CN201152230Y - Cross axis wind motor with blade tip winglet - Google Patents

Cross axis wind motor with blade tip winglet Download PDF

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Publication number
CN201152230Y
CN201152230Y CNU2008200552276U CN200820055227U CN201152230Y CN 201152230 Y CN201152230 Y CN 201152230Y CN U2008200552276 U CNU2008200552276 U CN U2008200552276U CN 200820055227 U CN200820055227 U CN 200820055227U CN 201152230 Y CN201152230 Y CN 201152230Y
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tip
blade
wind turbine
blade tip
length
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汪建文
高志鹰
刘冬冬
李振法
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Inner Mongolia University of Technology
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Inner Mongolia University of Technology
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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
    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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Abstract

本实用新型涉及风力发电设备,特别是一种带有叶尖小翼的水平轴风力机。更具体的讲是涉及一种具有自动失速调节功能,且能够改善风力机风轮气动特性、结构动态特性、叶片表面动载荷分布、叶尖涡脱落频率及降低风轮辐射噪声的水平轴风力机叶尖齿型小翼装置。本实用新型包括叶片(2)、轮毂(3)、机舱(4)、塔座(5),风轮上叶片的叶尖处设置有小翼(1),叶尖小翼(1)呈平板型并近似于三角形,斜边部分(S)呈梳子状;本实用新型的优点是在不对原有风力机结构参数进行改动的前提下,通过在风力机叶尖处简单安装平板形小翼来改善风力机的综合性能。并且本实用新型中的叶尖小翼采用平板型结构,结构简单、工艺流程短、工序少、制作成本低、安装简便。

Figure 200820055227

The utility model relates to wind power generating equipment, in particular to a horizontal axis wind machine with blade tip winglets. More specifically, it relates to a horizontal axis wind turbine with an automatic stall adjustment function, which can improve the aerodynamic characteristics of the wind turbine rotor, structural dynamic characteristics, dynamic load distribution on the blade surface, blade tip vortex shedding frequency, and reduce the radiation noise of the rotor. Tip-toothed winglet device. The utility model comprises a blade (2), a wheel hub (3), a nacelle (4), and a tower base (5). A small wing (1) is arranged at the blade tip of the blade on the wind wheel, and the blade tip small wing (1) is flat. The shape of the utility model is similar to that of a triangle, and the hypotenuse part (S) is in the shape of a comb; the utility model has the advantage of simply installing a flat-shaped winglet at the blade tip of the wind turbine without changing the structural parameters of the original wind turbine. Improve the overall performance of the wind turbine. Moreover, the blade tip winglet in the utility model adopts a flat plate structure, which has a simple structure, a short process flow, fewer procedures, low manufacturing cost and easy installation.

Figure 200820055227

Description

带有叶尖小翼的水平轴风力机 Horizontal axis wind turbine with tip winglets

技术领域 technical field

本实用新型涉及风力发电设备,特别是一种带有叶尖小翼的水平轴风力机。更具体的讲是涉及一种具有自动失速调节功能,且能够改善风力机风轮气动特性、结构动态特性、叶片表面动载荷分布、叶尖涡脱落频率及降低风轮辐射噪声的水平轴风力机叶尖小翼装置。The utility model relates to wind power generating equipment, in particular to a horizontal axis wind machine with blade tip winglets. More specifically, it relates to a horizontal axis wind turbine with an automatic stall adjustment function, which can improve the aerodynamic characteristics of the wind turbine rotor, structural dynamic characteristics, dynamic load distribution on the blade surface, blade tip vortex shedding frequency, and reduce the radiation noise of the rotor. Blade tip winglet device.

背景技术 Background technique

风能作为一种清洁的可再生能源在未来的能源系统中将发挥重要作用。近十多年来,世界风力发电以年增长率30%左右高速发展。在我国,风力机技术研究也获得了较快的进展,先后研制了百千瓦级至兆瓦级的一系列大中型并网型风电机组,其中部分机组已实现商品化。As a clean renewable energy, wind energy will play an important role in the future energy system. Over the past ten years, the world's wind power has developed rapidly with an annual growth rate of about 30%. In my country, the research on wind turbine technology has also made rapid progress. A series of large and medium-sized grid-connected wind turbines ranging from 100 kilowatts to megawatts have been developed, and some of them have been commercialized.

目前已经公开与实用新型相近的专利文献,如JP2004084590、CN1308594C、CN2270125Y、US4362469、US4093402A、US4003676A,在这些文献中小翼大多采用与风轮叶片相同的翼型,改变了风力机的尾迹流场的分布及叶尖的环量分布,减小了诱导阻力,提高风力机的效率,但文献中小翼由于采用的是翼型,所以结构较复杂、工序多、制作成本高、安装困难,At present, patent documents similar to utility models have been published, such as JP2004084590, CN1308594C, CN2270125Y, US4362469, US4093402A, US4003676A. In these documents, most of the winglets adopt the same airfoil as the wind rotor blade, which changes the distribution of the wake flow field of the wind turbine and the circulation distribution of the blade tip, which reduces the induced resistance and improves the efficiency of the wind turbine. However, because the winglet in the literature is an airfoil, the structure is more complicated, the process is more, the production cost is high, and the installation is difficult.

发明内容 Contents of the invention

本实用新型的目的在于针对现有风轮叶尖小翼的结构复杂、加工难度大,制作成本高、安装困难等技术不足,提供了一种带有叶尖齿型小翼的水平轴风力机,该齿型小翼能改善该实用新型中风力机风轮的失速特性、气动特性、结构动态特性、叶片表面动载荷分布及降低风轮辐射噪声的,使风力机节约能源,提高效率。The purpose of the utility model is to provide a horizontal-axis wind turbine with a blade-tip toothlet in view of the technical deficiencies such as complex structure, difficult processing, high manufacturing cost, and difficult installation of the existing wind rotor blade tip. The tooth-shaped winglet can improve the stall characteristics, aerodynamic characteristics, structural dynamic characteristics, blade surface dynamic load distribution and reduce the radiation noise of the wind turbine in the utility model, so that the wind turbine can save energy and improve efficiency.

本实用新型目的实现由以下技术方案完成:The utility model goal is realized by the following technical solutions:

本实用新型包括叶片2、轮毂3、机舱4、塔座5,风轮上叶片的叶尖处设置有小翼1,叶尖小翼1呈平板型并近似于三角形,斜边部分S呈梳子状;近似于三角形的叶尖小翼的斜边部分呈梳子状,其每个梳齿的纵向截面呈三角形;小翼曲线斜边S上的梳齿的齿顶角φ=15°-90°,齿的高度H为前缘直边L长度的0.1-0.3倍,齿尖圆弧半径R为齿的高度H的0.06-0.2倍;所述的叶尖小翼1的安装面M与叶尖翼型断面重合,前缘直边L安装点位于叶尖翼型前缘点a处,后缘直边h沿翼弦c方向安装于后缘点b附近;安装面折边B长度为叶尖翼型弦长c的0.7-0.9倍,前缘直边L长度为安装面折边B长度的0.9-1.2倍,连接边E长度为前缘直边L为0.1-0.25倍,后张角β=35°-55°,后缘直边h长度为连接边E长度的0.9-1.2倍;所述的叶尖齿型小翼1的材料为平板型木材或玻璃钢或强化铝板。The utility model includes a blade 2, a hub 3, a nacelle 4, and a tower base 5. A small wing 1 is arranged at the blade tip of the blade on the wind wheel. shape; the hypotenuse part of the leaflet tip, which is similar to a triangle, is comb-shaped, and the longitudinal section of each comb tooth is triangular; the tooth tip angle φ=15°-90° of the comb tooth on the hypotenuse S of the winglet curve , the height H of the tooth is 0.1-0.3 times the length of the straight edge L of the leading edge, and the arc radius R of the tooth tip is 0.06-0.2 times the height H of the tooth; the mounting surface M of the blade tip winglet 1 and the blade tip The section of the airfoil is coincident, the installation point of the leading edge straight edge L is located at the leading edge point a of the blade tip airfoil, and the trailing edge straight edge h is installed near the trailing edge point b along the direction of the chord c; the length of the flange B of the installation surface is the blade tip The chord length of the airfoil is 0.7-0.9 times, the length of the straight edge L of the leading edge is 0.9-1.2 times the length of the folding edge B of the mounting surface, the length of the connecting side E is 0.1-0.25 times the length of the straight edge L of the leading edge, and the back tension angle β =35°-55°, the length of the straight side h of the trailing edge is 0.9-1.2 times the length of the connecting side E; the material of the tip-toothed winglet 1 is flat wood or glass fiber reinforced plastic or reinforced aluminum plate.

本实用新型的优点是在不对原有风力机结构参数进行改动的前提下,通过在风力机叶尖处简单安装平板形齿型小翼来改善风力机的综合性能。本实用新型中的叶尖齿型小翼由于气动力的作用及特殊齿形下,在满足以上功能基础上还使该实用新型的风力机具有自动失速调节功能、改善了风力机的结构动态特性,改变风轮工作时的动频曲线走向,使其有脱离转速共振区的趋势、改善了叶片表面动载荷分布和叶尖脱落频率、降低了风轮辐射噪声。并且本实用新型中的叶尖齿型小翼采用平板型结构,结构简单、工艺流程短、工序少、制作成本低、安装简便。The utility model has the advantage of improving the comprehensive performance of the wind power machine by simply installing flat-shaped toothed winglets at the tip of the wind power machine without changing the structural parameters of the original wind power machine. Due to the action of the aerodynamic force and the special tooth profile, the tip-toothed winglets in the utility model enable the wind turbine of the utility model to have an automatic stall adjustment function on the basis of satisfying the above functions, and improve the structural dynamic characteristics of the wind turbine. , change the dynamic frequency curve trend of the wind rotor when it is working, so that it has a tendency to leave the speed resonance area, improve the dynamic load distribution on the blade surface and the blade tip shedding frequency, and reduce the radiation noise of the wind rotor. In addition, the tip-toothed winglet of the utility model adopts a flat plate structure, which has the advantages of simple structure, short technological process, few working procedures, low manufacturing cost and easy installation.

附图说明 Description of drawings

图1为本实用新型的水平轴风力机整体结构示意图Figure 1 is a schematic diagram of the overall structure of the horizontal axis wind turbine of the present invention

图2为本实用新型齿型小翼的结构示意图Fig. 2 is a structural schematic diagram of the utility model toothed winglet

图3为本实用新型叶尖齿型小翼的安装部位示意图Fig. 3 is a schematic diagram of the installation position of the blade-toothed winglet of the utility model

图4为本实用新型叶尖齿型小翼安装A-A剖面示意图Fig. 4 is the schematic diagram of A-A sectional view of the installation of the blade tip toothed winglet of the utility model

具体实施方式 Detailed ways

以下结合附图和实施例对本实用新型的技术方案作进一步描述Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is further described

附图1~4中的标号分别表示:1-齿型小翼、2-风力机叶片、3-轮毂、4-机舱、5-塔架、6-叶片吸力面、7-叶片压力面、I-来流方向、II-风力机旋转方向、B-安装面折边、L-前缘直边、h-后缘直边、E-连接边、H-齿高、φ-齿形斜边的顶角、S-齿型斜边、R-齿尖圆弧半径、M-安装面、I-为来流方向、B-安装面折边、L-前缘直边h-后缘直边、E-连接边、H-齿的高度、φ-齿顶角、a-翼型前缘点、b-翼型后缘点、c-叶尖翼型弦线、β-后张角。The labels in accompanying drawings 1 to 4 represent respectively: 1-toothed winglet, 2-wind turbine blade, 3-hub, 4-nacelle, 5-tower, 6-blade suction surface, 7-blade pressure surface, I -Incoming flow direction, II-rotation direction of wind turbine, B-folding of installation surface, L-straight edge of front edge, h-straight edge of rear edge, E-connecting edge, H-tooth height, φ-tooth bevel Vertex angle, S-tooth hypotenuse, R-tooth tip arc radius, M-installation surface, I-incoming flow direction, B-installation surface folded edge, L-front edge straight edge h-rear edge straight edge, E-connecting edge, H-tooth height, φ-addendum angle, a-airfoil leading edge point, b-airfoil trailing edge point, c-blade tip airfoil chord line, β-back tension angle.

本实用新型的整体结构如图1所示,主要由叶片2、轮毂3、机舱4、塔座5组成。其中机舱4中有齿轮传动装置、发电机、调整装置及其电气调向机构、电气控制设备、液压泵等。Overall structure of the utility model as shown in Figure 1, is mainly made up of blade 2, wheel hub 3, engine room 4, tower seat 5. Wherein the engine room 4 has a gear transmission, a generator, an adjustment device and its electrical steering mechanism, an electrical control device, a hydraulic pump, and the like.

本实用新型设计的小翼1安装在叶片2的叶尖部分,安装连接如图3所示。小翼结构如图2所示,材料可选用平板型木材或玻璃钢或强化铝板轻质材料制作。The winglet 1 designed by the utility model is installed on the blade tip part of the blade 2, and the installation connection is as shown in Figure 3 . The structure of the winglet is shown in Figure 2, and the material can be made of flat wood or fiberglass or reinforced aluminum plate light material.

本实用新型实施例包括叶片2、轮毂3、机舱4、塔座5,风轮上叶片的叶尖处设置有小翼1,叶尖小翼(1)呈平板型并近似于三角形,斜边部分S呈梳子状;近似于三角形的叶尖齿型小翼的斜边部分呈梳子状,其每个梳齿的纵向截面呈三角形;小翼曲线斜边S上的梳齿的齿顶角φ=45°,齿的高度H为前缘直边L长度的0.1倍,齿尖圆弧半径R为齿的高度H的0.15倍;所述的叶尖小翼1的安装面M与叶尖翼型断面重合,前缘直边L安装点位于叶尖翼型前缘点a处,后缘直边h沿翼弦c方向安装于后缘点b附近;安装面折边B长度为叶尖翼型弦长c的0.9倍,前缘直边L长度为安装面折边B长度的1倍,连接边E长度为前缘直边L为0.2倍,后张角β=45°,后缘直边h长度为连接边E长度的1倍;所述的叶尖齿型小翼(1)的材料为平板型木材或玻璃钢或强化铝板。安装点位于叶尖翼型前缘点a处,后缘直边(h)沿翼弦d方向安装于后缘点b附近。The utility model embodiment comprises blade 2, wheel hub 3, nacelle 4, tower seat 5, and the tip of the blade on the wind wheel is provided with winglet 1, and tip winglet (1) is flat plate and approximates triangle, hypotenuse The part S is in the shape of a comb; the hypotenuse part of the tip-toothed winglet, which is approximately triangular, is in the shape of a comb, and the longitudinal section of each comb tooth is triangular; = 45°, the height H of the tooth is 0.1 times of the length of the straight edge L of the leading edge, and the arc radius R of the tooth tip is 0.15 times of the height H of the tooth; The cross-section coincides, the installation point of the straight edge L of the leading edge is located at the leading edge point a of the tip airfoil, the straight edge h of the trailing edge is installed near the trailing edge point b along the direction of the chord c; the length of the flange B of the mounting surface is the tip of the wing The chord length c is 0.9 times, the length of the straight edge L of the front edge is 1 times the length of the flange B of the mounting surface, the length of the connecting edge E is 0.2 times that of the straight edge L of the front edge, the back tension angle β=45°, and the rear edge is straight The length of the side h is 1 time of the length of the connecting side E; the material of the tip-toothed winglet (1) is flat wood or glass fiber reinforced plastic or strengthened aluminum plate. The installation point is located at the leading edge point a of the blade tip airfoil, and the straight edge (h) of the trailing edge is installed near the trailing edge point b along the direction of the chord d.

虽然以上已经参照附图按照本实用新型及实用新型目的的构思和实施作了详尽说明,但本领域普遍技术人员可以认识到,在没有脱离权利要求限定范围的前提条件下,仍然可以对本实用新型做出各种改进和变换,而这种改进和变换仍然应用属于本实用新型的保护范围。Although the above has been described in detail according to the conception and implementation of the utility model and utility model purpose with reference to the accompanying drawings, those skilled in the art can recognize that the utility model can still be modified without departing from the scope of the claims. Various improvements and changes are made, and such improvements and changes still apply and belong to the protection scope of the present utility model.

Claims (5)

1, a kind of horizontal-shaft wind turbine that has tip vane, comprise blade (2), wheel hub (3), cabin (4), tower seat (5), the blade tip place of wind wheel upper blade is provided with winglet (1), it is characterized in that, tip vane (1) is plate and is similar to triangle, and hypotenuse part (S) is comb shape.
2, a kind of horizontal-shaft wind turbine that has tip vane according to claim 1 is characterized in that, the hypotenuse that is similar to leg-of-mutton tip vane partly is comb shape, and the longitudinal cross-section of its each broach is triangular in shape.
3, a kind of horizontal-shaft wind turbine that has tip vane according to claim 1 and 2, it is characterized in that, addendum angle φ=15 of the broach on the winglet curve hypotenuse (S) °-90 °, the height of tooth (H) be leading edge straight flange (L) length 0.1-0.3 doubly, tip circular-arc radius (R) be 0.06-0.2 times of height (H) of tooth.
4, a kind of horizontal-shaft wind turbine that has tip vane according to claim 1, it is characterized in that, the attachment face (M) of described tip vane (1) overlaps with blade tip aerofoil profile section, leading edge straight flange (L) mounting points is positioned at blade tip aerofoil profile leading edge point (a) to be located, and trailing edge straight flange (h) is installed near the trailing edge point (b) along wing chord (c) direction; Attachment face flanging (B) length is 0.7-0.9 times of blade tip aerofoil profile chord length (c), leading edge straight flange (L) length is 0.9-1.2 times of attachment face flanging (B) length, fillet (E) length is that leading edge straight flange (L) is 0.1-0.25 times, back subtended angle β=35 °-55 °, trailing edge straight flange (h) length is 0.9-1.2 times of fillet (E) length.
5, a kind of horizontal-shaft wind turbine that has tip vane according to claim 1 is characterized in that, the material of described blade tip flute profile winglet (1) is plate timber or glass fibre reinforced plastics or strengthens aluminium sheet.
CNU2008200552276U 2008-01-30 2008-01-30 Cross axis wind motor with blade tip winglet Expired - Fee Related CN201152230Y (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835874A (en) * 2012-11-21 2014-06-04 西门子公司 Wind turbine blade with a blade attachmen
CN104948396A (en) * 2015-07-22 2015-09-30 代元军 Wind turbine blade adopting serrated blade tip tail edge structure and wind turbine
CN104963807A (en) * 2015-07-16 2015-10-07 青岛安华新元风能股份有限公司 Wind driven generator blade

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835874A (en) * 2012-11-21 2014-06-04 西门子公司 Wind turbine blade with a blade attachmen
CN103835874B (en) * 2012-11-21 2018-08-24 西门子公司 Wind turbine blade with blade attachment
CN104963807A (en) * 2015-07-16 2015-10-07 青岛安华新元风能股份有限公司 Wind driven generator blade
CN104963807B (en) * 2015-07-16 2017-08-22 青岛安华新元风能股份有限公司 Blade of wind-driven generator
CN104948396A (en) * 2015-07-22 2015-09-30 代元军 Wind turbine blade adopting serrated blade tip tail edge structure and wind turbine
CN104948396B (en) * 2015-07-22 2017-12-05 新疆工程学院 Blade tip trailing edge is serrated the pneumatic equipment bladess and wind energy conversion system of structure

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