CN208539725U - A kind of bearing of doubly-fed wind turbine and the cooling device of slip ring - Google Patents
A kind of bearing of doubly-fed wind turbine and the cooling device of slip ring Download PDFInfo
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- CN208539725U CN208539725U CN201820959596.1U CN201820959596U CN208539725U CN 208539725 U CN208539725 U CN 208539725U CN 201820959596 U CN201820959596 U CN 201820959596U CN 208539725 U CN208539725 U CN 208539725U
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- slip ring
- bearing
- room
- air inlet
- electric motor
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- 238000001816 cooling Methods 0.000 title claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 25
- 238000009423 ventilation Methods 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims description 17
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 238000005119 centrifugation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the cooling devices of a kind of bearing of doubly-fed wind turbine and slip ring, including main shaft, one end of main shaft electric motor end cap is installed by bearing, the inside of electric motor end cap is installed by windshield, cover chamber of keeping out the wind is formd between windshield and electric motor end cap, electric motor end cap end face is provided with the cover chamber air inlet hole that keeps out the wind with the cover chamber exhaust vent that keeps out the wind, and cover chamber of keeping out the wind exhaust vent is communicated to slip ring room by induced duct, and the lateral wall of slip ring room is equipped with ventilation blower；Main shaft one end end is equipped with slip ring and carbon brush, is placed in slip ring room；The second air inlet hole of the first air inlet hole of slip ring room and slip ring room is provided on the side wall of slip ring room.Its structure is simple, both solved doubly-fed wind turbine axis band centrifugation fan side bearing temperature is very high in the process of running, the problem of causing bearing locking, bearing life to reduce, in turn ensure the cooling effect of slip ring and carbon brush, carbon dust is not easy to accumulate in slip ring room simultaneously, solves and excludes unsmooth caused slip ring and carbon brush short circuit problem by carbon dust.
Description
Technical field
The utility model relates to cooling devcie of motor technical field, the bearing and cunning of especially a kind of doubly-fed wind turbine
The cooling device of ring.
Background technique
Currently, doubly-fed wind turbine is in order to enhance heat-sinking capability, it will usually one end placement axis band centrifugation in motor
Fan.Although axis improves the air quantity that wind path recycles in motor with centrifugal fan, enhance the heat-sinking capability of motor, but axis takes away
Interior wind path air-flow at heart fan causes temperature very high as absorbing heat caused by machine winding and iron core, high temperature gas flow
The bearing of axis band centrifugation fan side is toasted, the side bearing dissipating-heat environment is poor, since bearing can also generate heat in the process of running,
Therefore temperature is very high in the process of running for the side bearing, not only has the hidden danger of bearing locking, can also reduce the service life of bearing.
Currently, reduce axis band centrifugation fan side bearing temperature method mainly have: on the outside of electric motor end cap forced ventilation or
Enter inside of the axis with electric motor end cap at centrifugal fan from air inducing from air cooler outer ventilation circuit fan.It is forced on the outside of electric motor end cap logical
Wind is although easy to accomplish, but due to still being toasted by interior wind path high temperature gas flow on the inside of bearing, bearing cooling effect is bad, still has
Bearing high temperature hidden danger.Enter from air inducing from air cooler outer ventilation circuit fan at axis band centrifugal fan on the inside of electric motor end cap, although cooling
Effect is preferable, but structure is complicated, needs to install one between air cooler outer ventilation circuit fan and axis band centrifugation fan side electric motor end cap
Longer induced duct, at high cost, complex process and the appearance for influencing motor.
The slip ring room of doubly-fed wind turbine is provided with slip ring and carbon brush, and when operation can generate carbon dust, for cooling slip ring with
Carbon brush simultaneously excludes carbon dust in slip ring room, and the method generallyd use is the installation axle band wind for air blast in slip ring room or in slip ring room
Fan.Air blast can cause sinuous flow strong in slip ring room in slip ring room, and sinuous flow can cause the carbon dust at dead corner to be accumulated, when long
Between operation easily cause Short circuit.The installation axle band fan in slip ring room, since axis can be only positioned at axle center with the air inlet of fan
Place, necessarily with the presence of dead corner, while the installation axle band fan in slip ring room, it can also cause electric machine main shaft vibration big, bring
The problems such as rotor dynamic balancing is difficult.
Utility model content
The applicant provides the bearing and cunning of a kind of doubly-fed wind turbine for the disadvantage in above-mentioned existing production technology
The cooling device of ring, on the one hand solving the bearing of doubly-fed wind turbine axis band centrifugation fan side, temperature is very in the process of running
Height, on the other hand solves in slip ring room carbon dust and is easy accumulation, by carbon dust the problem of causing bearing locking, bearing life to reduce
Unsmooth caused slip ring and carbon brush short circuit problem are excluded, use reliability, good cooling results are substantially increased.
Technical solution used by the utility model is as follows:
A kind of bearing of doubly-fed wind turbine and the cooling device of slip ring, including main shaft, one end of main shaft pass through bearing
Electric motor end cap is installed, the inside of electric motor end cap installs windshield, cover chamber of keeping out the wind, motor are formd between windshield and electric motor end cap
End cap end face is provided with the cover chamber air inlet hole that keeps out the wind with the cover chamber exhaust vent that keeps out the wind, and cover chamber of keeping out the wind exhaust vent is communicated to slip ring by induced duct
The lateral wall of room, slip ring room is equipped with ventilation blower；Main shaft one end end is equipped with slip ring and carbon brush, is placed in slip ring room；It is sliding
The second air inlet hole of the first air inlet hole of slip ring room and slip ring room is provided on the side wall of ring casing.
Its further technical solution is:
The first air inlet hole of slip ring room and the second air inlet hole of slip ring room being provided on the side wall of slip ring room also can be set in cunning
On other wall surfaces of ring casing, and it is more than or equal to one.
The quantity of cover chamber of keeping out the wind air inlet hole is more than or equal to one.
Electric motor end cap is mounted on base side wall, and pedestal is equipped with outer iron core, peace in outer iron core in pedestal at hollow thin-wall shape
Equipped with outer winding, interior winding is installed in outer winding, interior iron core is installed in interior winding.
Axis band centrifugal fan is installed on the shaft shoulder of main shaft.
Air cooler is installed, air cooler is at hollow thin-wall structure on pedestal.
The beneficial effects of the utility model are as follows:
The utility model is compact-sized, reasonable, easy to operate, by the way that windshield is arranged on the inner wall of electric motor end cap, benefit
With the high temperature gas flow in windshield isolation motor, the dissipating-heat environment of the bearing of bearing centrifugal fan side is improved；Pass through motor side
Lid and windshield form cover chamber of keeping out the wind, at least one cover chamber air inlet hole that keeps out the wind are opened up on electric motor end cap, windshield passes through air inducing
Pipe is communicated with slip ring room, and slip ring room is communicated with ventilation blower air inlet, while on the slip ring room side wall with electric motor end cap face, being opened
There is at least one slip ring room air inlet hole；When ventilation blower operation, ventilation blower exhausting out of slip ring room, the air taken away in slip ring room
Be mainly derived from two parts: slip ring room air inlet hole of the portion of air on slip ring room side wall, the partial air flow through cunning
Ring and carbon brush, cooling slip ring and carbon brush, and carbon dust is excluded, simultaneously because the indoor negative pressure of slip ring, carbon dust will not be in slip ring rooms
Dead angle acumulation excludes Short circuit hidden danger；Another part air source is in the cover chamber air inlet hole that keeps out the wind, and outside air is from cover chamber of keeping out the wind
Air inlet hole is entered in slip ring room after entering cover chamber of keeping out the wind by induced duct, is then vented machine and is taken away, outside air is in windshield
It is intracavitary to flow through electric motor end cap surface on the inside of bearing, to reduce bearing temperature, prevent bearing locking and extend the use longevity of bearing
Life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the appearance right view of the utility model.
Fig. 3 is the interior air flow schematic diagram of the utility model.
Wherein: 1, induced duct；2, windshield；3, the first air inlet hole of slip ring room；4, electric motor end cap；5, ventilation blower；6, bearing；
7, slip ring and carbon brush；8, slip ring room；9, it keeps out the wind cover chamber；10, the second air inlet hole of slip ring room；11, cover chamber of keeping out the wind air inlet hole；12, axis
Band centrifugal fan；13, air cooler；14, pedestal；15, main shaft；16, outer iron core；17, interior iron core；18, outer winding；19, interior winding；
20, cover chamber of keeping out the wind exhaust vent；21, external environment cold air；22, slip ring room outlet air.
Specific embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, the cooling device of the bearing of the doubly-fed wind turbine of the present embodiment and slip ring, including
Electric motor end cap 4 is installed by bearing 6 in one end of main shaft 15, main shaft 15, and windshield 2, windshield 2 are installed in the inside of electric motor end cap 4
Cover chamber 9 of keeping out the wind is formd between electric motor end cap 4,4 end face of electric motor end cap is provided with keep out the wind cover chamber air inlet hole 11 and cover chamber of keeping out the wind and goes out
Air holes 20, cover chamber of keeping out the wind exhaust vent 20 are communicated to slip ring room 8 by induced duct 1, and the lateral wall of slip ring room 8 is equipped with ventilation blower 5；
15 one end end of main shaft is equipped with slip ring and carbon brush 7, is placed in slip ring room 8；Slip ring room first is provided on the side wall of slip ring room 8
Air inlet hole 3 and the second air inlet hole of slip ring room 10.
The first air inlet hole of slip ring room 3 and the second air inlet hole of slip ring room 10 being provided on the side wall of slip ring room 8 also can be set
On other wall surfaces of slip ring room 8, and it is more than or equal to one.
The quantity of cover chamber of keeping out the wind air inlet hole 11 is more than or equal to one.
Electric motor end cap 4 is mounted on 14 side wall of pedestal, and pedestal 14 is equipped with outer iron core 16 in pedestal 14 at hollow thin-wall shape,
Outer winding 18 is installed in outer iron core 16, interior winding 19 is installed in outer winding 18, interior iron core 17 is installed in interior winding 19.
Axis band centrifugal fan 12 is installed on the shaft shoulder of main shaft 15.
Air cooler 13 is installed, air cooler 13 is at hollow thin-wall structure on pedestal 14.
The working principle and the course of work of the utility model are as follows:
In motor operation, axis is with the interior wind path air-flow at centrifugal fan 12, due to absorbing the interior winding 19, outer of motor
Heat caused by winding 18, interior iron core 17 and outer iron core 16, therefore temperature is very high, windshield 2 can will be in bearings 6 and motor
High temperature gas flow keep apart, avoid axis with baking of the wind path air-flow to bearing 6 in the high temperature at centrifugal fan 12, so as to improve axis
Hold 6 cooler environment.
In motor operation, ventilation blower 5 is opened, ventilation blower 5 is taken air away out of slip ring room 8 and flowed through slip ring room outlet air 22
Out, the air source being pumped in slip ring room 8 is in two parts: a part of from the first air inlet hole of slip ring room on 8 wall surface of slip ring room
3, the second air inlet hole of slip ring room 10 enters slip ring room 8, and another part enters gear from the cover chamber air inlet hole 11 that keeps out the wind on electric motor end cap 4
Then fan housing chamber 9 is flowed into slip ring room 8 by induced duct 1.
From the first air inlet hole of slip ring room 3, the second air inlet hole of slip ring room 10 enter slip ring room 8 air, can flow through slip ring and
Carbon brush 7 takes away the carbon dust generated due to motor operation friction while cooling down slip ring and carbon brush 7, since the suction of ventilation blower 5 is made
With, negative pressure is generated in slip ring room 8, thus carbon dust will not exclude the hidden danger of Short circuit in the dead angle acumulation in slip ring room 8.
The external environment cold air 21 for entering slip ring room 8 from the cover chamber air inlet hole 11 that keeps out the wind, can first pass through cover chamber 9 of keeping out the wind,
6 inside electric motor end cap of bearing, 4 surface is flowed through in cover chamber of keeping out the wind 9, achievees the purpose that cooling bearing 6, is reduced by 6 temperature of bearing, is prevented
6 locking of bearing and the physical life for extending bearing 6, the air in cover chamber of then keeping out the wind 9 enter in slip ring room 8 by induced duct 1.
Above description is the explanation to the utility model, is not the restriction to utility model, defined by the utility model
Range is within the protection scope of the utility model referring to claim, can make any type of modification.
Claims (6)
1. a kind of bearing of doubly-fed wind turbine and the cooling device of slip ring, it is characterised in that: including main shaft (15), the master
Windshield (2) are installed by bearing (6) installation electric motor end cap (4), the inside of electric motor end cap (4) in one end of axis (15), the gear
It is formd between fan housing (2) and electric motor end cap (4) cover chamber of keeping out the wind (9), electric motor end cap (4) end face is provided with the cover chamber air inlet that keeps out the wind
It hole (11) and keeps out the wind cover chamber exhaust vent (20), cover chamber of keeping out the wind exhaust vent (20) is communicated to slip ring room (8) by induced duct (1), sliding
The lateral wall of ring casing (8) is equipped with ventilation blower (5)；Main shaft (15) one end end is equipped with slip ring and carbon brush (7), is placed in
In slip ring room (8)；The first air inlet hole of slip ring room (3) and the second air inlet hole of slip ring room (10) are provided on the side wall of slip ring room (8).
2. a kind of bearing of doubly-fed wind turbine as described in claim 1 and the cooling device of slip ring, it is characterised in that: institute
It states the first air inlet hole of slip ring room (3) being provided on the side wall of slip ring room (8) and the second air inlet hole of slip ring room (10) is arranged in slip ring
On other wall surfaces of room (8), and it is more than or equal to one.
3. a kind of bearing of doubly-fed wind turbine as described in claim 1 and the cooling device of slip ring, it is characterised in that: institute
The quantity for stating the cover chamber air inlet hole (11) that keeps out the wind is more than or equal to one.
4. a kind of bearing of doubly-fed wind turbine as described in claim 1 and the cooling device of slip ring, it is characterised in that: institute
It states electric motor end cap (4) and is mounted on pedestal (14) side wall, for pedestal (14) at hollow thin-wall shape, pedestal (14) is interior to be equipped with outer iron core
(16), it is equipped with outer winding (18) in outer iron core (16), is equipped with interior winding (19) in outer winding (18), peace in interior winding (19)
Equipped with interior iron core (17).
5. a kind of bearing of doubly-fed wind turbine as described in claim 1 and the cooling device of slip ring, it is characterised in that: institute
It states and axis band centrifugal fan (12) is installed on the shaft shoulder of main shaft (15).
6. a kind of bearing of doubly-fed wind turbine as claimed in claim 4 and the cooling device of slip ring, it is characterised in that: institute
It states and is equipped on pedestal (14) air cooler (13), air cooler (13) is at hollow thin-wall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820959596.1U CN208539725U (en) | 2018-06-21 | 2018-06-21 | A kind of bearing of doubly-fed wind turbine and the cooling device of slip ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820959596.1U CN208539725U (en) | 2018-06-21 | 2018-06-21 | A kind of bearing of doubly-fed wind turbine and the cooling device of slip ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208539725U true CN208539725U (en) | 2019-02-22 |
Family
ID=65392090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820959596.1U Active CN208539725U (en) | 2018-06-21 | 2018-06-21 | A kind of bearing of doubly-fed wind turbine and the cooling device of slip ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208539725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108566049A (en) * | 2018-06-21 | 2018-09-21 | 中科盛创（青岛）电气股份有限公司 | A kind of cooling device of the bearing and slip ring of doubly-fed wind turbine |
-
2018
- 2018-06-21 CN CN201820959596.1U patent/CN208539725U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108566049A (en) * | 2018-06-21 | 2018-09-21 | 中科盛创（青岛）电气股份有限公司 | A kind of cooling device of the bearing and slip ring of doubly-fed wind turbine |
| CN108566049B (en) * | 2018-06-21 | 2024-05-28 | 国华(江苏)风电有限公司 | Cooling device for bearing and slip ring of doubly-fed wind generator |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210518 Granted publication date: 20190222 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240518 Granted publication date: 20190222 |
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| PD01 | Discharge of preservation of patent |