Frost protection structure of wind power cooling system

Abstract

The present invention discloses an antifreeze structure of wind power cooling system which is used for cooling system of wind power. The cooling system includes a waterproof pump, a pressure gauge, a hydraulic station, a generator, a wheel box, a frequency transformer, a heat converter, a thermostaticregulator and a cooler, also includes a expansion water tank connected with the cooling system and can reflux and prevent icing expanding. A heater is set on the expansion water tank and a temperature sensor set inside; one end of the temperature sensor connects with the waterproof pump of the cooling system and the other end connects with the thermostaticregulator of the cooling system. Expansion water tank is adopted in the invention which guaranties security of the cooling system, improvescooling capacity of the unit and reduces cost; design of new wind power unit cooling system reduces cost and solves antifreeze problem in low-temperature area of the unit cooling system, and further improves wind power unit security level.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to an antifreeze structure of a wind power cooling system. technical background [0002] At present, wind turbines at home and abroad use different proportions of water and ethylene glycol to prepare antifreeze coolants to meet the requirements of low temperature environments. Although this method meets the working requirements of the low-temperature environment, it greatly reduces the cooling efficiency of the wind turbine, thereby reducing the working efficiency of the entire wind turbine. [0003] The existing wind turbine cooling systems are generally divided into two types: normal temperature type and low temperature type. The existing normal temperature type and low temperature type coolant ratio can not meet the minimum survival temperature (extremely low temperature) requirements, the normal temperature type coolant ratio of 60 (water): 40 (ethylene glycol), the lowest ...

AI Technical Summary

Problems solved by technology

The existing normal temperature type and low temperature type coolant ratio can not meet the minimum survival temperature (extremely low temperature) requirements, the normal temperature type coolant ratio of 60 (water): 40 (ethylene glycol), the lowest temperature can only reach -25°C, low-temperature coolant with a ratio of 50 (water):50 (ethylene glycol), the lowest temperature can only reach -35°C

The survival temperature of the normal temperature type is -30°C, and the low temperature type is -40°C. Once the temperature is lower than -25°C (normal temperature type) and -35°C (low temperature type), the coolant may freeze and expand to damage the pipeline , which in turn causes damage to a series of components such as the cooler, motor, and frequency converter, which poses a hidden danger to the safety of the wind turbine

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