CN110094313B - Main bearing cooling system of wind generating set and wind generating set - Google Patents

Main bearing cooling system of wind generating set and wind generating set Download PDF

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Publication number
CN110094313B
CN110094313B CN201810094869.5A CN201810094869A CN110094313B CN 110094313 B CN110094313 B CN 110094313B CN 201810094869 A CN201810094869 A CN 201810094869A CN 110094313 B CN110094313 B CN 110094313B
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cooling
main bearing
water
cooling system
inner ring
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CN110094313A (en
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李金梦
吴立洲
冯占辉
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Jiangsu Goldwind Science and Technology Co Ltd
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Jiangsu Goldwind Science and Technology Co Ltd
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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
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (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)
  • Mounting Of Bearings Or Others (AREA)
  • Wind Motors (AREA)

Abstract

The invention provides a main bearing cooling system of a wind generating set and the wind generating set, wherein a hub of the wind generating set is connected with a generator in a cabin through a main bearing, the main bearing comprises a main bearing outer ring and a main bearing inner ring which rotate relatively, and the hub drives a rotor of the generator to rotate through the main bearing. The cooling system includes: the water-cooled radiator is arranged on the main bearing inner ring and/or the main bearing outer ring; an external radiator disposed outside the nacelle; the inlet of the water-cooling radiator is connected with the outlet of the external radiator through a cooling medium transmission pipeline, and the outlet of the water-cooling radiator is connected with the inlet of the external radiator through a cooling medium transmission pipeline. The cooling system uses the cooling liquid to replace air, saves the space of the device and improves the cooling efficiency.

Description

Main bearing cooling system of wind generating set and wind generating set
Technical Field
The invention relates to the technical field of wind power generation, in particular to a main bearing cooling system for a wind generating set and the wind generating set with the same.
Background
The wind generating set is a device composed of components such as a blade, a hub, a generator, a cabin, a base, a tower, a foundation and the like, and the blade, the hub and the generator are all components operating in high altitude, so that the connection among the components is particularly important. The main bearing is a key connecting component between the hub and the generator and is also a key component for determining whether the wind generating set can normally operate.
Typically, the main bearing comprises a main bearing inner ring and a main bearing outer ring, which are rotatable relative to each other. The main bearing is typically a rolling bearing or a sliding bearing. In a wind power plant, if the main bearing inner ring is connected to the stationary part, the main bearing outer ring is connected to the rotating part and vice versa. During operation of the main bearing heat is generated due to friction, and the resulting temperature increase affects the thermal expansion rate of the main bearing and thus the clearance of the main bearing. In the direct-drive wind generating set, the air gap of the generator is mainly determined by the gap of the main bearing, namely the gap of the main bearing influences the generating efficiency. In addition, the clearance of the main bearing has a great influence on a life cycle, and therefore, the clearance should be controlled within a certain range. The temperature of the inner ring of the main bearing is controlled to control the clearance within a certain range, so that the reliability and the service life of the main bearing can be improved.
During the operation of the wind generating set, if the heat generated by the main bearing cannot be timely and effectively dissipated, the temperature inside the main bearing will gradually rise. On one hand, the viscosity of lubricating oil is reduced due to excessive temperature, and the thickness of an oil film between a rolling body and an inner ring raceway and an outer ring raceway is reduced by taking a rolling bearing as an example, so that the surface of a part in the main bearing can be tempered and burned, and even pitting and surface peeling phenomena can occur; on the other hand, the radial size of the main bearing of the wind generating set is large, and the inner ring, the outer ring and the retainer can cause large geometric displacement due to thermal deformation, so that large internal stress is generated.
The existing main bearing cooling system usually uses air as a cooling medium, so that the cooling efficiency is low and the occupied space is large.
In addition, there are many electronic and mechanical components in the hub and nacelle that generate heat, such as pitch systems, yaw motors, nacelle cabinets, inverter cabinets, and the like. If the heat cannot be dissipated in time, the viscosity of the hydraulic oil is reduced due to overhigh temperature of the hydraulic oil, so that the load discharge of the hydraulic pump is increased, and the output is reduced. In addition, excessive temperatures can also affect the life of the hose and seals. And other electronic components can be damaged or even fail due to overhigh temperature, so that the normal operation of the wind generating set is finally influenced.
Disclosure of Invention
The invention aims to provide a main bearing cooling system for a wind generating set, which effectively radiates heat of a main bearing by a cooling medium such as water, and integrates cooling of a cabin, a hub and the main bearing into one cooling system to improve efficiency and reduce cost.
According to an aspect of the present invention, there is provided a main bearing cooling system of a wind turbine generator system, wherein a hub of the wind turbine generator system and a generator inside a nacelle are connected through a main bearing, the main bearing comprises a main bearing outer ring and a main bearing inner ring which rotate relatively, the hub drives a rotor of the generator to rotate through the main bearing, the cooling system comprises: the water-cooled radiator is arranged on the main bearing inner ring and/or the main bearing outer ring; an external radiator disposed outside the nacelle; the inlet of the water-cooling radiator is connected with the outlet of the external radiator through a cooling medium transmission pipeline, and the outlet of the water-cooling radiator is connected with the inlet of the external radiator through a cooling medium transmission pipeline.
The water-cooled radiator can be a water-cooled plate, the water-cooled plate is arranged on the inner surface of the main bearing inner ring, the outer surface of the water-cooled plate is attached to the inner surface of the main bearing inner ring, and the length of the water-cooled plate is at least one part of the inner perimeter of the main bearing inner ring; and/or the water cooling plate is arranged on the outer surface of the main bearing outer ring, the inner surface of the water cooling plate is attached to the outer surface of the main bearing outer ring, and the length of the water cooling plate is at least one part of the outer circumference of the main bearing outer ring.
The cooling system may include a plurality of the water-cooled plates covering the entire inner perimeter of the main bearing inner ring or the entire outer perimeter of the main bearing outer ring.
The water cooling plate may include a plurality of cooling tubes separated from each other and headers provided at both ends of the plurality of cooling tubes.
A fin structure can be formed on the inner surface of the water cooling plate; and/or the outer surface of the water cooling plate can be provided with a fin structure.
The cooling system may further comprise air lines inside the main bearing inner ring for air passage between the nacelle and the hub.
The cooling system may further include a flow directing device that directs air in the nacelle through the air line into the hub.
The cooling system may also include a flow blocking device located between the fin structure and the air line disposed on the inner surface of the water cooled plate, the flow blocking device directing air within the hub toward the fin structure.
The cooling system may further comprise a heat transfer assembly disposed between the inner surface of the main bearing inner ring and the water cooled plate or between the outer surface of the main bearing outer ring and the water cooled plate.
The water-cooled plate may be made using aluminum, copper, or stainless steel material.
According to another aspect of the invention, a wind park is provided, comprising a cooling system as described above.
The cooling system provided by the embodiment of the invention uses the cooling liquid to replace air, so that the space of the device is saved, and the cooling efficiency is improved. In addition, the cooling liquid for the main bearing cooling system can be provided by the existing cooling system in the engine room, so that the cost can be reduced.
According to the cooling system provided by the embodiment of the invention, the cooling effect of the cooling liquid can be fully exerted, and not only is the cooling of the main bearing realized, but also the cooling of hot air in the hub is realized.
According to the cooling system provided by the embodiment of the invention, the cabin cooling, the bearing cooling and the hub cooling can be integrated into one cooling system, so that the integration of a plurality of cooling systems is realized, and the equipment cost and the occupied space are saved.
Drawings
FIG. 1 is a schematic diagram illustrating a water-cooled plate and fin structure according to the present invention.
FIG. 2 is a schematic diagram illustrating cooling tubes and headers in a water cooled plate.
Fig. 3 is a schematic diagram showing the outer profile of a water cooled plate.
FIG. 4 is a schematic diagram illustrating the location of water cooled plates and fin structures in the main bearing.
Fig. 5 is a schematic view showing the flow of air in the main bearing.
Fig. 6 is a schematic view showing a circulation process of air between the nacelle and the hub.
The reference numbers illustrate:
1-an air line; 2-flow blocking means; 4-water cooling plate; 5-a fin structure; 6-main bearing outer ring; 7-a main bearing inner ring; 9-a transformer; 10-a pitch system; 11-a yaw system; 12-a current transformer; 13-other Components
Detailed Description
Embodiments of the present invention will now be described more fully with reference to the accompanying drawings.
The wind generating set comprises a tower barrel, a cabin, a hub provided with blades, a generator and a main bearing, wherein the cabin is positioned at the top of the tower barrel, the hub is positioned at the front end of the cabin, the generator is arranged in the cabin, the hub is connected with the generator through the main bearing, the main bearing comprises a main bearing outer ring and a main bearing inner ring, and the hub drives a rotor of the generator to rotate through the main bearing. For an inner rotor type wind generating set, a main bearing outer ring is connected to a stator of a generator, a main bearing inner ring is connected to a rotor of the generator, and a hub is connected to the main bearing inner ring so as to drive the rotor of the generator to rotate through the main bearing inner ring. For an outer rotor type wind generating set, in contrast, a main bearing outer ring is connected to a rotor of a generator, a main bearing inner ring is connected to a stator of the generator, and a hub is connected to the main bearing outer ring so as to drive the rotor of the generator to rotate through the main bearing outer ring.
Referring to fig. 1 to 4, a main bearing cooling system of a wind turbine generator set according to an embodiment of the present invention includes: the water-cooled radiator is arranged on the main bearing inner ring 7 and/or the main bearing outer ring 6; and an external radiator disposed outside the nacelle. The inlet of the water-cooling radiator is connected with the outlet of the external radiator through a cooling medium transmission pipeline, and the outlet of the water-cooling radiator is connected with the inlet of the external radiator through a cooling medium transmission pipeline to form a cooling medium circulation loop.
The term "water cooling" as used herein means cooling by a liquid cooling medium, and is not limited to the use of water as a cooling medium. Further, although the inner rotor type wind turbine generator set will be described later as an example, the present invention is also applicable to an outer rotor type wind turbine generator set.
In-cabin water cooling systems are known which cool heat generating components in the cabin. The invention changes the prior air cooling mode aiming at the main bearing into the water cooling mode and utilizes the cooling medium of the water cooling system in the engine room. That is, the cooling medium flowing out of the external radiator of the cabin water cooling system is divided into two paths, one path is used for water cooling of the heat generating components in the cabin, the other path is used for water cooling of the main bearing, and then the two paths of cooling medium return to the external radiator.
The position of the water-cooled radiator is not limited to the inner surface of the main bearing inner ring 7 and the outer surface of the main bearing outer ring 6, which will be described later, and may be any position as long as it is attached to the inner ring and/or the outer ring of the main bearing and can absorb heat.
Preferably, in the embodiment, the water-cooled heat sink may be a water-cooled plate 4, and the outer surface of the water-cooled plate 4 may be made smooth. The water cooling plate 4 may be arranged on the inner surface of the main bearing inner ring 7, the outer surface of the water cooling plate 4 being attached to the inner surface of the main bearing inner ring 7, the length of the water cooling plate 4 being at least a part of the inner circumference of the main bearing inner ring 7, or in another alternative embodiment, the water cooling plate 4 may be arranged on the outer surface of the main bearing outer ring 6, the inner surface of the water cooling plate 4 being attached to the outer surface of the main bearing outer ring 6, the length of the water cooling plate 4 being at least a part of the outer circumference of the main bearing outer ring 6. Alternatively, the water-cooling plates 4 may be provided on the inner surface of the main bearing inner ring 7 and the outer surface of the main bearing outer ring 6, respectively.
Here, the number of the water cooling plates 4 may be plural, and the plural water cooling plates 4 may cover the entire inner circumference of the main bearing inner ring 7 or the entire outer circumference of the main bearing outer ring 6. The water-cooling plate 4 may be made of aluminum, copper, or stainless steel material. Here, the stainless steel material may include chromium stainless steel, chromium nickel stainless steel, chromium manganese nitrogen stainless steel, and the like, but is not limited thereto. The water-cooled plate 4 may be fixed to the inner surface of the main bearing inner ring 7 or the outer surface of the main bearing outer ring 6 using bolts, but is not limited thereto.
In addition, the water-cooled plate 4 may include a plurality of cooling tubes 14 separated from each other and headers 15 provided at both ends of the plurality of cooling tubes 14 to remove heat of the main bearing by a cooling medium flowing in the water-cooled plate 4.
In addition, the water-cooled plate 4 may have a fin structure 5 formed on an inner surface or an outer surface thereof. When the hot air from the hub flows over the surface of the fin structure 5, cooling of the hot air is achieved, so that the cooling medium fully exerts its cooling effect. The fin structure 5 can be realized by a milling process or a welding process.
In addition, the fin structure 5 and the water cooling plate 4 may be connected using bolts, but not limited thereto.
In addition, a plurality of temperature sensors can be arranged on the main bearing inner ring 7 to realize real-time monitoring of the temperature of the main bearing inner ring 7, control the flow of cooling liquid and further control the cooling amount so as to achieve the purpose of temperature control. Here, the number of the temperature sensors may be four, and in this case, the temperature sensors may be uniformly distributed on the inner surface of the main bearing inner ring 7 at intervals of 90 degrees. However, the number and arrangement of the temperature sensors are not limited thereto. For example, the number of temperature sensors may be three, in which case the temperature sensors may be evenly distributed on the inner surface of the main bearing inner ring 7 at intervals of 120 degrees.
As described above, the cooling cycle process of the cooling system according to the embodiment of the present invention is as follows: a part of the cooling medium from the external radiator enters the water cooling system in the engine room, and a part of the cooling medium enters the water cooling plate 4 arranged on the main bearing inner ring 7 or the main bearing outer ring 6. The cooling medium flows through the cooling tubes 14 in the water-cooled plate 4 and the headers 15 provided at both ends of the plurality of cooling tubes 14, and takes away heat generated by the main bearing and heat of air flowing on the surfaces of the water-cooled plate 4 and the fin structure 5; then the cooling water flows out of the water cooling plate 4 and flows back to an external radiator together with the cooling water in the water cooling system in the engine room for cooling and cooling.
Referring to fig. 4 to 6, the cooling system according to an embodiment of the invention may further comprise an air line 1 located inside the main bearing inner ring 7, the air line 1 serving as an air passage between the nacelle and the hub. Furthermore, the cooling system according to an embodiment of the invention may further comprise a flow guide device for letting air in the nacelle through the air line 1 into the hub for cooling heat generating components of the hub. Here, the drainage device may be a fan, but is not limited thereto.
Specifically, the low-temperature air of the nacelle enters the hub through the air pipeline 1 under the action of the flow guide device, and the low-temperature air flows through heat-generating components (such as the pitch system 10 and other components 13) in the hub to take away heat generated by the heat-generating components, so that the heat-generating components are cooled. The pressure of the air within the hub increases due to the introduction of the low temperature air and the increase in air temperature. Under the action of the pressure difference, the air in the hub flows towards the cabin. In the process that air flows to the engine room, the air from the hub exchanges heat with the cooling medium in the water cooling plate 4, so that the temperature is reduced. Thereafter, the air flows into the nacelle and exchanges heat with heat-generating components (e.g., the transformer 9, the yaw system 11, and the converter 12) in the nacelle, thereby cooling the heat-generating components in the nacelle.
In addition, the cooling system also comprises a flow blocking device 2 arranged between the fin structure 5 and the air line 1. The flow blocking device 2 prevents air from flowing through the center of the main bearing but forces the air to flow along the surface of the flow blocking device 2 towards its edges, to the fin structures 5 and to flow into the nacelle after flowing along the surface of the fin structures 5 to exchange heat more fully with the cooling medium inside the water cooling plates 4 to improve the cooling effect.
Additionally, the cooling system may further include a heat transfer component (e.g., a heat sink) disposed between the inner surface of the main bearing inner ring 7 or the outer surface of the main bearing outer ring 6 and the water cooled plate 4. The heat conduction assembly has good heat conduction performance and good elasticity, and can be tightly attached to the heat exchanger and the bearing to realize heat conduction. Meanwhile, the heat conduction assembly can also play roles in insulation, shock absorption, sealing and the like.
Although not shown in the drawings, it will be apparent to those skilled in the art that the cooling system according to the embodiment of the present invention may also be applied to an outer rotor-type wind turbine generator set.
For the outer rotor type wind generating set, since the tower, the nacelle, the hub, the generator, the water-cooled radiator, the external radiator of the water-cooled system in the nacelle, the cooling medium transfer pipe, the air pipe, the flow guide device, the flow blocking device, and the air pipe are similar to those of the inner rotor type wind generating set described above, detailed description thereof will be omitted.
In addition, for the outer rotor type wind turbine generator system, the main bearing may include a main bearing outer ring connected to the rotor of the generator and a main bearing inner ring connected to the stator of the generator, and the hub may be connected to the main bearing outer ring to rotate the rotor of the generator through the main bearing outer ring. Therefore, for an outer rotor type wind turbine generator system, the main bearing thereof needs to satisfy the requirements that the main bearing outer ring is connected to the rotor of the generator and the main bearing inner ring is connected to the stator of the generator.
Similarly to the above-described cooling system applied to the inner rotor type wind turbine generator system, a part of the cooling medium from the external radiator enters the water cooling system in the nacelle, and a part of the cooling medium enters the water cooling plate provided on the inner ring of the main bearing or the outer ring of the main bearing. The cooling medium flows through the cooling pipes in the water-cooling plate and the headers arranged at the two ends of the plurality of cooling pipes, and takes away the heat generated by the main bearing and the heat of the air flowing on the surfaces of the water-cooling plate and the fin structure; and then the cooling water flows out of the water cooling plate and flows back to an external radiator together with the cooling water in the water cooling system in the engine room to be cooled.
In addition, when the main bearing is cooled, low-temperature air of the engine room enters the hub through the air pipeline under the action of the drainage device, flows through heat-generating components in the hub, and takes away heat generated by the heat-generating components so as to cool the heat-generating components. The pressure of the air within the hub increases due to the introduction of the low temperature air and the increase in air temperature. Under the action of the pressure difference, the air in the hub flows towards the cabin. In the process that air flows to the engine room, the air from the hub exchanges heat with the cooling medium in the water-cooling plate, so that the cooling is realized. Then, the air flows into the cabin and exchanges heat with the heat-generating components in the cabin, thereby cooling the heat-generating components in the cabin.
In addition, similarly to the above-described cooling system applied to the inner rotor type wind turbine generator set, the cooling effect can also be improved by the flow blocking device provided between the fin structure and the air pipe. The cooling principle is the same as that of the above-described flow blocking device of the inner rotor type wind turbine generator system, and therefore, it is omitted.
The cooling system provided by the embodiment of the invention uses the cooling liquid to replace air, so that the space of the device is saved, and the cooling efficiency is improved. In addition, the cooling liquid of the cooling system for cooling the inner ring of the main bearing can be provided by the existing cooling system in the engine room, so that the cost can be reduced.
According to the cooling system provided by the embodiment of the invention, the cooling effect of the cooling liquid can be fully exerted, and not only is the cooling of the inner ring of the main bearing realized, but also the cooling of hot air in the hub is realized.
According to the cooling system provided by the embodiment of the invention, the cabin cooling, the bearing cooling and the hub cooling can be integrated into one cooling system, so that the integration of a plurality of cooling systems is realized, and the equipment cost and the use space are saved.
While the present disclosure has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the following claims.

Claims (8)

1. A main bearing cooling system of a wind generating set is characterized in that a hub of the wind generating set is connected with a generator in a cabin through a main bearing, the main bearing comprises a main bearing outer ring (6) and a main bearing inner ring (7) which rotate relatively, the hub drives a rotor of the generator to rotate through the main bearing,
characterized in that the cooling system comprises:
the water-cooled radiator is arranged on the main bearing inner ring (7);
an external radiator disposed outside the nacelle;
the inlet of the water-cooling radiator is connected with the outlet of the external radiator through a cooling medium transmission pipeline, the outlet of the water-cooling radiator is connected with the inlet of the external radiator through a cooling medium transmission pipeline,
wherein the content of the first and second substances,
the water-cooled radiator is a water-cooled plate (4), a fin structure (5) is formed on the inner surface of the water-cooled plate (4), the cooling system further comprises an air pipeline (1) located on the inner side of the main bearing inner ring (7), the air pipeline (1) is used as an air channel between the engine room and the hub, the cooling system further comprises a flow guiding device, the flow guiding device enables air in the engine room to enter the hub through the air pipeline (1), the cooling system further comprises a flow blocking device (2) located between the fin structure (5) arranged on the inner surface of the water-cooled plate (4) and the air pipeline (1), and the flow blocking device (2) guides the air in the hub to the fin structure (5).
2. The cooling system according to claim 1,
the water cooling plate (4) is arranged on the inner surface of the main bearing inner ring (7), the outer surface of the water cooling plate (4) is attached to the inner surface of the main bearing inner ring (7), and the length of the water cooling plate (4) is at least one part of the inner circumference of the main bearing inner ring (7).
3. A cooling system according to claim 2, comprising a plurality of said water cooled plates (4), said plurality of water cooled plates (4) covering the entire inner circumference of said main bearing inner ring (7).
4. The cooling system according to claim 2, wherein the water-cooled plate (4) includes a plurality of cooling tubes (14) separated from each other and headers (15) provided at both ends of the plurality of cooling tubes (14).
5. A cooling system according to claim 2, further comprising a heat conducting assembly arranged between the inner surface of the main bearing inner ring (7) and the water cooled plate (4).
6. The cooling system according to claim 2, characterized in that the water-cooled plate (4) is made of an aluminium, copper or stainless steel material.
7. The cooling system according to claim 1, wherein the cooling medium flowing out of the outlet of the external radiator is divided into two cooling mediums, one cooling medium flows into the inlet of the water-cooled radiator through a cooling medium transfer line to water-cool the main bearing, the other cooling medium cools heat-generating components in the nacelle through a cooling medium transfer line, and the two cooling mediums flow into the inlet of the external radiator after cooling is completed.
8. A wind park according to any of claims 1-7, wherein the wind park comprises a cooling system.
CN201810094869.5A 2018-01-31 2018-01-31 Main bearing cooling system of wind generating set and wind generating set Active CN110094313B (en)

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CN110439762B (en) * 2019-08-16 2020-12-25 上海电气风电集团股份有限公司 Wind power generator
CN113090478A (en) * 2019-12-23 2021-07-09 新疆金风科技股份有限公司 Wind generating set, environment control system and environment control method
CN113931937A (en) * 2020-06-29 2022-01-14 新疆金风科技股份有限公司 Bearing cooling system, bearing cooling method and wind generating set
CN114267588A (en) 2020-09-16 2022-04-01 长鑫存储技术有限公司 Temperature control method and device for etching workbench, electronic device and storage medium
CN114517773A (en) * 2022-02-25 2022-05-20 哈电风能有限公司 Cooling system for main bearing of wind generating set and temperature control method for main bearing
CN114593025B (en) * 2022-03-17 2022-08-26 安徽中安绿能股份有限公司 Cooling system of shafting of wind generating set and wind generating set

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GB2400419B (en) * 2003-04-12 2006-07-19 Rolls Royce Plc Air cooled bearing
CN201908789U (en) * 2011-01-25 2011-07-27 湘电风能有限公司 Radiating device of wind-driven generator
EP2947312B1 (en) * 2014-05-23 2019-09-25 Siemens Gamesa Renewable Energy A/S Method for operating a wind turbine
CN204664186U (en) * 2015-05-26 2015-09-23 宁波达奋精工轴承有限公司 The cooperating structure of bearing and bearing support
CN205207057U (en) * 2015-12-10 2016-05-04 北京金风科创风电设备有限公司 Wind generating set cooling system and wind generating set
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CN107575492A (en) * 2017-10-24 2018-01-12 无锡民联汽车零部件有限公司 Water cooling high-efficiency heat radiating type bearing

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