WO2017096645A1 - Dispositif de changement de pas réglable ayant un support d'extrémité avant basé sur des pales articulés inclinées - Google Patents

Dispositif de changement de pas réglable ayant un support d'extrémité avant basé sur des pales articulés inclinées Download PDF

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Publication number
WO2017096645A1
WO2017096645A1 PCT/CN2015/098216 CN2015098216W WO2017096645A1 WO 2017096645 A1 WO2017096645 A1 WO 2017096645A1 CN 2015098216 W CN2015098216 W CN 2015098216W WO 2017096645 A1 WO2017096645 A1 WO 2017096645A1
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WIPO (PCT)
Prior art keywords
blade
hinge
hub
support
screw
Prior art date
Application number
PCT/CN2015/098216
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English (en)
Chinese (zh)
Inventor
曾攀
谢炜
雷丽萍
陆红亚
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清华大学
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Filing date
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Application filed by 清华大学 filed Critical 清华大学
Publication of WO2017096645A1 publication Critical patent/WO2017096645A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0224—Adjusting blade pitch
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/04—Automatic control; Regulation
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0256—Stall control
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/028—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources
    • 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
    • F05B2270/00—Control
    • F05B2270/10—Purpose of the control system
    • F05B2270/103—Purpose of the control system to affect the output of the engine
    • F05B2270/1033—Power (if explicitly mentioned)
    • 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
    • F05B2270/00—Control
    • F05B2270/60—Control system actuates through
    • F05B2270/602—Control system actuates through electrical actuators
    • 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

  • the invention relates to a large and medium-sized wind turbine blade structure and belongs to the field of wind power generation equipment.
  • Wind energy resources are abundant in the world, and almost all regions and countries have considerable wind energy reserves. In recent years, oil crises have occurred frequently. The oil reserves and coal reserves of all countries in the world will be exhausted within hundreds of years. Therefore, China, the United States, the United Kingdom, Spain and other countries have gradually shifted their attention to the development and utilization of new energy. As one of the important components of renewable energy, wind energy has attracted the attention of researchers and has received strong support from governments.
  • the fan blades are constantly moving toward the large-scale direction.
  • the weight and rated power of a single blade are proportional to the cubic and quadratic relationship of the blade length.
  • the mainstream wind power generation equipment for land and sea is 1 to 3MW and 3 respectively. ⁇ 5MW, the blade length is 26 ⁇ 50m and 50 ⁇ 65m.
  • the weight increases too fast, and the problems of transportation and installation, etc., make lightweighting the focus of research.
  • wind turbine blade materials used mainly wood, canvas and metal.
  • new composite materials such as light-weight FRP and carbon fiber reinforced composites are mainly used.
  • Danish LM has always been the world's largest wind power group with a market share of 45%.
  • the longest blade currently produced by LM is 61.5m, made of epoxy-based glass fiber reinforced composite material, and the weight of a single blade reaches 17.7 tons. It can be seen that simply relying on composite materials such as FRP can not meet the development requirements of large-scale and lightweight blades. New research must be done from the blade, blade system, etc.
  • the pitching technology of large wind turbines is a core technology of power regulation.
  • the pitching principle is realized by the rotary bearings at the root of the blade. This pitching method is called the blade self-rotating pitching mode.
  • the existing large-sized wind turbine blades adopt a cantilever beam structure, and a pitch bearing is installed at the root.
  • the bearing has to bear the stress of six components caused by the self-weight and aerodynamic load of the large blade, wherein the root of the cantilever beam is at the root of the cantilever beam.
  • Single-rotor horizontal-vertical-axis combined wind turbine system gives a way to passively adjust the power of the blade under the action of wind-load thrust, which is a downwind arrangement, the blade Only when the wind is large, the sweeping area of the blade changes due to the movement of the spring rod under the action of a large thrust, and thus the wind energy can be absorbed, but the blade has almost no angle of attack change.
  • the effect of pitching is very limited, and active control under any conditions cannot be achieved, for example, stopping under any conditions; and the spring rod movement is a passive motion with large uncertainty while the blades are dumping There is also a large rotational centrifugal force that makes this uncertainty more complicated.
  • the Chinese patent document proposes a two-stage inclined folding blade device for a large-scale wind power generator, which comprises a fan hub, a two-stage combined blade and a blade connecting device, and the main blade of the two-stage combined blade is fixed The blade, the folded blade is a rotating blade.
  • the technology has two characteristics: one is the use of inclined folding blades, so its pitching mode is the hinge rotation of the blade, because the blade hinge rotation axis is at an angle with the reference axis on the main blade, which is oblique folding Rotating, the blade will change the angle of attack with respect to the incoming flow when the blade is tilted and folded, so that the pitching effect will be produced; the second is the segmented blade structure, the main blade is the fixed blade, and the front blade is the folding pitch.
  • the blade, the folding pitch drive will be placed at the segmented blade. If it is a three-blade fan, three sets of drive devices are required. After the front blade is folded, the folding pitch drive is driven by the large rotational inertia force.
  • the force state of the device becomes very complicated. Therefore, this requires sufficient space in the middle of the blade to properly position the tilting folding blade device to provide the driving power for the blade folding, and also has sufficient strength to ensure safety under stress conditions, which gives the device
  • the application presents a big challenge.
  • the patent of the present invention is based on the pitching principle of the inclined hinged blade, and proposes a pitching mode of the full blade.
  • the linear motion of the supporting tie rod drives the tilting of the inclined hinged blade to change the relative angle of attack of the blade against the wind. It plays the role of pitching; since the blade is hinged support, the blade root does not bear the bending moment, which greatly improves the force state of the fan device.
  • the invention aims at two core technologies of simple power adjustment of the fan and improvement of the blade force state, and proposes an adjustable pitch device based on the front end support of the inclined hinge blade.
  • a front end support adjustable pitch device based on inclined hinged blades comprising a blade, a hub, a fan main shaft, a tilting hinge assembly, a front end support connection assembly and a front end pitch adjustment assembly, wherein the blade of the wind power generator device is The inclined hinge blade; the root of the blade is connected to the hub through the inclined hinge assembly, and is connected to the front pitch adjustment assembly in the blade root region through the front end support connection assembly; the front pitch adjustment assembly includes: a base flange, a front support shaft, a pitch motor, a screw sleeve sleeve and a hollow screw; the front support shaft is connected to the cylinder of the base flange through a front support shaft connecting bolt; the base of the base flange is fixed to the hub by a base connecting bolt; The lead screw is fixed on the front support shaft through the front support bearing of the lead screw and the rear support bearing of the lead screw; the front end of the hollow lead screw is provided with a screw sleeve outer sleeve slider for rotating
  • the outer sleeve of the screw sleeve is in sliding contact with the slider rail; the slider rail is fixed on the rail bracket; the root of the rail bracket It is fixed to the hub; pitch motor gear engaged with the spindle drive motor via a transmission gear, the pitch is fixed to the motor hub via a bracket.
  • the inclined hinge assembly comprises a hub hinge bracket and a blade hinge bracket, the blade hinge bracket is fixed at the root of the blade, the hub hinge bracket is fixed on the hub, and the blade hinge bracket and the hub hinge bracket have a plurality of corresponding Hinged holes, each hinged hole is connected by hinged bearings and bolts.
  • the front end support connecting assembly comprises a support pull rod, a blade connecting support, and a slider connecting support; the blade connecting support is fixedly connected with the blade, the self-rotating universal joint is installed, and the self-rotating universal joint is adopted The joint is connected with the support rod, the slider connecting bracket is fixedly connected with the outer sleeve sleeve of the screw rod, and the hinge bearing is installed, and is connected with the support rod through the hinge bearing.
  • the technical feature of the present invention is also that the hinge axis of the blade hinge bracket in the tilt hinge assembly is inclined at an angle of 45 to 75 between the hinge axis formed by the blade string.
  • the invention has the following characteristics and outstanding effects: 1 using a complete inclined hinged blade, the angle of attack of the blade is changed by the tilting of the blade, and the blade has obvious effect, and the pitch adjustment component is mainly Bearing screw, the adjustment method is linear motion, very simple, the hinge connection between the 3 blades and the hub, the force transmission mode is the support tie rod, so that the root of the blade does not bear the moment load, the force state is greatly improved, 4 due to The pitching mode is relatively simple and the stress state is improved, which greatly improves the reliability of the fan system and facilitates installation and maintenance. Therefore, the front end support adjustable pitching device based on the inclined hinge blade has the characteristics of simple structure, balanced force and simple control.
  • FIG. 1 is a front view of a front end support adjustable pitching device based on a tilt hinged blade provided by the present invention.
  • FIG. 2 is a side view of a front end support adjustable pitching device based on a tilted hinged blade.
  • Figure 3 is a detailed schematic view of the front end support adjustable pitch device.
  • FIG. 1 is a front view of a front end support adjustable pitching device based on a tilt hinged blade provided by the present invention, the device comprising a blade 1, a hub 2, a fan spindle 8, a tilting hinge assembly 5, a front end support connecting component 3 and a front end a pitch adjustment assembly 4, the blades of which are inclined hinged blades 1, the roots of which are connected to the hub 2 by a tilting hinge assembly 5, and connected to the front pitch adjustment assembly 4 in the blade root region by a front end support connection assembly 3
  • the hinge axis 5c of the blade hinge bracket 5a in the tilt hinge assembly 5 and the hinge axis 5d form an angle of inclination 6 between 45° and 75°.
  • FIG. 2 is a side view of the adjustable pitch control device based on the front end of the inclined hinged blade
  • Figure 3 is the front end support adjustable pitch paddle.
  • the front end pitch adjustment assembly 4 includes: a base flange 19, a front end support shaft 20, a pitch motor 17, a screw outer sleeve slider 13 and a hollow screw rod 14; the front end support shaft 20 is connected to the shaft through the front end support shaft 24 is connected to the cylinder of the base flange 19; the base of the base flange 19 is fixed to the hub 2 by the base connecting bolt 23; the hollow screw 14 is fixed at the front end by the lead screw front support bearing 21 and the screw rear support bearing 22
  • the front end of the hollow screw 14 is provided with a screw outer sleeve slider 13 for performing a rotary motion, and a screw drive gear 15 is fixed at the rear end thereof; the outer sleeve slider 13 and the slider guide 13a is in sliding contact; the slider guide 13a is fixed on the rail bracket 13b; the root of the rail
  • the tilt hinge assembly 5 includes a hub hinge bracket 5b and a blade hinge bracket 5a.
  • the blade hinge bracket 5a is fixed to the root of the blade, and the hub hinge bracket 5b is fixed to the hub.
  • the blade hinge bracket 5a and the hub hinge bracket 5b are provided with corresponding ones. Hinged holes, each hinged hole is connected by hinged bearings and bolts.
  • the front end support connection assembly 3 includes a support rod 10, a blade connection support 11 and a slider connection support 12; the blade connection support 11 is fixedly coupled to the blade, is mounted with a self-rotating universal joint 11a, and passes through the self-rotating universal joint 11a Connected to the support rod 10, the slider connection support 12 is fixedly connected with the outer sleeve sleeve 13 of the screw, and the hinge bearing is mounted, and is connected to the support rod 10 through the hinge bearing.
  • the fan impeller rotates along the direction of rotation of the impeller.
  • the wind speed is too large and the speed of the impeller is too fast, it is necessary to adjust the angle of attack of each blade in the impeller with respect to the incoming flow, and start the pitch motor 17 to drive the motor transmission gear 16, and
  • Driving the screw drive gear 15 causes the hollow screw 14 to rotate, thereby driving the outer sleeve slider 13 of the lead screw to linearly move toward the front end, and pulling the blade 1 forward by the support rod 10, since the root of the blade passes through the inclined hinge assembly 5 and The hub 2 is connected, and there is an inclination angle ⁇ of the hinge shaft.
  • the blade When it tilts forward, the blade must be tilted out of the way, thereby changing the relative angle of attack of the blade against the wind, and functioning as a pitch; therefore, through the hollow wire
  • the forward or reverse rotation of the bar 14 can linearly move the outer sleeve slider 13 toward the front end or the rear end, thereby causing the blade to tilt forward or backward to adjust the angle of attack of the blade relative to the incoming flow. It becomes larger or smaller; while the blade is tilted, it also makes a large change in the sweeping area of the blade, which can also enhance the effect of pitching. Since the blade is an articulated support, the blade root does not bear the bending moment, and the force state of the fan device can also be improved.

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  • Engineering & Computer Science (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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un dispositif de changement de pas réglable, lequel dispositif comprend un support d'extrémité avant basé sur des pales articulées inclinées, comprenant des pales, un moyeu, un arbre principal de ventilateur, un ensemble de liaison de support d'extrémité avant, et un ensemble de réglage de pas variable d'extrémité avant ; chaque pale du dispositif de générateur d'énergie éolienne est une pale articulée inclinée ; la partie pied de la pale est reliée au moyeu à l'aide d'un ensemble d'articulation incliné ; la partie avant centrale proche de la partie pied de la pale est reliée à l'ensemble de réglage de pas variable d'extrémité avant à l'aide de l'ensemble de liaison de support d'extrémité avant ; le dispositif de réglage de pas variable d'extrémité avant est principalement constitué par une bride de base, un arbre de support principal, une vis-mère et un moteur à pas variable ; le moteur à pas variable entraîne la vis-mère, et l'ensemble de liaison de support d'extrémité avant permet à la pale articulée inclinée de générer une inclinaison hors du plan, de telle sorte qu'un angle d'attaque au vent de la pale peut être changé de façon significative pour obtenir un effet de changement de pas. A l'aide d'un support d'articulation, la liaison de la partie pied de la pale ne supporte aucun moment de flexion, et l'état de contrainte du dispositif de ventilateur est considérablement amélioré. Le dispositif selon l'invention a une structure simple, une contrainte équilibrée, une commodité de commande, et analogues, et est apte à un réglage de pas variable de ventilateurs grands/moyens.
PCT/CN2015/098216 2015-12-10 2015-12-22 Dispositif de changement de pas réglable ayant un support d'extrémité avant basé sur des pales articulés inclinées WO2017096645A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510917639.0A CN105508138B (zh) 2015-12-10 2015-12-10 一种基于倾斜铰接叶片的前端支撑可调变桨装置
CN201510917639.0 2015-12-10

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WO2017096645A1 true WO2017096645A1 (fr) 2017-06-15

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Cited By (6)

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CN108869189A (zh) * 2018-08-01 2018-11-23 内蒙古工业大学 一体式折叠风力发电机
CN109236715A (zh) * 2018-11-14 2019-01-18 成都工业学院 一种轴流风机叶片调节机构及风机
CN109899243A (zh) * 2019-02-26 2019-06-18 泗阳高传电机制造有限公司 一种风电机组变桨系统中桨叶调节座
CN110005575A (zh) * 2019-04-17 2019-07-12 戚永维 一种全叶尖叶轮式双驱高效风力发电机
CN115143036A (zh) * 2022-07-06 2022-10-04 中广核(东至)新能源有限公司 用于风力发电机组的功率曲线优化装置和方法
CN117656377A (zh) * 2023-12-28 2024-03-08 东台迈盛智能科技有限公司 一种可调节型面的风电叶片模具及其型面调节方法

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CN104712500B (zh) * 2015-03-06 2017-10-24 东北大学 一种微小型水平轴风力发电机可变攻角机构
DK3267033T3 (da) * 2016-07-06 2019-07-01 Siemens Gamesa Renewable Energy As Vindmølle
CN112384692B (zh) * 2018-06-14 2023-09-29 维斯塔斯风力系统有限公司 具有在中间位置铰接的叶片的风力涡轮机
CN109026531B (zh) * 2018-08-21 2020-05-15 国家电投集团广西兴安风电有限公司 一种风力发电机的变桨装置
CN109026528B (zh) * 2018-08-21 2020-05-12 国家电投集团广西兴安风电有限公司 一种风力发电机的变桨及收纳方法
CN110374792B (zh) * 2019-07-01 2020-10-23 陈赛鸟 一种便于运输的使用寿命长的风力发电装置
CN110374812B (zh) * 2019-07-12 2021-02-09 广州市欧伊若科技有限公司 一种用于输电系统的安全可靠的风力发电机
CN110761944A (zh) * 2019-11-11 2020-02-07 内蒙古工业大学 主动调节叶片收缩角及攻角的伞形风力机功率调节装置
CN113357074A (zh) * 2021-07-27 2021-09-07 内蒙古工业大学 一种叶片倾角可变的水平轴风力发电设备

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US4310284A (en) * 1979-08-27 1982-01-12 Randolph Arthur J Automatically controlled wind propeller and tower shadow eliminator
US5226805A (en) * 1990-02-16 1993-07-13 Proven Engineering Products Limited Windmill having blades which alter their pitch angles automatically in response to both wind speed and load
CN101644230A (zh) * 2008-07-16 2010-02-10 宜兴市华泰国际集团工业有限公司 风力发电装置桨叶变桨矩装置
US20120080885A1 (en) * 2009-03-26 2012-04-05 NHEOILS (Societie par Actions (Simplifee) Rotor for a power generator, in particular for wind turbines
CN101936260A (zh) * 2010-08-26 2011-01-05 黄石华科新能源科技有限公司 变桨距变回转角风力发电机
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108869189A (zh) * 2018-08-01 2018-11-23 内蒙古工业大学 一体式折叠风力发电机
CN108869189B (zh) * 2018-08-01 2023-04-25 内蒙古工业大学 一体式折叠风力发电机
CN109236715A (zh) * 2018-11-14 2019-01-18 成都工业学院 一种轴流风机叶片调节机构及风机
CN109899243A (zh) * 2019-02-26 2019-06-18 泗阳高传电机制造有限公司 一种风电机组变桨系统中桨叶调节座
CN110005575A (zh) * 2019-04-17 2019-07-12 戚永维 一种全叶尖叶轮式双驱高效风力发电机
CN115143036A (zh) * 2022-07-06 2022-10-04 中广核(东至)新能源有限公司 用于风力发电机组的功率曲线优化装置和方法
CN115143036B (zh) * 2022-07-06 2024-01-23 中广核(东至)新能源有限公司 用于风力发电机组的功率曲线优化装置和方法
CN117656377A (zh) * 2023-12-28 2024-03-08 东台迈盛智能科技有限公司 一种可调节型面的风电叶片模具及其型面调节方法

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