Cooling fan for traction transformer system of motor train unit train

Abstract

The invention relates to a cooling fan for a traction transformer system of a motor train unit train, which comprises a fan shell (1), a flow guidance fan impeller (2), a motor (3), an air inlet impeller (4) and an air outlet impeller (5), wherein the flow guidance fan impeller (2) is fixedly arranged in the fan shell (1); the motor (3) is arranged in a hub of the flow guidance fan impeller (2); a rotating output shaft (31) of the motor (3) extends out of two ends of the motor body; the air inlet impeller (4) is arranged at one end, close to an air inlet (11), of the rotating output shaft (31) of the motor (3) and is positioned in the fan shell (1); and the air outlet impeller (5) is arranged at the other end, close to an air outlet (12), of the rotating output shaft (31) of the motor (3) and is positioned in the fan shell (1). The cooling fan is characterized by enough wind power and small size, and is particularly suitable for cooling and radiating the traction transformer system of the motor train unit train with the speed of over 300 kilometers per hour.

Description

technical field [0001] The invention relates to a fan for cooling the traction transformer system of a high-speed electric locomotive. Specifically, the air volume generated by the fan passes through the radiator in the traction transformer system at a certain pressure to take away the heat generated during the operation of the traction transformer of the locomotive. , to ensure the heat load level of the entire high-speed electric locomotive traction transformer system, especially a cooling fan for the traction transformer system of an EMU train. Background technique [0002] According to the national railway development strategy, the country invested heavily in the high-speed railway network, and introduced and produced 200km / h EMU locomotives. With the acceleration of the national high-speed railway construction, the country vigorously advocates the introduction, digestion, absorption and re-innovation. On the basis of the 200-kilometer EMU locomotive, it vigorously indep...

AI Technical Summary

Problems solved by technology

[0003] At present, the cooling fan of the traction transformer system of the EMU mainly adopts the structure of "moving impeller + rear deflector impeller" (R+S level) or "front deflector impeller + movable impeller" (P+R level). The fan with this structure has only one moving impeller, resulting in less wind power, and its heat dissipation effect on the traction transformer system of the EMU train is not ideal, and it is difficult to meet the cooling and heat dissipation requirements of the traction transformer system of the EMU train with a speed of more than 300 kilometers per hour

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