Heat dissipation system and method for fan engine room

Abstract

The invention discloses a heat dissipation system and a method for a fan engine room, and belongs to the technical field of wind power operation and maintenance. The air entering through an air inlethole spirally accelerates and lifts the inside of the engine room and then is discharged through an air outlet, and the heat is brought out when flowing through the engine room; this method can reducethe temperature in the engine room quickly and effectively with a low cost by increasing the air circulation inside and outside the engine room and increasing the air circulation speed, and the oil smoke in the engine room can be prevented from polluting a fin channel of a cooler. The system is safe and reliable, with high degree of automation, the labor cost and the operating cost are reduced, and the heat dissipation capacity of the existing fan is improved. The structure design is reasonable, the heat dissipation capacity of the existing fan can be improved effectively, and the operation safety and stability of the fan are improved.

Description

technical field [0001] The invention belongs to the technical field of wind power operation and maintenance, and in particular relates to a cooling system and method for a fan nacelle. Background technique [0002] With the rapid development of wind power, the installed capacity of wind power continues to increase, and the proportion of wind power in the grid is getting higher and higher. Therefore, the requirements for the safe and reliable operation of wind turbines are getting higher and higher. At present, with the construction of wind power operation and maintenance teams and the improvement of personnel's business skills, common faults of wind turbines are almost under control, and the fault elimination rate can basically reach 100%. However, the equipment in the fan tower includes large-scale equipment such as frequency converters, control cabinets, and dry-type transformers. These equipments are relatively concentrated and will generate high temperatures during cont...

AI Technical Summary

Problems solved by technology

However, the equipment in the fan tower includes large-scale equipment such as frequency converters, control cabinets, and dry-type transformers. These equipments are relatively concentrated and will generate high temperatures during continuous operation. Ventilation holes are left, but the high temperature generated by poor ventilation cannot be discharged in time, and the temperature of the fan tower and the engine room is too high, which directly leads to the temperature rise of the high-temperature accumulation equipment and the temperature-sensing element, heating alarm, resulting in protection action and forced shutdown of the equipment , resulting in power loss and grid shock

[0003] After research, it is found that as the temperature of the engine room increases, the most obvious result is that it will seriously affect the lubricating oil temperature of the gearbox, and the hazards of the failure of the gearbox oil temperature are too high: 1. The limited load time increases year by year, and the oil temperature is ≥ 75 ℃, fan power limit operation, ≥ 80 ℃ lead to fan shutdown; 2. Increased calorific value → deterioration of lubrication characteristics → increased wear, decreased transmission efficiency, and eccentric load on the tooth surface

The fan's ability to adapt to the environment becomes worse; 3. Every time the average operating temperature increases by ten degrees, the service life of gear oil is reduced by half; high oil temperature → aggravated oil oxidation → changes in viscosity-temperature characteristics → deterioration of lubrication characteristics; 4. Affects the overall ventilation capacity of the engine room , the engine room temperature is significantly higher than the ambient temperature, the aging of components is accelerated, and electrical failures occur frequently

The above-mentioned faults caused by the high oil temperature of the gearbox and the high temperature of other equipment have brought many challenges to the daily operation and maintenance of the wind farm

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