WO2010102473A1 - 一种用于风力发电机的涡流风轮 - Google Patents

一种用于风力发电机的涡流风轮 Download PDF

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Publication number
WO2010102473A1
WO2010102473A1 PCT/CN2009/072914 CN2009072914W WO2010102473A1 WO 2010102473 A1 WO2010102473 A1 WO 2010102473A1 CN 2009072914 W CN2009072914 W CN 2009072914W WO 2010102473 A1 WO2010102473 A1 WO 2010102473A1
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Prior art keywords
blade
wind
vortex
sleeve
power generator
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PCT/CN2009/072914
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English (en)
French (fr)
Inventor
许纯权
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东莞市金鑫智能机械设备有限公司
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Publication of WO2010102473A1 publication Critical patent/WO2010102473A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention relates to the technical field of wind turbine components, and in particular to a vortex wind wheel for a wind power generator. Background technique
  • the wind wheel is an important component of the wind power generator, which is used to convert the wind energy into the rotational energy of the machine.
  • the wind blade of the wind wheel is rotated by the air flow on the windward side, thereby driving the wind wheel to drive the rotor of the generator to rotate and realize power generation. .
  • the existing wind wheel is roughly divided into a blade impeller and a curved impeller according to the shape of its blade;
  • the blade of the paddle impeller is in the form of a slurry, and the structure thereof is generally mounted on the sleeve with 3 to 6 blades, and the paddle impeller wind resistance Small, easy to be driven by the wind, but its wind blade is less affected by the wind surface, and the utilization of wind energy is not high. Therefore, in order to obtain high power, the diameter of the blade will be continuously increased, which will increase the cost and difficulty in installation and maintenance.
  • the wind turbine investment value is affected; and the curved impeller is generally curved in a curved surface.
  • Wind turbines can capture wind energy more than the blades of the impeller, but the defects are: Because the blades are symmetrically arranged around the shaft, some of the blades are in the windward and quasi-windward state, while the other blades are in the upwind and semi-wind directions. This will offset some of the forward thrust torque and reduce the effective power generation efficiency of the wind turbine.
  • the airflow includes horizontal airflow and updraft airflow. Most of the current wind turbine impellers can only use airflow in one direction. Summary of the invention The object of the present invention is to provide a vortex wind turbine for a wind power generator, which can utilize both a horizontal air flow and an upward air flow to rotate, which has high utilization rate of wind energy, and is reversed. The wind resistance is small and the driving force is strong.
  • the present invention adopts the following technical solutions:
  • a vortex wind wheel for a wind power generator comprising a bush sleeve, the outer edge of the bush sleeve is uniformly fixed with a plurality of blades; the wind blade is gradually warped from the top of the blade to the root of the blade; the fan blade From the root to the tip of the leaf gradually shrinks and forms a sharp corner at the tip of the leaf; the wind blade is divided into a front part and a rear part by a line connecting the midpoint of the leaf tip to the midpoint of the leaf root, and the rear projected area is larger than the front part shadow area.
  • a gap is formed between the blade root of each blade and the sleeve.
  • the U-shaped cross section of the blade root has an opening width not greater than a length of the sleeve.
  • the ratio of the length of the boundary to the opening width of the U-shaped section of the blade root is not less than 2.
  • the ratio of the height of the section of the U-shaped section of the blade root to the width of the opening is not less than 1. Further, the outer edge of the sleeve is uniformly fixed with 8 blades.
  • One side of the concave surface of the blade is a windward side.
  • a baffle is disposed at both ends of the sleeve.
  • the inner wall of the sleeve is provided with a pin groove.
  • a vortex wind wheel for a wind power generator comprising a bush sleeve, wherein the outer edge of the bush sleeve is uniformly fixed with a plurality of blades; the wind blade gradually warps from the top of the blade to the blade root U-shaped; the leaves gradually contract from the root to the tip of the leaf and form a sharp corner at the tip of the blade; the blade is divided into a front and a back by a line connecting the midpoint of the leaf tip to the midpoint of the blade root, the rear part
  • the projected area is larger than the projected area of the front portion; when the airflow is blown toward the wind wheel from a direction perpendicular to the axis of the sleeve, the concave side of the wind blade is subjected to wind, and an air vortex is formed in the U-shaped curved surface to push the impeller Rotating; when the airflow is blown from the direction parallel to the axis of the sleeve to the wind wheel,
  • Figure 1 is a front elevational view of the present invention
  • Figure 2 is a left side view of the present invention
  • Figure 3 is a front elevational view of the blade of the present invention.
  • Figure 4 is a cross-sectional view taken along the line A-A of Figure 3; detailed description
  • FIG. 1 and FIG. 3 are preferred embodiments of the present invention, a vortex wind turbine for a wind power generator, which includes a bushing 2
  • the outer edge of the sleeve 2 is uniformly fixed with a plurality of blades 1; the blade 1 gradually warps from the tip 11 to the blade root 12 in a U shape; the blade 1 gradually contracts from the blade root 12 to the tip 11 A sharp corner is formed at the tip 1 1; the wind blade 1 is divided into a front portion 14 and a rear portion 1 3 by a line connecting the tip 11 to the midpoint of the leaf 12, and the rear portion 1 3 has a larger projected area than the front portion.
  • the projected area of 14 is shown in FIG. 1 and FIG. 3, which are preferred embodiments of the present invention, a vortex wind turbine for a wind power generator, which includes a bushing 2
  • the outer edge of the sleeve 2 is uniformly fixed with a plurality of blades 1; the blade 1 gradually warps from the tip 11 to the blade root 12 in
  • the invention is coaxially fixed to the rotating shaft of the generator by the sleeve 2, and when used, when the airflow is blown to the wind wheel from the direction perpendicular to the axis of the sleeve 2, the concave side of the blade 1 is subjected to the wind, An air vortex is formed in the U-shaped arc surface to push the impeller to rotate; when the air flow is blown from the direction parallel to the axis of the sleeve 2 toward the wind wheel, since the projected area of the rear portion 13 is larger than the projected area of the front portion 14 The airflow is blocked by the rear portion 13 of the vane 1, and an air vortex is formed in the U-shaped arc surface to push the impeller to rotate; Therefore, the present invention can utilize both the horizontal airflow and the upward airflow to rotate; it is suitable for vertical installation, and is also suitable for horizontal installation, and has a wide application range.
  • a gap 15 is formed between the blade root 12 of the blade 1 and the sleeve 2, and the gap 15 is an air flow passage.
  • the gap 15 is formed at each of the roots 12, and the gaps 15 of all the blades 1 form an annular air passage around the sleeve 2, and the airflow flows in the annular air passage to form a vortex around the sleeve 2, which makes The impeller rotates more vigorously and the output torque is greater.
  • the U-shaped cross section of the blade 1 of the blade 1 has an opening width not greater than the length of the sleeve 2; that is, the blade root 12 of the blade 1 is along the sleeve. 2
  • the axial direction is fixed on the outer wall of the sleeve 2, and does not exceed the ends of the sleeve 2.
  • the ratio of the length of the boundary to the opening width of the 12U section of the blade root is not less than 2; the ratio of the height of the section of the 12U section of the blade 1 to the width of the opening is not less than 1; Obtain a suitable wind receiving area and reduce the reverse wind resistance.
  • the outer edge of the sleeve 2 of the embodiment is uniformly fixed with 8 blades 1 .
  • the concave side of the blade 1 of the present invention is a windward side.
  • the wind is blown toward the side to push the impeller to rotate; at the same time, in order to ensure that the impeller is parallel to the axial direction of the sleeve 2, In operation, it is also necessary to bring the front portion 14 of the blade 1 to the wind.
  • a baffle 21 is disposed at the two ends, and the baffle 21 is used to prevent the blade 1 from sliding along the axial direction of the sleeve 2, so that the wind wheel rotates more. smooth.
  • the inner wall of the sleeve 2 of the embodiment is provided with a pin groove 22 which is matched with the pin groove 22 on the generator shaft for mounting the pin to make the impeller and the shaft Secured.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Description

一种用于风力发电机的涡流风轮
技术领域
本发明涉及风力发电机部件技术领域， 特别涉及一种用于风力发电机的 涡流风轮。 背景技术
风轮是风力发电机的重要组成部件， 用于将风能转换成机械的转动能， 使用时， 风轮的风叶迎风一面受气流推动而转动， 从而驱使风轮带动发电机 转子转动， 实现发电。
现有的风轮， 按其风叶形状大致分为桨叶轮和曲面叶轮； 桨叶轮的风叶 呈浆形， 其结构一般是在轴套上均勾安装 3至 6片桨叶， 桨叶轮风阻小， 容 易受风推动旋转， 但其风叶受风面小， 对风能的利用率不高， 所以为获得大 功率， 就将不断增加风叶直径， 这样会增大成本和安装维护难度， 从而影响 风电投资价值； 而曲面叶轮其风叶一般弯曲呈弧面， 这种叶轮在安装时其轴 心方向一般垂直于气流方向， 即垂直安装， 这种风轮的风叶受风面大， 相比 桨叶轮的风叶更能捕获风能， 但其缺陷在于： 由于风叶对称布置于转轴的周 围， 使用时部分风叶处于迎风、 准迎风状态， 同时， 另一部分风叶处于逆风 以及半逆风状态， 这样将会抵消部分正向推力力矩， 降低风力发电机有效的 发电效率。
气流包括水平气流和上升气流， 目前的风力发电机的叶轮大多只能利用 一种方向的气流。 发明内容 本发明的目的在于针对现有技术的不足而提供一种用于风力发电机的涡 流风轮， 该风轮既能利用水平气流， 也能利用上升气流而转动， 对风能的利 用率高， 逆向风阻小， 推动力强。
为实现上述目的， 本发明采用如下技术方案：
一种用于风力发电机的涡流风轮， 它包括一轴套， 轴套外缘均匀固接有 多片风叶； 所述风叶自叶顶至叶根逐渐翘曲呈 U形； 风叶自叶根至叶顶逐渐 收缩并在叶顶处形成尖角； 风叶以叶顶至叶根中点的连线为界线分为前部和 后部， 所述后部投影面积大于前部的投影面积。
其中， 每片所述风叶的叶根与轴套间设置有空隙。
所述风叶叶根的 U形截面， 其开口宽度不大于轴套的长度。
所述界线的长度与叶根 U形截面开口宽度的比值不小于 2。
所述风叶叶根 U形截面的截面高度与所述开口宽度的比值不小于 1。 更进一步地， 所述轴套外缘均匀固接有 8片风叶。
所述风叶下凹的一侧面为迎风面。
所述轴套两端设置有挡板。
所述轴套内壁开设有销槽。
本发明有益效果为： 一种用于风力发电机的涡流风轮， 它包括一轴套， 轴套外缘均匀固接有多片风叶； 所述风叶自叶顶至叶根逐渐翘曲呈 U形； 风 叶自叶根至叶顶逐渐收缩并在叶顶处形成尖角； 风叶以叶顶至叶根中点的连 线为界线分为前部和后部， 所述后部投影面积大于前部的投影面积； 当气流 从垂直于轴套轴心的方向吹向风轮时， 风叶下凹的一面受风， 在所述 U形弧 面内形成空气涡流， 从而推动叶轮转动； 当气流从平行与轴套轴心的方向吹 向风轮时， 由于所述后部的投影面积大于前部的投影面积， 气流被风叶后部 阻挡， 而在所述 u形弧面内形成空气涡流， 从而推动叶轮转动； 故而本发明 既能利用水平气流， 也能利用上升气流而转动； 且叶轮转动时， 气流在风叶 下凹面形成涡流， 对叶轮的推动力强； 叶轮转动时， 所述 U形凸起面逆风， 该凸起面呈流线形， 逆风风阻小， 产生的阻力力矩小。 附图说明
附图 1是本发明的正视图；
附图 2是本发明的左视图；
附图 3是本发明风叶的正视图；
附图 4是附图 3的 A— A向截面示意图。 具体实施方式
下面结合附图对本发明作进一步的说明， 见附图 1和附图 3所示， 这是 本发明的较佳实施方式， 一种用于风力发电机的涡流风轮， 它包括一轴套 2 , 轴套 2外缘均匀固接有多片风叶 1 ; 所述风叶 1 自叶顶 11至叶根 12逐渐翘 曲呈 U形；风叶 1 自叶根 12至叶顶 11逐渐收缩并在叶顶 1 1处形成尖角；风 叶 1以叶顶 11至叶才 12中点的连线为界线分为前部 14和后部 1 3 , 所述后 部 1 3投影面积大于前部 14的投影面积。
本发明通过轴套 2与发电机的转轴同轴固接， 在使用时， 当气流从垂直 于轴套 2轴心的方向吹向风轮时， 风叶 1下凹的一面受风， 在所述 U形弧面 内形成空气涡流， 从而推动叶轮转动； 当气流从平行与轴套 2轴心的方向吹 向风轮时， 由于所述后部 1 3的投影面积大于前部 14的投影面积， 气流被风 叶 1后部 1 3阻挡， 而在所述 U形弧面内形成空气涡流， 从而推动叶轮转动； 故而本发明既能利用水平气流，也能利用上升气流而转动；适用于垂直安装， 也适用与水平安装， 适用范围广。
见附图 2所示，本实施例每片所述风叶 1的叶根 12与轴套 2间设置有空 隙 15 , 该空隙 15为气流通道， 当气流吹至风叶 1下凹的 U形弧面内， 将沿 该弧面流向叶根 12处， 并从所述空隙 15内流出， 吹向下一个风叶 1 , 这样 进一步提高了对风能的利用率； 同时， 由于所以风叶 1叶根 12处均开设了所 述空隙 15 , 则所有风叶 1的空隙 15组成一环绕轴套 2的环形空气通道， 气 流在该环形空气通道内流动， 形成一环绕轴套 2的涡流， 这使叶轮的转动更 有力， 输出的扭矩更大。
见附图 4所示，所述风叶 1叶根 12的 U形截面，其开口宽度不大于轴套 2的长度； 亦即是说， 所述风叶 1的叶根 12两端沿轴套 2轴心方向固定在轴 套 2外壁上， 并不超出轴套 2两端。
所述界线的长度与叶根 12U形截面开口宽度的比值不小于 2 ;所述风叶 1 叶根 12U形截面的截面高度与所述开口宽度的比值不小于 1 ; 这是为了使风 叶 1获得合适的受风面积， 减小逆向风阻。
见附图 1所示， 本实施例所述轴套 2外缘均匀固接有 8片风叶 1。
本发明所述风叶 1下凹的一侧面为迎风面， 在使用中， 风吹向该侧面， 才能推动叶轮转动； 同时， 为了保证叶轮在平行于轴套 2轴心方向的气流下 也能工作， 也需使风叶 1的所述前部 14迎风。
见附图 2所示， 本实施例所述轴套 2两端设置有挡板 21 , 所述挡板 21 用于防止风叶 1沿轴套 2轴心方向滑动， 使本风轮转动更为平稳。
见附图 1所示 ， 本实施例所述轴套 2内壁开设有销槽 22 , 该销槽 22与 发电机转轴上的销槽 22匹配， 用于安装销轴， 以使叶轮与所述转轴固接。 以上所述仅是本发明的较佳实施方式， 故凡依本发明专利申请范围所述 的构造、 特征及原理所做的等效变化或修饰， 均包括于本发明专利申请范围 内。

Claims

权 利 要 求
1、 一种用于风力发电机的涡流风轮， 它包括一轴套（2), 轴套（2)外 缘均匀固接有多片风叶（ 1 ); 其特征在于： 所述风叶（ 1 ) 自叶顶（ 11 )至叶 根（ U )逐渐翘曲呈 U形； 风叶（ 1 ) 自叶根 ( U )至叶顶 （ 11 )逐渐收缩并 在叶顶 （11 )处形成尖角； 风叶（1 )以叶顶 （11 )至叶根（U) 中点的连线 为界线分为前部（ I4 )和后部（ 13 ), 所述后部（ 13 )投影面积大于前部（ I4 ) 的投影面积。
2、根据权利要求 1所述的一种用于风力发电机的涡流风轮，其特征在于： 每片所述风叶 （ 1 ) 的叶根（ U )与轴套（ 2 ) 间设置有空隙 （ 15 )。
3、根据权利要求 2所述的一种用于风力发电机的涡流风轮，其特征在于： 所述风叶（ 1 )叶根（Π)的 U形截面， 其开口宽度不大于轴套（2)的长度。
4、根据权利要求 3所述的一种用于风力发电机的涡流风轮，其特征在于： 所述界线的长度与叶根（12 ) U形截面开口宽度的比值不小于 2。
5、根据权利要求 4所述的一种用于风力发电机的涡流风轮，其特征在于： 所述风叶（1 )叶根（12 ) U形截面的截面高度与所述开口宽度的比值不小于 1。
6、根据权利要求 5所述的一种用于风力发电机的涡流风轮，其特征在于： 所述轴套（ 2 )外缘均匀固接有 8片风叶 （ 1 )。
7、根据权利要求 6所述的一种用于风力发电机的涡流风轮，其特征在于： 所述风叶 （1 ) 下凹的一侧面为迎风面。
8、根据权利要求 1 ~ 7任意一项所述的一种用于风力发电机的涡流风轮， 其特征在于： 所述轴套（ 1 ) 两端设置有挡板（ 21 )。
9、根据权利要求 8所述的一种用于风力发电机的涡流风轮，其特征在于: 所述轴套 ( 2 ) 内壁开设有销槽 ( 22 )。
PCT/CN2009/072914 2009-03-13 2009-07-24 一种用于风力发电机的涡流风轮 WO2010102473A1 (zh)

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CN105736391B (zh) * 2016-02-18 2018-11-02 广州道动新能源有限公司 一种风能驱动的灌溉***
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