WO2013181890A1 - 一种风电机组的磁悬浮主轴结构 - Google Patents

一种风电机组的磁悬浮主轴结构 Download PDF

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Publication number
WO2013181890A1
WO2013181890A1 PCT/CN2012/081486 CN2012081486W WO2013181890A1 WO 2013181890 A1 WO2013181890 A1 WO 2013181890A1 CN 2012081486 W CN2012081486 W CN 2012081486W WO 2013181890 A1 WO2013181890 A1 WO 2013181890A1
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Prior art keywords
main shaft
permanent magnet
bearing member
magnetic suspension
disposed
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PCT/CN2012/081486
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English (en)
French (fr)
Inventor
耿邦忠
徐叶
杨南翔
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深圳市顺禧机电技术开发有限公司
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Publication of WO2013181890A1 publication Critical patent/WO2013181890A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/0408—Passive magnetic bearings
    • F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
    • F16C32/0427—Passive magnetic bearings with permanent magnets on both parts repelling each other for axial load mainly
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/70—Bearing or lubricating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/50—Bearings
    • F05B2240/51—Bearings magnetic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/30—Application independent of particular apparatuses related to direction with respect to gravity
    • F16C2300/34—Vertical, e.g. bearings for supporting a vertical shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors
    • 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 motor device, in particular to a magnetic suspension main shaft structure of a wind turbine.
  • the existing general vertical axis wind turbines have a starting wind speed of more than 2 m/s. In some medium and large wind turbines, the required starting wind speed will be higher. It is basically impossible to achieve wind speeds of more than 2 m/s in different countries and regions, and at different times and seasons. Therefore, it is always possible to start wind turbines with a small starting wind speed. aims.
  • a magnetic suspension main shaft structure of a wind turbine comprising a main shaft of the generator and a bearing member, the main shaft is fixedly connected to the first permanent magnet, and the bearing member is provided with a second permanent The magnet, the first permanent magnet on the main shaft and the second permanent magnet on the bearing member are relatively vertically disposed, and the repulsive force generated by the repulsion of the first and second permanent magnets is used to cancel the connecting blade on the main shaft and the main shaft Gravity.
  • the bearing member is fixedly connected to the generator, the generator is placed above the carrying member, the carrying member is provided with an inner cavity, and the second permanent magnet is disposed at the bottom center of the inner cavity; the bottom end of the main shaft is fixed The first permanent magnet is connected, and the first permanent magnet on the main shaft is opposite to the second permanent magnet on the carrying member.
  • the magnitude of the repulsive force generated between the first permanent magnet on the main shaft and the second permanent magnet on the load bearing member is equal to the sum of the gravity of the main shaft, the vane and the first permanent magnet.
  • the main shaft is a hollow shaft, and the first permanent magnet is disposed at an upper end of the hollow cavity in the hollow shaft, the main shaft is placed above the bearing member, the bearing member is built in the hollow cavity of the main shaft, and the second permanent magnet is disposed at the top of the bearing member.
  • the first permanent magnet on the main shaft is disposed opposite to the second permanent magnet isotropic pole on the carrying member, and the main shaft and the carrying member are connected by bearings.
  • the magnitude of the repulsive force generated between the first permanent magnet on the main shaft and the second permanent magnet on the load bearing member is equal to the sum of the gravity of the main shaft, the vane and the first permanent magnet
  • the beneficial effects of the invention compared with the prior art are: 1) reducing the starting wind speed, the minimum starting wind speed of 0.8 m/s; 2) increasing the power generation efficiency by 20-30%; 3) low carbon, energy saving, and cost reduction.
  • FIG. 1 is a schematic structural view of a first preferred embodiment of the present invention
  • Figure 2 is a schematic view showing the structure of a second preferred embodiment of the present invention.
  • FIG. 1 is a schematic structural view of a first preferred embodiment of the present invention, including a generator 10 and its main shaft 20, a blade 30, and a bearing member 40.
  • the main shaft 20 is fixedly coupled to the first permanent magnet 50, and the bearing member 40 is disposed.
  • the second permanent magnet 60, the first permanent magnet 50 on the main shaft 20 and the second permanent magnet 60 on the carrying member 40 are disposed relatively vertically, and the first and second permanent magnets 50 and 60 are repelled by the same magnetic pole.
  • the force is used to counteract the gravity of the main shaft 20 and the blades 30.
  • the main shaft 20 and the air vane 30 of the running portion of the wind turbine reduce the axial pressure on the main shaft bearing of the generator, and the operation of the wind turbine The frictional resistance experienced by the main shaft 20 and the blades 30 is reduced, and the main shaft 20 and the blades 30 can be rotated to generate electricity under a small wind force.
  • the carrying member 40 is fixedly connected to the generator 10, the generator 10 is placed above the carrying member 40, the carrying member 40 is provided with an inner cavity, and the second permanent magnet 60 is disposed at the bottom center of the inner cavity.
  • the bottom end of the main shaft 20 is fixedly connected to the first permanent magnet 50, and the first permanent magnet 50 on the main shaft 20 is opposite to the second permanent magnet 60 on the carrying member 40.
  • the magnitude of the repulsive force generated between the first permanent magnet 50 on the main shaft 20 and the second permanent magnet 60 on the carrier member 40 is equal to the gravity of the main shaft 20, the vane 30 and the first permanent magnet 50.
  • the main shaft 20 and the vane 30 of the running portion of the wind turbine have the minimum axial pressure on the generator main shaft bearing.
  • the frictional resistance of the main shaft 20 and the blades 30 of the operation unit of the wind turbine is minimized, and the main shaft 20 and the blades 30 can be rotated and generated by the slight wind force.
  • FIG. 2 is a schematic structural view of a second preferred embodiment of the present invention, including a generator 11 and its main shaft 21, a blade 31, and a bearing member 41.
  • the spindle 21 is a hollow shaft, and the first permanent magnet 51 is provided.
  • the upper end of the hollow cavity in the hollow shaft 21, the main shaft 21 is placed above the bearing member 41, the bearing member 41 is built in the hollow cavity of the main shaft 21, and the second permanent magnet 61 is disposed at the top end of the bearing member 41, the first on the main shaft 21.
  • the permanent magnet 51 is disposed opposite to the second permanent magnet 61 on the carrier member 41, and the main shaft 21 is coupled to the carrier member 41 via a bearing (not shown).
  • the generator 11 and the load-bearing member 41 are respectively fixed to the ground, and the ground-loaded generator 11 and the self-gravity of the load-bearing member 41, the main shaft 21 of the running portion of the wind turbine and the blade 31 are in the first and second permanent magnets 51, Under the action of the repulsive force generated by the repulsion of the 610 isotropic magnetic pole, the axial pressure on the main shaft bearing of the generator is reduced, and the frictional resistance of the main shaft 21 and the blade 31 of the running portion of the wind turbine is reduced, and the main shaft 21 and the wind are reduced.
  • the leaf 31 is capable of rotating power generation under the action of a small wind.
  • the magnitude of the repulsive force generated between the first permanent magnet 51 on the main shaft 21 and the second permanent magnet 61 on the bearing member 41 is equal to three of the main shaft 21, the blade 31 and the first permanent magnet 51.
  • the sum of the gravity, at this time, the axial pressure of the main shaft 21 of the wind turbine and the blade 31 under the repulsive force generated by the repulsiveness of the first and second permanent magnets 51 and 61, the axial pressure of the main shaft bearing of the generator At the minimum, the frictional resistance of the main shaft 21 and the blades 31 of the operation unit of the wind turbine is minimized, and the main shaft 21 and the blades 31 can be rotated and generated by the slight wind force.

Abstract

一种风电机组的磁悬浮主轴结构，包括发电机（10）的主轴（20）及承载部件（40），所述的主轴（20）固定连接第一永磁体（50），所述承载部件（40）上设第二永磁体（60），主轴（20）上的第一永磁体（50）与承载部件（40）上的第二永磁体（60）同性磁极相对竖直设置，第一、二永磁体同性磁极相斥所产生的排斥力用以抵消主轴（20）和风叶（30）的重力。该磁悬浮主轴结构降低了风电机组的启动风速。

Description

一种风电机组的磁悬浮主轴结构
技术领域
本发明涉及一种电机设备，尤其涉及一种风电机组的磁悬浮主轴结构。
背景技术
现有的一般垂直轴风电机组启动风速在2米/秒以上，一些中、大型的风电机组中，所要求的启动风速会更高。在不同的国家和地区，以及在不同的时间、季节内，要求风速始终在2米/秒以上基本是不可能实现的，所以，能够以较小的启动风速启动风电机组是人们一直以来追求的目标。
发明内容
本发明的目的在于为克服现有技术的缺陷，而提供一种风电机组的磁悬浮主轴结构。
为实现上述目的，本发明采用以下技术方案：一种风电机组的磁悬浮主轴结构，包括发电机的主轴及承载部件，所述的主轴固定连接第一永磁体，所述承载部件上设第二永磁体，主轴上的第一永磁体与承载部件上的第二永磁体同性磁极相对竖直设置，第一、二永磁体同性磁极相斥所产生的排斥力用以抵消主轴和主轴上连接风叶的重力。
所述的承载部件与发电机固定连接，发电机置于承载部件的上方，所述承载部件设内凹腔，第二永磁体设在内凹腔的底部中心处；所述主轴的底部一端固定连接第一永磁体，主轴上的第一永磁体与承载部件上的第二永磁体同性磁极相对设置。
所述主轴上的第一永磁体与承载部件上的第二永磁体同性磁极之间所产生的斥力大小等于主轴、风叶和第一永磁体的重力之和。
所述的主轴为空心轴，第一永磁体设于空心轴内的空心腔上部顶端，主轴置于承载部件的上方，承载部件内置于主轴空心腔内，第二永磁体设于承载部件顶端，主轴上的第一永磁体与承载部件上的第二永磁体同性磁极相对设置，主轴与承载部件通过轴承连接。
所述主轴上的第一永磁体与承载部件上的第二永磁体同性磁极之间所产生的斥力大小等于主轴、风叶和第一永磁体的重力之和
本发明与现有技术相比的有益效果是：1）降低启动风速，最小可以达到启动风速0.8米/秒；2）提高发电效率20-30%；3）低碳、节能，降低成本。
附图说明
图1为本发明第一优选实施例的结构示意图；
图2为本发明第二优选实施例的结构示意图。
具体实施方式
为了更充分理解本发明的技术内容，下面结合具体实施例对本发明的技术方案进一步介绍和说明。
如图1所示，为本发明第一优选实施例的结构示意图，包括发电机10及其主轴20、风叶30、承载部件40，主轴20固定连接第一永磁体50，承载部件40上设第二永磁体60，主轴20上的第一永磁体50与承载部件40上的第二永磁体60同性磁极相对竖直设置，第一、二永磁体50、60同性磁极相斥所产生的排斥力用以抵消主轴20和风叶30的重力。风电机组的运转部主轴20和风叶30在第一、二永磁体50、60同性磁极相斥所产生的排斥力的作用下，其对发电机主轴轴承的轴向压力减小，风电机组的运转部主轴20和风叶30运转所受到的摩擦阻力就减小，主轴20和风叶30在较小的风力作用下就能够旋转发电。
具体的，所述的承载部件40与发电机10固定连接，发电机10置于承载部件40的上方，所述承载部件40设内凹腔，第二永磁体60设在内凹腔的底部中心处；所述主轴20的底部一端固定连接第一永磁体50，主轴20上的第一永磁体50与承载部件40上的第二永磁体60同性磁极相对设置。
进一步，所述主轴20上的第一永磁体50与承载部件40上的第二永磁体60同性磁极之间所产生的斥力大小等于主轴20、风叶30和第一永磁体50三者的重力之和，此时，风电机组的运转部主轴20和风叶30在第一、二永磁体50、60同性磁极相斥所产生的排斥力的作用下，其对发电机主轴轴承的轴向压力最小，风电机组的运转部主轴20和风叶30运转所受到的摩擦阻力就最小，主轴20和风叶30在微小的风力作用下就能够旋转发电。
如图2所示，为本发明第二优选实施例的结构示意图，包括发电机11及其主轴21、风叶31、承载部件41，所述的主轴21为空心轴，第一永磁体51设于空心轴21内的空心腔上部顶端，主轴21置于承载部件41的上方，承载部件41内置于主轴21空心腔内，第二永磁体61设于承载部件41顶端，主轴21上的第一永磁体51与承载部件41上的第二永磁体61同性磁极相对设置，主轴21与承载部件41通过轴承连接（图中未示出）。在安装时，发电机11及承载部件41分别与地面固定，由地面承载发电机11及承载部件41的自身重力，则风电机组的运转部主轴21和风叶31在第一、二永磁体51、610同性磁极相斥所产生的排斥力的作用下，其对发电机主轴轴承的轴向压力减小，风电机组的运转部主轴21和风叶31运转所受到的摩擦阻力就减小，主轴21和风叶31在较小的风力作用下就能够旋转发电。
具体的，所述主轴21上的第一永磁体51与承载部件41上的第二永磁体61同性磁极之间所产生的斥力大小等于主轴21、风叶31和第一永磁体51的三者重力之和，此时，风电机组的运转部主轴21和风叶31在第一、二永磁体51、61同性磁极相斥所产生的排斥力的作用下，其对发电机主轴轴承的轴向压力最小，风电机组的运转部主轴21和风叶31运转所受到的摩擦阻力就最小，主轴21和风叶31在微小的风力作用下就能够旋转发电。
以上所述仅以实施例来进一步说明本发明的技术内容，以便于读者更容易理解，但不代表本发明的实施方式仅限于此，任何依本发明所做的技术延伸或再创造，均受本发明的保护。

Claims (5)

  1. 一种风电机组的磁悬浮主轴结构，包括发电机的主轴及承载部件，其特征在于：所述的主轴固定连接第一永磁体，所述承载部件上设第二永磁体，主轴上的第一永磁体与承载部件上的第二永磁体同性磁极相对竖直设置，第一、二永磁体同性磁极相斥所产生的排斥力用以抵消主轴和主轴上连接风叶的重力。
  2. 根据权利要求1所述的风电机组的磁悬浮主轴结构，其特征在于：所述的承载部件与发电机固定连接，发电机置于承载部件的上方，所述承载部件设内凹腔，第二永磁体设在内凹腔的底部中心处；所述主轴的底部一端固定连接第一永磁体，主轴上的第一永磁体与承载部件上的第二永磁体同性磁极相对设置。
  3. 根据权利要求1或2任一所述的风电机组的磁悬浮主轴结构，其特征在于：所述主轴上的第一永磁体与承载部件上的第二永磁体同性磁极之间所产生的斥力大小等于主轴、风叶和第一永磁体的重力之和。
  4. 根据权利要求1所述的风电机组的磁悬浮主轴结构，其特征在于：所述的主轴为空心轴，第一永磁体设于空心轴内的空心腔上部顶端，主轴置于承载部件的上方，承载部件内置于主轴空心腔内，第二永磁体设于承载部件顶端，主轴上的第一永磁体与承载部件上的第二永磁体同性磁极相对设置，主轴与承载部件通过轴承连接。
  5. 根据权利要求4所述的风电机组的磁悬浮主轴结构，其特征在于：所述主轴上的第一永磁体与承载部件上的第二永磁体同性磁极之间所产生的斥力大小等于主轴、风叶和第一永磁体的重力之和。
PCT/CN2012/081486 2012-06-05 2012-09-17 一种风电机组的磁悬浮主轴结构 WO2013181890A1 (zh)

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CN113279911A (zh) * 2021-04-25 2021-08-20 徐州工程学院 一种悬浮式风力发电设备

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