Traction ventilation fan for alternating-current transmission electric locomotive and locomotive comprising same

Abstract

The invention provides a traction ventilation fan for an alternating-current transmission electric locomotive and a locomotive comprising the same. The traction ventilation fan comprises a main air cylinder, a flow guide cylinder, a diffusion cylinder, a motor and a centrifugal impeller; the flow guide cylinder is arranged at the first end of the main air cylinder, and the diffusion cylinder is arranged at the second end of the main air cylinder; the motor is installed in the main air cylinder and is in driving connection with the centrifugal impeller; the centrifugal impeller is contained inthe main air cylinder and is close to the flow guide cylinder, the centrifugal impeller comprises an air inlet cover and a plurality of blades, the blades are in driven connection with the motor, andthe top ends of the blades are inclined surfaces; and the air inlet cover is arranged at the top of the centrifugal impeller in a covering mode, the inner wall of the air inlet cover is attached to the inclined surfaces, and the top surface of the air inlet cover communicates with the flow guide cylinder. The ventilation fan can obtain a better pressurizing effect on the premise that the size is not increased. The invention further provides the locomotive comprising the ventilation fan on the other hand.

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to a traction fan for an AC drive electric locomotive and the locomotive. Background technique [0002] The traction motor is the drive component for locomotive operation. When the locomotive pulls the train to run fast, the electromagnetic wire inside the traction motor passes a large current, and because the electromagnetic wire has a certain resistance, a large amount of heat will be generated. In order to ensure the normal traction work of the locomotive and prevent the motor from being damaged by heat accumulation and temperature rise, the locomotive needs to be equipped with a fan for forced heat dissipation. The matching fan is called a traction fan, which is an indispensable and important part of the locomotive. [0003] Since a locomotive requires as many traction cars as possible or to achieve the highest possible operating speed, it is desirable to use a traction unit with...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a traction fan for an AC drive electric locomotive. This invention solves the problem that the existing traction fan can no longer meet the requirements of the locomotive installation space dimensions and the weight of the whole vehicle, and cannot operate the locomotive at a high speed. Technical issues with efficient cooling of excess heat generated at speed

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