Generator with assembled centrifugal fan

Abstract

The invention relates to a generator with an assembled centrifugal fan. The generator comprises a generator base, a front end cover and a rear end cover; a stator for generating a magnetic field; a rotor which is a conductor capable of rotating in a magnetic field generated by the stator; a rotating shaft which is connected to the middle part of the inner cavity of the generator base, extends away from the front end cover at one end in the direction of the front end cover and is matched with an external acting piece; and an assembled centrifugal fan which is connected to the rotating shaft and located on the side, close to the front end cover, of the inner cavity of the generator base. When rotating in cooperation with an external acting part, the rotating shaft can drive the rotor to rotate in a magnetic field generated by the stator so as to generate induced electromotive force and drive the assembled centrifugal fan to rotate so as to dissipate heat of an inner cavity of the generator base. The assembled centrifugal fan comprises a front plate, a rear plate and blades, connecting holes matched with the blades are formed in the front plate and the rear plate, the blades are connected between the front plate and the rear plate, and the blades can be arranged in corresponding sizes according to the requirements of different generators.

Description

technical field [0001] The invention relates to the technical field of generators, in particular to a generator with an assembled centrifugal fan. Background technique [0002] In a synchronous generator, the cooling design of the winding is a very important part of the design of the generator. The cooling effect of the winding directly affects the temperature rise of the winding, and affects the reliability and economy of the generator. Air-cooled generators are generally equipped with a centrifugal fan at one end of the generator rotor, through which the air enters the generator from one end of the generator, passes through the stator and rotor of the generator, and transfers the heat generated by the generator from the generator The other end is taken out to achieve the purpose of heat dissipation of the stator and rotor. [0003] Usually, the centrifugal fans of larger power generators use cast aluminum parts or steel plate welded parts. The processing technology of cen...

AI Technical Summary

Problems solved by technology

Therefore, a centrifugal fan made by integral casting cannot meet the needs of generators with different speeds, different directions, and different powers at the same time.

To meet the needs of the generator, different casting molds need to be opened, which greatly increases the manufacturing cost

[0005] When designing a new centrifugal fan, due to the different air paths for heat dissipation of the generator, the heat generated by the generator is different. The centrifugal fan designed by theoretical calculation and simulation often has certain deviations from the test results in terms of heat dissipation, noise, and efficiency. , if you want to adjust, you need to open the mold again, which increases the cost of research and development

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