CN201656596U - Rotor of doubly-fed generator - Google Patents
Rotor of doubly-fed generator Download PDFInfo
- Publication number
- CN201656596U CN201656596U CN2009202950535U CN200920295053U CN201656596U CN 201656596 U CN201656596 U CN 201656596U CN 2009202950535 U CN2009202950535 U CN 2009202950535U CN 200920295053 U CN200920295053 U CN 200920295053U CN 201656596 U CN201656596 U CN 201656596U
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- rotor
- winding
- support ring
- winding support
- fed generator
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Abstract
The utility model provides a rotor of a doubly-fed generator, and aims to solve the problems of poor air cooling effect, stronger windage resistance and longer wind current paths among a fan, a stator and a rotor of the traditional doubly-fed generator. The rotor of the double-fed generator comprises a rotation shaft, wherein a rotor core is arranged on the rotation shaft; the end part of a rotor winding extends out of the rotor core in the axial direction of the rotor; a first winding support ring and a second winding support ring, which are fixed on the rotation shaft, coaxially rotate with the rotor core and are used for supporting the end part of the winding, are arranged at the two ends of the rotor core; and axial fan blades are arranged inside the first and the second winding support rings. The utility model changes the ventilation structure of the traditional rotor of the doubly-fed generator and combines the fan and the winding support rings, so that the wind current path is shortened, the windage resistance is greatly reduced, the efficiency of the fan blades is improved, the ventilation effect is improved, and the length of the rotation shaft is shortened. Therefore, the utility model lightens the weight of the rotor, reduces the production cost, and provides a more reasonable structure of a leading-out end of the winding.
Description
Technical field
The utility model relates to technical field of motors, specifically, relates to a kind of double-fed generator rotor.
Background technology
Along with the progressively increase of wind-driven generator single-machine capacity, the heat dissipation capacity of each parts also will increase greatly in the generator, how effectively solve the temperature rise bottleneck of generator, become one of key issue that wind-driven generator further develops.At present in the motor manufacturing the most extensive employing be to be the air cooling system of coolant with the air.
Adopt the electric machine structure of air cooling system simple, cost is lower, its shortcoming be cooling effect than water-cooled difference, the frictional dissipation that causes in motor is bigger, adopt the structure type of air cooled ventilating system very various, illustrate from following several aspects with regard to its basic characteristics:
1) open circuit cooling (promptly freely circulating) or closed circuit cooling (being closed circulation),
2) radially, axial and combined ventilation system.
According to the direction that cooling air in the motor flows, air cooling system can be divided into radially, axially and mix (directly, axially) three kinds.The present wind-driven generator cooling technology that adopts, wind turbine generator generally adopts the type of cooling of air blast cooling and liquid cooling, and air blast cooling is meant by in the wind-driven generator rotating shaft fan being set.
By radial ventilation, air enters motor by bilateral symmetry, and major part is through stator coil end, rotor yoke wind path, rotor radial air channel, stator radial passage, after the discharge of stator core middle part.This wind path structure is because each transportation work style of symmetrical air intake only need be through half core length, and for the lower large-size machine of rotor linear velocity, generally need the fan rotation be installed in two ends of rotor and produce enough cooling air quantities.
This aeration structure generally is used for large-size machine, and the rotor air channel can be taked alignment and be staggered dual mode.The difference of this dual mode is: higher in the rotor linear velocity, rotor wind blade energy of rotation produces under the situation of sufficiently high blast, the form that should as far as possible adopt stator and rotor air channel sheet to stagger, can force the cooling air air gap of axially flowing through like this, reach better cooling effect, but also can prevent the whistle cry that the rotor air channel may cause when aliging.
No matter which kind of mode because the coil of double-fed generator rotor need support at rotor arranged outside support ring, makes fan must be arranged on the outside of support ring, and the distinguished and admirable path between fan and the rotor just becomes very long, makes air-cooled poor effect.
The utility model content
The purpose of this utility model provides a kind of rotor of double-fed generator, and longer to solve between existing double-fed generator rotor fan and the rotor distinguished and admirable path, windage is bigger, the problem that air cooling effect is not good.
The technical problem that the utility model solved can realize by the following technical solutions:
The double-fed generator rotor, comprise rotating shaft, rotating shaft is provided with rotor core, rotor core is stretched out along rotor axial in the end of rotor winding, it is characterized in that: the two ends of rotor core are provided with and are fixed in the rotating shaft with the rotor core coaxial rotation, support the first winding support ring and the second winding support ring of winding overhang, and the inside of the first winding support ring and the second winding support ring is provided with axial fan blade.
In the utility model, the axial fan blade in the described first winding support ring and the second winding support ring is the direction setting towards the rotor air-supply.
The described second winding support ring is arranged on the exit of winding, and its outer surface is provided with the ring-type rib away from a side of rotor, carries out spacing with the winding to exit.
The described second winding support ring is provided with the winding stator away from the end face of rotor one side, fixes with the winding to exit.
The rotating shaft in the described second winding support ring outside is a hollow-core construction, and rotating shaft is provided with at least one entrance hole, and the rotor winding stretches in the rotating shaft by entrance hole.
The utility model, changed the aeration structure of original double-fed generator rotor, fan and winding support ring are merged, reduce distinguished and admirable path, reduced windage significantly, improved the efficient of fan blade, improve ventilation effect, shorten the length of rotating shaft simultaneously, not only alleviate the weight of rotor but also reduced production cost, the structure of winding exit is also more reasonable.
Description of drawings
Fig. 1 is a perspective view of the present utility model.
Fig. 2 is that the utility model is along rotating shaft axial arrangement schematic diagram.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the right view of Fig. 2.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1 and Figure 2, a kind of double-fed generator rotor comprises rotating shaft 1, and rotating shaft 1 is provided with rotor core 2, and rotor core 2 is provided with rotor winding 3, and this structure with general double-fed wind power generator rotor is identical.Rotor core 2 is axially stretched out along rotor 1 in the end of rotor winding 3, the end of rotor winding 3 is supported by the winding support ring that is arranged on rotor core 2 two ends, the first winding support ring 4 is fixed in the rotating shaft in Fig. 1 and Fig. 2 rotor iron core 2 left sides, and the second winding support ring 5 is fixed in the rotating shaft on rotor core 2 right sides.Like this, the first winding support ring 4 and the second winding support ring 5 are coaxial settings with rotor core 2, when rotating shaft 1 is rotated, the first winding support ring 4 and the second winding support ring 5 and rotor core 2 coaxial rotation, the first winding support ring 4 and the second winding support ring 5 remain constant with the relative position of rotor core 2 and rotor winding 3.
Referring to Fig. 3 and Fig. 4, the inside of the first winding support ring 4 is provided with axial fan blade 41, the inside of the second winding support ring 5 is equipped with axial fan blade 51, axial fan blade 41 axial fan blade 51 are the direction setting towards the rotor air-supply, promptly when rotor rotation, the fan blade of the first winding support ring 4 and the second winding support ring 5 is all blown towards rotor.Like this, the axial fan blade 41 of the first winding support ring 4 and the first winding support ring 5 and 51 direction should be opposite, belong to prior art about the direction of blade and the relation of rotation direction, are not repeated at this.By such setting, existing rotor fan and winding support ring are merged, not only reduced distinguished and admirable path, reduced windage, shorten the length of rotating shaft 1 simultaneously, not only alleviate the weight of rotor but also reduced production cost.
Again referring to Fig. 1 and Fig. 2, in the present embodiment, rotor winding 3 will be drawn from this side of the second winding support ring 5, and the outer surface of the second winding support ring 5 is provided with ring-type rib 52 away from a side of rotor, so that the winding of drawing is carried out spacing (winding not being drawn among the figure).The winding of drawing strides across ring-type rib 52 and fixes away from the winding stator 53 on rotor one side end face by the second winding support ring 5 is set again.
The rotating shaft 1 in the second winding support ring, 5 outsides is a hollow-core construction, rotating shaft 1 is provided with at least one entrance hole 11, be provided with 3 entrance holes 11 (two entrance holes wherein not seeing are at the rotating shaft opposite side) along rotating shaft 1 interval 120 degree in the present embodiment, rotor winding 2 stretches in the rotating shaft 1 by three entrance holes 11, makes that like this deriving structure of winding is also more reasonable.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. double-fed generator rotor, comprise rotating shaft, rotating shaft is provided with rotor core, rotor core is stretched out along rotor axial in the end of rotor winding, it is characterized in that: the two ends of rotor core are provided with and are fixed in the rotating shaft with the rotor core coaxial rotation, support the first winding support ring and the second winding support ring of winding overhang, and the inside of the first winding support ring and the second winding support ring is provided with axial fan blade.
2. double-fed generator rotor as claimed in claim 1 is characterized in that: the axial fan blade in the described first winding support ring and the second winding support ring is the direction setting towards the rotor air-supply.
3. double-fed generator rotor as claimed in claim 1 or 2 is characterized in that: the described second winding support ring is arranged on the exit of winding, and its outer surface carries out spacing ring-type rib away from the winding that a side of rotor is provided with exit.
4. double-fed generator rotor as claimed in claim 3 is characterized in that: the described second winding support ring is provided with the winding stator that the winding of exit is fixed away from the end face of rotor one side.
5. double-fed generator rotor as claimed in claim 4 is characterized in that: the rotating shaft in the described second winding support ring outside is a hollow-core construction, and rotating shaft is provided with at least one entrance hole, and the rotor winding stretches in the rotating shaft by entrance hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202950535U CN201656596U (en) | 2009-12-25 | 2009-12-25 | Rotor of doubly-fed generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202950535U CN201656596U (en) | 2009-12-25 | 2009-12-25 | Rotor of doubly-fed generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656596U true CN201656596U (en) | 2010-11-24 |
Family
ID=43121834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202950535U Expired - Fee Related CN201656596U (en) | 2009-12-25 | 2009-12-25 | Rotor of doubly-fed generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201656596U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166405A (en) * | 2013-03-29 | 2013-06-19 | 沈阳工业大学 | Cage barrier spliced outer rotor stator double-winding alternating current motor and control method thereof |
| CN112636535A (en) * | 2020-12-16 | 2021-04-09 | 中车株洲电机有限公司 | Wind driven generator and in-situ ventilation system for wind driven generator |
-
2009
- 2009-12-25 CN CN2009202950535U patent/CN201656596U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166405A (en) * | 2013-03-29 | 2013-06-19 | 沈阳工业大学 | Cage barrier spliced outer rotor stator double-winding alternating current motor and control method thereof |
| CN103166405B (en) * | 2013-03-29 | 2015-08-12 | 沈阳工业大学 | Cage hinders assembled outer rotor stator double winding alternating current machine and control method thereof |
| CN112636535A (en) * | 2020-12-16 | 2021-04-09 | 中车株洲电机有限公司 | Wind driven generator and in-situ ventilation system for wind driven generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20171225 |