CN102427284B - Wind-driven generator - Google Patents
Wind-driven generator Download PDFInfo
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- CN102427284B CN102427284B CN201110309987.1A CN201110309987A CN102427284B CN 102427284 B CN102427284 B CN 102427284B CN 201110309987 A CN201110309987 A CN 201110309987A CN 102427284 B CN102427284 B CN 102427284B
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Abstract
The invention provides a wind-driven generator, which comprises a motor, a cabin cover which is installed on the rear side of the motor, a flow guide cover which is installed on the front side of the motor, and an external radiating shell and a circulating fan which are arranged on the external side of the flow guide cover through supporting structures. The motor comprises a motor main shaft, a rotor which is installed on the main shaft and a stator which is arranged on the external side of the rotor. The motor is provided with an axial ventilation passage which is communicated with the front space and the rear space of the motor. A flow guide cover sandwich layer is formed between the external radiating shell and the flow guide cover, is communicated with an air gap between the stator and the rotor and is communicated with the axial ventilation passage. Since the wind-driven generator uses the sandwich layer structure and the motor main shaft as a flow passage for coolants and as a radiating passage for heat exchange with external natural cooling air, the goals of utilizing the external natural cooling air, realizing compact and reasonable layout and reducing the cost are achieved.
Description
Technical field
The present invention relates to a kind of wind-driven generator, relate in particular to a kind of wind-driven generator with ventilation cooling structure.
Background technology
Generator can produce loss in running, and this part loss will be presented as caloric value, if can not in time dissipation of heat be gone out, motor will be overheated, and temperature rise is increased, and causes Insulation Problems.Therefore, in time and effectively the dissipation of heat in motor being gone out is the prerequisite that motor runs well.
Current generator, mainly adopts air cooling, water-cooling pattern or sky-water combination cooling mode to carry out cooling.
Water-cooled mainly leans against motor internal and buries water pipe underground or waterway channel is set on support, water carrys out cooling motor iron core, cooling water flows along waterway pipe under the effect of water pump, and is undertaken entering motor after heat exchange by air/water cooler again, realizes a cool cycles.Because water-cooling system need to be buried water pipe underground in generator iron core, water pipe head processing is crucial, and water-cooling system requires very high to production technology, probably produce leakage accident if dealt with improperly, destroys the insulation of generator.
Air cooling mainly utilizes air for coolant, entering the axial ventilation road of motor internal or radial ducts by the import and export passage of pipeline or motor completes cooling rear hot blast and will enter hollow cooler, carry out turning back to motor internal after heat exchange, complete a cool cycles.The closed type of cooling having adopted in prior art has the pylon type of cooling and the engine room cover type of cooling.
Fig. 1 shows the pylon type of cooling.The pylon type of cooling can utilize pylon as heat-sink unit, and air is dispelled the heat fully by the cooling channel being arranged in pylon.But, the cooling channel of the pylon type of cooling is long, pylon wall thickness is unfavorable for heat radiation thereby causes area of dissipation needs very large simultaneously, this just makes to be heat dissipation channel from tower top to pylon, cause larger windage, therefore the power consumption of fan motor is very large, needs very high cost to make pylon interlayer simultaneously, and cost is increased.
Fig. 2 shows the engine room cover type of cooling.For the engine room cover type of cooling, the cooling main heat conductivility by engine room cover completes, and heat transmission between engine room cover and generator is radiation and the heat conduction by air, and distribute heat is few like this, and radiating efficiency is low.Engine room cover adopts metal material completely simultaneously, and for proof strength, thickness needs very thick, and cost is high like this, and heat conductivility is also poor.
If adopt the open type type of cooling, do not need hollow cooler, directly extraneous wind is incorporated into generator, cold wind is got rid of outside cabin.This advantage is that coolant temperature is low, does not need extra hollow cooler, and cost is low, simple in structure, but extraneous cold air directly enters and can bring dust storm, dust, water, salt fog etc. into, unfavorable to electrical machine insulation.
In view of the foregoing, need the rational wind-driven generator of a kind of design of Cooling System, the electric machine temperature rise of this wind-driven generator can be reduced effectively.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of wind-driven generator with ventilation cooling structure.Described wind-driven generator comprises motor, be arranged on the engine room cover of motor rear side, be arranged on the kuppe of motor front side, be arranged on external cooling shell and the circulating fan in kuppe outside by supporting construction, described motor comprises electric machine main shaft, be arranged on the rotor on main shaft and be arranged on the stator in rotor outside, described motor is provided with and is communicated with the front space of motor and the axial ventilation road of back space, between described external cooling shell and kuppe, form kuppe interlayer, described kuppe interlayer is communicated with the air gap between stator and rotor, and be communicated with axial ventilation road.
Described external cooling shell can be made up of the material of thermal conductivity > 80W/mk.
Described stator outer surface can highlight from the outer surface of engine room cover.
Described circulating fan can be arranged at least one place in rear-end of spindle, main shaft, in kuppe front end.
On the surface of described external cooling shell, can be provided with radiation tooth or fold.
Described main shaft can be hollow structure, and described hollow structure forms described axial ventilation road.
Described axial ventilation road can be from kuppe and draws and by the pipeline of stator support and rotor field spider.
Described external cooling shell can be made up of the metal of thermal conductivity > 80W/mk.
The quantity of described circulating fan can be one or more connection in series-parallel.
Described circulating fan can be aerofoil fan or centrifugal fan.
According to above-mentioned wind-driven generator, utilize the natural air cooled type of cooling, sandwich establishment structure in impeller place kuppe, the main shaft of motor is hollow rotating shaft, utilizes sandwich and the electric machine main shaft circulation passage as coolant, is also and the natural air cooled heat dissipation channel exchanging in the external world simultaneously, thereby reach utilized extraneous natural air cooled, compact in design is reasonable, the object reducing costs, and the present invention can adopt on direct driving motor or the larger motor of the lower diameter of rotating speed.
Accompanying drawing explanation
By the description of exemplary embodiment being carried out below in conjunction with accompanying drawing, above-mentioned purpose of the present invention and feature will become clear and easy to understand, wherein:
Fig. 1 shows the wind-driven generator of the employing pylon type of cooling of the prior art;
Fig. 2 shows the wind-driven generator of the employing engine room cover type of cooling of the prior art;
Fig. 3 shows the wind-driven generator with ventilation cooling structure according to the embodiment of the present invention.
Wherein, the implication of label is as follows:
1-kuppe interlayer; The kuppe of front portion, 2-cabin; 3-motor gas-gap; 4-circulating fan; 5-engine room cover; 6-external cooling shell; 7-impeller; 8-pylon; 9-generator amature; 10-generator unit stator; 11-generator shaft; 12-generator unit stator outer surface; 13-engine room inside.
Embodiment
Below, describe embodiments of the invention in detail with reference to accompanying drawing.
Fig. 3 shows ventilation cooling structure according to an exemplary embodiment of the present invention.
In the embodiment shown in fig. 3, be described as an example of direct-drive aerogenerator example.As shown in Figure 3, according to an exemplary embodiment of the present invention wind-driven generator comprise motor, be arranged on motor rear side engine room cover 5, be arranged on motor front side kuppe 2, be arranged on kuppe 2 outsides external cooling shell 6, be arranged on the circulating fan 4 of engine room inside.Between described external cooling shell 6 and kuppe 2, form kuppe interlayer 1.Described motor comprises electric machine main shaft 11, be arranged on rotor 9 on main shaft 11, be arranged on the stator 10 in rotor 9 outsides, described motor is provided with and is communicated with the inner space of engine room cover 5 and the axial ventilation road of kuppe interlayer 1, described kuppe interlayer 1 simultaneously also with stator and rotor between air gap 3 be communicated with.
According to the wind-driven generator of the embodiment of the present invention, described main shaft 11 is hollow shaft, thereby forms main shaft air duct, and described main shaft air duct fluid is communicated with front space and the back space of motor.
In addition, the outer surface 12 of stator 10 is projected into the outside of engine room cover 5, and like this, the area of dissipation of stator 9 increases, and heat-sinking capability is greatly improved.
Circulating fan 4 can be aerofoil fan or centrifugal fan, and quantity can one or more connection in series-parallel.In the present embodiment, circulating fan 4 is arranged on the opposite side relative with kuppe 2 of main shaft 11.Obviously, circulating fan 4 also can be arranged in main shaft 11, or is arranged on the front end of kuppe 2.
In the time that circulating fan 4 turns round, the cold air in engine room cover 5, under the swabbing action of circulating fan 4, enters air gap 3 inside of motor, and after rotor heating amount and a part of stator caloric value are taken away, hot blast will enter in kuppe interlayer 2.For example, because kuppe 2 external cooling shells 6 can be good (by heat conductivility, thermal conductivity > 80W/mk) metal make, thereby complete the heat exchange between hot blast and extraneous natural cold wind by external cooling shell 6, the cold wind that completes heat exchange again from the air duct of main shaft 11 by and after circulating fan 4, get back in engine room inside 13, shell by engine room cover 5 and outside are carried out heat exchange and become cold wind after being completed further heat radiation again, then under the effect of circulating fan 4, enter once circulation.
Because the main caloric value of motor concentrates on stator 10 and rotor 9, therefore, the present invention, using the stator surface of the air gap of motor 3 and motor 12 as heat dissipation channel, can take away most of heat.
For realizing sandwich, be provided with support structure in the centre of kuppe interlayer 1, anterior cabin kuppe 2 is connected with external cooling shell 6.
In design, external cooling shell 6 also can adopt heat dispersion good (for example, thermal conductivity > 80W/mk) nonmetallic materials substitute, the surface of external cooling shell 6 can be smooth also can have radiation tooth or fold to increase area of dissipation.
In addition, also can draw and replace by the pipeline of stator support and rotor field spider from cabin kuppe by other as the main shaft air duct of generator coolant path.
Technical scheme of the present invention at least tool has the following advantages:
1, heat dissipation channel connection and reasonable arrangement compactness, motor gas-gap directly faces toward the interlayer entrance of cabin kuppe, avoided arranging pipeline around motor, make whole cabin more compact, whole outlet is simultaneously distributed in motor one week, and be not only single outlet, make like this air quantity distribute more reasonable, motor temperature rise is everywhere even;
2, the main shaft that return air wind path is generator, spindle design is hollow form, in the effect of performance main shaft, is also return air wind path, has saved the pipeline that is used as return air wind path, makes compact conformation, global design more simple;
3, utilize natural air cooled, by the thermal conductive resin of external cooling shell, can be effectively by cooling the hot-air of motor internal.Utilize natural air cooled cooling stator outer surface, the heat producing by two kinds of approach energy effective cooling motors simultaneously;
4, cooling system has automatic regulation function, and when extraneous wind is little, electric power generation amount is little, and caloric value is also low, and the cooling amount of natural wind is also low, when the motor feels hot amount is when high, is also extraneous wind speed large time, and at this moment heat dissipation capacity is also high.
5, reasonably wind path is arranged the natural air cooled opposite direction outside cold air and the kuppe interlayer making in kuppe interlayer, forms adverse current in outside radiation shell both sides, has good radiating effect;
6, save heat dissipation channel, radiator, windage is little simultaneously, and fan power is low, makes whole cooling system have the advantages that cost is low, efficiency is high, maintenance is few;
7, coolant, all in engine room inside circulation, can not introduced extraneous natural wind, can avoid like this invasion and attack of dust, water and salt fog, and engine room inside equipment and generator are had to good protective effect.
Although illustrated and described the present invention, it should be appreciated by those skilled in the art, in the situation that not departing from spirit of the present invention and principle, can make modification to exemplary embodiment.
Claims (10)
1. a wind-driven generator, it is characterized in that, described wind-driven generator comprises motor, be arranged on the engine room cover of motor rear side, be arranged on the kuppe of motor front side, be arranged on external cooling shell and the circulating fan in kuppe outside by supporting construction, described motor comprises main shaft, be arranged on the rotor on main shaft and be arranged on the stator in rotor outside, described motor is provided with the axial ventilation road that is communicated with the space of motor front side and the space of motor rear side, between described external cooling shell and kuppe, form kuppe interlayer, described kuppe interlayer is communicated with the air gap between stator and rotor, and be communicated with axial ventilation road.
2. wind-driven generator according to claim 1, is characterized in that, described external cooling shell is made up of the material of thermal conductivity >80W/mk.
3. wind-driven generator according to claim 1, is characterized in that, described stator outer surface highlights from the outer surface of engine room cover.
4. wind-driven generator according to claim 1, is characterized in that, described circulating fan is arranged at least one place in rear-end of spindle, main shaft, in kuppe front end.
5. wind-driven generator according to claim 1, is characterized in that, is provided with radiation tooth or fold on the surface of described external cooling shell.
6. according to the wind-driven generator described in any one in claim 1 to 5, it is characterized in that, described main shaft is hollow structure, and described hollow structure forms described axial ventilation road.
7. according to the wind-driven generator described in any one in claim 1 to 5, it is characterized in that, described axial ventilation road is to draw and by the pipeline of stator support and rotor field spider from kuppe.
8. according to the wind-driven generator described in any one in claim 1 to 5, it is characterized in that, described external cooling shell is made up of the metal of thermal conductivity >80W/mk.
9. according to the wind-driven generator described in any one in claim 1 to 5, it is characterized in that, described circulating fan is one, or multiple circulating fan connection in series-parallel.
10. according to the wind-driven generator described in any one in claim 1 to 5, it is characterized in that, described circulating fan is aerofoil fan or centrifugal fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110309987.1A CN102427284B (en) | 2011-10-13 | 2011-10-13 | Wind-driven generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110309987.1A CN102427284B (en) | 2011-10-13 | 2011-10-13 | Wind-driven generator |
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| Publication Number | Publication Date |
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| CN102427284A CN102427284A (en) | 2012-04-25 |
| CN102427284B true CN102427284B (en) | 2014-06-18 |
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| CN201110309987.1A Active CN102427284B (en) | 2011-10-13 | 2011-10-13 | Wind-driven generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107528423B (en) * | 2017-10-17 | 2024-04-09 | 广州市香港科大霍英东研究院 | Closed permanent magnet generator for small wind power generation |
| CN110433929A (en) * | 2019-01-01 | 2019-11-12 | 仲从宝 | On set two space pump drainage wind-cooling heat dissipating meat grinder of head |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599839A (en) * | 2001-05-18 | 2005-03-23 | 阿洛伊斯·沃本 | Cooling device for a wind turbine generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9303599L (en) * | 1993-11-02 | 1995-05-03 | Electrolux Ab | Device for cooling an electric motor driven turbo fan assembly |
| JP2000333410A (en) * | 1999-05-19 | 2000-11-30 | Mitsubishi Electric Corp | Rotating electric machine |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599839A (en) * | 2001-05-18 | 2005-03-23 | 阿洛伊斯·沃本 | Cooling device for a wind turbine generator |
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| CN102427284A (en) | 2012-04-25 |
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