CN103470445A - Device for increasing rigidity of blades of wind turbine generator - Google Patents

Device for increasing rigidity of blades of wind turbine generator Download PDF

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Publication number
CN103470445A
CN103470445A CN 201310466571 CN201310466571A CN103470445A CN 103470445 A CN103470445 A CN 103470445A CN 201310466571 CN201310466571 CN 201310466571 CN 201310466571 A CN201310466571 A CN 201310466571A CN 103470445 A CN103470445 A CN 103470445A
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CN
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Prior art keywords
blades
stay
cables
wind
generator
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CN 201310466571
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Chinese (zh)
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潘爱华
王安正
于长生
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南京风电科技有限公司
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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

Abstract

The invention discloses a device for increasing the rigidity of blades of a wind turbine generator. The wind turbine generator comprises a tower, a hub and the blades. The hub is arranged on the tower. The blades are arranged on the hub. The wind turbine generator further comprises supporting rods and stay cables. One ends of the supporting rods are fixed on the blades. The other ends of the supporting rods are connected with one ends of the stay cables, and the other ends of the stay cables are fixed on the blades. The joints of the stay cables and the blades are the roots of the blades. According to the device for increasing the rigidity of the blades of the wind turbine generator, the stay cables and the supporting rods are additionally arranged on the blades, when bearing air loads of wind flow, the blades bear the reversed tension effect of the stay cables, therefore, the rigidity of the blades can be effectively increased, the flexibility of the blades is reduced, and the blades are prevented from being collided with the tower. Therefore, the dip angle and the taper angle of the blades do not need to be increased, generating capacity is increased, or/and a method for increasing blade materials is eliminated, the weight of the blades can be reduced, and cost is lowered.

Description

—种风电机组叶片刚度提高装置 - kind of wind turbine blades to improve the rigidity of the device

技术领域 FIELD

[0001 ] 本发明涉及一种风电机组叶片刚度提高装置。 [0001] The present invention relates to a blade for a wind turbine to improve the rigidity of the device.

背景技术 Background technique

[0002] 随着我国风能技术的提高,风电机组安装在低风速区变得成为现实,为捕获更多的低风速区的风能,风电机组的叶轮(轮毂和叶片,叶片安装在轮毂上)直径和塔架的高度变得很大,因此叶片的刚度会变小。 [0002] With the improvement of wind energy technology of wind turbines installed in the low speed region to become a reality, to capture wind energy, the impeller of wind turbines more low wind speed region (hub and blades, the blades mounted on the hub) diameter and the height of the tower becomes large, so the stiffness of the blade becomes smaller. 在风电机组发电过程中,叶片受到很大的气动推力载荷,造成叶片沿着气流的方向摆动,为防止叶片叶尖撞到塔架上,通常采用增大叶片的倾角、锥角的方法,使得叶片叶尖远离塔架,但是降低了叶片的有效扫风面积,从而降低了机组的发电性能。 In wind turbine power generation process, the blade is greatly aerodynamic thrust load, causing the blade to pivot in the direction of gas flow, in order to prevent blade tip hit the tower, usually increase the inclination angle of the blade, the method taper angle, such that blade tip away from the tower, but reduce the effective swept area of ​​the blades, thereby reducing the power generation performance of the unit. 也可以采用增加叶片材料的方法,来提高叶片的刚度,造成叶片的质量增力口,同时也增加了机组的重力和惯性载荷。 The method of increasing the blade material may also be employed to increase the stiffness of the blade, resulting in the quality of booster vanes port, the unit also increases the gravity and inertial loads.

[0003] 因此,需要一种新的风电机组叶片刚度提高方法以解决上述问题。 [0003] Accordingly, a need for a new wind turbine blade stiffness in order to solve the above problems to improve the method.

发明内容 SUMMARY

[0004] 本发明针对现有技术中风电机组叶片刚度不足的缺陷,提供一种风电机组叶片刚 [0004] The present invention is directed to the inadequate stiffness of the blade stroke prior art turbine defect, there is provided a wind turbine blade has just

度提高装置。 It means the degree of increase.

[0005] 为解决上述技术问题,本发明的风电机组叶片刚度提高装置所采用的技术方案为: [0005] In order to solve the above problems, stiffness of the blade wind turbine of the present invention to improve the technical solutions adopted for the device:

一种风电机组叶片刚度提高装置,所述风电机组包括塔架、轮毂和叶片,所述轮毂设置在所述塔架上,所述叶片设置在所述轮毂上,其特征在于:还包括支撑杆和斜拉锁,所述支撑杆的一端固定在所述叶片上,所述支撑杆的另一端连接所述斜拉锁的一端,所述斜拉锁的另一端固定在所述叶片上,其中一个所述斜拉锁与所述叶片的连接处为所述叶片的根部。 A wind turbine blade stiffness increasing device, the wind turbine includes a tower, a hub and blades, said hub disposed on the tower, the blades disposed on the hub, characterized by: further comprising a support rod and oblique lock, one end of the support bar is fixed to the blade, the other end of the support bar is connected to one end of the oblique lock, said lock further oblique end fixed to said blade, wherein said a oblique connection is a lock with the blade root of the blade.

[0006] 更进一步的,与每个所述支撑杆连接的所述斜拉锁的数量为3个。 [0006] Further still, the number of each of said support rods of said oblique locking connection is three.

[0007] 更进一步的,另一个所述斜拉锁与所述叶片的连接处为所述叶片的叶尖。 [0007] Still further, the other of the oblique locking connection with the blade of the blade tip. 叶片刚度提升效果较好。 Enhance the stiffness of the blade better.

[0008] 更进一步的,所述支撑杆与所述叶片的连接处为所述叶片的中部。 [0008] Furthermore, the middle of the support rod and the blade connection to the blade. 叶片刚度提升效果较好。 Enhance the stiffness of the blade better.

[0009] 更进一步的,所述支撑杆的长度为15-20cm。 [0009] Still further, the length of the support bar 15-20cm. 支撑效果较好。 Better support.

[0010] 有益效果:本发明的风电机组叶片刚度提高装置在叶片上增加斜拉索和支撑杆,当叶片受到来流风的气动载荷时,叶片受到斜拉索的反向拉力作用,可以有效提高叶片的刚度,从而减小了叶片的挠度,防止撞到塔架上。 [0010] Advantageous Effects: stiffness of the blade wind turbine of the present invention to improve the apparatus and increase of cable support bar on the blade, blade aerodynamic load when subjected to wind flow, blade by the reverse pulling force of cable, can improve the blade stiffness, thereby reducing the deflection of the blade, preventing hit the tower. 这样不需要增大叶片的倾角、锥角,从而提高发电量,或/和增加叶片材料的方法,可以减小叶片的重量,降低成本。 This eliminates the need to increase blade angle, cone angle, thereby increasing the power generation amount, and / or methods to increase the blade material, the weight of the blade can be reduced, to reduce costs.

附图说明 BRIEF DESCRIPTION

[0011] 图1是风电机组叶片刚度提高装置的结构示意图。 [0011] FIG. 1 is a schematic structural diagram of the wind turbine blades to improve the rigidity of the device. 具体实施方式 detailed description

[0012] 下面结合附图和具体实施例,进一步阐明本发明,应理解这些实施例仅用于说明本发明而不用于限制本发明的范围,在阅读了本发明之后,本领域技术人员对本发明的各种等价形式的修改均落于本申请所附权利要求所限定的范围。 [0012] conjunction with the accompanying drawings and the following specific examples further illustrate the invention, it should be understood that these embodiments are illustrative only and the present invention is not intended to limit the scope of the present invention, after reading this disclosure, those skilled in the art of the present invention various modifications are equivalents fall within the present application as defined in the appended claims scope.

[0013] 如图1所示,本发明的风电机组叶片刚度提高装置,风电机组包括塔架5、轮毂2和叶片1,轮毂2设置在塔架5上,叶片I设置在轮毂2上。 [0013] 1, the stiffness of the blade wind turbine of the present invention to improve the apparatus, the wind turbine includes a tower 5, the hub 2 and the blade 1, the hub 2 is provided on the tower 5, the blade I is provided in the hub 2. 叶片刚度提高装置包括支撑杆3和斜拉锁4,支撑杆3的一端固定在叶片I上,支撑杆3的另一端连接斜拉锁4的一端。 Blade means comprises a support bar 3 increased stiffness and oblique lock 4, one end of the support bar 3 is fixed to the blade I, the other end of the support bar 3 is connected to one end of the lock 4 is oblique. 优选的,与每个支撑杆3连接的斜拉锁4的数量为3个。 Preferably, the number of oblique lock connection with each support bar 34 is three. 斜拉锁4的另一端固定在叶片I上。 The other end of the cable-stayed lock 4 is fixed to the blade I. 其中一个斜拉锁4与叶片I的连接处为叶片I的根部。 4 wherein a junction with oblique locking the blade root of the blade is I I,. 另一个斜拉锁4与叶片I的连接处为叶片I的叶尖。 Another oblique locking connection with the blade 4 is I I blade tip. 优选的,支撑杆3与叶片I的连接处为叶片I的中部。 Preferably, the support rods 3 are connected at the blade I is I, middle leaves. 叶片刚度提升效果较好。 Enhance the stiffness of the blade better. 优选的,支撑杆3的长度为15-20cm。 Preferably, the length of the support bar 3 is 15-20cm. 支撑效果较好。 Better support.

[0014] 发明原理:其中一个斜拉索的一端固定在叶片叶尖和/或其它地方,另一个斜拉锁的一端固定在叶片根部和/或其它地方。 [0014] The principles of the invention: one end of cable is fixed to a blade tip and / or elsewhere, the other end is fixed to the lock oblique blade root and / or elsewhere. 斜拉索与支撑杆均在叶片上,因此,不影响叶片的变桨,当风速超过风电机组的额定风速时,叶片绕其轴转动,减小风能的捕获,减小机组的气动推力。 Stay cable on the blade support bars are, therefore, does not affect the pitch of the blade, when the wind speed exceeds a rated wind speed of the wind turbine blade is rotated about its axis, reducing wind energy capture, to reduce the aerodynamic thrust unit.

[0015] 本发明的风电机组叶片刚度提高装置在叶片上增加斜拉索和支撑杆,当叶片受到来流风的气动载荷时,叶片受到斜拉索的反向拉力作用,可以有效提高叶片的刚度,从而减小了叶片的挠度,防止撞到塔架上。 [0015] The stiffness of the wind turbine blade of the present invention to improve the apparatus and increase of cable support bar on the blade, blade aerodynamic load when subjected to wind flow, subjected to a reverse pulling force of cable blades, can effectively increase the stiffness of the blade , thereby reducing the deflection of the blade, preventing hit the tower. 这样不需要增大叶片的倾角、锥角,从而提高发电量,或/和增加叶片材料的方法,可以减小叶片的重量,降低成本。 This eliminates the need to increase blade angle, cone angle, thereby increasing the power generation amount, and / or methods to increase the blade material, the weight of the blade can be reduced, to reduce costs.

Claims (5)

  1. 1.一种风电机组叶片刚度提高装置,所述风电机组包括塔架(5)、轮毂(2)和叶片(1),所述轮毂(2 )设置在所述塔架(5 )上,所述叶片(I)设置在所述轮毂(2 )上,其特征在于:还包括支撑杆(3)和斜拉锁(4),所述支撑杆(3)的一端固定在所述叶片(I)上,所述支撑杆(3 )的另一端连接所述斜拉锁(4 )的一端,所述斜拉锁(4 )的另一端固定在所述叶片(I)上,其中一个所述斜拉锁(4)与所述叶片(I)的连接处为所述叶片(I)的根部。 A blade stiffness improved wind turbine apparatus comprising a wind turbine tower (5), the hub (2) and the blade (1), said hub (2) disposed in the tower (5), the said blade (I) is provided in the hub (2), characterized by: further comprising a support rod (3) and a cable-stayed lock (4), the support bar (3) fixed to one end of the blade (I) on the support bar (3) connected to the other end of said oblique end lock (4), and the other of the oblique lock (4) is fixed to the end of the blade (the I), wherein one of said oblique lock ( 4) of the blade (I) is connected at a root of the blade (I) is.
  2. 2.如权利要求1所述的风电机组叶片刚度提高装置,其特征在于:与每个所述支撑杆(3)连接的所述斜拉锁(4)的数量为3个或5个。 2. The stiffness of the wind turbine blade as claimed in claim 1, improved apparatus, wherein: the number of the oblique lock (4) connected to each of said support rod (3) is 3 or 5.
  3. 3.如权利要求2所述的风电机组叶片刚度提高装置,其特征在于:另一个所述斜拉锁(4)与所述叶片(I)的连接处为所述叶片(I)的叶尖。 3. The wind turbine blade stiffness of the improved apparatus of claim 2, wherein: the other of said oblique lock (4) and the blade (I) is connected at the tip of the blade (I) is.
  4. 4.如权利要求2所述的风电机组叶片刚度提高装置,其特征在于:所述支撑杆(3)与所述叶片(I)的连接处为所述叶片(I)的中部。 4. The stiffness of the wind turbine blades to improve the apparatus of claim 2, wherein: said connection support rod (3) and the blade (I) is a central portion of the blade (I) is.
  5. 5.如权利要求2所述的风电机组叶片刚度提高装置,其特征在于:所述支撑杆(3)的长度为15_20cm。 5. The stiffness of the wind turbine blades to improve the apparatus of claim 2, wherein: the length of the support bar (3) is 15_20cm.
CN 201310466571 2013-10-09 2013-10-09 Device for increasing rigidity of blades of wind turbine generator CN103470445A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104612896A (en) * 2014-12-12 2015-05-13 西北工业大学 Offshore wind power generation typhoon-resistance control system
CN105298741A (en) * 2015-11-03 2016-02-03 周方 Reinforced blade for wind driven generator
CN105298740A (en) * 2015-11-03 2016-02-03 周方 Rotor strengthening device of wind driven generator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606359A1 (en) * 1996-02-12 1997-08-14 Helmut Maas Rotor holder-support for wind power generator
CN101418774A (en) * 2007-10-22 2009-04-29 黄金伦 Method for lightening prior three-blade wind wheel
CN101652565A (en) * 2007-03-14 2010-02-17 维达尔·霍尔莫伊 Wind turbine rotor
CN102434384A (en) * 2011-11-11 2012-05-02 张向增 Novel composite material blade of horizontal shaft wind generating set
CN203499914U (en) * 2013-10-09 2014-03-26 南京风电科技有限公司 Wind turbine generator vane rigidity improving device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606359A1 (en) * 1996-02-12 1997-08-14 Helmut Maas Rotor holder-support for wind power generator
CN101652565A (en) * 2007-03-14 2010-02-17 维达尔·霍尔莫伊 Wind turbine rotor
CN101418774A (en) * 2007-10-22 2009-04-29 黄金伦 Method for lightening prior three-blade wind wheel
CN102434384A (en) * 2011-11-11 2012-05-02 张向增 Novel composite material blade of horizontal shaft wind generating set
CN203499914U (en) * 2013-10-09 2014-03-26 南京风电科技有限公司 Wind turbine generator vane rigidity improving device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104612896A (en) * 2014-12-12 2015-05-13 西北工业大学 Offshore wind power generation typhoon-resistance control system
CN105298741A (en) * 2015-11-03 2016-02-03 周方 Reinforced blade for wind driven generator
CN105298740A (en) * 2015-11-03 2016-02-03 周方 Rotor strengthening device of wind driven generator

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