WO2015027890A1 - Wind turbine blade, wind turbine, and wind power generator - Google Patents

Wind turbine blade, wind turbine, and wind power generator Download PDF

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Publication number
WO2015027890A1
WO2015027890A1 PCT/CN2014/085151 CN2014085151W WO2015027890A1 WO 2015027890 A1 WO2015027890 A1 WO 2015027890A1 CN 2014085151 W CN2014085151 W CN 2014085151W WO 2015027890 A1 WO2015027890 A1 WO 2015027890A1
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WO
WIPO (PCT)
Prior art keywords
blade
wind turbine
rope
main
main blade
Prior art date
Application number
PCT/CN2014/085151
Other languages
French (fr)
Chinese (zh)
Inventor
陆中源
Original Assignee
Lu Zhongyuan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lu Zhongyuan filed Critical Lu Zhongyuan
Publication of WO2015027890A1 publication Critical patent/WO2015027890A1/en

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Classifications

    • 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
    • F03D1/0633—Rotors characterised by their aerodynamic shape 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
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/302—Segmented or sectional 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
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/31—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or 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

  • CN101825069A discloses a wind turbine blade folding structure which is capable of changing the size of the windward surface of the blade, but having a large change in the structure of the original blade. Summary of the invention
  • Embodiments of the present invention provide a wind turbine blade, a wind turbine having the wind turbine blade, and a wind power generator, the blade being capable of changing a windward surface area of the blade, and having a structural unit and a low cost.
  • a wind turbine blade comprising: a main blade; a sub-blade, the sub-blade being slidably disposed on the main blade along a longitudinal direction of the main blade to change a windward surface area of the blade .
  • the wind turbine blade further includes: a rope connected to the auxiliary blade; and a rope winch for causing the auxiliary blade to be along the longitudinal direction of the main blade along the main blade by the rope slide.
  • the wind turbine blade further comprises: a plurality of fixed pulleys respectively disposed at a blade root and a blade tip of the main blade, the rope being disposed around the plurality of fixed pulleys, so that the auxiliary blade acts on the rope Next, sliding along the longitudinal direction of the main blade toward the tip side or the leaf side.
  • the secondary blade is a thin plate collar surrounding a portion of the longitudinal direction of the primary blade.
  • the collar is transversely sectioned in the shape of a wing.
  • the wind turbine blade further includes: a guide disposed at an outer side of the main blade 1 at a side of the leading edge; a guided member disposed at a side of the auxiliary blade 4 at a side of the leading edge, wherein the guide member and the guide member The guided member slides the sub-blades in the longitudinal direction of the main blade.
  • the guide member is fixedly coupled to the front side of the main blade 1 and has opposite guiding grooves on both sides in the direction of the thickness of the blade, and the guided member is formed of an elastic plate, the elastic plate A curved portion connected to the side of the trailing blade and adjacent to the leading edge of the auxiliary blade and a guided portion extending inwardly from both end portions of the curved portion are respectively included, and the guided portions are respectively located in the guide grooves.
  • the rope winch is disposed in the main blade at the root of the blade.
  • the sheet has a wavy shape.
  • a portion of the sub-blades is slidably disposed within the main vane and is capable of extending and retracting in a direction of the main vane.
  • the collar is formed from an elastic material.
  • the secondary blade transverse section is in the shape of a wing.
  • the wind turbine blade further includes: a rope connected to the sub-blade; and a rope winch for sliding the sub-blade by the rope.
  • the wind turbine blade further comprises: a plurality of fixed pulleys respectively disposed at a blade root and a blade tip of the main blade, the rope being disposed around the plurality of fixed pulleys, so that the auxiliary blade acts on the rope Next, slide along the longitudinal direction of the main blade toward the tip side or the leaf #> side.
  • the invention provides a wind turbine comprising the wind turbine blade described above.
  • the invention provides a wind power generator comprising the wind turbine described above.
  • the collar is of a thin profile in a horizontal profile and is only subjected to gravity.
  • FIG. 1 is a structural view of a wind turbine blade according to a first embodiment of the present invention when the surface area is maximum (some of the small structures are omitted in the drawing to avoid the line being too dense and not clear, the same applies hereinafter).
  • Fig. 2 is a structural view of the wind turbine blade of the first embodiment when the surface area is the smallest.
  • Figure 3 is a cross-sectional view showing the structure of the sub-blade shown in Figure 1.
  • Figure 4 is a cross-sectional view showing the partial structure of B-B of Figure 3;
  • Figure 5 is a cross-sectional view showing the partial structure of the C-C of Figure 3.
  • Figure 6 is a cross-sectional view taken along line D-D of Figure 3.
  • Figure 7 is a cross-sectional view taken along line A-A of Figure 2;
  • Figure 8 is a longitudinal cross-sectional view of the blade root structure of Figure 1 or Figure 2.
  • Figure 9 is a longitudinal cross-sectional view showing the structure of the main blade and sub-blade joints when the surface area of the wind turbine blade is the smallest according to the second embodiment of the present invention.
  • Figure 10 is a cross-sectional view taken along line E-E of Figure 9.
  • FIG 11 is a longitudinal cross-sectional view showing the blade root structure of the second embodiment.
  • the wind turbine blade according to an embodiment of the invention comprises: a main blade 1; a sub-blade 4, the sub-blade 4 being slidably disposed along the longitudinal direction of the main blade 1
  • the main blade 1 changes the size of the windward surface area of the blade.
  • the wind turbine blade further comprises: a rope 3 connected to the sub-blade 4; and a rope winch 10 for sliding the sub-blade 4 along the main blade 1 in the longitudinal direction of the main blade 1 by the rope 3.
  • the rope winch 10 can be disposed in the main blade 1 at the root of the blade.
  • the wind turbine can be a horizontal axis wind turbine.
  • the wind turbine blade further comprises: a plurality of fixed pulleys 2, respectively disposed at the blade root and the tip of the main blade 1, and the rope 3 is disposed around the plurality of fixed pulleys 2,
  • the sub-blades 4 are slid toward the tip end side or the blade root side in the longitudinal direction of the main blade 1 by the action of the rope 3.
  • the sub-blades 4 are thin plate collars surrounding a part of the longitudinal direction of the main blades 1.
  • the collar has a lateral cross-section that is wing-shaped.
  • the collar can be formed from an elastic material.
  • the sheet may have a wavy shape.
  • the wind turbine blade further includes: a guide member disposed outside the main blade 1 at a side of the leading edge; a guided member disposed at the side of the auxiliary blade 4 at a side of the leading edge, passing the guide member and the guided member
  • the sub-blades 4 are slid along the longitudinal direction of the main blades 1.
  • the guide member is fixedly coupled to the front side of the main blade 1 and has opposite guide grooves on both sides in the direction of the thickness of the blade, and the guided member is formed of an elastic plate, and the elastic plate includes A curved portion that is connected to the side of the leading blade 4 and adjacent to the inner edge of the sub-blade 4 and a guided portion that extends inwardly from both end portions of the curved portion, the guided portions are respectively located in the guide grooves. Thereby, the guided member is deformed in accordance with the deformation of the sub-blade 4.
  • a part of the sub-vane 4 is slidably disposed in the main blade 1 and is capable of extending and retracting in the longitudinal direction of the main blade 1.
  • the lateral section of the secondary blade 4 may be wing shaped.
  • the wind turbine blade further includes: a rope 3 connected to the sub-blade 4; and a rope winch 10 for sliding the sub-blade 4 by the rope 3.
  • the wind turbine blade may further comprise: a plurality of fixed pulleys 2 respectively disposed at the blade root and the tip of the main blade 1, and the rope 3 is disposed around the plurality of fixed pulleys 2 such that the auxiliary blade 4 is under the action of the rope 3
  • the main blade 1 slides in the longitudinal direction toward the tip side or the blade side.
  • the sub-blades 4 are relatively moved in the longitudinal direction of the main blade 1 by the action of the rope 3.
  • the rope 3 material can be stainless steel.
  • the first embodiment of the sub-blade 4 is a thin plate collar surrounding the main blade 1, and the collar is transversely profiled as the collar approaches the main blade tip. It is a thin wing shape as shown in Figure 6.
  • the transverse section of the collar is a thick wing shape as shown in Fig. 7, and the shape and aspect ratio of the main blade 1 and the sub-blade 4 are close.
  • the sub-blades 4 can be moved to one of the two positions shown in Figs. 1 and 2 by the action of the rope 3, or can be moved to these two types. The location between the locations.
  • the material for manufacturing the sub-blade 4 ring sleeve may be a stainless steel sheet having a thickness of less than 1 mm, and the sub-blade 4 may have a width of about 1 m or more, so that it has sufficient elasticity and wind pressure to make the sub-blade 4 sleeve deformable and tight.
  • the different sections of the main blade 1 having different thicknesses may have different wing profiles in different transverse sections.
  • the opening edge of the sub-blade 4 can be slightly rolled outward; in order to reduce the dust between the relative moving mating surfaces, the rolled edge can be made of a soft material. Strip dusting brush.
  • the auxiliary blade 4 is sleeved with a predetermined elastic force to sandwich the main blade 1. Under the set sub-blade 4 size and the predetermined medium-low speed wind force, the blade can withstand the strength after the sub-blade 4 is installed. The blade can work normally when it is not exceeded.
  • the guide member 5 and the guided member 6 are respectively fixed to the main blade 1 and the sub-blade 4, and are completed by the screw 8 and the rivet 7.
  • the bonding and fixing method it is preferable to increase the bonding and fixing method.
  • the trailing end of the proximal tip guide 5 preferably has a raised stop card to ensure that the secondary vane 4 does not leave the guide 5 in the event of the disconnection of the cord 3.
  • the guide 5 and the guided member 6 should be long enough to ensure the limit control of the sub-blades 4. As can be seen from Fig.
  • the sectional shape and the aspect ratio of the main blade 1 and the sub-blade 4 are close, and the guide member 5 is located at the leading edge of the main blade 1, and the sectional size thereof is small with respect to the main blade 1.
  • it can be designed as the shape with the smallest drag coefficient as much as possible, so that the influence on the aerodynamic performance of the main blade 1 is minimal.
  • the sub-blade 4 ring sleeve should be located in different parts of the main blade 1.
  • the first embodiment has a pair of fixed pulleys 2 beside the tip of the main blade 1, and the outermost edge of the main blade 1 has a fixed pulley 2 at the outermost edge of the main blade 1, and a pair of fixed pulleys 2 at the root of the main blade 1 and Rope winch 10.
  • the two ends of one of the ropes 3 are fixedly connected to the sub-blades 4 by the two ends of the guide member (restricted strip) 6, respectively.
  • the rope winch 10 rotates clockwise, the rope 3 shown in FIG. 3 drives the sub-blade 4 to move toward the main blade 1 direction.
  • the rope winch 10 rotates counterclockwise, the rope 3 drives the sub-blade 4 to the main blade.
  • the sub-blade 4 is sleeved under the condition that the deformation elastic force meets the requirements, and the weight is as small as possible, so that
  • the thin plate of the sub-blade 4 is a corrugated plate or a corrugated plate.
  • the portion of the sub-blade 4 of the second embodiment is slidable longitudinally in the portion of the main blade 1, and the sub-blade 4 has a wing-shaped cross section.
  • the portion of the sub-blade 4 is removed within the main blade 1, it has better aerodynamic performance.
  • the second embodiment has a fixed pulley 2 beside the tip of the main blade 1 and a fixed pulley 2 and a rope winch 10 at the root of the main blade 1. Both ends of a rope 3 are connected to the end of the sub-blade 4 away from the tip by a joint 12.
  • the rope winch 10 shown in FIG. 11 rotates clockwise
  • the rope 3 shown in FIG. 9 drives the sub-blade 4 to move toward the tip direction.
  • the rope winch 10 rotates counterclockwise
  • the rope 3 drives the sub-blade 4 to the main blade. 1 The direction of the direction moves.
  • a sealing cover 11 may be provided at each fixed pulley, that is, the opening of the rope 3 into and out of the blade; at the movable engagement of the main blade 1 and the sub-blade 4, there may be a sealing port.
  • a plurality of limit sleeves 9 are fixed on the edge of the main blade 1 through which it passes.
  • a heating wire or an electric heating pipe can be arranged at the edge of the blade.
  • embodiments of the present invention also provide a wind turbine comprising the wind turbine blade described above.
  • embodiments of the present invention also provide a wind power generator including the wind power machine described above.
  • the blade can largely vary the width of the sub-blade as required, and the size and distribution of the projected area of the windward surface of the blade also vary with the width, maintaining the existing horizontal axis wind.
  • the main advantages of the wing-type blades are that the modifications are only minimal changes in the unimportant areas of the original blades. Although the blade working rotation resistance is slightly increased, the wind energy utilization coefficient is still greatly improved at the medium and low wind speeds, and the annual power generation of the wind turbine is correspondingly increased. In the large and medium-sized wind farms in the field, the old blades can be modified on site. The relative cost of increase is small.

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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)

Abstract

A wind turbine blade, comprising: a primary blade (1); a secondary blade (4), the secondary blade (4) being arranged slidably on the primary blade (1) along the vertical direction of the primary blade (1) so as to change the windward surface area of the blade.

Description

风力机叶片、 风力机以及风力发电机 本申请要求 2013年 8月 26日提交的、 申请号为 201310372833.6的中国专利申请的优 先权， 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及一种风力机叶片、 风力机、 以及风力发电机。 背景技术  BACKGROUND OF THE INVENTION This application claims priority to Chinese Patent Application Serial No. 2013. TECHNICAL FIELD The present invention relates to a wind turbine blade, a wind turbine, and a wind power generator. Background technique
CN101825069A公开了一种风力发电机叶片折叠结构，该折叠结构能够改变叶片迎风表 面积大小， 但是对原叶片的结构改变较大。 发明内容  CN101825069A discloses a wind turbine blade folding structure which is capable of changing the size of the windward surface of the blade, but having a large change in the structure of the original blade. Summary of the invention
本发明的实施例提供一种风力机叶片、 具有该风力机叶片的风力机以及风力发电机， 该叶片能够改变叶片迎风表面积大小， 并且结构筒单、 成本低。 根据本发明的实施例， 提供了一种风力机叶片， 风力机叶片包括： 主叶片； 副叶片， 所述副叶片沿着主叶片的纵向方向可滑动地设置于主叶片以改变叶片迎风表面积大小。  Embodiments of the present invention provide a wind turbine blade, a wind turbine having the wind turbine blade, and a wind power generator, the blade being capable of changing a windward surface area of the blade, and having a structural unit and a low cost. According to an embodiment of the present invention, there is provided a wind turbine blade, the wind turbine blade comprising: a main blade; a sub-blade, the sub-blade being slidably disposed on the main blade along a longitudinal direction of the main blade to change a windward surface area of the blade .
根据本发明的实施例， 所述的风力机叶片还包括： 绳索， 该绳索与副叶片相连接； 以 及绳索绞车， 用于通过绳索使所述副叶片沿着主叶片在主叶片的纵向方向上滑动。  According to an embodiment of the present invention, the wind turbine blade further includes: a rope connected to the auxiliary blade; and a rope winch for causing the auxiliary blade to be along the longitudinal direction of the main blade along the main blade by the rope slide.
根据本发明的实施例， 所述的风力机叶片还包括： 多个定滑轮， 分别设置在主叶片的 叶根和叶尖处， 绳索围绕多个定滑轮设置， 以使副叶片在绳索的作用下， 沿着主叶片纵向 方向朝向叶尖侧或叶#^侧滑动。  According to an embodiment of the invention, the wind turbine blade further comprises: a plurality of fixed pulleys respectively disposed at a blade root and a blade tip of the main blade, the rope being disposed around the plurality of fixed pulleys, so that the auxiliary blade acts on the rope Next, sliding along the longitudinal direction of the main blade toward the tip side or the leaf side.
根据本发明的实施例， 副叶片是围绕着主叶片的纵向方向的一部分的薄板环套。  According to an embodiment of the invention, the secondary blade is a thin plate collar surrounding a portion of the longitudinal direction of the primary blade.
根据本发明的实施例， 该环套横向剖面呈翼形。  According to an embodiment of the invention, the collar is transversely sectioned in the shape of a wing.
根据本发明的实施例， 所述的风力机叶片还包括： 设置于主叶片 1 外部位于前缘旁边 的引导件； 设置于副叶片 4 内部位于前缘旁边的被引导件， 其中通过引导件和被引导件使 副叶片沿着主叶片的纵向方向滑动。  According to an embodiment of the present invention, the wind turbine blade further includes: a guide disposed at an outer side of the main blade 1 at a side of the leading edge; a guided member disposed at a side of the auxiliary blade 4 at a side of the leading edge, wherein the guide member and the guide member The guided member slides the sub-blades in the longitudinal direction of the main blade.
根据本发明的实施例， 所述引导件在主叶片 1 外部与前缘旁边固定连接， 并且在叶片 厚度的方向上的两侧具有相对的导向槽， 被引导件由弹性板形成， 该弹性板包括在副叶片 内部与前缘旁边连接并与副叶片 4 内壁邻接的弯曲部分和从弯曲部分的两个端部向内延伸 的被引导部分， 该被引导部分分别位于导向槽中。 根据本发明的实施例， 绳索绞车设置在主叶片中、 叶根处。 According to an embodiment of the present invention, the guide member is fixedly coupled to the front side of the main blade 1 and has opposite guiding grooves on both sides in the direction of the thickness of the blade, and the guided member is formed of an elastic plate, the elastic plate A curved portion connected to the side of the trailing blade and adjacent to the leading edge of the auxiliary blade and a guided portion extending inwardly from both end portions of the curved portion are respectively included, and the guided portions are respectively located in the guide grooves. According to an embodiment of the invention, the rope winch is disposed in the main blade at the root of the blade.
根据本发明的实施例， 薄板具有波状形状。  According to an embodiment of the invention, the sheet has a wavy shape.
根据本发明的实施例， 副叶片的一部分可滑动地设置在主叶片内并能够沿着主叶片的 从向方向伸出和缩回。  According to an embodiment of the invention, a portion of the sub-blades is slidably disposed within the main vane and is capable of extending and retracting in a direction of the main vane.
根据本发明的实施例， 该环套由弹性材料形成。  According to an embodiment of the invention, the collar is formed from an elastic material.
根据本发明的实施例， 副叶片横向剖面为翼形。  According to an embodiment of the invention, the secondary blade transverse section is in the shape of a wing.
根据本发明的实施例， 所述的风力机叶片还包括： 绳索， 该绳索与副叶片相连接； 以 及绳索绞车， 用于通过绳索使所述副叶片滑动。  According to an embodiment of the present invention, the wind turbine blade further includes: a rope connected to the sub-blade; and a rope winch for sliding the sub-blade by the rope.
根据本发明的实施例， 所述的风力机叶片还包括： 多个定滑轮， 分别设置在主叶片的 叶根和叶尖处， 绳索围绕多个定滑轮设置， 以使副叶片在绳索的作用下， 沿着主叶片纵方 向朝向叶尖侧或叶#>侧滑动。  According to an embodiment of the invention, the wind turbine blade further comprises: a plurality of fixed pulleys respectively disposed at a blade root and a blade tip of the main blade, the rope being disposed around the plurality of fixed pulleys, so that the auxiliary blade acts on the rope Next, slide along the longitudinal direction of the main blade toward the tip side or the leaf #> side.
根据本发明的实施例， 本发明提供了一种风力机， 该风力机包括上述风力机叶片。 根据本发明的实施例， 本发明提供了一种风力发电机， 该风力发电机包括上述风力机。 才艮据本发明的实施例， 该环套横向剖面在水平状并只受重力作用时呈薄翼形。 附图说明  According to an embodiment of the invention, the invention provides a wind turbine comprising the wind turbine blade described above. According to an embodiment of the invention, the invention provides a wind power generator comprising the wind turbine described above. According to an embodiment of the invention, the collar is of a thin profile in a horizontal profile and is only subjected to gravity. DRAWINGS
图 1是根据本发明的第一实施例的风力机叶片在表面积最大时的结构图（图中部分细小 结构省略不画， 以避免图面线条过密而看不清,下同）。  BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structural view of a wind turbine blade according to a first embodiment of the present invention when the surface area is maximum (some of the small structures are omitted in the drawing to avoid the line being too dense and not clear, the same applies hereinafter).
图 2是第一个实施例的风力机叶片在表面积最小时的结构图。  Fig. 2 is a structural view of the wind turbine blade of the first embodiment when the surface area is the smallest.
图 3是图 1所示副叶片处的结构剖面图。  Figure 3 is a cross-sectional view showing the structure of the sub-blade shown in Figure 1.
图 4是图 3的 B-B局部结构剖面图。  Figure 4 is a cross-sectional view showing the partial structure of B-B of Figure 3;
图 5是图 3的 C-C局部结构剖面图。  Figure 5 is a cross-sectional view showing the partial structure of the C-C of Figure 3.
图 6是图 3的 D-D剖面图。  Figure 6 is a cross-sectional view taken along line D-D of Figure 3.
图 7是图 2的 A-A剖面图。  Figure 7 is a cross-sectional view taken along line A-A of Figure 2;
图 8是图 1或图 2的叶片根部结构纵向剖面图。  Figure 8 is a longitudinal cross-sectional view of the blade root structure of Figure 1 or Figure 2.
图 9是根据本发明的第二个实施例的风力机叶片表面积最小时、 主叶片和副叶片结合 处结构的纵向剖面图。  Figure 9 is a longitudinal cross-sectional view showing the structure of the main blade and sub-blade joints when the surface area of the wind turbine blade is the smallest according to the second embodiment of the present invention.
图 10是图 9的 E-E剖面图。  Figure 10 is a cross-sectional view taken along line E-E of Figure 9.
图 11是第二个实施例叶片根部结构的纵向剖面图。 具体实施方式 从图 1、 2、 3和图 9可见， 根据本发明的实施例的风力机叶片包括： 主叶片 1 ; 副叶片 4, 所述副叶片 4沿着主叶片 1的纵向方向可滑动地设置于主叶片 1以改变叶片迎风表面积 大小。 风力机叶片还包括： 绳索 3 , 该绳索 3与副叶片 4相连接； 以及绳索绞车 10, 用于 通过绳索 3使所述副叶片 4沿着主叶片 1在主叶片 1的纵向方向上滑动。 绳索绞车 10可以 设置在主叶片 1 中、 叶根处。 作为选择， 也可以设置其它的移动装置来使所述副叶片 4沿 着主叶片 1在主叶片 1 的纵向方向上滑动， 例如链条装置， 螺杆和螺母装置等。 风力机可 以是水平轴式风力机。 Figure 11 is a longitudinal cross-sectional view showing the blade root structure of the second embodiment. detailed description As seen from Figures 1, 2, 3 and 9, the wind turbine blade according to an embodiment of the invention comprises: a main blade 1; a sub-blade 4, the sub-blade 4 being slidably disposed along the longitudinal direction of the main blade 1 The main blade 1 changes the size of the windward surface area of the blade. The wind turbine blade further comprises: a rope 3 connected to the sub-blade 4; and a rope winch 10 for sliding the sub-blade 4 along the main blade 1 in the longitudinal direction of the main blade 1 by the rope 3. The rope winch 10 can be disposed in the main blade 1 at the root of the blade. Alternatively, other moving means may be provided to slide the sub-blades 4 along the main blade 1 in the longitudinal direction of the main blade 1, such as a chain device, a screw and nut device, and the like. The wind turbine can be a horizontal axis wind turbine.
如图 1、 2、 3和图 9所示， 风力机叶片还包括： 多个定滑轮 2, 分别设置在主叶片 1的 叶根和叶尖处， 绳索 3围绕多个定滑轮 2设置， 以使副叶片 4在绳索 3的作用下， 沿着主 叶片 1纵向方向朝向叶尖侧或叶根侧滑动。  As shown in Figures 1, 2, 3 and 9, the wind turbine blade further comprises: a plurality of fixed pulleys 2, respectively disposed at the blade root and the tip of the main blade 1, and the rope 3 is disposed around the plurality of fixed pulleys 2, The sub-blades 4 are slid toward the tip end side or the blade root side in the longitudinal direction of the main blade 1 by the action of the rope 3.
如图 1至 8所示， 副叶片 4是围绕着主叶片 1的纵向方向的一部分的薄板环套。 该环 套横向剖面呈翼形。 该环套可由弹性材料形成。 薄板可以具有波状形状。  As shown in Figs. 1 to 8, the sub-blades 4 are thin plate collars surrounding a part of the longitudinal direction of the main blades 1. The collar has a lateral cross-section that is wing-shaped. The collar can be formed from an elastic material. The sheet may have a wavy shape.
如图 4至 7所示， 风力机叶片还包括： 设置于主叶片 1外部位于前缘旁边的引导件； 设置于副叶片 4 内部位于前缘旁边的被引导件， 通过引导件和被引导件使副叶片 4沿着主 叶片 1 的纵向方向滑动。 根据本发明的示例， 所述引导件在主叶片 1外部与前缘旁边固定 连接， 并且在叶片厚度的方向上的两侧具有相对的导向槽， 被引导件由弹性板形成， 该弹 性板包括在副叶片 4 内部与前缘旁边连接并与副叶片 4 内壁邻接的弯曲部分和从弯曲部分 的两个端部向内延伸的被引导部分， 该被引导部分分别位于导向槽中。 由此， 被引导件随 着副叶片 4的变形而变形。  As shown in FIGS. 4 to 7, the wind turbine blade further includes: a guide member disposed outside the main blade 1 at a side of the leading edge; a guided member disposed at the side of the auxiliary blade 4 at a side of the leading edge, passing the guide member and the guided member The sub-blades 4 are slid along the longitudinal direction of the main blades 1. According to an example of the present invention, the guide member is fixedly coupled to the front side of the main blade 1 and has opposite guide grooves on both sides in the direction of the thickness of the blade, and the guided member is formed of an elastic plate, and the elastic plate includes A curved portion that is connected to the side of the leading blade 4 and adjacent to the inner edge of the sub-blade 4 and a guided portion that extends inwardly from both end portions of the curved portion, the guided portions are respectively located in the guide grooves. Thereby, the guided member is deformed in accordance with the deformation of the sub-blade 4.
如图 9至 11所示， 才 居本发明的实施例， 副叶片 4的一部分可滑动地设置在主叶片 1 内并能够沿着主叶片 1 的纵向方向伸出和缩回。 副叶片 4横向剖面可以为翼形。 所述风力 机叶片还包括： 绳索 3 , 该绳索 3与副叶片 4相连接； 以及绳索绞车 10, 用于通过绳索 3 使所述副叶片 4滑动。 风力机叶片还可以包括： 多个定滑轮 2, 分别设置在主叶片 1的叶根 和叶尖处， 绳索 3围绕多个定滑轮 2设置， 以使副叶片 4在绳索 3的作用下， 沿着主叶片 1 纵方向朝向叶尖侧或叶根侧滑动。  As shown in Figs. 9 to 11, in the embodiment of the present invention, a part of the sub-vane 4 is slidably disposed in the main blade 1 and is capable of extending and retracting in the longitudinal direction of the main blade 1. The lateral section of the secondary blade 4 may be wing shaped. The wind turbine blade further includes: a rope 3 connected to the sub-blade 4; and a rope winch 10 for sliding the sub-blade 4 by the rope 3. The wind turbine blade may further comprise: a plurality of fixed pulleys 2 respectively disposed at the blade root and the tip of the main blade 1, and the rope 3 is disposed around the plurality of fixed pulleys 2 such that the auxiliary blade 4 is under the action of the rope 3 The main blade 1 slides in the longitudinal direction toward the tip side or the blade side.
根据本发明的实施例， 副叶片 4是在绳索 3的作用下， 沿着主叶片 1纵方向相对移动 其位置的。 绳索 3材料可以是不锈钢。  According to the embodiment of the present invention, the sub-blades 4 are relatively moved in the longitudinal direction of the main blade 1 by the action of the rope 3. The rope 3 material can be stainless steel.
从图 1、 2、 3、 4、 5、 6、 7可见， 第一个实施例副叶片 4是围绕着主叶片 1的部分的 薄板环套， 环套接近主叶片尖时该环套横向剖面为图 6 所示薄翼形。 环套接近主叶片根部 时该环套横向剖面为图 7所示厚翼形,主叶片 1和副叶片 4的形状和长宽比可以接近。 副叶 片 4在绳索 3的作用下， 可以移动至图 1、 2所示的二种位置之一， 或者可以移动至这二种 位置之间的位置。 副叶片 4在上述不同位置时， 其宽度不同， 对迎风面的投影面积大小不 同， 这样,只要用电力机构拖动绳索 3 , 可根据不同风速自动控制该电力机构， 就能较大程 度地能按需要按风速， 大幅度变化叶片迎风表面积大小和分布。 一般， 制造副叶片 4 环套 的材料可以是厚度不到 1毫米不锈钢薄板， 而副叶片 4宽度可约 1米以上， 所以其有足够 的弹性和风压力一起使得副叶片 4环套可以变形而紧套主叶片 1厚度不一样的不同部分， 其横向剖面可呈现出厚度不同的翼形。 为了降低主叶片 1和副叶片 4环套相对移动阻力,副 叶片 4 环套开口边沿可向外稍为翻卷； 为了减少相对移动配合面之间的灰尘， 在翻卷边沿 可装上用柔软材料制成的条状除尘刷。 As can be seen from Figures 1, 2, 3, 4, 5, 6, and 7, the first embodiment of the sub-blade 4 is a thin plate collar surrounding the main blade 1, and the collar is transversely profiled as the collar approaches the main blade tip. It is a thin wing shape as shown in Figure 6. When the collar is close to the root of the main blade, the transverse section of the collar is a thick wing shape as shown in Fig. 7, and the shape and aspect ratio of the main blade 1 and the sub-blade 4 are close. The sub-blades 4 can be moved to one of the two positions shown in Figs. 1 and 2 by the action of the rope 3, or can be moved to these two types. The location between the locations. When the sub-blades 4 are at different positions as described above, the widths thereof are different, and the projected area of the windward surface is different. Thus, as long as the rope 3 is dragged by the electric power mechanism, the electric power mechanism can be automatically controlled according to different wind speeds, and the electric power mechanism can be largely According to the wind speed, the size and distribution of the windward surface area of the blade are greatly changed. Generally, the material for manufacturing the sub-blade 4 ring sleeve may be a stainless steel sheet having a thickness of less than 1 mm, and the sub-blade 4 may have a width of about 1 m or more, so that it has sufficient elasticity and wind pressure to make the sub-blade 4 sleeve deformable and tight. The different sections of the main blade 1 having different thicknesses may have different wing profiles in different transverse sections. In order to reduce the relative movement resistance of the main blade 1 and the sub-blade 4, the opening edge of the sub-blade 4 can be slightly rolled outward; in order to reduce the dust between the relative moving mating surfaces, the rolled edge can be made of a soft material. Strip dusting brush.
从图 3、 4、 5、 6、 7可见， 第一个实施例主叶片 1和副叶片 4之间可设有用于使二者 只能在纵方向相对移动的引导装置，该引导装置包括引导件 (例如限位轨道) 5和被引导件（例 如限位条） 6, 引导件 5和被引导件 6分别与主叶片 1和副叶片 4相固定。 这样， 加上副叶 片 4环套以预定的弹力夹着主叶片 1产生的作用， 在设定的副叶片 4尺寸和预定的中低速 风力下， 安装副叶片 4后， 叶片能承受的强度是可以不超过的， 叶片在表面积最大时都能 够正常工作。 图 3、 5显示， 引导件 5和被引导件 6分别与主叶片 1和副叶片 4的相固定， 是用螺钉 8和铆钉 7来完成的， 当然,最好还应增加粘结固定法， 以更加牢固。 为了提高安 全系数， 近叶尖的引导件 5尾端最好有凸起的止位卡， 以确保万一绳索 3断开时， 副叶片 4 不离开引导件 5。 引导件 5和被引导件 6应当足够长， 以确保对副叶片 4的限位控制。 由图 7可见， 环套接近主叶片根部时,主叶片 1和副叶片 4的断面形状和长宽比接近， 引导件 5 位于主叶片 1前沿， 其断面尺寸相对于主叶片 1来说很小， 而且可尽量设计为风阻系数最 小的形状， 从而对主叶片 1的气动性能影响极小。 为获得较多风能， 不同的中低速风力时， 副叶片 4环套应位于主叶片 1不同部分。 风速越高， 副叶片 4环套位于主叶片 1叶尖越远， 风速接近风机的额定风速时， 变成如图 2所示的叶片表面积和外形与主叶片 1十分相同。 从这里也可见， 安装副叶片 4后， 叶片能承受的强度是可以不超过的。  3, 4, 5, 6, 7 it can be seen that between the main blade 1 and the sub-blade 4 of the first embodiment, there may be provided guiding means for moving the two relative to each other only in the longitudinal direction, the guiding means including guiding A member (for example, a limit rail) 5 and a guided member (for example, a stopper) 6, the guide member 5 and the guided member 6 are fixed to the main blade 1 and the sub-blade 4, respectively. Thus, in addition, the auxiliary blade 4 is sleeved with a predetermined elastic force to sandwich the main blade 1. Under the set sub-blade 4 size and the predetermined medium-low speed wind force, the blade can withstand the strength after the sub-blade 4 is installed. The blade can work normally when it is not exceeded. 3 and 5 show that the guide member 5 and the guided member 6 are respectively fixed to the main blade 1 and the sub-blade 4, and are completed by the screw 8 and the rivet 7. Of course, it is preferable to increase the bonding and fixing method. To be stronger. In order to increase the safety factor, the trailing end of the proximal tip guide 5 preferably has a raised stop card to ensure that the secondary vane 4 does not leave the guide 5 in the event of the disconnection of the cord 3. The guide 5 and the guided member 6 should be long enough to ensure the limit control of the sub-blades 4. As can be seen from Fig. 7, when the collar is close to the root of the main blade, the sectional shape and the aspect ratio of the main blade 1 and the sub-blade 4 are close, and the guide member 5 is located at the leading edge of the main blade 1, and the sectional size thereof is small with respect to the main blade 1. Moreover, it can be designed as the shape with the smallest drag coefficient as much as possible, so that the influence on the aerodynamic performance of the main blade 1 is minimal. In order to obtain more wind energy and different medium and low speed winds, the sub-blade 4 ring sleeve should be located in different parts of the main blade 1. The higher the wind speed, the farther the sub-blade 4 is located at the tip of the main blade 1 and the wind speed is close to the rated wind speed of the fan, and the surface area and shape of the blade as shown in Fig. 2 are very similar to those of the main blade 1. It can also be seen from this that after the sub-blade 4 is installed, the strength that the blade can withstand can be exceeded.
由图 3、 8可见， 第一个实施例主叶片 1叶尖旁有一对定滑轮 2, 主叶片 1最宽处外沿 有一个定滑轮 2, 主叶片 1叶根处有一对定滑轮 2和绳索绞车 10。 一条绳索 3的二端分别 通过被引导件（限位条） 6二端与副叶片 4固定连接。 当绳索绞车 10顺时针转动时， 图 3 所示绳索 3带动副叶片 4环套向主叶片 1才 部方向移动， 当绳索绞车 10逆时针转动时， 绳 索 3带动副叶片 4环套向主叶片 1叶尖方向移动。 为了防止水气进入叶片内， 在各定滑轮 处， 也基本就是绳索 3进出叶片的开口处， 应设置密封盖 11。 为了使绳索 3保持较正确的 形态， 在绳索 3所经过的主叶片 1左右边沿上， 固定有多个限位套 9。  As can be seen from Figures 3 and 8, the first embodiment has a pair of fixed pulleys 2 beside the tip of the main blade 1, and the outermost edge of the main blade 1 has a fixed pulley 2 at the outermost edge of the main blade 1, and a pair of fixed pulleys 2 at the root of the main blade 1 and Rope winch 10. The two ends of one of the ropes 3 are fixedly connected to the sub-blades 4 by the two ends of the guide member (restricted strip) 6, respectively. When the rope winch 10 rotates clockwise, the rope 3 shown in FIG. 3 drives the sub-blade 4 to move toward the main blade 1 direction. When the rope winch 10 rotates counterclockwise, the rope 3 drives the sub-blade 4 to the main blade. 1 The direction of the tip moves. In order to prevent moisture from entering the blade, at each fixed pulley, it is basically the opening of the rope 3 into and out of the blade, and a sealing cover 11 should be provided. In order to maintain the rope 3 in a more correct form, a plurality of limit sleeves 9 are fixed to the left and right edges of the main blade 1 through which the rope 3 passes.
为了第一个实施例副叶片 4 环套在变形弹力符合要求的条件下， 重量尽量小， 可以使 副叶片 4环套的薄板为瓦楞状板或波形板。 For the first embodiment, the sub-blade 4 is sleeved under the condition that the deformation elastic force meets the requirements, and the weight is as small as possible, so that The thin plate of the sub-blade 4 is a corrugated plate or a corrugated plate.
由图 9、 10可见， 第二个实施例副叶片 4的部分是可以在主叶片 1的部分内动配合纵 向滑动的， 副叶片 4横剖面呈翼形。 这样， 当副叶片 4的部分在主叶片 1 内移出时， 具有 较好的气动性能。  As can be seen from Figures 9 and 10, the portion of the sub-blade 4 of the second embodiment is slidable longitudinally in the portion of the main blade 1, and the sub-blade 4 has a wing-shaped cross section. Thus, when the portion of the sub-blade 4 is removed within the main blade 1, it has better aerodynamic performance.
由图 9、 11可见， 第二个实施例主叶片 1近叶尖旁有一个定滑轮 2, 主叶片 1叶根处有 一个定滑轮 2和绳索绞车 10。一条绳索 3的二端均通过接头 12与副叶片 4远离叶尖的一端 相连接。 当图 11所示的绳索绞车 10顺时针转动时， 图 9所示的绳索 3就带动副叶片 4向 叶尖方向移动， 当绳索绞车 10逆时针转动时， 绳索 3带动副叶片 4向主叶片 1才 部方向移 动。 为了防止水气进入， 在各定滑轮处， 也就是绳索 3 进出叶片的开口处， 可设置密封盖 11； 在主叶片 1和副叶片 4动配合处， 可有密封圏。 为了使绳索 3保持较正确的形态， 在 其所经过的主叶片 1边沿上， 固定有多个限位套 9。  As can be seen from Figures 9 and 11, the second embodiment has a fixed pulley 2 beside the tip of the main blade 1 and a fixed pulley 2 and a rope winch 10 at the root of the main blade 1. Both ends of a rope 3 are connected to the end of the sub-blade 4 away from the tip by a joint 12. When the rope winch 10 shown in FIG. 11 rotates clockwise, the rope 3 shown in FIG. 9 drives the sub-blade 4 to move toward the tip direction. When the rope winch 10 rotates counterclockwise, the rope 3 drives the sub-blade 4 to the main blade. 1 The direction of the direction moves. In order to prevent the ingress of moisture, a sealing cover 11 may be provided at each fixed pulley, that is, the opening of the rope 3 into and out of the blade; at the movable engagement of the main blade 1 and the sub-blade 4, there may be a sealing port. In order to maintain the rope 3 in a more correct form, a plurality of limit sleeves 9 are fixed on the edge of the main blade 1 through which it passes.
为了防水冻影响气动性能和绳索 3,在叶片边沿可装置电热线或电热管。 此外， 如图所示， 本发明的实施例还提供了一种风力机， 该风力机包括上述风力机叶 片。  In order to protect the aerodynamic performance and the rope 3 from waterproofing, a heating wire or an electric heating pipe can be arranged at the edge of the blade. Moreover, as shown, embodiments of the present invention also provide a wind turbine comprising the wind turbine blade described above.
此外， 本发明的实施例还提供了一种风力发电机， 该风力发电机包括上述的风力机。 根据本发明的实施例的叶片较大程度上能按需要按风速大幅度变化副叶片宽度， 叶片 对迎风面投影面积的大小和分布也随该宽度变而变， 保持了现有水平轴式风力机翼式叶片 全部主要优点，改装只是在原叶片的不重要地方的影响极小的改变。 虽然， 叶片工作转动阻 力稍为增大， 但在中低风速时的风能利用系数仍大幅度提高， 风电机年发电量相应大增； 在野外的大中型风电场,可现场对旧叶片进行改造， 增加的相对成本很小。  Further, embodiments of the present invention also provide a wind power generator including the wind power machine described above. According to the embodiment of the present invention, the blade can largely vary the width of the sub-blade as required, and the size and distribution of the projected area of the windward surface of the blade also vary with the width, maintaining the existing horizontal axis wind. The main advantages of the wing-type blades are that the modifications are only minimal changes in the unimportant areas of the original blades. Although the blade working rotation resistance is slightly increased, the wind energy utilization coefficient is still greatly improved at the medium and low wind speeds, and the annual power generation of the wind turbine is correspondingly increased. In the large and medium-sized wind farms in the field, the old blades can be modified on site. The relative cost of increase is small.

Claims

权利 要 求 Rights request
1、 一种风力机叶片， 包括： 1. A wind turbine blade, including:
主叶片 （1 ) ； Main blade (1);
副叶片 （4) , 所述副叶片 （4)沿着主叶片 （ 1 )的纵向方向可滑动地设置于主叶片 （ 1 ) 以改变叶片迎风表面积大小。 Secondary blade (4) is slidably provided on the main blade (1) along the longitudinal direction of the main blade (1) to change the windward surface area of the blade.
2、 根据权利要求 1所述的风力机叶片， 还包括： 2. The wind turbine blade according to claim 1, further comprising:
绳索 （3) , 该绳索 （3) 与副叶片 （4)相连接； 以及 Rope (3), the rope (3) is connected to the auxiliary blade (4); and
绳索绞车（ 10) , 用于通过绳索（3 )使所述副叶片 （4)沿着主叶片 （ 1 )在主叶片 （ 1 ) 的纵向方向上滑动。 The rope winch ( 10 ) is used to slide the auxiliary blade (4) along the main blade (1) in the longitudinal direction of the main blade (1) through the rope (3).
3、 根据权利要求 2所述的风力机叶片， 还包括： 3. The wind turbine blade according to claim 2, further comprising:
多个定滑轮（2) , 分别设置在主叶片 （1) 的叶根和叶尖处， 绳索 （3) 围绕多个定滑 轮（2)设置， 以使副叶片 （4)在绳索 （3 ) 的作用下， 沿着主叶片 （1 )纵向方向朝向叶 尖侧或叶 滑动。 A plurality of fixed pulleys (2) are respectively arranged at the blade root and blade tip of the main blade (1), and a rope (3) is arranged around the plurality of fixed pulleys (2) so that the auxiliary blade (4) is on the rope (3) Under the action of , it slides toward the tip side or blade along the longitudinal direction of the main blade (1).
4、 根据权利要求 1所述的风力机叶片， 其中： 4. The wind turbine blade according to claim 1, wherein:
副叶片 （4)是围绕着主叶片 （1 ) 的纵向方向的一部分的薄板环套。 The secondary blade (4) is a thin plate ring surrounding a part of the longitudinal direction of the main blade (1).
5、 根据权利要求 4所述的风力机叶片， 其中： 5. The wind turbine blade according to claim 4, wherein:
该环套横向剖面呈翼形。 The ring sleeve has a wing-shaped transverse section.
6、 根据权利要求 4所述的风力机叶片， 还包括： 6. The wind turbine blade according to claim 4, further comprising:
设置于主叶片 （ 1 )外部位于前缘旁边的引导件； A guide provided on the outside of the main blade (1) next to the leading edge;
设置于副叶片 （4) 内部位于前缘旁边的被引导件， The guided part located inside the auxiliary blade (4) next to the leading edge,
其中通过引导件和被引导件使副叶片 （4) 沿着主叶片 （1 ) 的纵向方向滑动。 The auxiliary blade (4) slides along the longitudinal direction of the main blade (1) through the guide part and the guided part.
7、 根据权利要求 6所述的风力机叶片， 其中： 7. The wind turbine blade according to claim 6, wherein:
所述引导件在主叶片 （ 1 )外部与前缘旁边固定连接， 并且在叶片厚度的方向上的两侧 具有相对的导向槽， 被引导件由弹性板形成， 该弹性板包括在副叶片 （4) 内部与前缘连接 并与副叶片 （4) 内壁邻接的弯曲部分和从弯曲部分的两个端部向内延伸的被引导部分， 该 被引导部分分别位于导向槽中。 The guide member is fixedly connected to the outside of the main blade (1) and beside the leading edge, and has opposite guide grooves on both sides in the direction of blade thickness. The guided member is formed by an elastic plate, which is included in the secondary blade ( 4) A curved portion internally connected to the leading edge and adjacent to the inner wall of the secondary blade (4) and a guided portion extending inwardly from both ends of the curved portion. The guided portions are respectively located in the guide grooves.
8、 根据权利要求 2所述的风力机叶片， 其中： 8. The wind turbine blade according to claim 2, wherein:
绳索绞车 （10)设置在主叶片 （1 ) 中、 叶根处。 The rope winch (10) is installed in the middle of the main blade (1) and at the blade root.
9、 根据权利要求 4所述的风力机叶片， 其中： 9. The wind turbine blade according to claim 4, wherein:
薄板具有波状形状。 The sheet has a corrugated shape.
10、 根据权利要求 1所述的风力机叶片， 其中： 10. The wind turbine blade according to claim 1, wherein:
副叶片 （4) 的一部分可滑动地设置在主叶片 （1 ) 内并能够沿着主叶片 （1) 的纵向方 向伸出和缩回。 A portion of the secondary blade (4) is slidably disposed within the main blade (1) and can extend and retract along the longitudinal direction of the main blade (1).
11、 根据权利要求 4所述的风力机叶片， 其中： 11. The wind turbine blade according to claim 4, wherein:
该环套由弹性材料形成。 The collar is formed of elastic material.
12、 根据权利要求 11所述的风力机叶片， 其中： 12. The wind turbine blade according to claim 11, wherein:
副叶片 （4)横向剖面为翼形。 The lateral section of the secondary blade (4) is wing-shaped.
13、 根据权利要求 10所述的风力机叶片， 还包括： 13. The wind turbine blade according to claim 10, further comprising:
绳索 （3) , 该绳索 （3) 与副叶片 （4)相连接； 以及 Rope (3), the rope (3) is connected to the auxiliary blade (4); and
绳索绞车 （10) , 用于通过绳索 （3)使所述副叶片 （4)滑动。 A rope winch ( 10 ) is used to slide the auxiliary blade (4) through the rope (3).
14、 根据权利要求 2所述的风力机叶片， 还包括： 14. The wind turbine blade according to claim 2, further comprising:
多个定滑轮（2) , 分别设置在主叶片 （1) 的叶根和叶尖处， 绳索 （3) 围绕多个定滑 轮（2)设置， 以使副叶片 （4)在绳索 （3 ) 的作用下， 沿着主叶片 （1 )纵方向朝向叶尖 侧或叶 滑动。 A plurality of fixed pulleys (2) are respectively arranged at the blade root and blade tip of the main blade (1), and a rope (3) is arranged around the plurality of fixed pulleys (2) so that the auxiliary blade (4) is on the rope (3) Under the action of , it slides toward the tip side or blade along the longitudinal direction of the main blade (1).
15、 根据权利要求 1所述的风力机叶片， 还包括： 15. The wind turbine blade according to claim 1, further comprising:
移动装置， 用于使所述副叶片（4)沿着主叶片（ 1 )在主叶片（ 1 )的纵向方向上滑动。 A moving device used to slide the secondary blade (4) along the main blade (1) in the longitudinal direction of the main blade (1).
16、 一种风力机， 该风力机包括权利要求 1所述的风力机叶片。 16. A wind turbine comprising the wind turbine blade according to claim 1.
17、 一种风力发电机， 该风力发电机包括权利要求 16所述的风力机。 17. A wind turbine, comprising the wind turbine according to claim 16.
PCT/CN2014/085151 2013-08-26 2014-08-26 Wind turbine blade, wind turbine, and wind power generator WO2015027890A1 (en)

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