increase the moment of gravity M of the center of gravity. In addition, from the measured center of gravity of the wind turbine blade 1,
By shifting the weight 5 to the blade root 8 side, the center-of-gravity moment M can be reduced.
【００１６】これにより、若干のバラツキを生じていた
風車ブレード１を、所定の重心モーメントＭを持つ風車
ブレード１、すなわち、１つの風車を形成する２〜３枚
の風車ブレード１を、略同一の重心モーメントを持つ風
車ブレード１にする事が可能となる。As a result, the wind turbine blade 1 having a slight variation is substantially the same as the wind turbine blade 1 having a predetermined moment of gravity M, that is, the two to three wind turbine blades 1 forming one wind turbine. It is possible to use the windmill blade 1 having a moment of gravity.
【００１７】このようにして、所定の重心モーメントＭ
が生じる位置にウエイト５が設置された後、図２に示す
ように送入棒６の中空部を使用して、ウエイト５より翼
先端側７の空洞部４内に、発泡ウレタン等の発泡樹脂９
を発泡器１０を用い注入する。発泡樹脂８は注入時流動
性を有するが、注入後一定の時間経過すると固化するの
で、この固化により、ウエイト５が空洞部４壁に固定さ
れるのを待って、送入棒６を回転させて、ウエイト５と
送入棒６の先端部螺合を解除して、送入棒６の先端をウ
エイト５の翼根８側に移動させ、図３に示すように、翼
根８側空洞部４内に、同様に発泡樹脂８を注入する。In this way, the predetermined moment of gravity M
After the weight 5 is installed at the position where the weight is generated, the hollow portion of the feed rod 6 is used as shown in FIG. 9
Is injected using the foaming device 10. The foamed resin 8 has fluidity at the time of injection, but it solidifies after a certain period of time has passed after the injection, so that the solidification causes the weight 5 to be fixed to the wall of the cavity 4 and then the feed rod 6 is rotated. The weight 5 and the tip of the feed rod 6 are unscrewed to move the tip of the feed rod 6 to the blade root 8 side of the weight 5, and as shown in FIG. In the same manner, the foamed resin 8 is injected into the inside 4.
【００１８】すなわち、翼先端側空洞部４への発泡樹脂
８の注入、固化により風車運転時の風車ブレード１に加
わる遠心力で、ウエイト５が移動しない様に接着固縛さ
れるとともに、翼根８側空洞部４への発泡樹脂８の注
入、固化によりウエイト５の翼根８側への移動が防止で
きる。発泡樹脂８は主桁８、空洞部４の内面に接着し、
ウエイト５が移動不可となる量をあらかじめ算出し、注
入するようにすれば良く、これにより空洞部４内にウエ
イト５が封入、固定され、所定の重心モーメントＭが得
られる。That is, the weight 5 is adhered and fixed so as not to move by the centrifugal force applied to the wind turbine blade 1 during the wind turbine operation by injecting and solidifying the foamed resin 8 into the blade tip side hollow portion 4, and the blade root is also fixed. It is possible to prevent the weight 5 from moving to the blade root 8 side by injecting and solidifying the foamed resin 8 into the 8-side cavity 4. The foamed resin 8 adheres to the main girder 8 and the inner surface of the cavity portion 4,
It is only necessary to calculate in advance the amount by which the weight 5 becomes immovable and to inject it, whereby the weight 5 is enclosed and fixed in the hollow portion 4, and a predetermined center of gravity moment M is obtained.
【００１９】次いで、図４に示すように、送入棒６を空
洞部４内から抜き去って作業が完了する。Next, as shown in FIG. 4, the feeding rod 6 is pulled out from the inside of the hollow portion 4, and the work is completed.
【００２０】なお、注入された発泡樹脂８の比重は前述
したように、ウエイト５の比重に比較して約１／２６０
であり、風車ブレード１の重心モーメントＭに与える影
響は殆ど無視できる程度のものである。The specific gravity of the injected foamed resin 8 is about 1/260 of the specific gravity of the weight 5, as described above.
Therefore, the effect on the center of gravity moment M of the wind turbine blade 1 is almost negligible.
【００２１】このようにして、重心モーメントＭが調整
され、略同一の重心モーメントを持つ２〜３枚の風車ブ
レード１を組みたてることにより、図５に示すような、
風車０１０とすることができる。In this way, the center of gravity moment M is adjusted, and by assembling two or three wind turbine blades 1 having substantially the same center of gravity moment, as shown in FIG.
It can be the windmill 010.
【００２２】[0022]
【発明の効果】以上述べたように、本発明の風車ブレー
ド、および風車ブレード重心モーメント調整方法によれ
ば、特許請求の範囲に示す構成により、完成後の風車ブ
レードの重心モーメントを適宜調整できる。As described above, according to the wind turbine blade and the method for adjusting the center of gravity of the wind turbine blade of the present invention, the center of gravity of the completed wind turbine blade can be appropriately adjusted by the configurations described in the claims.
【００２３】このことにより、従来１つの風車に取付け
られる複数の風車ブレード間にあったバラツキを修正で
き、風車回転時のアンバランスを殆ど無くすることがで
きる。また、風車ブレードの製作時の重量、重心位置の
精度を緩和できるとともに、一つの風車に使用する複数
の風車ブレードの選択、組合せ作業も不用となる。As a result, it is possible to correct the variations that exist between a plurality of wind turbine blades that are conventionally attached to one wind turbine, and it is possible to eliminate almost any unbalance during rotation of the wind turbine. Further, the accuracy of the weight and the position of the center of gravity at the time of manufacturing the wind turbine blade can be alleviated, and selection and combination work of a plurality of wind turbine blades used for one wind turbine becomes unnecessary.
【００２４】また、テスト用等に製作される小規模のウ
ィンドファームに使用される少量の風車ブレードの製
作、又は既存風車の改修等に有効に活用できる。Further, it can be effectively utilized for manufacturing a small amount of wind turbine blades used for a small-scale wind farm manufactured for testing or for repairing an existing wind turbine.
【図１】本発明の風車ブレードの一実施例を示す図で、
ウエイト挿入時の横断面図。FIG. 1 is a view showing an embodiment of a wind turbine blade of the present invention,
The cross-sectional view at the time of inserting the weight.
【図２】発泡樹脂の翼先端側空洞部注入時を示す横断面
図。FIG. 2 is a cross-sectional view showing a state in which foamed resin is injected into the blade tip side cavity portion.
【図３】発泡樹脂の翼根側空洞部注入時を示す横断面
図。FIG. 3 is a cross-sectional view showing a case where a foamed resin is injected into the blade root side cavity portion.
【図４】重心モーメント調整が完了した風車ブレードの
横断面図。FIG. 4 is a cross-sectional view of the wind turbine blade on which the adjustment of the moment of gravity is completed.
【図５】風車の全体図を示す正面図。FIG. 5 is a front view showing an overall view of a wind turbine.
【図６】従来の風車ブレードの斜視図。FIG. 6 is a perspective view of a conventional wind turbine blade.
【図７】風車ブレードの重心モーメントを説明するため
の平面図。FIG. 7 is a plan view for explaining the moment of gravity of the wind turbine blade.
１ 風車ブレード ２ 外皮 ３ 主桁 ４ 空洞部 ５ ウエイト ６ 送入棒 ７ 翼先端 ８ 翼根 ９ 発泡ウレタン １０ 発泡器 1 Windmill Blade 2 Skin 3 Main Girder 4 Cavity 5 Weight 6 Feed Rod 7 Blade Tip 8 Blade Root 9 Foam Urethane 10 Foamer
Claims (2)
設されたタワーの上端に、複数枚を一組にして配設され
動力を発生する風車ブレードにおいて、前記主桁の翼幅
方向に穿設された空洞部と、前記空洞部内に配設され前
記一組の風車ブレードの重心モーメントを略同一にする
ウエイトと、前記空洞部内に充填され前記ウエイトの配
設位置を固定する発泡樹脂とを具えたことを特徴とする
風車ブレード。1. A wind turbine blade, which is formed in a wing shape with an outer skin and a main girder, and which is arranged at the upper end of a tower erected on the ground as a set of a plurality of blades to generate power. A cavity portion bored in the width direction, a weight disposed in the cavity portion and having substantially the same center of gravity moment of the pair of wind turbine blades, and a weight filled in the cavity portion to fix the position where the weight is disposed. A windmill blade characterized by having a foamed resin.
されたタワーの上端に、複数枚を一組にして配設され動
力を発生する風車ブレードの重心モーメント調整方法に
おいて、前記主桁の翼幅方向に穿設された空洞部内へ、
少なくとも、先端部外周面に送り溝が刻設され、内部を
中空にした送入棒を挿入する工程と、前記送入棒に螺合
させたウエイトを翼幅方向に移動させ、前記一組の風車
ブレードの重心モーメントが略同一になる位置に設定す
る工程と、位置設定された前記ウエイトの前方、および
後方に前記挿入棒の中空部を介して、発泡樹脂を注入
し、充填して前記空洞内に固定する工程とからなること
を特徴とする風車ブレード重心モーメント調整方法。2. A method for adjusting the center of gravity of a wind turbine blade, wherein a plurality of blades are formed as a set at the upper end of a tower which is formed in a wing shape with an outer cover and a main girder and is erected on the ground, and which generates power. Into the cavity formed in the span direction of the main girder,
At least, a feed groove is engraved on the outer peripheral surface of the tip portion, a step of inserting a feed rod having a hollow inside, and a weight screwed to the feed rod is moved in the wing width direction, and the set of The step of setting at a position where the center of gravity moments of the wind turbine blades are substantially the same, and the cavity is injected and filled with foamed resin through the hollow portion of the insertion rod in front of and behind the weights that have been positioned. A method of adjusting the moment of gravity of the center of gravity of a wind turbine blade, the method comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6065976A JPH07279819A (en) | 1994-04-04 | 1994-04-04 | Windmill blade and adjustment for its center of gravity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6065976A JPH07279819A (en) | 1994-04-04 | 1994-04-04 | Windmill blade and adjustment for its center of gravity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07279819A true JPH07279819A (en) | 1995-10-27 |
Family
ID=13302552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6065976A Withdrawn JPH07279819A (en) | 1994-04-04 | 1994-04-04 | Windmill blade and adjustment for its center of gravity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07279819A (en) |
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|---|---|---|---|---|
| WO2012019611A3 (en) * | 2010-08-11 | 2012-05-03 | Vestas Wind Systems A/S | Rotor blade for a wind turbine and method of making same |
| KR101222187B1 (en) * | 2011-07-15 | 2013-01-14 | 주식회사 지앤지테크놀러지 | A blade for tidal current power |
| ITCH20120002A1 (en) * | 2012-01-12 | 2013-07-13 | Mediterranean Energy Corp S R L | BALANCING GROUP TO BE INSERTED WITHIN THE WINDOWS THAT CONSTITUTE A SET TO CALITATE ON THE SAME ROTOR |
| KR101368799B1 (en) * | 2012-06-22 | 2014-03-03 | 삼성중공업 주식회사 | Windmill |
| CN106695001A (en) * | 2017-02-16 | 2017-05-24 | 北京金风科创风电设备有限公司 | Slot forming device for blade, blade assembly and processing method for blade |
| CN108561269A (en) * | 2018-03-16 | 2018-09-21 | 沈阳创新华夏机械制造有限公司 | A kind of carbon fiber blade with balance adjusting device |
| JP2019173680A (en) * | 2018-03-29 | 2019-10-10 | 三菱重工業株式会社 | Method for inspecting inside of windmill blade, and inspection device for windmill blade |
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| CN111120200A (en) * | 2019-12-26 | 2020-05-08 | 薛冻 | Efficient wind driven generator blade |
| CN113187675A (en) * | 2021-05-08 | 2021-07-30 | 天津龙嘉科技有限公司 | Method for adjusting dynamic balance of fan blade |
| KR20250067591A (en) | 2023-11-08 | 2025-05-15 | 두산에너빌리티 주식회사 | Blade center of inertia moment measurement jig and method of measuring blade center of inertia moment using it |
-
1994
- 1994-04-04 JP JP6065976A patent/JPH07279819A/en not_active Withdrawn
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012019611A3 (en) * | 2010-08-11 | 2012-05-03 | Vestas Wind Systems A/S | Rotor blade for a wind turbine and method of making same |
| KR101222187B1 (en) * | 2011-07-15 | 2013-01-14 | 주식회사 지앤지테크놀러지 | A blade for tidal current power |
| ITCH20120002A1 (en) * | 2012-01-12 | 2013-07-13 | Mediterranean Energy Corp S R L | BALANCING GROUP TO BE INSERTED WITHIN THE WINDOWS THAT CONSTITUTE A SET TO CALITATE ON THE SAME ROTOR |
| KR101368799B1 (en) * | 2012-06-22 | 2014-03-03 | 삼성중공업 주식회사 | Windmill |
| CN106695001A (en) * | 2017-02-16 | 2017-05-24 | 北京金风科创风电设备有限公司 | Slot forming device for blade, blade assembly and processing method for blade |
| CN106695001B (en) * | 2017-02-16 | 2018-08-14 | 北京金风科创风电设备有限公司 | Slot forming device for a blade, blade assembly and processing method for a blade |
| CN108561269A (en) * | 2018-03-16 | 2018-09-21 | 沈阳创新华夏机械制造有限公司 | A kind of carbon fiber blade with balance adjusting device |
| CN108561269B (en) * | 2018-03-16 | 2024-06-07 | 沈阳创新华夏机械制造有限公司 | Carbon fiber blade with balance adjustment device |
| JP2019173680A (en) * | 2018-03-29 | 2019-10-10 | 三菱重工業株式会社 | Method for inspecting inside of windmill blade, and inspection device for windmill blade |
| US10598608B2 (en) | 2018-03-29 | 2020-03-24 | Mitsubishi Heavy Industries, Ltd. | Method of inspecting interior of wind turbine blade and inspection device for wind turbine blade |
| CN110701004A (en) * | 2019-11-22 | 2020-01-17 | 国电联合动力技术(保定)有限公司 | Counterweight method of wind power blade root counterweight box and counterweight box |
| CN111120200A (en) * | 2019-12-26 | 2020-05-08 | 薛冻 | Efficient wind driven generator blade |
| CN113187675A (en) * | 2021-05-08 | 2021-07-30 | 天津龙嘉科技有限公司 | Method for adjusting dynamic balance of fan blade |
| KR20250067591A (en) | 2023-11-08 | 2025-05-15 | 두산에너빌리티 주식회사 | Blade center of inertia moment measurement jig and method of measuring blade center of inertia moment using it |
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