Air switching system of directly-driven wind power generator

Abstract

The invention relates to an air switching system of a directly-driven wind power generator, comprising an air blower, an air filter, a hydraulic system, a ventilation pipeline, an exhaust fan and a labyrinth seal. The air blower is mounted at the bottom of an engine room of the blower; the air blower is connected with one end of the ventilation pipeline; the other end of the ventilation pipeline is located in a wheel hub of the blower; the exhaust fan is arranged on the skylight at the top of the engine room; a top cover of the engine room capable of opening or closing automatically accordingto the operating condition of the blower is arranged above the exhaust fan; a hydraulic cylinder is arranged at the lower end of the top cover of the engine room; an oil inlet hole of the hydraulic cylinder is arranged at the bottom of the hydraulic cylinder; the hydraulic system is located in the engine room; the hydraulic system is provided with an oil pipe; the oil inlet hole of the hydraulic cylinder is connected with the oil pipe; the air filter is arranged at the bottom of the tower cylinder; and the labyrinth seal is arranged between the stator and rotor of the engine. When the blower stops, the invention can effectively prevent the corrosive gas, such as salt fog, and rain water from entering the inside of the blower.

Description

technical field [0001] The invention relates to an air exchange system of a direct drive wind power generator. Background technique [0002] During the power generation operation of the wind turbine, a large amount of heat will be generated. In order not to affect the normal operation of the fan, the heat must be discharged through the heat exchange system. At present, in order to solve the cooling problem of the fan, a blower fan is mostly installed in the fan cabin. During normal power generation, the external cold air enters the inside of the fan through the bottom of the tower, and the cold air inside the fan is introduced into the hub through the blower to cool the hub. There is a skylight on the top of the cabin, and the hot air inside the fan can be discharged into the atmosphere through the skylight. At the same time, when the fan is working normally, due to the positive pressure formed inside the fan, it can prevent humid air and rainwater from entering the inside ...

AI Technical Summary

Problems solved by technology

However, when the fan stops, the blower also stops working, and rainwater and corrosive gases can enter the fan through the skylight, corroding the electrical components inside the fan, especially in coastal areas, where salt spray corrosion is more serious

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