CN101418774B - Weight reduced three-blade wind wheel - Google Patents

Weight reduced three-blade wind wheel Download PDF

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Publication number
CN101418774B
CN101418774B CN 200710156345 CN200710156345A CN101418774B CN 101418774 B CN101418774 B CN 101418774B CN 200710156345 CN200710156345 CN 200710156345 CN 200710156345 A CN200710156345 A CN 200710156345A CN 101418774 B CN101418774 B CN 101418774B
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CN
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Grant
Patent type
Prior art keywords
blade
tip
wind wheel
wind
foot
Prior art date
Application number
CN 200710156345
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Chinese (zh)
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CN101418774A (en )
Inventor
黄金伦
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黄金伦
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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 relates to a lightening three-blade wind wheel comprising a mainshaft and three blades connected with the mainshaft. The tip of each blade is provided with a three-foot axis seat, a conical tube is connected to the front end of the mainshaft, a pulling line is tensioned between one foot of the three-foot axis seat of each blade tip and a middle part in each blade length from the conical tube tip in a tensioning manner, so that the plane-shaped rotary wind wheel becomes a tridimensional conoid rotary wind wheel to improve the stiffness and intensity. The pulling line tensioned at the middle part of each blade length is connected to one point of axis line middle part of a variable propeller pitch shaft of the blade. The invention has advantages that the application of the pulling characteristic changes the original rotary plane-shaped wind wheel to the tridimensional conoid rotary wind wheel, so as to improve the wind pressure resistance ability and stiffness, obviously thins and lightens the blade thickness and weight, improves the wind wheel rotation speed and reduces the start wind speed, and increases annual operational rate; the three pulling lines may hold down the beating bend and waving bend tremor caused by the acceleration of gravity of the blade and the wind pressure.

Description

减轻重量的三叶风轮 Three-bladed wheel to reduce the weight

技术领域 FIELD

[0001] 本发明属于风电风力机领域,特别针对现有技术单机大兆瓦级的单片叶片重量达数十吨的三叶风轮的改进。 [0001] The present invention pertains to an improved wind field wind machine, especially up to tens of tons for the prior art single-chip large blade weight megawatt three-bladed wheel.

背景技术 Background technique

[0002] 现有技术的单机大兆瓦级的三叶风轮的单片叶片重量达数十吨。 [0002] The single-chip large megawatt blade weight prior art three-bladed wheel of tens of tons. 要是有效地把单片叶片成倍地减轻,不仅节省材料,还可提高转速、增大功率、减低启动风速和提高年运转效率。 If effectively reduce the exponentially monolithic blade, not only save material, but also improve speed, increase power and reduce startup wind speed and improve the efficiency of the operation. 能够显著地减轻风轮质量,同时,连带关系的可减轻机舱(机头)和塔架(塔筒)用材、降低成本。 It can significantly reduce the quality of the rotor, at the same time, reduce joint relationship nacelle (head) and the tower (tower) timber, and reduce costs.

发明内容 SUMMARY

[0003] 本实用新型的目的是提供一种减轻重量的三叶风轮,以解决现有技术存在的重量大、转速低、启动风速高、年运转效率低、承受风压能力低和刚度低的问题。 [0003] The object of the present invention is to provide a three-bladed wheel to reduce the weight in order to solve the problems in the prior art heavy weight, low speed, high start up wind speed, low in operation efficiency, the ability to withstand the low pressure and low stiffness The problem.

[0004] 本实用新型的技术方案是: [0004] The technical solution of the present invention are:

[0005] 本实用新型的优点是:①应用张拉的特点,改变原来旋转平面形的风轮成为立体形旋转圆锥体风轮,使承受风压能力和刚度提高;②有明显的减薄减轻叶片厚度和重量,会提高风轮转速和降低启动风速,增加年运转率;③风轮由于叶片的重力加速度和风压引起的拍向弯曲和挥向弯曲震颤,可望被三根张拉的张拉线牵制住。 [0005] The advantages of the present invention are: ① application of tension characteristics of the original rotation of the rotor changes planar perspective becomes cone-shaped rotating the rotor, so that increased stiffness and ability to withstand pressure; ② significantly reduce thinning blade thickness and weight, and increase rotor speed to reduce the starting wind speed, an increase in the operating rate; Sign ③ Since the rotor blades of the wind pressure and due to gravitational bending and waving of bending tremor, is expected to be three sheets tensioning cable pin down.

附图说明 BRIEF DESCRIPTION

[0006] 图1是本发明的结构示意图。 [0006] FIG. 1 is a structural diagram of the present invention.

[0007] 图2是表示在变桨距叶片的中段拉线52的说明。 [0007] FIG. 2 is an explanatory middle of the wire 52 in blade pitch.

[0008] 图3是表示在变桨距叶片的三个叶片尖端用三根张拉线53联成正三角形平面图。 [0008] FIG. 3 is a diagram showing three blades in pitch with pitch blade tip of the wire 53 three sheets together into an equilateral triangle plan. 具体实施方式 detailed description

[0009] 图1,表示变桨距机舱内的风轮轴(主轴)1的拨盘2,在减震拨柱3 (仅画出它的轴心线)的分布的节圆上,同时加添螺孔和螺杆及垫圈4,用来紧固住新增添的圆锥管5的法兰;圆锥管5穿过整流罩7的尖顶。 [0009] FIG 1, showing the dial pitching pitch rotor shaft (main shaft) 2 of the cabin 1, in the 3 (shown only in its axial center line) of the pitch circle of the distribution of allocated damping column simultaneously Jiatian and the washer and the screw holes 4, for fastening the stay to add new conical tube flange 5; conical tube 5 passes through the apex of the fairing 7. 由于拨盘2上的拨柱3是拨动轮毂6的,所以现在是锥管5与主轴1、拨盘2、轮毂6、叶片8都一起转动。 Since the post dial dial 23 is struck on the hub 6, so now it is the spindle 1 and the tapered tube 5, dial 2, the hub 6, the blades 8 are rotated together.

[0010] 锥管5用钢板条螺旋形卷成再以激光拼焊。 [0010] 5 with cone steel strip wound into a spiral and then to laser welding. 每片叶片尖端由叶梁延伸一小轴并装上轴承和三足轴承座81,现在从81的其中一足张拉一碳纤维复合材料或用高强度钢圆小圆条(例如镀铝锌防腐蚀)51固定在锥管5的尖端。 Ye Liangyan tip of each blade extends a small shaft mounted on the bearing and bearing housing 81 and three legs, wherein a current from the foot 81 of the tensioning carbon fiber composite material or a high-strength steel round bar with a small circle (e.g. galvanized corrosion ) 51 is fixed to the tip of the cone 5. 这样三片叶尖都向锥管5的尖端张拉一条拉线51 ;其次在5的尖端向各叶片的中段也张拉各一条52张线,其张拉的原理说明见图2,用图2的方式张拉不会妨碍变桨距时叶片轴转动。 Such three tube tip are tapered toward a tip 5 of the tensioning cable 51; secondly the tip of each blade 5 also in the middle of each one tension line 52, which is tensioned explaining the principle shown in Figure 2, with FIG. 2 tensioning manner does not interfere with the shaft rotates blade pitching.

[0011] 图2,0点是变桨距转轴轴芯线中、中段的一个点,阴影线部分表示0所在的叶片中段截面,现在该截面上设一金属横担D1-0-D2,我们有办法找一根适当长度细线如图2的DUOU D2中,两个线头分别系住Dl和D2各点,再用针尖作桩柱套在Dl、01、D2的顶角,并适当保持张紧Dl、01和01、D2,同时以针尖划弧线,这划出的弧是以0为圆心的圆周的1/4, 这1/4圆周正是变桨距的变动转角。 [0011] FIG point is 2,0 pitch axis shaft line of the core, a middle point, hatched portions represent 0 where the blade cross section in the middle, is now provided a metal supported on the cross-sectional D1-0-D2, we there are ways to find a suitable length of the thin line in FIG DUOU D2 2, respectively two thread tying points Dl and D2, and then set in the needle as the pile Dl, 01, the apex angle D2, and suitably maintained sheets tight Dl, 01 and 01, D2, while the tip draw an arc, this arc is drawn 0 as the center of the circumference of 1/4, 1/4 the circumference of this change is the change in the corner of the pitch. 假若用一个很小的动滑轮代替刚才的针尖划弧,系住动滑轮的张线即为图1的52 ;现在52 (即动滑轮)不动,而横担Dl-0-D2(即叶片在该处的截面以0为心转动90°即桨叶作变桨距转动时)则张拉线52对0点的距离不变,也就说明可以张拉住0点(02、03、04是01的弧线轨迹),对变桨距转动不妨碍。 If the movable pulley with a small tip to draw an arc instead of just 52 Double tied movable pulley is the line of FIG. 1; Now 52 (i.e. movable pulley) does not move, while the cross arm Dl-0-D2 (i.e., where the blades the cross-section of the heart is rotated to 0 90 ° blade for pitch i.e. when the rotation pitch) of the wire 52 pairs of sheets from the same point 0, it means that the sheets can be pulled 0:00 (02,03,04 arc 01 is line trajectory), the pitch of the rotation is not hindered. 但实际应用中不必很精确,因为叶片有相当大的挠度。 But the practical application need not be very accurate, because there is a large blade deflection.

[0012] 图3是各叶片尖端的三足轴承座81的左右相对两个足都用张拉线53 (共三根) 互相联接张拉成一个正三角形的平面图。 [0012] FIG. 3 is approximately three feet of each blade tip relative to the bearing housing 81 are coupled to each other two plan view of the foot into a regular triangle tensioned cable 53 with sheets (total three).

Claims (2)

  1. 1. 一种减轻重量的三叶风轮,包括主轴和与其连接的三个叶片,其特征是,在每一该叶片的尖端均装有三足轴座,在该主轴的前端接出一根锥管,从该锥管尖端用张拉方式向各个叶片尖端的三足轴座的一个足和各叶片长度上的中间段分别张拉一条拉线,使平面形的旋转风叶轮成为立体圆锥形的旋转风叶轮来提高刚度和强度;该张拉在叶片长度上中间段的拉线连接在该叶片的变桨距转轴轴芯线中段的一个点上。 1. A method of reducing the weight of the three-bladed wheel, comprising a main shaft and three blades connected thereto, characterized in that each of the blade tip are equipped with three-legged pedestal, pick out a cone at the front end of the spindle tubes, respectively, a tension wire to the intermediate section of each blade tip on a three-legged foot axle seat and each blade length from the tip of the cone by using a tensile manner that planar rotational wind impeller rotating conical stereorigid air impeller to increase the rigidity and strength; the tension on the cable length of the blade section is connected to an intermediate point of a rotary shaft from the middle axis of the core wire of the blade pitch.
  2. 2.根据权利要求1所述的减轻重量的三叶风轮,其特征是,各叶片尖端的三足轴座的另外两个足与相邻的叶片尖端的三足轴座的两个足之间分别张拉有张拉线,使三叶片之间的张拉线形成正三角形,抵御叶片由于重力加速度引起的震颤,三足轴座内的轴承使叶梁轴线可进行变桨距转动。 According to claim to reduce the weight of the three-bladed wheel 1, characterized in that the two feet of the foot and the other two adjacent blade tip three-legged pedestal tripod tip of each vane axle seat Zhang respectively between tensioning cable, so that the three sheets of wire between the blades form an equilateral triangle, since the blades against the gravitational acceleration caused by tremor, bearing the three-legged pedestal lobe axis the beam can be rotated pitch.
CN 200710156345 2007-10-22 2007-10-22 Weight reduced three-blade wind wheel CN101418774B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200710156345 CN101418774B (en) 2007-10-22 2007-10-22 Weight reduced three-blade wind wheel

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Application Number Priority Date Filing Date Title
CN 200710156345 CN101418774B (en) 2007-10-22 2007-10-22 Weight reduced three-blade wind wheel

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CN101418774A true CN101418774A (en) 2009-04-29
CN101418774B true CN101418774B (en) 2011-05-25

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102434384A (en) * 2011-11-11 2012-05-02 张向增 Novel composite material blade of horizontal shaft wind generating set
CN103174583B (en) * 2011-12-20 2016-04-06 李泽宇 A wind wheel
CN103470445A (en) * 2013-10-09 2013-12-25 南京风电科技有限公司 Device for increasing rigidity of blades of wind turbine generator

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