WO2020211615A1 - Unité de générateur éolien - Google Patents

Unité de générateur éolien Download PDF

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Publication number
WO2020211615A1
WO2020211615A1 PCT/CN2020/081298 CN2020081298W WO2020211615A1 WO 2020211615 A1 WO2020211615 A1 WO 2020211615A1 CN 2020081298 W CN2020081298 W CN 2020081298W WO 2020211615 A1 WO2020211615 A1 WO 2020211615A1
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WO
WIPO (PCT)
Prior art keywords
bearing
hub
deflector
outer ring
generator set
Prior art date
Application number
PCT/CN2020/081298
Other languages
English (en)
Chinese (zh)
Inventor
吴立建
闻汇
施杨
杨飞
崔明
方攸同
Original Assignee
浙江大学
上海电气风电集团股份有限公司
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 浙江大学, 上海电气风电集团股份有限公司 filed Critical 浙江大学
Publication of WO2020211615A1 publication Critical patent/WO2020211615A1/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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/60—Cooling or heating of wind motors
    • 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
    • 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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 the field of wind power generation, in particular to a wind power generating set.
  • a common existing bearing cooling method is to install a water-cooled tube on the inner ring of the bearing or guide the cooling air to the vicinity of the inner ring, so that the heat generated by the bearing is mainly dissipated through the inner ring, and the outer ring of the bearing is set to It is not exposed to outside air and has no active cooling device, resulting in a lack of effective cooling of the outer ring. Therefore, it is often difficult to effectively control the temperature difference between the inner and outer rings using this type of cooling method. For example, when the temperature of the inner and outer rings is cooled to below 70°C in a high temperature environment, the temperature of the inner ring may be more than 10°C lower than the temperature of the outer ring.
  • Another bearing cooling method is to set the outer ring of the bearing to be completely exposed to the outside air.
  • the cooling effect of the outer ring will be greatly improved, but still obviously depends on the local geometry.
  • a major problem faced by this approach is that rainwater can fall onto the outer ring surface unimpeded, which greatly increases the risk of bearing corrosion.
  • the outer ring cooling in this way is not controllable, and may cause excessive cooling of the outer ring or even the entire bearing system in a low temperature environment.
  • the technical problem to be solved by the present invention is to overcome the disadvantages of relatively poor cooling effect of the bearing outer ring in the prior art and difficulty in achieving controllable cooling, and to provide a wind power generator set.
  • a wind power generator set which includes a bearing system, a rotor, a hub, and a deflector, the deflector is located outside the hub, the bearing system includes a bearing outer ring and a bearing inner ring, the rotor and the The hub is connected to the rotating part of the bearing system, and is characterized in that the wind turbine generator set further includes a bearing cooling device, the bearing cooling device includes a plurality of openings, the openings are located near the deflector or the deflector On the flow cover, the space between the flow cover and the hub communicates with the outside through the opening, at least a part of the bearing system is exposed in the space, and cooling air can flow into the space from the opening. The space is used to cool at least a part of the bearing system.
  • the opening is provided between the wind deflector and the rotor, which is the first opening, and the opening is provided between the wind deflector and the blades of the wind turbine, which is the second opening. Open up.
  • the opening is to enable the air in the cavity and the outside air to form convection.
  • the bearing cooling device includes a drive fan device located between the roots of the two blades or between the roots of the blades and the rotor, and the drive fan device is fixed to the The outer surface of the hub.
  • the driving fan device can further increase the amount of outside air entering the cavity.
  • the driving fan device includes a driving fan and a driving control device, and the driving control device is located on the driving fan and is used for controlling the rotation speed of the driving fan.
  • the drive control device controls the rotation speed of the drive fan so that the air volume entering the vicinity of the outer ring of the bearing is adjustable, thereby adjusting the cooling efficiency of the bearing cooling device.
  • the surface of the air deflector has a third opening, and the third opening is close to the driving fan device and is used to reduce the resistance of outside air entering and leaving the space between the air deflector and the hub .
  • the third opening can accelerate the rapid discharge of the air in the cavity, that is, the air near the outer ring of the bearing can be discharged immediately after being drawn by the driving fan device.
  • the bearing cooling device further includes at least one diversion structure, the cross section of the diversion structure is "L" shaped, and the diversion structure is fixed to the inner surface of the diversion cover.
  • one end of the diversion structure is a fixed end, the fixed end is fixed on the inner surface of the diversion cover, and the fixed end is close to the first opening.
  • the fold is close to the outer ring of the bearing, and an air diversion passage is formed between the guide structure and the rotor and the hub.
  • the air diversion passage is used to guide the outside air to flow through the outer ring of the bearing and the hub.
  • the surface of the hub and part of the rotor exposed to the air flow path reduces the temperature of the bearing outer ring, the hub and the rotor.
  • the deflector structure includes a deflector straight plate and a deflector curved plate, the deflector straight plate is connected to one end of the deflector curved plate, and the deflector straight plate is close to the rotor of the wind power generator.
  • One side of the blades of the unit is parallel, and the deflector is parallel to the outer surface of the hub.
  • the distance between the deflector straight plate and the end surface of the rotor close to the blade of the wind turbine is not more than 30 cm, and the deflector plate and the outer surface of the hub The distance between the two is not more than 30 cm, and the flow velocity of the outside air passing through the air guide passage is more than 1 m/s.
  • the bearing cooling device further includes at least one diversion structure, one end of the diversion structure is fixed to the outer surface of the hub, and a diversion structure is provided at a position where the diversion structure is connected to the hub. Openings, the diversion openings are evenly distributed on the diversion structure.
  • the distance between the flow guide structure and the end surface of the rotor close to the blade of the wind turbine generator set is not greater than 30 cm.
  • the bearing cooling device further includes a cooling fan device, the cooling fan device is installed on the outer surface of the hub or the inner surface of the deflector, and the air outlet direction of the cooling fan device faces the The outer ring of the bearing, the cooling fan device is close to the outer ring of the bearing, and the distance from the outer ring of the bearing is not more than 30 cm, and the cooling fan device is used to increase the air flow rate near the outer ring of the bearing, Strengthen the local convection heat exchange near the outer ring of the bearing, and reduce the temperature of the outer ring of the bearing.
  • the cooling fan device is evenly arranged on the outer surface of the hub or the inner surface of the flow deflector along the circumferential direction of the hub or the flow deflector.
  • the wind turbine generator sets a bearing cooling device between the deflector and the hub to increase the air convection on the bearing outer ring surface, accelerate the heat exchange between the air and the bearing outer ring surface, and enhance the cooling effect of the bearing outer ring.
  • the cooling systems of the inner ring and the outer ring are independent of each other, and each has a certain degree of adjustability, so that the temperature difference between the inner and outer rings can be further effectively controlled by the control device. Therefore, each component of the bearing will have a more consistent degree of thermal deformation, thereby improving the working condition of the bearing and prolonging the life of the bearing, and the bearing cooling device has a simple structure, is safe and convenient to install, and is easy to implement and use.
  • Fig. 1 is a schematic diagram of the structure of a wind turbine generator according to Embodiment 1 of the present invention.
  • Fig. 2 is a schematic diagram of the structure of a wind power generating set according to Embodiment 2 of the present invention.
  • the present invention provides a wind turbine generator set, which includes a bearing system, a rotor 2, a hub 3, and a shroud 4.
  • the bearing system includes a bearing outer ring 11 and a bearing inner ring 12, and the rotor 2 is connected to the bearing
  • the rotating part of the system is the bearing outer ring 11 in this embodiment, and the hub 3 is connected to the bearing outer ring 11.
  • An air deflector 4 is provided on the outer side of the hub 3 so as to form a cavity between the hub 3 and the air deflector 4. Part of the surface of the bearing outer ring 11, the rotor 2 and the hub 3 is exposed to the air in the cavity.
  • the wind power generator set also includes a bearing cooling system, which is used to cool the bearing outer ring 11, the hub 3, and the rotor 2.
  • the bearing cooling device includes a plurality of openings. These openings are respectively located between the deflector 4 and the rotor 2, between the deflector 4 and the blades 5, and on the surface of the deflector 4. These openings connect the cavity and the outside to form There are multiple cooling paths for the heat exchange airflow, so that the air in the cavity and the outside air can form convection, and the temperature inside the cavity is reduced. Specifically, it includes a first opening 71 at the junction of the wind deflector 4 and the rotor 2 and a second opening 72 between the wind deflector 4 and the blade 5 of the wind turbine.
  • the first opening 71 communicates the space between the flow deflector 4 and the rotor 2 and the outside
  • the second opening 72 communicates the space between the flow deflector 4 and the hub 3 and the outside.
  • a driving fan device 61 is provided inside the cavity and on the outer surface of the hub 3 so that the amount of outside air entering the cavity can be further increased.
  • the driving fan device 61 is arranged on the hub 3 between the roots of the blades 5 of the two wind turbines, and the driving fan device 61 rotates with the hub 3.
  • a driving fan device 61 may also be installed on the hub 3 between the roots of the blades 5 of the wind turbine generator set and the rotor 2 to achieve a better convective heat exchange effect.
  • the driving fan device 61 is composed of a driving fan and a driving control device, the frequency of which is adjustable.
  • the drive control device is installed on the drive fan, and is used to control the speed of the drive fan, so that the air volume entering the vicinity of the bearing outer ring 11 is adjustable.
  • a temperature sensor can also be installed on the outer ring 11 of the bearing, and the drive control device is set to be connected with the temperature sensor, so that adjustment can be made according to the temperature sensor measurement value on the outer ring 11 of the bearing.
  • the specific adjustment based on the measured value of the temperature sensor belongs to the prior art, so it will not be repeated here.
  • a third opening 73 can be provided on the surface of the shroud 4 near the driving fan device 61, so that the air near the bearing outer ring 11 will be discharged from the cavity immediately after being drawn by the driving fan device 61 , That is, the resistance of outside air entering and leaving the space between the deflector 4 and the hub 3 is reduced, so that more outside air flows through the bearing outer ring 11 and the surface of the hub 3.
  • the arrangement and specifications of the third opening 73 are the same as other openings on the surface of the air deflector 4.
  • a flow guide structure 62 is provided on the inner side of the flow guide cover 4, which is another part of the bearing cooling device.
  • the cross section of the diversion structure 62 is an "L" shape, one end is a fixed end, which is fixed on the inner surface of the diversion cover 4, the fixed end is close to the first opening 71, and the bend of the diversion structure 62 is close to the outside of the bearing Circle 11.
  • the diversion structure 62 can also be a flat plate, one end of the flat plate is fixed on the surface of the hub 3, and evenly distributed diversion openings are opened near the fixed position to achieve the same diversion effect.
  • the guide structure 62 with an "L" cross-section includes a straight guide plate and a curved guide plate.
  • the guide straight plate and the guide curved plate are connected.
  • the guide straight plate is connected to the rotor 2 near the blade 5 of the wind turbine.
  • One side of the end surface is parallel, and the deflector plate is parallel to the outer surface of the hub 3, that is, an air diversion passage is formed between the diversion structure 62 and the rotor 2 and the hub 3 for guiding the outside air to flow through the air diversion passage, thereby
  • the air flow 8 can flow over part of the surface of the rotor 2, the bearing outer ring 11 and the hub 3 at a higher speed, and the surface temperature of the rotor 2, the bearing outer ring 11 and the hub 3 is reduced.
  • the flow guiding structure 62 can also be arranged at other angles.
  • the distance between the straight deflector and the end surface of the rotor 2 is not more than 30 cm, and the distance between the deflector and the outer surface of the hub 3 is not more than 30 cm, that is, to reach the outside air passing through the air diversion passage
  • the flow velocity is greater than 1m/s. In this embodiment, both distances are set to 30 cm.
  • the outside air can be extracted, and the airflow 8 can quickly pass through the air guide path to exchange heat with the bearing outer ring 11, that is, the surface of the bearing outer ring 11 is air-cooled to reduce the outer bearing Circle 11 temperature effect.
  • the exchanged hot air flow 8 is drawn into the cavity away from the bearing outer ring 11 by the driving fan device 61, and is discharged to the outside through the third opening 73 or the second opening 72.
  • the present invention mainly relates to the specific cooling method of the bearing outer ring 11. Compared with the bearing inner ring 12, a corresponding active cooling system needs to be provided to ensure the mutual cooperation of the cooling of the bearing outer ring 11 and the bearing inner ring 12 to achieve the entire bearing system The degree of thermal deformation is close to the same, thus ensuring that the bearing system can work well.
  • the structure of this embodiment is basically the same as that of Embodiment 1, and the difference is that: the guide structure 62 is replaced with a cooling fan device 63, that is, a plurality of cooling fan devices 63 are close to the outside of the bearing along the surface of the hub 3.
  • the ring 11 is evenly arranged and fixed in the circumferential direction to locally cool the outer ring 11 of the bearing.
  • a plurality of cooling fan devices 63 may also be evenly arranged and fixed in the circumferential direction along the inner surface of the flow deflector 4 near the outer ring 11 of the bearing.
  • the air outlet direction of the cooling fan device 63 faces the bearing outer ring 11, and the distance between the cooling fan device 63 and the bearing outer ring 11 is not more than 30 cm.
  • the size and power of the cooling fan device 63 may be smaller than those of the driving fan device 61. These cooling fan devices 63 fixed near the bearing outer ring 11 can make the air flow 8 around the bearing outer ring 11 have a flow rate greater than that of other areas in the cavity, thereby enhancing the local convective heat transfer near the bearing outer ring 11, thereby improving The bearing outer ring 11, the hub 3 and the rotor 2 are cooled.
  • the direction of the cooling air flow 8 shown in Fig. 2 of this embodiment is only two possible flow directions.
  • the specific air flow direction depends on the opening geometry of the wind turbine, the specific arrangement in the cavity, etc., and is also affected by the outside world. The influence of factors such as airflow.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Wind Motors (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

Unité de générateur éolien, comprenant un système de palier, un rotor (2), un moyeu (3) et un couvercle de guidage d'écoulement (4). Le couvercle de guidage d'écoulement (4) est situé à l'extérieur du moyeu (3); le système de palier comprend une bague extérieure de palier (11) et une bague intérieure de palier (12); et le rotor (2) et le moyeu (3) sont reliés à une partie rotative du système de palier. L'unité de générateur éolien comprend en outre un dispositif de refroidissement de palier comportant plusieurs ouvertures situées sur ou à proximité du couvercle de guidage d'écoulement (4), et l'espace entre le couvercle de guidage d'écoulement (4) et le moyeu (3) est en communication avec l'extérieur au moyen des ouvertures. Au moins une partie du système de palier est exposée à l'espace, et de l'air de refroidissement peut s'écouler dans l'espace à partir des ouvertures pour refroidir le système de palier.
PCT/CN2020/081298 2019-04-16 2020-03-26 Unité de générateur éolien WO2020211615A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910303376.2 2019-04-16
CN201910303376.2A CN109944746B (zh) 2019-04-16 2019-04-16 风力发电机组

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WO2020211615A1 true WO2020211615A1 (fr) 2020-10-22

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WO (1) WO2020211615A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109944746B (zh) * 2019-04-16 2020-10-23 浙江大学 风力发电机组
CN110318958B (zh) * 2019-07-17 2022-02-08 上海电气风电集团股份有限公司 直驱发电机主轴承机构的冷却***及直驱发电机
CN113931937A (zh) * 2020-06-29 2022-01-14 新疆金风科技股份有限公司 轴承冷却***、轴承冷却方法和风力发电机组

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2623777A1 (fr) * 2011-02-15 2013-08-07 Mitsubishi Heavy Industries, Ltd. Appareil de production d'énergie éolienne
CN106677998A (zh) * 2015-11-06 2017-05-17 优利康达（天津）科技有限公司 一种抗风沙的防护罩
CN206290387U (zh) * 2016-12-20 2017-06-30 北京金风科创风电设备有限公司 风力发电机组
CN206722990U (zh) * 2017-05-08 2017-12-08 北京金风科创风电设备有限公司 用于风力发电机组的散热***及风力发电机组
CN109944746A (zh) * 2019-04-16 2019-06-28 浙江大学 风力发电机组

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2400419B (en) * 2003-04-12 2006-07-19 Rolls Royce Plc Air cooled bearing
JP5404764B2 (ja) * 2009-02-27 2014-02-05 三菱重工業株式会社 風力発電装置
CN105221360B (zh) * 2015-09-16 2020-07-17 北京金风科创风电设备有限公司 风力发电机组的冷却***及风力发电机组
CN205207057U (zh) * 2015-12-10 2016-05-04 北京金风科创风电设备有限公司 风力发电机组冷却***及风力发电机组
CN106640554B (zh) * 2016-12-12 2019-01-08 北京金风科创风电设备有限公司 风力发电机组散热***、散热方法及风力发电机组

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2623777A1 (fr) * 2011-02-15 2013-08-07 Mitsubishi Heavy Industries, Ltd. Appareil de production d'énergie éolienne
CN106677998A (zh) * 2015-11-06 2017-05-17 优利康达（天津）科技有限公司 一种抗风沙的防护罩
CN206290387U (zh) * 2016-12-20 2017-06-30 北京金风科创风电设备有限公司 风力发电机组
CN206722990U (zh) * 2017-05-08 2017-12-08 北京金风科创风电设备有限公司 用于风力发电机组的散热***及风力发电机组
CN109944746A (zh) * 2019-04-16 2019-06-28 浙江大学 风力发电机组

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