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WO2012009855A1 - 新型竹质叶片结构 - Google Patents

新型竹质叶片结构 Download PDF

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Publication number
WO2012009855A1
WO2012009855A1 PCT/CN2010/075387 CN2010075387W WO2012009855A1 WO 2012009855 A1 WO2012009855 A1 WO 2012009855A1 CN 2010075387 W CN2010075387 W CN 2010075387W WO 2012009855 A1 WO2012009855 A1 WO 2012009855A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
strip
bamboo composite
bamboo
composite material
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.)
Ceased
Application number
PCT/CN2010/075387
Other languages
English (en)
French (fr)
Inventor
杜瑛卓
张旺
刘军华
王鹏飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING KHANWIND TECHNOLOGY Co Ltd
Original Assignee
BEIJING KHANWIND TECHNOLOGY Co Ltd
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 BEIJING KHANWIND TECHNOLOGY Co Ltd filed Critical BEIJING KHANWIND TECHNOLOGY Co Ltd
Priority to PCT/CN2010/075387 priority Critical patent/WO2012009855A1/zh
Priority to CN201080067551XA priority patent/CN102985683A/zh
Publication of WO2012009855A1 publication Critical patent/WO2012009855A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • 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
    • F05B2280/40—Organic materials
    • F05B2280/4002—Cellulosic materials, e.g. wood
    • 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
    • F05B2280/40—Organic materials
    • F05B2280/4011—Organic materials not otherwise provided for
    • 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
    • F05B2280/6003—Composites; e.g. fibre-reinforced
    • 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
    • F05B2280/6013—Fibres
    • 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 invention relates to a wind turbine blade structure mainly composed of a bamboo composite material and a small amount of glass fiber composite material or carbon fiber composite material.
  • bamboo leaves refer to the main material of the blade as a bamboo composite material, including a small amount of glass fiber, PVC or foam, and the blade is integrated by resin bonding, making the bamboo composite material the main bearing structure in the blade.
  • the cost performance of the blade is an important factor in measuring blade performance, depending on blade power and manufacturing costs.
  • the length of the blade determines the final power generation, but as the length of the blade increases, the weight and cost of the blade multiply. Therefore, at the beginning of the design, the power, structural safety, and cost performance of the blade must be considered.
  • bamboo Due to its high strength, low density and good mechanical properties, bamboo can use light weight bamboo as the main material when designing long blades, so as to reduce the weight of the whole blade, so that bamboo leaves can be applied to several megawatts. Tile super large wind turbines.
  • bamboo has the natural advantages of short growth cycle, sufficient resources, and low processing cost. Therefore, the advantages of bamboo leaves in terms of cost performance are more obvious.
  • bamboo blades are lighter in weight, lower in cost and more cost effective.
  • the bamboo composite material is based on the fiber in the natural bamboo material, which is more conducive to the recycling and reuse of the blade after its service life.
  • the object of the present invention is to apply a bamboo composite material to a large wind turbine blade and to optimize the performance, cost and safety of the bamboo blade.
  • bamboo composite blades are composed of a shell and a web, just like a normal blade structure.
  • the structural material of the through blade is a spar cap made of FRP, which has a constant width in the blade casing, and the thickness is stepped thinner from the blade root to the blade tip.
  • the bamboo composite material leaf shell contains strip-shaped bamboo composite materials, and the strip-shaped bamboo composite materials are arranged in a certain order in the shell, and the thickness is uniform, but the distribution in the width direction of the shell is the leaf root. Gradually reduce to the tip of the blade, forming a gradual shape with a gentle transition.
  • Ordinary blades use a spar cap made of FRP as the main structural material, and it is required to make the girder in advance.
  • FRP is made by infiltrating glass fiber with resin.
  • the spar cap made of FRP should not be too wide to fit well with the blade mould.
  • the innovative blade structure of the present invention is determined by the fact that the bamboo processing process is more suitable for processing into equal thickness sheets. This innovative structure also achieves structural design optimization with reduced leaf tip to tip material, but greatly reduces the use of expensive filler materials, thereby reducing blade costs.
  • the gentle transition of the bamboo composite material from the gradual shape of the blade root to the tip of the blade is achieved by the oblique angle of the outer strip-shaped bamboo composite material.
  • the beam caps of ordinary blades are made of glass fiber, each layer of glass fiber is thin, and a step-like transition can be used.
  • the bamboo strip has a certain width. In order to avoid stress concentration, the bamboo strip as the main structural material must make the width of the bamboo pavement change as gently as possible, and the stepped structure must not appear.
  • Part of the space in the blade shell where the bamboo composite is not placed is filled with a low density core material such as balsa or foam.
  • the inner and outer surfaces of the bamboo composite within the blade shell contain multidirectional glass fibers.
  • the shell contains a bamboo composite material.
  • part of the strip-shaped bamboo composite material in the shell is replaced by a strip made of glass fiber or carbon fiber as a main material by a pultrusion process or a vacuum introduction process.
  • Composite material These strip composites, which are made of glass fiber or carbon fiber as the main material, have better strength and modulus of elasticity than bamboo, but have higher density. Putting them in a part with a small structural safety factor is beneficial to increase the structural safety factor of the product, but does not add too much weight.
  • the resin material is filled in the gap between the strip-shaped composite material monomer and the monomer, so that the strip-shaped composite material becomes a whole in the blade shell.
  • the vacuum introduction process is applied to the manufacture of bamboo composite blades. Compared with ordinary blades, it can save resin matrix material and has a faster vacuum introduction speed, which is beneficial to reduce blade cost and increase blade production speed.
  • the blade root is provided with a bolt sleeve for connecting with the wind turbine hub; the blade also includes an attachment device such as a lightning receptor and a wire for transmitting the electricity to the wind turbine through the wire when the blade is struck by lightning And then to the ground to prevent damage to the blades.
  • an attachment device such as a lightning receptor and a wire for transmitting the electricity to the wind turbine through the wire when the blade is struck by lightning And then to the ground to prevent damage to the blades.
  • the invention fully utilizes the characteristics of the bamboo composite material with large modulus, low density, good structural performance, and high strength of the carbon fiber composite material or the FRP composite material, thereby optimizing the safety performance of the blade and reducing the weight of the blade.
  • the material of the blade body is in the form of strips, material transportation and layup are more convenient.
  • Figure 1 is a perspective view of the bamboo blade
  • Figure 2 is a cross-sectional view of the section of the blade A shown in Figure 1;
  • Figure 3 is a partial enlarged view of a portion E of the section shown in Figure 2;
  • Figure 4 is a cross-sectional view of the section of the blade B shown in Figure 1;
  • Figure 5 is a plan view of the blade shown in Figure 1;
  • Figure 6 is a perspective view of the strip-shaped bamboo composite material shown in Figure 5;
  • Figure 7 is a partial enlarged view of the X portion shown in Figure 1;
  • Figure 8 is a partial enlarged view of the Y portion shown in Figure 1. detailed description:
  • Figure 1 shows a perspective view of a wind turbine blade, where X represents the blade root portion of the blade and Y represents the blade tip portion of the blade.
  • the 2 is a cross-sectional view of the blade near A of the blade root portion, the blade includes two parts of the casing 1 and the web 2, and the casing and the web are both typical sandwich structures, that is, the inner surface layer and the outer surface layer are thinner but The glass steel layer with higher strength has a thicker but lower strength core material in the middle.
  • the core material of the shell is bamboo composite 3 and low density balsa or foam 4, and the core of the web is low density balsa or foam 4 .
  • bamboo composite material 3 is the main carrier material of the blade, and Basha wood or foam 4 only serves as a filling.
  • Fig. 3 is a partial enlarged view of a portion E of the section shown in Fig. 2.
  • the bamboo composite material in the casing is composed of a certain number of strip-shaped bamboo composite materials closely arranged together, and the resin is filled between the monomer and the monomer by resin vacuum introduction technology. In the gap, the bamboo composite material becomes integral in the blade.
  • the inner and outer sides of the bamboo composite material 3 are thin glass steel layers 6 having a multi-directional glass fiber layer.
  • Figure 5 is a plan view of the blade shown in Figure 1, and the dotted line range indicated by reference numeral 7 represents the distribution of the bamboo composite material in the blade, which is characterized by the fact that the bamboo composite material gradually decreases from the blade root to the blade tip, in the blade shell.
  • the body forms a gentle gradation, which is accomplished by the bevel of the outer strip of bamboo composite, as shown in Figure 6.
  • a small amount of strip reinforcing material 5 is placed on the middle portion 10 of the blade instead of the strip-shaped bamboo composite material, and the strip reinforcing material is made of glass fiber or carbon fiber by a pultrusion process, for convenience
  • the replacement of the strip-shaped bamboo composite material is similar in size to the strip-shaped bamboo composite material.
  • the strip-shaped reinforcing material and the strip-shaped bamboo composite material are closely arranged together, and the resin is vacuum-introduced to make it integral.
  • the shell and the web are integrally joined by bonding, and the position where the web is bonded to the shell is located within the range of the bamboo composite material in the shell, so that the web is composited with the bamboo.
  • the material forms a box-like structure in the blade.
  • the root of the blade contains a bolt sleeve and a screw that are uniformly distributed, as shown in Figure 7, the bolt sleeve 8 and the screw
  • the entire blade is connected to the wind turbine by means of a screw 9 which is distributed at the root of the blade.
  • the tip of the blade contains a lightning receptor 12 for avoiding damage to the blade by lightning during operation of the blade and conducting lightning through the wire 11 to the outside of the blade, as shown in FIG.

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)
  • Moulding By Coating Moulds (AREA)
  • Wind Motors (AREA)

Description

新型竹质叶片结构
技术领域：
本发明涉及一种以竹质复合材料和少量的玻璃纤维复合材料或碳纤 维复合材料为主体的风力机叶片结构。
背景技术：
竹质叶片是指叶片的主体材料为竹质复合材料， 同时包括少量的玻 璃纤维、 PVC或泡沫， 并通过树脂粘接使叶片成为整体， 使竹质复合材料 成为叶片中主要的承力结构。
叶片的性价比是衡量叶片性能的重要因素， 主要取决于叶片功率和 制造成本。 叶片的长度决定最终的发电功率， 但随着叶片长度的增加， 叶片的重量、 成本也随之成倍增加。 因此， 在设计之初， 必须综合考虑 叶片的功率、 结构安全性、 性价比。 由于竹材具备高强度、 低密度以及 良好的力学性能， 因此在设计较长的叶片时， 能够使用重量较轻的竹材 作为主体材料， 以便降低整个叶片的重量， 使得竹质叶片可以应用于几 兆瓦的超大型风力发电机组。 此外， 竹材还具备生长周期短、 资源充足、 加工成本低等天然的优势， 因此竹质叶片在性价比方面的优势更加明显。
与相同规格的玻璃钢叶片相比， 竹质叶片的重量更轻、 成本更低、 性价比更高。 此外， 竹质复合材料是以天然竹材中的纤维为主要原材料， 更利于叶片到达使用寿命之后的回收再利用。
发明内容：
本发明的目的是将竹质复合材料应用于大型风力发电机叶片， 并使 该竹质叶片的性能、 成本、 安全达到最优化。
竹质复合材料叶片与普通叶片结构一样， 由壳体和腹板组成。 但普 通叶片的结构材是由玻璃钢制成的梁帽， 其在叶片壳体内宽度不变， 厚 度自叶根向叶尖呈阶梯状变薄。 而竹质复合材料叶片壳体内含有条状竹 质复合材料， 所述条状竹质复合材料在壳体内以一定的顺序排列， 厚度 均匀， 但在壳体内宽度方向上的分布方式为由叶根向叶尖逐渐减少， 形 成平緩过渡的渐变形状。
普通叶片使用玻璃钢制成的梁帽作为主要结构材， 要求提前把梁帽 制作好。 玻璃钢是由玻璃纤维被树脂浸润后顾化制成的。 由玻璃钢制成 的梁帽不宜过宽， 以能够很好地与叶片模具相贴合。 而本发明所涉及的 创新型的叶片结构是根据竹材加工工艺更适合加工为等厚板材而决定 的。 这种创新型结构同样能够达到叶根向叶尖材料逐渐减少的结构设计 优化目的， 却大大减少了对昂贵的填充材料的使用， 从而降低了叶片成 本。
其中， 竹质复合材料由叶根向叶尖的渐变形状的平緩过渡是通过外 侧条状竹质复合材料的斜角实现的。 由于普通叶片中梁帽是由玻璃纤维 制成， 玻璃纤维每层较薄， 可以釆用台阶状过渡。 但竹条具有一定的宽 度， 为避免应力集中， 以竹条为主要结构材则必须让竹材铺层宽度的变 化尽可能平緩， 而绝不能出现台阶状结构。 叶片壳体内没有铺放竹质复 合材料的部分空间由低密度夹芯材料如巴沙木或泡沫填充。 叶片壳体内 竹质复合材料的内表面和外表面含有多方向玻璃纤维。 为了提升叶片安 全性能， 腹板与壳体粘接的位置， 壳体内含有竹质复合材料。
在叶片中竹质复合材料结构安全系数较小的部位， 把壳体内的部分 条状竹质复合材料替换为以拉挤工艺或真空导入工艺制成的由玻璃纤维 或碳纤维为主要材料的条状复合材料。 这些由玻璃纤维或碳纤维为主要 材料的条状复合材料具有比竹材更好的强度和弹性模量， 但密度更高。 把它们放在结构安全系数较小的部位有利于提高产品的结构安全系数， 但不会增加太多重量。 通过使用真空导入技术使树脂材料填充于条状复合材料单体与单体 之间的缝隙中， 使条状复合材料在叶片壳体中成为一个整体。 真空导入 工艺应用于竹质复合材料叶片的制造中， 比应用于普通叶片中， 能够更 加节省树脂基体材料， 同时具有更快的真空导入速度， 这有利于降低叶 片成本， 提高叶片生产速度。
此外， 该叶片根部装有螺栓套， 用于与风力发电机组轮毂的连接； 叶片内还包含有接闪器、 导线等附属装置， 用于在叶片受到雷击时把电 通过导线传到风力发电机组， 继而传到地面， 从而防止叶片受到破坏。
本发明充分利用了竹质复合材料的模量大、 密度低、 结构性能好， 以及碳纤维复合材料或玻璃钢复合材料的强度大的特性， 优化了叶片的 安全性能， 降低了叶片的重量。 此外， 由于叶片主体材料釆用条状形式， 使得材料运输和铺层更加便捷。
附图说明：
通过下文中的参照附图所进行的描述部分， 能够更好的理解所有上 述特征， 所述附图为：
图 1为所述竹质叶片的立体视图；
图 2为图 1所示叶片 A截面的剖视图；
图 3为图 2所示截面 E部分的局部放大图；
图 4为图 1所示叶片 B截面的剖视图；
图 5为图 1所示叶片的俯视图；
图 6为图 5所示条状竹质复合材料单体立体视图；
图 7为图 1所示 X部分的局部放大图；
图 8为图 1所示 Y部分的局部放大图。 具体实施方式：
下面结合具体附图和实施例对本发明作进一步说明。
图 1所示为风力发电机叶片的立体视图， X代表叶片的叶根部分， Y代 表叶片的叶尖部分。
图 2为靠近叶根部分的 A处的叶片截面图， 叶片包括壳体 1和腹板 2两部 分， 壳体与腹板均为典型的夹层结构， 即内表层、 外表层为厚度较薄但 强度较大的玻璃钢层， 中间为厚度较厚但强度较低的芯材。 壳体的芯材 为竹质复合材料 3和低密度巴沙木或泡沫 4 , 腹板的芯材为低密度巴沙木 或泡沫 4。 竹质复合材料 3是叶片的主要承载材料， 巴沙木或泡沫 4仅起到 填充的作用。
图 3为图 2所示截面 E部分的局部放大图。 如图 3所示， 壳体内的竹质复 合材料是由一定数量的条状竹质复合材料单体紧密排列在一起组成的， 并通过树脂真空导入技术使树脂填充于单体与单体之间的缝隙中， 从而 使竹质复合材料在叶片内成为整体。 图中竹质复合材料 3的内外两侧为厚 度较薄的玻璃钢层 6 , 其主体为多方向玻璃纤维层。
图 5中为图 1所示叶片的俯视图， 标号 7所示的虚线范围代表竹质复合 材料在叶片中的分布， 其特征为竹质复合材料由叶根向叶尖逐渐较少， 在叶片壳体内形成平緩的渐变， 这种渐变是通过外侧条状竹质复合材料 单体的斜角完成上述过渡， 如图 6所示。 为了提高结构的安全性， 在叶片 的中间部位 10铺放少量的条状加强材料 5替代条状竹质复合材料， 条状加 强材料是玻璃纤维或碳纤维通过拉挤成型工艺制成， 为了方便与条状竹 质复合材料的替换， 其规格尺寸与条状竹质复合材料类似。 如图 4所示， 在叶片壳体中含有条状加强材料的位置， 条状加强材料与条状竹质复合 材料紧密排列在一起， 同样釆用树脂真空导入技术使其成为整体。
如图 2、 图 4所示， 壳体与腹板通过粘接的方式连接成为整体， 腹板与 壳体粘接的位置位于壳体内竹质复合材料的范围内， 使腹板与竹质复合 材料在叶片中形成一个类似盒子的结构。
叶片根部含有均勾分布的螺栓套和螺杆， 如图 7所示， 螺栓套 8与螺杆
9通过螺紋连接， 整个叶片通过叶片根部均勾分布的螺杆 9与风力发电机 组连接。 叶片尖部含有接闪器 12 , 用于避免叶片运行过程中闪电对叶片 的破坏， 并通过导线 11将闪电传导到叶片外部， 如图 8所示。

Claims

权利要求
1、 一种风力发电机叶片， 由壳体和腹板组成， 其特征在于， 壳体内 含有条状竹质复合材料， 所述条状竹质复合材料在壳体内以一定的顺序 排列， 在壳体内的分布方式为由叶根向叶尖逐渐减少， 形成平緩过渡的 渐变形状。
2、 如权利要求 1所述的叶片， 其特征在于， 所述竹质复合材料由叶 根向叶尖的渐变形状的平緩过渡是通过外侧条状竹质复合材料的斜角实 现。
3、 如权利要求 1所述的叶片， 其特征在于， 叶片壳体内没有铺放竹 质复合材料的部分空间由低密度夹芯材料填充。
4、 如权利要求 3所述的叶片， 其特征在于， 所述低密度夹芯材料为 巴沙木或泡沫。
5、 如权利要求 1所述的叶片， 其特征在于， 叶片壳体内的所述竹质 复合材料的内表面和外表面含有多方向玻璃纤维。
6、 如权利要求 1所述的叶片， 其特征在于， 在所述腹板与所述壳体 粘接的位置， 所述壳体内含有所述竹质复合材料。
7、 如权利要求 1所述的叶片， 其特征在于， 所述壳体内的部分条状 竹质复合材料替换为以拉挤工艺或真空导入工艺制成的， 由玻璃纤维或 碳纤维为主要材料的条状复合材料。
8、 如权利要求 1-7所述的叶片， 其特征在于， 使用真空导入技术使 树脂材料填充于条状复合材料单体与单体之间的缝隙中， 使其在叶片壳 体中成为一个整体。
9、 如权利要求 1所述的叶片， 其特征在于， 叶片根部装有螺栓套， 用于与风力发电机组轮毂的连接。
10、 如权利要求 1 所述的叶片， 其特征在于， 叶片尖部含有接闪器、 导线用于避免闪电对叶片的破坏。
PCT/CN2010/075387 2010-07-22 2010-07-22 新型竹质叶片结构 Ceased WO2012009855A1 (zh)

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CN1359450A (zh) * 1999-06-21 2002-07-17 Lm玻璃纤维制品有限公司 具有除冰与避雷保护的风力涡轮机桨叶
CN1533476A (zh) * 2001-07-19 2004-09-29 Neg 风力涡轮机叶片
CN1977108A (zh) * 2004-06-30 2007-06-06 维斯塔斯风力系统有限公司 由两个分离的部分制成的风轮机叶片以及装配方法
CN101235797A (zh) * 2008-02-15 2008-08-06 无锡瑞尔竹风科技有限公司 竹制复合材料风力机叶片及其真空灌输工艺
CN101260861A (zh) * 2007-03-09 2008-09-10 通用电气公司 用于风力涡轮机叶片的集成抗剪腹板
CN201155423Y (zh) * 2008-02-15 2008-11-26 无锡瑞尔竹风科技有限公司 竹制复合材料风力发电机叶片
CN201228611Y (zh) * 2008-04-11 2009-04-29 江苏天奇物流系统工程股份有限公司 带切角的竹层积材组装的风力发电机叶片体

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1359450A (zh) * 1999-06-21 2002-07-17 Lm玻璃纤维制品有限公司 具有除冰与避雷保护的风力涡轮机桨叶
CN1533476A (zh) * 2001-07-19 2004-09-29 Neg 风力涡轮机叶片
CN1977108A (zh) * 2004-06-30 2007-06-06 维斯塔斯风力系统有限公司 由两个分离的部分制成的风轮机叶片以及装配方法
CN101260861A (zh) * 2007-03-09 2008-09-10 通用电气公司 用于风力涡轮机叶片的集成抗剪腹板
CN101235797A (zh) * 2008-02-15 2008-08-06 无锡瑞尔竹风科技有限公司 竹制复合材料风力机叶片及其真空灌输工艺
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