CN103490558A - Cooling system of direct-driven wind turbine generator - Google Patents
Cooling system of direct-driven wind turbine generator Download PDFInfo
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- CN103490558A CN103490558A CN201310432380.1A CN201310432380A CN103490558A CN 103490558 A CN103490558 A CN 103490558A CN 201310432380 A CN201310432380 A CN 201310432380A CN 103490558 A CN103490558 A CN 103490558A
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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
Abstract
The invention discloses a cooling system of a direct-driven wind turbine generator. An air suction port is formed in an engine room provided with the direct-driven wind turbine generator, a cooling fan accommodating cavity is arranged in the engine room, and the air suction port is communicated with the inlet of the cooling fan accommodating cavity through a suction pipe so as to suck the outside air from the air suction port by using a cooling fan arranged in the cooling fan accommodating cavity. An air filtering device is arranged at the air suction port. The outlet of the cooling fan accommodating cavity faces towards a rotor or a stator. An air outlet is formed in the side, relative to the rotor and the stator and opposite to the cooling fan accommodating cavity, of the engine room. According to the cooling system, the outside air is sucked into the interior of the wind turbine generator to directly cool key heating components of the wind turbine generator. Therefore, the heat dissipation effect is good.
Description
Technical field
The present invention relates to the wind power technology field, particularly a kind of cooling system that is applied to direct wind-driven generator.
Background technology
Direct wind-driven generator, be a kind of generator directly driven by wind-force, also claims the gearless wind motor, and this generator adopts multipolar dynamo directly to be connected with impeller the mode driven, and removes this legacy device of gear box from.Because gear box is easily to transship in MW class wind turbine at present and the too early higher parts of spoilage, therefore, the direct-drive type wind motor that there is no gear box, high efficiency, low noise, high life while possessing low wind speed, reduce unit volume, reduce the plurality of advantages such as operation expense.
Direct wind-driven generator with vaned wheel hub be set directly be connected, by rotating shaft, rotor, stator etc., formed.Rotating shaft is positioned at the center of rotor, and is fixedly connected with rotor; Rotating shaft is fixedly connected with wheel hub, while making blade drive the wheel hub rotation, can drive rotating shaft and rotate, and rotor driven rotates simultaneously.Stator is fixed with respect to rotor radial.In the course of the work, when rotor rotates, drive the permanent magnet poles be located in rotor and rotate, thereby produce rotating magnetic field, in the stator winding by rotating magnetic field on stator, cutting movement produces electromotive force, thereby mechanical energy is converted into to electric energy.
In this process, on rotor and stator, can produce a large amount of heat., there is the shortcoming that parts are lengthy and jumbled, with high costs, radiating efficiency is low in the absolutely empty two-way circulating cooling cooling system of the general employing of direct wind-driven generator cooling system at present.
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 costs, and improves radiating efficiency.
On the other hand, the invention provides a kind of direct wind-driven generator cooling system that is suitable for the outer rotor direct driving wind-driven generator.Direct wind-driven generator is divided into external rotor form and internal rotor form, if the external rotor form, rotor (is called external rotor) outside, and stator is in interior (being called internal rotor).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 following technical scheme:
A kind of direct wind-driven generator cooling system, offer air suction inlet being provided with on the cabin of direct wind-driven generator, engine room inside is provided with the radiator fan host cavity, the entrance of air suction inlet and radiator fan host cavity is communicated with by intake line, the radiator fan be arranged in the radiator fan host cavity with utilization sucks extraneous air from air suction inlet, at air suction inlet, air filter is set, at least one in rotor and stator of the outlet of radiator fan host cavity, set out air port on the cabin that is positioned at radiator fan host cavity opposition side with respect to rotor and stator.
Alternatively, air filter comprises the passing away that the corrugated sheet separator, medium effeciency filter and the sectional area that set gradually along air flow diminish gradually, and passing away is connected with intake line.
Preferably, form barb on the corrugated sheet of corrugated sheet separator.
Alternatively, at air outlet, kuppe is set.
Preferably, kuppe is divided into along air flow the second segment that first paragraph that sectional area is constant and sectional area diminish gradually, and second segment rotor center opening outward.
A kind of direct wind-driven generator cooling system, for cooling outer rotor direct driving wind-driven generator, offer air suction inlet on the cabin that is provided with the outer rotor direct driving wind-driven generator, engine room inside is provided with the radiator fan host cavity, the entrance of air suction inlet and radiator fan host cavity is communicated with by intake line, the radiator fan be arranged in the radiator fan host cavity with utilization sucks extraneous air from air suction inlet, at air suction inlet, air filter is set, form air inlet on the internal stator end cap, air inlet on the outlet of radiator fan host cavity and internal stator end cap is communicated with by air supply duct, form air port on end cap for outer rotor.
Alternatively, at the radial outside of the end cap for outer rotor zone formation through hole corresponding with the radial clearance between internal stator and external rotor.
Alternatively, air filter comprises the passing away that the corrugated sheet separator, medium effeciency filter and the sectional area that set gradually along air flow diminish gradually, and passing away is connected with intake line.
Preferably, form barb on the corrugated sheet of corrugated sheet separator.
Alternatively, the air outlet on end cap for outer rotor arranges kuppe.
Preferably, kuppe is divided into along air flow the second segment that first paragraph that sectional area is constant and sectional area diminish gradually, and second segment rotor center opening outward.
According to the present invention, by extraneous air being drawn into to wind-driven generator inside, the crucial heat generating components of direct cooling air power generator, radiating effect is better, saved radiator and the coupling of traditional absolutely empty double loop circulation simultaneously, made cooling system more simple and reliable, cost.And, by natural air cooled and combination air blast cooling, make the cooling effectiveness of wind-driven generator higher.And, utilize air filter effectively to process extraneous air, prevent from the parts of engine room inside are caused damage.And, air filter is carried out to modularized design, thereby can adapt to extraneous various environment.
The accompanying drawing explanation
Fig. 1 a is according to the bonding state schematic diagram of internal stator and external rotor in the direct wind-driven generator of the embodiment of the present invention (observing from the internal stator side);
Fig. 1 b is according to the bonding state schematic perspective view of internal stator and external rotor in the direct wind-driven generator of the embodiment of the present invention (observing from the external rotor side);
Fig. 1 c is the front view according to external rotor in the direct wind-driven generator of the embodiment of the present invention;
Fig. 2 is the schematic diagram according to the direct wind-driven generator group of the embodiment of the present invention;
Fig. 3 is the schematic diagram according to the direct wind-driven generator cooling system of the embodiment of the present invention;
Fig. 4 a is the stereogram according to the kuppe of the direct wind-driven generator cooling system of the embodiment of the present invention;
The profile that Fig. 4 b is kuppe shown in Fig. 4 a;
Fig. 5 a is the front view according to the air filter of the direct wind-driven generator cooling system of the embodiment of the present invention;
The vertical view that Fig. 5 b is air filter shown in Fig. 5 a;
The cut-away view that Fig. 5 c is the corrugated sheet separator in air filter shown in Fig. 5 b.
Embodiment
Below, describe embodiments of the invention in detail with reference to accompanying drawing.
Direct wind-driven generator is divided into external rotor form and internal rotor form, if external rotor form (outer rotor direct driving wind-driven generator), rotor (is called external rotor) outside, stator is in interior (being called internal 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.Below take the external rotor direct wind-driven generator as example explanation the present invention.
According to the present invention, extraneous air is drawn into to wind-driven generator inside, the direct core component (rotor, stator etc.) to wind-driven generator carries out cooling, has obtained better radiating effect.For this reason, at first need stator and rotor structure are changed.
Fig. 1 a is according to the bonding state schematic diagram of internal stator and external rotor in the direct wind-driven generator of the embodiment of the present invention (observing from the internal stator side).
As shown in Figure 1a, external rotor 20 as same " bucket " are enclosed within internal stator 10 outsides.External rotor 20 general by magnetic conduction good ferrous material make, be fixed with at the inwall of " bucket " the magnetic pole (not shown) that permanent magnet is made, " bucket " is exactly the yoke 23 of external rotor.There is predetermined radial clearance between internal stator 10 and external rotor 20.Central authorities at internal stator 10 are fixedly connected with base 30, and this base 30, for the rotating shaft of external rotor 20 is installed, is rotated to support external rotor 20.Particularly, according to the internal stator 10 of the embodiment of the present invention, have internal stator end cap 11, the iron core of composition internal stator 10, coil etc. are incorporated into this internal stator end cap 11, and aforementioned base 30 also is incorporated into this internal stator end cap 11.Form air inlet 12 on internal stator end cap 11, with to the inner extraneous air of introducing of direct wind-driven generator, carry out cooling.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, but obviously is not limited to this.
Fig. 1 b is that Fig. 1 c is the front view according to external rotor in the direct wind-driven generator of the embodiment of the present invention according to the bonding state schematic perspective view of internal stator and external rotor in the direct wind-driven generator of the embodiment of the present invention (observing from the external rotor side).
As shown in Fig. 1 b and Fig. 1 c, external rotor 20 outward appearances are the bottle cap shape, and cylindric part is 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 in conjunction with wheel hub (not shown).At this, for convenience of explanation, the rotating shaft of external rotor 21 is not shown in the accompanying drawings, it is positioned at external rotor 20 center.Form air port 22 on end cap for outer rotor 21, so that the air be imported into by above-mentioned air inlet 12 returns to the wind-driven generator outside after the absorption heat becomes hot gas.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, but obviously is not limited to this.
In addition, preferably end cap for outer rotor 21 has outer ring 211 and inner ring 212, between outer ring 211 and inner ring 212, by strengthening gusset 24, is connected.Thus, form through hole 25 between outer ring 211 and inner ring 212.Under final confined state, through hole 25 is corresponding with the radial clearance between internal stator 10 and external rotor 20, to form natural air cooled air duct described later.
The following describes the overall condition according to the direct wind-driven generator cooling system of the embodiment of the present invention.Fig. 2 is the overall schematic according to the direct wind-driven generator group of the embodiment of the present invention, and Fig. 3 is the overall schematic according to the direct wind-driven generator cooling system of the embodiment of the present invention.
As shown in Figures 2 and 3,9 for being arranged on the air suction inlet of 200 bottoms, cabin, 1 is air filter, and 2 is connecting tube between air filter and radiator fan host cavity (below, be called intake line), 3 is the radiator fan host cavity, 4 is natural air cooled air duct, and 5 is kuppe, and 6 is the kuppe outlet, 7 is blade, and 8 is wheel hub.Radiator fan host cavity 3 is arranged on 200 inside, cabin, and radiator fan 31 is installed, 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 cooling to motor.Symbol 100 in Fig. 2 means pylon.
The air draught blown out from radiator fan 31 enters the air inlet 12 internal stator end cap 11 by air supply duct 30, and after flowing between internal stator 10 and external rotor 20, the air outlet 22 from external rotor 20 is discharged.Preferably, at air outlet 22, kuppe 5 is set, the purpose that kuppe 5 is set is, when hot-air is blown out from motor, not to be subject to influenced by wind pressure windward, from motor, blows out smoothly.A kind of optional shape of kuppe 5 is as shown in Figs. 4a and 4b.This kuppe 5 is divided into along air flow the second segment 52 that first paragraph 51 that sectional area is constant and sectional area diminish gradually, and second segment 52 forms the kuppe outlet 6 at rotor 20 centers outward.
Above-mentioned natural air cooled air duct 4 is consisted of the radial clearance between the through hole 25 on end cap for outer rotor 21 and external rotor 20 and internal rotor 10, the air-flow acted on blade 7 enters into the radial clearance between external rotor 20 and internal rotor 10 by the through hole 25 on end cap for outer rotor 21, and flow out from the radial clearance of opposite side, can carry out cooling to external rotor 20 and internal rotor 10 thus.
According to the direct wind-driven generator cooling system of the embodiment of the present invention, when ambient temperature is low, can only relies on and natural air cooledly motor be carried out cooling, by the wind that is blown into natural air cooled air duct 4, undertaken cooling.Only rely on natural air cooledly can't carry out effective cooling the time, can open radiator fan 31, carry out air blast cooling, with natural air cooled synergy.
According to another variant embodiment, can omit natural air cooled air duct 4, on end cap for outer rotor 21, do not form through hole 25, only rely on the air that utilizes radiator fan 3 to be drawn into direct wind-driven generator inside from outside to carry out cooling.Now, the component exposed that can avoid as far as possible wind-driven generator inside externally.
On the other hand, along with the development of wind-driven generator, increasing wind-driven generator need to be based upon high dust storm and the high salt fog of high humility area.For this application scenarios, air filter 1 of the present invention can adopt following structure.Certainly, air filter 1 of the present invention is not limited to the concrete structure of following explanation, can suitably select as required.And, when external environment condition is better, also can screen pack only be set at air suction inlet 9.
Fig. 5 a is the front view according to the air filter of the direct wind-driven generator cooling system of the embodiment of the present invention, the vertical view that Fig. 5 b is air filter shown in Fig. 5 a, the cut-away view that Fig. 5 c is the corrugated sheet separator in air filter shown in Fig. 5 b.
As shown in Figure 5 a to 5 c, air filter 1 mainly is comprised of corrugated sheet separator 101, medium effeciency filter 102, passing away 103 these three parts, and passing away 103 is connected with intake line 2.
Preferably, at corrugated sheet 104 upper surfaces, form barb 105, barb 105 increases the probability that in air, drop is adsorbed, and to improve separative efficiency, concrete structure as shown in Figure 5 c.
Medium effeciency filter can adopt the F9 medium effeciency filter.
The shape that passing away 103 adopts cross sections to diminish gradually, preferably adopt shown in Fig. 5 a trapezoidally, and this is in order to reduce the pressure loss, and is convenient to design processing.
According to said structure, corrugated sheet separator 101 is responsible for filtering tiny liquid particles and solid particle, and medium effeciency filter 102 is responsible for filtering more tiny liquid particles and solid particle.That is, corrugated sheet separator 101 completes primary filter, and medium effeciency filter 102 carries out in-depth filtration.
Accordingly, in high dust storm area, 1 pair of airborne dust of air filter and grit are processed, and make it to enter the cooling system of wind-driven generator; In high humility and high salt fog area, air filter 1 pair of airborne salt fog droplet, particle water and some solid particles are processed, and make it can not enter the cooling system of wind-driven generator.
In addition, on air filter 1, pressure sensor can be installed, pressure sensor has two pressure-measuring pipes, is arranged on respectively air intlet and air outlet slit, thereby measures both poor, obtains pressure difference.When pressure difference surpasses set point, need to change medium effeciency filter 102, and corrugated sheet separator 101 needs to clean, to keep sufficient heat dissipation ventilation amount.
And, during in high salt fog and high humility area, can increase the quantity of corrugated sheet to heighten filter efficiency when unit.When unit can suitably reduce the quantity of corrugated sheet in high dust storm area, to be applicable to the climatic characteristic in high dust storm area.When unit is in high salt fog and high humility area, the corrugated sheet separator need to separate airborne drop, because drop is very little, needs to increase the quantity of corrugated sheet, makes it gap smaller, improves separative efficiency.When unit, when high dust storm is regional, what at this moment need separation is grit and the dust of air, and the size ratio drop of these particles is larger, so can suitably heighten the gap of corrugated sheet, reduces the quantity of corrugated sheet.
According to direct wind-driven generator cooling system of the present invention, when carrying out air blast cooling, at first cool exterior air is processed by radiator fan 31 air amount filters 1, and the cold air after processing directly sends 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 outside through air outlet 22.
According to direct wind-driven generator cooling system of the present invention, can there are natural air cooled and two kinds of patterns of air blast cooling.When external environment is low, can meet radiating condition by natural air cooled, can close the forced air cooling, to save power consumption.When ambient temperature is higher or unit during for a long time in high-power running status, the forced air cooling is opened, and makes air blast cooling and natural air cooled synergy.
As another embodiment of the present invention, the air blown out from radiator fan also can directly blow to the core component of wind-driven generator heating.That is to say, can omit above-mentioned air supply duct, internal stator end cap, end cap for outer rotor, natural air cooled air duct etc., just set up air suction inlet, intake line, radiator fan host cavity in the cabin of existing direct wind-driven generator, the air of producing by boasting from the radiator fan host cavity directly is directed onto the heating region of stator or rotor.Now, can set out air port in the appropriate area in cabin, discharge to absorb the air after heat, for example can on the cabin that is positioned at radiator fan host cavity opposition side with respect to rotor and stator, set out air port.And air outlet can arrange above-mentioned kuppe, air suction inlet can arrange the above-mentioned air filter that sets gradually corrugated sheet separator, medium effeciency filter and passing away.
According to the cooling system of this another embodiment, obviously be not only applicable to the outer rotor direct driving wind-driven generator, also applicable to the internal rotor direct wind-driven generator, or other various forms of direct wind-driven generators.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (11)
1. a direct wind-driven generator cooling system, it is characterized in that, offer air suction inlet being provided with on the cabin of direct wind-driven generator, engine room inside is provided with the radiator fan host cavity, the entrance of air suction inlet and radiator fan host cavity is communicated with by intake line, the radiator fan be arranged in the radiator fan host cavity with utilization sucks extraneous air from air suction inlet, at air suction inlet, air filter is set, at least one in rotor and stator of the outlet of radiator fan host cavity, set out air port on the cabin that is positioned at radiator fan host cavity opposition side with respect to rotor and stator.
2. direct wind-driven generator cooling system as claimed in claim 1, it is characterized in that, air filter comprises the passing away that the corrugated sheet separator, medium effeciency filter and the sectional area that set gradually along air flow diminish gradually, and passing away is connected with intake line.
3. direct wind-driven generator cooling system as claimed in claim 2, is characterized in that, on the corrugated sheet of corrugated sheet separator, forms barb.
4. direct wind-driven generator cooling system as claimed in claim 1, is characterized in that, at air outlet, kuppe is set.
5. direct wind-driven generator cooling system as claimed in claim 4, is characterized in that, kuppe is divided into along air flow the second segment that first paragraph that sectional area is constant and sectional area diminish gradually, and second segment rotor center opening outward.
6. a direct wind-driven generator cooling system, for cooling outer rotor direct driving wind-driven generator, it is characterized in that, offer air suction inlet on the cabin that is provided with the outer rotor direct driving wind-driven generator, engine room inside is provided with the radiator fan host cavity, the entrance of air suction inlet and radiator fan host cavity is communicated with by intake line, the radiator fan be arranged in the radiator fan host cavity with utilization sucks extraneous air from air suction inlet, at air suction inlet, air filter is set, form air inlet on the internal stator end cap, air inlet on the outlet of radiator fan host cavity and internal stator end cap is communicated with by air supply duct, form air port on end cap for outer rotor.
7. direct wind-driven generator cooling system as claimed in claim 6, is characterized in that, at the radial outside zone formation through hole corresponding with the radial clearance between internal stator and external rotor of end cap for outer rotor.
8. direct wind-driven generator cooling system as claimed in claim 6, it is characterized in that, air filter comprises the passing away that the corrugated sheet separator, medium effeciency filter and the sectional area that set gradually along air flow diminish gradually, and passing away is connected with intake line.
9. direct wind-driven generator cooling system as claimed in claim 8, is characterized in that, on the corrugated sheet of corrugated sheet separator, forms barb.
10. direct wind-driven generator cooling system as claimed in claim 6, is characterized in that, the air outlet on end cap for outer rotor arranges kuppe.
11. direct wind-driven generator cooling system as claimed in claim 10, is characterized in that, kuppe is divided into along air flow the second segment that first paragraph that sectional area is constant and sectional area diminish gradually, and second segment rotor center opening outward.
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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 CN103490558B (en) | 2016-07-06 |
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| CN105909468A (en) * | 2016-06-16 | 2016-08-31 | 陈立 | Efficient wind driven generator used for power transmission system |
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| CN107528423A (en) * | 2017-10-17 | 2017-12-29 | 广州市香港科大霍英东研究院 | A kind of small-size wind power-generating closed permanent magnet generator |
| 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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| CN105909468A (en) * | 2016-06-16 | 2016-08-31 | 陈立 | Efficient wind driven generator used for power transmission system |
| CN107528423A (en) * | 2017-10-17 | 2017-12-29 | 广州市香港科大霍英东研究院 | A kind of small-size wind power-generating closed permanent magnet generator |
| 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 |
| CN109962564A (en) * | 2017-12-25 | 2019-07-02 | 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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|---|---|
| CN103490558B (en) | 2016-07-06 |
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