CN104405592A - Large-scale wind turbine intelligent blade - Google Patents

Large-scale wind turbine intelligent blade Download PDF

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Publication number
CN104405592A
CN104405592A CN 201410551190 CN201410551190A CN104405592A CN 104405592 A CN104405592 A CN 104405592A CN 201410551190 CN201410551190 CN 201410551190 CN 201410551190 A CN201410551190 A CN 201410551190A CN 104405592 A CN104405592 A CN 104405592A
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CN
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Prior art keywords
blade
connected
trailing edge
body
transition section
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CN 201410551190
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Chinese (zh)
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许波峰
袁越
赵振宙
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河海大学
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
    • F05B2240/00Components
    • F05B2240/20Rotors
    • F05B2240/201Rotors using the Magnus-effect

Abstract

The invention discloses a large-scale wind turbine intelligent blade. The intelligent blade comprises a blade body and a tail edge wing flap which is connected with the cutting-off tail edge of the blade body; the tail edge wing flap comprises n divided deflection rubber surfaces, two two-end connecting transition segments and n-1 middle connecting transition segments, wherein n is larger than or equal to 1 and smaller than or equal to 3; the two-end connecting transition segments and the middle connecting transition segments are made of flexible materials; every two adjacent divided deflection rubber surfaces are connected through the corresponding middle connecting transition segment, and therefore the two adjacent divided deflection rubber surfaces and the corresponding middle connecting transition segment are in series connection to form a total deflection rubber surface; and the two ends of the total deflection rubber surface are connected with the blade body through the two-end connecting transition segments. According to the intelligent blade, the two ends of the tail edge wing flap are in smooth transition with the blade body, and the tail edge of the blade is continuous, so that the flow quality of the tail edge is improved. Flow-around flow stability of the blade is improved, deflection of the tail edge wing flap is controlled, and therefore the local aerodynamic load control and overall load optimal control over the blade can be achieved.

Description

—种大型风力机智能叶片 - intelligent species of large wind turbine blades

技术领域 FIELD

[0001] 本发明属于风力发电技术领域,特别涉及了一种大型风力机智能叶片。 [0001] The present invention belongs to the technical field of wind power generation, and particularly relates to a smart large wind turbine blades.

背景技术 Background technique

[0002] 随着风轮尺寸增大,由于大气边界层的风剪切,大型风力机叶片流场特性沿展向分布不均匀性增强,旋转时叶片(尤其是叶片尖部)入流变化会更严重,再加上复杂的多尺度湍流,所以叶片气动载荷无论在空间场还是在时间场,其非定常特性更加显著,疲劳载荷增加,甚至会引起颤振。 [0002] As the rotor size increases, the atmospheric boundary layer due to wind shear, wind turbine blades large spanwise flow field characteristics of the blade (blade tip portion in particular) when the unevenness of the reinforcing profile, inflow changes would be more rotation severe, plus complex multi-scale turbulence, so that the blade aerodynamic loads in both space and time field or in the field, which unsteady characteristics more significantly, increased fatigue loading, even cause flutter. 现有的先进变桨控制技术逐渐表现出以下不足:整个叶片同步调节不能有效控制局部载荷波动,独立变桨惯性大,不经济,易导致变桨装置过渡使用等。 Existing technology is gradually advanced pitch control exhibits the following disadvantages: adjusting synchronization of the entire blade can not effectively control the local load fluctuation, large individual pitch inertia, not economical, easily lead to the excessive use of pitch devices. 因此,具有质轻、惯性小、反应快且能够实现局部控制等优点的“智能叶片”概念被提出。 Thus, a lightweight, low inertia, fast response and enabling the advantages of local control "smart blade" concept has been proposed. 智能叶片可以理解为:基于在叶片局部附加或埋入可以控制叶片流场的作动装置,并按一定的控制律驱动作动装置动作,从而改变风力机系统响应的技术。 Smart blade can be understood as: based on or embedded in the local additional actuating means may control the flow field of the blades, according to a certain control law operation of the drive means for moving, thereby changing the system response art wind turbine blade.

[0003] 现有的尾缘襟翼智能叶片中,尾缘襟翼两端与叶片主体之间存在较大间隙,尾缘襟翼的各分偏转舵面之间存在较大间隙,产生较强的拖体涡对叶片流场的诱导作用不可忽视,流动稳定性问题需要通过控制策略来弥补。 [0003] Existing smart blade trailing edge flaps, there is a large gap between the two ends of the trailing edge flap with the blade body trailing edge flap there is a large gap between the sub-surface steer bias, produce strong vortex induced drag of the blades on the flow field can not be ignored, flow stability issues need to be compensated by the control strategy.

发明内容 SUMMARY

[0004] 为了解决背景技术存在的问题,本发明旨在提供一种大型风力机智能叶片,该叶片的尾缘襟翼两端与叶片主体平滑过渡,叶片尾缘连续,从而改善了尾缘流动品质,提高了叶片绕流流动稳定性,并通过对尾缘襟翼的偏转控制,实现叶片局部气动载荷控制和整体载荷最优控制。 [0004] To solve the problems in the background art, the present invention aims to provide a smart large wind turbine blade, the blade trailing edge flaps at both ends of the body smooth transition of the blade, the blade trailing edge continuously, thereby improving the flow of the trailing edge quality, improve the stability of flow around the blades, and by controlling the deflection of the trailing edge flap, to achieve local aerodynamic blade load control and overall optimal control load.

[0005] 为了实现上述技术目的,本发明的技术方案为: [0005] To achieve the above technical object, the technical solution of the present invention is:

[0006] 一种大型风力机智能叶片,包含叶片主体,还包含与叶片主体截断尾缘连接的尾缘襟翼,所述尾缘襟翼包含II个分偏转舵面、2个两端连接过渡段以及11-1个中间连接过渡段,其中,1 ‹ ‹ 3,所述两端连接过渡段和中间连接过渡段均为柔性材料制成;相邻分偏转舵面之间经中间连接过渡段连接,从而串联为1个总偏转舵面,总偏转舵面的两端分别经两端连接过渡段与叶片主体连接。 [0006] A large wind turbine blade intelligence, comprising a blade body, the blade body further comprising a truncated trailing edge flap connected to the trailing edge, the trailing edge flaps comprises a sub-II steering partial surface, two connecting ends transition and a connection section intermediate transition section 11-1, wherein 1 <<3, the transition section connected at both ends and an intermediate transition section are connected to a flexible material; connected via adjacent intermediate points between the partial surface steer transition section connected in series so as a total steering partial surface, the total surface of the biasing steer ends are connected to both ends via the transition section and the main blade body.

[0007] 其中,上述尾缘襟翼的顶端至叶片主体尖部的距离为叶片主体长度的10%,尾缘襟翼的末端至叶片主体尖部的距离为叶片主体长度的20%〜30%。 [0007] wherein the distal end of the trailing edge flap to the tip of the blade body a distance of 10% of the blade length of the body, the tip trailing-edge flap to the tip of the blade body a distance of 20% ~ 30% of the blade length of the body .

[0008] 其中,上述两端连接过渡段在未形变时呈三角形,该三角形与叶片主体连接的一边与其作为整个叶片尾缘的一边的夹角为30。 [0008] wherein said transition section connecting both ends of triangular shape when undeformed, and the triangle side blade body connected thereto as a whole angle of the trailing edge side of the blade 30. 〜45。 ~ 45. .

[0009] 其中,上述分偏转舵面为梯形机翼,其弦长占当地叶片弦长的10%,其剖面翼型为对称翼型,其绝对厚度与叶片主体截断尾缘处的厚度相同。 [0009] wherein said separate bias steer the same surface a trapezoidal wing, the chord length of 10% of the local chord of the blade, the airfoil cross-section which is symmetrical airfoil, the absolute thickness of the cutoff blade body trailing edge thickness.

[0010] 其中,上述中间连接过渡段在未形变时呈矩形,其长度为分偏转舵面长度的1/5。 [0010] wherein the intermediate connector has a rectangular transition section when undeformed, a length of the partial sub-surface length steer 1/5.

[0011] 采用上述技术方案带来的有益效果: [0011] By adopting the technical scheme beneficial effects:

[0012] 本发明采用柔性材料制成的两端连接过渡段,使得在尾缘襟翼偏转时尾缘襟翼两端与叶片主体间没有间隙,采用柔性材料制成的中间连接过渡段,使得在分偏转舵面偏转不同角度时之间没有间隙,结构上的平滑过渡使得流体流过过渡段不会拖出较强的拖体涡来影响流场,流动稳定性增强,解决了风力机超大型化后带来的叶片极限和疲劳载荷问题,延长了叶片使用寿命,提高了风力机发电量,为整机厂商及风电场带来可观的经济效益,同时能够降低发电成本。 [0012] The present invention employs a flexible material connected to both ends of the transition section, such that when the trailing edge flap deflections without a gap between both ends of the trailing edge flap with the blade body, the use of flexible material connected to the intermediate transition section, such that when the bias is not steered division surface different deflection angles between the gap, the smooth transition of fluid flow through the structure so that the transition section is not dragged out of strong eddy to influence the flow field, enhanced flow stability, solves the wind turbine super blade fatigue load limit and the large-scale problems caused by prolonged blade service life, improved wind turbine generating capacity, bring considerable economic benefits for machine manufacturers and wind farm, while reducing the cost of power generation.

附图说明 BRIEF DESCRIPTION

[0013] 图1为本发明实施例1的结构示意图。 [0013] Figure 1 schematic structural diagram of an embodiment of the invention.

[0014] 图2为本发明实施例1尾缘襟翼动作示意图。 [0014] Figure 2 a schematic embodiment of the operation of edge flap of the present invention.

[0015] 图3为本发明实施例2的结构示意图。 [0015] FIG. 3 schematic structural diagram of embodiment 2 of the present invention.

[0016] 图4为本发明实施例2尾缘襟翼动作示意图。 [0016] FIG edge flap 4 Example 2 a schematic embodiment of the operation of the present invention.

[0017] 标号说明:1、叶片主体;2、分偏转舵面;3、两端连接过渡段;4、中间连接过渡段;5、叶片主体截断尾缘;11、尾缘襟翼的顶端至叶片主体尖部的距离;12、尾缘襟翼的末端至叶片主体尖部的距离;31、中间连接过渡段的长度。 [0017] Description of Reference Numerals: 1, the blade body; 2, partial sub-steered surface; 3, both ends of the transition section are connected; 4, connected to the intermediate transition section; 5, truncated blade body trailing edge; 11, to the top of the trailing edge flap the blade body portion from the tip; 12, tip trailing-edge flap to the tip portion of the blade body distance; 31, intermediate the length of the transition section are connected.

具体实施方式 Detailed ways

[0018] 以下将结合附图,对本发明的技术方案进行详细说明。 [0018] conjunction with the following drawings, the technical solutions of the present invention will be described in detail.

[0019] 实施例1: [0019] Example 1:

[0020] 如图1所示本发明实施例1的结构示意图,一种大型风力机智能叶片,包含叶片主体1以及与叶片主体截断尾缘5连接的尾缘襟翼,所述尾缘襟翼包含3个分偏转舵面2、2个两端连接过渡段3以及2个中间连接过渡段4。 [0020] The present invention shown in FIG. 1 is a schematic diagram of the structure of embodiment A smart large wind turbine blade, comprising a blade body and trailing edge cut and blade body 5 connected to the trailing edge flap, the trailing edge flap It contains three sub-surface biasing the steer transition piece connected to both ends 2, 2 3 and 2 4 transition section intermediate connector. 所述两端连接过渡段3和中间连接过度段4均为柔性材料制成;相邻分偏转舵面2之间经中间连接过渡段4连接,从而串联为1个总偏转舵面,总偏转舵面的两端分别经两端连接过渡段3与叶片主体1连接。 The transition section connecting both ends 3 and 4 are connected to the intermediate segments are made of a flexible material, excessive; Partial adjacent points steer through the intermediate connector 24 is connected between the transition section, so that a series of partial total steering surface, the total deflection control surfaces at both ends are connected to both ends via transition section 3 is connected to the blade body 1.

[0021] 在实施例1中,尾缘襟翼的顶端至叶片主体尖部的距离11为叶片主体长度的10%,尾缘襟翼的末端至叶片主体尖部的距离12为叶片主体长度的30%。 [0021] In Example 1, the top flap to the trailing edge from the blade tip portion 11 of the body 10% of the blade length of the body, to the end of the trailing edge flap from the blade body 12 as the tip portion of the length of the blade body 30%. 分偏转舵面2为梯形机翼,其弦长占当地叶片弦长的10%,其剖面翼型为对称翼型,其绝对厚度与叶片主体截断尾缘5处的厚度相同。 Partial Partial steering trapezoidal wing surface 2, 10% of the chord length of the local chord of the blade, the airfoil cross-section which is symmetrical airfoil, the absolute thickness of the blade body trailing edge 5 cut the same thickness. 在本领域中,弦长的定义:在翼型轮廓线上的诸多点中,有一点与翼型的后缘的距离最大,该点称为翼型的前缘,连接前缘和后缘的直线段称为翼型的弦线,其长度称为弦长。 In the present art, the definition of the chord length: airfoil profile in many points in the line, the maximum distance a little trailing edge of the airfoil, the airfoil leading edge point is called, connected to the leading and trailing edges straight line segment is called chord line of the airfoil, which is called the length of the chord length. 当地叶片弦长的定义:整个叶片径向位置处的叶片剖面翼型的弦长。 Define local blade chord length: cross-section of the airfoil blade at the radial position of the entire blade chord length. 对称翼型的定义:翼型上下弧线对称的翼型。 Symmetric airfoil definition: an airfoil arc vertically symmetrical airfoil. 绝对厚度的定义:垂直于翼型弦线的翼型上下表面之间的直线段长度是翼型的厚度,翼型的最大厚度称为该翼型的绝对厚度。 Absolute thickness defined: the straight line perpendicular to the length between the upper and lower surfaces of the airfoil chord line of the airfoil to airfoil thickness, airfoil maximum thickness of the airfoil is called absolute thickness. 两端连接过渡段3在未形变时呈三角形,该三角形与叶片主体连接的一边与其作为整个叶片尾缘的一边的夹角13为30。 Both ends of the transition section 3 is connected triangular shape when undeformed, and the triangle side blade body connected thereto as a whole angle side trailing edge 13 of blade 30. . 中间连接过渡段4在未形变时呈矩形,其长度31为分偏转舵面2长度的1/5。 An intermediate transition section 4 connected to a rectangular shape when undeformed, a length of 31 minutes length 2 1/5 bias the steer plane.

[0022] 如图2所示本发明实施例1尾缘襟翼动作示意图,3段分偏转舵面2可以单独控制单独偏转来实现叶片局部气动载荷控制和整体载荷最优控制。 [0022] The present invention, as shown in FIG. 2 an embodiment of a schematic embodiment of the operation of edge flap, the biasing steer 3 minutes segment surface 2 can be individually controlled to achieve a single blade deflection local aerodynamic load control and optimal overall loading control. 两端连接过渡段3使得在尾缘襟翼偏转时尾缘襟翼两端与叶片主体间没有间隙,中间连接过渡段4使得在分偏转舵面偏转不同角度时之间没有间隙,结构上的平滑过渡使得流体流过过渡段不会拖出较强的拖体涡来影响流场,流动稳定性增强。 Ends of the connection section 3 such that the transition at the trailing edge flap deflections without a gap between both ends of the trailing edge flap with the blade body, connected to the intermediate transition section 4 such that no gap in the distributor biasing steer angles between the different deflecting surface, the structure a smooth transition through the transition section such that fluid flows out of the strong not to influence the eddy drag flow field, enhanced flow stability.

[0023] 实施例2: [0023] Example 2:

[0024] 如图3所示本发明实施例2的结构示意图,一种大型风力机智能叶片,包含叶片主体1以及与叶片主体截断尾缘5连接的尾缘襟翼,所述尾缘襟翼包含1个分偏转舵面2和2个两端连接过渡段3。 Schematic structural diagram of embodiment 2 [0024] As shown in FIG. 3 of the present invention, a large wind turbine blade intelligence, comprising a blade body and trailing edge cut and blade body 5 connected to the trailing edge flap, the trailing edge flap comprising a steering bias points and two end faces 2 transition section 3 is connected. 所述两端连接过渡段3为柔性材料制成;分偏转舵面2的两端分别经两端连接过渡段3与叶片主体1连接。 The transition section 3 is connected to both ends made of a flexible material; both end points were 2 partial steer surface via a transition section connecting both ends of the blade 3 is connected to the main body 1.

[0025] 在实施例2中,尾缘襟翼的顶端至叶片主体尖部的距离11为叶片主体长度的10%,尾缘襟翼的末端至叶片主体尖部的距离12为叶片主体长度的20%。 [0025] In Example 2, the tip trailing-edge flap to the main body from the tip portion 11 of the blade 10% of the blade length of the body, from the tip end of the blade body trailing edge flap 12 to the blade length of the body 20%. 分偏转舵面2为梯形机翼,其弦长占当地叶片弦长的10%,其剖面翼型为对称翼型,其绝对厚度与叶片主体截断尾缘5处的厚度相同。 Partial Partial steering trapezoidal wing surface 2, 10% of the chord length of the local chord of the blade, the airfoil cross-section which is symmetrical airfoil, the absolute thickness of the blade body trailing edge 5 cut the same thickness. 两端连接过渡段3在未形变时呈三角形,该三角形与叶片主体连接的一边与其作为整个叶片尾缘的一边的夹角13为30。 Both ends of the transition section 3 is connected triangular shape when undeformed, and the triangle side blade body connected thereto as a whole angle side trailing edge 13 of blade 30. . 中间连接过渡段4在未形变时呈矩形,其长度51为分偏转舵面2长度的1/5。 An intermediate transition section 4 connected to a rectangular shape when undeformed, a length of 51 minutes length 2 1/5 bias the steer plane. 如图4所示本发明实施例2尾缘襟翼动作示意图,通过控制分偏转舵面2偏转来实现叶片局部气动载荷控制和整体载荷最优控制。 Edge flap operation two cases schematic embodiment shown in FIG. 4 of the present invention, by controlling the partial deflection of the biasing steer plane 2 to achieve local aerodynamic blade load control and overall optimal control load. 两端连接过渡段3使得在尾缘襟翼偏转时尾缘襟翼两端与叶片主体间没有间隙,结构上的平滑过渡使得流体流过过渡段不会拖出较强的拖体涡来影响流场,流动稳定性增强。 Ends of the connection section 3 such that the transition at the trailing edge flap deflections without a gap between both ends of the trailing edge flap with the blade body, the smooth transition of fluid flow through the structure so that the transition section is not dragged out of strong eddy affect flow field, enhanced flow stability.

[0026] 超大尺寸的风力机叶片旋转时,由于大气边界层的风剪切,叶片流场特性沿展向分布不均匀性增强,叶片靠近尖部的入流特性随时间变化幅度也增大,使得叶片极限与疲劳载荷严重增加。 [0026] When the wind turbine blades rotating oversized, since the atmospheric boundary layer wind shear, blade spanwise flow field characteristics of the uneven distribution of reinforcement, the inflow characteristics of the blade near the tip portion of the time-varying amplitude also increases, such that severe fatigue limit and blade load increases. 采用尾缘襟翼的风力机叶片,可以快速、灵敏、经济地调节叶片局部载荷,使载荷沿空间和时间的变化变得平缓。 Using the trailing edge flap of a wind turbine blade, it can be rapid, sensitive, economical partial load adjusting the blade, so that the change in the load space and time becomes gentle. 采用柔性材料制成的两端连接过渡段和中间连接过渡段,使得近尾迹区过渡段下游涡量极值比无过渡段时大为降低,有效减弱下游拖体涡的诱导作用。 Made of flexible material connected at both ends and an intermediate transition section connected to the transition section, the transition section so that the downstream vorticity extrema near wake zone ratio is greatly reduced without a transition period, effective to attenuate the induction of downstream tow Vortex.

[0027] 将偏转舵面分段,使局部载荷控制更合理高效,如果段数太多,控制效果不见得有大幅提高,却会带来结构和制作工艺上的困难,因此段数不必超过3。 [0027] The biasing segment steering surface, the local load control is more rational and efficient, if the number of segments too much, the control effect is not necessarily a substantial increase, but it will be difficult in structure and fabrication process, the number of stages and therefore do not have more than three. 此外,角太小,会破坏更多的叶片主体结构,角13太大则气流平滑过渡效果降低,因此选择在30。 Further, the angle is too small, the body destroys the structure more blades, the angle 13 is too large to reduce the gas flow effects a smooth transition, therefore selected to be 30. 〜45。 ~ 45. 之间。 between.

[0028] 以上实施例仅为说明本发明的技术思想,不能以此限定本发明的保护范围,凡是按照本发明提出的技术思想,在技术方案基础上所做的任何改动,均落入本发明保护范围之内。 [0028] The above embodiments are merely illustrative of the technical idea of ​​the present invention, in order not to limit the scope of the present invention, all made in accordance with the technical idea of ​​the present invention, any changes made on the basis of the aspect, the present invention fall within the within the scope of protection.

Claims (5)

  1. 1.一种大型风力机智能叶片,包含叶片主体,其特征在于:还包含与叶片主体截断尾缘连接的尾缘襟翼,所述尾缘襟翼包含η个分偏转舵面、2个两端连接过渡段以及η-1个中间连接过渡段,其中,I < η ( 3,所述两端连接过渡段和中间连接过度段均为柔性材料制成;相邻分偏转舵面之间经中间连接过渡段连接,从而串联为I个总偏转舵面,总偏转舵面的两端分别经两端连接过渡段与叶片主体连接。 A large wind turbine blade intelligence, comprising a blade body, characterized by: further comprising a truncated trailing edge and a trailing edge flap connected to the blade body, the trailing edge flaps comprises a sub-η steering partial surface, two 2 end of the transition section and is connected intermediate connecting η-1 transition section, where, I <η (3, both ends of the transition section and the intermediate connecting section are connected over a flexible material; steered by the partial surface between the adjacent points intermediate connection transition section connected in series so as to steer I total partial surface, the total surface of the biasing steer ends are connected to both ends via the transition section and the main blade body.
  2. 2.根据权利要求1所述一种大型风力机智能叶片,其特征在于:所述尾缘襟翼的顶端至叶片主体尖部的距离为叶片主体长度的10%,尾缘襟翼的末端至叶片主体尖部的距离为叶片主体长度的20%〜30%。 1 according to the one of large wind turbine blade as claimed in claim smart, wherein: said trailing edge flap to the top 10% of the distance to the tip portion of the blade body of the blade length of the body, to the end of the trailing edge flap blade body portion from the tip is 20% ~ 30% of the body length of the blade.
  3. 3.根据权利要求1所述一种大型风力机智能叶片,其特征在于:所述两端连接过渡段在未形变时呈三角形,该三角形与叶片主体连接的一边与其作为整个叶片尾缘的一边的夹角为30。 According to the claim 1. A large wind turbine blade intelligent claim, wherein: said transition section connecting both ends of triangular shape when undeformed, and the triangle side blade body connected thereto as a whole while the trailing edge of the blade the angle of 30. 〜45。 ~ 45. .
  4. 4.根据权利要求1所述一种大型风力机智能叶片,其特征在于:所述分偏转舵面为梯形机翼,其弦长占当地叶片弦长的10%,其剖面翼型为对称翼型,其绝对厚度与叶片主体截断尾缘处的厚度相同。 According to the claim 1. A large wind turbine blade intelligent claim, wherein: said surface is divided partial steered trapezoidal wing, the chord length of 10% of the local chord of the blade, the airfoil cross-section which is symmetrical wings type, which is absolutely the same as the thickness of the blade body trailing edge cut at a thickness.
  5. 5.根据权利要求1所述一种大型风力机智能叶片,其特征在于:所述中间连接过渡段在未形变时呈矩形,其长度为分偏转舵面长度的1/5。 According to the claim 1. A large wind turbine blade intelligent claim, wherein: said transition section has a rectangular intermediate connection when not deformed, has a length of 1/5 bias points of the steering surface length.
CN 201410551190 2014-10-16 2014-10-16 Large-scale wind turbine intelligent blade CN104405592A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1314885A1 (en) * 2001-11-26 2003-05-28 Bonus Energy A/S Flexible serrated trailing edge for wind turbine rotor blade
WO2010043645A2 (en) * 2008-10-14 2010-04-22 Vestas Wind Systems A/S Wind turbine blade with device for changing the aerodynamic surface or shape
CN102112734A (en) * 2008-08-01 2011-06-29 维斯塔斯风力系统集团公司 Rotor blade extension portion having skin located over framework
CN102312770A (en) * 2010-07-06 2012-01-11 Lm 玻璃纤维制品有限公司 Wind turbine blade with variable trailing edge
CN102459876A (en) * 2009-04-30 2012-05-16 维斯塔斯风力系统有限公司 Wind turbine rotor blade

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1314885A1 (en) * 2001-11-26 2003-05-28 Bonus Energy A/S Flexible serrated trailing edge for wind turbine rotor blade
CN102112734A (en) * 2008-08-01 2011-06-29 维斯塔斯风力系统集团公司 Rotor blade extension portion having skin located over framework
WO2010043645A2 (en) * 2008-10-14 2010-04-22 Vestas Wind Systems A/S Wind turbine blade with device for changing the aerodynamic surface or shape
CN102459876A (en) * 2009-04-30 2012-05-16 维斯塔斯风力系统有限公司 Wind turbine rotor blade
CN102312770A (en) * 2010-07-06 2012-01-11 Lm 玻璃纤维制品有限公司 Wind turbine blade with variable trailing edge

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