Generator rotor structure and generator

Abstract

The invention relates to a generator rotor structure, which includes a balance plate, the balance plate is arranged between the generator exciter rotor and the non-shaft end bearing and fixed on the generator shaft, and the balance plate is provided with a balance groove , the opening of the balance groove faces the non-shaft extension bearing, the balance groove is provided with an entrance for placing a balance weight, and according to the needs of dynamic balance, a balance weight is fixed at a matching position in the balance groove. In the present invention, since the balance plate is installed on the outside of the non-shaft extension of the generator, it does not affect the maintainability and operability of the generator; by adjusting the size and weight of the balance block in the balance tank, the dynamic balance of the generator rotor is detected and adjusted on site, reducing the The residual unbalance of the generator reduces the vibration and noise of the generator and improves the vibration and noise reduction performance of the unit. The invention also relates to a generator comprising such a generator rotor structure.

Description

technical field [0001] The invention relates to the field of motors, in particular to a generator rotor structure and a generator. Background technique [0002] For large generators, the dynamic balance of the rotor is very critical. At present, it is generally adopted to install a balance block on the fan impeller at the shaft extension end of the generator, and the non-shaft extension end, that is, the exciter end, is on the main pole rotor coil frame close to the exciter rotor. The balance slot is opened, and the dynamic balance adjustment is realized by installing a balance block on the balance slot and welding the balance block firmly in the balance slot. Since the outer diameter of the main pole rotor coil frame is small, the opened balance slot is relatively small. And because it is close to the main pole coil, it is difficult to weld the balance weight. In particular, because the coil frame cannot be replaced in this structure, it is impossible to realize the balance...

AI Technical Summary

Problems solved by technology

[0002] For large generators, the dynamic balance of the rotor is very critical. At present, it is generally adopted to install a balance block on the fan impeller at the shaft extension end of the generator, and the non-shaft extension end, that is, the exciter end, is on the main pole rotor coil frame close to the exciter rotor. The balance slot is opened, and the dynamic balance adjustment is realized by installing a balance block on the balance slot and welding the balance block firmly in the balance slot. Since the outer diameter of the main pole rotor coil frame is small, the opened balance slot is relatively small. And because it is close to the main pole coil, it is difficult to weld the balance weight. In particular, this structure cannot realize the balance adjustment of the unit during on-site commissioning because the coil frame cannot be replaced.

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