CN107842472A - Cooling system for shafting of wind driven generator and wind driven generator set - Google Patents
Cooling system for shafting of wind driven generator and wind driven generator set Download PDFInfo
- Publication number
- CN107842472A CN107842472A CN201711276462.6A CN201711276462A CN107842472A CN 107842472 A CN107842472 A CN 107842472A CN 201711276462 A CN201711276462 A CN 201711276462A CN 107842472 A CN107842472 A CN 107842472A
- Authority
- CN
- China
- Prior art keywords
- air
- cooling system
- wind
- box
- rotary shaft
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 47
- 239000000758 substrate Substances 0.000 claims description 19
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract 1
- 239000000306 component Substances 0.000 description 24
- 239000002826 coolant Substances 0.000 description 13
- 238000012546 transfer Methods 0.000 description 11
- 238000005057 refrigeration Methods 0.000 description 10
- 239000004519 grease Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000005461 lubrication Methods 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 238000001574 biopsy Methods 0.000 description 2
- 108010066278 cabin-4 Proteins 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention provides a cooling system for a shafting of a wind driven generator and a wind driven generator set, wherein the cooling system comprises: a cool air supply unit; the air supply box is coaxially fixed on the fixed shaft; the air return box is coaxially fixed on the fixed shaft; and an annular heat radiating member fixedly installed on an inner surface of the rotating shaft, wherein the cold air from the cold air supply unit is supplied to the annular heat radiating member through the blowing case, and the air heat-exchanged with the annular heat radiating member flows back into the cold air supply unit through the return case. By arranging the cooling system, the temperature of the shafting of the wind generating set can be reduced to a reasonable operation range, so that the service life of the shafting is ensured, and the operation reliability of the wind generating set is ensured.
Description
Technical field
The present invention relates to wind power generation field, more particularly to a kind of cooling system of shafting for wind-driven generator and
Wind power generating set including the cooling system.
Background technology
Wind power generating set uses permanent magnet direct-driving aerogenerator mostly.Such as Fig. 1 and Fig. 2, (Fig. 1 is wind power generating set
Structural representation, Fig. 2 are the sectional views of Fig. 1 I parts) shown in, the wind power generating set with permanent magnet direct-driving aerogenerator
Mainly include：Blade 1, wheel hub 2, generator subsystems 3, cabin 4 and pylon 5.Generator subsystems 3 mainly include：Permanent magnetism is straight
Driving type aerogenerator 6, dead axle 7, rotary shaft 9, base bearing.Base bearing includes bearing inner race 10, bearing roller 8 and bearing outer ring
11, bearing inner race 10 is connected to rotary shaft 9, and bearing outer ring 11 is connected to dead axle 7, because blade 1, wheel hub 2 and rotary shaft 9 connect
Be connected together, therefore, in the presence of outside wind load, by the bearing roller 8 of base bearing, can be achieved rotary shaft 9 and dead axle 7 it
Between relative motion.Therefore base bearing is one of core component of wind-driven generator, its Life Relation to whole typhoon power generator
In the life-span of group, once it fail, and replacing is extremely difficult, and somewhat expensive.
To ensure the work of base bearing, it is necessary to be lubricated to base bearing, the lubricating system of base bearing mainly has two at present
Kind：Grease lubrication and oil lubrication.For rolling bearing, grease lubrication grease lubrication is usually taken because with profit
Oil lubrication is compared, and grease lubrication device is simpler and lubricating grease is not easy to leak, and is easy to care and maintenance of bearing etc..
However, wind power generating set may be installed on coastal, gobi and grassland ecological, various regions weather conditions are widely different,
If the caused heat in base bearing can not effectively dissipate, adverse circumstances (such as high temperature ring residing for additional wind power generating set
Border), it may continue to work at high temperature inside base bearing, the life-span of lubricating grease can reduce rapidly as temperature raises, thus
The lubrication of lubricating grease is caused to fail.
Because bearing roller 8, bearing inner race 10 and bearing outer ring 11 are acted on by extraneous wind load and bear wind-driven generator
The group weight of itself, therefore when bearing inner race 10 and bearing outer ring 11 rotate against, larger moment of friction can be produced, and then
Bearing inner is caused to produce larger heat.If caused heat produced can not be gone out in real time, bearing can be caused to have higher
Temperature, and higher temperature can cause oil body to decline, and then influence bearing inner race 10, the bearing roller 8 of bearing
Lubricating oil film between bearing outer ring 11 is established, and thus there may be dry friction, causes zero inside transmission system
The temperature of part steeply rises, and the working gap of base bearing can exceed rational working range because of thermal expansion, in some instances it may even be possible to occur
" seizing " phenomenon.It follows that prolonged hot operation can cause serious vicious circle, and have a strong impact on the longevity of bearing
Life, causes bearing failure, can not meet that wind power generating set complete machine service life requires for 20~25 years.
In fact, not only base bearing, there is also Similar Problems for the bearing of other shaftings.The numerous failure mode of bearing returns root
It is all caused because of " heat " to tie bottom, moreover, incrementally increasing with wind turbine power generation power, heat dissipation problem not only influences
The life-span of lubricating grease, also the miscellaneous part to wind power generating set threaten (e.g., internal part may melt because of high temperature),
Therefore receive more and more attention.
The content of the invention
It is an object of the invention to provide a kind of cooling system of the base bearing for wind-driven generator, to effectively dissipate master
The heat of bearing.
According to an aspect of the present invention, there is provided a kind of cooling system of shafting for wind power generating set, the shafting
Including dead axle, rotary shaft and the bearing being arranged between the dead axle and rotary shaft, the bearing includes bearing outer ring, bearing
Roller and bearing inner race, the bearing outer ring are connected to the dead axle, and the bearing inner race is connected to the rotary shaft, described cold
But system may include：Cold air feeding unit；Wind pushing box, it is coaxially attached to the dead axle on the dead axle；Air-intaking box, with
The dead axle is coaxially attached on the dead axle；And circular radiating component, it is fixedly mounted in the interior table of the rotary shaft
On face, wherein, the cold air from the cold air feeding unit is supplied to the circular radiating group by the wind pushing box
Part, the air that heat exchange has been carried out with the circular radiating component flow back into the cold air feeding unit by the air-intaking box
In.Annular radiating subassembly is installed by the inner surface in rotary shaft, increases heat transfer area, and then increase heat exchange；Pass through setting
The wind pushing box of supply cold air effectively can radiate to circular radiating component；By setting the air-intaking box of recovery air,
Air is reclaimed, improves the utilization rate of cold air, reduces the live load of cold air feeding unit.
The circular radiating component may include the circumferencial direction along the rotary shaft according to the multiple of arranged at predetermined intervals
Heat-sink unit, each heat-sink unit include radiating module and surround at least one of wind scooper of the radiating module.Pass through
Wind scooper is set, can effectively guide the cold air blowed from wind pushing box and the air that air-intaking box will be recovered to.
The wind pushing box and the air-intaking box are formed as annular box shape, each wind scooper have air intake passage and
Air-out passage, the air intake passage of each wind scooper are rotatably connected to the ring exit of the wind pushing box, each wind scooper
Air-out passage is rotatably connected to the annular entry of the air-intaking box, so as to realize between wind scooper and wind pushing box and air-intaking box
Be association of activity and inertia.
Each radiating module may include substrate, the heat pipe in the substrate and be plugged on the heat pipe
Radiating fin, so as to strengthen the exchange capability of heat of circular radiating component and extraneous air.
The heat pipe may include：First extension, from the substrate extending radially inwardly along the rotary shaft；The
Two extensions, from the end of first extension along the axially extending of the rotary shaft；3rd extension, from institute
End the extending radially inwardly along the rotary shaft of the second extension is stated, wherein, the radiating fin is plugged on described
On 3rd extension.By setting heat pipe and radiating fin, heat can be more effectively transferred into air-flow, improve radiating
Efficiency.
The wind scooper can only surround the radiating fin, be carried out more so as to the heat pipe section of the radiating fin for grafting
Radiate well, so as to promote the kind of refrigeration cycle of the cooling medium in whole heat pipe, improve heat exchange efficiency, and then base bearing is carried out
More effectively radiate.
The cooling system may also include the support frame that the circular radiating component is fixed to the rotary shaft, in order to
The installation of radiating subassembly.
Support frame as described above may include multiple butt rectangular pyramid skeletons and will be adjacent in the multiple butt rectangular pyramid skeleton
The connecting rod that connects of two butt rectangular pyramid skeletons, wherein, each setting in the multiple butt rectangular pyramid skeleton
Between adjacent two heat-sink unit in the multiple heat-sink unit, so as to be fixed by support frame structure intensity itself
Circular radiating component, circular radiating component is set to be arranged on the inner surface of rotary shaft with attaching.
The butt rectangular pyramid skeleton may also include the extending bracket for being respectively facing wind pushing box and air-intaking box extension, to prop up
Support air intake passage and air-out passage.
The cold air feeding unit may include：Condenser, the condenser are arranged in the cabin of wind power generating set；
Air-treatment case, the air-treatment case include evaporator, and the evaporator passes through cooling medium pipeline and the condenser shape
Into circulation loop, the refrigeration system formed by condenser and evaporator is cooled down to the air in air-treatment case, realized
The supply of cold air.
The air-treatment case may also include：First air intake vent, suck extraneous air；Air outlet, connect with the wind pushing box
It is logical；Second air intake vent, connected with the air-intaking box, and fan is provided near the air outlet, so as to the flowing for air
Power is provided.
According to another aspect of the present invention, there is provided a kind of wind power generating set, the wind power generating set may include as above
Described cooling system.
Cooling system according to the present invention is to be added after the completion of wind power generating set design according to its space layout,
Miscellaneous part in wind power generating set realizes cooling system reliable installation and operation in the case of running is not influenceed.
According to the cooling system of the present invention, by setting annular and entering around wind scooper on air supply duct and air-intaking box
The outlet of wind passage and air-out passage and entrance, rotating against between wind scooper and the wind pushing box and air-intaking box of fixation is realized,
And by setting sealing ring between them, it can avoid that air leakage occurs during air-supply and return air and then influence the effect that radiates
Fruit, therefore the waste of energy can be avoided while the load of refrigeration system is reduced.
According to heat pipe is provided with the circular radiating component of the cooling system of the present invention, heat pipe structure is simple, heat transfer efficient,
It is arranged on the rotating shaft as evaporative type cooler, is completed by making cooling matrix in heat pipe by evaporation and capillarity
Circulation, by the heat transfer in rotary shaft into air-flow, improves radiating efficiency.
By setting the cooling system according to the present invention, the temperature of base bearing can be reduced in rational range of operation,
So that it is guaranteed that the service life of base bearing and ensuring wind power generating set reliability of operation.
Brief description of the drawings
Fig. 1 is the structural representation of wind power generating set；
Fig. 2 is the sectional view of Fig. 1 I parts；
Fig. 3 is the wind power generating set for including the cooling system according to an embodiment of the invention for wind-driven generator
Biopsy cavity marker devices decomposition texture schematic diagram；
Fig. 4 is the partial structural diagram of cooling system according to an embodiment of the invention；
Fig. 5 is the internal structure signal for the air-treatment case according to an embodiment of the invention observed from another angle
Figure；
Fig. 6 is the structural representation of the heat-sink unit according to an embodiment of the invention covered with wind scooper；
Fig. 7 is the structural representation that single heat-sink unit according to an embodiment of the invention is provided with wind scooper；
Fig. 8 is the internal structure schematic diagram of air-treatment case according to an embodiment of the invention
Fig. 9 is the structural representation of support frame according to an embodiment of the invention.
Drawing reference numeral explanation：
1- blades；2- wheel hubs；3- generator subsystems；4- cabins；5- pylons；6- permanent magnet direct-driving aerogenerators；7- determines
Axle；8- bearing rollers；9- rotary shafts；10- bearing inner races；11- bearing outer rings；12- condensers；13- air-treatment cases；13a- is cold
But medium pipeline；14- air-intaking box；The air intake vents of 14a- first；14b- air outlets；The air intake vents of 14c- second；15- wind pushing box；16-
Radiating subassembly；17- support frames；17a- skeletons；18- wind scoopers；19- substrates；10- heat pipes；The extensions of 20a- first；20b-
Second extension；The extensions of 20c- the 3rd；21- air intake passages；22- air-out passages；23- evaporators；26- radiating fins；
150- radiating modules；160- heat-sink units；174- extending brackets；175- butt rectangular pyramid skeletons.
Embodiment
Embodiments of the invention are specifically described below in conjunction with accompanying drawing.
Hereinafter, will be described using the base bearing of wind power generating set as cooling object, it is to be noted that, this
Invention not limited to this, other shaftings of wind power generating set are applied also for according to the cooling system of exemplary embodiment.In addition,
The description as described in direction be the shape using base bearing as benchmark, for example, such as " inner side ", " outside " and " inner surface " and
The description of " inner surface " etc. is the radial direction based on base bearing, specifically, apart from the central axis of base bearing it is near and towards
The face of central axis is " inner side " or " inner surface ", otherwise is " outside " or " outer surface ".
Fig. 3 is the wind power generating set for including the cooling system according to an embodiment of the invention for wind-driven generator
Biopsy cavity marker devices decomposition texture schematic diagram；Fig. 4 is the partial structural diagram of cooling system according to an embodiment of the invention；Fig. 5
It is the internal structure schematic diagram for the air-treatment case according to an embodiment of the invention observed from another angle；
Fig. 6 is the structural representation of heat-sink unit according to an embodiment of the invention；Fig. 7 is according to an embodiment of the invention
Single heat-sink unit the structural representation of wind scooper is installed；Fig. 8 is air-treatment case according to an embodiment of the invention
Internal structure schematic diagram；Fig. 9 is the structural representation of support frame according to an embodiment of the invention.
As shown in Figures 3 to 5, cooling system according to an embodiment of the invention includes：Cold air feeding unit, produce cold
Air；Wind pushing box 15, it is coaxially attached to dead axle 7 on dead axle 7；Air-intaking box 14, it is coaxially attached to dead axle 7 on dead axle 7；
Circular radiating component 16, it is fixedly mounted on the inner surface of rotary shaft 9.Cold air from cold air feeding unit can lead to
Cross wind pushing box 15 and be supplied to circular radiating component 16, the air that heat exchange has been carried out with circular radiating component 16 passes through air-intaking box
14 flow back into the cold air feeding unit.According to an embodiment of the invention, by the rotation combined with bearing inner race 10
The inner surface of axle 9 installs annular radiating subassembly 16, increases heat transfer area, and then increase heat exchange.In addition, by setting supply cold
The wind pushing box 15 of air and the air-intaking box 14 of recovery air, effectively can be radiated and be passed through to circular radiating component 16
Air is reclaimed, improves the utilization rate of cold air, reduces the live load of cold air feeding unit.
However, a difficult point for implementing embodiments of the invention is：How being association of activity and inertia cooling system inside is solved
The problem of.Because bearing inner race 10 is rotary part, so as to connected rotary shaft 9, circular radiating component 16 and wind scooper
18 be also rotary part, therefore how to realize that the air-supply from the static lateral rotary side of rotary shaft 9 of dead axle 7 turns into and implement the reality
Apply the key problem of example.This will be hereafter described in detail.
As shown in fig. 6, circular radiating component 16 may include to dissipate according to predetermined space is multiple along the circumferencial direction of rotary shaft 9
Hot cell 160.As shown in fig. 7, each heat-sink unit 160 includes radiating module 150 and surrounds the radiating module 150 extremely
At least part of wind scooper 18.
Wind pushing box 15 and air-intaking box 14 can be all formed as annular box shape.In addition, each wind scooper 18 can have air intake
Passage 21 and air-out passage 22, the air intake passage 21 of each wind scooper 18 are rotatably connected to the ring exit of wind pushing box 15
(not shown), the air-out passage 22 of each wind scooper 18 are rotatably connected to the annular entry (not shown) of air-intaking box 14.
Specifically, the air intake passage 21 of wind scooper 18 and air-out passage 22 may be formed at wind scooper 18 and face wind pushing box 15
On the side surface of (that is, in face of air-intaking box 14), and the air intake passage 21 of all wind scoopers 18 is arranged in the circle coaxial with dead axle 7
Ring-shaped, the air-out passage 22 of all wind scoopers 18 are arranged in and annulus that is coaxial with dead axle 7 and being arranged with air intake passage 21
The different toroidal of diameter.
Wind pushing box 15 is forming outlet (not shown) on the surface of wind scooper 18, the outlet of wind pushing box 15 have with it is complete
The corresponding annular shape of annulus that the air intake passage 21 of portion's wind scooper 18 is collectively forming, air-intaking box 14 is in face of wind scooper 18
Entrance (not shown) is formed on surface, the entrance of air-intaking box 14 has what the air-out passage 22 with whole wind scoopers 18 was collectively forming
The corresponding annular shape of annulus.
As described above, after circular radiating component 16 is arranged on the inner surface of rotary shaft 9, the air intake of wind scooper 18
Passage 21 and air-out passage 22 are rotated with rotary shaft 9, and wind pushing box 15 and air-intaking box 14 are fixedly mounted on dead axle 7.It is logical
Setting said structure is crossed, the rotatable UNICOM between wind scooper 18 and wind pushing box 15 and air-intaking box 14 can be realized.
Further, it is preferable to the sealing ring (not shown) of whole circle is set in the outlet of the entrance and wind pushing box 15 of air-intaking box 14,
During the rotating against of wind scooper 18 and wind pushing box 15 and air-intaking box 14, to prevent due to foozle and rotating deviation (example
Such as, because the injustice of ring surface causes caused deviation in the axial direction) etc. produce gap and make air leakage, influence radiating
Effect, while also act the effect of energy-conservation.Although it should be noted herein that air intake passage 21 and air-out passage are shown in accompanying drawing
22 link together, but air intake passage 21 and air-out passage 22 can be separated from each other in radial directions, with respectively in air-intaking box 14
Entrance and wind pushing box 15 outlet on set around their single sealing ring.As described above, wind pushing box 15 and air-intaking box
14 are coaxially disposed with dead axle 7, therefore, as shown in figure 4, wind pushing box 15 and air-intaking box 14 are settable on the same plane.This
Sample, wind pushing box 15 and air-intaking box 14 can be installed on dead axle 7 by mounting bracket 25 simultaneously, so as to effectively utilize in base bearing
Space.
Although the foregoing describe wind pushing box 15 and air-intaking box 14 be annular box shape embodiment, however, such as Fig. 4 institutes
State, wind pushing box 15 and air-intaking box 14 can also have discontinuous annular box shape, and wind pushing box 15 and air-intaking box 14 are divided respectively
Two parts are divided into, are set between these two portions in the mounting bracket 25 of beam shape, so that wind pushing box 15 and air-intaking box 14
Every part ends contact mounting bracket 25 in a circumferential direction and be fixed in mounting bracket 25.In Fig. 4 embodiment
In the case of, it is all connected to cold air feeding unit on every part of wind pushing box 15 and air-intaking box 14.
In addition, as shown in fig. 6, in order to strengthen the exchange capability of heat of circular radiating component 16 and extraneous air, each radiating is single
Member 160 may include substrate 19, the heat pipe 20 in substrate 19 and be plugged on heat pipe 20 positioned at the portion in the outside of substrate 19
Multiple radiating fins 26 on point, to increase heat transfer and thermal convection current ability by setting heat pipe 20 with radiating fin 26.
There is the cooling medium of certain boiling point in heat pipe 20, by the heat conduction of substrate 19, the bottom of heat pipe 20 absorbs heat,
The evaporation of internal cooling medium is changed into gaseous state, and gaseous cooling medium starts to cool under the thermolysis of radiating fin 26, gaseous state
Liquid is condensed into, heat pipe bottom is again returned to by capillarity, so as to realize heat transfer cycle to be cooled down to rotary shaft 9.
For multiple substrates 19 along the circumferential direction on the inner surface of rotary shaft 9, multiple substrates 19 can be processed into difference
Profile to adapt to the resemblance of the heat-delivery surface of rotary shaft 9, so as to the lost offer of heat passed out for base bearing
The approach of one active transfer.Therefore, as shown in figure 5, each substrate 19 can have a square plate shape of bending, and each substrate 19
Curvature is identical with the curvature of the inner surface of rotary shaft 9.In addition, heat pipe 20 may include：First extension 20a, from the edge of substrate 19
Extending radially inwardly for rotary shaft 9；Second extension 20b, from the first extension 20a end along rotary shaft 9
It is axially extending；3rd extension 20c, from the second extension 20b end radially-inwardly prolonging along the rotary shaft 9
Stretch, radiating fin 26 is pluggable in the 3rd extension 20c.In addition, radiating fin 26 can be located at along the radial direction of base bearing
The inner side of substrate 19, to realize the compactedness of structure while be convenient for installing.
As shown in fig. 7, wind scooper 18 can only surround radiating fin 26, the so as to the radiating fin 26 for grafting the 3rd prolongs
Extending portion divides 20c preferably to be radiated, and so as to promote the kind of refrigeration cycle of the cooling medium in whole heat pipe 20, improves heat exchange effect
Rate, so as to more effectively be radiated to base bearing.In addition, by making wind scooper 18 only surround radiating fin 26, can also be easy to
Circular radiating component 16 is installed by support frame 17 which will be described.
As shown in figure 5, support frame 17 may include multiple butt rectangular pyramid skeletons 175 (see Fig. 9) and by the multiple section
The connecting rod (not shown) that two adjacent butt rectangular pyramid skeletons 175 connect in head rectangular pyramid skeleton 175.Each butt
Rectangular pyramid skeleton 175 is arranged between adjacent two heat-sink unit 160 in multiple heat-sink units 160, then by multiple
Connecting rod connects two adjacent butt rectangular pyramid skeletons 175, and so, multiple butt rectangular pyramid skeletons 175 can be each other
Connection forms the support frame 17 of annular.Support frame 17 can carry out stationary annular radiating subassembly 16 by structure intensity itself, make ring
Shape radiating subassembly attaches ground and is arranged on the inner surface of rotary shaft 9.
In addition, as described above, by making wind scooper 18 only surround radiating fin 26, adjacent cut is being connected using connecting rod
During head rectangular pyramid skeleton 175, a connecting rod in multiple connecting rods may pass through the space between substrate 19 and wind scooper 18,
So as to by all connecting rods in the space substrate 19 be made to be attached on the surface of moving axis, so as to realize as above institute
The installation for the circular radiating component 16 stated.
In addition, as shown in figure 9, butt rectangular pyramid skeleton 175 can be spliced by multiple skeleton 17a, and led for cooperation
The air intake passage 21 of fan housing and the shape of air-out passage 22, each butt rectangular pyramid skeleton 175 may also include extending bracket 174,
So as to support air intake passage 21 and air-out passage 22.
However, the shape not limited to this of support frame 17, as long as twelve Earthly Branches can be consolidated between two skeletons 175 that can be adjacent
One heat-sink unit 160 of support on the inner surface of rotary shaft 9 and each other can so that circular radiating component to be attached may be used
Any attachment structure releasably connected is all feasible.
Further, since the area for only relying on the heat exchange surface of increase base bearing inner ring 10 is likely difficult to meet whole radiatings
It is required that especially high temperature, high load capacity working condition under.Thus need to prepare the cold sky of low temperature by refrigeration system
Gas, as described above, cold air is delivered into circular radiating component 16 by wind pushing box 15, increase circular radiating component 16 and surrounding are empty
The heat transfer temperature difference and the coefficient of heat transfer of gas, realize the ventilation and heat purpose of base bearing.Refrigeration system will be described in detail below.
Cold air feeding unit includes refrigeration system as described above, and specifically, cold air feeding unit may include：Condensation
Device 12, in the cabin 4 of wind power generating set, cooling medium cools in condenser 12, releases heat, is changed into liquid；
Air-treatment case 13, evaporator 23 is provided with, evaporator 23 is connected by cooling medium pipeline 13a with condenser 12, cold
Cooling medium in condenser 12 flows into evaporator 23 after throttling, and so as to form refrigeration system, cooling medium is in evaporator 23
Middle evaporation, takes away atmospheric heat, and the air in air-treatment case 13 is cooled down, and the cooling medium of evaporation is through cooling medium pipe
Road 13a again flows into condenser 12, is circulated.In addition, caused cold air is supplied to air-supply in air-treatment case 13
Case 15, it is then blown up being sent to circular radiating component 16.
As shown in figure 8, air-treatment case 13 also includes：First air intake vent 14a, for sucking extraneous air；Air outlet
14b, connected with wind pushing box 15；Second air intake vent 14c, is connected with air-intaking box 14, to suck the air flowed out from air-intaking box 14.Its
In, air outlet 14b nearby may be provided with fan (in air outlet 14b).Further, since gas is from large space to small spatial flow
Can have a unstability and inhomogeneities, thus the cold air flowed out from air-treatment case 13 in the presence of fan through relatively large
Necessarily there is also this problem when the wind pushing box 15 in space delivers to relatively narrow and small 18 inside of wind scooper in space, therefore in order to more preferable
Make cold air and radiating fin 26 carry out sufficient heat exchange, take away more heats, can also be set in wind scooper 18 steady
Pressure device.
As described above, air-treatment case 13 is the place of refrigeration system and air exchange heat.Air is in air-treatment case
By evaporator 23 and cooling medium heat-shift in 13, temperature reduction, delivered to by air outlet 14b by connecting pipe quiet
In wind pushing box 15 only, pressed from static wind pushing box 15 by the fan in air outlet 14b and send the gas of cooling
To the air intake passage 21 of the wind scooper 18 of rotation, into wind scooper 18 Cryogenic air after the voltage stabilizing of stable-pressure device with annular
The radiating fin 26 of radiating subassembly 16 carries out sufficient heat exchange, then flows to the air-out passage 22 of wind scooper 18, by with its
The annular entry for the air-intaking box 14 being rotatably engaged flows back into air-treatment case 13.Because return air temperature is compared with surrounding air
Temperature is still relatively low, therefore is reclaimed equivalent to cold, reduces the load of refrigeration system.
Cooling system according to the present invention is to be added after the completion of wind power generating set design according to its space layout,
Miscellaneous part in wind power generating set realizes cooling system reliable installation and operation in the case of running is not influenceed.
According to the cooling system of the present invention, by setting annular on wind pushing box and air-intaking box and around the air intake of wind scooper
The outlet of passage and air-out passage and entrance, rotating against between wind scooper and the wind pushing box and return air duct of fixation is realized,
And by setting sealing ring between them, it can avoid that air leakage occurs during air-supply and return air and then influence the effect that radiates
Fruit, therefore the waste of energy can be avoided.
According to heat pipe is provided with the circular radiating component of the cooling system of the present invention, heat pipe structure is simple, heat transfer efficient,
It is arranged on the rotating shaft as evaporative type cooler, is completed by making cooling matrix in heat pipe by evaporation and capillarity
Circulation, by the heat transfer in rotary shaft into air-flow, improves radiating efficiency.
By setting the cooling system according to the present invention, the temperature of base bearing can be reduced in rational range of operation,
So that it is guaranteed that the service life of base bearing and ensuring wind power generating set reliability of operation.
Although the exemplary embodiment of the present invention is described in detail above, it will be understood by those skilled in the art that
Without departing from the principles and spirit of the present invention, various modifications and variations can be made to embodiments of the invention.But
It should be appreciated that in the opinion of those skilled in the art, these modifications and variations will fall into claim limited it is of the invention
In the range of.
Claims (12)
1. a kind of cooling system of shafting for wind power generating set, the shafting include dead axle (7), rotary shaft (9) and
The bearing being arranged between the dead axle (7) and rotary shaft (9), the bearing include bearing outer ring (11), bearing roller (8) and
Bearing inner race (10), the bearing outer ring (11) are connected to the dead axle (7), and the bearing inner race (10) is connected to the rotation
Axle (9), it is characterised in that the cooling system includes：
Cold air feeding unit；
Wind pushing box (15), it is coaxially attached to the dead axle (7) on the dead axle (7)；
Air-intaking box (14), it is coaxially attached to the dead axle (7) on the dead axle (7)；And
Circular radiating component (16), is fixedly mounted on the inner surface of the rotary shaft (9),
Wherein, the cold air from the cold air feeding unit is supplied to the circular radiating by the wind pushing box (15)
Component (16), with the circular radiating component (16) carried out the air of heat exchange flow back into by the air-intaking box (14) it is described
In cold air feeding unit.
2. cooling system as claimed in claim 1, it is characterised in that the circular radiating component (16) is included along described turn
The circumferencial direction of moving axis (9) according to arranged at predetermined intervals multiple heat-sink units (160), wherein, each heat-sink unit (160) bag
Include radiating module (150) and surround at least one of wind scooper (18) of the radiating module (150).
3. cooling system as claimed in claim 2, it is characterised in that the wind pushing box (15) and the air-intaking box (14) equal shape
As annular box shape, wherein, each wind scooper (18) has air intake passage (21) and air-out passage (22), each wind scooper
(18) air intake passage (21) is rotatably connected to the ring exit of the wind pushing box (15), the air-out of each wind scooper (18)
Passage (22) is rotatably connected to the annular entry of the air-intaking box (14).
4. cooling system as claimed in claim 2, it is characterised in that each radiating module (150) include substrate (19),
Heat pipe (20) in the substrate (19) and the radiating fin (26) being plugged on the heat pipe (20).
5. cooling system as claimed in claim 4, it is characterised in that the heat pipe (20) includes：First extension
(20a), from the substrate (19) extending radially inwardly along the rotary shaft (9)；Second extension (20b), from described
The end of first extension (20a) is axially extending along the rotary shaft (9)；3rd extension (20c), from described
End the extending radially inwardly along the rotary shaft (9) of two extensions (20b), wherein, the radiating fin (26) is inserted
It is connected on the 3rd extension (20c).
6. cooling system as claimed in claim 5, it is characterised in that the wind scooper (18) only surrounds the radiating fin
(26)。
7. the cooling system as any one of claim 2 to 6, it is characterised in that the cooling system is also included institute
State the support frame (17) that circular radiating component (16) is fixed to the rotary shaft (9).
8. cooling system as claimed in claim 7, it is characterised in that support frame as described above (17) includes multiple butt rectangular pyramid bones
Frame (175) and two butt rectangular pyramid skeletons (175) adjacent in the multiple butt rectangular pyramid skeleton (175) are connected
The connecting rod come, wherein, each it is arranged on the multiple heat-sink unit in the multiple butt rectangular pyramid skeleton (175)
(160) between adjacent two heat-sink unit (160) in.
9. cooling system as claimed in claim 8, it is characterised in that the butt rectangular pyramid skeleton (175) also includes difference
The extending bracket (174) extended towards wind pushing box (15) and air-intaking box (14).
10. cooling system as claimed in claim 1, it is characterised in that the cold air feeding unit includes：
Condenser (12), the condenser (12) are arranged in the cabin (4) of wind power generating set；
Air-treatment case (13), the air-treatment case (13) include evaporator (23), and the evaporator (23) is situated between by cooling down
Matter pipeline (13a) forms circulation loop with the condenser (12).
11. cooling system as claimed in claim 10, it is characterised in that the air-treatment case (13) also includes：First enters
Air port (14a), suck extraneous air；Air outlet (14b), connected with the wind pushing box (15)；Second air intake vent (14c), with institute
Air-intaking box (14) connection is stated, and nearby fan is provided with the air outlet (14b).
12. a kind of wind power generating set, it is characterised in that the wind power generating set is included as any in claim 1 to 11
Cooling system described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711276462.6A CN107842472A (en) | 2017-12-06 | 2017-12-06 | Cooling system for shafting of wind driven generator and wind driven generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711276462.6A CN107842472A (en) | 2017-12-06 | 2017-12-06 | Cooling system for shafting of wind driven generator and wind driven generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107842472A true CN107842472A (en) | 2018-03-27 |
Family
ID=61664629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711276462.6A Pending CN107842472A (en) | 2017-12-06 | 2017-12-06 | Cooling system for shafting of wind driven generator and wind driven generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842472A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139396A (en) * | 2018-08-07 | 2019-01-04 | 北京金风科创风电设备有限公司 | Cooling system and cooling method of wind generating set and wind driven generator |
| CN109826764A (en) * | 2019-03-13 | 2019-05-31 | 浙江大学 | Bearing cooler and wind-driven generator including it |
| CN110630454A (en) * | 2018-08-31 | 2019-12-31 | 北京金风科创风电设备有限公司 | Motor and heat exchange device of shaft system thereof and wind generating set |
| US11982260B2 (en) | 2018-08-31 | 2024-05-14 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Generator, heat exchange device for shaft system thereof, and wind turbine |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130540A (en) * | 2011-03-11 | 2011-07-20 | 华小平 | Ventilating heat-radiation structure of direct-drive permanent-magnet wind-driven generator |
| WO2013062411A1 (en) * | 2011-10-25 | 2013-05-02 | Ewt Ip B.V. | Wind turbine with cooling system |
| EP2827012A1 (en) * | 2013-07-19 | 2015-01-21 | Siemens Aktiengesellschaft | Cooling of a bearing for a wind turbine |
| CN104956075A (en) * | 2012-08-10 | 2015-09-30 | 尤文能量有限责任公司 | Integrated cooling system for a nacelle of a wind turbine |
| CN205001129U (en) * | 2015-09-24 | 2016-01-27 | 北京万源工业有限公司 | Directly drive empty cooling system of empty water of wind generating set generator |
| CN205559169U (en) * | 2016-03-29 | 2016-09-07 | 北京金风科创风电设备有限公司 | Wind -driven generator and wind -driven generator set |
| WO2017032543A1 (en) * | 2015-08-24 | 2017-03-02 | Siemens Aktiengesellschaft | Synchronous reluctance machine |
| CN106939877A (en) * | 2017-03-16 | 2017-07-11 | 新疆金风科技股份有限公司 | The cooling system and wind power generating set of wind power generating set |
| CN107044390A (en) * | 2017-05-12 | 2017-08-15 | 北京金风科创风电设备有限公司 | Wind generating set and cooling control method thereof |
| CN207526655U (en) * | 2017-12-06 | 2018-06-22 | 北京金风科创风电设备有限公司 | For the cooling system and wind power generating set of the shafting of wind-driven generator |
-
2017
- 2017-12-06 CN CN201711276462.6A patent/CN107842472A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130540A (en) * | 2011-03-11 | 2011-07-20 | 华小平 | Ventilating heat-radiation structure of direct-drive permanent-magnet wind-driven generator |
| WO2013062411A1 (en) * | 2011-10-25 | 2013-05-02 | Ewt Ip B.V. | Wind turbine with cooling system |
| CN104956075A (en) * | 2012-08-10 | 2015-09-30 | 尤文能量有限责任公司 | Integrated cooling system for a nacelle of a wind turbine |
| EP2827012A1 (en) * | 2013-07-19 | 2015-01-21 | Siemens Aktiengesellschaft | Cooling of a bearing for a wind turbine |
| WO2017032543A1 (en) * | 2015-08-24 | 2017-03-02 | Siemens Aktiengesellschaft | Synchronous reluctance machine |
| CN205001129U (en) * | 2015-09-24 | 2016-01-27 | 北京万源工业有限公司 | Directly drive empty cooling system of empty water of wind generating set generator |
| CN205559169U (en) * | 2016-03-29 | 2016-09-07 | 北京金风科创风电设备有限公司 | Wind -driven generator and wind -driven generator set |
| CN106939877A (en) * | 2017-03-16 | 2017-07-11 | 新疆金风科技股份有限公司 | The cooling system and wind power generating set of wind power generating set |
| CN107044390A (en) * | 2017-05-12 | 2017-08-15 | 北京金风科创风电设备有限公司 | Wind generating set and cooling control method thereof |
| CN207526655U (en) * | 2017-12-06 | 2018-06-22 | 北京金风科创风电设备有限公司 | For the cooling system and wind power generating set of the shafting of wind-driven generator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139396A (en) * | 2018-08-07 | 2019-01-04 | 北京金风科创风电设备有限公司 | Cooling system and cooling method of wind generating set and wind driven generator |
| CN110630454A (en) * | 2018-08-31 | 2019-12-31 | 北京金风科创风电设备有限公司 | Motor and heat exchange device of shaft system thereof and wind generating set |
| US11982260B2 (en) | 2018-08-31 | 2024-05-14 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Generator, heat exchange device for shaft system thereof, and wind turbine |
| CN109826764A (en) * | 2019-03-13 | 2019-05-31 | 浙江大学 | Bearing cooler and wind-driven generator including it |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108019324B (en) | Shafting cooling system, control method thereof and wind generating set | |
| US8047774B2 (en) | System for heating and cooling wind turbine components | |
| CN108050023A (en) | Cooling system for shafting of wind generating set and wind generating set | |
| CN207526655U (en) | For the cooling system and wind power generating set of the shafting of wind-driven generator | |
| CN107842472A (en) | Cooling system for shafting of wind driven generator and wind driven generator set | |
| CN205207057U (en) | Wind generating set cooling system and wind generating set | |
| CN104754924A (en) | Server heat radiation system combining liquid cooling device and auxiliary heat radiating device | |
| EP2238345B1 (en) | A wind turbine generator with a heat exchanger | |
| US8403638B2 (en) | Wind power generator | |
| CN104956075A (en) | Integrated cooling system for a nacelle of a wind turbine | |
| CN104379926A (en) | Cooling system of wind turbine | |
| CN102187549A (en) | Dynamoelectric machine | |
| CN109944746A (en) | Wind power generating set | |
| CN207178126U (en) | Direct-drive aerogenerator set base bearing cooling body | |
| WO2012002066A1 (en) | Wind-powered electricity generator | |
| US20120111532A1 (en) | Cooling-arrangement | |
| CN107528423A (en) | A kind of small-size wind power-generating closed permanent magnet generator | |
| CN105402094B (en) | Become oar cabinet cooling device and wind generating set | |
| CN205714607U (en) | A kind of circulating type cooling system of wind driven generator | |
| CN214791559U (en) | Heat exchanger for air conditioner outdoor unit and air conditioner outdoor unit | |
| CN111042998B (en) | Wind generating set | |
| CN110318958B (en) | Cooling system of main bearing mechanism of direct-drive generator and direct-drive generator | |
| CN207989704U (en) | The wind turbine gearbox of self-reinforcing heat dissipation | |
| CN113623152A (en) | Cooling system of wind driven generator and wind driven generator | |
| CN113389881A (en) | Wind turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |