JP2005113735A - Wind-power equipment - Google Patents

Wind-power equipment Download PDF

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JP2005113735A
JP2005113735A JP2003347213A JP2003347213A JP2005113735A JP 2005113735 A JP2005113735 A JP 2005113735A JP 2003347213 A JP2003347213 A JP 2003347213A JP 2003347213 A JP2003347213 A JP 2003347213A JP 2005113735 A JP2005113735 A JP 2005113735A
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Prior art keywords
blade
tip member
lightning
blade tip
resin
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JP2003347213A
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JP4192744B2 (en
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Yoichi Hashimoto
洋一 橋本
Mitsuharu Harada
光晴 原田
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JFE Engineering Corp
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JFE Engineering Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/30—Lightning protection
    • 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
    • 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

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  • 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)
  • Elimination Of Static Electricity (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind-power equipment excellent in a thunderbolt resistance performance to prevent adequately damage of blades due to the thunderbolt in the wind-power equipment for generating electric power by rotating the blades by means of wind power. <P>SOLUTION: The blade 13 established on a tower 10 standing on the ground comprises a blade body 13a made from fiber-reinforced plastic (FRP) and an aluminum blade point member 21 jointed to a point of the blade body 13a. When the blade point member 21 is subjected to the thunderbolt, thunderbolt currents are led to the earth 24 via lightening conductors 22 and 23. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、タワー上に設けたブレードを風力で回転させて発電する風力発電設備に関するものであり、特に耐雷性能に優れた風力発電設備に関するものである。   The present invention relates to a wind power generation facility that generates power by rotating blades provided on a tower with wind power, and particularly relates to a wind power generation facility with excellent lightning resistance.

ブレードを風力で回転させて発電する風力発電設備は、クリーンエネルギーとして導入が促進されているが、地形上の適地として障害物のない風通しのよい場所に高く設置されることから、ブレード等が雷の目標になりやすい。通常、ブレードは樹脂製の板を整形して製作されており、落雷によってブレードが焼け焦げたり、割れたりして損傷した場合、その修理や交換のために多大な費用と長期間の運転休止が必要となり、甚大な損失を被ることになる。   Wind power generators that generate power by rotating blades with wind power are being promoted as clean energy, but they are installed high in well-ventilated places with no obstructions as topographical sites, so that blades are lightning. It is easy to become a goal. The blade is usually manufactured by shaping a resin plate, and if the blade is burnt or damaged by a lightning strike, it requires a great deal of cost and long-term shutdown to repair or replace it. And suffer a huge loss.

そこで、風力発電設備には、従来から各種の落雷対策が施されている。   Therefore, various countermeasures against lightning strikes have been conventionally applied to wind power generation facilities.

例えば、樹脂製のブレードの先端部付近に金属片を埋め込んで受雷部とし、受雷部への落雷電流を地中に導くようにしたものがある。   For example, there is a type in which a metal piece is embedded near the tip of a resin blade to form a lightning receiving portion, and a lightning current to the lightning receiving portion is guided into the ground.

図４は、その一例であり、（ａ）が正面図、（ｂ）が側面図である。地上に立設したタワー１０と、タワー１０の上部に搭載され、発電機等を内蔵したナセル１１と、ナセル１１で回転自在に軸支されたローター１２と、ローター１２に取り付けられたブレード１４とを備えた風力発電設備において、樹脂製のブレード１４の先端部付近に金属片５１を埋め込んで受雷部とし、金属片５１の受雷部への落雷電流を、ブレード１４内部に配線した避雷導線５２とタワー１０に沿って配線した避雷導線５３を経由して地中のアース５４に導くようにしている。   FIG. 4 is an example thereof, (a) is a front view, and (b) is a side view. A tower 10 erected on the ground, a nacelle 11 mounted on the top of the tower 10 and including a generator, a rotor 12 rotatably supported by the nacelle 11, and a blade 14 attached to the rotor 12 In a wind power generation facility equipped with a lightning conductor, a metal piece 51 is embedded in the vicinity of the tip of a resin blade 14 to form a lightning-receiving portion, and lightning current to the lightning-receiving portion of the metal piece 51 is wired inside the blade 14. 52 and a lightning conductor 53 wired along the tower 10 and led to the ground 54 in the ground.

また、樹脂製のブレードの側方に避雷針を設置して、避雷針に落雷させるようにしたものがある（例えば、特許文献１参照。）。   In addition, there is a lightning rod installed on the side of a resin blade so that the lightning rod strikes it (see, for example, Patent Document 1).

図５は、その一例であり、タワー１０の上部に搭載されたナセル１１に早期ストリーマ発進型避雷針６１を設置したものである。早期ストリーマ発進型避雷針６１から捕捉放電を発進させて雷雲からの放電を捕捉し、避雷針６１へ落雷させて落雷電流を避雷導線６２によって地中に導くことにより、ブレード１４への落雷を回避しようとするものである。
特開２００１−１２３９３４号公報 FIG. 5 shows an example, in which an early streamer start-type lightning rod 61 is installed in the nacelle 11 mounted on the top of the tower 10. An attempt is made to avoid a lightning strike to the blade 14 by launching a trapped discharge from the early streamer starting type lightning rod 61 to catch a discharge from a thundercloud, causing a lightning strike to the lightning rod 61 and guiding the lightning current to the ground by a lightning conductor 62. To do.
JP 2001-123934 A

しかし、樹脂製のブレードの先端部付近に金属片を埋め込んで受雷部としたものでは、必ずしも金属片の受雷部に落雷せずに、それ以外のブレード先端部、特にブレードの刃の部分に落雷することがある。一般にブレードの刃は鋭角であり、落雷しやすい形状になっているからである。そして、金属片の受雷部以外のブレード先端部に落雷すると、樹脂製のブレードは焼損したり、破損したりすることになる。   However, in the case where the lightning is received by embedding a metal piece in the vicinity of the tip of the plastic blade, it does not necessarily strike the lightning receiving part of the metal piece, and the other blade tip, particularly the blade blade part. There may be a lightning strike. This is because the blade generally has an acute angle and is shaped to strike lightning easily. When lightning strikes the blade tip other than the light receiving portion of the metal piece, the resin blade is burnt out or damaged.

また、ブレードの側に避雷針を設置するものでは、常に避雷針に落雷するとは限らず、ブレードに落雷することもある。ブレードの回転に伴って、ブレード先端部が高い位置に位置するようになり、避雷針による避雷保護範囲を越えることもあるからである。そして、樹脂製のブレードの先端部に落雷すると、ブレードは焼損したり、破損したりすることになる。   Further, in the case where a lightning rod is installed on the blade side, lightning is not always applied to the lightning rod, but lightning may occur on the blade. This is because, as the blade rotates, the blade tip is positioned at a high position, which may exceed the lightning protection range by the lightning rod. When lightning strikes the tip of the resin blade, the blade is burned out or damaged.

本発明は、上記の問題点を解決するためになされたものであり、ブレードを風力で回転させて発電する風力発電設備において、落雷によるブレードの損傷を的確に防止することができる耐雷性能に優れた風力発電設備を提供することを目的とするものである。   The present invention has been made to solve the above-described problems, and is excellent in lightning resistance performance capable of accurately preventing damage to the blade due to lightning in a wind power generation facility that generates power by rotating the blade with wind power. The purpose is to provide a wind power generation facility.

上記の課題を解決するために、本発明は以下の特徴を有する。   In order to solve the above problems, the present invention has the following features.

［１］ブレードを風力で回転させて発電する風力発電設備において、前記ブレードが樹脂製のブレード本体と、その先端に接合された導電性金属製のブレード先端部材からなることを特徴とする風力発電設備。   [1] In a wind power generation facility that generates power by rotating a blade with wind power, the blade includes a resin blade body and a conductive metal blade tip member joined to the tip of the resin blade body. Facility.

［２］前記ブレード先端部材への落雷電流を地中に導くようにしたことを特徴とする前記［１］に記載の風力発電設備。   [2] The wind power generation facility according to [1], wherein a lightning current to the blade tip member is guided into the ground.

［３］前記ブレード先端部材はアルミニュウム製又はアルミニュウム合金製であることを特徴とする前記［１］又は［２］に記載の風力発電設備。   [3] The wind turbine generator according to [1] or [2], wherein the blade tip member is made of aluminum or an aluminum alloy.

［４］前記ブレード先端部材は中空構造であることを特徴とする前記［１］〜［３］のいずれかに記載の風力発電設備。   [4] The wind turbine generator according to any one of [1] to [3], wherein the blade tip member has a hollow structure.

［５］前記ブレード先端部材のブレード本体接合部側の端部にアンカー部を突設させ、前記ブレード先端部材とブレード本体とを、両者の接合部に充填した後硬化させる樹脂充填層により接合し、該樹脂充填層内に埋め込まれたアンカー部をブレード先端部材のブレード本体に対するアンカーとして機能させることを特徴とする前記［１］〜［４］のいずれかに記載の風力発電設備。   [5] An anchor portion protrudes from an end of the blade tip member on the blade body joint portion side, and the blade tip member and the blade body are joined together by a resin-filled layer that is filled in the joint portion and then cured. The wind power generation facility according to any one of [1] to [4], wherein the anchor part embedded in the resin-filled layer functions as an anchor for the blade body of the blade tip member.

本発明においては、ブレード先端部を導電性金属で構成しているため、雷はブレード先端部に落雷し、ブレード先端部以外の樹脂製の部分（ブレード本体）に落雷することが回避される。そして、ブレード先端部は金属で構成されているので、ブレード先端部に落雷しても焼損や破損することがない。その結果、落雷によるブレードの損傷を的確に防止することができる。   In the present invention, since the blade tip is made of a conductive metal, lightning strikes the blade tip and avoids a lightning strike on the resin portion (blade body) other than the blade tip. Since the blade tip is made of metal, even if a lightning strikes the blade tip, it will not be burned or damaged. As a result, damage to the blade due to lightning can be prevented accurately.

本発明の一実施形態を、図１〜図３を参照しながら説明する。図１は、この実施形態に係る風力発電設備の全体構成図であり、図２及び図３は、その風力発電設備におけるブレードの説明図である。   An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall configuration diagram of a wind power generation facility according to this embodiment, and FIGS. 2 and 3 are explanatory diagrams of blades in the wind power generation facility.

図１（ａ）に正面図、（ｂ）に側面図を示すように、この実施形態に係る風力発電設備は、地上に立設したタワー１０と、タワー１０の上部に搭載され、発電機等を内蔵したナセル１１と、ナセル１１で回転自在に軸支されたローター１２と、ローター１２に取り付けられたブレード１３とを備えている。   As shown in a front view in FIG. 1 (a) and a side view in FIG. 1 (b), a wind power generation facility according to this embodiment is mounted on a tower 10 standing on the ground and an upper portion of the tower 10, and a generator, etc. , A rotor 12 rotatably supported by the nacelle 11, and a blade 13 attached to the rotor 12.

そして、ブレード１３は、ローター１２に取り付けられたブレード本体２０と、ブレード本体２０の先端に接合されたブレード先端部材２１によって構成されている。ブレード本体２０は、繊維強化樹脂（ＦＲＰ）で製作され、ブレード先端部材２１は導電性金属であるアルミニュウム又はアルミニュウム合金で製作されている。   The blade 13 includes a blade body 20 attached to the rotor 12 and a blade tip member 21 joined to the tip of the blade body 20. The blade body 20 is made of fiber reinforced resin (FRP), and the blade tip member 21 is made of aluminum or aluminum alloy which is a conductive metal.

さらに、ブレード先端部材２１からブレード本体２０の内部を通過してローター１２まで配線された避雷導線２２と、ナセル１１からタワー１０に沿って地中のアース２４まで配線された避雷導線２３と、ローター１２とナセル１１の間に設けたスリップリング２５を備えている。   Furthermore, the lightning conductor 22 routed from the blade tip member 21 through the blade body 20 to the rotor 12, the lightning conductor 23 wired from the nacelle 11 along the tower 10 to the ground 24 in the ground, the rotor 12 and a slip ring 25 provided between the nacelle 11.

なお、通常、タワー１０は鋼構造であるので、タワー１０自体を避雷導線２３の代りに用いることでもよい。また、ローター１２とナセル１１の間にスリップリング２５を設けずに、ローター１２とナセル１１の間は放電によって導電させるようにしてもよい。   In addition, since the tower 10 usually has a steel structure, the tower 10 itself may be used in place of the lightning conductor 23. Further, the slip ring 25 may not be provided between the rotor 12 and the nacelle 11, and the rotor 12 and the nacelle 11 may be made to conduct by discharge.

図２に、ブレード先端部材２１の詳細図を示す。図２（ａ）は、ブレード先端部材２１の構成を示す図であり、図２（ｂ）は、ブレード先端部材２１がブレード本体２０の先端に接合された状態を示す図である。   FIG. 2 shows a detailed view of the blade tip member 21. FIG. 2A is a diagram showing a configuration of the blade tip member 21, and FIG. 2B is a diagram showing a state where the blade tip member 21 is joined to the tip of the blade body 20.

図２（ａ）に示すように、ブレード先端部材２１は、ブレード１３の先端形状を形成する中空構造の外皮部３１と、中空構造の外皮部３１を補強するために外皮部３１の内部に設けられた補強リブ３２を備えている。なお、３３はドレイン孔である。   As shown in FIG. 2A, the blade tip member 21 is provided inside the outer skin portion 31 to reinforce the outer skin portion 31 of the hollow structure that forms the tip shape of the blade 13 and the outer skin portion 31 of the hollow structure. The reinforcing rib 32 is provided. Reference numeral 33 denotes a drain hole.

さらに、ブレード先端部材２１は、ブレード本体２０と接合する側の端部に、接合を強固にするためのアンカー部３４を有している。アンカー部３４は、ブレード本体２０側に向かって広がった末広がり形状の中空の突起である。なお、その内部にも補強リブ３４ａが設けられている。   Further, the blade tip member 21 has an anchor portion 34 for strengthening the joining at the end on the side to be joined with the blade body 20. The anchor portion 34 is a hollow protrusion having a divergent shape that widens toward the blade body 20 side. A reinforcing rib 34a is also provided in the inside.

そして、図２（ｂ）に示すように、ブレード本体２０の先端部分にアンカー部３４を入れ込み、アンカー部３４の周囲に接合用樹脂（レジン）３５を充填させ、その接合用樹脂３５を硬化させることによって、ブレード本体２０とブレード先端部材２１を接合させている。これによって、接合用樹脂３５を充填した層内に埋め込まれたアンカー部３４をブレード先端部材２１のブレード本体２０に対するアンカーとして機能させている。   Then, as shown in FIG. 2B, the anchor portion 34 is inserted into the tip portion of the blade body 20, the bonding resin (resin) 35 is filled around the anchor portion 34, and the bonding resin 35 is cured. As a result, the blade body 20 and the blade tip member 21 are joined. Accordingly, the anchor portion 34 embedded in the layer filled with the bonding resin 35 is caused to function as an anchor for the blade body 20 of the blade tip member 21.

なお、図２（ｂ）に示すように、アンカー部３４の内部の補強リブ３４ａには、避雷導線２２の先端に設けられた避雷導線接続端子２２ａがボルト４１によって取り付けられている。   As shown in FIG. 2B, a lightning conductor connecting terminal 22 a provided at the tip of the lightning conductor 22 is attached to the reinforcing rib 34 a inside the anchor portion 34 with a bolt 41.

上記のように構成したブレード１３を回転させて風力発電を行った場合には、ブレード１３の先端部が導電性金属であるアルミニュウム又はアルミニュウム合金で製作された先端部材２１で構成されているので、雷はブレード先端部材２１に落雷し、樹脂製のブレード本体２０に落雷することが回避される。そして、ブレード先端部材２１は金属で構成されているので、ブレード先端部材２１に落雷しても焼損や破損することがない。ブレード先端部材２１への落雷によって生じた落雷電流は、避雷導線２２、スリップリング２５、避雷導線２３の順に通過して地中のアース２４に導かれる。このようにして、落雷によるブレード１３の損傷を的確に防止することができる。   When wind power generation is performed by rotating the blade 13 configured as described above, the tip portion of the blade 13 is constituted by the tip member 21 made of aluminum or aluminum alloy which is a conductive metal. Lightning strikes the blade tip member 21 and avoids lightning strikes on the resin blade body 20. Since the blade tip member 21 is made of metal, even if a lightning strikes the blade tip member 21, it will not be burned or damaged. A lightning current generated by a lightning strike to the blade tip member 21 passes through the lightning conductor 22, the slip ring 25, and the lightning conductor 23 in this order, and is guided to the ground 24. In this way, damage to the blade 13 due to lightning can be prevented accurately.

そして、ブレード先端部材２１に設けたアンカー部３４を接合用樹脂３５の層内に埋め込むようにしてブレード先端部材２１をブレード本体２０に接合しているので、強固な接合強度を有しており、ブレード１３の回転による遠心力や曲げ応力がかかっても、ブレード本体２０とブレード先端部材２１との接合を維持することができる。   Since the blade tip member 21 is joined to the blade body 20 in such a manner that the anchor portion 34 provided on the blade tip member 21 is embedded in the layer of the joining resin 35, it has a strong joining strength, Even if a centrifugal force or a bending stress is applied due to the rotation of the blade 13, the bonding between the blade body 20 and the blade tip member 21 can be maintained.

なお、導電性金属で構成されたブレード先端部材２１に落雷させるために、ブレード先端部材２１の長さはある程度以上あることが望ましいが、長すぎるとブレード１３全体の重量が重くなるので、例えば、ブレード１３の全長が２５ｍ程度の場合には、ブレード先端部材２１の長さは２００ｍｍ〜２０００ｍｍの範囲にするのが好適である。   In order to cause lightning to strike on the blade tip member 21 made of a conductive metal, it is desirable that the blade tip member 21 has a certain length or more. However, if the blade tip member 21 is too long, the entire weight of the blade 13 becomes heavy. When the total length of the blade 13 is about 25 m, the length of the blade tip member 21 is preferably in the range of 200 mm to 2000 mm.

そして、ブレード先端部材２１を中空構造にすることにより、ブレード１３の全体重量の軽減並びにブレード本体２０とブレード先端部材２１との接合部等にかかる遠心力や曲げ応力の低減を図ることができる。   By making the blade tip member 21 into a hollow structure, it is possible to reduce the overall weight of the blade 13 and reduce the centrifugal force and bending stress applied to the joint between the blade body 20 and the blade tip member 21.

なお、この実施形態においては、ブレード先端部材２１をアルミニューム又はアルミニューム合金で製作しているが、銅、銅合金、鋼等の他の導電性金属で製作することでもよい。   In this embodiment, the blade tip member 21 is made of aluminum or an aluminum alloy, but may be made of other conductive metals such as copper, copper alloy, and steel.

また、ブレード１３の全長が長いとか回転数が大きい等により、ブレード１３の回転による遠心力や曲げ応力が大きくなる場合には、アンカー部を図３に示すようなものにしてもよい。   Further, when the centrifugal force or the bending stress due to the rotation of the blade 13 increases due to the long length of the blade 13 or the high rotation speed, the anchor portion may be as shown in FIG.

すなわち、図３（ａ）に示すように、アンカー部が、ブレード本体２０側に向かって延びる複数本の支持部材３６と、支持材３６の先端にボルト４３とワッシャ４４によって取り付けられた接合補強板３７とからなっている。   That is, as shown in FIG. 3A, the anchor portion has a plurality of support members 36 extending toward the blade body 20 side, and a joint reinforcing plate attached to the tip of the support member 36 by bolts 43 and washers 44. 37.

そして、図３（ｂ）に示すように、ブレード本体２０の先端部分に、支持部材３３と接合補強板３４を入れ込み、支持部材３３と接合補強板３４の周辺に接合用樹脂３５を充填させ、その接合用樹脂３５を硬化させることによって、ブレード本体２０とブレード先端部材２１を接合させている。これによって、接合用樹脂３５を充填した層内に埋め込まれた支持部材３３と接合補強板３４からなるアンカー部が、ブレード先端部材２１のブレード本体２０に対するアンカーとして機能する。このような支持部材３３と接合補強板３４で構成したアンカー部を用いた場合には、図２に示したアンカー部を用いた場合よりもさらに強固な接合強度を有しているので、ブレード１３の回転による遠心力や曲げ応力が大きい場合でも、ブレード先端部材２１とブレード本体２０との接合を確実に維持することができる。   And as shown in FIG.3 (b), the support member 33 and the joining reinforcement board 34 are put in the front-end | tip part of the blade main body 20, and the resin 35 for joining is filled in the periphery of the support member 33 and the joining reinforcement board 34, The blade body 20 and the blade tip member 21 are bonded by curing the bonding resin 35. As a result, the anchor portion composed of the support member 33 and the joining reinforcing plate 34 embedded in the layer filled with the joining resin 35 functions as an anchor for the blade body 20 of the blade tip member 21. When the anchor portion composed of the support member 33 and the joint reinforcing plate 34 is used, the blade 13 has a stronger joint strength than the anchor portion shown in FIG. Even when the centrifugal force or bending stress due to the rotation of the blade is large, the joining of the blade tip member 21 and the blade body 20 can be reliably maintained.

なお、上述の実施形態においては、樹脂製のブレード本体２０の先端に導電性金属製のブレード先端部材２１を接合したブレード１３を用いているが、図４あるいは図５に示したような全体が樹脂製のブレード１４の先端部分に金属板をかぶせることも考えられる。しかし、その場合には、金属板への落雷による衝撃を内側の樹脂製のブレードも受けるため、ブレードが破損したり変形したりする危険性が高い。したがって、樹脂製のブレードの先端部分に金属板をかぶせることでは、落雷によるブレードの損傷を的確に防止することができるとは言い難い。   In the above-described embodiment, the blade 13 in which the conductive metal blade tip member 21 is joined to the tip of the resin blade main body 20 is used. However, as shown in FIG. 4 or FIG. It is also conceivable to cover a metal plate on the tip of the resin blade 14. However, in that case, since the inner resin blade is also subjected to an impact caused by a lightning strike on the metal plate, there is a high risk of the blade being damaged or deformed. Therefore, it is difficult to say that damage to the blade due to lightning can be prevented accurately by covering the tip portion of the resin blade with a metal plate.

本発明の一実施形態における全体構成図である。It is a whole lineblock diagram in one embodiment of the present invention. 本発明の一実施形態におけるブレードの説明図である。It is explanatory drawing of the braid | blade in one Embodiment of this invention. 本発明の一実施形態におけるブレードの他の説明図である。It is other explanatory drawing of the braid | blade in one Embodiment of this invention. 従来技術の説明図である。It is explanatory drawing of a prior art. 他の従来技術の説明図である。It is explanatory drawing of another prior art.

符号の説明Explanation of symbols

１０ タワー
１１ ナセル
１２ ローター
１３ ブレード
１４ ブレード
２０ ブレード本体
２１ ブレード先端部材
２２ 避雷導線
２２ａ 避雷導線接続端子
２３ 避雷導線
２４ アース
２５ スリップリング
３１ 外皮部
３２ 補強リブ
３３ ドレイン孔
３４ アンカー部
３５ 接合用樹脂
３６ 支持部材
３７ 接合補強板
４１ ボルト
４３ ボルト
４４ ワッシャ
５１ 金属片
５２ 避雷導線
５４ アース
６１ 早期ストリーマ発進型避雷針
６２ 避雷導線 DESCRIPTION OF SYMBOLS 10 Tower 11 Nacelle 12 Rotor 13 Blade 14 Blade 20 Blade main body 21 Blade tip member 22 Lightning conductor 22a Lightning conductor connection terminal 23 Lightning conductor 24 Ground 25 Slip ring 31 Skin part 32 Reinforcement rib 33 Drain hole 34 Anchor part 35 Bonding resin 36 Support member 37 Joint reinforcing plate 41 bolt 43 bolt 44 washer 51 metal piece 52 lightning conductor 54 ground 61 early streamer start type lightning rod 62 lightning conductor

Claims (5)

ブレードを風力で回転させて発電する風力発電設備において、前記ブレードが樹脂製のブレード本体と、その先端に接合された導電性金属製のブレード先端部材からなることを特徴とする風力発電設備。   A wind power generation facility for generating power by rotating a blade with wind power, wherein the blade comprises a resin blade main body and a conductive metal blade tip member joined to the tip thereof. 前記ブレード先端部材への落雷電流を地中に導くようにしたことを特徴とする請求項１に記載の風力発電設備。   The wind power generation facility according to claim 1, wherein a lightning current to the blade tip member is guided into the ground. 前記ブレード先端部材はアルミニュウム製又はアルミニュウム合金製であることを特徴とする請求項１又は請求項２に記載の風力発電設備。   The wind turbine generator according to claim 1 or 2, wherein the blade tip member is made of aluminum or an aluminum alloy. 前記ブレード先端部材は中空構造であることを特徴とする請求項１〜３のいずれかに記載の風力発電設備。   The wind turbine generator according to any one of claims 1 to 3, wherein the blade tip member has a hollow structure. 前記ブレード先端部材のブレード本体接合部側の端部にアンカー部を突設させ、前記ブレード先端部材とブレード本体とを、両者の接合部に充填した後硬化させる樹脂充填層により接合し、該樹脂充填層内に埋め込まれたアンカー部をブレード先端部材のブレード本体に対するアンカーとして機能させることを特徴とする請求項１〜４のいずれかに記載の風力発電設備。   An anchor portion protrudes from an end portion of the blade tip member on the blade body joint portion side, and the blade tip member and the blade body are joined together by a resin-filled layer that is filled in the joint portion and then cured. The wind turbine generator according to any one of claims 1 to 4, wherein the anchor portion embedded in the packed bed functions as an anchor for the blade body of the blade tip member.
JP2003347213A 2003-10-06 2003-10-06 Wind power generation equipment Expired - Lifetime JP4192744B2 (en)

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