Ventilation system of wind driven generator
A technology for wind turbines and ventilation systems, applied in the field of ventilation systems, can solve the problems of motor bearing temperature rise, small size, and large heat dissipation, and achieve the effects of reducing surface temperature rise, improving maintenance efficiency, and ensuring normal operation.
Active Publication Date: 2015-04-08
上海电气集团上海电机厂有限公司
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Problems solved by technology
Due to the large capacity and small size of the wind turbine, the heat emitted is large, resulting in excessive temperature rise of the motor bearings, which affects the overall performance of the motor
Method used
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[0014] In order to enable those skilled in the art to better understand the technical solution of the present invention, its specific implementation will be described in detail below in conjunction with the accompanying drawings:
[0015] see Figure 1 to Figure 3 , the ventilation system of a kind of wind power generator of the present invention, comprises internal ventilation device and external ventilation device, wherein,
[0016] The generator includes a casing 10, a rotor 11, a stator 12, a shaft end bearing 13 and a non-shaft end bearing 14, and front and rear end covers 15, 16, and the front and rear end covers 15, 16 are sleeved on the shaft one by one. On the outer end surfaces of the extension end bearing 13 and the non-shaft extension end bearing 14; the front and rear parts of the lower end surface of the casing 10 are respectively provided with a vent 17, 18; the outer surface of the rear end cover 16 is provided with cooling ribs and fixed towers;
[0017] The ...
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The invention discloses a ventilation system of a wind driven generator. The ventilation system comprises an internal ventilator and an external ventilator, wherein the internal ventilator consists of an inner fan and a cooler, the inner fan is arranged at the rear part of a rotating shaft and positioned in a case, and the cooler is arranged at the lower part of the case. The external ventilator consists of a volute, an outer fan, an outer cover, a wind guide device and a connecting device, wherein the volute is provided with a front air outlet and a lower port; the outer fan is arranged in the volute and arranged on the rotating shaft; the outer cover is connected with the outer side of the volute, the lower end of the cooler is communicated with an air outlet of the cooler, and the lower part of the inner side of the outer cover is communicated with an air vent of the volute; the wind guide device consists of a wind guide ring, one end of the wind guide ring is connected into the perforation of the volute, and the other end of the wind guide ring is fixedly arranged on the outer cover; and the connecting device consists of a pair of channel steel and a bottom cover plate, wherein the pair of channel steel is connected between the volute and a rear end cover, and the bottom cover plate is connected between the lower end surface of the volute and the inner sides of the pair of channel steels. The ventilation system solves the problems that the wind driven generator is large in unit capacity, small in motor volume, large in heat dissipation capacity, and high in temperature rise of a bearing at non-shaft extension end.
Description
technical field [0001] The invention relates to a ventilation system of a wind power generator. Background technique [0002] Conventional motor cooling air paths are divided into inner and outer air paths. The external air path is through the fan installed on the non-shaft extension end of the rotor. The fan rotates to generate wind pressure, sucks the cold air outside the motor, and transfers heat to the surroundings through the wind cover and the cover cooler installed outside the motor. In the air; the internal air path is a fan installed inside the casing of the motor. The wind pressure is formed through the rotation of the rotor, and the heat inside the motor passes through the air passages of the casing and the cooler to form a circulating air. The heat of the motor is directly blown to the outside of the motor through the external air path. Due to the large capacity and small size of the wind turbine, the heat emitted is large, resulting in excessive temperature ri...
Claims
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IPC IPC(8): H02K9/04H02K5/20
Inventor 刘木清朱燕孙申丰戴玥孙方圆
Owner 上海电气集团上海电机厂有限公司