CN110761959A - Fan cabin heat dissipation system and method - Google Patents
Fan cabin heat dissipation system and method Download PDFInfo
- Publication number
- CN110761959A CN110761959A CN201911129401.6A CN201911129401A CN110761959A CN 110761959 A CN110761959 A CN 110761959A CN 201911129401 A CN201911129401 A CN 201911129401A CN 110761959 A CN110761959 A CN 110761959A
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- China
- Prior art keywords
- fan
- temperature
- engine room
- air inlet
- air outlet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/60—Cooling or heating of wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/80—Arrangement of components within nacelles or towers
- F03D80/88—Arrangement of components within nacelles or towers of mechanical components
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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 fan engine room heat dissipation system and method, and belongs to the technical field of wind power operation and maintenance. The air entering from the air inlet is spirally accelerated to rise into the cabin and then is discharged from the air outlet, and the heat is taken out when the air flows through the cabin. The system is safe, reliable and high in automation degree, labor cost is reduced, operating cost is lowered, and heat dissipation capacity of the existing fan is improved. Structural design is reasonable, can effectively promote the heat-sinking capability of current fan, has improved the security and the stability of fan operation.
Description
Technical Field
The invention belongs to the technical field of wind power operation and maintenance, and particularly relates to a fan engine room heat dissipation system and method.
Background
With the rapid development of wind power, the installed capacity of the wind power is continuously increased, and the specific gravity of the wind power in a power grid is higher and higher. Therefore, the requirements for safe and reliable operation of the wind turbine generator are higher and higher. At present, with the construction of wind power operation and maintenance teams and the improvement of personnel service skills, common faults of a fan can be almost controlled, and the fault elimination rate can basically reach one hundred percent. However, the devices in the tower drum of the fan are large-scale devices such as a frequency converter, a control cabinet, a dry-type transformer and the like, the devices are placed relatively intensively and generate high temperature during continuous operation, and in addition, the high temperature in summer and the defects of mechanical design and process of the fan cause that the high temperature generated by unsmooth ventilation cannot be timely discharged although the platform is provided with the ventilation holes, so that the temperatures of the tower drum of the fan and the cabin are too high, the temperature of high-temperature gathering devices and temperature sensing elements are directly increased, heating and alarming are caused, protection actions are caused, the devices are forced to stop operating, and the electric quantity loss and the power.
Research shows that as the temperature of the cabin rises, the most obvious result is that the lubricating oil temperature of the gearbox is seriously influenced, and the fault that the oil temperature of the gearbox is too high is damaged: 1. the load limiting time is increased year by year, the oil temperature is more than or equal to 75 ℃, the fan operates in a limited power mode, and the fan stops at the temperature of more than or equal to 80 ℃; 2. heat generation amount increase → lubrication characteristic deterioration → wear is aggravated, transmission efficiency is lowered, and tooth surface is biased. The adaptive capacity of the fan to the environment is deteriorated; 3. the service life of the gear oil is reduced by half when the average service temperature is increased by ten degrees; high oil temperature → aggravation of oil oxidation → change of viscosity-temperature characteristic → worsening of lubricating characteristic; 4. the whole ventilation capacity of the engine room is influenced, the temperature of the engine room is obviously higher than the ambient temperature, the accelerated aging of components and parts is realized, and the frequent occurrence of electrical faults is realized. The high temperature of the oil in the gearbox and the faults caused by the high temperature of other equipment bring a plurality of challenges to the daily operation and maintenance of the wind field.
Disclosure of Invention
In order to solve the existing problems, the invention aims to provide a fan engine room heat dissipation system and method, which are reasonable in structural design, capable of effectively improving the heat dissipation capacity of the existing fan, high in automation degree, capable of reducing labor cost, reducing operation cost and improving the safety and stability of fan operation.
The invention is realized by the following technical scheme:
the invention discloses a fan engine room cooling system which comprises a temperature measuring device, a top ventilation mechanism, a bottom ventilation mechanism, an air guide plate and a control system, wherein the temperature measuring device is connected with the top ventilation mechanism;
the temperature measuring device and the top ventilation mechanism are arranged in the engine room, an air outlet hole is formed in the shell of the engine room, and the top ventilation mechanism is connected with the air outlet hole; the bottom ventilation mechanism is arranged in the tower barrel, the wall of the tower barrel is provided with air inlet holes, and the bottom ventilation mechanism is connected with the air inlet holes; the air guide plate is arranged on the inner wall of the tower barrel and spirally rises along the inner wall of the tower barrel;
the temperature measuring device, the top ventilation mechanism and the bottom ventilation mechanism are respectively connected with the control system.
Preferably, the top ventilation mechanism comprises an air outlet pipe, a variable frequency fan and an adjusting valve, one end of the air outlet pipe is connected with the air outlet hole, the opening of the other end of the air outlet pipe faces the interior of the engine room, the variable frequency fan and the adjusting valve are arranged on the air outlet pipe, and the variable frequency fan and the adjusting valve are respectively connected with the control system; the bottom ventilation mechanism comprises a switch valve and an air inlet pipe, one end of the air inlet pipe is connected with the air inlet hole, the other end of the air inlet pipe faces the engine room, and the switch valve is arranged on the air inlet pipe.
Further preferably, the air inlet duct is flared.
Further preferably, the air inlet holes are formed in the bottom of the tower.
Further preferably, the air outlet is provided in the heat concentration area.
Further preferably, the air outlet is arranged at the bottom of the cabin shell.
Further preferably, the temperature measuring device is arranged on the top of the cabin.
The invention discloses a method for radiating a fan engine room by adopting the fan engine room radiating system, which comprises the following steps:
when the fan runs, the temperature measuring device monitors the real-time temperature in the cabin and sends the temperature value to the control system, and the control system is preset with a plurality of levels of temperature warning thresholds and the rotating speed of the variable frequency fan and the opening degree of the regulating valve corresponding to the temperature warning thresholds of all levels;
when the temperature monitored by the temperature measuring device reaches a temperature warning threshold value of a certain level, the control system controls the switch valve to be fully opened, and simultaneously controls the variable frequency fan to be opened and reach a corresponding rotating speed, and the regulating valve is opened to a corresponding opening degree; the air entering from the air inlet hole spirally and quickly rises into the engine room along the air guide plate on the inner wall of the tower barrel, flows through the interior of the engine room, and is discharged out of the engine room through the air outlet hole to bring out heat;
and when the temperature monitored by the temperature measuring device is less than the temperature warning threshold value, the control system controls the switch valve, the variable frequency fan and the regulating valve to be closed.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a fan cabin heat dissipation system, which is characterized in that air entering from an air inlet hole rises into a cabin in a spiral acceleration mode and then is discharged from an air outlet hole, a turbine effect is formed between a top ventilation mechanism and a bottom ventilation mechanism, the effect of stabilizing the flow and accelerating the movement speed of the air in a tower barrel is achieved, heat is taken out when the air flows through the cabin, the temperature in the cabin is quickly and effectively reduced at low cost in a mode of increasing the air circulation quantity inside and outside the cabin and improving the air circulation speed, and meanwhile, the oil smoke in the cabin can be prevented from polluting a fin channel of a cooler. The system is safe, reliable and high in automation degree, labor cost is reduced, operating cost is lowered, and heat dissipation capacity of the existing fan is improved. Structural design is reasonable, can effectively promote the heat-sinking capability of current fan, has improved the security and the stability of fan operation.
Further, when the cooling system is closed, the regulating valve and the switch valve can be closed, so that the sealing performance of the fan is guaranteed, and the low temperature of the engine room in winter is prevented. Through governing valve and variable frequency fan, can adjust the flow of entering air, control is nimble.
Furthermore, the air inlet pipe is a flared bell mouth, so that the air inlet amount in unit time can be increased, and the efficiency is high.
Furthermore, the air inlet hole is formed in the bottom of the tower barrel, and heat deposited in the tower barrel can be taken away when air rises.
Furthermore, the air outlet is arranged in a heat concentration area, so that heat can be timely and effectively controlled from the source, and the efficiency is high.
Furthermore, the air outlet is formed in the bottom of the cabin shell, so that the cabin can be effectively prevented from being flooded in rainy days.
Furthermore, the temperature measuring device is arranged at the top of the cabin, and because hot air is easy to gather at the top of the cabin firstly, the temperature measuring device can monitor high temperature at the first time.
According to the method for radiating the fan engine room by adopting the fan engine room radiating system, the temperature measuring device is adopted to monitor the temperature in the engine room in real time, the amount of the air entering the engine room is adjusted in real time according to the preset radiating strategy, the inside of the fan engine room can be effectively radiated in time, manual participation is not needed, the automation degree is high, the labor cost is reduced, the operating cost is reduced, and the safety and the stability of the operation of the fan are improved.
Drawings
FIG. 1 is a schematic view of the overall structure of a fan nacelle heat dissipation system of the present invention;
fig. 2 is a top view of an air deflector of the present invention.
In the figure: 1-temperature measuring device, 2-top ventilation mechanism, 3-bottom ventilation mechanism, 4-air guide plate, 5-air outlet hole and 6-air inlet hole.
Detailed Description
The invention will now be described in further detail with reference to the following drawings and specific examples, which are intended to be illustrative and not limiting:
FIG. 1 shows a fan nacelle heat dissipation system of the present invention, which includes a temperature measuring device 1, a top ventilation mechanism 2, a bottom ventilation mechanism 3, an air deflector 4, and a control system;
the temperature measuring device 1 and the top ventilation mechanism 2 are arranged in the engine room, and the temperature measuring device 1 is preferably arranged at the top of the engine room. The cabin shell is provided with an air outlet 5, and the air outlet 5 is preferably arranged at the bottom of the cabin shell. The air outlet 5 is arranged in a heat concentration area in the cabin, such as an area where high-temperature-prone components such as a gear box are located. The wall at the bottom of the tower barrel is provided with air inlet holes 6, and the air guide plate 4 is arranged on the inner wall of the tower barrel and spirally rises along the inner wall of the tower barrel; the top ventilation mechanism 2 comprises an air outlet pipe, a variable frequency fan and an adjusting valve, one end of the air outlet pipe is connected with the air outlet hole 5, the opening of the other end of the air outlet pipe faces the interior of the engine room, the variable frequency fan and the adjusting valve are arranged on the air outlet pipe, and the variable frequency fan and the adjusting valve are respectively connected with the control system; the bottom ventilation mechanism 3 comprises a switch valve and an air inlet pipe, one end of the air inlet pipe is connected with the air inlet hole 6, the other end of the air inlet pipe is a flared bell mouth facing the engine room, and the switch valve is arranged on the air inlet pipe.
The temperature measuring device 1, the top ventilation mechanism 2 and the bottom ventilation mechanism 3 are respectively connected with a control system. The control system can adopt a PLC with threshold value comparison and control functions.
The air deflector 4 can be a 20 x 40cm thin sheet made of common light PVC plate and fixed on the inner wall of the tower barrel through a fastener.
The fan engine room heat dissipation system of the invention is in operation:
when the fan runs, the temperature measuring device 1 monitors the real-time temperature in the cabin and sends the temperature value to the control system, and the control system is preset with a plurality of levels of temperature warning thresholds (such as four levels of temperature high warning, temperature high warning and temperature high warning), and is preset with the rotating speed of the variable frequency fan and the opening degree of the regulating valve corresponding to the temperature warning thresholds of each level;
when the temperature monitored by the temperature measuring device 1 reaches a temperature warning threshold value of a certain level, the control system controls the switch valve to be fully opened, and simultaneously controls the variable frequency fan to be opened and reach a corresponding rotating speed, the regulating valve is opened to a corresponding opening degree, the higher the alarm level is, the larger the opening degree of the regulating valve is, and the higher the rotating speed of the fan is; air entering from the air inlet holes 6 spirally and quickly rises into the engine room along the air guide plate 4 on the inner wall of the tower barrel, flows through the interior of the engine room, is discharged out of the engine room through the air outlet holes 5, and brings heat out, so that the heat exchange efficiency of the air inside and outside the fan is improved;
when the temperature monitored by the temperature measuring device 1 is lower than the temperature warning threshold value, the control system controls the switch valve, the variable frequency fan and the regulating valve to be closed.
It should be noted that the above description is only one embodiment of the present invention, and all equivalent changes of the system described in the present invention are included in the protection scope of the present invention. Persons skilled in the art to which this invention pertains may substitute similar alternatives for the specific embodiments described, all without departing from the scope of the invention as defined by the claims.
Claims (8)
1. A fan engine room heat dissipation system is characterized by comprising a temperature measuring device (1), a top ventilation mechanism (2), a bottom ventilation mechanism (3), an air guide plate (4) and a control system;
the temperature measuring device (1) and the top ventilation mechanism (2) are arranged in the engine room, an air outlet hole (5) is formed in the shell of the engine room, and the top ventilation mechanism (2) is connected with the air outlet hole (5); the bottom ventilation mechanism (3) is arranged in the tower barrel, air inlet holes (6) are formed in the wall of the tower barrel, and the bottom ventilation mechanism (3) is connected with the air inlet holes (6); the air guide plate (4) is arranged on the inner wall of the tower barrel and spirally rises along the inner wall of the tower barrel;
the temperature measuring device (1), the top ventilation mechanism (2) and the bottom ventilation mechanism (3) are respectively connected with the control system.
2. The fan nacelle heat dissipation system according to claim 1, wherein the top ventilation mechanism (2) comprises an air outlet pipe, a variable frequency fan and an adjusting valve, one end of the air outlet pipe is connected with the air outlet hole (5), the other end of the air outlet pipe is opened towards the inside of the nacelle, the variable frequency fan and the adjusting valve are arranged on the air outlet pipe, and the variable frequency fan and the adjusting valve are respectively connected with the control system; the bottom ventilation mechanism (3) comprises a switch valve and an air inlet pipe, one end of the air inlet pipe is connected with the air inlet hole (6), the other end of the air inlet pipe faces the engine room, and the switch valve is arranged on the air inlet pipe.
3. The blower compartment heat dissipation system of claim 2, wherein the air inlet duct is a diverging flare.
4. Blower nacelle heat dissipation system according to claim 2, wherein the air inlet openings (6) are provided at the bottom of the tower.
5. Blower nacelle heat dissipation system according to claim 2, wherein the air outlet (5) is provided in a heat concentration area.
6. Blower nacelle heat dissipation system according to claim 2, wherein the air outlet (5) is provided at the bottom of the nacelle housing.
7. Blower nacelle heat dissipation system according to claim 2, wherein the temperature measuring device (1) is arranged at the top of the nacelle.
8. The method for cooling the fan engine room by using the fan engine room cooling system as claimed in any one of claims 2 to 7, is characterized by comprising the following steps:
when a fan runs, the temperature measuring device (1) monitors the real-time temperature in the cabin and sends the temperature value to the control system, and the control system is preset with a plurality of levels of temperature warning thresholds and the rotating speed of the variable frequency fan and the opening degree of the regulating valve corresponding to the temperature warning thresholds of all levels;
when the temperature monitored by the temperature measuring device (1) reaches a temperature warning threshold value of a certain level, the control system controls the switch valve to be fully opened, and simultaneously controls the variable frequency fan to be opened and reach a corresponding rotating speed, and the regulating valve is opened to a corresponding opening degree; air entering from the air inlet hole (6) spirally accelerates along an air guide plate (4) on the inner wall of the tower barrel to rise into the engine room, flows through the interior of the engine room, is discharged out of the engine room through the air outlet hole (5), and brings heat out;
when the temperature monitored by the temperature measuring device (1) is lower than the temperature warning threshold value, the control system controls the switch valve, the variable frequency fan and the regulating valve to be closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911129401.6A CN110761959A (en) | 2019-11-18 | 2019-11-18 | Fan cabin heat dissipation system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911129401.6A CN110761959A (en) | 2019-11-18 | 2019-11-18 | Fan cabin heat dissipation system and method |
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| Publication Number | Publication Date |
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| CN110761959A true CN110761959A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911129401.6A Pending CN110761959A (en) | 2019-11-18 | 2019-11-18 | Fan cabin heat dissipation system and method |
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| CN (1) | CN110761959A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623153A (en) * | 2021-10-12 | 2021-11-09 | 常州优谷新能源科技股份有限公司 | Wind power generator cabin cooling system based on tower drum air supply |
| CN114087142A (en) * | 2021-11-30 | 2022-02-25 | 中国华能集团清洁能源技术研究院有限公司 | Cabin dehumidification system |
| CN115681032A (en) * | 2022-11-03 | 2023-02-03 | 华能国际电力股份有限公司安徽风电分公司 | Heat dissipation system for wind driven generator |
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