WO2011150756A1 - 下风向变桨距风力发电机 - Google Patents

下风向变桨距风力发电机 Download PDF

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Publication number
WO2011150756A1
WO2011150756A1 PCT/CN2011/074483 CN2011074483W WO2011150756A1 WO 2011150756 A1 WO2011150756 A1 WO 2011150756A1 CN 2011074483 W CN2011074483 W CN 2011074483W WO 2011150756 A1 WO2011150756 A1 WO 2011150756A1
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WIPO (PCT)
Prior art keywords
main shaft
downwind
base
frame
hub
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PCT/CN2011/074483
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English (en)
French (fr)
Inventor
徐学根
俞铠
何国荣
Original Assignee
浙江华鹰风电设备有限公司
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Application filed by 浙江华鹰风电设备有限公司 filed Critical 浙江华鹰风电设备有限公司
Priority to US13/634,873 priority Critical patent/US20130011262A1/en
Priority to EP11789135.8A priority patent/EP2578878A4/en
Publication of WO2011150756A1 publication Critical patent/WO2011150756A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT 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
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/20Rotors
    • F05B2240/21Rotors for wind turbines
    • F05B2240/221Rotors for wind turbines with horizontal axis
    • F05B2240/2213Rotors for wind turbines with horizontal axis and with the rotor downwind from the yaw pivot axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00Geometry
    • F05B2250/30Arrangement of components
    • F05B2250/31Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05B2250/311Arrangement of components according to the direction of their main axis or their axis of rotation the axes being in line
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00Function
    • F05B2260/70Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/79Bearing, support or actuation arrangements therefor
    • 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

Definitions

  • the invention relates to the field of wind power generators, in particular to a downwind wind power generator suitable for small and medium-sized wind turbines.
  • the object of the present invention is to provide a downwind variable pitch wind power generator with simple structure, high efficiency and reliability in order to solve the deficiencies of the above technology.
  • the present invention is directed to a downwind pitch wind turbine, which mainly comprises a hub, a spindle, a motor, a frame and a base.
  • a synchronous disk is arranged in the hub, and the synchronous disk is connected with the blade connecting the slewing bearing through two mutually connected joint bearings, and the reciprocating rod connected with the moving pair is arranged in the main shaft, one end of the reciprocating rod is connected with the synchronous disk, and the other end is connected with the displacement sleeve.
  • the electric push rod is disposed in the frame, the displacement sleeve is connected with the electric push rod, and the electric push rod is electrically connected with the signal slip ring installed inside the base. Allows it to react quickly to achieve pitch and shutdown .
  • the hub is connected to the main shaft through a connecting flange.
  • the main shaft is connected to the main bearing housing and the auxiliary bearing housing through the spherical roller bearing, and is fixed to the frame through the elastic supporting block, and the main shaft is connected to the generator through the elastic coupling.
  • the compact structure makes it run more smoothly and reliably.
  • a slewing bearing is arranged between the frame and the base, and a power transmission slip ring is arranged inside the base.
  • the rack can be 360 relative to the base ° Rotate to adapt to each wind direction.
  • the downwind pitch wind turbine obtained by the invention is mainly suitable for small and medium-sized wind turbines, and the main body structure is simple and compact, safe and reliable, and is provided with elastic support blocks, so that the deflection and vibration brought by the rotation of the wind wheel are not rigidly transmitted to The motor and the frame make it run more smoothly and reliably.
  • the pitch mechanism can control three blades to pitch at the same time, and the amplitude of the pitch is consistent. When in a harsh condition such as a hurricane, the pitch mechanism pitches the blade to a certain negative angle, causing it to stop and remain in a stopped state.
  • the frame can be rotated 360 ° relative to the base to accommodate individual wind directions.
  • an anemometer and controller are set up to make the reaction more sensitive, adapt to the abrupt wind speed and direction, and the effect is better, and the applicable area is more extensive.
  • Figure 1 is a cross-sectional view of the present invention
  • Figure 2 is a front elevational view of an embodiment of the present invention
  • Figure 3 is a side elevational view of an embodiment of the present invention.
  • the downwind pitch wind turbine described in this embodiment mainly comprises a hub 1 , a main shaft 4 , a motor 8 , a frame 10 and a base 12 , and a synchronous disk 15 and a synchronous disk are arranged inside the hub 1 .
  • the two parallel jointed bearing 13 is connected with the blade connecting slewing bearing 17, and the spindle 4 is provided with a reciprocating rod 14 connected by a moving pair, and one end of the reciprocating rod 14 and the synchronizing disc 15 Connected to the other end with a displacement sleeve 5, the electric push rod 18 is disposed in the frame 10, the displacement sleeve 5 is connected to the electric push rod 18, and the electric push rod 18 and the signal slip ring mounted inside the base 12 20 electrical connection.
  • the controller When the anemometer detects that the wind speed is too large, the controller gives an instruction to command the electric push rod 18 to expand and contract, and the electric push rod 18 to pull the displacement sleeve 5 Movement, through the reciprocating rod 14 to drive the synchronizing disc 15 movement, thereby synchronizing the joint bearing on the disc 15 13 traction vane connecting the slewing bearing 17 Rotate to achieve blade pitching.
  • the controller needs to give a signal to start the pitching mechanism to realize the blade pitching.
  • the pitch is to a certain negative angle, the wind gives the fan a reverse force. The fan is stopped, and the force is less than the force required when the fan starts, ensuring that the fan does not run in reverse and is always in a stop state.
  • the downwind pitch wind turbine described in this embodiment has a hub 1 connected to the main shaft 4 via a connecting flange 9, and the main shaft 4 passes through the spherical roller bearing 3 and the main bearing housing 2. It is connected to the auxiliary bearing housing 6 and fixed to the frame 10 through the elastic supporting block 16, and the main shaft 4 is connected to the motor 8 through the elastic coupling 7.
  • a slewing bearing 11 is disposed between the frame 10 and the base 12, and a power transmission slip ring 19 is disposed inside the base 12.
  • Rack 10 can be rotated 360 degrees, electric push rod 18 The control signal and power supply are transmitted by the signal slip ring 20, and the power generated by the generator is transmitted by the power transmission slip ring 19.

Description

下风向变桨距风力发电机 技术领域
本发明涉及风力发电机领域,特别是一种适用于中小型风机的下风向风力发电机。
背景技术
目前,大风机已基本使用了变桨变速调节,显示出功率输出稳定,风机运行更可靠的优势。小风机上由于叶片比较小,叶片在受到风的作用下所产生的力比较小,不能使离心锤发生扭转,从而达不到变桨的作用。所以小风机上风向带尾舵偏航的风力发电机比较多,不但输出不稳定, 而且风机因大风下限速效果差带来的故障问题较多,运行不可靠。
技术问题
本发明的目的是为了解决上述技术的不足而提供一种结构简单,高效可靠的下风向变桨距风力发电机。
技术解决方案
为了达到上述目的,本发明所设计的下风向变桨距风力发电机,它主要包括轮毂、主轴、电机、机架和底座,在 轮毂内设置同步盘,同步盘通过两个相互对接的关节轴承与风叶连接回转轴承连接,主轴内设置有移动副连接的往复杆,往复杆一端与同步盘相连,另一端连接有位移套,电动推杆设置在机架内,位移套与电动推杆连接,电动推杆与安装在底座内部的信号滑环电连接。使其可以迅速做出反应,实现变桨和停机的功效 。
轮毂通过连接法兰与主轴连接,主轴通过调心滚子轴承与主轴承座和辅助轴承座连接,并通过弹性支撑块固定在机架上,主轴通过弹性联轴器与发电机相连。结构紧凑,使其运行更加平稳可靠。
在机架与底座之间设置回转支撑轴承,在底座内部设置输电滑环。机架相对于底座可以 360 °旋转,适应各个风向。
有益效果
本发明所得到的下风向变桨距风力发电机,主要适合中小型风机,主体结构简单紧凑,安全可靠,其设置有弹性支撑块,使风轮转动带来的偏转及振动不会刚性传递到电机和机架上,使其运行更加平稳可靠。其变桨机构可以控制三个叶片同时变桨,并变桨的幅度保持一致。当在飓风等恶劣条件下,变桨机构使叶片变桨至一定负角度,使其停机,并保持停机状态。 机架相对于底座可以 360 °旋转,适应各个风向。另外还 设置有风速仪和控制器,反应更加灵敏,能适应突变的风速和风向,效果更好,适用地域更加广泛。
附图说明
图1是本发明的剖视图;
图2是本发明实施例的正视图;
图3是本发明实施例的侧视图。
1 、轮毂, 2 、主轴轴承座, 3 、调心滚子轴承, 4 、主轴, 5 、位移套, 6 、辅助轴承座, 7 、弹性联轴器, 8 、电机 , 9 、连接法兰, 10 、机架, 11 、回转支撑轴承, 12 、底座, 13 、关节轴承, 14 、往复杆, 15 、同步盘, 16 、弹性支撑块, 17 、风叶连接回转轴承, 18 、电动推杆、 19 、输电滑环、 20 信号滑环。
本发明的最佳实施方式
下面通过实施例结合附图对本发明作进一步的描述。
实施例1:
如图1所示,本实施例描述的下风向变桨距风力发电机,它主要包括轮毂1、主轴4、电机8、机架10和底座12,在 轮毂 1 内部设置同步盘 15 ,同步盘 15 通过两个对接的关节轴承 13 与风叶连接回转轴承 17 连接,主轴 4 内设置有移动副连接的往复杆 14 ,往复杆 14 一端与同步盘 15 相连,另一端连接有位移套 5 ,电动推杆 18 设置在机架 10 内,位移套 5 与电动推杆 18 连接,电动推杆 18 与安装在底座 12 内部的信号滑环 20 电连接。
当风速仪监测到风速过大时,控制器给出指令,命令电动推杆 18 伸缩,电动推杆 18 牵引位移套 5 运动,通过往复杆 14 带动同步盘 15 运动,从而同步盘 15 上的关节轴承 13 牵引风叶连接回转轴承 17 旋转,实现风叶变桨。当检测到飓风时或检测到风机的异常情况需要停机时,控制器给出信号启动变桨机构工作,实现风叶变桨,当变桨至一定负角度时,风力给风机一个反向的力使风机停止,而且该力还小于风机启动时所需的力,保证风机不会反向运行,始终处于停机状态。
本发明的实施方式
实施例2:
如图2,图3所示,本实施例描述的下风向变桨距风力发电机,其轮毂1通过连接法兰9与主轴4连接,主轴4通过调心滚子轴承3与主轴承座2和辅助轴承座6连接,并通过弹性支撑块16固定在机架10上,主轴4通过弹性联轴器7与电机8相连, 在机架 10 与底座 12 之间设置回转支撑轴承 11 ,在底座 12 内部设置输电滑环 19 。机架 10 可以 360 度旋转,电动推杆 18 的控制信号及电源依靠信号滑环 20 传输,发电机发出的电依靠输电滑环 19 输送出去。

Claims (3)

  1. 一种下风向变桨距风力发电机,它主要包括轮毂、主轴、发电机、机架和底座,其特征是在轮毂内设有同步盘,同步盘通过两个相互对接的关节轴承与风叶连接回转轴承连接,主轴内设置有移动副连接的往复杆,往复杆一端与同步盘相连,另一端连接有位移套,电动推杆设置在机架内,位移套与电动推杆连接,电动推杆与安装在底座内部的信号滑环电连接。
  2. 根据权利要求1所述的下风向变桨距风力发电机,其特征是所述的轮毂通过连接法兰与主轴连接,主轴通过调心滚子轴承与主轴承座和辅助轴承座连接,并通过弹性支撑块固定在机架上,主轴通过弹性联轴器与发电机相连。
  3. 根据权利要求1或2所述的下风向变桨距风力发电机,其特征是所述的在机架与底座之间设置回转支撑轴承,在底座内部设置输电滑环。
PCT/CN2011/074483 2010-06-04 2011-05-22 下风向变桨距风力发电机 WO2011150756A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/634,873 US20130011262A1 (en) 2010-06-04 2011-05-22 Downwind Variable Pitch Wind Turbine Generator
EP11789135.8A EP2578878A4 (en) 2010-06-04 2011-05-22 WINDMILL WITH VARIABLE STEP UNDER WIND

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CN201010191997.5 2010-06-04
CN2010101919975A CN101852173B (zh) 2010-06-04 2010-06-04 下风向变桨距风力发电机

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EP (1) EP2578878A4 (zh)
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EP2578878A1 (en) 2013-04-10

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