CN105221360B - Cooling system of wind generating set and wind generating set - Google Patents
Cooling system of wind generating set and wind generating set Download PDFInfo
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- CN105221360B CN105221360B CN201510591353.8A CN201510591353A CN105221360B CN 105221360 B CN105221360 B CN 105221360B CN 201510591353 A CN201510591353 A CN 201510591353A CN 105221360 B CN105221360 B CN 105221360B
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- 238000001816 cooling Methods 0.000 title claims abstract description 40
- 230000017525 heat dissipation Effects 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 5
- 241000238631 Hexapoda Species 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 description 12
- 238000012423 maintenance Methods 0.000 description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 101100327310 Caenorhabditis elegans emb-27 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
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- 239000000428 dust Substances 0.000 description 1
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- 239000004519 grease Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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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
The invention provides a cooling system of a wind generating set and the wind generating set. Cooling system includes air inlet portion, air-out portion and fan, the air inlet portion sets up the oar side in the cabin, the air-out portion sets up on the lateral wall of pylon, the fan sets up air-out portion department. According to the cooling system of the wind generating set, the high-altitude air with the temperature lower than the ground temperature is utilized to ventilate and radiate the wind generating set, and the high-altitude air has the temperature lower than the ground air, so that the temperature difference between the external environment air and heating components inside the wind generating set is increased, high-temperature components of the head of the wind generating set are directly cooled, and the radiating efficiency of the wind generating set is improved.
Description
Technical Field
The invention relates to a cooling technology, in particular to a cooling system of a wind generating set and the wind generating set.
Background
Wind power generators are power generation devices that rely on capturing wind energy to convert kinetic energy into electrical energy. In modern large wind power generators, as the power generated by a single wind power generator increases, more and more heat is generated by heat generating components inside the wind power generator. In particular, wind power generators installed in environments with long-term high temperatures are prone to malfunction during operation.
The heat generating component of the wind generating set is mainly a generator positioned at the top of the wind generating set. Under the high-temperature environmental condition in summer, because ambient temperature is higher to wind generating set full power electricity generation for a long time, some spare parts such as generator will lose and dissipate in the unit inner space through the form of heat, wind generating set's whole temperature is higher. When the wind generating set runs at a high temperature for a long time, the lubricating grease of some electrical components and bearings at the position of the machine head can be reduced in service life and even damaged due to overhigh temperature.
At present, most of cooling systems for wind driven generators adopt air cooling for heat dissipation, and air with lower external environment temperature is used for cooling heating components in the wind driven generator set. For the air cooling system, in the prior art, the mode of introducing outside air from the bottom of the tower is mostly adopted, and the outside air is utilized to dissipate heat of the wind generating set.
In the field, the ground surface is exposed to solar radiation, which results in a high surface temperature. When the external environment temperature is higher, the temperature difference between the external environment air and the heating component is smaller, which is not beneficial to the heat dissipation of the wind generating set. In addition, the air entering the tower is heated by the heat-generating equipment and the cable inside the tower, the temperature of the air rises when the air reaches the top of the tower, and then the air with the raised temperature cools the heat-generating components inside the cabin, so that the cooling effect is reduced.
Disclosure of Invention
The embodiment of the invention aims to provide a cooling system of a wind generating set and the wind generating set, so as to increase the temperature difference between the outside environment air and heating components inside the wind generating set, directly cool high-temperature components of a machine head of the wind generating set and improve the heat dissipation efficiency of the wind generating set.
In order to achieve the above object, an embodiment of the present invention provides a cooling system of a wind turbine generator system, including an air inlet portion, an air outlet portion and a fan, wherein the air inlet portion is disposed on a hub on a side of a propeller of a nacelle, the air outlet portion is disposed on a side wall of a tower, the fan is disposed at the air outlet portion, and air passes through the air inlet portion, sequentially enters the hub, a generator, a base and the tower to dissipate heat, and is discharged from the air outlet portion.
Further, the air inlet portion is arranged on the hub.
Further, an air inlet part is provided with a filtering device, and the filtering device is made of filter cotton.
Further, the air outlet part is arranged on the side wall of the tower below the entrance door inner platform at the bottom of the tower.
Furthermore, the air inlet of the fan is communicated with the air outlet part, and a protection device is arranged at the air outlet of the fan and is an insect prevention net cover.
Further, the fan is a centrifugal fan and/or an axial flow fan.
Further, the system also includes a nacelle with a gap between the nacelle and the wind turbine generator and/or between the nacelle and the wind turbine generator blades, respectively.
Further, the system also comprises a temperature sensor, and the temperature sensor is arranged on the inner wall of the fixed shaft of the generator of the wind generating set and/or on the inner wall of the base.
The embodiment of the invention also provides a wind generating set, and the set comprises the cooling system of the wind generating set with the characteristics.
According to the cooling system of the wind generating set and the wind generating set, the characteristics that the atmospheric temperature is reduced along with the rise of the height and the atmosphere is relatively clean at a certain height are utilized, the fan is installed at the bottom of the tower frame of the wind generating set, high-altitude air with lower temperature than the ground is introduced from the height position of the hub of the wind generating set, the high-altitude air is introduced into the wind generating set from top to bottom, high-temperature components of the head of the wind generating set are directly cooled, and then the high-altitude air which is subjected to ventilation and heat dissipation work is discharged from the bottom of the tower. Therefore, the ventilation and heat dissipation efficiency of the wind generating set is improved, and the problem of inconvenience in installation and maintenance of the fan is solved.
Drawings
Fig. 1 is a schematic view of a cooling system of a wind turbine generator system according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a cooling system of a wind turbine generator system according to a second embodiment of the present invention;
fig. 3 is a schematic view of a cooling system of a wind turbine generator system according to a third embodiment of the present invention.
The reference numbers illustrate:
1-an air inlet part; 2-an air outlet part; 3-a cabin; 4-a tower; 5-a hub; 6-a flow guide cover; 7-a generator; 8-blade; 9-a base; 10-filtering cotton; 11-an electric control cabinet body; 12-a centrifugal fan; 13-insect prevention net cover; 14-a temperature sensor; 15-axial fan.
Detailed Description
The cooling system of the wind turbine generator system and the wind turbine generator system according to the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The temperature of the air in the convection layer of the atmospheric environment decreases with increasing altitude. On a horizontal level basis, the air temperature is reduced by 0.65 ℃ and the air at high altitude is cleaner, usually for every 100 meters of increase in altitude. Generally, the hub height of a large wind generating set is about 100 meters, and can reach 150 meters higher. According to the cooling scheme provided by the invention, according to the characteristic that the atmospheric temperature is reduced along with the rise of the height, the high-altitude air with the temperature lower than the ground temperature is utilized to ventilate and radiate the wind generating set, the high-altitude air is induced from top to bottom, and the high-temperature components of the head of the wind generating set are directly cooled, so that the radiating efficiency of the wind generating set is improved.
Example one
Fig. 1 is a schematic view of a cooling system of a wind turbine generator system according to a first embodiment of the present invention. The small arrows in the figure indicate the flow path of the air.
Referring to fig. 1, a cooling system of a wind turbine generator system according to an embodiment of the present invention includes an air inlet portion 1, an air outlet portion 2, and a fan. The air inlet part 1 is arranged on the paddle side of the engine room 3 (namely, the side of the engine room close to the variable pitch system), the air outlet part 2 is arranged on the side wall of the tower 4, and the fan is arranged at the air outlet part 2.
The air inlet 1 may be provided on a part on the side of the paddle, such as the side of the pod 6. Preferably, the air inlet portion 1 may be provided on the hub 5. Specifically, the hub 5 is a hollow body, the hub 5 is provided with a paddle side maintenance hole and a tower side maintenance hole, the paddle side maintenance hole and the tower side maintenance hole are communicated, and the paddle side maintenance hole can be used as the air inlet portion 1.
Gaps are respectively arranged between the flow guide cover 6 and the generator 7 and/or between the flow guide cover 6 and the blades 8, and outside high-altitude air can reach the air inlet part 1 through the gaps between the flow guide cover 6 and the generator 7 and the gaps between the flow guide cover 6 and the blades 8.
Further, the hub 5 communicates with the dead axle hole of the generator 7 so that high altitude air can flow from the hub 5 into the dead axle hole of the generator 7. The dead axle hole of the generator 7 is also communicated with the ventilation hole of the base 9, so that high-altitude air can flow into the ventilation hole of the base 9 from the dead axle hole of the generator 7. The ventilation holes of the foundation 9 are at the same time in communication with the cavity of the tower 4, so that high altitude air can flow from the ventilation holes of the foundation 9 into the cavity of the tower 4.
The air inlet part 1 is provided with a filtering device. For example, the filter device may be a filter plug 10. The filter cotton 10 arranged at the air inlet part 1 is used for filtering outside high-altitude air, so that particles, dust and the like in the high-altitude air can be effectively prevented from entering the wind generating set to pollute the wind generating set, and the cleanliness of the air in the wind generating set is improved.
In order to facilitate installation and maintenance of the fan, a tower entrance inner platform (not shown) is arranged at the bottom of the tower 4, and the air outlet part 2 is arranged on a tower side wall below the tower entrance inner platform. Specifically, an air outlet part 2 is provided on a side wall of the tower below the platform in the tower entrance door at the bottom of the tower 4, and a fan is installed at the air outlet part 2. The fan is arranged at the bottom of the tower frame, so that the fan can be conveniently installed and maintained. Furthermore, cables (not shown) are provided inside the tower 4, and an electric cabinet 11 is also provided below the platform inside the tower entrance. Through going out wind portion 2 and setting up under the platform in the door at the pylon, be favorable to dispelling the heat to cable and electric cabinet body 11.
The fans are provided with air inlet holes and air outlet holes. Optionally, in the solution of the present invention, an air inlet of the fan is communicated with the air outlet 2, and a protection device is disposed at the air outlet of the fan. Wherein, this protection device is preferred protection against insects screen panel 13 for prevent that birds from getting into wind generating set through the fan venthole in.
The fan is preferably a centrifugal fan 12. The centrifugal fan 12 can overcome larger system resistance and can provide larger air volume, so that only one centrifugal fan 12 is used for providing power in the whole system.
In addition, the cooling system of the wind turbine generator system of the embodiment of the present invention is mounted with a temperature sensor 14 at a high temperature site, as indicated by black dots in fig. 1. Among them, the temperature sensor is preferably a temperature sensor PT 100. The PT100 temperature sensor is a resistance type temperature sensor made of Platinum (PT), and PT100 means that the resistance value of the temperature sensor is 100 ohms at 0 degrees. Specifically, temperature sensors PT100 are installed at positions close to the inner wall of the generator fixed shaft and/or the inner wall of the base, respectively, to monitor the air temperatures in the inner wall of the generator and the inner wall of the base.
Correspondingly, a relay (not shown) and a main control system (not shown) are further included in the wind generating set, the main control system is respectively electrically connected with the temperature sensor PT100 and the relay, and the relay is electrically connected with the fan, so that the main control system can control the fan to be started and shut down through the relay.
Specifically, the temperature sensor PT100 transmits the detected temperature signal of the inner wall of the generator and the temperature signal of the inner wall of the base to the main control system, and the main control system compares the received temperature signal with a preset temperature value (temperature value for ensuring normal operation of the wind generating set) inside the main control system. When the temperature signal is higher than the preset temperature value, the main control system starts the fan through the relay so as to ventilate and radiate the wind generating set; when the temperature signal is lower than the preset temperature value, the main control system directly stops the fan or continues to operate the fan for a preset time (such as 5 minutes, 10 minutes and the like), and then stops the fan. The main control system detects the temperature of the generator 7 through the temperature sensor PT100 and controls the on/off of the fan through the relay, so that the running time of the fan is reduced. Therefore, the normal operation of the wind generating set is effectively ensured, the overlong operation time of the fan is avoided, and the electric energy is saved.
The cooling system of the wind generating set of the embodiment of the invention utilizes the characteristics that the temperature of the high-altitude air is lower than the ground and the high-altitude air is cleaner, the high-altitude air is introduced from the air inlet part at the side of the cabin paddle through the fan, the high-altitude air directly dissipates heat of the heating part in the cabin after entering the cabin, then flows into the nature from the air outlet part on the side wall of the tower, the direction of the cooling air flow is from top to bottom, the temperature difference between the external environment air and the heating part in the wind generating set is increased, and the heat dissipation efficiency of the wind generating set is improved.
Example two
Fig. 2 is a schematic view of a cooling system of a wind turbine generator system according to a second embodiment of the present invention. The small arrows in the figure indicate the flow path of the air.
The main difference between the embodiment of the present invention and the first embodiment is that two axial fans 15 are used to power the air flow of the cooling system instead of the centrifugal fan 12 of the first embodiment.
Specifically, an axial fan 15 is arranged at the air outlet part 2, an air inlet of the axial fan 15 is communicated with the air outlet part 2, and a protection device is arranged at an air outlet of the axial fan 15.
The protection device is preferably an insect prevention mesh enclosure 13 which is used for preventing birds from entering the wind generating set through the air outlet of the fan.
In addition, another axial fan 15 is provided at a tower top platform provided at the top of the tower 4, guiding the air entering the tower from the top to the bottom.
EXAMPLE III
Fig. 3 is a schematic view of a cooling system of a wind turbine generator system according to a third embodiment of the present invention. The small arrows in the figure indicate the flow path of the air.
The main difference between the first embodiment and the second embodiment of the present invention is that a centrifugal fan 12 and an axial fan 15 are connected in series to provide power for the air flow of the cooling system. Specifically, an axial flow fan 15 is arranged at the platform position at the top of the tower, a centrifugal fan 12 is arranged at the air outlet part 2, and the power of high-altitude air entering and flowing to the bottom of the tower can be enhanced through the axial flow fan and the centrifugal fan.
The working principle of the cooling system of the wind turbine generator system according to the embodiment of the present invention will be described in detail below.
The temperature sensors 14 monitor the temperature of the air in the inner wall of the generator 7 and the inner wall of the base 9. When the temperature sensor 14 monitors that the temperature of the air in the inner wall of the generator 7 and the inner wall of the base 9 exceeds the temperature preset value in the main control system, the main control system starts the fan.
The fan drives external high-altitude air to reach the air inlet part 1 through a gap between the air guide sleeve 6 and the generator 7 and a gap between the air guide sleeve 6 and the blades 8, and the high-altitude air passes through the filter cotton 10 at the air inlet part 1 and enters the hub 5 to realize ventilation and heat dissipation of the hub 5; then, the introduced high-altitude air flows out from the tower-side maintenance hole of the hub 5 and enters a dead axle hole of the generator 7, so that ventilation and heat dissipation of the generator 7 are realized; then, the inflowing high-altitude air flows out from the fixed shaft hole of the generator 7 and enters the base ventilation hole, so that the ventilation and heat dissipation of the base 9 are realized; in addition, the inflowing high-altitude air flows out from the base vent hole and enters the tower cavity, the high-altitude air reaches the air outlet part 2 at the bottom of the tower along the tower cavity, the heat dissipation of the cable inside the tower 4 and the electric control cabinet body 11 is realized, and finally the high-altitude air is led out to the outside of the wind generating set from the tower cavity by the fan at the air outlet part 2.
When the temperature sensor 14 monitors that the temperature of the air in the inner wall of the generator 7 and the inner wall of the base 9 is lower than or equal to the preset temperature value in the main control system, the main control system directly stops the fan, or continues to operate the fan for a preset time (such as 5 minutes, 10 minutes and the like), and then stops the fan.
According to the cooling system of the wind generating set and the wind generating set, disclosed by the embodiment of the invention, the characteristics that the atmospheric temperature is reduced along with the rise of the height and the atmosphere is relatively clean at a certain height are utilized, the fan is arranged at the bottom of the tower frame of the wind generating set, high-altitude air with lower temperature than the ground is introduced from the height position of the hub of the wind generating set, the high-altitude air is introduced into the wind generating set from top to bottom, the high-temperature components of the head of the wind generating set are directly cooled, and then the high-altitude air which is subjected to ventilation and. Therefore, the ventilation and heat dissipation efficiency of the wind generating set is improved, and the problem of inconvenience in installation and maintenance of the fan is solved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A cooling system of a wind generating set is characterized by comprising an air inlet part (1), an air outlet part (2), a flow guide sleeve (6) and a fan, the air inlet part (1) is arranged on a hub (5) at the side of the oar of the engine room (3), the air outlet part (2) is arranged on the side wall of the bottom of the tower (4), the fan is arranged at the air outlet part (2), gaps are respectively arranged between the air guide sleeve (6) and the wind generating set generator (7) and between the air guide sleeve (6) and the wind generating set blades (8), air enters the air guide sleeve (6) through the gaps and sequentially enters the hub (5), a fixed shaft hole of the generator (7) communicated with the hub (5), the base (9) and the tower (4) through the air inlet part (1) to dissipate heat, and the cables inside the tower (4) and the electric control cabinet body (11) are discharged from the air outlet part (2) after heat dissipation.
2. Cooling system of a wind park according to claim 1, wherein the air inlet (1) is arranged on a hub (5).
3. The cooling system of a wind generating set according to claim 2, characterized in that a filtering device is arranged at the air inlet (1), and the filtering device is a filter cotton (10).
4. The cooling system of a wind power plant according to claim 1, wherein the air outlet portion (2) is provided on a tower side wall below a platform in a tower entrance door at the bottom of the tower (4).
5. The cooling system of a wind generating set according to claim 1, wherein the air inlet of the fan is communicated with the air outlet part (2), and a protection device is arranged at the air outlet of the fan, and the protection device is an insect screen (13).
6. Cooling system of a wind park according to claim 1, wherein the fan is a centrifugal fan (12) and/or an axial fan (15).
7. Cooling system of a wind park according to any of claims 1-6, wherein the system further comprises a temperature sensor (14), the temperature sensor (14) being arranged at the inner wall of the wind park generator (7) being fixed and/or at the inner wall of the foundation (9).
8. A wind park according to any of claims 1-7, comprising a cooling system of a wind park.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510591353.8A CN105221360B (en) | 2015-09-16 | 2015-09-16 | Cooling system of wind generating set and wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510591353.8A CN105221360B (en) | 2015-09-16 | 2015-09-16 | Cooling system of wind generating set and wind generating set |
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| CN105221360A CN105221360A (en) | 2016-01-06 |
| CN105221360B true CN105221360B (en) | 2020-07-17 |
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| CN201510591353.8A Active CN105221360B (en) | 2015-09-16 | 2015-09-16 | Cooling system of wind generating set and wind generating set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4325050A1 (en) * | 2022-08-18 | 2024-02-21 | Nordex Energy SE & Co. KG | Method for operating a wind turbine, cooling system and wind turbine |
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| CN106640554B (en) * | 2016-12-12 | 2019-01-08 | 北京金风科创风电设备有限公司 | Heat dissipation system and heat dissipation method for wind generating set and wind generating set |
| WO2018197058A1 (en) * | 2017-04-24 | 2018-11-01 | Siemens Wind Power A/S | Filter system for providing air into a generator of a wind turbine |
| CN109688763A (en) * | 2018-12-18 | 2019-04-26 | 山东中车风电有限公司 | A kind of high-power wind-driven generator group current transformer temperature control system |
| CN109944746B (en) * | 2019-04-16 | 2020-10-23 | 浙江大学 | Wind generating set |
| CN112546736B (en) * | 2019-09-25 | 2022-11-29 | 新疆金风科技股份有限公司 | Air filtering device and air circulation equipment |
| CN111042998B (en) * | 2020-01-02 | 2022-01-21 | 浙江大学 | Wind generating set |
| CN113090463B (en) * | 2021-05-25 | 2022-04-08 | 中国华能集团清洁能源技术研究院有限公司 | Energy storage system of wind turbine generator, wind turbine generator and using method of wind turbine generator |
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| GB2484329A (en) * | 2010-10-07 | 2012-04-11 | David Salem | Wind generator with vertical duct and turbine in duct at low level |
| CN204476666U (en) * | 2015-01-30 | 2015-07-15 | 北京金风科创风电设备有限公司 | The cooling unit of wind power generating set, cooling system and wind power generating set |
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2015
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|---|---|---|---|---|
| CN201401287Y (en) * | 2009-04-23 | 2010-02-10 | 锋电能源技术有限公司 | Wind generating set engine room structure favorable for radiating |
| GB2484329A (en) * | 2010-10-07 | 2012-04-11 | David Salem | Wind generator with vertical duct and turbine in duct at low level |
| CN204476666U (en) * | 2015-01-30 | 2015-07-15 | 北京金风科创风电设备有限公司 | The cooling unit of wind power generating set, cooling system and wind power generating set |
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| EP4325050A1 (en) * | 2022-08-18 | 2024-02-21 | Nordex Energy SE & Co. KG | Method for operating a wind turbine, cooling system and wind turbine |
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