CN110094313A - The base bearing cooling system and wind power generating set of wind power generating set - Google Patents

The base bearing cooling system and wind power generating set of wind power generating set Download PDF

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Publication number
CN110094313A
CN110094313A CN201810094869.5A CN201810094869A CN110094313A CN 110094313 A CN110094313 A CN 110094313A CN 201810094869 A CN201810094869 A CN 201810094869A CN 110094313 A CN110094313 A CN 110094313A
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CN
China
Prior art keywords
cooling
water
ring
base bearing
cooled plate
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Granted
Application number
CN201810094869.5A
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CN110094313B (en
Inventor
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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Priority to CN201810094869.5A priority Critical patent/CN110094313B/en
Publication of CN110094313A publication Critical patent/CN110094313A/en
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Publication of CN110094313B publication Critical patent/CN110094313B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D80/00Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/60Cooling or heating of wind motors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The present invention provides the base bearing cooling system and wind power generating set of a kind of wind power generating set, the wheel hub of the wind power generating set is connected with the generator of engine room inside by base bearing, the base bearing includes the main shaft bearing outer-ring and base bearing inner ring relatively rotated, and the wheel hub drives the rotor of the generator to rotate by the base bearing.The cooling system includes: water-cooled radiator, is arranged on the base bearing inner ring and/or the main shaft bearing outer-ring;The outside of the cabin is arranged in external heat sink;The entrance of the water-cooled radiator is connected by cooling medium transfer conduit with the outlet of the external heat sink, and the outlet of the water-cooled radiator is connected by cooling medium transfer conduit with the entrance of the external heat sink.Cooling system according to the present invention replaces air using coolant liquid, has saved device space, has improved cooling efficiency.

Description

The base bearing cooling system and wind power generating set of wind power generating set
Technical field
The present invention relates to technical field of wind power generation, and in particular, to a kind of base bearing for wind power generating set is cold But system and the wind power generating set with the cooling system.
Background technique
The equipment that wind power generating set is made of components such as blade, wheel hub, generator, cabin, pedestal, tower, bases, And blade, wheel hub, generator are all the components run in the air in height, therefore the connection between them is particularly important.Base bearing is Crucial connecting component between wheel hub and generator, and determine the critical component that can wind power generating set run well.
In general, base bearing includes base bearing inner ring and main shaft bearing outer-ring, base bearing inner ring and main shaft bearing outer-ring can be opposite In being rotated each other.Base bearing is generally rolling bearings or plain bearings.In wind power generating set, if base bearing inner ring connects It is connected to stationary part, then main shaft bearing outer-ring is connected to rotating part, and vice versa.During base bearing operation, due to the meeting that rubs Heat is generated, thus caused temperature increases the coefficient of thermal expansion that will affect base bearing, and then influences the gap of base bearing.And straight In drive wind power generation unit, the air gap of generator depends primarily on the gap of base bearing, i.e. the gap of base bearing will affect Generating efficiency.In addition, there is significant impact in the gap of base bearing to life cycle, therefore its gap should be controlled in certain range It is interior.Its reliability and service life can be improved to control its gap in certain range in temperature by controlling base bearing inner ring.
During wind power generating set operation, if the heat that base bearing generates cannot be distributed timely and effectively, that Temperature inside base bearing will be stepped up.On the one hand, excessively high temperature will lead to lubricating oil viscosity decline, with the axis of rolling For holding, the oil film thickness between rolling element and Internal and external cycle raceway reduces, and may finally make the piece surface of the inside of base bearing It is tempered, burns, or even spot corrosion and surface peeling phenomenon occurs;On the other hand, the radial dimension of the base bearing of wind power generating set Very big, inner ring, outer ring and retainer can cause biggish geometric displacement because of thermal deformation, and then generate biggish internal stress.
For existing base bearing cooling system usually using air as cooling medium, cooling efficiency is lower, occupied space compared with Greatly.
In addition, have the electronic component and mechanical part that can much generate heat in wheel hub, cabin, for example, pitch-controlled system, Yaw motor, cabin cabinet, frequency conversion tank etc..If heat cannot shed in time, the excessively high of hydraulic fluid temperature can make the viscous of hydraulic oil Degree reduces, and the drain charge amount of hydraulic pump is caused to increase, and reduces power output.In addition, excessively high temperature also will affect hose and sealing element Service life.There are also some electronic components as excessively high damage of temperature is even failed, to finally influence wind-power electricity generation The normal operation of unit.
Summary of the invention
The object of the present invention is to provide a kind of base bearing cooling systems for wind power generating set, with the cooling of such as water The heat of base bearing be effectively dissipated in medium, and the cooling of cabin, wheel hub and base bearing is integrated into a cooling system to mention High efficiency reduces cost.
According to an aspect of the present invention, a kind of base bearing cooling system of wind power generating set, the wind-force hair are provided The wheel hub of motor group is connected with the generator of engine room inside by base bearing, and the base bearing includes outside the base bearing relatively rotated Circle and base bearing inner ring, the wheel hub drive the rotor of the generator to rotate by the base bearing, which is characterized in that described Cooling system includes: water-cooled radiator, is arranged on the base bearing inner ring and/or the main shaft bearing outer-ring;External heat sink, The outside of the cabin is set;The entrance of the water-cooled radiator passes through cooling medium transfer conduit and the external heat sink Outlet be connected, the outlet of the water-cooled radiator passes through the entrance phase of cooling medium transfer conduit and the external heat sink Even.
The water-cooled radiator can be water-cooled plate, and the inner surface of the base bearing inner ring, institute is arranged in the water-cooled plate The outer surface for stating water-cooled plate is bonded with the inner surface of the base bearing inner ring, and the length of the water-cooled plate is the base bearing inner ring Interior perimeter at least part;And/or the outer surface of the main shaft bearing outer-ring, the water-cooled plate is arranged in the water-cooled plate The outer surface of the main shaft bearing outer-ring is set, the inner surface of the water-cooled plate is bonded with the outer surface of the main shaft bearing outer-ring, The length of the water-cooled plate is at least part of the outer perimeter of the main shaft bearing outer-ring.
The cooling system may include multiple water-cooled plates, and multiple water-cooled plates cover the whole of the base bearing inner ring The entire outer perimeter of a interior perimeter or the main shaft bearing outer-ring.
The water-cooled plate may include the collection of multiple cooling tubes separated from each other with the both ends that the multiple cooling tube is arranged in Pipe.
Fin structure can be formed on the inner surface of the water-cooled plate;And/or it can be formed on the outer surface of the water-cooled plate There is fin structure.
The cooling system may also include the air pipe line positioned at the inside of the base bearing inner ring, and the air pipe line is used Make the air duct between the cabin and the wheel hub.
The cooling system may also include drainage device, and the drainage device makes the air in the cabin pass through the sky Air pipe enters the wheel hub.
The cooling system may also include be located at be arranged in the water-cooled plate inner surface the fin structure with it is described Choke apparatus between air pipe line, the choke apparatus guide the air in the wheel hub into the fin structure.
The cooling system may also include termal conductor module, and the termal conductor module is arranged in the base bearing inner ring Between surface and the water-cooled plate, or it is arranged between the outer surface and the water-cooled plate of the main shaft bearing outer-ring.
Aluminium, copper or stainless steel material can be used to be made for the water-cooled plate.
According to another aspect of the present invention, a kind of wind power generating set is provided, the wind power generating set includes above-mentioned Cooling system.
The cooling system of embodiment according to the present invention replaces air using coolant liquid, has saved device space, has improved Cooling efficiency.In addition, can be provided by cooling system existing in cabin the coolant liquid of base bearing cooling system, so as to drop Low cost.
The cooling system of embodiment according to the present invention, can give full play to the cooling effect of coolant liquid, not only realize pair The cooling of base bearing also achieves the cooling to the hot-air in wheel hub.
The cooling system of embodiment according to the present invention can make cabin is cooling, bearing is cooling and wheel hub is cooling to be integrated into one A cooling system is conducive to save equipment cost and occupied space to realize the integration of multiple cooling systems.
Detailed description of the invention
Fig. 1 is the schematic diagram for showing water-cooled plate according to the present invention and fin structure.
Fig. 2 is the schematic diagram for showing cooling tube and collector in water-cooled plate.
Fig. 3 is the schematic diagram for showing the exterior contour of water-cooled plate.
Fig. 4 is the schematic diagram for showing the position of water-cooled plate and fin structure in base bearing.
Fig. 5 is the schematic diagram for showing mobility status of the air in base bearing.
Fig. 6 is the schematic diagram for showing cyclic process of the air between cabin and wheel hub.
Drawing reference numeral explanation:
1- air pipe line;2- choke apparatus;4- water-cooled plate;5- fin structure;6- main shaft bearing outer-ring;7- base bearing inner ring; 9- transformer;10- pitch-controlled system;11- yaw system;12- current transformer;13- other component
Specific embodiment
Now with reference to attached drawing a more complete description the embodiment of the present invention.
The wind power generating set of embodiment according to the present invention includes tower, cabin, the vaned wheel hub of installation, generator And base bearing, wherein cabin is located at tower top, and wheel hub is located at cabin front end, and generator is arranged in engine room inside, wheel hub and hair Motor is connected by base bearing, and base bearing includes main shaft bearing outer-ring and base bearing inner ring, and the wheel hub passes through the base bearing band Move the rotor rotation of the generator.For inner-rotor type wind power generating set, main shaft bearing outer-ring is connected to the stator of generator, Base bearing inner ring is connected to the rotor of generator, and wheel hub is connected to base bearing inner ring, to drive generator by base bearing inner ring Rotor rotation.It is main just on the contrary, main shaft bearing outer-ring is connected to the rotor of generator for outer-rotor type wind power generating set Bearing inner race is connected to the stator of generator, and wheel hub is connected to main shaft bearing outer-ring, to drive generator by main shaft bearing outer-ring Rotor rotation.
Referring to figs. 1 to Fig. 4, the base bearing cooling system of the wind power generating set of embodiment according to the present invention includes: water Cold heat sink is arranged on base bearing inner ring 7 and/or main shaft bearing outer-ring 6;The outside of cabin is arranged in external heat sink.Its In, the entrance of water-cooled radiator is connected by cooling medium transfer conduit with the outlet of external heat sink, and water-cooled radiator goes out Mouth is connected by cooling medium transfer conduit with the entrance of external heat sink, to form the circulation loop of cooling medium.
It is cooled down, and is not limited to using liquid cooling medium it should be noted that so-called " water cooling " of the invention refers to Use water as cooling medium.Of the invention moreover, although subsequent be illustrated by taking inner-rotor type wind power generating set as an example It is equally applicable to outer-rotor type wind power generating set.
It is existing for carrying out water-cooling system in the cabin of water cooling to the component of the generation heat in cabin.The present invention will be previous The air-cooled mode for base bearing be changed to water-cooling pattern, and the cooling medium of water-cooling system in cabin is utilized.That is, from cabin The cooling medium of the external heat sink outflow of interior water-cooling system is classified into two-way, all the way for the portion to the generation heat in cabin Part carries out water cooling, and another way is used to carry out water cooling to base bearing, and two-way cooling medium returns to external heat sink later.
Moreover, the setting position of water-cooled radiator is not limited to the inner surface and main shaft bearing outer-ring 6 of aftermentioned base bearing inner ring 7 Outer surface can absorb heat as long as being attached on the inner ring and/or outer ring of base bearing.
Preferably, in embodiment, water-cooled radiator can be water-cooled plate 4, and the outer surface of water-cooled plate 4 can be made into smooth surface. Water-cooled plate 4 may be provided at the inner surface of base bearing inner ring 7, and the outer surface of water-cooled plate 4 is bonded with the inner surface of base bearing inner ring 7, The length of water-cooled plate 4 is at least part of the interior perimeter of main bearing inner race 7, or in another alternative embodiment, water Cold plate 4 may be provided at the outer surface of main shaft bearing outer-ring 6, the appearance face paste of the inner surface of water-cooled plate 4 and the main shaft bearing outer-ring 6 It closes, the length of the water-cooled plate 4 is at least part of the outer perimeter of the main shaft bearing outer-ring 6.Alternatively, can be in base bearing inner ring Water-cooled plate 4 is respectively set in 7 inner surface and the outer surface of main shaft bearing outer-ring 6.
Here, the quantity of water-cooled plate 4 can be multiple, and multiple water-cooled plates 4 can cover the entire interior of base bearing inner ring 7 The entire outer perimeter of perimeter or main shaft bearing outer-ring 6.Aluminium, copper or stainless steel material can be used to be made for water-cooled plate 4.Here, stainless steel Material may include straight-chromiun stainless steel, chromium nickel stainless steel and chromic manganese nitrogen stainless steel etc., but not limited to this.Bolt can be used in water-cooled plate 4 The outer surface of inner surface or main shaft bearing outer-ring 6 fixed to base bearing inner ring 7, but not limited to this.
In addition, water-cooled plate 4 may include multiple cooling tubes 14 separated from each other and the both ends that multiple cooling tubes 14 are arranged in Collector 15, to be removed the heat of base bearing by the cooling medium flowed in water-cooled plate 4.
In addition, fin structure 5 can be formed on the inner surface of water-cooled plate 4 or outer surface.When the stream of hot air from wheel hub When crossing the surface of fin structure 5, the cooling to hot-air may be implemented, cooling medium is made to give full play to its cooling effect.Fin Structure 5 can be realized by the technique of milling, can also be realized by welding.
It is bolted in addition, can be used between fin structure 5 and water-cooled plate 4, but not limited to this.
In addition, multiple temperature sensors can be installed on base bearing inner ring 7, to realize to the temperature of base bearing inner ring 7 Real-time monitoring to control the flow of coolant liquid, and then controls amount of cooling water, to reach temperature controlled purpose.Here, temperature sensing The quantity of device can be four, and in this case, temperature sensor can be evenly distributed in base bearing according to 90 degree of interval On the inner surface of circle 7.But the quantity of temperature sensor and arrangement are without being limited thereto.For example, the quantity of temperature sensor can Think three, in this case, temperature sensor can be evenly distributed on the interior table of base bearing inner ring 7 according to 120 degree of interval On face.
As described above, the cooling cycle process of the cooling system of embodiment according to the present invention are as follows: coming from external cooling The cooling medium of device, a part enter water-cooling system in cabin, and a part, which enters, to be arranged in base bearing inner ring 7 or main shaft bearing outer-ring In water-cooled plate 4 on 6.Cooling medium passes through cooling tube 14 in water-cooled plate 4 and the both ends that multiple cooling tubes 14 are arranged in It is flowed in collector 15, takes away the heat of base bearing generation and the heat in water-cooled plate 4 and the air of the surface flow of fin structure 5 Amount;Cooling water flows out water-cooled plate 4 later, and flows back to external heat sink in cabin in water-cooling system together with cooling water, cools down And cooling.
Referring to fig. 4 to fig. 6, the cooling system of embodiment according to the present invention may also include in base bearing inner ring 7 The air pipe line 1 of side, air pipe line 1 are used as the air duct between cabin and wheel hub.In addition, embodiment according to the present invention Cooling system may also include drainage device, and drainage device makes the air in cabin enter wheel hub by air pipe line 1, to wheel hub Heat generating components cooled down.Here, drainage device can be fan, and but not limited to this.
Specifically, the Cryogenic air of cabin enters wheel hub by air pipe line 1, low temperature is empty under the action of drainage device Gas flows through the heat producing components (for example, pitch-controlled system 10 and other component 13) in wheel hub, and the heat that heat producing components generate is taken away, To realize the cooling to heat producing components.Due to the introducing of Cryogenic air and the raising of air themperature, lead to the air in wheel hub Pressure increases.Under the action of pressure difference, the air in wheel hub can be flowed into cabin.During air flows to cabin, Air from wheel hub exchanges heat with the cooling medium in water-cooled plate 4, realizes cooling.Later, air flows into cabin, with cabin Interior heat producing components (for example, transformer 9, yaw system 11, current transformer 12) carry out heat exchange, realize the heat producing components in cabin Cooling.
In addition, cooling system further includes the choke apparatus 2 being arranged between fin structure 5 and air pipe line 1.Choke apparatus 2 prevent air from flowing through from the center of base bearing, but force air along 2 surface of choke apparatus to its edge flowing, flow to At fin structure 5, flow into cabin after the surface flow along fin structure 5, with more fully with the cooling in water-cooled plate 4 Medium exchanges heat, to improve cooling effect.
In addition, cooling system may also include the inner surface that base bearing inner ring 7 is set or main shaft bearing outer-ring 6 outer surface and Termal conductor module (for example, heating power patch) between water-cooled plate 4.Termal conductor module has good heating conduction and good bullet Property, and can be closely bonded with heat exchanger and bearing, to realize heat transfer.Meanwhile termal conductor module can also play insulation, The effects of damping, sealing.
Although it is each it is attached be not shown in the figure, to those skilled in the art it will be apparent that, reality according to the present invention The cooling system for applying example also can be applied to outer-rotor type wind power generating set.
For outer-rotor type wind power generating set, due to tower, cabin, wheel hub, generator, water-cooled radiator, machine The external heat sink of water-cooling system, cooling medium transfer conduit, air pipe line, drainage device, choke apparatus, air pipe line in cabin It is similar with above-mentioned inner-rotor type wind power generating set, therefore its detailed description will be omitted.
In addition, for outer-rotor type wind power generating set, base bearing may include main shaft bearing outer-ring and base bearing inner ring, Main shaft bearing outer-ring is connected to the rotor of generator, and base bearing inner ring is connected to the stator of generator, and wheel hub is connected to outside base bearing Circle, to drive the rotor rotation of generator by main shaft bearing outer-ring.Therefore, for outer-rotor type wind power generating set, Base bearing, which needs to meet the stator that main shaft bearing outer-ring is connected to the rotor of generator and base bearing inner ring is connected to generator, to be wanted It asks.
It is similar with the above-mentioned cooling system of inner-rotor type wind power generating set is applied to, cooling Jie from external heat sink Matter, a part enter water-cooling system in cabin, and a part enters the water-cooled plate being arranged on base bearing inner ring or main shaft bearing outer-ring It is interior.Cooling medium takes away master by flowing in the cooling tube in water-cooled plate and the collector at the both ends that multiple cooling tubes are arranged in The heat that bearing generates and the heat in water-cooled plate and the air of the surface flow of fin structure;Cooling water flows out water cooling later Plate, and flows back to external heat sink, cooled down and is cooled down together with cooling water in water-cooling system in cabin.
In addition, the Cryogenic air of cabin passes through sky under the action of drainage device while cooling down to base bearing Air pipe enters wheel hub, and Cryogenic air flows through the heat producing components in wheel hub, and the heat that heat producing components generate is taken away, with realization pair The cooling of heat producing components.Due to the introducing of Cryogenic air and the raising of air themperature, the pressure of the air in wheel hub is caused to increase. Under the action of pressure difference, the air in wheel hub can be flowed into cabin.During air flows to cabin, from wheel hub Air exchanges heat with the cooling medium in water-cooled plate, realizes cooling.Later, air flows into the heat unit in cabin, with cabin Part carries out heat exchange, realizes the cooling of the heat producing components in cabin.
In addition, it is similar with the above-mentioned cooling system of inner-rotor type wind power generating set is applied to, it can also be by being arranged in wing Choke apparatus between chip architecture and air pipe line improves cooling effect.Its cooling principle and inner-rotor type wind power generating set Above-mentioned choke apparatus is identical, therefore omits.
The cooling system of embodiment according to the present invention replaces air using coolant liquid, has saved device space, has improved Cooling efficiency.In addition, the coolant liquid of the cooling system cooling to base bearing inner ring can be mentioned by cooling system existing in cabin For so as to reduce cost.
The cooling system of embodiment according to the present invention, can give full play to the cooling effect of coolant liquid, not only realize pair The cooling of base bearing inner ring also achieves the cooling to the hot-air in wheel hub.
The cooling system of embodiment according to the present invention can make cabin is cooling, bearing is cooling and wheel hub is cooling to be integrated into one A cooling system is conducive to save equipment cost and use space to realize the integration of multiple cooling systems.
Although specifically illustrating and describing the disclosure referring to the exemplary embodiment of the disclosure, this field is common It is to be understood by the skilled artisans that without departing from the spirit and scope of this disclosure as defined by the following claims, it can be to it The various changes of carry out form and details.

Claims (11)

1. a kind of base bearing cooling system of wind power generating set, the power generation of the wheel hub and engine room inside of the wind power generating set Machine is connected by base bearing, and the base bearing includes the main shaft bearing outer-ring (6) and base bearing inner ring (7) relatively rotated, the wheel Hub drives the rotor of the generator to rotate by the base bearing,
It is characterized in that, the cooling system includes:
Water-cooled radiator is arranged on the base bearing inner ring (7) and/or the main shaft bearing outer-ring (6);
The outside of the cabin is arranged in external heat sink;
The entrance of the water-cooled radiator is connected by cooling medium transfer conduit with the outlet of the external heat sink, the water The outlet of cold heat sink is connected by cooling medium transfer conduit with the entrance of the external heat sink.
2. cooling system according to claim 1, which is characterized in that the water-cooled radiator is water-cooled plate (4),
The water-cooled plate (4) setting the base bearing inner ring (7) inner surface, the outer surface of the water-cooled plate (4) with it is described The inner surface of base bearing inner ring (7) is bonded, the length of the water-cooled plate (4) be the interior perimeter of the base bearing inner ring (7) extremely Few a part;And/or water-cooled plate (4) setting is in the outer surface of the main shaft bearing outer-ring (6), water-cooled plate (4) setting In the outer surface of the main shaft bearing outer-ring (6), the outer surface of the inner surface of the water-cooled plate (4) and the main shaft bearing outer-ring (6) Fitting, the length of the water-cooled plate (4) are at least part of the outer perimeter of the main shaft bearing outer-ring (6).
3. cooling system according to claim 2, which is characterized in that including multiple water-cooled plates (4), multiple water Cold plate (4) covers the entire interior perimeter of the base bearing inner ring (7) or the entire outer perimeter of the main shaft bearing outer-ring (6).
4. cooling system according to claim 2, which is characterized in that the water-cooled plate (4) includes separated from each other multiple Cooling tube (14) and setting the both ends of the multiple cooling tube (14) collector (15).
5. cooling system according to claim 2, which is characterized in that be formed with wing on the inner surface of the water-cooled plate (4) Chip architecture (5);And/or
Fin structure (5) are formed on the outer surface of the water-cooled plate (4).
6. cooling system according to claim 5, which is characterized in that the cooling system further includes being located at the base bearing The air pipe line (1) of the inside of inner ring (7), it is logical that the air pipe line (1) is used as the air between the cabin and the wheel hub Road.
7. cooling system according to claim 6, which is characterized in that the cooling system further includes drainage device, described Drainage device makes the air in the cabin enter the wheel hub by the air pipe line (1).
8. cooling system according to claim 6, which is characterized in that the cooling system further includes being located to be arranged described Choke apparatus (2) between the fin structure (5) and the air pipe line (1) of the inner surface of water-cooled plate (4), the choked flow Device (2) guides the air in the wheel hub into the fin structure (5).
9. cooling system according to claim 2, which is characterized in that the cooling system further includes termal conductor module, institute It states termal conductor module to be arranged between the inner surface and the water-cooled plate (4) of the base bearing inner ring (7), or is arranged in the master Between the outer surface and the water-cooled plate (4) of bearing outer ring (6).
10. cooling system according to claim 2, which is characterized in that the water-cooled plate (4) uses aluminium, copper or stainless steel Material is made.
11. a kind of wind power generating set, which is characterized in that the wind power generating set includes such as appointing in claims 1 to 10 Cooling system described in one.
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

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