WO2014033832A1 - Method for protecting blade for wind power generation and blade - Google Patents

Method for protecting blade for wind power generation and blade Download PDF

Info

Publication number
WO2014033832A1
WO2014033832A1 PCT/JP2012/071686 JP2012071686W WO2014033832A1 WO 2014033832 A1 WO2014033832 A1 WO 2014033832A1 JP 2012071686 W JP2012071686 W JP 2012071686W WO 2014033832 A1 WO2014033832 A1 WO 2014033832A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
heat
protection method
film
wind power
Prior art date
Application number
PCT/JP2012/071686
Other languages
French (fr)
Japanese (ja)
Inventor
澤田　貴彦
行平 田中
Original Assignee
株式会社日立製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to PCT/JP2012/071686 priority Critical patent/WO2014033832A1/en
Priority to JP2014532612A priority patent/JP6005749B2/en
Publication of WO2014033832A1 publication Critical patent/WO2014033832A1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • 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
    • 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
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/60—Properties or characteristics given to material by treatment or manufacturing
    • F05B2280/6011—Coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present invention relates to a blade protection method for a wind power generator, a blade protected by the method, and a wind power generator using such a blade.
  • a wing for a wind power generator rotates by receiving wind and converts the rotational energy into electricity.
  • a blade rotates by receiving wind and converts the rotational energy into electricity.
  • it is important to reduce the inertia force by reducing the weight of the blade.
  • the blades of the wind power generator have a total length exceeding 60 m, the weight reduction of the blade leads to the size reduction and weight reduction of the device main body.
  • it is required to design the cross-sectional shape of the blade, maintain its shape, smooth the surface, and maintain it.
  • a lightweight metal material such as an aluminum alloy
  • a fiber reinforced resin composite material (hereinafter referred to as a high-strength and high-rigidity composite material) is required due to a demand for further weight reduction.
  • FRP fiber reinforced resin composite material
  • FRP blades are the mainstream.
  • wind power generators continue to be used and are regularly inspected every one to two years.
  • wind power generators are generally installed in locations where strong winds blow for a long time, and are often installed on coastlines that do not have high buildings or trees in the vicinity, in order to further improve power generation efficiency.
  • the number of large-scale wind power generators on the sea far from the coast is increasing.
  • the water In the vicinity of the coast or on the ocean, in addition to ultraviolet rays and wind and rain caused by sunlight, the water may be affected by salt water, and may collide with birds and birds.
  • problems such as lightning damage occur.
  • it is often installed on land of severe climate. For example, in deserts and the like, the temperature difference between the temperature and the temperature is so intense that it can be affected by sandstorms, and in volcanic areas, it can be affected by corrosive gases and ash.
  • Patent Document 1 a blade protective film for protecting the blade is attached to the surface of the wind power blade as a means that can extend the life of the wind power blade and can be easily repaired.
  • a method is described. In this method, a film-like sheet provided with an adhesive layer is applied to the blade surface to extend the life of the blade by maintaining the appearance and preventing contamination.
  • a protective film provided with such an adhesive layer has a certain effect on the contamination and damage of the FRP blade surface.
  • Patent Document 2 describes a protection method using a coating composition for surface coating that can form a coating film excellent in weather resistance, snow-sliding ice properties and decontamination on the blade surface of a wind power generator. Yes.
  • Patent Document 1 it is not easy to manually remove the protective film from the blade when the protective film is pasted, and the blade needs to be surface treated to further increase the adhesive force, requiring a lot of maintenance work time. It becomes. Further, since the FRP blade, the film-like sheet, and the pressure-sensitive adhesive layer have a difference in thermal expansion coefficient, a shearing force is repeatedly generated in the pressure-sensitive adhesive layer due to temperature fluctuation, and the adhesive force of the protective film is reduced. Furthermore, when a foreign substance enters between the blade surface and the pressure-sensitive adhesive layer, the adhesive strength is locally reduced, and the protective film is peeled off early due to repeated action of wind load and temperature load.
  • Patent Document 2 the painting operation of the blade dramatically increases the painting time and drying time as the size of the blade increases. In addition, a great amount of painting time is required at the time of repair, and the power generator cannot be operated during that time.
  • Another object of the present invention is to provide a blade for a wind power generator in which a protective film can be easily attached and detached and has lightning resistance, weather resistance, and snow / ice resistance, and a wind power generator using the same.
  • the present invention comprises a blade for a wind power generator, a heat-shrinkable film having weather resistance for covering the blade, and at least one functional layer provided between the blade outer surface and the film, and the heat-shrinkable film
  • the blade and the functional layer are integrally covered with a heat shrink film by heating and shrinking and adhering to the blade.
  • the method for protecting a blade for a wind power generator includes a blade for a wind power generator, a heat-shrinkable film having weather resistance covering the blade, and at least one layer provided between the outer surface of the blade and the heat-shrinkable film.
  • the blade for wind power generators of the present invention is excellent in maintainability and can easily obtain lightning resistance, weather resistance, and snow / ice resistance.
  • the protection method of the present invention it is possible to manufacture a blade for a wind power generator that can be easily attached to and detached from the blade of the protective film and is excellent in lightning resistance, weather resistance, and snow and ice resistance.
  • the schematic diagram which shows the wind power generator of this invention The perspective view which shows the braid
  • 2A is a partial cross-sectional view taken along line A-A ′ in FIG. 2A.
  • FIG. 1 is a schematic diagram showing a wind power generator of the present invention.
  • a blade 1 of a wind power generator WP is attached to a rotary shaft 12 and generates power by a power generator (not shown) in a nacelle 13.
  • Reference numeral 14 denotes a tower that supports the nacelle 13.
  • FIG. 2A is a perspective view showing a blade 1 for a wind turbine generator according to Embodiment 1 of the present invention.
  • 2B is a partial cross-sectional view taken along line A-A ′ in FIG. 2A.
  • the blade surface layer 2 of the blade 1 includes a blade base material 10, a first conductive layer 3A as a functional layer, and a heat shrink film 4.
  • a blade usually used for a wind power generator can be used.
  • the blade base material 10 FRP having high strength and high rigidity is often used. In particular, in the case of large wind power generators, FRP blades are the mainstream.
  • the blade substrate 10 is manufactured by a hand lay-up method using a polyester resin or an epoxy resin, a resin impregnation method, a vacuum impregnation method, an autoclave method, or the like.
  • the blade 1 is protected by a heat shrink film 4 which is a heat shrinkable protective film.
  • a heat shrink film 4 which is a heat shrinkable protective film.
  • the term “film” includes a sheet. Therefore, a film is a broad concept including a long form, a roll form wound with a long product, a branch and leaf form, a thick film, and a thin film.
  • the blade 1 When a heat-shrink film is used as the protective film, the blade 1 can be easily fixed by attaching the heat-shrink film 4 to the outer periphery of the blade base material 10 and heating it uniformly with a heating device. it can.
  • the heat shrinkable film 4 when the heat shrinkable film 4 is deteriorated, the heat shrinkable film 4 can be easily exchanged by cutting the heat shrinkable film 4 so as not to damage the blade substrate 10 by any method. . Therefore, compared with the conventional protective film sticking method, the work man-hour at the time of heat shrink film 4 exchange can be reduced significantly.
  • the material used for the heat-shrinkable film 4 is not particularly limited and can be appropriately selected depending on the purpose.
  • examples thereof include polyolefins (for example, low density polyethylene, high density polyethylene, polypropylene, etc.), polyamides ( PA) (for example, nylon-6), polyacetals (POM), polyesters (for example, PET, PEN, PTT, PBT, PPT, PHT, PBN, PES, PBS, etc.), syndiotactic polystyrene (SPS) , Polyphenylene sulfides (PPS), polyether ether ketones (PEEK), liquid crystal polymers (LCP), fluororesins, isotactic polypropylene (isoPP), and the like.
  • polyolefins for example, low density polyethylene, high density polyethylene, polypropylene, etc.
  • PA for example, nylon-6
  • POM polyacetals
  • polyesters for example, PET, PEN, PTT, PBT, P
  • polyolefins polyolefins, polyesters, syndiotactic polystyrene (SPS), and liquid crystal polymers (LCP) are preferable, and polyolefins and polyesters are more preferable from the viewpoints of durability, strength, production, and cost.
  • SPS syndiotactic polystyrene
  • LCP liquid crystal polymers
  • the heat shrink film 4 may be used in a single layer state, or a film obtained by co-extrusion of two or more kinds of heat shrink films having different functions can be used.
  • the heat-shrink film extruded separately can also be laminated
  • the resin material constituting the blade base 10 is deteriorated by ultraviolet rays.
  • a light-shielding function by imparting weather resistance to the heat-shrinkable film 4 or coloring it.
  • various colors by applying various colors, it is possible to impart a decorative effect and the exchange thereof is easy.
  • a technique for imparting light-shielding properties to the heat-shrinkable film for example, there is a method of laminating a light-shielding material containing titanium oxide on the heat-shrinkable film 4 containing an ultraviolet absorber.
  • the heat shrink film 4 is fixed to the blade base material 10 by heat shrink. Therefore, compared with the conventional sticking method, even if an inclusion is present in the middle, there is almost no influence on the fixing force between them.
  • a functional layer having various functions can be positively added between the shrink film 4 and the blade base material 10 by utilizing this feature.
  • the functional layer disposed between the blade base material 10 and the heat shrink film 4 can be given various functions.
  • As a countermeasure against lightning strikes on the blade there is a technology that uses a metal material at the tip of the blade as a lightning receptor and grounds with an electric wire along the main body of the windmill from the inside of the blade.
  • ground faults will not be easy due to the construction of windmills in China. Therefore, in order to improve the lightning resistance of the blade, it is necessary to create a predetermined conductive member on the blade surface.
  • the first conductive layer 3A made of a metal mesh is used.
  • the first conductive layer 3A is disposed between the blade base material 10 and the heat shrinkable film 4, and the heat shrinkable film 4 is shrunk and attached so as to be integrally covered. It is possible to produce the blade 1 having a small work amount.
  • the metal mesh is not particularly limited as long as it is used as a lightning protection sheet for an aircraft. Can be mentioned. By taking such a form, when the blade 1 is subjected to lightning, the metal mesh melts, so that the blade 1 can be discharged into the atmosphere.
  • a heating wire is incorporated in the metal mesh layer of the first conductive layer 3A, and the blade is disposed between the blade base material 10 and the heat shrink film 4 so as to be integrally covered. Snow and ice adhesion can be prevented without applying one additional process.
  • the first conductive layer 3A made of a wiring thin film is disposed at an arbitrary position on the outer surface of the blade, and the heat shrink film is contracted and adhered to cover the same.
  • the damage of the macroscopic blade 1 can be monitored. That is, it is possible to detect that the blade is damaged when the conductive film is made conductive and the conductive film is not made conductive or when the resistance is changed.
  • FIG. 3 shows Example 2 of the present invention, and the first conductive layer 3A and the second conductive layer 3B are disposed between the blade base material 10 and the heat shrink film 4.
  • Each of the first conductive layer 3A and the second conductive layer 3B may have a different function, and two or more types or two or more layers may be provided. That is, the metal mesh, the heating wire, the wiring thin film, and the like described in Example 1 can be arbitrarily combined to form a composite layer.
  • first conductive layer 3A and the second conductive layer 3B can be stretched over the entire blade 1, or each layer may be partially arranged. This is the same when the functional layer is a coal layer.
  • the heat shrinkable film 4 and the blade base material 10 are not directly bonded to each other, even if the materials have different coefficients of thermal expansion, temperature fluctuations occur. It is possible to avoid the occurrence of delamination at the interface between the heat-shrinkable film 4, the blade base material 10, the first conductive layer 3A, and the second conductive layer 3B due to expansion and contraction.
  • the time required for the peeling operation can be greatly shortened.
  • FIG. 4 shows a third embodiment of the present invention, in which the blade base material 10 and the first conductive layer 3A disposed on the blade base material 10 are provided with the seams 5 at appropriate intervals.
  • the shrink film 34 is integrally covered.
  • the unit region of the heat shrink film 34 surrounded by the perforation 5 can be formed in, for example, a square or strip shape of any size, and can be exchanged for each unit.
  • the heat-shrinkable film 4 only in the contaminated or damaged portion only needs to be partially peeled along the perforation 5 and replaced with a new heat-shrinkable film 4 for repair.
  • the blade can be easily repaired on site.
  • the repair heat shrink film 4 is covered with a substantially cylindrical heat shrink film 4 covering the peeled area on the blade base material 10 and fixed by heat shrink. Moreover, you may join the heat shrink film 4 for repair with an adhesive agent.
  • FIG. 5 shows a fourth embodiment of the present invention.
  • the blade surface layer 2 includes a blade base material 10, the first conductive layer 3A, and fine through holes 6 with respect to the thickness direction of the heat-shrinkable film. At least two or more layers of heat-shrinkable films 44 provided randomly are stacked and contracted and adhered to the blade substrate 10. The fine through hole 6 may also be formed by the perforation shown in the third embodiment.
  • Example 4 it is possible to effectively remove the bubbles contained between the blade base material 10 or the first conductive layer 3A disposed on the blade base material 10 and the heat shrink film 44,
  • the protective film construction work at the time of completion of the blade and the re-sticking work at the time of the replacement work in the repair can be avoided. Further, when such fine through holes 6 are continuously provided, they can be used as perforations, and the peeling work in the pasting is simplified.
  • the form of the heat shrink film 44 for packaging the blade 1 is not particularly limited. It is provided in various forms according to the attaching method in which the attaching operation to a large blade is smoothly performed without man-hours. For example, it can be provided in the form of a roll around which a cylindrical, bag-like, or elongated strip-like protective film is wound.
  • thermoshrinkable film 4 is shrunk and attached integrally with the blade base material 10 or the first conductive layer 3A disposed on the blade base material 10 by a heating device such as hot air or steam.
  • FIG. 6 shows a fifth embodiment of the present invention
  • the blade surface layer 2 is composed of a blade base material 10, a first conductive layer 3A, and a heat-shrinkable film 54 in the form of an elongated strip.
  • the film 54 is wound around the outer periphery of the blade base material 10, and the end surfaces of the adjacent belt-shaped heat shrink films 54 are overlapped with each other on the film overlap surface 8.
  • the heat-shrinkable film 54 has an elongated strip shape, and has an effect that the heat-shrinkable film can be easily manufactured and applied to the blade.
  • the protection method according to the present invention is suitable for a blade for a wind power generator, but can also be applied to a nacelle cover for a wind power generator, a spinner cover, and the like, and its application range is not limited thereto.

Abstract

One of the purposes of the present invention is to provide a method for protecting a blade for a wind energy conversion system, said method being capable of ensuring easy attachment of a protective film to the blade and easy removal thereof from the blade and imparting resistances to lighting impulses, weather and accretion of snow and ice to the blade. The other of the purposes thereof is to provide: a blade for a wind energy conversion system, said blade ensuring easy attachment of a protective film to the blade and easy removal thereof from the blade and exhibiting resistances to lighting impulses, weather and accretion of snow and ice; and a wind energy conversion system. The blade according to one embodiment of the present invention is provided with a blade for a wind energy conversion system, a weather-resistant heat-shrink film which covers the blade, and a conductive layer which is disposed between the outer surface of the blade and the film, wherein the blade and the conductive layer are unitedly covered with the film through the shrink and adhesion of the film.

Description

風力発電用ブレードの保護方法およびブレードWind power blade protection method and blade
　本発明は、風力発電装置のブレード保護方法、及びこれにより保護されたブレード、およびかかるブレードを用いた風力発電装置に関する。 The present invention relates to a blade protection method for a wind power generator, a blade protected by the method, and a wind power generator using such a blade.
　風力発電装置用の翼（以下、ブレードと記す）は、風を受けることによって回転し、その回転エネルギーを電気に変換する。風を受けて効率的に回転するためには、ブレードを軽量化して慣性力を低減することが重要である。また、風力発電装置のブレードは全長が６０ｍを超えるものもあるため、ブレードの軽量化は、装置本体の小型化および軽量化につながる。さらに、ブレードが風から受ける力を効率的に回転運動に変換するため、ブレードの断面形状設計及びその形状の維持、表面の平滑性とその維持が求められる。 A wing for a wind power generator (hereinafter referred to as a blade) rotates by receiving wind and converts the rotational energy into electricity. In order to efficiently rotate by receiving wind, it is important to reduce the inertia force by reducing the weight of the blade. In addition, since the blades of the wind power generator have a total length exceeding 60 m, the weight reduction of the blade leads to the size reduction and weight reduction of the device main body. Furthermore, in order to efficiently convert the force that the blade receives from the wind into a rotational motion, it is required to design the cross-sectional shape of the blade, maintain its shape, smooth the surface, and maintain it.
　ブレードを構成する部材としては、従来はアルミニウム合金などの軽量な金属材料が用いられてきたが、近年では、さらなる軽量化の要求から、高強度かつ高剛性である繊維強化樹脂複合材（以下、ＦＲＰと記す）が用いられることが多い。特に、大型風力発電装置の場合、ＦＲＰ製ブレードが主流となっている。 As a member constituting the blade, conventionally, a lightweight metal material such as an aluminum alloy has been used. However, in recent years, a fiber reinforced resin composite material (hereinafter referred to as a high-strength and high-rigidity composite material) is required due to a demand for further weight reduction. FRP) is often used. In particular, in the case of large wind power generators, FRP blades are the mainstream.
　このような風力発電装置は、一度設置されると継続的に使用され続け、１年から２年毎に定期的に点検される程度である。一方、風力発電装置は強い風が長時間吹き続ける場所に設置されるのが一般的であり、周辺に高い建築物や木などがない海岸線に設置されることが多く、さらに発電効率を上げるため、海岸から離れた洋上での大型風力発電装置の建設数が増加している。このような海岸付近あるいは洋上では、太陽光による紫外線、風雨に加え、塩水の影響を受けたり、雹や鳥が衝突したりすることがある。また、ブレード長尺化にともない、落雷による損傷といった不具合も生じる。このほかにも、過酷な気候の土地に設置されることが多い。例えば、砂漠などでは、気温の寒暖の差が激しく強い太陽光を浴び砂嵐の影響を受けることもあり、火山地帯では腐食性ガスや火山灰の影響を受けることもある。 風力 Once installed, such wind power generators continue to be used and are regularly inspected every one to two years. On the other hand, wind power generators are generally installed in locations where strong winds blow for a long time, and are often installed on coastlines that do not have high buildings or trees in the vicinity, in order to further improve power generation efficiency. The number of large-scale wind power generators on the sea far from the coast is increasing. In the vicinity of the coast or on the ocean, in addition to ultraviolet rays and wind and rain caused by sunlight, the water may be affected by salt water, and may collide with birds and birds. In addition, with the increase in blade length, problems such as lightning damage occur. In addition to this, it is often installed on land of severe climate. For example, in deserts and the like, the temperature difference between the temperature and the temperature is so intense that it can be affected by sandstorms, and in volcanic areas, it can be affected by corrosive gases and ash.
　以上のようにブレードは厳しい環境下にさらされるため、長期間の使用により、損傷、変形、表面汚染、表面剥離といった不具合が起こる。このような不具合が生じると、外観不良により電力への変換効率が低下する。また、このような不具合を修復するためには、ブレードを取り外し、地上に下ろした状態で補修作業を行う必要があり、この間風力発電装置は発電することができない。そのため、補修は短時間で行わなければならない。 As described above, since the blade is exposed to a harsh environment, problems such as damage, deformation, surface contamination, and surface peeling occur after long-term use. When such a malfunction occurs, the conversion efficiency into electric power decreases due to the appearance failure. Further, in order to repair such a problem, it is necessary to perform repair work in a state where the blade is removed and lowered to the ground, and the wind power generator cannot generate power during this period. Therefore, repairs must be done in a short time.
　ブレード保護に関する背景技術として、特許文献１には、風力発電用ブレードの寿命を延長でき、かつ補修が容易な手段として、風力発電用ブレードの表面に、ブレードを保護するブレード用保護フィルムを貼付する方法が記載されている。この方法は、粘着剤層を備えたフィルム状のシートをブレード表面に貼付することにより、ブレードの外観維持や汚染防止による寿命を延長しようとするものである。このような粘着剤層を備えた保護フィルムは、ＦＲＰ製ブレード表面部の汚染や損傷には一定の効果が得られる。 As a background art relating to blade protection, in Patent Document 1, a blade protective film for protecting the blade is attached to the surface of the wind power blade as a means that can extend the life of the wind power blade and can be easily repaired. A method is described. In this method, a film-like sheet provided with an adhesive layer is applied to the blade surface to extend the life of the blade by maintaining the appearance and preventing contamination. A protective film provided with such an adhesive layer has a certain effect on the contamination and damage of the FRP blade surface.
　また、特許文献２には、風力発電機のブレード表面に、耐候性に優れ、かつ滑雪氷性と汚染除去性に優れた塗膜を形成できる表面塗布用塗料組成物による保護方法が記載されている。 Patent Document 2 describes a protection method using a coating composition for surface coating that can form a coating film excellent in weather resistance, snow-sliding ice properties and decontamination on the blade surface of a wind power generator. Yes.
特開２０１１－５２６８３号公報JP 2011-52683 A 特開２０１１－２１９６５３号公報JP 2011-219653 A
　しかしながら、特許文献１においては、保護フィルムを貼り替える際に人力で保護フィルムをブレードから剥がすことが容易でなく、さらに粘着力を上げるためにブレードの表面処理が必要となり多大なメンテナンス作業時間が必要となる。また、ＦＲＰ製ブレード、フィルム状シート、および粘着剤層は熱膨張係数差があるため、温度変動により粘着剤層に繰り返しせん断力が発生し、保護フィルムの粘着力が低下する。さらに、ブレード表面と粘着剤層との間に異物が入り込むと局所的に粘着強度が低下し、風荷重や温度荷重の繰り返し作用により早期に保護フィルムがはく離する。 However, in Patent Document 1, it is not easy to manually remove the protective film from the blade when the protective film is pasted, and the blade needs to be surface treated to further increase the adhesive force, requiring a lot of maintenance work time. It becomes. Further, since the FRP blade, the film-like sheet, and the pressure-sensitive adhesive layer have a difference in thermal expansion coefficient, a shearing force is repeatedly generated in the pressure-sensitive adhesive layer due to temperature fluctuation, and the adhesive force of the protective film is reduced. Furthermore, when a foreign substance enters between the blade surface and the pressure-sensitive adhesive layer, the adhesive strength is locally reduced, and the protective film is peeled off early due to repeated action of wind load and temperature load.
　また、特許文献２において、ブレードの塗装作業は、ブレードの大型化に伴い飛躍的に塗装時間と乾燥時間が増加する。また、補修時においても多大な塗装時間を要し、その間発電装置を稼働させることができない。 Also, in Patent Document 2, the painting operation of the blade dramatically increases the painting time and drying time as the size of the blade increases. In addition, a great amount of painting time is required at the time of repair, and the power generator cannot be operated during that time.
　本発明は、風力発電装置用のブレードに、保護フィルムの着脱が容易でありかつ耐雷性、耐候性、耐雪氷性等の付加機能を付与できる風力発電装置用のブレード保護方法を提供することを目的とする。 It is an object of the present invention to provide a blade protection method for a wind turbine generator that can easily attach and detach a protective film to a blade for a wind turbine generator and can add additional functions such as lightning resistance, weather resistance, and snow / ice resistance. Objective.
　また、本発明は、保護フィルムの着脱が容易であり、耐雷性、耐候性、耐雪氷性を有する風力発電装置用のブレードおよびこれを用いた風力発電装置を提供することを目的とする。 Another object of the present invention is to provide a blade for a wind power generator in which a protective film can be easily attached and detached and has lightning resistance, weather resistance, and snow / ice resistance, and a wind power generator using the same.
　本発明は、風力発電装置用のブレードと、ブレードを被覆する耐候性を持つ熱収縮フィルムと、ブレード外表面とフィルムとの間に設けた少なくとも１層の機能性層とを備え、熱収縮フィルムを加熱してブレードに収縮付着することによって、ブレードと前記機能性層とを熱収縮フィルムにより一体的に被覆することを特徴とする。 The present invention comprises a blade for a wind power generator, a heat-shrinkable film having weather resistance for covering the blade, and at least one functional layer provided between the blade outer surface and the film, and the heat-shrinkable film The blade and the functional layer are integrally covered with a heat shrink film by heating and shrinking and adhering to the blade.
　本発明の風力発電装置用ブレードの保護方法は、風力発電装置用のブレードと、ブレードを被覆する耐候性を持つ熱収縮フィルムと、ブレード外表面と熱収縮フィルムとの間に設けた少なくとも１層の機能性層とを備え、熱収縮フィルムを加熱してブレードに収縮付着することによって、ブレードと機能性層とを熱収縮フィルムにより一体的に被覆することにより、熱収縮フィルムからなる保護フィルムのブレードへの着脱が容易でありメンテナンス性に優れ、ブレードに耐雷性、耐候性、耐雪氷性等の付加機能を容易に付与することができる。また、本発明の風力発電装置用ブレードは、メンテナンス性に優れ、容易に耐雷性、耐候性、耐雪氷性を得ることができる。 The method for protecting a blade for a wind power generator according to the present invention includes a blade for a wind power generator, a heat-shrinkable film having weather resistance covering the blade, and at least one layer provided between the outer surface of the blade and the heat-shrinkable film. A protective film made of a heat-shrinkable film by covering the blade and the functional layer integrally with the heat-shrinkable film. It is easy to attach to and detach from the blade, has excellent maintainability, and can easily impart additional functions such as lightning resistance, weather resistance, snow and ice resistance to the blade. Moreover, the blade for wind power generators of the present invention is excellent in maintainability and can easily obtain lightning resistance, weather resistance, and snow / ice resistance.
　さらに、本発明の保護方法によれば、保護フィルムのブレードへの着脱が容易であり、耐雷性、耐候性、耐雪氷性に優れる風力発電装置用のブレードを製造することができる。 Furthermore, according to the protection method of the present invention, it is possible to manufacture a blade for a wind power generator that can be easily attached to and detached from the blade of the protective film and is excellent in lightning resistance, weather resistance, and snow and ice resistance.
本発明の風力発電装置を示す模式図。The schematic diagram which shows the wind power generator of this invention. 本発明の実施例１の風力発電装置用ブレードを示す斜視図。The perspective view which shows the braid | blade for wind power generators of Example 1 of this invention. 図２ＡにおけるＡ－Ａ’部分断面図。2A is a partial cross-sectional view taken along line A-A ′ in FIG. 2A. 本発明の実施例２の風力発電装置用ブレードを示す部分断面図。The fragmentary sectional view which shows the blade for wind power generators of Example 2 of this invention. 本発明の実施例３のブレードの一部分を示す斜視図。The perspective view which shows a part of braid | blade of Example 3 of this invention. 本発明の実施例４の風力発電装置用ブレードを示す部分断面図。The fragmentary sectional view which shows the blade for wind power generators of Example 4 of this invention. 本発明の実施例５の風力発電装置用ブレードを示す部分断面図。The fragmentary sectional view which shows the blade for wind power generators of Example 5 of this invention.
　以下、本発明の複数の実施例を複数の図を用いて説明する。図１は、本発明の風力発電装置を示す模式図である。図１において、風力発電装置ＷＰのブレード１は回転軸１２に取付けられ、ナセル１３内の図示しない発電装置により発電を行う。１４はナセル１３を支持するタワーである。 Hereinafter, a plurality of embodiments of the present invention will be described with reference to a plurality of drawings. FIG. 1 is a schematic diagram showing a wind power generator of the present invention. In FIG. 1, a blade 1 of a wind power generator WP is attached to a rotary shaft 12 and generates power by a power generator (not shown) in a nacelle 13. Reference numeral 14 denotes a tower that supports the nacelle 13.
　図２Ａは本発明の実施例１に係る風力発電装置用のブレード１を示す斜視図である。図２Ｂは、図２ＡにおけるＡ－Ａ’部分断面図である。ブレード１のブレード表面層２は、図２Ｂに示すように、ブレード基材１０と、機能性層としての第１導電層３Ａと、熱収縮フィルム４から構成されている。本発明に係るブレードとして、風力発電機に通常使用されるブレードを使用することができる。ブレード基材１０としては、高強度かつ高剛性であるＦＲＰが用いられることが多い。特に、大型風力発電装置の場合には、ＦＲＰ製ブレードが主流となっている。 FIG. 2A is a perspective view showing a blade 1 for a wind turbine generator according to Embodiment 1 of the present invention. 2B is a partial cross-sectional view taken along line A-A ′ in FIG. 2A. As shown in FIG. 2B, the blade surface layer 2 of the blade 1 includes a blade base material 10, a first conductive layer 3A as a functional layer, and a heat shrink film 4. As the blade according to the present invention, a blade usually used for a wind power generator can be used. As the blade base material 10, FRP having high strength and high rigidity is often used. In particular, in the case of large wind power generators, FRP blades are the mainstream.
　ブレード基材１０は、ポリエステル樹脂やエポキシ樹脂を用いたハンドレイアップ法、樹脂含浸法、真空含浸法、オートクレーブ法等によって製造される。 The blade substrate 10 is manufactured by a hand lay-up method using a polyester resin or an epoxy resin, a resin impregnation method, a vacuum impregnation method, an autoclave method, or the like.
　ブレード１は、熱収縮性をもつ保護フィルムである熱収縮フィルム４によって保護される。本発明においてフィルムという場合にはシートを包含する。したがって、フィルムとは、長尺形態、長尺品を巻き取ったロール形態、枝葉形態、厚いフィルム、薄いフィルムを含む広い概念である。 The blade 1 is protected by a heat shrink film 4 which is a heat shrinkable protective film. In the present invention, the term “film” includes a sheet. Therefore, a film is a broad concept including a long form, a roll form wound with a long product, a branch and leaf form, a thick film, and a thin film.
　保護フィルムとして熱収縮フィルムを使用する場合は、ブレード１への装着は、熱収縮フィルム４をブレード基材１０外周に装着して、加熱装置により均一に加熱することにより、容易に固定することができる。 When a heat-shrink film is used as the protective film, the blade 1 can be easily fixed by attaching the heat-shrink film 4 to the outer periphery of the blade base material 10 and heating it uniformly with a heating device. it can.
　また、熱収縮フィルム４の劣化時にこれを交換する際は、任意の方法でブレード基材１０を傷つけないように熱収縮フィルム４を切断すれば、容易に熱収縮フィルム４を交換することができる。従って、従来の保護フィルム貼付方法と比較して、熱収縮フィルム４交換時の作業工数を大幅に低減することができる。 In addition, when the heat shrinkable film 4 is deteriorated, the heat shrinkable film 4 can be easily exchanged by cutting the heat shrinkable film 4 so as not to damage the blade substrate 10 by any method. . Therefore, compared with the conventional protective film sticking method, the work man-hour at the time of heat shrink film 4 exchange can be reduced significantly.
　熱収縮フィルム４に用いられる材料としては、特段の制限はなく、目的に応じて適宜選択することができ、例えば、ポリオレフィン類（例えば、低密度ポリエチレン、高密度ポリエチレン、ポリプロピレンなど）、ポリアミド類（ＰＡ）（例えば、ナイロン－６など）、ポリアセタール類（ＰＯＭ）、ポリエステル類（例えば、ＰＥＴ、ＰＥＮ、ＰＴＴ、ＰＢＴ、ＰＰＴ、ＰＨＴ、ＰＢＮ、ＰＥＳ、ＰＢＳなど）、シンジオタクチック・ポリスチレン（ＳＰＳ）、ポリフェニレンサルファイド類（ＰＰＳ）、ポリエーテルエーテルケトン類（ＰＥＥＫ）、液晶ポリマー類（ＬＣＰ）、フッ素樹脂、アイソタクティックポリプロピレン(ｉｓｏＰＰ)などが挙げられる。その中でも、耐久性、強度、製造およびコストの観点から、ポリオレフィン類、ポリエステル類、シンジオタクチック・ポリスチレン（ＳＰＳ）、液晶ポリマー類（ＬＣＰ）が好ましく、ポリオレフィン類、ポリエステル類がより好ましい。 The material used for the heat-shrinkable film 4 is not particularly limited and can be appropriately selected depending on the purpose. Examples thereof include polyolefins (for example, low density polyethylene, high density polyethylene, polypropylene, etc.), polyamides ( PA) (for example, nylon-6), polyacetals (POM), polyesters (for example, PET, PEN, PTT, PBT, PPT, PHT, PBN, PES, PBS, etc.), syndiotactic polystyrene (SPS) , Polyphenylene sulfides (PPS), polyether ether ketones (PEEK), liquid crystal polymers (LCP), fluororesins, isotactic polypropylene (isoPP), and the like. Among these, polyolefins, polyesters, syndiotactic polystyrene (SPS), and liquid crystal polymers (LCP) are preferable, and polyolefins and polyesters are more preferable from the viewpoints of durability, strength, production, and cost.
　これらのうち、２種以上のポリマーをブレンドしたり、共重合させたりして使用してもよい。また、熱収縮フィルム４は単一層の状態で用いてもよく、また、それぞれ機能が異なる２種類以上の熱収縮フィルムを共押し出し加工したものを用いることもできる。また、別々に押し出し加工した熱収縮フィルムを積層することもできる。 Of these, two or more polymers may be blended or copolymerized. Moreover, the heat shrink film 4 may be used in a single layer state, or a film obtained by co-extrusion of two or more kinds of heat shrink films having different functions can be used. Moreover, the heat-shrink film extruded separately can also be laminated | stacked.
　ブレード基材１０を構成する樹脂材料は、紫外線により劣化することが知られている。ブレード基材１０を紫外線から保護するため、熱収縮フィルム４に耐候性を付与したり、着色したりすることによって遮光機能を付加することができる。また、種々の着色を施すことにより、装飾効果も付与することが可能であり、その交換も容易である。熱収縮フィルムに遮光性を付与する技術として、例えば、紫外線吸収剤を含む熱収縮フィルム４に酸化チタンを含有する遮光性材料を積層する方法がある。 It is known that the resin material constituting the blade base 10 is deteriorated by ultraviolet rays. In order to protect the blade base material 10 from ultraviolet rays, it is possible to add a light-shielding function by imparting weather resistance to the heat-shrinkable film 4 or coloring it. In addition, by applying various colors, it is possible to impart a decorative effect and the exchange thereof is easy. As a technique for imparting light-shielding properties to the heat-shrinkable film, for example, there is a method of laminating a light-shielding material containing titanium oxide on the heat-shrinkable film 4 containing an ultraviolet absorber.
　熱収縮フィルム４はブレード基材１０に熱収縮により固定されている。従って、従来の貼付方法と比較して、中間に介在物が存在しても両者の固着力には殆ど影響を与えない。 The heat shrink film 4 is fixed to the blade base material 10 by heat shrink. Therefore, compared with the conventional sticking method, even if an inclusion is present in the middle, there is almost no influence on the fixing force between them.
　従って、この特徴を利用して収縮フィルム４とブレード基材１０の間に各種の機能を有する機能性層を積極的に付加することができる。 Therefore, a functional layer having various functions can be positively added between the shrink film 4 and the blade base material 10 by utilizing this feature.
　ブレード基材１０と熱収縮フィルム４の間に配置する機能性層には、種々の機能を与えることが可能である。ブレードの落雷対策としてブレード先端に備えた金属材をライトニングレセプターとして、ブレード内部から風車本体に沿わせた電線で地絡させる技術があるが、風車の大型化に伴う電線延長による重量増や、洋上での風車建設により地絡が容易ではなくなるという課題がある。そのため、ブレードの耐雷性を向上させるため、ブレード表面に所定の導電部材を作りこむ必要があるが、ＦＲＰからなるブレード本体を追加工することは容易ではなく、また、それに伴う変更や補修も容易ではない。 The functional layer disposed between the blade base material 10 and the heat shrink film 4 can be given various functions. As a countermeasure against lightning strikes on the blade, there is a technology that uses a metal material at the tip of the blade as a lightning receptor and grounds with an electric wire along the main body of the windmill from the inside of the blade. There is a problem that ground faults will not be easy due to the construction of windmills in China. Therefore, in order to improve the lightning resistance of the blade, it is necessary to create a predetermined conductive member on the blade surface. However, it is not easy to additionally process the blade body made of FRP, and it is easy to make changes and repairs accordingly. is not.
　これに対し金属メッシュからなる第１導電層３Ａを用い、ブレード基材１０と熱収縮フィルム４との間に配置し、熱収縮フィルム４を収縮付着せしめて一体に被覆することで、耐雷性を有するブレード１を少ない作業量で作製することができる。金属メッシュは、航空機の耐雷材シートとして用いられるようなものであれば特に限定されることはなく、銅、黄銅、アルミニウム、ニッケル、スチール、ステンレススチール等からなる金属線をメッシュ状にしたものが挙げられる。このような形態をとることで、ブレード１が被雷した際、金属メッシュが溶融するためブレード１から大気中に放電させることができる。 On the other hand, the first conductive layer 3A made of a metal mesh is used. The first conductive layer 3A is disposed between the blade base material 10 and the heat shrinkable film 4, and the heat shrinkable film 4 is shrunk and attached so as to be integrally covered. It is possible to produce the blade 1 having a small work amount. The metal mesh is not particularly limited as long as it is used as a lightning protection sheet for an aircraft. Can be mentioned. By taking such a form, when the blade 1 is subjected to lightning, the metal mesh melts, so that the blade 1 can be discharged into the atmosphere.
　また、寒冷地に設置された風力発電装置においては、雪や氷がブレード１に付着し、風の抵抗値の増加により風車効率や発電効率が低下するという問題がある。このような雪氷付着を防ぐ手段として、ブレード１にヒーターなどの発熱体を組み込む手法が効果的であるが、部品の追加工や据付けとなどの作業量が多大となる。 Also, in the wind power generator installed in a cold region, there is a problem that snow and ice adhere to the blade 1 and wind turbine efficiency and power generation efficiency are reduced due to an increase in wind resistance. As a means for preventing such adhesion of snow and ice, a method of incorporating a heating element such as a heater into the blade 1 is effective, but the amount of work such as additional machining and installation of parts becomes large.
　この場合、実施例１の応用例として、第１導電層３Ａの金属メッシュ層に発熱線を組み込み、ブレード基材１０と熱収縮フィルム４との間に配置して一体に被覆することで、ブレード１の追加工を施すことなく雪氷付着を防止することができる。 In this case, as an application example of the first embodiment, a heating wire is incorporated in the metal mesh layer of the first conductive layer 3A, and the blade is disposed between the blade base material 10 and the heat shrink film 4 so as to be integrally covered. Snow and ice adhesion can be prevented without applying one additional process.
　また、風力発電装置の稼働時、および停止時には、雹、小石、および鳥等がブレード１に衝突することがあり、ブレード１の表面にき裂が生じたり、ブレード基材１０２が層間はく離を起こしたりすることがある。このような損傷を放置しておくと、風荷重によってブレード１が曲げモーメントを受けたときに、損傷部が圧縮荷重を受けて座屈する可能性がある。 In addition, when the wind power generator is in operation and when it is stopped, spiders, pebbles, birds, and the like may collide with the blade 1, causing a crack on the surface of the blade 1 and causing the blade base material 102 to delaminate. Sometimes. If such damage is left unattended, when the blade 1 receives a bending moment due to wind load, the damaged part may be buckled by receiving a compressive load.
　このような損傷を検知するために、加速度センサをブレードに貼りつけ運転時のブレードの挙動変化を監視する技術や、光ファイバセンサ、ひずみセンサによりブレードの変形量を検知する技術がある。いずれの技術についても、局所的な変化について検知することができるといえるが、ブレード１のすべてに渡って巨視的に損傷の有無を判断することは容易ではない。 In order to detect such damage, there are technologies for attaching an acceleration sensor to the blade and monitoring the behavior change of the blade during operation, and technologies for detecting the deformation amount of the blade using an optical fiber sensor and a strain sensor. Although it can be said that any technique can detect a local change, it is not easy to macroscopically determine the presence or absence of damage over the entire blade 1.
　これに対して、実施例１の他の応用例として、配線薄膜からなる第１導電層３Ａをブレード外表面における任意の位置に配置し、熱収縮フィルムを収縮付着せしめて一体に被覆することで、巨視的なブレード１の損傷をモニタリングすることができる。すなわち配線薄膜に導通を行い、導通しない場合或いはその抵抗変化により薄膜が断線する程度の損傷がブレードに生じていることを検知することができる。 On the other hand, as another application example of the first embodiment, the first conductive layer 3A made of a wiring thin film is disposed at an arbitrary position on the outer surface of the blade, and the heat shrink film is contracted and adhered to cover the same. The damage of the macroscopic blade 1 can be monitored. That is, it is possible to detect that the blade is damaged when the conductive film is made conductive and the conductive film is not made conductive or when the resistance is changed.
　図３は、本発明の実施例２を示したものであり、ブレード基材１０と、熱収縮フィルム４との間に、第１導電層３Ａと第２導電層３Ｂが配置される。第１導電層３Ａ、第２導電層３Ｂはそれぞれが異なる機能を持っていてもよく、２種類以上あるいは２層以上設けてもよい。即ち、実施例１に挙げた金属メッシュ、発熱線、配線薄膜等を任意に組み合わせて複合層として形成する事ができる。 FIG. 3 shows Example 2 of the present invention, and the first conductive layer 3A and the second conductive layer 3B are disposed between the blade base material 10 and the heat shrink film 4. Each of the first conductive layer 3A and the second conductive layer 3B may have a different function, and two or more types or two or more layers may be provided. That is, the metal mesh, the heating wire, the wiring thin film, and the like described in Example 1 can be arbitrarily combined to form a composite layer.
　また、ブレード１全体にわたって第１導電層３Ａ、第２導電層３Ｂを張り巡らせることもできるし、各層を部分的に配置してもよい。これは機能性層が炭層の場合も同様である。 Further, the first conductive layer 3A and the second conductive layer 3B can be stretched over the entire blade 1, or each layer may be partially arranged. This is the same when the functional layer is a coal layer.
　このような熱収縮フィルム４と、ブレード基材１０、第１導電層３Ａ、第２導電層３Ｂとは、それぞれが直接接着されていないため、熱膨張係数が各々異なる材料であっても温度変動による膨張、収縮に起因する熱収縮フィルム４と、ブレード基材１０と、第１導電層３Ａ、第２導電層３Ｂの界面におけるはく離の発生を避けることができる。 Since the heat shrinkable film 4 and the blade base material 10, the first conductive layer 3A, and the second conductive layer 3B are not directly bonded to each other, even if the materials have different coefficients of thermal expansion, temperature fluctuations occur. It is possible to avoid the occurrence of delamination at the interface between the heat-shrinkable film 4, the blade base material 10, the first conductive layer 3A, and the second conductive layer 3B due to expansion and contraction.
　さらに、ブレード基材１０、第１導電層３Ａ、第２導電層３Ｂを傷つけることなく、容易に、かつ完全に分離することができるため、剥離作業にかかる時間を大幅に短縮することができる。 Furthermore, since it can be easily and completely separated without damaging the blade base material 10, the first conductive layer 3A, and the second conductive layer 3B, the time required for the peeling operation can be greatly shortened.
　図４は、本発明の実施例３を示したものであり、ブレード基材１０と、ブレード基材１０上に配置した第１導電層３Ａとが、適当な間隔でシン目５を設けた熱収縮フィルム３４によって一体に被覆されている。ミシン目５で囲まれる熱収縮フィルム３４の単位領域は、例えば任意のサイズの正方形、または短冊形に形成する事ができ、この単位毎に交換することができる。 FIG. 4 shows a third embodiment of the present invention, in which the blade base material 10 and the first conductive layer 3A disposed on the blade base material 10 are provided with the seams 5 at appropriate intervals. The shrink film 34 is integrally covered. The unit region of the heat shrink film 34 surrounded by the perforation 5 can be formed in, for example, a square or strip shape of any size, and can be exchanged for each unit.
　本実施例の効果としては、汚染または損傷を受けた部分のみの熱収縮フィルム４をミシン目５に沿って部分的に剥離し新しいリペア用の熱収縮フィルム４と貼り替えるだけでよいため、設置現場でもブレードの補修が容易となる。リペア用の熱収縮フィルム４は、剥離領域をカバーするほぼ円筒形熱収縮フィルム４をブレード基材１０に被せて、熱収縮により固定する。またリペア用の熱収縮フィルム４を接着剤で接合しても良い。 As an effect of the present embodiment, the heat-shrinkable film 4 only in the contaminated or damaged portion only needs to be partially peeled along the perforation 5 and replaced with a new heat-shrinkable film 4 for repair. The blade can be easily repaired on site. The repair heat shrink film 4 is covered with a substantially cylindrical heat shrink film 4 covering the peeled area on the blade base material 10 and fixed by heat shrink. Moreover, you may join the heat shrink film 4 for repair with an adhesive agent.
　図５は、本発明の実施例４を示したものであり、ブレード表面層２は、ブレード基材１０と、第１導電層３Ａと、熱収縮フィルムの厚さ方向に対して微細貫通孔６をランダムに設けた熱収縮フィルム４４を少なくとも２層以上重ねて、ブレード基材１０に収縮付着せしめた構成をとる。微細貫通孔６はまた、実施例３に示すミシン目で構成しても良い。 FIG. 5 shows a fourth embodiment of the present invention. The blade surface layer 2 includes a blade base material 10, the first conductive layer 3A, and fine through holes 6 with respect to the thickness direction of the heat-shrinkable film. At least two or more layers of heat-shrinkable films 44 provided randomly are stacked and contracted and adhered to the blade substrate 10. The fine through hole 6 may also be formed by the perforation shown in the third embodiment.
　実施例４の効果としては、ブレード基材１０、もしくはブレード基材１０に配置した第１導電層３Ａと、熱収縮フィルム４４との間に含まれた気泡を効果的に除去することができ、ブレード完成時における保護フィルム施工作業や、補修における貼り替え作業時における貼り直し作業を回避することができる。また、このような微細貫通穴６を連続的に設けた場合には、これをミシン目としても利用することができ、貼り替えにおけるはく離作業が簡便となる。 As an effect of Example 4, it is possible to effectively remove the bubbles contained between the blade base material 10 or the first conductive layer 3A disposed on the blade base material 10 and the heat shrink film 44, The protective film construction work at the time of completion of the blade and the re-sticking work at the time of the replacement work in the repair can be avoided. Further, when such fine through holes 6 are continuously provided, they can be used as perforations, and the peeling work in the pasting is simplified.
　本発明において、ブレード１を包装する熱収縮フィルム４４の形態は、特に限定されない。大型のブレードへの貼付作業に工数をかけることなく、かつ平滑に貼り合わせる貼付方法に応じて、種々の形態で提供される。例えば、筒状、もしくは袋状、もしくは細長の帯状の保護フィルムを巻き付けたロール状で提供することができる。このような熱収縮フィルムを用いた包装手段として、例えば、筒状、もしくは袋状、もしくは細長帯状の保護フィルムを用いて、若干の余裕を持たせて予備的にブレード基材１０を包装した後、熱風、もしくはスチーム等の加熱装置によって、熱収縮フィルム４をブレード基材１０、もしくはブレード基材１０に配置した第１導電層３Ａと一体に収縮付着させる方法がある。 In the present invention, the form of the heat shrink film 44 for packaging the blade 1 is not particularly limited. It is provided in various forms according to the attaching method in which the attaching operation to a large blade is smoothly performed without man-hours. For example, it can be provided in the form of a roll around which a cylindrical, bag-like, or elongated strip-like protective film is wound. As a packaging means using such a heat-shrinkable film, for example, after the blade base material 10 is preliminarily packaged with a slight allowance using a cylindrical, bag-like, or strip-like protective film There is a method in which the heat-shrinkable film 4 is shrunk and attached integrally with the blade base material 10 or the first conductive layer 3A disposed on the blade base material 10 by a heating device such as hot air or steam.
　図６は、本発明の実施例５を示したものであり、ブレード表面層２は、ブレード基材１０と、第１導電層３Ａと、細長帯状の熱収縮フィルム５４とから構成され、熱収縮フィルム５４がブレード基材１０の外周に巻き付けられて、隣り合う帯状の熱収縮フィルム５４の端面同士がフィルム重なり面８で重なる構成をとる。 FIG. 6 shows a fifth embodiment of the present invention, and the blade surface layer 2 is composed of a blade base material 10, a first conductive layer 3A, and a heat-shrinkable film 54 in the form of an elongated strip. The film 54 is wound around the outer periphery of the blade base material 10, and the end surfaces of the adjacent belt-shaped heat shrink films 54 are overlapped with each other on the film overlap surface 8.
　この場合は、熱収縮フィルム５４は、細長帯状をなしており、熱収縮フィルムの製造およびブレードへの施工が容易であるという効果を有する。 In this case, the heat-shrinkable film 54 has an elongated strip shape, and has an effect that the heat-shrinkable film can be easily manufactured and applied to the blade.
　本発明に係る保護方法は、風力発電装置用ブレードに好適であるが、風力発電装置用ナセルカバー、スピナーカバーなどにも応用することができ、その応用範囲がこれらに限定されるものではない。 The protection method according to the present invention is suitable for a blade for a wind power generator, but can also be applied to a nacelle cover for a wind power generator, a spinner cover, and the like, and its application range is not limited thereto.
１　　　　　　ブレード
２　　　　　　ブレード表面層
３Ａ　　　　　　第１導電層
３Ｂ　　　　　　第２導電層
４、３４、４４、５４　　熱収縮フィルム
５　　　　　　ミシン目
６　　　　　　微細貫通孔
８　　　　　　フィルム重なり面
１０　　　　　　ブレード基材 DESCRIPTION OF SYMBOLS 1 Blade 2 Blade surface layer 3A 1st conductive layer 3B 2nd conductive layer 4, 34, 44, 54 Heat shrink film 5 Perforation 6 Fine through-hole 8 Film overlap surface 10 Blade base material

Claims (14)

  1. 　風力発電装置用のブレードと、該ブレードを被覆する耐候性を持つ熱収縮フィルムと、該ブレード外表面と該熱収縮フィルムとの間に設けた少なくとも１層の機能性層とを備え、
    　前記熱収縮フィルムを加熱して前記ブレードに収縮付着することによって、前記ブレードと前記機能性層とを前記熱収縮フィルムにより一体的に被覆することを特徴とする風力発電装置用のブレード保護方法。     A blade for a wind turbine generator, a heat-shrinkable film having weather resistance covering the blade, and at least one functional layer provided between the outer surface of the blade and the heat-shrinkable film,
    A blade protection method for a wind turbine generator, wherein the blade and the functional layer are integrally covered with the heat-shrinkable film by heating and heat-shrinking the heat-shrinkable film.
  2. 　請求項１に記載の風力発電装置用のブレード保護方法において、前記機能性層が導電層からなることを特徴とする風力発電装置用のブレード保護方法。 The blade protection method for a wind power generator according to claim 1, wherein the functional layer is a conductive layer.
  3. 　請求項２に記載の風力発電装置用のブレード保護方法において、前記導電層が金属メッシュ層からなることを特徴とする風力発電装置用のブレード保護方法。 3. The blade protection method for a wind power generator according to claim 2, wherein the conductive layer is made of a metal mesh layer.
  4. 　請求項２に記載の風力発電装置用のブレード保護方法において、前記導電層が発熱線を有することを特徴とする風力発電装置用のブレード保護方法。 3. The blade protection method for a wind power generator according to claim 2, wherein the conductive layer has a heating wire.
  5. 　請求項２に記載の風力発電装置用のブレード保護方法において、前記導電層が配線薄膜からなることを特徴とする風力発電装置用のブレード保護方法。 3. The blade protection method for a wind power generator according to claim 2, wherein the conductive layer is made of a wiring thin film.
  6. 　請求項１乃至５のいずれかに記載の風力発電装置用のブレード保護方法において、前記熱収縮フィルムに該熱収縮フィルムを部分的に前記ブレードから剥離するミシン目を任意の間隔で設けたことを特徴とする風力発電装置用のブレード保護方法。 The blade protection method for a wind turbine generator according to any one of claims 1 to 5, wherein a perforation for partially peeling the heat shrink film from the blade is provided in the heat shrink film at an arbitrary interval. A blade protection method for a wind turbine generator.
  7. 　請求項１乃至５のいずれかに記載の風力発電装置用のブレード保護方法において、前記熱収縮フィルムは少なくとも２層からなることを特徴とする風力発電装置用のブレード保護方法。 6. The blade protection method for a wind power generator according to claim 1, wherein the heat shrink film comprises at least two layers.
  8. 　請求項７に記載の風力発電装置用のブレード保護方法において、前記熱収縮フィルムは微細な貫通孔が不規則に設けられた該熱収縮フィルムから構成されたことを特徴とする風力発電装置用のブレード保護方法。 The blade protection method for a wind power generator according to claim 7, wherein the heat shrinkable film is composed of the heat shrinkable film provided with minute through holes irregularly. Blade protection method.
  9. 　請求項１乃至８のいずれかに記載の風力発電装置用のブレード保護方法において、前記熱収縮フィルムが前記ブレード外表面のうち少なくとも一部を被覆することを特徴とする風力発電装置用のブレード保護方法。 The blade protection method for a wind power generator according to any one of claims 1 to 8, wherein the heat shrink film covers at least a part of the outer surface of the blade. Method.
  10. 　請求項１乃至８のいずれかに記載の風力発電装置用のブレード保護方法において、略円筒状に成形した前記熱収縮フィルムを、前記ブレードと該ブレードの外表面に配置した前記導通層とを包含するように配置し、前記熱収縮フィルムを収縮付着することによって、前記ブレードと前記導電層とを一体的に被覆することを特徴とする風力発電装置用のブレード保護方法。 The blade protection method for a wind turbine generator according to any one of claims 1 to 8, wherein the heat shrink film formed into a substantially cylindrical shape includes the blade and the conductive layer disposed on an outer surface of the blade. The blade protection method for a wind power generator, wherein the blade and the conductive layer are integrally covered by arranging and heat-shrinking the heat-shrink film.
  11. 　請求項１乃至８のいずれかに記載の風力発電装置用のブレード保護方法において、帯状に成形加工された前記熱収縮フィルムを前記ブレードと前記導電層の上に順次貼り合わせ、前記熱収縮フィルムをその幅方向端面同士がフィルム重なり面で重なるように貼り合わせることを特徴とする風力発電装置用のブレード保護方法。 The blade protection method for a wind turbine generator according to any one of claims 1 to 8, wherein the heat-shrinkable film formed into a strip shape is sequentially bonded onto the blade and the conductive layer, and the heat-shrinkable film is attached. A blade protection method for a wind turbine generator, wherein the end faces in the width direction are bonded together so as to overlap each other on a film overlapping surface.
  12. 　請求項１乃至８のいずれかに記載の風力発電装置用のブレード保護方法において、加熱装置によって前記熱収縮フィルムを加熱し、前記ブレードに収縮付着させたことを特徴とする風力発電装置用のブレード保護方法。 The blade for wind power generator according to any one of claims 1 to 8, wherein the heat shrink film is heated by a heating device and contracted and adhered to the blade. Protection method.
  13. 　請求項１乃至１２のいずれか１つに記載の風力発電装置用のブレード保護方法を用いて制作されたことを特徴とする風力発電装置用のブレード。 A blade for a wind power generator, produced using the blade protection method for a wind power generator according to any one of claims 1 to 12.
  14. 　請求項１３に記載の風力発電装置用のブレードを備えることを特徴とする風力発電装置。 A wind turbine generator comprising the blade for a wind turbine generator according to claim 13.
PCT/JP2012/071686 2012-08-28 2012-08-28 Method for protecting blade for wind power generation and blade WO2014033832A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2012/071686 WO2014033832A1 (en) 2012-08-28 2012-08-28 Method for protecting blade for wind power generation and blade
JP2014532612A JP6005749B2 (en) 2012-08-28 2012-08-28 Blade protection method for wind turbine generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/071686 WO2014033832A1 (en) 2012-08-28 2012-08-28 Method for protecting blade for wind power generation and blade

Publications (1)

Publication Number Publication Date
WO2014033832A1 true WO2014033832A1 (en) 2014-03-06

Family

ID=50182683

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/071686 WO2014033832A1 (en) 2012-08-28 2012-08-28 Method for protecting blade for wind power generation and blade

Country Status (2)

Country Link
JP (1) JP6005749B2 (en)
WO (1) WO2014033832A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015190400A (en) * 2014-03-28 2015-11-02 株式会社東芝 Fixture for air flow generator and method for fixing air flow generator
CN108843486A (en) * 2018-07-30 2018-11-20 中科国风检测（天津）有限公司 Wind power blade leading edge protection system and construction process
CN112659599A (en) * 2020-11-05 2021-04-16 中国长江三峡集团有限公司 Preparation method and application of PTFE (polytetrafluoroethylene) -based film for preventing and removing icing of fan blade
WO2021241385A1 (en) * 2020-05-25 2021-12-02 三菱重工業株式会社 Wind turbine blade, wind turbine, and method for maintaining wind turbine blade
JP2022538402A (en) * 2019-06-20 2022-09-02 ギャラクティック コ．，エルエルシー One-piece pultruded composite profile and method for manufacturing same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56151282A (en) * 1980-04-23 1981-11-24 Mitsubishi Electric Corp Vertical-shaft type windmill
JPH048774U (en) * 1990-05-10 1992-01-27
JP2009008040A (en) * 2007-06-29 2009-01-15 Mecaro:Kk Magnus type wind power generator
JP2009275536A (en) * 2008-05-13 2009-11-26 Global Energy Co Ltd Blade of windmill and windmill
JP2010096074A (en) * 2008-10-16 2010-04-30 Global Energy Co Ltd Blade of wind mill and method for manufacturing the same
JP2010234989A (en) * 2009-03-31 2010-10-21 Ikutoku Gakuen Kanagawa Koka Daigaku Blade structure having anti-icing structure
US20100264665A1 (en) * 2009-04-17 2010-10-21 3M Innovative Properties Company Lightning protection sheet with patterned discriminator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56151282A (en) * 1980-04-23 1981-11-24 Mitsubishi Electric Corp Vertical-shaft type windmill
JPH048774U (en) * 1990-05-10 1992-01-27
JP2009008040A (en) * 2007-06-29 2009-01-15 Mecaro:Kk Magnus type wind power generator
JP2009275536A (en) * 2008-05-13 2009-11-26 Global Energy Co Ltd Blade of windmill and windmill
JP2010096074A (en) * 2008-10-16 2010-04-30 Global Energy Co Ltd Blade of wind mill and method for manufacturing the same
JP2010234989A (en) * 2009-03-31 2010-10-21 Ikutoku Gakuen Kanagawa Koka Daigaku Blade structure having anti-icing structure
US20100264665A1 (en) * 2009-04-17 2010-10-21 3M Innovative Properties Company Lightning protection sheet with patterned discriminator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015190400A (en) * 2014-03-28 2015-11-02 株式会社東芝 Fixture for air flow generator and method for fixing air flow generator
CN108843486A (en) * 2018-07-30 2018-11-20 中科国风检测（天津）有限公司 Wind power blade leading edge protection system and construction process
CN108843486B (en) * 2018-07-30 2023-10-13 中科国风检测（天津）有限公司 Wind power blade leading edge protection system and construction process
JP2022538402A (en) * 2019-06-20 2022-09-02 ギャラクティック コ．，エルエルシー One-piece pultruded composite profile and method for manufacturing same
WO2021241385A1 (en) * 2020-05-25 2021-12-02 三菱重工業株式会社 Wind turbine blade, wind turbine, and method for maintaining wind turbine blade
TWI774387B (en) * 2020-05-25 2022-08-11 日商三菱重工業股份有限公司 Windmill wing, windmill and repair method of windmill wing
CN112659599A (en) * 2020-11-05 2021-04-16 中国长江三峡集团有限公司 Preparation method and application of PTFE (polytetrafluoroethylene) -based film for preventing and removing icing of fan blade

Also Published As

Publication number Publication date
JPWO2014033832A1 (en) 2016-08-08
JP6005749B2 (en) 2016-10-12

Similar Documents

Publication Publication Date Title
JP6005749B2 (en) Blade protection method for wind turbine generator
Shohag et al. Damage mitigation techniques in wind turbine blades: A review
EP2686546B1 (en) Arrangement to improve the surface of a wind turbine blade
US10473086B2 (en) Erosion resistant leading edge cap for a wind turbine rotor blade
JP5059249B2 (en) Wing body and laminated protective sheet for the wing body
CN103606580B (en) Flexible solar plate and preparation method thereof, dirigible
CN111164303B (en) Use of new material in wind turbine components and devices and method thereof
CN111886126B (en) Method of manufacturing a rotor blade, rotor blade and method of manufacturing a flat-backed airfoil
EP2274514A1 (en) A wind turbine blade
EP3276162A3 (en) Efficient wind turbine blades, wind turbine blade structures, and associated systems and methods of manufacture, assembly and use
WO2012059527A3 (en) Solar reflector in composite material based on resin reinforced with cut fibres, and uses in solar plants
WO2013093349A3 (en) Method for de-icing composite material structures, particularly blades of a wind turbine, suitable composition and suitable device
CN102859718A (en) Photovoltaic module backsheet, materials for use in module backsheet, and processes for making the same
US20160368613A1 (en) Aircraft structure with solar energy capture capacity
EP2381104A2 (en) Wind turbine, nacelle and method of assembling wind turbine
CN102374137B (en) Manufacturing method of icing-protection wind power generator blade
Golfman Hybrid anisotropic materials for wind power turbine blades
US20230323864A1 (en) Method for repairing a lightning protection system of wind turbine rotor blade
CN201714588U (en) Protecting sleeve of wind power blade tip lightening arrester
ITMI20110329A1 (en) AEROGENERATOR EQUIPPED WITH ILLEGAL DEVICES AND METHOD TO PREVENT ICE FORMATION ON THE BLADES OF A VENTILATOR
CN111894791A (en) Blade and wind generating set
CN107882697A (en) A kind of wind generator set blade anti-icing and deicing system
CN202423338U (en) Coated glass with protective film
JP4765447B2 (en) Thin film solar cell module manufacturing method and manufacturing apparatus
Fan et al. Flexible Photovoltaic Solar Design

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12883895

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2014532612

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12883895

Country of ref document: EP

Kind code of ref document: A1