CN201284721Y - Thin-slab wind energy blade with rammed stiffening ribs - Google Patents

Thin-slab wind energy blade with rammed stiffening ribs Download PDF

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Publication number
CN201284721Y
CN201284721Y CN 200820202414 CN200820202414U CN201284721Y CN 201284721 Y CN201284721 Y CN 201284721Y CN 200820202414 CN200820202414 CN 200820202414 CN 200820202414 U CN200820202414 U CN 200820202414U CN 201284721 Y CN201284721 Y CN 201284721Y
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CN
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Prior art keywords
blade
wind
leaf blade
sheet
blade body
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CN 200820202414
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Chinese (zh)
Inventor
向建化
李宗涛
欧栋生
勇 汤
陈伟彬
陈国龙
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阳江市新力工业有限公司
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/721Blades or rotors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/74Wind turbines with rotation axis perpendicular to the wind direction

Abstract

The utility model discloses a thin-plate wind-energy leaf blade with a punching molding type strengthening rib, and comprises a leaf blade body (1), the leaf blade body is formed by punching metal thin plates with equal thickness, and the middle part of the leaf blade body is provided with at least a punching molding type strengthening rib (2). A foline section-shaped line of the thin-plate wind-energy leaf blade is a straight line or a streamline-shaped curved line; the strengthening rib forms a long strip shape and is vertical with the leaf blade body; or the strengthening rib and one side of the leaf blade body form a sharp angle, and can be flat shape; or the height of the strengthening rib is gradually reduced from a leaf root along the radial direction or is gradually reduced to the leaf blade edge along the inclined direction. The thin-plate wind-energy leaf blade with punching molding type strengthening rib has higher intensity, is applied to a wind powered generator, has small self-weight and higher intensity, is convenient for the wind powered generator to be started in low wind speed condition, not only has practical economic value, and is energy saving and environment protective and has better social benefits.

Description

一种带冲压成型式加强筋的薄板风能叶片技术领域 BACKGROUND Wind vane sheet A tape stamped stiffening ribs

本实用新型涉及一种风能叶片,特别是涉及一种带冲压成型式加强筋的薄板风能叶片。 The present invention relates to a wind blade, particularly to a blade for a wind sheet stamped with stiffening ribs.

背景技术 Background technique

目前,全球能源日趋枯竭,全球环境日趋恶化,可再生能源的开发迫在眉睫,而风力发电作为当前较为成熟的可再生能源技术,在国家政策的大力扶持下正快速增长。 Currently, the global energy depleting and global environmental deterioration, development of renewable energy sources imminent, but wind power as the current more mature renewable energy technologies is growing rapidly with the strong support of national policy. 但目前风电的运用范围仍存在极大的限制,主要集中分布于新疆、内蒙古和沿海岛屿等风能资源丰富地区,而在人口密度大、用电量高的城市地区,大部分风电产品仍无法有效应用。 But the scope of application of wind power remains extremely limited, mainly concentrated in wind energy resources in Xinjiang, Inner Mongolia and other rich islands and coastal areas, and the high population density, high electricity consumption in urban areas, most of the wind power products is still not effective application. 因为目前大多数风电产品启动风速较高,低速运行时效率低,无法满足在城市弱风场工况工作。 Because most wind power products launch high speed, low speed low aging, can not meet the city weak wind conditions at work.

要开发出适合城市弱风场运行的风力发电机,必须解决其低风速启动问题。 To develop a wind turbine for low wind farm run city must address its low wind speed startup problems. 现大多数风能叶片采用航空机翼的翼型作为叶片的型面,这种翼型叶片有效提高了风机的效率,降低了噪音。 Now most of the wind vane airfoil using aviation as a wing profile blades, the blade airfoil effectively improve the efficiency of the fan and reduce noise. 但由于航空翼型型面复杂, 一般采用玻璃钢复合材料、工程塑料或金属型材加工,给加工带来了不便,提高了生产成本,生产效率低,且叶片自重大,不利于风机在低风速下启动运行。 However, due to the complexity Air airfoil profile, typically fiberglass composite materials, metal or plastic profile processing, a processing inconvenience, increases the cost of production, low productivity, and the blades since the major unfavorable at the low speed fan up and running. 现有的叶片采用等厚薄板制成,这种叶片制造简单,生产效率高,成本低廉,但叶片强度难以得到保证。 It made using conventional blade plate thickness and the like, such a blade manufacture is simple, high efficiency, low cost, but is difficult to secure the strength of the blade.

实用新型内容 SUMMARY

本实用新型的目的在于针对现有风能叶片在低风速下风机启动难,薄板叶片强度不足等一些不足之处,设计一种叶片自重小,强度较高,制造成本低廉的带冲压成型式加强筋的薄板风能叶片。 The utility model aims for the existing wind turbine blade is difficult to start at low wind speeds, lack of blade strength sheet and some other deficiencies, to design a blade small weight, high strength, low manufacturing costs with stamping style ribs sheet wind vane.

本实用新型的目的是这样实现的: The purpose of the present invention is implemented as follows:

一种带冲压成型式加强筋的薄板风能叶片,包括叶片体,所述叶片体采用等厚金属薄板冲压而成,所述叶片体中部设有至少一根冲压成型式加强筋。 A tape wind vane sheet stamped bead type comprising blade body, said blade body is made of thick sheet metal stamping and the like, the central body is provided with at least one blade-type stamping bead. 所述的薄板风能叶片叶素截面型线可为直线或流线型曲线。 The wind vane element sheet cross-sectional profile may be straight or curved streamlined. 所述的叶片体为平面板形泰或纹面板形态;所述纹面纹路垂直于叶片回转半径,且纹面斜度为5°〜30° 。 Said flat plate-shaped blade body or grain Thai panel form; lines perpendicular to the surface of the grain radius of gyration of the blade and profile gradient was 5 ° ~30 °.

所述加强筋为长条形,垂直叶片体。 The bead is elongated, vertical blades thereof. 所述加强筋为长条形,与叶片体一侧成一锐角。 The bead is elongated, one side of the blade body at an acute angle. 所述加强筋为扁平形。 The reinforcement rib is flat.

所述的加强筋高度由叶根开始沿径向方向逐渐减小或沿斜向往叶片边缘逐 The height of the ribs gradually decreases from the blade root or obliquely along the radial direction of the blade edge by longing

渐减小o O gradually reduced

所述加强筋为2条。 The two stiffeners. 所述加强筋为多条,沿叶脉状布置。 The plurality of reinforcing ribs, along the vein-shaped arrangement.

相对于现有技术,本实用新型的优点和有益效果: With respect to the prior art, the present invention advantages and benefits:

1、 本实用新型的风力发电机叶片能够获得较宽的叶片体,在不增加叶片厚度的同时能使叶片具有较高的强度。 1, the present invention is possible to obtain a wider blade wind turbine blade body, without increasing the thickness of the blade while the blade can have a higher strength.

2、 本实用新型工艺简单,采用冲压模具生产,成品一致性好,能够有效的 2, the present invention process is simple, stamping mold, finished good consistency, can effectively

控制风轮的动平衡量。 Controlling the amount of balancing of the rotor.

3、 本实用新型叶片自重小强度高,利于弱风场风力发电机的启动运行工作, 不仅有实用的经济价值,也有较好的社会效益,有利于环保,节约能源。 3, the present invention leaves little weight high strength, which will help to start running low wind farm wind turbines work, not only practical economic value, and has a good social benefits, environmentally friendly, energy saving.

附图说明 BRIEF DESCRIPTION

图la为带加强筋叶片1为叶片俯视图; FIG la 1 is a plan view of the blade is ribbed blade;

图lb是图la中AA断面为直线的薄板风能叶片叶素截面型线; FIG lb is a cross-section AA of FIG. La rectilinear sheet wind vane sectional profile element;

图lc是图la中AA断面为流线型曲线的薄板风能叶片叶素截面型线; FIG. Lc is a cross section AA of FIG. La sheet wind vane element streamlined cross-sectional profile curve;

图2a为叶片体为平面板形带加强筋叶片的A向视图; Figure 2a is a blade body A flat plate-shaped with a view to the blade stiffener;

图2b为叶片体为纹面板形带加强筋叶片的A向视图; Figure 2b is a blade body A panel-shaped pattern with a view to the blade stiffener;

图3 a为长条形加强筋结构示意图; FIG 3 a is a schematic view of elongated reinforcing rib structure;

图3b为倾斜型加强筋结构示意图; Figure 3b schematic reinforcing rib structure is tilting;

图3c为扁平型加强筋结构示意图; Figure 3c schematic reinforcing rib structure is flat;

图4为带加强筋的侧面示意图; FIG 4 is a schematic view with side stiffeners;

图5为多条加强筋叶片示意图; 5 is a schematic view of a plurality of reinforcing ribs blade;

图6本实用新型实施例3示意图。 6 embodiment of the present invention Example 3 FIG.

具体实施方式 detailed description

下面本实用新型的具体实施方式作进一步详细的说明,但本实用新型的实 Hereinafter, the present invention in further detail specific embodiments described, but the present invention is a solid

4施方式不限于此。 4 embodiment is applied is not limited thereto. 实施方式1: Embodiment 1:

如图la、 lb、 lc所示,带冲压成型式加强筋的薄板风能叶片包括叶片体1 和加强筋2。 FIG la, lb, shown lc, wind blade sheet stamping with bead type comprising a blade body 2 and the reinforcing ribs. 叶片体1直径为800 mm (在风机领域,叶片直径通常用来表示叶片绕其旋转中心所扫掠圆盘直径),以叶片体l的半径方向为径向,径向长度为370 mm,采用等厚钢板或铝合金板冲压成型。 1 blade diameter of 800 mm (in the field of wind turbine blade showing the blade diameters are usually used around the center of rotation swept diameter disc) to the radial direction of the blade body l radially, the radial length of 370 mm, using and other thick steel plate or aluminum alloy plate stamping. 薄板风能叶片叶素截面型线可为直线(图lb所示),也可以是图lc所示的流线型曲线。 Wind vane sheet element may be rectilinear cross-sectional profile (as shown in FIG. Lb), the curve may be streamlined as shown in FIG lc. 所谓的叶素截面型线是指忽略叶片厚度和加强筋后叶片的截面形态。 The so-called blade element cross-sectional profile and thickness of the blade means to ignore the blade section pattern after strengthening ribs. 如图2a所示,叶片体l为平面板形态,叶片体l还可以是图2b所示的纹面板形态。 2a, the blade body is a planar sheet form l, l vanes may also form the panel pattern shown in FIG. 2b. 叶片体采用纹面板形态时, 该纹面纹路垂直于叶片回转半径,且纹面斜度为5°〜30° 。 When the blade body panel-form pattern, the lines perpendicular to the surface profiling blade radius of gyration, and the profile gradient was 5 ° ~30 °.

加强筋2采用单根加强筋,沿叶片体l中部长径向布置。 2 uses a single bead reinforcing ribs, vanes radially arranged in the Minister of l. 如图3a、 4所示, 加强筋形态可为长条形,垂直叶片体,叶根处高度H二6 mm,沿径向线性递减, 至叶尖处高度h=2 mm。 As shown in FIG 3a, 4, a bead shape can be elongated, vertical blade body, the height H of the blade root two 6 mm, the radial direction linearly decreasing to the tip height h = 2 mm. 加强筋2也可为图3b、 3c所示意形态。 2 may also be a bead FIG. 3b, 3c are schematic form.

制备时,采用复合模具作业,首先将等厚钢板冲压加工成叶片平面展开形状,再进一步压制处所需加强筋雏形和叶片的曲面形状,最后针对不同的加强筋类型分别采用夹扁、折弯、压平等工序获得产品成品。 When preparing composite mold operations, like the first press forming a steel plate into a developed shape blade plane, a desired curved shape reinforcing rib prototype and further pressing the blade, the final flat folder respectively for different types of bead, folded pressure equal process to obtain the finished product.

工作时,三片或多片叶片固定于轮毂上形成叶轮,风力带动叶轮旋转最终带动发电机工作达到发电的目的。 In operation, three or more blades secured to the hub wheel is formed, the wind driven generator rotating impeller driven eventually work to achieve the purpose of power generation. 在同样的风力条件特别在弱风条件下,本实用新型涉及的叶片由于自重小,具有较小惯性,更易于启动运行。 In the same wind conditions particularly at low wind conditions, the blade according to the present invention due to the small weight, have a smaller inertia, it is easier to start the movement.

实施方式2: Embodiment 2:

如图5所示,带冲压成型式加强筋的薄板风能叶片:叶片体1,加强筋2a 和2b。 5, the wind vane with the sheet metal forming the bead of formula: blade body 1, the reinforcing ribs 2a and 2b. 叶片体1直径为1200 mm,以叶片体1的半径方向为径向,径向长度为550 mm,采用等厚钢板或铝合金板冲压成型。 1 blade diameter of 1200 mm, the blade body 1 in the radial direction is the radial direction, the radial length of 550 mm, using other thick steel plate or aluminum alloy plate stamping. 薄板风能叶片叶素截面型线可为直线(图lb所示),也可以是图lc所示的流线型曲线。 Wind vane sheet element may be rectilinear cross-sectional profile (as shown in FIG. Lb), the curve may be streamlined as shown in FIG lc. 这里所谓的叶素截面型线是指忽略叶片厚度和加强筋后叶片的截面形态。 Here, the term blade element cross-sectional profile and thickness of the blade means to ignore the blade section pattern after strengthening ribs. 如图2a所示,叶片体l为平面板形态,叶片体1还可以是图2b所示的纹面板形态。 2a, the blade body l planar plate shape, the blade body 1 in FIG. 2b may also be shown in form of groove panel. 叶片体采用纹面板形态时,该纹面纹路垂直于叶片回转半径,且纹面斜度为5°〜30° 。 When the blade body panel-form pattern, the lines perpendicular to the surface profiling blade radius of gyration, and the profile gradient was 5 ° ~30 °.

加强筋2采用两根加强筋,为长条形,与叶片体l一侧成一锐角,如图3b 所示,沿径向布置,加强筋2a叶根处高度H=6 mm,沿径向线性递减,至叶尖处高度h=2 mm,加强筋2a与叶片体1夹角为45° ;加强筋2b叶根处高度H =4 mm,沿径向线性递减,衰减至径向长度400 mm处高度h=0 mm,加强筋2b 与叶片体1夹角为0。 2 using two reinforcing ribs the reinforcing ribs, an elongated shape, the blade body l side at an acute angle, shown in Figure 3b, radially arranged at the blade root 2a rib height H = 6 mm, the radial linear decreasing to the tip height h = 2 mm, and rib 2a is an angle between the vanes 45 °; height H of the reinforcing rib at the blade root 2b = 4 mm, decreasing in the radial direction linearly decay to the radial length 400 mm at the height h = 0 mm, the vanes 2b and the reinforcing ribs is angle 0 1. .

制备时,采用复合模具作业,首先将等厚钢板冲压加工成叶片平面展开形状,再进一步压制处所需加强筋雏形和叶片的曲面形状,最后针对不同的加强筋类型分别采用夹扁、折弯、压平等工序获得产品成品。 When preparing composite mold operations, like the first press forming a steel plate into a developed shape blade plane, a desired curved shape reinforcing rib prototype and further pressing the blade, the final flat folder respectively for different types of bead, folded pressure equal process to obtain the finished product.

工作时,三片或多片叶片固定于轮毂上形成叶轮,风力带动叶轮旋转并最终带动发电机工作达到发电的目的。 In operation, three or more blades secured to the hub wheel is formed, and finally a wind driven rotating impeller driven generator to achieve the purpose of power generation. 在同样的风力条件特别在弱风条件下,本实用新型涉及的叶片由于自重小,具有较小惯性,更易于启动运行。 In the same wind conditions particularly at low wind conditions, the blade according to the present invention due to the small weight, have a smaller inertia, it is easier to start the movement.

实施方式3: Embodiment 3:

如图6所示,带冲压成型式加强筋的薄板风能叶片:叶片体l,加强筋2a 和2b。 6, with the sheet metal forming the blade-type wind stiffeners: L vanes, stiffeners 2a and 2b. 叶片体1直径为1200 mm,以叶片体1的半径方向为径向,径向长度为550 mm,采用等厚钢板或铝合金板冲压成型。 1 blade diameter of 1200 mm, the blade body 1 in the radial direction is the radial direction, the radial length of 550 mm, using other thick steel plate or aluminum alloy plate stamping. 薄板风能叶片叶素截面型线可为直线(图lb所示),也可以是图lc所示的流线型曲线。 Wind vane sheet element may be rectilinear cross-sectional profile (as shown in FIG. Lb), the curve may be streamlined as shown in FIG lc. 这里所谓的叶素截面型线是指忽略叶片厚度和加强筋后叶片的截面形态。 Here, the term blade element cross-sectional profile and thickness of the blade means to ignore the blade section pattern after strengthening ribs. 如图2a所示,叶片体l为平面板形态,叶片体l还可以是图2b所示的纹面板形态。 2a, the blade body is a planar sheet form l, l vanes may also form the panel pattern shown in FIG. 2b. 叶片体采用纹面板形态时,该纹面纹路垂直于叶片回转半径,且纹面斜度为5°〜30° 。 When the blade body panel-form pattern, the lines perpendicular to the surface profiling blade radius of gyration, and the profile gradient was 5 ° ~30 °.

加强筋2采用多根加强筋,为长条形,垂直叶片体l,沿叶脉状布置,如图6所示。 2 employs a plurality of reinforcing ribs the reinforcing ribs, is elongated, vertical vanes L, along a vein-like arrangement, as shown in FIG. 沿径向布置的加强筋2在叶根处高度H二6 mm,沿径向线性递减,至叶尖处高度h=2 mm;加强筋2b由加强筋2a引出斜向布置,起始处高度与结合处3处高度相等,沿斜向线性递减,衰减至斜向长度260 mm处高度h=0 mm; 加强筋形态也可以为图3b所示倾斜型或图3c所示扁平型。 Radially disposed ribs 2 of the height H of the blade root two 6 mm, the radial direction linearly decreasing to the tip height h = 2 mm; 2b bead 2a from the lead bead is arranged obliquely, the height at the beginning of at the junction of equal height and 3, decreasing linearly in an oblique direction, oblique to the decay length of 260 mm at height h = 0 mm; rib-type shape may be inclined or flat as shown in FIG. 3c as shown in FIG. 3b.

制备时,采用复合模具作业,首先将等厚钢板冲压加工成叶片平面展开形状,再进一步压制处所需加强筋雏形和叶片的曲面形状,最后针对不同的加强筋类型分别采用夹扁、折弯、压平等工序获得产品成品。 When preparing composite mold operations, like the first press forming a steel plate into a developed shape blade plane, a desired curved shape reinforcing rib prototype and further pressing the blade, the final flat folder respectively for different types of bead, folded pressure equal process to obtain the finished product.

工作时,三片或多片叶片固定于轮毂上形成叶轮,风力带动叶轮旋转并最终带动发电机工作达到发电的目的。 In operation, three or more blades secured to the hub wheel is formed, and finally a wind driven rotating impeller driven generator to achieve the purpose of power generation. 在同样的风力条件特别在弱风条件下,本实用新型涉及的叶片由于自重小,具有较小惯性,更易于启动运行。 In the same wind conditions particularly at low wind conditions, the blade according to the present invention due to the small weight, have a smaller inertia, it is easier to start the movement.

Claims (9)

  1. 1、一种带冲压成型式加强筋的薄板风能叶片,包括叶片体,其特征在于:所述叶片体采用等厚金属薄板冲压而成,所述叶片体中部设有至少一根冲压成型式加强筋。 1, with a blade for a wind sheet stamped bead type comprising blade body, characterized in that: said blade body is made of thick metal sheet stamped, etc., the central body is provided with at least one blade-type stamping strengthen tendons.
  2. 2、 如权利要求1所述的带冲压成型式加强筋的薄板风能叶片,其特征在于, 所述的薄板风能叶片叶素截面型线为直线或流线型曲线。 2, the press belt as claimed in claim 1, said sheet forming stiffening ribs wind vane, wherein the vane element sheet wind-sectional profile is straight or curved streamlined.
  3. 3、 如权利要求1所述的带冲压成型式加强筋的薄板风能叶片,其特征在于, 所述的叶片体为平面板形态或纹面板形态;所述纹面纹路垂直于叶片回转半径, 且纹面斜度为5。 3, press belt as claimed in claim 1, said sheet forming stiffening ribs wind vane, wherein the vane body is a flat plate form or shape groove panel; radius of the groove to the blade rotation plane perpendicular to lines, and Tattoos slope of 5. 〜30° 。 ~30 °.
  4. 4、 如权利要求3所述的带冲压成型式加强筋的薄板风能叶片,其特征在于, 所述加强筋为长条形,垂直叶片体。 4, as claimed in claim 3 with a press-molding the sheet-type reinforcing ribs wind vane, wherein said rib is elongated, vertical blades thereof.
  5. 5、 如权利要求1所述的带冲压成型式加强筋的薄板风能叶片,其特征在于, 所述加强筋为长条形,与叶片体一侧成一锐角。 5, as claimed in claim 1, with a press-molding the sheet-type reinforcing ribs wind vane, wherein said rib is elongated, one side of the blade body at an acute angle.
  6. 6、 如权利要求1所述的带冲压成型式加强筋的薄板风能叶片,其特征在于, 所述加强筋为扁平形。 6, the press belt as claimed in claim 1, said sheet forming stiffening ribs wind vane, wherein said rib is flat.
  7. 7、 如权利要求1所述的带冲压成型式加强筋的薄板风能叶片,其特征在于, 所述的加强筋高度由叶根开始沿径向方向逐渐减小或沿斜向往叶片边缘逐渐减小。 7, the press belt as claimed in claim 1, said sheet forming stiffening ribs wind blade, characterized in that the height of the ribs is gradually reduced starting from the blade root in the radial direction or along a diagonal edge of the blade is gradually reduced longing .
  8. 8、 如权利要求1所述的带冲压成型式加强筋的薄板风能叶片,其特征在于, 所述加强筋为2条。 8, the press belt as claimed in claim 1, said sheet forming stiffening ribs wind blade, characterized in that the two stiffeners.
  9. 9、 如权利要求1所述的带冲压成型式加强筋的薄板风能叶片,其特征在于, 所述加强筋为多条,沿叶脉状布置。 9, the press belt as claimed in claim 1, said sheet forming stiffening ribs wind vane, wherein said plurality of stiffeners, are arranged along the vein shape. 2 2
CN 200820202414 2008-10-27 2008-10-27 Thin-slab wind energy blade with rammed stiffening ribs CN201284721Y (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013067916A1 (en) * 2011-11-11 2013-05-16 Zhang Xiangzeng New blade of composite material for horizontal-axis wind power generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013067916A1 (en) * 2011-11-11 2013-05-16 Zhang Xiangzeng New blade of composite material for horizontal-axis wind power generator

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