CN1110368A - 风力涡轮 - Google Patents

风力涡轮 Download PDF

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Publication number
CN1110368A
CN1110368A CN94118644A CN94118644A CN1110368A CN 1110368 A CN1110368 A CN 1110368A CN 94118644 A CN94118644 A CN 94118644A CN 94118644 A CN94118644 A CN 94118644A CN 1110368 A CN1110368 A CN 1110368A
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CN
China
Prior art keywords
wind turbine
blade
turbine according
sawtooth
trailing edge
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Pending
Application number
CN94118644A
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English (en)
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奥多尼斯·G·M·达森
弗兰克林·翰格
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STORK PRODUCT ENGINEERING BV
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STORK PRODUCT ENGINEERING BV
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Application filed by STORK PRODUCT ENGINEERING BV filed Critical STORK PRODUCT ENGINEERING BV
Publication of CN1110368A publication Critical patent/CN1110368A/zh
Pending legal-status Critical Current

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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
    • 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
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/18—Geometry two-dimensional patterned
    • F05B2250/183—Geometry two-dimensional patterned zigzag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • 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

Abstract

为减小风力涡轮转子的转子叶片转动时所产生 的噪音，将每一叶片后缘做成不规则形状。特别是做 成锯齿形状，其顶角小于150°，最好为10°，这样 能大幅度减小噪音。

Description

本发明涉及一种转子上带有一组叶片的风力涡轮，每一叶片有一前缘和后缘。
使用风力涡轮的缺点是，在运转过程中，转子、特别是转子叶片产生噪音。
本发明的目的是减小所产生的这种噪音。其目的依赖在每一叶片后缘设置不规则形状来实现。确切地说，每一叶片的后缘做成锯齿状，至少在一部分后缘上具有这种形状。该锯齿形可作成对称或不对称形式。锯齿的顶角最好小于约150°，最佳值为10°。
试验证明，利用以这种方式做成的叶片可大大降低噪音。
下面将结合附图对本发明作进一步阐明。
图1是本发明风力涡轮的示意图。
图2是本发明具有锯齿边缘的叶片视图。
图3是一个替换实施例的示意图。
图4是一个加工有锯齿的实施例的示意图。
图5是图4的替换实施例的示意图;
图6是另一实施例示意图。
通常，风力涡轮，如发电用的风力涡轮车，包括桅杆1，转子2和一组叶片，在本实施例中有三个叶片3，4和5。从转动方向看，本发明每一叶片的后缘，如叶片3的后缘6做成不规则的。这种不规则可以是不同形状，比如波形和锯齿形。实验表明，锯齿形状无论对称与否，每一锯齿的顶角α大约小于150°，而最好是10°时能最大限度地减小噪音。
当叶片的横截面制成弯曲面时，如图2所示的实施例的锯齿假想平面位于当作吸入边的弯曲面的线上时，能取得最大限度地减小噪音的效果，为实现此目的，用适当的方式在叶片的后缘上设置一锯齿带7。
还可是图3所示的实施例，其中在后钝边缘轻微加工一槽8，锯齿带9固定在凹槽部分，这样使锯齿带与叶片上、下表面轮廓光涡连接。
还可以在叶片上加工齿（图4），或者用图5所示的，将叶片做成管壳状，把锯齿型元件10插入叶片后缘，从而使作为压力边的最小横截面弯曲边也可以平涡地与元件10连接。图6的情况是在绕制叶片的后钝缘上，也可以安装上锯齿状元件11。
根据图4加工齿时会减小弦长。尽管如此，为得到所需的弦长度，理想的是，在所需弦长的80-95%处开始加工锯齿，并在可需弦长的105-120%时结束，其余量则依赖于所选加工面之厚度，用这种方式得到的平均弦长即为所需弦长。

Claims (11)

1、一种风力涡轮，具有一转子，该转子带有一组叶片，每一叶片有一前缘和一后缘，其特征是，后缘为不规则形状。
2、根据权利要求1所述的风力涡轮，其特征是至少在一部分后缘上带有锯齿形状。
3、根据权利要求2所述的风力涡轮，其特征是，叶片在横截面中具有用作吸入边的弯曲部分和与之相比较扁平的另一部分，锯齿平面与通过弯曲部分的假想平面大致处于同一线上。
4、根据权利要求3所述的风力涡轮，其特征在于作成单独元件的锯齿部分固定在叶片上。
5、根据权利要求3所述的风力涡轮，其特征是，锯齿加工在叶片上。
6、根据权利要求5所述的风力涡轮，其特征在于，在叶片上设置特定的弦长时，在该弦长的80-95%处开始加工齿，并在该弦长的105-120%处结束。
7、根据权利要求6所述的风力涡轮，其特征在于，所选择的齿加工点位置部分受叶片厚度的影响。
8、根据权利要求1-7所述的风力涡轮，其特征是，齿的边缘厚度小于4mm。
9、根据权利要求2所述的风力涡轮，其特征是，各齿是不相同的。
10、根据权利要求1所述的风力涡轮，其特征是，其形状为波形。
11、根据权利要求2-10所述的风力涡轮，其特征是，锯齿的顶角α小于150°，最好为10°。
CN94118644A 1993-11-04 1994-10-07 风力涡轮 Pending CN1110368A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9301910A NL9301910A (nl) 1993-11-04 1993-11-04 Windturbine.
NL9301910 1993-11-04

Publications (1)

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CN1110368A true CN1110368A (zh) 1995-10-18

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US (1) US5533865A (zh)
EP (1) EP0652367A1 (zh)
CN (1) CN1110368A (zh)
FI (1) FI944650A (zh)
NL (1) NL9301910A (zh)
NO (1) NO943757L (zh)

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CN1317507C (zh) * 1998-12-09 2007-05-23 阿洛伊斯·沃本 一种风力发电设备的转子叶片
CN100347443C (zh) * 2002-02-22 2007-11-07 三菱重工业株式会社 机舱结构的风车
CN101684773A (zh) * 2008-09-26 2010-03-31 通用电气公司 风力涡轮机叶片
CN1936322B (zh) * 2005-09-22 2011-05-25 通用电气公司 风力涡轮机转子组件及具有声学折翼的叶片
CN102297074A (zh) * 2010-06-24 2011-12-28 通用电气公司 用于转子叶片构件的紧固装置
CN102374115A (zh) * 2010-08-23 2012-03-14 通用电气公司 用于风力涡轮中的转子叶片的叶片延伸部
CN102454540A (zh) * 2010-11-04 2012-05-16 通用电气公司 用于风力涡轮机转子叶片的降噪装置
CN102465828A (zh) * 2010-11-15 2012-05-23 通用电气公司 用于风力涡轮机中转子叶片的降噪装置
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CN113086169A (zh) * 2021-03-30 2021-07-09 吉林大学 一种减阻降噪的仿生螺旋桨及其制备方法
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