WO2024119658A1 - Ensemble générateur éolien de classe mégawatt - Google Patents

Ensemble générateur éolien de classe mégawatt Download PDF

Info

Publication number
WO2024119658A1
WO2024119658A1 PCT/CN2023/081876 CN2023081876W WO2024119658A1 WO 2024119658 A1 WO2024119658 A1 WO 2024119658A1 CN 2023081876 W CN2023081876 W CN 2023081876W WO 2024119658 A1 WO2024119658 A1 WO 2024119658A1
Authority
WO
WIPO (PCT)
Prior art keywords
main shaft
speed
transmission structure
megawatt
wind turbine
Prior art date
Application number
PCT/CN2023/081876
Other languages
English (en)
Chinese (zh)
Inventor
马忠威
王文慧
曹丛磊
柴士伟
Original Assignee
迈格钠磁动力股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 迈格钠磁动力股份有限公司 filed Critical 迈格钠磁动力股份有限公司
Publication of WO2024119658A1 publication Critical patent/WO2024119658A1/fr

Links

Classifications

    • 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 present invention relates to the technical field of wind turbine generator sets, and in particular to a megawatt-class wind turbine generator set.
  • Wind turbines are generally divided into three types: direct drive, doubly fed and semi-direct drive.
  • the drive chain of a direct-drive wind turbine mainly consists of a hub, a main shaft and a main shaft bearing.
  • One end of the main shaft is directly connected to the hub.
  • the main shaft bearing is sleeved on the outside of the main shaft.
  • the inner ring of the main shaft bearing rotates with the main shaft.
  • the outer ring of the main shaft bearing is fixedly connected to the tower.
  • the other end of the main shaft is connected to the permanent magnet generator.
  • the wind energy drives the blade hub to directly drive a permanent magnet generator through the main shaft to generate electricity.
  • the drive chain of existing doubly fed and semi-driven wind turbines mainly consists of a hub, a main shaft, a main shaft bearing and a speed-increasing gearbox.
  • a speed-increasing gearbox between the main shaft and the doubly fed generator or the permanent magnet generator, the speed of the wind is increased by the speed-increasing gearbox, thereby improving the conversion efficiency of the wind.
  • Doubly-fed wind turbines or semi-driven wind turbines are driven by wind energy to drive the bladed paddle wheel hub through the main shaft to drive the speed-increasing gearbox.
  • the doubly-fed wind turbine then drives a doubly-fed generator through the speed-increasing gearbox to generate electricity.
  • the speed-increasing gearbox of the semi-driven wind turbine drives a permanent magnet generator to generate electricity.
  • the present invention provides a megawatt-class wind turbine generator set, whose motor and speed increaser part adopt a unitized design, which solves the problem that existing large-megawatt wind turbines are difficult to design, manufacture and maintain, increases the number of parts used in the equipment, reduces the difficulty of maintenance, and facilitates unitized replacement and repair when the equipment fails.
  • the main technical solutions adopted by the present invention include:
  • a megawatt-class wind turbine generator set includes a blade hub, a main transmission structure, a supporting structure, and a plurality of speed-increasing power generation units;
  • the impeller hub is fixedly connected to one side of the main transmission structure, and the main transmission structure is connected to a plurality of the speed-increasing power generation units;
  • a plurality of the speed-increasing power generation units are arranged on the support structure along the axial direction of the support structure, and one end of the main transmission structure is connected to the support structure and can rotate relative to the support structure;
  • Each of the speed-increasing power generation units comprises a secondary transmission structure and a generator
  • the first end of the auxiliary transmission structure is connected to the main transmission structure, and the second end of the auxiliary transmission structure is connected to the generator;
  • the impeller hub drives the auxiliary transmission structure to rotate through the main transmission structure, and the auxiliary transmission structure drives the generator to generate electricity.
  • the main transmission structure includes a driving ring gear and a main shaft;
  • the driving gear ring is provided with transmission teeth along the circumference of its inner side wall, and the transmission teeth are meshed with the first end of the auxiliary transmission structure.
  • the first end of the main shaft is coaxially fixedly connected with the driving gear ring, and the second end of the main shaft rotates relative to the supporting structure.
  • the diameter ratio of the drive ring gear to the main shaft is:.
  • the driving gear ring is a cylindrical structure with one end closed, and the driving gear ring includes Cylindrical sidewalls and disc-type end caps;
  • the disc-type end cover is detachably connected to the impeller hub, and the transmission gear is arranged inside the cylindrical side wall;
  • the disc-type end cover is connected to the main shaft.
  • a plurality of weight-reducing holes are provided on the disc-type end cover.
  • the auxiliary transmission structure includes a driven gear, a coupling and a speed increasing gear box;
  • the driven gear is meshed with the transmission teeth, the driven gear is connected to the speed increasing gear box through the coupling, and the speed increasing gear box is connected to the generator.
  • the supporting structure comprises a supporting seat extending radially outwardly along the main axis, and the supporting seat has a central through hole and a plurality of mounting holes;
  • the central through hole is used for plugging the main shaft
  • the plurality of mounting holes can be used to detachably mount corresponding speed-increasing power generation units.
  • the support seat includes a motor mounting seat and a connecting cylinder
  • the central through hole is opened along the axial direction of the connecting cylinder.
  • the motor mounting seat is an annular structure.
  • the motor mounting seat is arranged at one end of the connecting cylinder.
  • the motor mounting seat is used to mount the generator.
  • the support seat further comprises a support ring, and the support ring is sleeved and fixedly connected to the outside of the connecting cylinder;
  • a plurality of mounting holes are arranged on the support ring in an axial ring array along the support ring.
  • a main shaft bearing is arranged between the main shaft and the connecting cylinder, and the main shaft bearing is sleeved on the main shaft.
  • a megawatt-class wind turbine generator set of the present invention is connected to a blade hub through a first end of a main transmission structure, a second end of the main transmission structure rotates with a supporting structure, a plurality of speed-increasing power generation units are arranged on the supporting structure, the speed-increasing power generation units include a secondary transmission structure and a generator, and then the main transmission structure and the secondary transmission structure are connected to the blade hub, and the second end of the main transmission structure rotates with the supporting structure, and a plurality of speed-increasing power generation units are arranged on the supporting structure, and the speed-increasing power generation units include a secondary transmission structure and a generator.
  • the unitized manufacturing cost of the generator is lower.
  • the present invention can meet the power generation needs of wind turbines of different models by increasing or decreasing the number of speed-up power generation units, which is convenient for large-scale manufacturing and use, and is conducive to reducing costs, greatly reducing the difficulty of maintenance and reducing maintenance costs, and facilitating the direct use of replacement technology to replace damaged or repaired units, greatly improving engineering efficiency.
  • FIG1 is an overall three-dimensional schematic diagram of a megawatt-class wind turbine generator set according to the present invention.
  • FIG2 is a schematic diagram of the side cross-sectional structure of FIG1 ;
  • FIG. 3 is a schematic diagram of the structure of the speed-increasing power generation unit of FIG. 1
  • FIG4 is a schematic diagram of the three-dimensional structure of the main transmission structure of FIG1 ;
  • FIG. 5 is a schematic diagram of the three-dimensional structure of the supporting structure of FIG. 1 .
  • an embodiment of the present invention provides a megawatt-class wind turbine generator set, which can be applicable to semi-direct drive and doubly fed megawatt-class wind turbine generator sets, including a blade hub 1 , a main transmission structure 2 , a support structure 3 and a plurality of speed-increasing power generation units 4 .
  • the impeller hub 1 is fixedly connected to one side of the main transmission structure 2.
  • the main transmission structure 2 is connected to a plurality of speed-increasing power generation units 4.
  • the main transmission structure 2 includes a driving gear ring 21 and a main shaft 22.
  • the driving gear ring 21 is provided with transmission teeth 213 along the circumference of its inner side wall, and the transmission teeth 213 are meshed with the first end of the auxiliary transmission structure 41 of the speed-increasing power generation unit 4, and the first end of the main shaft 22 is coaxially fixedly connected with the driving gear ring 21, and the second end of the main shaft 22 rotates relative to the supporting structure 3.
  • the main transmission structure 2 adopts a driving gear ring 21, which is easy to process and shape, and is easy to install, and is integrally formed with the main shaft 22.
  • the driving gear ring 21 meshes with the auxiliary transmission structure 41 to achieve a better transmission effect.
  • the drive ring gear 21 of the main transmission structure 2 is the main key component in this embodiment, and the drive ring gear 21 is directly connected to the main shaft 22.
  • the main shaft 22 does not bear the main torque, but is mainly responsible for bearing the bending moment, radial and axial loads generated and transmitted by the blade hub 1.
  • the bending moment, radial and axial loads borne by the main shaft 22 are transmitted to the stationary support seat 31 through the main shaft bearing 5. Since the main shaft 22 does not bear torque, but only bears bending moment, radial and axial loads, the diameter of the main shaft 22 can be greatly reduced, the manufacturing cost of the main shaft 22 can be reduced, and the difficulty of processing and installation can be reduced.
  • the diameter ratio of the driving gear ring 21 to the main shaft 22 is 3:1.
  • the diameter of the driving gear ring 21 is much larger than the main shaft 22, so the diameter of the main shaft 22 can be reduced under the premise of adapting to large-megawatt wind turbines.
  • a main shaft bearing 5 is arranged between the main shaft 22 and the connecting cylinder 314, and the main shaft bearing 5 is sleeved on the main shaft 22. Since the main shaft 22 has a low load-bearing torque and a reduced shaft diameter, a small-sized main shaft bearing 5 can be used, and the design is more flexible.
  • the main shaft bearing 5 includes but is not limited to rolling bearings, sliding bearings, permanent magnet composite bearings, electromagnetic suspension bearings and the like. A variety of bearing options are more conducive to further reducing the use cost of bearings and improving the reliability and service life of bearings.
  • the above is the main structure of the base but is not limited to lightweight design of the base or other improvements to enhance structural strength.
  • the driving gear ring 21 is a cylindrical structure with one end closed, and the driving gear ring 21 includes a cylindrical side wall 211 and a disc-shaped end cover 212 .
  • the disc-shaped end cover 212 is detachably connected to the impeller hub 1, and the transmission gear 213 is provided inside the cylindrical side wall 211;
  • the disc-type end cover 212 is connected to the main shaft 22. Further, the disc-type end cover 212 is provided with a plurality of weight-reducing holes.
  • a plurality of speed-increasing power generation units 4 are arranged on the supporting structure 3 along the axial direction of the supporting structure 3, and one end of the main transmission structure 2 is connected to the supporting structure 3 and can rotate relative to the supporting structure 3;
  • the support structure 3 includes a support seat 31 extending radially outwardly along the main shaft 22, and the support seat 31 has a central through hole 311 and a plurality of mounting holes 312.
  • the central through hole 311 is used to plug the main shaft 22.
  • the plurality of mounting holes 312 can detachably mount the corresponding speed-increasing power generation unit 4.
  • the support seat 31 includes a motor mounting seat 313 and a connecting cylinder 314.
  • the central through hole 311 is opened along the axial direction of the connecting cylinder 314, and the main shaft 22 is inserted into the connecting cylinder 314, and rotates relative to the connecting cylinder 314 through the main shaft bearing 5.
  • the motor mounting seat 313 is an annular structure, and the motor mounting seat 313 is arranged at one end of the connecting cylinder 314.
  • the motor mounting seat 313 is used to install the generator 42.
  • the purpose of the motor mounting seat 313 and the connecting cylinder 314 is to install the speed-increasing power generation unit 4, so that the speed-increasing power generation unit 4 can be stably installed on the body of the wind turbine frame. And the connection effect with the driving gear ring 21 is better.
  • the support seat 31 further includes a support ring 315, which is sleeved and fixedly connected to the outside of the connecting cylinder 314.
  • a plurality of mounting holes 312 are arranged in an axial annular array on the support ring 315.
  • Each speed-increasing power generation unit 4 includes a secondary transmission structure 41 and a generator 42. The purpose is to further support the secondary transmission structure 41.
  • auxiliary transmission structure 41 is connected to the main transmission structure 2 , and a second end of the auxiliary transmission structure 41 is connected to the generator 42 .
  • the auxiliary transmission structure 41 includes a driven gear 411, a coupling 412 and a speed increasing gear
  • the driven gear 411 is meshed with the transmission gear 213 , and the driven gear 411 is connected to the speed increasing gear box 413 through the coupling 412 , and the speed increasing gear box 413 is connected to the generator 42 .
  • the auxiliary transmission structure 41 is a driven gear 411, a coupling 412 and a speed-increasing gearbox 413, but is not limited to other fasteners and connecting parts used for its connection.
  • the cancellation of the speed-increasing gearbox 413 or the direct integration of the speed-increasing gearbox 413 and the generator 42 is also included in the present invention.
  • a coupling 412 is installed between the speed-increasing gearbox 412 and the driven gear 411.
  • the purpose of installing the coupling 412 is to eliminate the influence of the unstable output of the driving end on the speed-increasing gearbox 413 and the generator 42.
  • the coupling 412 can adopt elastic couplings such as ball couplings, gear drum couplings, and spring couplings.
  • the cancellation of the coupling 412 or the integration of it with the front driven gear 411 and the rear end is also included in the present invention.
  • the coupling can be installed before or after the speed-increasing gearbox 413 according to needs.
  • the impeller hub 1 drives each driven gear 411 of the auxiliary transmission structure 41 to rotate axially through the main transmission structure 2, and the auxiliary transmission structure 41 drives the generator 42 to generate electricity.
  • the semi-direct-drive wind turbine generator set has the advantages of both the direct-drive unit and the doubly-fed unit. Specifically, compared with the doubly-fed wind turbine generator set, the semi-direct-drive wind turbine generator set has no high-speed gearbox failure and less maintenance than the medium-speed permanent magnet unit. Compared with the direct-drive wind turbine generator set, the semi-direct-drive wind turbine generator set can improve the driving efficiency of the generator drive chain through the speed-increasing gearbox. Therefore, in the process of the development of wind turbine generator sets towards large-scale, the development of semi-direct-drive unit technology has been continuously favored. Therefore, the generator 42 is preferably a permanent magnet generator, and of course a doubly-fed generator can also be used.
  • the speed-increasing power generation unit 4 is formed into multiple units, the first end of the main transmission structure 2 is connected to the blade wheel hub 1, the second end of the main transmission structure 2 rotates with the support structure 3, and multiple speed-increasing power generation units 4 are arranged on the support structure 3.
  • the speed-increasing power generation unit 4 includes a secondary transmission structure 41 and a generator 42.
  • the main transmission structure 2 cooperates with the secondary transmission structure 3 to convert wind power into electricity of multiple speed-increasing power generation units 4.
  • the unitized generator 4 has a lower manufacturing cost. Compared with the existing design, there are very few common parts between generators of different megawatts, and the frequency is required.
  • the invention can match the required power generation by increasing or decreasing the number of speed-increasing power generation units.
  • During processing only speed-increasing power generation units of the same specifications need to be set, which is convenient for large-scale manufacturing and use, and is conducive to reducing costs, greatly reducing the difficulty of maintenance and reducing maintenance costs. It is convenient to directly use replacement technology to replace damaged or repaired units, which greatly improves its durability.
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
  • a feature defined as “first” or “second” may explicitly or implicitly include one or more of the features.
  • the meaning of “plurality” is two or more, unless otherwise clearly and specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.
  • installed can be a fixed connection, a detachable connection, or an integral connection
  • it can be a mechanical connection or an electrical connection
  • it can be a direct connection or an indirect connection through an intermediate medium
  • it can be the internal connection of two elements or the interaction relationship between two elements.
  • first feature when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.
  • first feature when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature.
  • first feature when a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.
  • the terms “one embodiment”, “some embodiments”, “embodiment”, “example”, “specific example” or “some examples” refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example included in at least one embodiment or example of the present invention.
  • the schematic expressions of the above terms are not used herein. The same embodiment or example must be used.
  • the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
  • those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

Landscapes

  • Wind Motors (AREA)

Abstract

Ensemble générateur éolien de classe mégawatt, comprenant : un moyeu de pale (1), un élément structural de transmission primaire (2), un élément structural de support (3), et une pluralité d'unités de production d'énergie multiplicatrices de vitesse (4) ; le moyeu de pale (1) est relié de manière fixe à un côté de l'élément structural de transmission primaire (2), et l'élément structural de transmission primaire (2) est relié à la pluralité d'unités de production d'énergie multiplicatrices de vitesse (4) ; la pluralité d'unités de production d'énergie multiplicatrices de vitesse (4) sont disposées sur l'élément structural de support (3) le long de la direction axiale de l'élément structural de support (3), et une extrémité de l'élément structural de transmission primaire (2) est reliée à l'élément structural de support (3) et peut tourner par rapport à l'élément structural de support (3) ; les unités de production d'énergie multiplicatrices de vitesse (4) comprennent un élément structural de transmission secondaire (41) et un générateur (42) ; l'élément structural de transmission secondaire (41) et l'élément structural de transmission primaire (2) sont reliés, et l'élément structural de transmission secondaire (41) est relié au générateur (42) ; et le moyeu de pale (1) entraîne l'élément structural de transmission secondaire (41) en rotation au moyen de l'élément structural de transmission primaire (2). L'invention permet d'augmenter ou de diminuer le nombre d'unités de production d'énergie augmentant la vitesse en fonction de la quantité de production d'énergie requise.
PCT/CN2023/081876 2022-12-07 2023-03-16 Ensemble générateur éolien de classe mégawatt WO2024119658A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211564941.9A CN115750218A (zh) 2022-12-07 2022-12-07 一种用于兆瓦级的风力发电机组
CN202211564941.9 2022-12-07

Publications (1)

Publication Number Publication Date
WO2024119658A1 true WO2024119658A1 (fr) 2024-06-13

Family

ID=85344760

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/081876 WO2024119658A1 (fr) 2022-12-07 2023-03-16 Ensemble générateur éolien de classe mégawatt

Country Status (2)

Country Link
CN (1) CN115750218A (fr)
WO (1) WO2024119658A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115750218A (zh) * 2022-12-07 2023-03-07 迈格钠磁动力股份有限公司 一种用于兆瓦级的风力发电机组

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1619386A2 (fr) * 2004-07-23 2006-01-25 Wilhelm Schäfer Transmission pour installation éolienne de haute puissance
EP2031273A2 (fr) * 2007-08-27 2009-03-04 General Electric Company Ensemble de transmission à entraînement forcé à vitesse moyenne intégrée
WO2011027427A1 (fr) * 2009-09-02 2011-03-10 三菱重工業株式会社 Génératrice éolienne
CN202326028U (zh) * 2011-12-02 2012-07-11 华锐风电科技(集团)股份有限公司 一种多输出风力发电机组
CN113803216A (zh) * 2021-10-28 2021-12-17 中国船舶重工集团海装风电股份有限公司 风力发电机组
CN115750218A (zh) * 2022-12-07 2023-03-07 迈格钠磁动力股份有限公司 一种用于兆瓦级的风力发电机组

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1619386A2 (fr) * 2004-07-23 2006-01-25 Wilhelm Schäfer Transmission pour installation éolienne de haute puissance
EP2031273A2 (fr) * 2007-08-27 2009-03-04 General Electric Company Ensemble de transmission à entraînement forcé à vitesse moyenne intégrée
WO2011027427A1 (fr) * 2009-09-02 2011-03-10 三菱重工業株式会社 Génératrice éolienne
CN202326028U (zh) * 2011-12-02 2012-07-11 华锐风电科技(集团)股份有限公司 一种多输出风力发电机组
CN113803216A (zh) * 2021-10-28 2021-12-17 中国船舶重工集团海装风电股份有限公司 风力发电机组
CN115750218A (zh) * 2022-12-07 2023-03-07 迈格钠磁动力股份有限公司 一种用于兆瓦级的风力发电机组

Also Published As

Publication number Publication date
CN115750218A (zh) 2023-03-07

Similar Documents

Publication Publication Date Title
US7259472B2 (en) Wind turbine generator
CN101660499B (zh) 并网型混合驱动式变桨变速恒频风力发电机组
WO2007119953A1 (fr) Éolienne à palier principal unique
WO2023134268A1 (fr) Chaîne de transmission de système générateur éolien
WO2020156449A1 (fr) Ensemble générateur éolien vertical de type à compression d'air
WO2024119658A1 (fr) Ensemble générateur éolien de classe mégawatt
CN201496204U (zh) 并网型混合驱动式变桨变速恒频风力发电机组
WO2011106919A1 (fr) Éolienne
CN202326021U (zh) 一种双向风筒式磁悬浮风力发电装置
CN211852684U (zh) 一种紧凑型半直驱风电齿轮箱功率分流传动结构
CN111456896A (zh) 风车的风叶板随动角度调节装置
CN201513295U (zh) 一种直驱式风力发电机组
CN110486237B (zh) 一种兆瓦级低速直驱风力发电机轴系装置
CN203081656U (zh) 一种内转子电励磁直驱风电机组
CN201854158U (zh) 2.5、3和3.6兆瓦中转子低速永磁同步风力发电机
KR101161788B1 (ko) 동일축 풍력 발전장치
CN217300764U (zh) 一种球墨铸铁风力发电机组机座
CN218624514U (zh) 传动装置以及风力发电机组
CN218934614U (zh) 一种旋转式风电塔筒
CN216131026U (zh) 增速管筒水平轴换向传动风力发电***
CN203685481U (zh) 行星式增速风轮立轴风力发电机
CN221257013U (zh) 一种风电行星齿轮连接组件
CN213144655U (zh) 一种垂直轴风力发电机叶轮偏心切线推力结构
CN220667720U (zh) 一种共轴式反向双叶轮传动链结构及风力发电机组
CN211258885U (zh) 无铁芯盘式永磁发电机构成的风力发电***