Wind driven generator

Abstract

The invention discloses a wind driven generator. The wind driven generator comprises a tower drum fixed to the ground, a cabin located on a tower frame, a power generator arranged in the cabin, a rotor which rotates relative to the cabin and comprises a plurality of rotor blades, and an air circulation system used for deicing the blades and enabling the blades, the cabins and the tower drum to communicate. The air circulation system comprises a controllable air inlet formed in the position, away from the cabin by a certain distance, of the tower drum, an air filter arranged on the upper portion of the air inlet, a heater arranged on the upper portion of the air filter, and an internal heat exchanger used for heat exchange with the power generator in the cabin. Airflow circulation passages are arranged in the blades. Through the airflow circulation passages, airflow entering the blades flow through blade tips firstly and then flow through roots, and the airflow is exhausted out through small holes in the roots. By the adoption of the deicing system, the temperature, cleanliness and flow of air entering the cabin are controlled more effectively, the system does not occupy any space of the cabin, and the overall deicing effective is better.

Description

technical field [0001] The present invention relates generally to wind power generators, and more particularly to deicing of rotor blades of wind power generators. Background technique [0002] In recent years, wind power has attracted more and more attention as an environmentally friendly and relatively cheap alternative energy source. As interest in wind power continues to grow, considerable effort has been devoted to the development and production of reliable and efficient wind turbines. [0003] Typically, wind turbines include a rotor with multiple blades mounted within a housing or nacelle on top of a frame or tubular tower, available wind turbines may have large rotors (eg 30 meters in diameter or more). The blades of these rotors convert wind energy into a rotational torque or force that drives one or more generators, which are connected to the rotor through a gearbox. The gearbox boosts the inherently low rotational speed of the turbine rotor, allowing the generat...

AI Technical Summary

Problems solved by technology

First, the air enters from the tail of the cabin, which is usually inconsistent with the wind direction during operation, making it difficult to enter the wind; secondly, the incoming air must be filtered, sometimes heated or flow controlled, which requires the addition of many other devices, making the cabin more crowded , and once the air inflow speed is relatively large, it is difficult to control the air, and heating will be more difficult

The air enters from the bottom of the tower. Since the tower is tens of meters high, it is difficult for the air to reach the cabin after it flows in. These problems will increase the difficulty of deicing.

Second, the current method uses the pipeline ventilation in the blade to de-ice, but usually the airflow first flows through the blade root and then enters the blade tip. After the airflow reaches the blade tip, the temperature will drop significantly, making it difficult to remove the ice layer on the blade tip. Therefore, it will create difficulties in the overall deicing of the blade

[0009] Therefore, there is an urgent need to provide a wind-driven generator to solve the problems in the above-mentioned wind-driven generator, which can solve the problem that the air intake and blade tip ice layer are difficult to remove

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