CN102322394A - Fan paddle-changing system - Google Patents

Fan paddle-changing system Download PDF

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Publication number
CN102322394A
CN102322394A CN201110293212A CN201110293212A CN102322394A CN 102322394 A CN102322394 A CN 102322394A CN 201110293212 A CN201110293212 A CN 201110293212A CN 201110293212 A CN201110293212 A CN 201110293212A CN 102322394 A CN102322394 A CN 102322394A
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China
Prior art keywords
pitch
paddle
drive
changing
fan
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CN201110293212A
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Chinese (zh)
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刘桦
王为民
王建录
莫尔兵
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东方电气集团东方汽轮机有限公司
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Priority to CN201110293212A priority Critical patent/CN102322394A/en
Publication of CN102322394A publication Critical patent/CN102322394A/en

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    • 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 provides a fan paddle-changing system which is a concentrating paddle-changing system, and the fan paddle-changing system comprises a paddle-changing driving device, a synchronized driving device and a paddle-changing bearing, wherein the paddle-changing bearing is arranged on the hub surface of a fan, and the outer ring of the paddle-changing bearing is correspondingly provided with a blade; one end of the synchronized driving device is connected with the output shaft of the paddle-changing driving device, the other end of the synchronized driving device is provided with a plurality of synchronized rotating shafts arranged corresponding to the inner ring of the paddle-changing bearing; and the output shafts of the paddle-changing driving device and a fan gear case are provided with normally open clutches, when the paddle-changing driving device loses efficacy, each clutch is closed. Compared with the high-power wind generating set, the paddle-changing system provided by the invention has good applicability, can perform the blade paddle-changing movement under a fan normal operating condition, and also can enable the blade to reliably return to a feathering position when the fan has a fault, thereby guaranteeing the safe operation of the fan.

Description

一种风机变桨系统 A fan on the pitch system

技术领域 FIELD

[0001] 本发明涉及风力发电技术,具体是一种具有失效安全保护功能的风机变桨系统。 [0001] The present invention relates to a wind power generation technology, in particular a fail-safe function of the pitch turbine system. 背景技术 Background technique

[0002] 目前,风力发电机组最常见的控制方式有定速定桨、定速变桨、变速定桨和变速变桨等四种控制方式,不同的控制方式之间的区别主要体现在对叶片桨距角和电机转速控制的不同方式。 [0002] Currently, the most common wind turbine with a constant speed control mode fixed pitch, the pitch constant speed, the shift gear fixed pitch propeller and other four control modes, the difference between the different control methods mainly in the blade pitch angle and motor speed control in different ways. 其中变速变桨控制方式由于具有最优风能捕获、恒功率输出、可以减轻风机载荷等优点,获得广泛的应用,成为现代大功率风力发电机组主流的控制方式。 Wherein the shift pitch control mode because of the optimal capture of wind energy, constant power output can be advantageously reduced fan loads, etc., widely applied, mainstream modern wind turbines power control. 其基本工作原理是使风机在额定风速以下,控制风轮的转速,实现风机对风能的最大功率捕获;在额定风速以上,控制叶片的变桨角,实现对输出功率的控制,达到恒功率输出的目的;同时在某些故障情况下,保证叶片迅速顺桨,实现气动刹车的功能。 The basic operating principle is that the fan is below rated wind speed, controlling the rotational speed of the rotor, to achieve air blower maximum power of wind energy captured; in above rated wind speed, controlling the pitch angle of the blades, to achieve control of the output power to achieve constant power output purpose; while in some cases a failure to ensure rapid blade feathering, to achieve pneumatic braking function.

[0003] 如图1、图2所示,在现代风机中,每个叶片4都要有相对独立却又协同配合的变桨系统,变桨系统包括:变桨轴承5、变桨连接盘3、变桨驱动装置和控制装置构成。 [0003] As shown in FIG 1, FIG. 2, in the modern fan, each blade 4 but must have relatively independent synergy pitch system, pitch system comprising: a pitch bearing 5, the pitch lands 3 , pitch drive means and control means configured. 每个叶片4的根部通过变桨轴承5与轮毂相连,变桨轴承5直接连接每一个叶片4的变桨驱动装置的输出端,或者并联起来连接一个主变桨驱动装置。 The root of each blade by a pitch bearing 4 and the hub 5 is connected to the pitch bearing 5 is directly connected to the output terminal of each blade pitch drive device 4, or in parallel connection together a main pitch drive. 通过风机主控系统发出变桨信号,使得上述装置传递执行动作,使得叶片4的变桨角改变,完成变桨的动作。 Signals sent through the fan pitch main control system, so that said transfer means to perform an action, such that the blade pitch angle is changed to 4, the pitch of the completion of the operation. 变桨系统的效率和可靠性直接与风机的性能和安全相关,是风机的一个重要组成部件。 Efficiency and reliability of the pitch system is directly related to the performance and safety of the wind turbine, it is an important component parts of the fan. 目前,风机变桨系统根据所采用的动力来源的不同,可以分为液压变桨和电气变桨两类,两者各有优缺点。 Currently, wind turbine pitch system according to the different sources of power used, can be divided into hydraulic and electric pitch pitch types, both have their advantages and disadvantages. 但近年来,随着电气变桨在变桨效率、动作响应速度和可靠性等方面的优势不断体现,大多数风机采用的都是电气变桨系统。 But in recent years, with advantages in terms of pitch efficiency, response speed and operation reliability of the electrical pitch continues to reflect, fans are used in most electrical pitch system.

[0004] 液压变桨系统在正常工作时,其工作动力来自液压泵,其基本结构如图1所示:通过一个液压变桨驱动装置和控制装置驱动,再通过特殊设计的变桨连接盘3,将所有叶片4 的上设置的变桨轴承5连接在一起,如此将协同完成每一个叶片4的变桨动作。 [0004] The hydraulic pitch system during normal operation, the operating power from the hydraulic pump, the basic structure shown in Figure 1: a hydraulic pressure by driving means and control means pitch drive, the pitch and then connecting the disk 3 through a specially designed , connecting together the pitch bearing 5 provided on all of the blades 4, thus completed the synergistic action of each blade pitch 4. 液压变桨驱动装置是液压缸9及其活塞杆7,控制装置是液压泵,活塞杆7末端通过变桨连接盘3连接各变桨轴承5,变桨连接盘3将活塞杆7的直线运动转换为变桨轴承5的回转运动。 Hydraulic pitch drive means is a hydraulic cylinder 9 and a piston rod 7, the control means is a hydraulic pump, a piston rod 7 connected to each end of the pitch bearing 5 by the pitch connecting plate 3, the pitch of the piston rod connected to the linear motion disc 3 7 is converted to rotary motion pitch bearing 5. 因此,在液压变桨系统工作时,液压泵接收控制装置的信号,即主控调节液压变桨系统的比例电磁阀,驱动活塞杆7在液压缸9内作轴向运动,拉动轮毂内的变桨连接盘3,使得变桨连接盘3带动变桨轴承5转动,从而改变叶片4的变桨角,使其作变桨运动。 Thus, when the hydraulic pitch system operation, the hydraulic pump control means receiving a signal, i.e., adjusting a hydraulic pitch main control systems with proportional solenoid valve, axial movement of the drive rod 7 in the cylinder 9, becomes pulled in the hub 3 paddle lands, the lands 3 so that the pitch drive rotates pitch bearing 5, thereby changing the pitch angle of the blade 4, so that as the pitch movement. 液压变桨工作结构简单,元器件寿命较长,只需要油压就能工作;但是,在实际应用中,液压变桨系统存在着漏油、动作响应慢、工作温度范围有限等问题;另外,液压油、过滤器需定期检测、更换,液压油易泄漏、容易造成污染,液压泵动作频繁耗能大、噪音大。 Simple hydraulic pitch working configuration, component a long life, be able to work only hydraulic pressure; however, in practice, the hydraulic pitch system there is leakage, the operation of slow response, limited temperature range and other problems; in addition, hydraulic oil, filters need regular testing, replace, easy to leakage of hydraulic oil, likely to cause pollution, energy consumption and frequent pump action, and noise.

[0005] 电气变桨系统在正常工作时,其工作动力来自电网供电,其基本结构如图2所示: 每一个叶片4通过一套变桨电机及变桨齿轮箱11驱动,其电池柜和控制柜10都直接设置在轮毂内部,电池柜内设置有备用电池,变桨齿轮箱输出端通过变桨小齿轮连接变桨轴承5 的内齿圈,控制柜通过滑环12与主控通信。 [0005] The electric pitch system during normal operation, the operating power from the power grid, the basic structure shown in Figure 2: 4 by a drive motor and a pitch of pitch gearbox each blade 11, and its battery cabinet the control cabinet 10 are disposed directly inside the hub, the battery cabinet is provided with a battery backup, a pitch gear box by an output terminal connected to the pitch of the pinion gear within the pitch bearing 5, the control cabinet through a slip ring 12 communicate with the master. 因此,在电气变桨系统正常工作时,控制柜接受变桨控制信号、向变桨电机及变桨齿轮箱11发出变桨执行信号,变桨电机工作,输出轴通过变桨齿轮箱连接变桨小齿轮,带动变桨轴承5旋转,从而改变叶片4的变桨角,使其作变桨运动。 Accordingly, when the electric pitch system is working properly, the control cabinet to accept the pitch control signal issued pitch execution signal to the pitch drive motor and pitch gearbox 11, the pitch motor, the output shaft via a pitch gear box is connected pitch a pinion driven by the rotation of the pitch bearing 5, thereby changing the pitch angle of the blade 4, so that as the pitch movement. 当电网失效时,电气变桨系统从备用电池中获取动力,使叶片4处于顺桨位置,以保证风机安全。 When the grid fails, the electrical pitch system obtains power from the backup battery, the blades 4 are in the feathered position, to ensure safe fan. 电气变桨系统的电动变桨技术成熟,数控驱动容易,控制简单;但是,其结构复杂,元器件寿命较短,需要经常检修和更换;必须依赖电网、电池等电气资源;变桨轴承5 的内齿圈容易局部磨损,将电池柜和控制柜10设置在轮毂内,每一片叶片4对应一套驱动装置,使其内部可维护的空间很小,成本高昂。 Electric electrical pitch system pitch technology is mature, easy to drive NC, control is simple; however, complicated structure, short component life, require frequent maintenance and replacement; must rely on power, battery and other electrical resources; pitch bearing 5 the inner ring is easy to local wear, the inside of the hub, each blade 4 corresponding to a set of drive means and control cabinets of the battery 10 is provided, so that the internal space can be maintained very costly. 如果断电后,备用电池柜失效,变桨系统失电、使其失效,无法使叶片4顺桨,情况严重时甚至会造成风机破坏。 If the power failure, the backup battery fails cabinet, pitch system power failure, it can be disabled, the blades 4 can not be feathered, serious cases even cause the fan damage.

[0006] 从原理和结构上,无论液压变桨系统或电气变桨系统都能完成风机正常运行和故障时所需的叶片变桨动作要求,但其可靠性还存在一些问题。 Required for [0006] from the principle and structure, whether hydraulic or electrical pitch system pitch system can be completed and normal operation of the wind turbine blade pitch fault operation request, but there are still some problems reliability.

发明内容 SUMMARY

[0007] 本发明的目的在于:提供一种安全可靠的风机变桨系统。 Objective [0007] The present invention is: to provide a safe and reliable turbine pitch system.

[0008] 本发明所采用的技术方案是 [0008] The technical proposal of the present invention

一种风机变桨系统,是集中变桨系统,包括变桨驱动装置、同步传动装置和变桨轴承, 所述变桨轴承设置在风机的轮毂表面、其外圈上对应安装叶片,同步传动装置一端连接变桨驱动装置的输出轴,另一端设置有若干根同步回转轴、对应变桨轴承的内圈设置;所述变桨驱动装置的输出轴与风机齿轮箱的输出轴上设置有一个常开的离合器,当变桨驱动装置失效时,该离合器闭合。 Pitch on a fan system, a centralized system pitch, a pitch comprising a drive means, and synchronous drive pitch bearing, said pitch hub bearing surface of the fan is provided, which corresponds to the outer blade mounting, synchronous drive means connected to one end of the pitch drive output shaft, and the other end is provided with a plurality of root synchronization rotary axis, the inner ring of the pitch bearing is provided on the strain; output shaft is provided with a constant output shaft of the pitch drive means and the wind turbine gearboxes open clutch, when the pitch drives fails, the clutch is closed.

[0009] 所述同步传动装置是齿轮传动装置,包括相互啮合的主动齿轮和若干个从动齿轮,主动齿轮与变桨驱动装置的输出轴同步旋转,从动齿轮与变桨轴承同步旋转。 The [0009] synchronous drive means is a gear transmission comprising a driving gear and a plurality of driven gears meshing with each other, the output shaft drive gear pitch drive means synchronously rotated, the driven gear rotates in synchronization with the pitch bearing.

[0010] 所述变桨驱动装置的输出轴末端连接一个主动锥齿轮,且该输出轴垂直于该主动轴齿轮的端面固定连接,主动锥齿轮上啮合有若干个从动锥齿轮,且这些从动锥齿轮的端面对应变桨轴承的端面固定连接。 [0010] The pitch output shaft connected to a drive means of the end bevel gear, and the output shaft is perpendicular to the end face of the gear drive shaft is fixedly connected with a plurality of engaging the driven bevel gear on the driving bevel gear, and from these movable bevel gear side facing the end face bearing the strain paddle is fixedly connected.

[0011] 所述同步传动装置包括丝杆、变桨驱动杆和变桨连接盘,丝杆连接变桨驱动装置的输出轴和变桨驱动杆,变桨驱动杆末端垂直于该变桨连接盘设置,该变桨连接盘铰接变桨轴承。 [0011] The synchronous drive means comprises a lead screw, the pitch and the pitch drive rod connecting plate, screw pitch drive means connected to the output shaft and the pitch drive shaft, the pitch drive rod end of the vertical plate connected to the pitch setting the pitch hinge connecting pitch bearing plate.

[0012] 所述变桨驱动装置是变桨电机。 [0012] The pitch drive motor means is a variable pitch.

[0013] 所述离合器上设置有对应叶片变桨角的限位开关。 [0013] The clutch is provided with a corresponding blade pitch angle variation limit switch.

[0014] 本发明所产生的有益效果是: [0014] Advantageous effects of the present invention is produced by:

本发明针对液压变桨系统和电气变桨系统在风机故障时,存在无法使叶片可靠顺桨的问题,提出了一种风机变桨系统。 The present invention is directed to a hydraulic pitch system and electrical pitch system fan failure when there is not a reliable blade feathering problem, proposes a wind turbine pitch system. 该风机变桨系统,对于大功率风力发电机组具有良好的适用性,可以应用于多种功率等级的风力发电机组,在满足正常变桨要求的情况下,可以有效地提高风力发电机组在失效情况下的安全性。 The pitch turbine system for high-power wind turbine having good applicability, can be used in a variety of wind turbine power levels, in the case where the pitch to meet the normal requirements, can be effectively improved in the case of failure of the wind turbine security under. 它不但可以完成风机正常工作状态下的叶片变桨动作,还能在风机故障时,可靠地使叶片回到顺桨位置,保证风机的安全运行。 It can not only complete the blade pitch action under normal operation of the fan, but also a failure in the fan reliably return to the feathered position the blades to ensure the safe operation of the fan.

[0015] 本发明的两种具体结构形式,相较于液压变桨系统和电气变桨系统具有以下的优势: [0015] Two specific structure of the present invention, compared to the pitch of the hydraulic system and electrical pitch system has the following advantages:

1.变桨系统在风机故障时的后备动力直接来源于风机传动链本身,形成了动力回路, 无需额外的后备动力,提高了变桨系统在风机故障情况下的可靠性; 1. pitch system directly from the backup power blower fan failure when the chain itself, a power circuit is formed, without additional backup power, to improve the system reliability pitch fan in the case of a fault;

2.属于机电传动,效率高,不存在液压漏油问题;3.适用于具有集中变桨控制系统的变速变桨风力发电机组中的变桨执行机构。 2. Electrical Transmission belongs, high efficiency, hydraulic leakage is not a problem; 3 applicable to a pitch shift actuator pitch in wind turbine pitch control system is centralized. 附图说明 BRIEF DESCRIPTION

[0016] 图1是现有技术风机的液压变桨系统的结构示意图; 图2是现有技术风机的电气变桨系统的结构示意图; [0016] FIG. 1 is a schematic structural diagram of a hydraulic turbine prior art pitch system; FIG. 2 is a schematic structural diagram of the prior art wind turbine electrical pitch system;

图3是本发明的变桨系统的第一种结构示意图; 图4是本发明的变桨系统的第二种结构示意图。 FIG 3 is a schematic view of a first configuration of the pitch system of the present invention; FIG. 4 is a schematic view of a second configuration of the pitch system of the present invention.

[0017] 图中标号表示:1-联轴器、2-齿轮箱输出轴、3-变桨连接盘、4-叶片、5-变桨轴承、6-主轴、7-活塞杆、8-齿轮箱、9-液压缸、10-电池柜和电控柜、11-变桨电机和齿轮箱、 12-滑环、13-锥齿轮、14-变桨驱动轴、15-离合器、16-变桨电机、17-变桨驱动杆、18-丝杆。 [0017] FIG numerals: 1- couplings, gearbox output shaft 2-, 3- pitch lands, blade 4-, 5- pitch bearing, spindle 6-, 7- rod, 8 gear box, 9 the hydraulic cylinder 10 and the battery cabinets cabinet, 11- pitch motor and gearbox, 12 slip ring, 13 a bevel gear 14- pitch shaft, the clutch 15, 16 pitch motor, 17-pitch drive rod 18 screw.

具体实施方式 Detailed ways

[0018] 如图3、图4所示,本发明是一种风机变桨系统,是集中变桨系统,包括变桨驱动装置、同步传动装置和变桨轴承5。 [0018] FIG. 3, FIG. 4, the present invention is a wind turbine pitch system, centralized pitch system includes a pitch driving device, synchronous drive means 5 and a pitch bearing. 本具体实施方式中,变桨驱动装是变桨电机16,变桨轴承5设置在风机的轮毂表面、其外圈上对应安装叶片4,同步传动装置一端连接变桨电机16的输出轴,另一端设置有若干根同步回转轴、对应变桨轴承5的内圈设置。 The present embodiment, pitch drive means is a pitch drive motor 16, the hub surface of the fan, corresponding mounting the blades 4, synchronous drive end connected pitch output shaft of the motor 16 on the outer ring of the pitch bearing 5 is provided, the other One end is provided with a plurality of root synchronization rotary shaft, the bearing inner ring strain paddle 5 is provided. 该变桨电机16的输出轴与齿轮箱输出轴2上设置有一个常开的离合器15,当变桨电机16失效时,该离合器15闭合。 2 is provided on the output shaft and the gearbox output shaft of the pitch motor 16 has a normally open clutch 15, when the pitch motor 16 fails, the clutch 15 is closed.

[0019] 同步传动装置具有两种具体的结构性形式: [0019] synchronous drive having two specific structural forms:

如图3所示,第一种结构形式的同步传动装置是齿轮传动装置,包括相互啮合的主动齿轮和若干个从动齿轮,主动齿轮与变桨驱动装置的输出轴同步旋转,从动齿轮与变桨轴承5同步旋转。 As shown, the structure of a first synchronous transmission is a gear transmission 3, comprising a driving gear meshing with each other and a plurality of driven gears, an output shaft drive gear pitch drive means is rotated in synchronization with the driven gear The pitch bearing 5 synchronously rotated. 本具体实施方式中:变桨电机16的输出轴通过联轴器1连接一根变桨驱动轴14,该变桨驱动轴14贯穿齿轮箱8的两端。 The present embodiment: the pitch of the output shaft of the motor 16 via a coupling connecting a drive shaft 14 pitch, the pitch at both ends of the drive shaft 8 through gear box 14. 变桨驱动轴14的末端连接有与其同步转动的锥齿轮13,该锥齿轮13垂直于变桨驱动轴14设置、套接在变桨驱动轴14周面上。 The pitch of the drive shaft 14 is connected to the end of the bevel gear 13 rotates in synchronization therewith, the bevel gear 13 perpendicular to the pitch of the drive shaft 14 is provided, the pitch of the drive shaft 14 is sleeved peripheral surface. 这个主动转动的锥齿轮13上啮合有若干个从动转动的锥齿轮13,且这些从动锥齿轮13的端面对应变桨轴承5的端面固定连接,使得两者同步旋转。 Active engagement of the bevel gear 13 rotatable with a plurality of driven rotation of the bevel gear 13, driven bevel gear and the end faces 13 of the end face of the strain pitch bearing 5 is fixedly connected, such that both rotate in synchronization.

[0020] 值得注意的是:在变桨驱动轴14与齿轮箱输出轴2之间设置有一个常开的离合器15,当变桨电机16失效时,该离合器15闭合、由齿轮箱输出轴2驱动风机变桨系统。 [0020] It is noted that: a pitch drive shaft 14 at 15, when the pitch motor 16 fails, the clutch 15 is provided with a normally closed open clutch between the gearbox output shaft 2, the output shaft from the gear box 2 pitch fan drive system. 而且, 离合器15上设置有对应叶片4变桨角的限位开关。 Further, the limit switch 4 is provided with a corresponding blade pitch angle of the clutch 15.

[0021] 这种具体结构的风机变桨系统的工作方式为: [0021] pitch turbine system works this particular structure is:

当风机正常运行时,离合器15断开,风机变桨系统由变桨电机16带动变桨驱动轴14, 驱动齿轮传动装置旋转,带动变桨轴承5转动,实现叶片4的变桨。 When the fan during normal operation, clutch 15 is turned off, the fan pitch system motor 16 driven by a variable pitch propeller shaft 14, rotation of the gear drive transmission, driven by the rotation of the pitch bearing 5, 4 of the blade pitch to achieve.

[0022] 当风机出现故障时,如电网掉电,或变桨电机16出现故障等情况,叶片4不能顺利顺桨时,离合器15闭合,使得齿轮箱输出轴2的动力分流到变桨驱动轴14,从而依次带动传动系统和变桨轴承5,实现顺桨的动作。 [0022] When the fan fails, such as power down, or pitch drive motor 16 failure, etc., the blades 4 can not be smoothly feathered, clutch 15 is closed, so that the power of the gearbox output shaft 2 to pitch split drive shaft 14, which in turn drives the transmission system and the pitch bearing 5, realized feathering operation. 为了避免顺桨动作超过允许的变桨角,在离合器15中,设计有对应的限位开关,当达到顺桨位置后,离合器15可以自动断开,切断齿轮箱输出轴2到变桨驱动轴14的动力。 In order to avoid exceeding the allowable operation feathered pitch angle, in the clutch 15, the design of the corresponding limit switch, when reaching the feathered position, clutch 15 may be automatically turned off, cutting off the gearbox output shaft 2 to the pitch of the drive shaft power 14.

[0023] 该变桨系统的关键在于离合器15,它为风机故障提供了一种失效保护机制,即只要风轮还在旋转,就能保证风机能可靠顺桨;而当风轮停止旋转时,可以将风机视为处于安全状态。 [0023] The key to this system is that the pitch clutch 15, which provides a failsafe mechanism for fan failure, i.e., as long as the rotor is still rotating can reliably ensure feathered fan; and when the rotor stops rotating, fans can be considered to be in a safe state. 此外,失效保护离合器15的动作与高速轴的机械刹车动作无相互冲突,可以一起工作。 Further, the fail-safe operation of the clutch 15 to the mechanical operation of the high speed shaft brakes without conflicting, can work together.

[0024] 如图4所示,第二种结构形式的同步传动装置包括丝杆18、变桨驱动杆17和变桨连接盘3。 [0024] As shown, the structure includes a second synchronous drive screw 18, the pitch and the pitch drive rod 17 connected to plate 43. 丝杆18连接变桨电机16的输出轴和变桨驱动杆17,将变桨电机16的输出轴的回转运动转化为变桨驱动杆17的轴向直线运动。 Pitch screw 18 is connected to the output shaft of the motor 16 and the pitch drive lever 17, the pitch of the output shaft 16 of the motor rotary motion into linear axial motion of the drive rod 17 of the pitch. 变桨驱动杆17末端垂直于该变桨连接盘3设置,该变桨连接盘3铰接变桨轴承5。 Pitch drive end of the vertical rod 17 is connected to the pitch setting plate 3, the connecting plate 3 hinged pitch the pitch bearing 5. 本具体实施方式中,同步传动装置的结构与液压变桨系统十分类似,其中:从运动状态上来说,变桨驱动杆17相当于活塞杆7,只不过变桨驱动杆17是通过丝杆18连接变桨电机16驱动、活塞杆7是有液压泵驱动;轮毂内的变桨连接盘3的结构与连接方式更是与液压变桨系统一模一样,这里就不再繁述。 The present embodiment, the structure of the hydraulic pitch system of the synchronous drive apparatus is very similar, wherein: the movement from the state, the pitch drive shaft 17 corresponds to the piston rod 7, but the pitch drive rod 17 by screw 18 pitch drive motor 16 is connected, the piston rod 7 is driven hydraulic pump; a pitch within a hub connected to the disk structure of embodiment 3 is connected to the hydraulic system of identical pitch, said fan is omitted here.

[0025] 值得注意的是:在变桨驱动杆17与齿轮箱输出轴2之间设置有一个常开的离合器15,当变桨电机16失效时,该离合器15闭合、由齿轮箱输出轴2驱动风机变桨系统。 [0025] It is noted that: the pitch drive shaft and the gearbox output shaft 17 is provided with a clutch 15 between the normally open 2, when the pitch motor 16 fails, the clutch 15 is closed, the output shaft from the gear box 2 pitch fan drive system. 而且, 离合器15上设置有对应叶片4变桨角的限位开关。 Further, the limit switch 4 is provided with a corresponding blade pitch angle of the clutch 15.

[0026] 这种具体结构的风机变桨系统的工作方式为: [0026] pitch turbine system works this particular structure is:

在正常工作状态,变桨电机16带动丝杆18转动,拉动变桨驱动杆17前后运动,使叶片4进行变桨动作,此时丝杆18与齿轮箱输出轴2脱开,齿轮箱8输出动力不带动变桨驱动杆17的运动。 In normal operation, the pitch motor 16 rotates drive screw 18, pulling the rod pitch drive 17 back and forth motion, pitching the blades 4 operation, when screw 18 is disengaged from the gearbox output shaft 2, the output of the gear box 8 power is not driven pitch movement of the drive rod 17.

[0027] 当出现电网掉电,或变桨电机16出现故障等情况,齿轮箱输出轴2带动丝杆18转动,带动变桨驱动杆17前后运动,保证叶片4的顺桨动作,此时变桨电机16无动力输出,处于空转状态。 [0027] When the grid power failure, or failure of the pitch motor 16 and the like occurs, the gearbox output shaft 2 rotates drive screw 18 to drive the pitch back and forth movement of the drive rod 17, to ensure the operation of feathering blade 4 at this time becomes no power output pitch drive motor 16, an idling state.

[0028] 该变桨系统同样提供了一种失效保护机制,且由于不采用锥齿轮传动副,使整个变桨系统结构得到简化,提高了可靠性。 [0028] The pitch system is also provided a protection mechanism fails, and is not used since the bevel gear pair, the pitch system so that the whole structure is simplified, reliability is improved.

Claims (6)

1. 一种风机变桨系统,是集中变桨系统,包括变桨驱动装置、同步传动装置和变桨轴承,所述变桨轴承设置在风机的轮毂表面、其外圈上对应安装叶片,同步传动装置一端连接变桨驱动装置的输出轴,另一端设置有若干根同步回转轴、对应变桨轴承的内圈设置;其特征在于:所述变桨驱动装置的输出轴与风机齿轮箱的输出轴上设置有一个常开的离合器, 当变桨驱动装置失效时,该离合器闭合。 A wind turbine pitch system, centralized pitch system comprises a pitch drive means, and synchronous drive pitch bearing, said pitch hub bearing surface of the fan is provided, which corresponds to the outer blade mounting synchronization One end of the transmission means connected to the pitch drive output shaft, and the other end is provided with a plurality of root synchronization rotary axis, is provided on the inner pitch bearing strain; characterized in that: said pitch drive means the output shaft and the wind turbine gearboxes the shaft is provided with a normally open clutches, when the pitch drives fails, the clutch is closed.
2.根据权利要求1所述的风机变桨系统,其特征在于:所述同步传动装置是齿轮传动装置,包括相互啮合的主动齿轮和若干个从动齿轮,主动齿轮与变桨驱动装置的输出轴同步旋转,从动齿轮与变桨轴承同步旋转。 The output of the synchronous drive means is a gear transmission comprising a driving gear meshing with each other and a plurality of driven gears, drive gear pitch drive device: The wind turbine pitch system according to claim 1, characterized in that synchronous rotation of the shaft, the driven gear rotates in synchronization with the pitch bearing.
3.根据权利要求2所述的风机变桨系统,其特征在于:所述变桨驱动装置的输出轴末端连接一个主动锥齿轮,且该输出轴垂直于该主动轴齿轮的端面固定连接,主动锥齿轮上啮合有若干个从动锥齿轮,且这些从动锥齿轮的端面对应变桨轴承的端面固定连接。 The wind turbine pitch system according to claim 2, wherein: the output shaft of said pitch drive means connected to one end of the driving bevel gear, and the output shaft is perpendicular to the end face of the gear drive shaft is fixedly connected, active bevel gear meshing with a plurality of driven bevel gear, driven bevel gear and the end face of the end face is fixedly connected to the strain of the pitch bearing.
4.根据权利要求1所述的风机变桨系统,其特征在于:所述同步传动装置包括丝杆、变桨驱动杆和变桨连接盘,丝杆连接变桨驱动装置的输出轴和变桨驱动杆,变桨驱动杆末端垂直于该变桨连接盘设置,该变桨连接盘铰接变桨轴承。 The wind turbine pitch system according to claim 1, wherein: said synchronizing means comprises a transmission screw, the pitch and the pitch drive rod connecting plate, an output shaft connected to the screw pitch and the pitch drive device the drive lever, the pitch drive rod end of the vertical plate connected to the pitch setting, the pitch disk hingedly connected to the pitch bearing.
5.根据权利要求1所述的风机变桨系统,其特征在于:所述变桨驱动装置是变桨电机。 The wind turbine pitch system according to claim 1, wherein: said pitch drive motor means is a variable pitch.
6.根据权利要求1所述的风机变桨系统,其特征在于:所述离合器上设置有对应叶片变桨角的限位开关。 The wind turbine pitch system according to claim 1, wherein: the clutch is provided with a corresponding blade pitch angle of the limit switch.
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CN102536653A (en) * 2012-01-19 2012-07-04 沈阳工业大学自控技术研究所 Variable pitch system belonging to independent variable pitch wind generating set and having protection function
CN102562452A (en) * 2012-01-19 2012-07-11 沈阳工业大学自控技术研究所 Pitch-varying system for synchronous variable-pitch wind generating set with protection function
CN103184974A (en) * 2013-03-29 2013-07-03 北京天诚同创电气有限公司 Power-frequency feathering variable-pitch system for inertial energy storage
CN105190026A (en) * 2013-03-11 2015-12-23 伊林工程服务公司 Wind turbine control system
CN107061145A (en) * 2017-06-05 2017-08-18 哈尔滨工程大学 Sea wave energy and wind energy collection device
CN107905947A (en) * 2017-11-02 2018-04-13 江苏燕山光伏设备有限公司 Solar energy and wind power comprehensive power generation device

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CN101440778A (en) * 2007-11-22 2009-05-27 磊 邹 Flexible paddle changing mechanism of self-energy generating type wind power generator
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JP2005009373A (en) * 2003-06-18 2005-01-13 Ts Corporation Pitch angle control device for windmill blade
CN101440778A (en) * 2007-11-22 2009-05-27 磊 邹 Flexible paddle changing mechanism of self-energy generating type wind power generator
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536653A (en) * 2012-01-19 2012-07-04 沈阳工业大学自控技术研究所 Variable pitch system belonging to independent variable pitch wind generating set and having protection function
CN102562452A (en) * 2012-01-19 2012-07-11 沈阳工业大学自控技术研究所 Pitch-varying system for synchronous variable-pitch wind generating set with protection function
CN102536653B (en) 2012-01-19 2013-07-24 沈阳工业大学自控技术研究所 Variable pitch system belonging to independent variable pitch wind generating set
CN105190026A (en) * 2013-03-11 2015-12-23 伊林工程服务公司 Wind turbine control system
CN105190026B (en) * 2013-03-11 2018-11-20 伊林工程服务公司 The wind turbine control system
CN103184974A (en) * 2013-03-29 2013-07-03 北京天诚同创电气有限公司 Power-frequency feathering variable-pitch system for inertial energy storage
CN107061145A (en) * 2017-06-05 2017-08-18 哈尔滨工程大学 Sea wave energy and wind energy collection device
CN107905947A (en) * 2017-11-02 2018-04-13 江苏燕山光伏设备有限公司 Solar energy and wind power comprehensive power generation device

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