CN106533037B - Double-feed wind driven generator - Google Patents
Double-feed wind driven generator Download PDFInfo
- Publication number
- CN106533037B CN106533037B CN201611144673.XA CN201611144673A CN106533037B CN 106533037 B CN106533037 B CN 106533037B CN 201611144673 A CN201611144673 A CN 201611144673A CN 106533037 B CN106533037 B CN 106533037B
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- air
- doubly
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- housing
- wind
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a doubly-fed wind driven generator, which comprises a shell, a stator and a rotor, wherein axial fans are arranged at two ends of a rotor shaft, and the doubly-fed wind driven generator further comprises: the first wind channel sets up at the middle part of casing along axial length and encircles the stator, first wind channel has air exit and a plurality of first induced air mouth, wherein, a plurality of first induced air mouths and air exit are located the both sides of casing along width direction respectively, second and third wind channel, set up the both sides of the axial length of the first wind channel of casing to encircle the stator, the second wind channel includes air exit and a plurality of second induced air mouth and a plurality of third induced air mouth, second and third induced air mouth are located the upper and lower both sides of the edge perpendicular line direction of stator, wherein, the air exit in first, second and third wind channel gathers into total air exit. According to the invention, the exhaust port and the air inlet are mutually separated, so that the heat flow short circuit is avoided, and meanwhile, the heat dissipation dead angle can be eliminated by arranging a plurality of air channels and the air guiding ports.
Description
Technical Field
The invention relates to a doubly-fed wind driven generator.
Background
Wind energy is becoming more and more important worldwide as a clean renewable energy source. The energy storage is huge, and the total amount of the global wind energy resources is about 2.74 multiplied by 109 megawatts, wherein the available wind energy is 2 multiplied by 107 megawatts. The Chinese wind energy has large reserves, wide distribution range and huge development and utilization potential. With the development of world economy, the wind energy market is rapidly developing. With the environment protection and the like, the wind power generation is rapidly developed in recent years, the total installed capacity of the wind power generation is increased by about 12.5% in 2013, and the total installed capacity of the global wind power generation breaks through 3 hundred million kilowatts in 2013, and reaches 31813 kilowatts.
The doubly fed wind driven generator is one of core equipment of a wind power system, temperature rise is an important index for design and operation of the doubly fed wind driven generator, the heating degree of heating equipment is marked, and in order to prolong the service life of the doubly fed wind driven generator, the temperature rise is controlled, and the temperature rise is fully reduced. As the power of the generator increases, the temperature rise control of the generator is particularly prominent.
As shown in fig. 1, an air inlet 11 'and an air outlet 12' are formed at the top of a housing 10 'of the doubly-fed wind power generator, a stator 20', a rotor 30 'and fans 40' are formed at both ends of a rotor shaft in the housing, cooling air sucked from the air inlet 11 'is supplied along an inner cavity of a stator support 21' by the fans 40', and then is discharged from the air outlet 12' after passing through a gap between the rotor 30 'and a silicon steel sheet of the stator 20'.
The doubly-fed wind power generator with the structure has the following problems: the air inlet and the air outlet are both positioned at the top of the shell, are close in distance, can cause exhaust hot air to enter the air inlet in the operation process, cause wind short circuit, and are not easy to dissipate heat. Moreover, on the longitudinal section of the doubly-fed wind power generator, as shown in fig. 2, the flow of hot air at the lower part A of the doubly-fed wind power generator is unsmooth, so that wind dead angles are formed.
At present, an air-air cooler is mainly fixed on a shell, and the stator and the rotor are forcedly cooled by improving the air quantity and the air pressure, so that the problem of wind interference of an air inlet and an air outlet can be ignored, and the dead angle of wind power at the lower part A can not be overcome.
The exhaust gas from the exhaust port in the generator is cooled and then sent back to the air inlet, so that the exhaust gas can be prevented from interfering other equipment of the fan shell, but energy is wasted, the exhaust gas from the exhaust port does not form a pollution source of the atmosphere, and the exhaust gas can be filtered and discharged.
Accordingly, there is a need for an improvement over existing doubly-fed wind generators to eliminate the height Wen Sijiao while reducing energy waste.
Disclosure of Invention
The invention aims to solve one or more problems in the prior art and provide a double-fed wind driven generator so as to eliminate wind dead angles.
To this end, the invention provides a doubly-fed wind generator, which comprises a shell, a stator and a rotor, wherein axial fans are arranged at two ends of a rotor shaft of the rotor, and the doubly-fed wind generator further comprises: the first wind channel sets up the middle part of casing along axial length and encircle the stator, first wind channel has air outlet and a plurality of first induced air mouth, wherein, a plurality of first induced air mouths and air outlet are located respectively the casing is along width direction's both sides, second wind channel and third wind channel set up the both sides of the axial length of the first wind channel of casing, and encircle the stator, the second wind channel includes air outlet and a plurality of second induced air mouth and a plurality of third induced air mouth, second induced air mouth and third induced air mouth are located the upper and lower both sides of the edge of perpendicular line direction of stator, wherein, the air outlet of first wind channel, the air outlet of second wind channel and the air outlet of third wind channel are located the casing is along width direction's same side to assemble total air outlet.
Further, the total air outlet is connected with the air outlet of the fan shell through a pipeline.
Further, an insulating sheet or layer is provided on the inner wall of the first air duct.
Further, a heat sink or layer is provided on the inner wall of the second air duct.
Further, a heat sink or layer is provided on the inner wall of the third air duct.
Further, the doubly-fed wind power generator further comprises a cooling device arranged on the air inlet of the shell and used for providing cooling air for the air inlet.
Further, the doubly-fed wind driven generator further comprises a fan arranged on the air inlet of the shell, and the fan is used for forcedly providing cooling air for the air inlet.
Further, the air inlets at both ends of the housing along the axial length are arranged around the stator, and the surrounding angle is 270 degrees or more.
Further, the doubly-fed wind driven generator further comprises a base, wherein the first air duct, the second air duct and the third air duct mainly comprise an inner bushing and a shell, and the base is welded on the shell.
Further, the doubly-fed wind driven generator further comprises a base, the first air duct, the second air duct and the third air duct are respectively composed of a shell and air duct cladding surrounding the shell, and the base is welded in a neutral position area between the air duct cladding on the shell.
According to the doubly-fed wind driven generator, the exhaust air of the exhaust port and the air flow of the air inlet are mutually separated, so that the reduction of the air cooling effect caused by the short circuit of heat flow is avoided, and the first air guiding port, the second air guiding port and the third air guiding port are arranged, so that the dead angle of heat dissipation can be avoided, and the air cooling effect is improved.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of the external structure of a doubly-fed wind generator of the prior art;
FIG. 2 is a schematic longitudinal cross-sectional view of a doubly-fed wind generator of the prior art;
FIG. 3 is a schematic cross-sectional view of a doubly-fed wind generator of the prior art;
FIG. 4 is a schematic view showing an external structure of a doubly-fed wind generator according to a first embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a doubly-fed wind generator according to a first embodiment of the present invention at a first wind tunnel;
FIG. 6 is a schematic cross-sectional view of a doubly-fed wind generator according to a first embodiment of the present invention at a second wind tunnel and at a third wind tunnel;
FIG. 7 is a schematic view showing an external structure of a doubly-fed wind generator according to a second embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a doubly-fed wind generator according to a second embodiment of the present invention at a first wind tunnel;
FIG. 9 is a schematic cross-sectional view of a doubly-fed wind generator according to a second embodiment of the present invention at a second wind tunnel or at a third wind tunnel; and
fig. 10 is a schematic view of an exhaust structure of a doubly-fed wind generator inside a blower housing according to the present invention.
Description of the reference numerals
10. A housing; 20. A stator;
30. a rotor; 40. An axial flow fan;
11. a first air duct; 12. A second air duct;
13. a third air duct; 14. An air outlet;
15. a first air inlet; 16. A second air inlet;
17. a third air inlet; 18. An air inlet;
19. a base; 50. An exhaust fan;
60. an inner liner; 70. An air duct cladding;
80. a heat dissipation pipe; 90. A blower housing.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Fig. 4-10 illustrate some embodiments according to the invention.
As shown in fig. 4 to 6, the doubly-fed wind generator of the present embodiment includes a housing 10, a stator 20, and a rotor 30, wherein axial fans 40 are provided at both ends of a rotor shaft of the rotor 30, and further includes a first air duct 11, a second air duct 12, and a third air duct 13.
The first air duct 11 is disposed at a central portion of the housing 10 along an axial length and surrounds the stator 20, and the first air duct 11 has an air outlet 14 and a plurality of first air outlets 15, wherein the plurality of first air outlets 15 and the air outlet 14 are respectively located at two sides of the housing 10 along a width direction.
The second air duct 12 and the third air duct 13 are arranged on two sides of the first air duct 11 of the shell 10 along the axial length and encircle the stator 20, and are respectively provided with an air outlet 14, a plurality of second air outlets 16 and a plurality of third air outlets 17, wherein the second air outlets 16 and the third air outlets 17 are positioned on the upper side and the lower side of the stator 20 along the vertical line direction and are symmetrical with respect to the horizontal plane where the stator axis is positioned.
The air outlet 14 of the first air duct, the air outlet 14 of the second air duct and the air outlet 14 of the third air duct are positioned on the same side of the shell along the width direction and are converged into a total air outlet.
In this embodiment, first wind channel is located the central point of axial length of casing, and the air exit sets up in one side of casing along width direction, and a plurality of induced air mouths of first wind channel are relative with the position of air exit, set up in the position that is difficult for the heat extraction, and the second induced air mouth and the third induced air mouth of second wind channel set up in the upper and lower both sides of the edge perpendicular direction of stator, and when the axial fan at rotor shaft both ends during operation, the cooling air current is drawn forth along first induced outlet, second induced outlet and third induced outlet, has eliminated the heat dissipation dead angle.
In this embodiment, the total exhaust port is connected to an exhaust fan 50 (shown in fig. 10) for forcibly exhausting the hot air in the total exhaust port, so that the air flows in the first air duct and the second air duct and the third air duct are smooth, and the heat dissipation is reliable.
In this embodiment, preferably, heat insulation sheets or layers are disposed on the inner walls of the first air duct, the second air duct and the third air duct to avoid heating the passing position by the hot air flow.
In this embodiment, the air inlet is provided in the same manner as the prior art, and preferably, a fan is provided at the air inlet to provide forced cooling air flow to the air inlet.
As shown in fig. 7 to 9, in the doubly-fed wind generator of the present embodiment, the air inlets 18 at both ends of the housing in the axial direction are arranged around the stator at an angle of 270 ° or more so that the air intake is sufficient.
In the second embodiment, the first air duct, the second air duct, and the third air duct are located within the housing, and are mainly composed of the inner liner 60 and the casing 10 in the housing. Whereas in the first embodiment the first, second and third air ducts consist essentially of the housing 10 and respective duct cladding 70 surrounding the casing, the base is welded to the casing in the region of the non-duct cladding 70. The duct cladding 70 is preferably post-installed to be knocked down during installation of the doubly-fed wind turbine.
According to the two embodiments of the invention, the exhaust air of the exhaust port and the air flow of the air inlet are mutually separated, so that the short circuit of heat flow is avoided, the air cooling effect is reduced, and the heat dissipation dead angle can be avoided by arranging the first air guiding port, the second air guiding port and the third air guiding port.
In one embodiment, as shown in fig. 10, the total exhaust port is directly connected to the exhaust fan 50 and exhausted to the outside of the fan housing 90 through the heat dissipation duct 80, or the total exhaust port is connected to the exhaust fan mounted on the fan housing through the heat dissipation duct so as to suck the hot air flowing out of the exhaust port to the outside of the fan housing. In this embodiment, the hot air is discharged outside the blower housing and discharged into the atmosphere, and does not form a circulation flow with the air flow inside the blower housing, so that the cooling effect is improved, and the inside of the blower housing 90 is used for installing the doubly-fed wind power generator, the speed reducer, the power distribution cabinet and other mechanisms.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A doubly-fed wind power generator comprises a shell, a stator and a rotor, wherein two ends of a rotor shaft of the rotor are provided with
There is axial fan, its characterized in that still includes:
a first air duct arranged at the central part of the shell along the axial length and surrounding the stator, the first air duct
The air outlet is provided with an air outlet and a plurality of first air outlets, wherein the first air outlets and the air outlet are respectively positioned along the shell
On both sides in the width direction,
the second air duct and the third air duct are arranged on two sides of the axial length of the first air duct of the shell and encircle the stator, the second air duct comprises an air outlet, a plurality of second air inlets and a plurality of third air inlets, the second air inlets and the third air inlets are positioned on the upper side and the lower side of the stator along the vertical line direction,
the air outlet of the first air channel, the air outlet of the second air channel and the air outlet of the third air channel are positioned on the same side of the shell along the width direction and are converged into a total air outlet;
the main exhaust outlet is connected with an exhaust outlet of the fan shell through a pipeline;
and the inner wall of the first air duct is provided with a heat insulation sheet or layer.
2. The doubly-fed wind generator according to claim 1, wherein a heat sink or layer is provided on an inner wall of the second wind channel.
3. The doubly-fed wind generator according to claim 1, wherein a heat sink or layer is provided on an inner wall of the third wind channel.
4. The doubly-fed wind generator of claim 1 further comprising a cooling device disposed on the air inlet of the housing for providing cooling air to the air inlet.
5. The doubly-fed wind generator of claim 1 further including a fan disposed on an air intake of said housing for forcibly supplying cooling air to the air intake.
6. The doubly-fed wind generator according to claim 1, wherein air inlets at both ends of the housing along the axial length are arranged around the stator at an angle of 270 ° or more.
7. The doubly-fed wind generator according to any one of claims 1-6 further comprising a base, said first, second and third wind channels consisting essentially of an inner liner and a housing, said base being welded to said housing.
8. The doubly-fed wind generator according to any one of claims 1-6 further comprising a base, said first, second and third wind channels each being comprised of a housing and respective wind channel enclosures surrounding the housing, said base being welded to said housing in a neutral region between said wind channel enclosures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611144673.XA CN106533037B (en) | 2016-12-13 | 2016-12-13 | Double-feed wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611144673.XA CN106533037B (en) | 2016-12-13 | 2016-12-13 | Double-feed wind driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106533037A CN106533037A (en) | 2017-03-22 |
| CN106533037B true CN106533037B (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611144673.XA Active CN106533037B (en) | 2016-12-13 | 2016-12-13 | Double-feed wind driven generator |
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| CN (1) | CN106533037B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086292A (en) * | 2018-01-26 | 2019-08-02 | 西门子公司 | Motor body and motor with cooling structure of stator |
| CN111614184A (en) * | 2020-05-22 | 2020-09-01 | 康富科技有限公司 | Generator with fan |
| CN112713695B (en) * | 2020-12-21 | 2022-08-09 | 中车永济电机有限公司 | Cooling fan motor for locomotive |
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| DE10246690A1 (en) * | 2002-10-07 | 2004-04-22 | Siemens Ag | Wind turbine generator with closed ventilation system within generator housing allowing use in aggressive environment |
| JP2011151886A (en) * | 2010-01-19 | 2011-08-04 | Toyota Central R&D Labs Inc | In-wheel motor |
| WO2012139284A1 (en) * | 2011-04-13 | 2012-10-18 | 双悦（福建）动力机械有限公司 | Double air-exhaust type synchronous generator and air-cooling ultra-silent generating set |
| JP2014100024A (en) * | 2012-11-15 | 2014-05-29 | Kayaba Ind Co Ltd | Rotary electric machine |
| CN204349673U (en) * | 2015-02-10 | 2015-05-20 | 浙江万冠电机有限公司 | A kind of ventilated motor |
| CN205141890U (en) * | 2015-10-28 | 2016-04-06 | 上海电机***节能工程技术研究中心有限公司 | Ventilation structure of motor |
| CN206226188U (en) * | 2016-12-13 | 2017-06-06 | 国家电网公司 | Duplex feeding wind-driven generator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2865080B1 (en) * | 2003-12-19 | 2006-04-28 | Telma | SIMPLE RADIAL ELECTROMAGNETIC RETARDER COMPRISING MEANS FOR PROVIDING A VENTILATION |
| EP2403115A1 (en) * | 2009-02-27 | 2012-01-04 | Hitachi, Ltd. | Permanent magnet generator |
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2016
- 2016-12-13 CN CN201611144673.XA patent/CN106533037B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10246690A1 (en) * | 2002-10-07 | 2004-04-22 | Siemens Ag | Wind turbine generator with closed ventilation system within generator housing allowing use in aggressive environment |
| JP2011151886A (en) * | 2010-01-19 | 2011-08-04 | Toyota Central R&D Labs Inc | In-wheel motor |
| WO2012139284A1 (en) * | 2011-04-13 | 2012-10-18 | 双悦（福建）动力机械有限公司 | Double air-exhaust type synchronous generator and air-cooling ultra-silent generating set |
| JP2014100024A (en) * | 2012-11-15 | 2014-05-29 | Kayaba Ind Co Ltd | Rotary electric machine |
| CN204349673U (en) * | 2015-02-10 | 2015-05-20 | 浙江万冠电机有限公司 | A kind of ventilated motor |
| CN205141890U (en) * | 2015-10-28 | 2016-04-06 | 上海电机***节能工程技术研究中心有限公司 | Ventilation structure of motor |
| CN206226188U (en) * | 2016-12-13 | 2017-06-06 | 国家电网公司 | Duplex feeding wind-driven generator |
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| CN106533037A (en) | 2017-03-22 |
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