CN103490558B - Direct wind-driven generator cooling system - Google Patents
Direct wind-driven generator cooling system Download PDFInfo
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- CN103490558B CN103490558B CN201310432380.1A CN201310432380A CN103490558B CN 103490558 B CN103490558 B CN 103490558B CN 201310432380 A CN201310432380 A CN 201310432380A CN 103490558 B CN103490558 B CN 103490558B
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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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Abstract
Disclosure one direct wind-driven generator cooling system.The direct wind-driven generator cooling system of the present invention, it is on the cabin be provided with direct wind-driven generator, offer air suction inlet, engine room inside is provided with radiator fan host cavity, air suction inlet is connected by intake line with the entrance of radiator fan host cavity, to utilize the radiator fan being arranged in radiator fan host cavity to suck extraneous air from air suction inlet, at air suction inlet, air filter is set, the outlet of radiator fan host cavity is towards at least one in rotor and stator, air port is set out being positioned on the cabin of radiator fan host cavity opposition side relative to rotor and stator.According to the present invention, by extraneous air is drawn into inside wind-driven generator, the crucial heat generating components of direct cooling air power generator, good heat dissipation effect.
Description
Technical field
The present invention relates to technical field of wind power, particularly to a kind of cooling system being applied to direct wind-driven generator.
Background technology
Direct wind-driven generator, is a kind of electromotor directly driven by wind-force, and also known as gearless wind motor, this electromotor adopts multipolar dynamo and impeller to be directly connected to the mode being driven, and removes this legacy device of gear-box from.Owing to gear-box is the parts that easily overload is higher with premature breakdown rate in MW class wind turbine at present, therefore, there is no the direct-drive type wind motor of gear-box, possess low wind speeds high efficiency, low noise, high life, reduction unit volume, reduce the plurality of advantages such as operation expense.
Direct wind-driven generator is directly connected to arranging vaned wheel hub, is made up of rotating shaft, rotor, stator etc..Rotating shaft is positioned at the center of rotor, and is fixedly connected with the rotor；Rotating shaft is fixing with wheel hub to be connected, and when making blade drive hub rotation, it is possible to drive axis of rotation, rotor driven rotates simultaneously.Stator is fixed relative to rotor radial.In the course of the work, when rotor rotates, driving and be located at permanent magnet poles in rotor and rotate, thus producing rotating excitation field, producing electromotive force by cutting movement in rotating excitation field stator winding on stator, thus being electric energy by changes mechanical energy.
In the process, rotor and stator can produce substantial amounts of heat.Current direct wind-driven generator cooling system is generally adopted absolutely empty two-way circulating cooling cooling system, there is the shortcoming that parts are lengthy and jumbled, with high costs, radiating efficiency is low.
Summary of the invention
In view of the foregoing, the present invention proposes a kind of novel direct drive cooling system of wind driven generator, reduces cost, improves radiating efficiency.
On the other hand, the present invention provides a kind of direct wind-driven generator cooling system being suitable for outer rotor direct driving wind-driven generator.Direct wind-driven generator is divided into outer rotor form and internal rotor form, if outer rotor form, rotor (is called outer rotor) outside, and stator is in interior (being called inner stator).The direct wind-driven generator cooling system of the present invention is applicable to this outer rotor direct driving wind-driven generator.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of direct wind-driven generator cooling system, the cabin be provided with direct wind-driven generator is offered air suction inlet, engine room inside is provided with radiator fan host cavity, air suction inlet is connected by intake line with the entrance of radiator fan host cavity, to utilize the radiator fan being arranged in radiator fan host cavity to suck extraneous air from air suction inlet, at air suction inlet, air filter is set, the outlet of radiator fan host cavity is towards at least one in rotor and stator, air port is set out being positioned on the cabin of radiator fan host cavity opposition side relative to rotor and stator.
Alternatively, air filter includes the passing away tapered into along Shutter separator, medium effeciency filter and sectional area that air flow sets gradually, and passing away is connected with intake line.
Preferably, the corrugated sheet of Shutter separator forms barb.
Alternatively, kuppe is set at air outlet.
Preferably, kuppe is divided into first paragraph that sectional area is constant and the second segment that sectional area tapers into along air flow, and second segment is towards outer rotor central opening.
A kind of direct wind-driven generator cooling system, for cooling down outer rotor direct driving wind-driven generator, air suction inlet is offered in the cabin being provided with outer rotor direct driving wind-driven generator, engine room inside is provided with radiator fan host cavity, air suction inlet is connected by intake line with the entrance of radiator fan host cavity, to utilize the radiator fan being arranged in radiator fan host cavity to suck extraneous air from air suction inlet, at air suction inlet, air filter is set, inner stator end cap is formed air inlet, the outlet of radiator fan host cavity is connected by air supply duct with the air inlet on inner stator end cap, end cap for outer rotor is formed air outlet.
Alternatively, the through hole corresponding with the radial clearance between inner stator and outer rotor is formed in the radial outside region of end cap for outer rotor.
Alternatively, air filter includes the passing away tapered into along Shutter separator, medium effeciency filter and sectional area that air flow sets gradually, and passing away is connected with intake line.
Preferably, the corrugated sheet of Shutter separator forms barb.
Alternatively, the air outlet on end cap for outer rotor arranges kuppe.
Preferably, kuppe is divided into first paragraph that sectional area is constant and the second segment that sectional area tapers into along air flow, and second segment is towards outer rotor central opening.
According to the present invention, by extraneous air is drawn into inside wind-driven generator, the crucial heat generating components of direct cooling air power generator, radiating effect is better, eliminating the radiator of traditional absolutely empty double loop circulation simultaneously and connect adnexa, making cooling system simpler reliably, cost reduces.And, by the natural air cooled combination with air blast cooling, the cooling effectiveness making wind-driven generator is higher.And, utilize air filter effectively to process extraneous air, it is prevented that the parts of engine room inside are caused damage.And, air filter is carried out modularized design such that it is able to adapt to extraneous various environment.
Accompanying drawing explanation
Fig. 1 a is the bonding state schematic diagram (observing from inner stator side) of inner stator and outer rotor in direct wind-driven generator according to embodiments of the present invention；
Fig. 1 b is the bonding state schematic perspective view (observing from outer rotor side) of inner stator and outer rotor in direct wind-driven generator according to embodiments of the present invention；
Fig. 1 c is the front view of outer rotor in direct wind-driven generator according to embodiments of the present invention；
Fig. 2 is the schematic diagram of direct wind-driven generator group according to embodiments of the present invention；
Fig. 3 is the schematic diagram of direct wind-driven generator cooling system according to embodiments of the present invention；
Fig. 4 a is the axonometric chart of the kuppe of direct wind-driven generator cooling system according to embodiments of the present invention；
Fig. 4 b is the profile of kuppe shown in Fig. 4 a；
Fig. 5 a is the front view of the air filter of direct wind-driven generator cooling system according to embodiments of the present invention；
Fig. 5 b is the top view of air filter shown in Fig. 5 a；
Fig. 5 c is the cut-away view of the Shutter separator in air filter shown in Fig. 5 b.
Detailed description of the invention
Hereinafter, embodiments of the invention are described in detail with reference to the attached drawings.
Direct wind-driven generator is divided into outer rotor form and internal rotor form, if outer rotor form (outer rotor direct driving wind-driven generator), rotor (is called outer rotor) outside, stator is in interior (being called inner stator), if internal rotor form (internal rotor direct wind-driven generator), rotor is in interior (being called internal rotor), and stator (is called external stator) outside.For outer rotor direct wind-driven generator, the present invention is described below.
According to the present invention, extraneous air is drawn into inside wind-driven generator, directly the core component (rotor, stator etc.) of wind-driven generator is cooled down, achieved with better radiating effect.For this, it is necessary first to stator and rotor structure are modified.
Fig. 1 a is the bonding state schematic diagram (observing from inner stator side) of inner stator and outer rotor in direct wind-driven generator according to embodiments of the present invention.
As shown in Figure 1a, outer rotor 20 such as same " bucket " is enclosed within outside inner stator 10.Outer rotor 20 is generally made up of the ferrous material that magnetic conduction is good, and the inwall at " bucket " is fixed with the magnetic pole (not shown) that permanent magnet is made, and " bucket " is exactly the yoke 23 of outer rotor.There is between inner stator 10 and outer rotor 20 predetermined radial clearance.Central authorities at inner stator 10 are fixing connects base 30, and this base 30, for installing the rotating shaft of outer rotor 20, rotates supporting outer rotor 20.Specifically, inner stator 10 according to embodiments of the present invention has inner stator end cap 11, and the composition iron core of inner stator 10, coil etc. are incorporated into this inner stator end cap 11, and said base 30 is also incorporated into this inner stator end cap 11.Inner stator end cap 11 is formed air inlet 12, to introduce extraneous air to direct wind-driven generator is internal, cools down.Air inlet 12 should be avoided base 30 and arrange, and its quantity can suitably be chosen as required, and shown in Fig. 1 a is two, is clearly not limited to this.
Fig. 1 b is the bonding state schematic perspective view (observing from outer rotor side) of inner stator and outer rotor in direct wind-driven generator according to embodiments of the present invention, and Fig. 1 c is the front view of outer rotor in direct wind-driven generator according to embodiments of the present invention.
As shown in fig. 1b and fig. lc, outer rotor 20 outward appearance is bottle cap shape, and cylindrical portion is divided into above-described yoke 23, and the summit portion of " bottle cap " is end cap for outer rotor 21.End cap for outer rotor 21 is used in conjunction with wheel hub (not shown).At this, for the ease of illustrating, being shown without the rotating shaft of outer rotor 21 in the accompanying drawings, it is positioned at the center of outer rotor 20.End cap for outer rotor 21 forms air outlet 22, so that the air being imported into by above-mentioned air inlet 12 is returned to outside wind-driven generator after absorbing heat and becoming steam.Air outlet 22 should be avoided the installation site of wheel hub and arrange, and its quantity can suitably be chosen as required, and shown in Fig. 1 b is eight, is clearly not limited to this.
Furthermore, it is preferred that end cap for outer rotor 21 has outer ring 211 and inner ring 212, it is connected by reinforcement gusset 24 between outer ring 211 and inner ring 212.Thus, between outer ring 211 and inner ring 212, through hole 25 is formed.Under final confined state, the radial clearance between through hole 25 with inner stator 10 and outer rotor 20 is corresponding, to form natural air cooled ventilating duct described later.
The following describes the overall condition of direct wind-driven generator cooling system according to embodiments of the present invention.Fig. 2 is the overall schematic of direct wind-driven generator group according to embodiments of the present invention, and Fig. 3 is the overall schematic of direct wind-driven generator cooling system according to embodiments of the present invention.
As shown in Figures 2 and 3,9 for being arranged on the air suction inlet of bottom, cabin 200,1 is air filter, and 2 is the connection pipeline (hereinafter referred to as intake line) between air filter and radiator fan host cavity, 3 is radiator fan host cavity, 4 is natural air cooled ventilating duct, and 5 is kuppe, and 6 export for kuppe, 7 is blade, and 8 is wheel hub.It is internal that radiator fan host cavity 3 is arranged on cabin 200, is provided with radiator fan 31, and radiator fan 31 can be axial flow blower or centrifugal blower.Radiator fan 31 makes air from air filter 1 intake system, and then motor is cooled down.Symbol 100 in Fig. 2 represents pylon.
Enter the air inlet 12 inner stator end cap 11 from the air draught of radiator fan 31 blowout by air supply duct 30, and discharge from the air outlet 22 of outer rotor 20 after flowing between inner stator 10 and outer rotor 20.Preferably, kuppe 5 is set at air outlet 22, the purpose of kuppe 5 is set when being make hot-air blow out from motor, by influenced by wind pressure windward, blows out from motor smoothly.A kind of optional shape of kuppe 5 is as shown in Figs. 4a and 4b.This kuppe 5 is divided into first paragraph 51 that sectional area is constant and the second segment 52 that sectional area tapers into along air flow, and the kuppe that second segment 52 is formed towards outer rotor 20 center exports 6.
Above-mentioned natural air cooled ventilating duct 4 is made up of the radial clearance between the through hole 25 on end cap for outer rotor 21 and outer rotor 20 and inner stator 10, the air-flow acted on blade 7 enters into the radial clearance between outer rotor 20 and inner stator 10 by the through hole 25 on end cap for outer rotor 21, and flow out from the radial clearance of opposite side, thus outer rotor 20 and inner stator 10 can be cooled down.
Direct wind-driven generator cooling system according to embodiments of the present invention, when ambient temperature is relatively low, it is possible to only relies on and natural air cooled motor is cooled down, and namely cools down by being blown into the wind of natural air cooled ventilating duct 4.Only rely on natural air cooled when cannot be carried out effectively cooling down, it is possible to open radiator fan 31, carry out air blast cooling, with natural air cooled synergy.
According to another variant embodiment, it is convenient to omit natural air cooled ventilating duct 4, on end cap for outer rotor 21, namely do not form through hole 25, rely only on and utilize radiator fan 3 air being drawn within direct wind-driven generator cools down from outside.At this point it is possible to avoid the parts within wind-driven generator to be exposed to outside as far as possible.
On the other hand, along with the development of wind-driven generator, increasing wind-driven generator needs to be based upon high dust storm and high humility height salt fog area.For this application scenarios, the air filter 1 of the present invention can adopt following structure.Certainly, the air filter 1 of the present invention is not limited to the concrete structure of following description, it is possible to suitably select as required.And, when external environment condition preferably time, it is also possible at air suction inlet 9, drainage screen is only set.
Fig. 5 a is the front view of the air filter of direct wind-driven generator cooling system according to embodiments of the present invention, and Fig. 5 b is the top view of air filter shown in Fig. 5 a, and Fig. 5 c is the cut-away view of the Shutter separator in air filter shown in Fig. 5 b.
Shown in as shown in Figure 5 a to 5 c, air filter 1 is mainly made up of Shutter separator 101, medium effeciency filter 102, this three part of passing away 103, and passing away 103 is connected with intake line 2.
Shutter separator 101 is as the term suggests being be made up of corrugated sheet 104 side by side, when moving along a curved path in the passage that corrugated sheet 104 is constituted containing wetly and fog air, under the effect of centrifugal force, inertia force and adhesive force, water droplet and drop in air will be attached on corrugated sheet and form film, then owing to gravity flows downward, thus moisture or other liquid components can be separated from air-flow.And at high wind sandy land, based on identical principle, dust and grit in air also are able to be separated, so as to cooling system of wind driven generator can not be entered.
Preferably, forming barb 105 at corrugated sheet 104 upper surface, barb 105 increases the probability that in air, drop is adsorbed, and to improve separation efficiency, concrete structure is as shown in Figure 5 c.
Medium effeciency filter can adopt F9 medium effeciency filter.
Passing away 103 adopts the shape that cross section tapers into, it is preferred to use trapezoidal shown in Fig. 5 a, and this is to reduce the pressure loss, and also allows for Design and Machining.
According to said structure, Shutter separator 101 is responsible for filtering fine liquid granule and solid particle, and medium effeciency filter 102 is responsible for filtering fine liquid granule and solid particle more.That is, Shutter separator 101 completes primary filter, and medium effeciency filter 102 carries out in-depth filtration.
Accordingly, at high wind sandy land, the dust in air and grit are processed by air filter 1, so as to the cooling system of wind-driven generator can not be entered；In high humility and high salt fog area, the salt fog droplet in air, particle water and some solid particles are processed by air filter 1 so that it is can not enter the cooling system of wind-driven generator.
It addition, can be provided with pressure transducer on air filter 1, pressure transducer has two pressure-measuring pipes, is separately mounted to air intlet and air outlet slit, thus measuring both differences, obtains pressure difference.When pressure difference exceedes setting value, it is necessary to change medium effeciency filter 102, and Shutter separator 101 needs to clean, to keep the heat dissipation ventilation amount of abundance.
Air filter 1 can adopt modularized design, to install different air filters for varying environment.Such as high wind sandy land, installs dust storm type air filter, high salt fog and high humility district, installs except mist type air filter.
And, when being in high salt fog and high humility area when unit, the quantity of corrugated sheet can be increased to heighten filter efficiency.The quantity of corrugated sheet can be suitably reduced, to be suitable for the climatic characteristic of high wind sandy land when unit is in high wind sandy land.When being in high salt fog and high humility area when unit, Shutter separator needs to separate the drop in air, owing to drop is only small, it is necessary to increase the quantity of corrugated sheet, so as to gap diminishes, improves separation efficiency.When unit is in high wind sandy land, what at this moment need separation is grit and the dust of air, and the particle diameter of these granules is larger than drop, it is possible to suitably heighten the gap of corrugated sheet, reduces the quantity of corrugated sheet.
Direct wind-driven generator cooling system according to the present invention, when carrying out air blast cooling, first cool exterior air is sucked air filter 1 by radiator fan 31 and processes, and the cold air after process is sent directly into, through piping, the core component that the motor feels hot.Cold air enters laggard line space gas heat convection, and the air after heat exchange is discharged to the outside through air outlet 22.
Direct wind-driven generator cooling system according to the present invention, it is possible to there is natural air cooled and air blast cooling both of which.When external environment is relatively low, disclosure satisfy that radiating condition by natural air cooled, it is possible to close the forced air cooling, to save power consumption.When ambient temperature is higher or unit is chronically at high-power running status, the forced air cooling is opened so that air blast cooling and natural air cooled synergy.
As another embodiment of the present invention, the core component of wind-driven generator heating can also be directly blown onto from the air of radiator fan blowout.That is, above-mentioned air supply duct, inner stator end cap, end cap for outer rotor, natural air cooled ventilating duct etc. can be omitted, simply set up air suction inlet, intake line, radiator fan host cavity in the cabin of existing direct wind-driven generator, the air produced by boasting from radiator fan host cavity is directly directed onto the heating region of stator or rotor.At this point it is possible to the appropriate area in cabin arranges air outlet, to discharge the air after absorbing heat, for instance can be positioned at relative to rotor and stator on the cabin of radiator fan host cavity opposition side and set out air port.And, air outlet can arrange above-mentioned kuppe, and air suction inlet can arrange the above-mentioned air filter setting gradually Shutter separator, medium effeciency filter and passing away.
Cooling system according to this another embodiment, it is clear that be not only applicable to outer rotor direct driving wind-driven generator, it is possible to suitable in internal rotor direct wind-driven generator, or other various forms of direct wind-driven generators.
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Claims (6)
1. a direct wind-driven generator cooling system, for cooling down outer rotor direct driving wind-driven generator, it is characterized in that, air suction inlet is offered in the cabin being provided with outer rotor direct driving wind-driven generator, engine room inside is provided with radiator fan host cavity, air suction inlet is connected by intake line with the entrance of radiator fan host cavity, to utilize the radiator fan being arranged in radiator fan host cavity to suck extraneous air from air suction inlet, at air suction inlet, air filter is set, inner stator end cap is formed air inlet, the outlet of radiator fan host cavity is connected by air supply duct with the air inlet on inner stator end cap, so that the air draught from radiator fan blowout enters the air inlet inner stator end cap by air supply duct, end cap for outer rotor is formed air outlet.
2. direct wind-driven generator cooling system as claimed in claim 1, it is characterised in that form the through hole corresponding with the radial clearance between inner stator and outer rotor in the radial outside region of end cap for outer rotor.
3. direct wind-driven generator cooling system as claimed in claim 1, it is characterized in that, air filter includes the passing away tapered into along Shutter separator, medium effeciency filter and sectional area that air flow sets gradually, and passing away is connected with intake line.
4. direct wind-driven generator cooling system as claimed in claim 3, it is characterised in that form barb on the corrugated sheet of Shutter separator.
5. direct wind-driven generator cooling system as claimed in claim 1, it is characterised in that the air outlet on end cap for outer rotor arranges kuppe.
6. direct wind-driven generator cooling system as claimed in claim 5, it is characterised in that kuppe is divided into first paragraph that sectional area is constant and the second segment that sectional area tapers into along air flow, and second segment is towards outer rotor central opening.
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| CN201310432380.1A CN103490558B (en) | 2013-09-18 | 2013-09-18 | Direct wind-driven generator cooling system |
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| CN201310432380.1A CN103490558B (en) | 2013-09-18 | 2013-09-18 | Direct wind-driven generator cooling system |
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| CN103490558B true CN103490558B (en) | 2016-07-06 |
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| CN103795190A (en) * | 2014-02-17 | 2014-05-14 | 扬州大学 | Filter-type ventilation system of large lamp bulb tubular pump unit and determining method of economical efficiency thereof |
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| CN104810942B (en) * | 2015-04-15 | 2017-03-01 | 新疆金风科技股份有限公司 | Permanent magnet direct-driving aerogenerator, system and its stator |
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| CN105909468B (en) * | 2016-06-16 | 2018-12-11 | 绍兴蓝能光伏科技有限公司 | A kind of high-efficiency wind driven generator for transmission system |
| 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 |
| CN109962564B (en) * | 2017-12-25 | 2020-09-29 | 北京金风科创风电设备有限公司 | Ventilation structure of generator |
| CN108894920A (en) * | 2018-06-19 | 2018-11-27 | 嘉兴学院 | A kind of wind power plant that can automatically adjust direction |
| CN108683285A (en) * | 2018-06-25 | 2018-10-19 | 浙江运达风电股份有限公司 | A kind of wind-driven generator of novel cooling manner |
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| CN103490558A (en) | 2014-01-01 |
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