CN107905941A - Improved horizontal shaft wind turbine and use method thereof - Google Patents

Improved horizontal shaft wind turbine and use method thereof Download PDF

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Publication number
CN107905941A
CN107905941A CN 201711120677 CN201711120677A CN107905941A CN 107905941 A CN107905941 A CN 107905941A CN 201711120677 CN201711120677 CN 201711120677 CN 201711120677 A CN201711120677 A CN 201711120677A CN 107905941 A CN107905941 A CN 107905941A
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Prior art keywords
wind turbine
hub
flange
wind
blades
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CN 201711120677
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Chinese (zh)
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CN107905941B (en )
Inventor
曹九发
朱卫军
赵永岭
柯世堂
徐浩然
李小川
孙振业
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扬州大学
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06Rotors
    • F03D1/065Rotors characterised by their construction, i.e. structural design details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06Rotors
    • F03D1/065Rotors characterised by their construction, i.e. structural design details
    • F03D1/0691Rotors characterised by their construction, i.e. structural design details of the hub
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022Adjusting aerodynamic properties of the blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022Adjusting aerodynamic properties of the blades
    • F03D7/0224Adjusting blade pitch
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022Adjusting aerodynamic properties of the blades
    • F03D7/0236Adjusting aerodynamic properties of the blades by changing the active surface of the wind engaging parts, e.g. reefing, telescoping, furling or coning
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022Adjusting aerodynamic properties of the blades
    • F03D7/024Adjusting aerodynamic properties of the blades of individual blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0264Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping or in emergency situation
    • F03D7/0268Parking or storm protection
    • 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
    • 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
    • Y02E10/723Control of turbines

Abstract

The invention discloses an improved horizontal shaft wind turbine and a use method thereof. The improved horizontal shaft wind turbine comprises a tower frame, a cabin, a main hub, wind turbine bladesand a drawing mechanism. The cabin is mounted at the top end of the tower frame, and the main hub is mounted at the front end of the cabin. The multiple wind turbine blades are evenly arranged aroundthe main hub and connected with the main hub through the drawing mechanism. The wind turbine blades can rotate on blade roots and are close to the cabin through the drawing mechanism, and therefore the unfolding directions of the wind turbine blades are perpendicular to the rotating plane of a wind turbine. When the wind turbine surfers from strong wind or typhoon, by means of the improved wind turbine blades and drawing mechanism, the wind turbine blades are folded and rotate near the blade roots, the wind turbine blades are close to the cabin, the unfolding directions of the blades are keptparallel to the coming flow wind speed to the greatest extent, and the wind shear unstable load of the wind turbine is weakened; and meanwhile, the wind load area of the wind turbine is greatly reduced, and therefore borne loads after the horizontal shaft wind turbine is reduced, and important significance in improving the typhoon resistance of the wind turbine and guaranteeing the service life of the wind turbine is achieved.

Description

一种改进型水平轴风力机及其使用方法 An improved horizontal axis wind turbine and method of use

技术领域 FIELD

[0001] 本发明属于风力发电领域,具体涉及一种改进型水平轴风力机及其使用方法。 [0001] The present invention belongs to the field of wind power, particularly relates to an improved horizontal axis wind turbine and method of use.

背景技术 Background technique

[0002] 海上风力机遇到台风时,风力机结构容易被破坏严重,特别有些破坏是致命性破坏。 [0002] When the offshore wind opportunity to typhoon, the wind turbine structure likely to be severely damaged, especially some damage is fatal damage. 针对海上水平轴风力机的抗台风设计,国内外学者对进行了不少的研究工作,如增加塔架结构强度、提高风力机的振动阻尼、变桨和偏航系统的改善。 Anti-typhoon at sea for horizontal axis wind turbine design, domestic and foreign scholars have conducted a lot of research work, such as increasing the strength of the tower structure, improve vibration damping of wind turbines, improving the variable pitch and yaw systems. 对于现在海上风力机的抗台风设计,出现的方法比较多,但是基本是被动增加风力机的结构强度,或者增加结构阻尼等,对于变桨偏航等措施都具有很强极限性。 For now anti-typhoon offshore wind turbine design, methodology appears more, but basically passive increase the structural strength of the wind machine, or to increase the structural damping for pitch yaw and other measures are highly LIMIT. 然而,台风的风速具有风速大,风速方向变化等特点,常见的方法不仅会增加成本,而且同时很快会出现极限性,g卩风力机结构很容易被强台风破坏。 However, with a wind speed of typhoon wind speed, direction changes in wind speed and other characteristics, common approach will not only increase costs, but will soon appear at the same time limit of, g Jie wind turbine structure is easily broken strong typhoon.

发明内容 SUMMARY

[0003] 本发明的针对现有技术中的不足,提供一种改进型水平轴风力机及其使用方法, 尤其针对三叶片海上水平轴风力机的抗台风提供了一种有效措施。 [0003] The present invention is directed to the inadequate prior art, to provide an improved horizontal axis wind turbine and method of use, in particular for the three-bladed horizontal axis wind turbine offshore typhoons provides an effective measure.

[0004] 为实现上述目的,本发明采用以下技术方案: [0004] To achieve the above object, the present invention employs the following technical solution:

[0005] —种改进型水平轴风力机,其特征在于,包括:塔架、机舱、主轮毂、风轮叶片和收拢机构;所述机舱安装在塔架的顶端,所述主轮毂安装在机舱的前端,多个风轮叶片均匀地围绕着主轮毂布置,所述风轮叶片通过收拢机构与主轮毂相连,所述收拢机构使得风轮叶片能够在叶根处旋转并向机舱靠拢,从而使风轮叶片的展向垂直于风轮旋转平面。 [0005] - species improved horizontal axis wind turbine, characterized in that, comprising: a tower, a nacelle, a main hub, and the rotor blade mechanism retracted; a nacelle mounted on top of the tower, a nacelle mounted on the main hub front end, a plurality of rotor blades uniformly arranged around the main hub, the rotor blade is connected by means of the main hub retracted, the mechanism retracted so that the rotor blade can be rotated to move closer to the blade root of the nacelle, so that show the rotor blades rotating in a plane perpendicular to the rotor.

[0006]为优化上述技术方案,采取的具体措施还包括: [0006] In order to optimize the technical proposal, specific measures also include:

[0007]所述收拢机构包括球形轮毂和旋转连接件,所述球形轮毂的一端为主轮毂连接端,球形轮毂的另一端连接旋转连接件,所述旋转连接件与风轮叶片固定连接,旋转连接件带动风轮叶片围绕球形轮毂的轴心旋转。 [0007] The folded means comprises a spherical hub and the rotary connecting member, one end of the spherical hub main hub connection end and the other end of the spherical hub connecting the rotary connecting member, said rotary connector and the rotor blade is fixedly connected to the rotary coupling the rotor blade driven to rotate about the axis of the spherical hub.

[0008]所述球形轮毂中开设有弧形的滑道槽,所述滑道槽的弧度范围为180。 [0008] The spherical hub defines a curved slide grooves, the slide groove 180 radians. ;球形轮毂中还设有法兰支撑固定凸台、两半式法兰、电机固定台、驱动电机和连接滑块,滑道槽、法兰支撑固定凸台和两半式法兰同轴设置;所述法兰支撑固定凸台围绕球形轮毂的内壁设置, 法兰支撑固定凸台上固定有两半式法兰,所述两半式法兰紧贴球形轮毂的内壁设置;所述电机固定台固定在球形轮毂的内壁上,电机固定台上安装有驱动电机,所述驱动电机的输出轴上固定有驱动齿轮,所述驱动齿轮与两半式法兰相啮合;所述连接滑块与滑道槽相配合,连接滑块的一端与两半式法兰固定连接,连接滑块的另一端伸出滑道槽与旋转连接件固定连接,驱动电机驱动两半式法兰旋转,两半式法兰带动连接滑块在滑道槽中滑动,从而带动旋转连接件围绕球形轮毂旋转。 ; Spherical hub flange is also provided with a boss fixed to the support, two semi-flange, the motor fixing table, and a drive motor connected to the slide, slide rails, fixed to the support flange and the boss halves disposed coaxially flange ; fixing said flange supporting bosses around the spherical inner wall of the hub flange is fixed to the support boss fixing flange halves, the two halves of the flange against the spherical inner wall of the hub; the motor fixing table on the inner wall of spherical hub motor mounted on the mounting fixed to a drive motor, the drive shaft of the motor output drive gear is fixed, and the two halves of the flange to engage a drive gear; the slider and the connector cooperating slide rails, with one end connected to the slider flange halves is fixedly connected to the other end of the slider projecting slide rails fixedly connected to the rotary connector, drive motor rotary flange halves, the two halves drives the connection flange slider chute groove slides, so as to drive the spherical hub about the rotation of the rotary member is connected.

[0009]所述滑道槽、法兰支撑固定凸台、两半式法兰和连接滑块的数量均为两个且互为一一对应的关系,电机固定台安装在两个两半式法兰之间,驱动电机采用双输出轴电机,驱动电机的上下两个输出轴分别与两个两半式法兰相配合。 [0009] The number of slide rails, the support flange fixing projection, and the flange halves are attached slider and two mutually-one relationship, the motor fixing table mounted two halves of formula between the flanges, the drive motor output shaft of the motor dual, upper and lower two output shafts respectively driving two motor flange halves mate.

[0010] 所述球形轮毂中还设有滑道槽盖板和盖板支撑件,所述滑道槽盖板呈弧形,滑道槽盖板的两端固定在连接滑块上,用于遮盖滑道槽的空隙,所述盖板支撑件固定在球形轮毂的内壁上,对滑道槽盖板进行支撑和导向。 [0010] The hub also provided a spherical slide groove cover and cover support member, showing the slide cover both ends of the arcuate groove, slide groove cover plate fixed to the guide block, for covering slide groove void, the plate support member on the inner wall of spherical hub, slide grooves for guiding and supporting the cover.

[0011] 所述球形轮毂两侧可拆卸地安装有两个侧导流罩。 [0011] The ball wheel hub detachably mounted on both sides with two side shroud.

[0012] 此外,还提出了以上改进型水平轴风力机的使用方法,其中,风轮叶片数量为三片,其特征在于,包括如下步骤: [0012] In addition, the above method is also proposed to use a modified horizontal axis wind turbine, wherein the number of rotor blades is three, characterized by comprising the steps of:

[0013] 步骤一、当风速长期大于额定风速或者收到台风的预警时,水平轴风力机停机,三个风轮叶片中的一个处于垂直于机舱上表面,其他两个分布在机舱两侧; [0013] Step a, when the wind speed is greater than the rated wind speed or received a long typhoon warning, the horizontal axis wind turbine stopped, three of the rotor blades in a perpendicular to the upper surface of the nacelle, the other two sides located in the cabin;

[0014] 步骤二、使上叶片变桨角旋转到0°,其他两个叶片变桨角分别旋转60°和120°,gp 使顺着旋转方向的第一个叶片变桨角为60°,第二个叶片为120°; [0014] Step two, the upper blade pitch rotation angle to 0 °, the other two blade pitch angle of 60 ° and 120 ° of rotation, respectively, so that GP along a rotational direction of the first blade pitch angle of 60 °, The second blade is 120 °;

[0015] 步骤三、启动驱动电机,通过四个驱动齿轮,带动两个两半式法兰旋转,三个旋转连接件开始沿着滑道槽旋转,使得风轮叶片向机舱靠拢,当三个风轮叶片都绕着叶根处的球形轮毂旋转90°时,完成风力机抗强风的控制策略; [0015] Step three, the motor starts driving, the four driving gear to drive the rotation of two flange halves, connected to three rotating member starts rotating along the slide rails, such that the rotor blades closer to the nacelle, when three when the rotor blades are at the blade root around the spherical rotation of the hub 90 °, strong anti-wind wind turbine complete control strategy;

[0016] 步骤四、当台风或者强风过后,风力机需要正常运作发电时,反向操作以上步骤, 实现风轮叶片重新回到正常运行工况状态。 [0016] Step four, when typhoon or strong wind, the wind power generation during normal operation of the machine needs to reverse the above steps, the rotor blades return to achieve normal operating condition state.

[0017] 本发明的有益效果是:通过增加叶片的收拢机构,具体包括球形轮毂和旋转连接件,实现了风力机的叶片向机舱靠拢的动作,使得风力机风轮旋转平面呈现收起状态,并且机舱两侧叶片后缘朝外,即弦长方向垂直于机舱两侧面,另外机舱正上方叶片弦长方向平行于机舱上表面,从而大大减少了风轮叶片受到的正向和侧向风荷载的面积,同时减弱了叶片受风剪切带来的不稳定风荷载强度,以至于使风力机叶片和整机载荷很大程度降低, 最终达到抵抗台风和强风的效果。 [0017] Advantageous effects of the invention are: by increasing the stowed mechanism of the blade, comprises a spherical hub and the rotary connecting member, to achieve a blade of a wind machine to move closer to the nacelle motion, such Wind Turbine rotational plane presented stowed state, and the rear edge of the blade on both sides of the nacelle outwardly, i.e., a direction perpendicular to the chord length of both sides of the nacelle, additional nacelle directly above the chord direction of the blade parallel to the upper surface of the nacelle, thus greatly reducing the wind turbine blade by the forward and lateral wind load area, while the reduced load strength of the blade by the wind shear instability caused by the wind, so that the wind turbine blade and machine load considerably reduced, to achieve the final effect of strong winds and wind resistance.

附图说明 BRIEF DESCRIPTION

[0018] 图la是本发明的整体正视图。 [0018] FIG. La is an overall elevational view of the invention.

[0019] 图lb是本发明的整体侧视图。 [0019] FIG lb is a side view of the present invention.

[0020]图2a是本发明叶片收拢状态下的整体侧视图。 [0020] FIG 2a is a side view of a blade according to the present invention, the entire folded state.

[0021]图2b是本发明叶片收拢状态下的局部侧视图。 [0021] FIG 2b is a partial side view of the blade of the present invention in the folded state.

[0022]图3a是本发明收拢机构的俯视图。 [0022] FIG 3a is a plan view of the mechanism of the present invention is collapsed.

[0023]图3b是本发明收拢机构的侧视图。 [0023] Figure 3b is a side view of the mechanism of the present invention is collapsed.

[0024]图3c是本发明收拢机构的正视图。 [0024] Figure 3c is a front view of the mechanism of the present invention is collapsed.

[0025]图3d是本发明收拢机构的立体图。 [0025] Figure 3d is a perspective view of the mechanism of the present invention is collapsed.

[0026]图4是本发明收拢机构的连接示意图。 [0026] FIG. 4 is a schematic view of the connection mechanism of the present invention is collapsed.

[0027]图5是本发明球形轮毂的结构示意图。 [0027] FIG. 5 is a structural diagram of the present invention, the spherical wheel hub.

[0028]图6是本发明滑道槽盖板的结构示意图。 [0028] FIG. 6 is a schematic view of the cover of the slide rails of the present invention.

[0029]图7是本发明正常叶片状态与叶片收拢状态的前来流工况时叶片风荷载对比图。 [0029] FIG. 7 is a blade according to the present invention, a normal state of the blade when the blade of a wind load comparison chart come a collapsed state flow conditions.

[0030]图8是本发明正常叶片状态与叶片收拢状态的前来流工况时叶片弯曲力矩对比图。 [0030] FIG. 8 is a comparative view of the blade bending moment come state flow conditions normally present invention, the blade with the blade retracted state.

[0031]附图标记如下:塔架1、机舱2、主轮毂3、风轮叶片4、收拢机构5、球形轮毂6、旋转连接件7、主轮毂连接端S、滑道槽9、法兰支撑固定凸台1〇、两半式法兰h、电机固定台12、驱动电机13、连接滑块14、驱动齿轮15、滑道槽盖板16、盖板支撑件17、导流罩18。 [0031] reference numerals are as follows: a tower, a nacelle 2, the main hub 3, the rotor blades 4, 5 folded bodies, spherical hub 6, the rotary connecting member 7, the main hub connection terminal S, slide rails 9, flange supporting and fixing bosses 1〇, H flange halves, the motor fixing table 12, the drive motor 13, the attached slider 14, the driving gear 15, the cover plate slide groove 16, the support plate 17, shroud 18.

具体实施方式 Detailed ways

[0032]现在结合附图对本发明作进一步详细的说明。 [0032] Now DRAWINGS The invention will be further described in detail.

[0033]如图la、lb所示的改进型水平轴风力机,包括塔架1、机舱2、主轮毂3、风轮叶片4和收拢机构5。 [0033] FIG La, modified horizontal axis wind turbine shown in LB, includes a tower 1, a nacelle 2, the main hub 3, the rotor blade 4 and 5 gather mechanism. 机舱2安装在塔架1的顶端,主轮毂3安装在机舱2的前端,风轮叶片4为三个,均匀地围绕着主轮毂3布置,主轮毂3先连接收拢机构5,再连接风轮叶片4。 A nacelle 2 mounted on top of the tower 1, the main hub 3 is mounted on the front end of the nacelle 2, the rotor blades 4 are three uniformly around the main hub 3 is disposed, the main hub 3 to connect the folded mechanism 5, and then connected to the rotor 4 leaves. 通过每个风轮叶片4的独立的收拢机构5使风轮叶片4向机舱2收拢。 By each wind mechanism 5 independent retracted blades 4 causes the rotor blade to the nacelle 4 2 retracted. 在改进的风轮叶4和收拢机构5作用下,风轮叶片4在叶根附近旋转,所有风轮叶片4向机舱2靠拢,使得风轮叶片4展向垂直于风轮旋转平面,同时风轮叶片4弦长方向能平行于侧面来流方向,风轮叶片4的收拢状态如图2a、2b 所示。 In an improved wind vane 4 and 5 effect collapsed mechanism, the rotor blade 4 in the vicinity of the root of rotation, all of the rotor blades 4 close to the cabin 2, so that the rotor blades 4 show the plane of rotation perpendicular to the wind turbine, while the air chord blades 4 can be parallel to the side direction to the flow direction, the rotor blades retracted state in FIG. 4 2a, 2b shown in FIG.

[0034] 进一步参见图3a-3d,收拢机构5包括球形轮毂6和旋转连接件7,球形轮毂6的一端为主轮毂连接端8,可采用螺栓把球形轮毂6和主轮毂3相连,另一端连接旋转连接件7。 [0034] With further reference to FIGS. 3a-3d, stowed mechanism 5 comprises a spherical hub 6 and the rotary connecting member 7, the spherical hub end 6 of the main hub connecting terminal 8, may be employed bolts spherical hub 6 and the main hub 3 is connected to the other end 7 connected to the rotary connector. 具体连接见图4,旋转连接件7与风轮叶片4通过螺栓固定连接,旋转连接件7带动风轮叶片4围绕球形轮毂6的轴心旋转。 Specific connection shown in Figure 4, the rotary member 7 is connected to the rotor blade 4 is fixedly connected by a screw, the rotary member 7 is connected to drive the rotor blade hub 4 to rotate about the axis 6 of the ball wheel. 球形轮毂6的两侧还设有两个侧导流罩18,当风轮叶片4正常运行时,具有保证叶根流场导流的作用,同时具有可拆卸功能,为球形轮毂6内部部件安装提供空间。 Both sides of the spherical hub 6 is also provided with two side shroud 18, when the rotor blade 4 during normal operation, having a blade root to ensure diversion of the flow field effect, while having a removable functionality, the hub 6 is mounted inside the ball wheel member provide space.

[0035]如图5所示,球形轮毂6中开设有弧形的滑道槽9,滑道槽9的弧度范围为180°。 [0035] 5, 6 in the spherical hub defines a curved slide grooves 9, 9 radians slide groove is 180 °. 球形轮毂6中还设有法兰支撑固定凸台10、两半式法兰11、电机固定台12、驱动电机13和连接滑块14,滑道槽9、法兰支撑固定凸台10和两半式法兰11同轴设置。 Spherical hub flange 6 is also provided with a support boss 10 is fixed, the two halves of flange 11, the motor fixing table 12, the drive motor 13 and the attached slider 14, slide grooves 9, the support flange 10 and the two fixing projections semi flange 11 disposed coaxially. 法兰支撑固定凸台10围绕球形轮毂6的内壁设置,法兰支撑固定凸台10上固定有两半式法兰11,两半式法兰11可以分解成两个半圈法兰,实现法兰紧贴球形轮毂6内壁的设置。 Fixing the support flange 10 around the spherical projection of the hub inner wall 6, fixed to the support flange is fixed to the boss halves of flange 11, the two halves of flange 11 can be decomposed into two half-rings on the flanges 10, implemented method provided orchid hub 6 against the spherical inner wall. 电机固定台12固定在球形轮毂6 的内壁上,电机固定台12上安装有驱动电机13,驱动电机13的输出轴上固定有驱动齿轮15, 驱动齿轮15与两半式法兰11相啮合。 Motor fixing table 12 is fixed on the inner wall of spherical hub 6, there is mounted a drive motor 13, the output shaft of the drive motor 13 is fixed to 15, the driving gear 15 and the two halves of the flange 11 engages the motor drive gear 12 fixed table. 连接滑块14与滑道槽9相配合,连接滑块14的一端通过螺栓与两半式法兰11固定连接,另一端伸出滑道槽9与旋转连接件7固定连接,驱动电机13 驱动两半式法兰11旋转,两半式法兰11带动连接滑块14在滑道槽9中滑动,从而带动旋转连接件7沿着滑道槽9围绕球形轮毂6旋转。 Attached slider 14 and the cooperating slide rails 9, one end of the slide 14 is connected by bolts 11 to the flange halves is fixedly connected, the other end of the slide groove 97 extending fixedly connected to the rotary connector, the drive motor 13 flange 11 is rotated two halves, the two halves of flange 11 is connected to drive the slider 14 slides in the slide groove 9, so that the hub 7 is rotated connection member 6 rotates along the chute groove 9 around the ball wheel.

[0036] 其中,滑道槽9、法兰支撑固定凸台10、两半式法兰11和连接滑块14的数量均为两个且互为一一对应的关系,电机固定台12安装在两个两半式法兰11之间,驱动电机13采用双输出轴电机,驱动电机13的上下两个输出轴分别与两个两半式法兰11相配合。 [0036] wherein the slide grooves 9, the support flange fixing projection 10, the number of flange halves 11 and 14 are connected to the slide and two mutually one to one relationship, the motor 12 is mounted on fixing table between the two flange halves 11, 13 dual drive motor output shaft of the motor, the upper and lower drive motor output shaft 13 are two halves of flange 11 mate.

[0037] 进一步参见图6,球形轮毂6中还设有滑道槽盖板16和盖板支撑件17,滑道槽盖板16呈弧形,滑道槽盖板16的两端固定在连接滑块14上,用于遮盖滑道槽9的空隙,盖板支撑件17固定在球形轮毂6的内壁上,对滑道槽盖板16进行支撑和导向。 [0037] With further reference to FIG. 6, the spherical hub cover plate 6 is also provided with grooves 16 and the slide plate support 17, the cover plate 16 curved slide groove, both ends of the slide grooves 16 is fixed to the connecting plate the slider 14, slide groove for covering the gap 9, the cover support member 17 is fixed on the inner wall of spherical hub 6, on the slide rails 16 support and guide the cover plate.

[0038]在工程应用中,对于海上和沿海岸的风力机经常会遇到台风天气,导致风力机出现不同程度的破坏。 [0038] In engineering applications, for the wind turbine at sea and along the coast often encounter typhoon weather, resulting in wind turbine varying degrees of damage. 因此针对这种强风的特殊情况,提供了风轮叶片可旋转收拢的风力机, 同时给出相应抗台风策略,即抗强风功能的水平轴风力机的使用方法,包括以下步骤: Thus for this special case of strong winds, there is provided a rotor blade of a wind turbine rotatably retracted, and gives the corresponding policy anti-typhoon, strong wind i.e. anti-function use of a horizontal axis wind turbine, comprising the steps of:

[0039]步骤一、当风场收到台风预警时,改进型风力机开始执行抗强风控制策略指令。 [0039] Step a, when the wind farm receives typhoon warning, begin improved wind turbine control policy instructions anti strong winds. 风轮叶片4运转到如图la、lb所示位置停机,即三个叶片中一个叶片处于垂直于机舱上表面, 其他两个叶片分布在机舱两侧。 4 the operation of the wind turbine blade to FIG la, lb stop position shown, i.e. three blades in a blade perpendicular to the surface of the nacelle, the other two blades located on both sides of the nacelle.

[0040] 步骤二、不同于一般风力机停机时的变桨到90°要求,本方法要求是上叶片变桨角旋转到〇°,其他两个叶片变桨角分别旋转60°和12(T (即使顺着旋转方向的第一个叶片变桨角为60°,第二个叶片为120°)。 [0040] Step two, generally different from the pitch of the wind turbine during shutdown to claim 90 °, this method requires the blade pitch angle is rotated to the square °, the blade pitch angle of the other two were 60 ° rotation and 12 (T (even if the first blade along a rotational direction of the pitch angle of 60 °, the second blade is 120 °).

[0041] 步骤三、启动电机系统,通过四个驱动齿轮15,带动两个两半式法兰11旋转,实现三个旋转连接件7开始沿着滑道槽9旋转,使得风轮叶片4向机舱2靠拢运动,当旋转角度达至1]90°时,完成风力机抗强风的控制策略(如图2a、2b、4所示)。 [0041] Step three, the system start the motor, the driving gear 15 through four, two halves of formula driven rotating flange 11, three pivotal connection achieved 7 starts rotating along the slide grooves 9, such that the rotor blade 4 moving closer nacelle 2, when the rotation angle to achieve 1] 90 °, to complete the control strategy of wind turbine anti strong wind (FIG. 2a, 2b, 4 shown).

[0042] 步骤四、当台风或者强风过后,风力机需要正常运作发电时,反向操作以上步骤, 实现风轮叶片4重新回到正常运行工况状态。 [0042] Step four, when typhoon or strong wind, the wind power machine needs to normal operation, a reverse operation of the above steps, the rotor blades 4 realized back to normal operating condition state.

[0043] 风轮叶片4都处于向机舱靠拢收起的状态时,对于风力机遇到台风时,具有很大的保护作用,主要体现三个方面:第一,风力机的受风面积减小,减少风力机受到的风载荷,不管来流从前面吹来还是从后面吹来,都可以达到很好的减载效果,甚至从侧面来流,由于叶片变桨的控制和叶片弦长方向的规定,使得侧面来流受风面积也大大减小;第二,风力机三个叶片靠拢,使得叶片位置水平高度差很小,大大减弱了风力机叶片的风剪切效应,从而疲劳载荷和极限载荷都会减弱;第三,风力机叶片靠拢在机舱周围(如图2a、2b所示),破坏了机舱受到来流流场,使得机舱受强风影响较小,起到保护机舱机构被强风破坏的功能。 When [0043] the rotor blades 4 are in the stowed closer to the nacelle state, to the wind encounters the typhoon, with a significant protective effect, mainly in three aspects: the first area of ​​the wind, the wind turbine is reduced, wind turbine by reducing the wind load, whether to flow from the front or from the rear blowing blowing, the carrier can achieve a good effect of reducing, or even to flow from the side, and a predetermined control blade chord direction of the blade due to the pitch , to the side so that the flow area is also greatly reduced by the wind; second, three wind turbine blades closer, so that the position of the level difference is small vane, greatly reduced the effect of wind shear wind turbine blade, so that the fatigue and ultimate load It will weaken; third, around the wind turbine blade close cabin (FIG. 2a, 2b shown), damage to the flow field by a nacelle, the nacelle so little influence by a strong wind, the nacelle protect mechanism functions disrupted strong winds . 这些对于风力机的结构保护和使用寿命具有重要的作用。 These structures play an important role for the protection and service life of the wind turbine.

[0044] 以某5MW的风力机为例,塔架高度为126m,风轮半径为60m,来流风速取40m/s。 [0044] In an example of a 5MW wind turbine, tower height of 126m, the rotor radius of 60m, take the wind velocity 40m / s. 进行了风轮旋转平面的前面来流工况和侧面来流工况CFD数值流场模拟计算。 It was calculated by the rotor rotational plane to the front and sides of the flow conditions for the flow conditions CFD numerical simulation of the flow field. 采用求解雷诺平均方程方法的流场计算,网格1100万,两种工况的风速都是35tn/s的强风工况。 Reynolds-averaged equations for solving the flow field calculated using the method of strong wind conditions grids 11 million, two conditions of wind speed are 35tn / s of. 分别计算得出了在三个叶片的收拢和未收拢状态下,风轮旋转平面正面来流和侧面来流的叶片叶根载荷,包括叶根弯矩和叶根剪力。 Were calculated in the three blades retracted and non-retracted state, the front plane of rotation of the rotor blade root to flow to the load and the side stream, comprising a blade root bending moment and shear blade root. (叶片1:位于垂直于机舱上表面的叶片,处于机舱上表面;叶片2和叶片3处于机舱两侧,其中叶片2与侧面风速来流边界同一侧)。 (1 blades: blades positioned perpendicular to the surface of the nacelle, the nacelle surface is on; blade 2 and the blade 3 at both sides of the nacelle, wherein the blade 2 and the side surface side of the border the same stream wind speed). 图7为叶片收拢和未收拢的风轮旋转平面正面来流工况的三个叶片叶根剪力图,从图中可以看出叶片收拢后,叶根载荷大大减小,特别是对于叶片1来说,由于迎风面积大大减少,使得载荷降低94% ;另外两个叶片也可以大概降低70%到80%左右的载荷。 7 is collapsed and non-collapsed leaves the rotor rotational plane to the front three blade root FIG shear flow conditions, and it can be seen from the figure the blade retracted, the blade root load is greatly reduced, particularly with respect to the blade 1 that due to the frontal area greatly reduced, so that the load reduction of 94%; the other two blades may be reduced about 70% to about 80% of the load. 图8为叶片收拢和未收拢的风轮旋转平面侧面来流工况的三个叶片叶根剪力图,从图中可以看出,叶片2受到的叶根载荷最大,但是经过叶片收拢后,三个叶片叶根载荷都减少了,并且叶片3受到叶片2和机舱的保护,载荷降低最明显,叶片1、2、3分别降低载荷32%、53%、80%。 8 is collapsed and non-collapsed leaves the rotor rotational plane to three blade root side view of a flow shear conditions can be seen from the figure, the blade 2 is subjected to the largest load of the blade root, but after the blade retracted, tris a blade root load are reduced, and the blade 2 and the blade 3 are protected by the nacelle, the most significant load reduction, 1,2,3 blade load reduction of 32%, 53%, 80%.

[0045]综上所述,本发明应用范围较广,可以使用于陆地和海上风力机,对大型风力机对抗强风具有明显降低载荷的功能,对于风力机大型化和海上风电场的发展具有重要意义。 [0045] In summary, a wide range of applications of the present invention may be used in the onshore and offshore wind turbine, for large wind turbine against strong wind loads having significantly reduced features, the development of large wind turbines and wind farms offshore has significant significance. [0046]需要注意的是,发明中所引用的如“上”、“下”、“左”、“右”、“前”、“后”等的用语,亦仅为便于叙述的明了,而非用以限定本发明可实施的范围,其相对关系的改变或调整,在无实质变更技术内容下,当亦视为本发明可实施的范畴。 [0046] Note that, such as "upper", "lower", "left", "right", "front" cited herein, the "rear" and the like terms, also merely for illustrative purpose, and not intended to limit the scope of the present invention may be practiced, to change or adjust their relative relationships, no substantial changes in the technical content, the category may be considered also when the embodiment of the present invention.

[0047]以上仅是本发明的优选实施方式,本发明的保护范围并不仅局限于上述实施例, 凡属于本发明思路下的技术方案均属于本发明的保护范围。 [0047] The above are only preferred embodiments of the present invention, the scope of the present invention is not limited to the above embodiments, where the aspect belonging to the idea of ​​the present invention belong to the scope of the present invention. 应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理前提下的若千改进和润饰,应视为本发明的保护范围。 It should be noted that one of ordinary skill in the art, if the one thousand improvements and modifications without departing from the principles of the invention premise, should be regarded as the protection scope of the invention.

Claims (7)

1. 一种改进型水平轴风力机,其特征在于,包括:塔架(1)、机舱(2)、主轮毂(3)、风轮叶片(4)和收拢机构(5);所述机舱(2)安装在塔架(1)的顶端,所述主轮毂(3)安装在机舱(2) 的前端,多个风轮叶片(4)均匀地围绕着主轮毂(3)布置,所述风轮叶片(4)通过收拢机构⑸与主轮毂⑶相连,所述收拢机构⑸使得风轮叶片⑷能够在叶根处旋转并向机舱(2) 靠拢,从而使风轮叶片⑷的展向垂直于风轮旋转平面。 CLAIMS 1. A modified horizontal axis wind turbine, characterized by comprising: a tower (1), a nacelle (2), the main hub (3), the rotor blade (4) and folded means (5); said nacelle (2) mounted on top of a tower (1), said primary hub (3) mounted on the front end of the nacelle (2), a plurality of rotor blades (4) uniformly around the main hub (3) is arranged, said rotor blade (4) by means retracted ⑶ ⑸ connected with the main hub, so that the folded mechanism ⑸ ⑷ rotor blade and the nacelle can be rotated at the blade root (2) close to the blades of the wind turbine ⑷ vertical spanwise the wind wheel rotation plane.
2. 如权利要求1所述的一种改进型水平轴风力机,其特征在于:所述收拢机构(5)包括球形轮毂⑹和旋转连接件(7),所述球形轮毂⑹的一端为主轮毂连接端(8),球形轮毂(6) 的另一端连接旋转连接件(7),所述旋转连接件(7)与风轮叶片(4)固定连接,旋转连接件(7)带动风轮叶片⑷围绕球形轮毂⑹的轴心旋转。 2. An improved horizontal-axis wind turbine according to claim 1, wherein: said folded means (5) comprises a spherical hub and the rotary connection ⑹ (7), the spherical end of the hub main ⑹ the hub connection end (8), the other end of the spherical hub (6) connected to the rotary link (7), said rotary connecting member (7) fixedly connected to the rotor blade (4), the rotary connecting member (7) driven by the wind wheel ⑷ blades rotate around the axis of the ball hub ⑹.
3. 如权利要求2所述的一种改进型水平轴风力机,其特征在于:所述球形轮毂(6)中开设有弧形的滑道槽(9),所述滑道槽⑼的弧度范围为180°;球形轮毂⑹中还设有法兰支撑固定凸台(1〇)、两半式法兰(n)、电机固定台(12)、驱动电机(13)和连接滑块(14),滑道槽(9)、法兰支撑固定凸台(1〇)和两半式法兰(11)同轴设置;所述法兰支撑固定凸台(10)围绕球形轮毂⑹的内壁设置,法兰支撑固定凸台(10)上固定有两半式法兰(11),所述两半式法兰(11)紧贴球形轮毂⑹的内壁设置;所述电机固定台(12)固定在球形轮毂(6)的内壁上, 电机固定台(12)上安装有驱动电机(13),所述驱动电机(13)的输出轴上固定有驱动齿轮(15),所述驱动齿轮(15)与两半式法兰(11)相啮合;所述连接滑块(14)与滑道槽⑼相配合,连接滑块(14)的一端与两半式法兰(11)固定连接,连接滑块(14) 3. An improved horizontal axis wind turbine according to claim 2, wherein: said spherical hub (6) defines a curved slide groove (9), said arc runner slot ⑼ in the range of 180 °; ⑹ spherical hub flange is also provided with a support boss fixing (1〇), flange halves (n-), the motor fixing table (12), a drive motor (13) and connected to the slider (14 ), slide grooves (9), the support flange fixing projection (1〇) and two half-flange (11) coaxially disposed; said flange support fixing projection (10) disposed around the inner wall of spherical hub ⑹ , the support flange fixing projection (10) is fixed on the flange halves (11), said flange halves (11) against the spherical inner wall of the hub ⑹; the motor fixing table (12) is fixed on the inner wall of spherical hub (6), the motor is mounted on the fixing table (12) with a drive motor (13), an output shaft of the drive motor (13) is fixed to a drive gear (15), said drive gear (15 ) and two half-flange (11) engagement; said connecting slide (14) cooperating with the slide groove ⑼, one end connected to the slider (14) and the flange halves (11) fixedly connected to the connection the slider (14) 的另一端伸出滑道槽(9)与旋转连接件(7)固定连接,驱动电机(13)驱动两半式法兰(11)旋转,两半式法兰(11) 带动连接滑块(14)在滑道槽(9)中滑动,从而带动旋转连接件(7)围绕球形轮毂(6)旋转。 And the other end projecting slide rails (9) connected to the rotary member (7) fixedly connected to the drive motor (13) driving two half-flange (11) is rotated, flange halves (11) connected to drive the slider ( 14) the slide groove (9) slides, so as to drive (6) rotation of the rotary connecting member (7) about the spherical hub.
4. 如权利要求3所述的一种改进型水平轴风力机,其特征在于:所述滑道槽(9)、法兰支撑固定凸台(1〇)、两半式法兰(11)和连接滑块(14)的数量均为两个且互为一一对应的关系,电机固定台(12)安装在两个两半式法兰(11)之间,驱动电机(13)采用双输出轴电机,驱动电机(13)的上下两个输出轴分别与两个两半式法兰(11)相配合。 4. An improved horizontal axis wind turbine according to claim 3, wherein: said slide rails (9), the support flange fixing projection (1〇), flange halves (11) and a connection slide (14) are two in number and each other one to one relationship, the motor fixing table (12) mounted between two flange halves (11), a drive motor (13) double the output shaft of the motor, the drive motor (13), respectively upper and lower two output shafts cooperate with two flange halves (11).
5. 如权利要求3所述的一种改进型水平轴风力机,其特征在于:所述球形轮毂(6)中还设有滑道槽盖板(16)和盖板支撑件(17),所述滑道槽盖板(16)呈弧形,滑道槽盖板(16)的两端固定在连接滑块(14)上,用于遮盖滑道槽(9)的空隙,所述盖板支撑件(17)固定在球形轮毂⑹的内壁上,对滑道槽盖板(I6)进行支撑和导向。 5. An improved horizontal axis wind turbine according to claim 3, wherein: said spherical hub (6) is also provided with slide rails cover plate (16) and the cover support element (17), both ends of the cover plate slide groove (16) is curved, the cover plate slide groove (16) is fixed to the connecting slide (14), for covering the slide groove (9) of the gap, the cover plate support (17) on the inner wall of spherical hub ⑹, slide grooves of the cover plate (I6 of) for supporting and guiding.
6. 如权利要求2所述的一种改进型水平轴风力机,其特征在于:所述球形轮毂(6)两侧可拆卸地安装有两个侧导流罩(1S)。 6. An improved horizontal axis wind turbine according to claim 2, wherein: said spherical hub (6) detachably mounted on both sides with two side shroud (1S).
7. —种如权利要求4所述的改进型水平轴风力机的使用方法,其中,风轮叶片(4)数量为三片,其特征在于,包括如下步骤: 步骤一、当风速长期大于额定风速或者收到台风的预警时,水平轴风力机停机,三个风轮叶片(4)中的一个处于垂直于机舱(2)上表面,其他两个分布在机舱(2)两侧; 步骤二、使上叶片变桨角旋转到〇°,其他两个叶片变桨角分别旋转㈤。 7. - The method using the modified horizontal axis wind turbine of the kind as claimed in claim, wherein the rotor blade (4) in an amount of three, characterized by comprising the following steps: Step a, when the wind speed is greater than the nominal long-term when the wind speed or the typhoon warning is received, the horizontal axis wind turbine shutdown, a three wind turbine blades (4) in the nacelle (2) perpendicular to the surface, the other two located in the nacelle (2) on both sides; step two the rotation of the blade pitch angle to square °, the other two rotating blade pitch angle (v), respectively. 和120°,即使顺着旋转方向的第一个叶片变桨角为6〇°,第二个叶片为12〇°; 步骤三、启动驱动电机(I3),通过四个驱动齿轮(I5),带动两个两半式法兰(11)旋转, 三个旋转连接件(7)开始沿着滑道槽(9)旋转,使得风轮叶片(4)向机舱(2)靠拢,当三个风轮叶片⑷都绕着叶根处的球形轮毂⑹旋转90°时,完成风力机抗强风的控制策略; 步骤四、当台风或者强风过后,风力机需要正常运作发电时,反向操作以上步骤,实现风轮叶片⑷重新回到正常运行工况状态。 And 120 °, even if the first blade along a rotational direction of the pitch angle 6〇 °, the second blades 12〇 [deg.]; Step three, start the drive motor (I3), by the four driving gear (I5), drive two flange halves (11) of rotation, connected to three rotating member (7) start (9) is rotated along the chute groove, so that the rotor blade (4) to the nacelle (2) to move closer, when three air blades ⑷ all around the root of the spherical hub ⑹ rotated 90 °, to complete the control strategy of wind turbine anti strong wind; step four, when typhoon or strong wind, the wind turbine needs to normal operation of the power generation, the reverse operation of the above steps, ⑷ achieve rotor blades back to normal operating conditions the state.
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CN101868621A (en) * 2007-12-28 2010-10-20 川崎重工业株式会社 Upwind type wind wheel and method of operating the same
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US20130039767A1 (en) * 2011-08-08 2013-02-14 Oshkosh Corporation Blade assembly for a mobile wind turbine
CN104314761A (en) * 2014-08-25 2015-01-28 丁健威 Blade-foldable wind-power generator
CN105626385A (en) * 2014-11-05 2016-06-01 上海电气风电设备有限公司 Gathered wind turbine generator blade
CN205578182U (en) * 2016-05-05 2016-09-14 东北林业大学 Novel but aerogenerator's beta structure
US20170114774A1 (en) * 2015-10-22 2017-04-27 Gu Co., Ltd. Blade pitch control apparatus for small size wind power generator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101868621A (en) * 2007-12-28 2010-10-20 川崎重工业株式会社 Upwind type wind wheel and method of operating the same
CN102348889A (en) * 2008-08-22 2012-02-08 自然动力概念公司 Folding blade turbine
US20130039767A1 (en) * 2011-08-08 2013-02-14 Oshkosh Corporation Blade assembly for a mobile wind turbine
CN104314761A (en) * 2014-08-25 2015-01-28 丁健威 Blade-foldable wind-power generator
CN105626385A (en) * 2014-11-05 2016-06-01 上海电气风电设备有限公司 Gathered wind turbine generator blade
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