Cooling system for offshore wind generating set

Abstract

The invention discloses a cooling system for an offshore wind generating set. The cooling system comprises a circulating pump, a filtering device, a radiator, a heating part, a three-way electromagnetic valve and an expansion tank which are arranged in a cabin and are connected end to end in turn to form a circuit, a seawater cooler arranged in seawater, and an electric control device, wherein a temperature detection device and a pressure detection device are arranged on a connecting pipeline between the radiator and the heating part in turn; the seawater cooler is connected with the three-way electromagnetic valve and the expansion tank respectively; and the electric control device is electrically connected with the temperature detection device, the pressure detection device, the heating part, the expansion tank and the circulating pump respectively. The seawater has a low temperature and a high heat exchange mass flow rate, so compared with the conventional system taking air as a cold source, the system taking the seawater as a final cold source is suitable for the development and application of a higher-capacity wind generating set; and the seawater cooler is soaked in the seawater, so the phenomenon that the air heat exchanger of the conventional cooling system is corroded by salt mist in the long-term using process is avoided.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a cooling system for offshore wind power generating sets. Background technique [0002] Wind energy is a clean and renewable energy source. Since 1996, the global installed capacity of wind power has grown at an average annual rate of 30%, exceeding 158 million kW by the end of 2009. my country's wind energy installed capacity is 25 million kW, ranking second in the world. [0003] When the wind turbine is running, a large amount of heat will be generated on the three major components of the gearbox, generator and inverter controller. If the heat is not discharged in time, the efficiency of the wind turbine will be greatly reduced, and eventually it will be paralyzed. Therefore, it is an indispensable and important measure to ensure the long-term and normal operation of wind turbines to be equipped with a cooling system with excellent performance and rapid cooling. [0004...

AI Technical Summary

Problems solved by technology

[0007] This cooling method uses air as the final cooling source. Due to the small mass flow rate of the air, the cooling effect is limited. When the capacity of the unit increases and the heat generation is greater, it is difficult to meet the cooling requirements.

[0008] At the same time, if this cooling system is used in offshore wind turbines, it will cause more serious problems

Because the air on the sea surface is humid and contains salt, it is easy to cause corrosion and damage to the air-cooled heat exchanger, and the service life is greatly shortened

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