CN201590737U - Double-rotor generator with internal air cooling function - Google Patents

Double-rotor generator with internal air cooling function Download PDF

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Publication number
CN201590737U
CN201590737U CN200920282498XU CN200920282498U CN201590737U CN 201590737 U CN201590737 U CN 201590737U CN 200920282498X U CN200920282498X U CN 200920282498XU CN 200920282498 U CN200920282498 U CN 200920282498U CN 201590737 U CN201590737 U CN 201590737U
Authority
CN
China
Prior art keywords
rotor
generator
housing
external rotor
radiating groove
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.)
Expired - Fee Related
Application number
CN200920282498XU
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Chinese (zh)
Inventor
廖恩荣
李更生
沈沛
杨虎
黄晓辉
王中
李志国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing High Accurate Drive Electromechanical Automation Equipment Co Ltd
Original Assignee
Nanjing High Accurate Drive Electromechanical Automation Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing High Accurate Drive Electromechanical Automation Equipment Co Ltd filed Critical Nanjing High Accurate Drive Electromechanical Automation Equipment Co Ltd
Priority to CN200920282498XU priority Critical patent/CN201590737U/en
Application granted granted Critical
Publication of CN201590737U publication Critical patent/CN201590737U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a double-rotor generator with internal air cooling function. An outer rotor and an inner rotor coaxially sleeved with each other are arranged in a housing, wherein, the inner rotor adopts a hollow cylinder body; an armature is arranged on the outer rotor; an magnetic pole is arranged in the inner rotor; the outer rotor is supported on the housing through a bearing; two ends of the outer rotor extend out of the housing; the power input end of the outer rotor is connected with a reverse drive, and the other end thereof is provided with the output slip ring of the armature and an electric brush; the inner rotor is supported and fixed on an input shaft through a rib; the input shaft butted with a forward drive is supported in the outer rotor through a bearing; heat dissipation holes are formed at two ends of the housing; and an exhaust fan blade is fixedly arranged on the input shaft of the hollow cylinder body of the inner rotor.

Description

Internally air-cooled dual-rotor generator
Technical field
The utility model relates to a kind of motor, especially a kind of generator of internally air-cooled dual-rotor.
Background technology
In today of fast development, the fast development of every profession and trade has caused the rapid increase of energy resource consumption, and the development and utilization of the energy becomes the focus that people pay close attention to.In the utilization of new forms of energy, the utilization of wind energy is practical the most.But the frequency stabilization that the instability of wind-force and electrical network require has formed outstanding contradiction.In numerous solutions, variable speed constant frequency is a generation mode wherein commonly used.
In variable-speed constant-frequency wind power generation mode now: dual feedback wind power generation system and direct-drive wind power system become two kinds of main modes that people adopt.
The dual feed wind electricity generation system is based on wire-wound asynchronous motor (double feedback electric engine), its stator winding is inserted common frequency power network, the rotor winding provides frequency, phase place, the variable power supply of amplitude by frequency converter, realize the AC excitation of motor, the electricity generation system of this moment can be regulated the frequency of exciting current according to the rotation speed change of wind energy conversion system, realization constant frequency output, utilized simultaneously stator field directional vector control realized the power factor adjusting.Double feedback electric engine stator in this system is fixed on the electric machine stand, rely on the generating of rotor high-speed rotating excitation, and the wind energy conversion system output speed is lower, need realize raising speed by the raising speed gear box.But the speed ratio of general raising speed gear box is bigger, and bigger speed ratio has increased progression, tooth tricks and the deadweight of gear box, and system cost is increased, and has influenced the reliability of gear box and system.
Direct-drive wind power system is based on the low-speed permanent-magnet synchronous generator, and prime mover directly is connected with the rotor of generator, and the frequency of stator winding output is become direct current with the AC rectification of rotation speed change, is reverse into the alternating current output with the electrical network same frequency again.This system need add a jumbo frequency converter owing to be that total power changes, and investment is big, the harmonic content height.The rotating speed of permanent magnet generator is slow in addition, causes the generator volume excessive, and system cost is too high.Though it is the efficient height in theory, reliable operation, the high-power unit of practical application has certain limitation.
No matter be the double-fed electricity generation system, or the direct-drive type electricity generation system, adopt internally air-cooledly, improve the mode of operation of armature and magnetic field speed of related movement simultaneously by the birotor mode, there is no report.
Summary of the invention
The purpose of this utility model is: the problem at traditional double-fed electricity generation system and the existence of direct-drive type electricity generation system proposes a kind of internally air-cooled dual-rotor generator.
The object of the present invention is achieved like this: a kind of internally air-cooled dual-rotor generator, comprise housing, armature, magnetic pole, and it is characterized in that:
A) contain the external rotor and the internal rotor of concentric suit in the housing, wherein, internal rotor is hollow cylindrical shell, and external rotor is provided with armature, and internal rotor is provided with magnetic pole;
B) in housing, housing is stretched out at its two ends to external rotor by bearings, and the power intake of external rotor docks with reverse drive, and the other end is provided with the output slip ring and the brush of armature; Internal rotor is supported and fixed on the power shaft by muscle, and in external rotor, power shaft docks with forward drive power shaft by bearings;
C) the housing two ends are provided with louvre, are arranged on the power shaft of the hollow cylindrical shell of internal rotor to be set with the air ejector fan blade.
In the utility model: the radiating groove that connects before and after the external rotor outer surface is evenly distributed with, each radiating groove is parallel to each other, and the air inlet of each radiating groove is provided with a wind-guiding fan blade.
In the utility model: the angle α of the vertical section of radiating groove and external rotor outer surface is 2~45 degree, and according to the external rotor rotation direction, the air outlet of radiating groove lags behind air inlet.
In the utility model: described generator is wind-driven generator or turbo generator or hydroelectric generator or thermoelectric generator, or the generator in the nuclear power station.
Advantage of the present utility model is: owing to adopt the dual-rotor structure of coaxial counter-rotating, complete machine structure is compact more, and volume is littler, and it can make the armature of generator rotate according to different directions with magnetic field, improved the speed of related movement between them greatly, made the generator volume little a lot; Because the internal rotor of generator adopts the hollow cylinder body structure, its two ends are equipped with louvre, are set with air exhaust blade on the power shaft in the hollow cylindrical shell, can reduce the working temperature of internal rotor in the work; Because the radiating groove that connects before and after the outer rotor case surface is evenly distributed with, the air inlet of each radiating groove is provided with a wind blade, can reduce the working temperature of external rotor in the work.The present invention compares with the direct-drive type electricity generation system with at present traditional double-fed electricity generation system, has tangible technical advantage.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the arrangement mode of the utility model China and foreign countries rotor surface wind guide and heat dispersion groove;
Fig. 3 is the air inlet of wind guide and heat dispersion groove and the compound mode schematic diagram of wind blade.
Among the figure: 1, power shaft, 2, ring flange, 3, external rotor, 4, internal rotor, 5, the air ejector fan blade, 6, slip ring and brush, 7, housing, 8, radiating groove, 9, wind blade, 10, guard ring, 11, preceding louvre, 12, the back louvre.
Embodiment
The non-limiting specific embodiment of the utility model that discloses of accompanying drawing is done to describe further to the present invention below in conjunction with accompanying drawing.
As seen from Figure 1, contain the external rotor 3 and the internal rotor 4 of concentric suit in the housing 7 of the present utility model, wherein, internal rotor 4 is hollow cylindrical shell, and external rotor 3 is provided with armature, and internal rotor 4 is provided with magnetic pole; In housing 7, housing 7 is stretched out at its two ends to external rotor 3 by bearings, and an end of external rotor 3 docks with reverse drive by ring flange 2, and the other end is provided with the output slip ring and the brush 6 of armature; Internal rotor 4 is supported and fixed on the power shaft 1 by muscle, and in external rotor 3, power shaft 1 docks with forward drive power shaft 1 by bearings; The two ends of housing 7 are respectively equipped with preceding louvre 11, back louvre 12, are arranged on the power shaft 1 of internal rotor 4 hollow cylindrical shells to be set with air ejector fan blade 5.
By Fig. 2 and Fig. 3 as seen, the radiating groove 8 that connects before and after external rotor 3 outer surfaces are evenly distributed with, each radiating groove 8 is parallel to each other, and the air inlet of each radiating groove 8 is provided with a wind blade 9.During concrete enforcement, radiating groove 8 is 2~45 degree with the angle α of the vertical section of external rotor 3 outer surfaces, and according to the external rotor rotation direction, the air outlet of radiating groove 8 lags behind air inlet.
In the present embodiment, external rotor 3 outer rings are enclosed with guard ring 10, and described guard ring 10 is covered on radiating groove 8 beads.
During concrete enforcement, described generator can be selected wind-driven generator or turbo generator or hydroelectric generator or thermoelectric generator or the like.

Claims (4)

1. an internally air-cooled dual-rotor generator comprises housing, armature, magnetic pole, it is characterized in that:
A) contain the external rotor and the internal rotor of concentric suit in the housing, wherein, internal rotor is hollow cylindrical shell, and external rotor is provided with armature, and internal rotor is provided with magnetic pole;
B) in housing, housing is stretched out at its two ends to external rotor by bearings, and the power intake of external rotor docks with reverse drive, and the other end is provided with the output slip ring and the brush of armature; Internal rotor is supported and fixed on the power shaft by muscle, and in external rotor, power shaft docks with forward drive power shaft by bearings;
C) the housing two ends are provided with louvre, are arranged on the power shaft of the hollow cylindrical shell of internal rotor to be set with the air ejector fan blade.
2. internally air-cooled dual-rotor generator according to claim 1 is characterized in that: the radiating groove that connects before and after the external rotor outer surface is evenly distributed with, and each radiating groove is parallel to each other, and the air inlet of each radiating groove is provided with a wind blade.
3. internally air-cooled dual-rotor generator according to claim 2 is characterized in that: the angle α of the vertical section of radiating groove and external rotor outer surface is 2~45 degree, and according to the external rotor rotation direction, the air outlet of radiating groove lags behind air inlet.
4. according to the described internally air-cooled dual-rotor generator of one of claim 1~3, it is characterized in that: described generator is wind-driven generator or turbo generator or hydroelectric generator or thermoelectric generator, or the generator in the nuclear power station.
CN200920282498XU 2009-12-21 2009-12-21 Double-rotor generator with internal air cooling function Expired - Fee Related CN201590737U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920282498XU CN201590737U (en) 2009-12-21 2009-12-21 Double-rotor generator with internal air cooling function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920282498XU CN201590737U (en) 2009-12-21 2009-12-21 Double-rotor generator with internal air cooling function

Publications (1)

Publication Number Publication Date
CN201590737U true CN201590737U (en) 2010-09-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920282498XU Expired - Fee Related CN201590737U (en) 2009-12-21 2009-12-21 Double-rotor generator with internal air cooling function

Country Status (1)

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CN (1) CN201590737U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107240983A (en) * 2017-08-15 2017-10-10 桂林航天工业学院 A kind of remarkable automobile motor of heat dispersion
CN113315296A (en) * 2020-02-27 2021-08-27 西门子歌美飒可再生能源公司 Wind turbine outer rotor housing with enhanced magnet cooling

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107240983A (en) * 2017-08-15 2017-10-10 桂林航天工业学院 A kind of remarkable automobile motor of heat dispersion
CN113315296A (en) * 2020-02-27 2021-08-27 西门子歌美飒可再生能源公司 Wind turbine outer rotor housing with enhanced magnet cooling
EP3872967A1 (en) * 2020-02-27 2021-09-01 Siemens Gamesa Renewable Energy A/S External rotor house of wind power generator with enhanced magnet cooling

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Nanjing Juneng Electric Control Automation Equipment Manufacturing Co., Ltd.

Assignor: Nanjing High Accurate Drive Electromechanical Automation Equipment Co., Ltd.

Contract record no.: 2012320000642

Denomination of utility model: Internally air-cooled dual-rotor generator

Granted publication date: 20100922

License type: Exclusive License

Record date: 20120523

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100922

Termination date: 20121221