Protective device for collector ring of generator

The utility model discloses a protective device for a collector ring of a generator, the protective device for the collector ring of the generator comprises two protective structures, the two protective structures and two collector ring assemblies are arranged in a one-to-one correspondence manner, each protective structure comprises a protective shell and a vacuumizing assembly, the protective shell is detachably connected to a rotating shaft, and the protective shell and the rotating shaft form a protective closed cavity; the collecting ring assembly is distributed in the protective closed cavity; and the vacuumizing assembly is used for vacuumizing the protective closed cavity. The protection effect on the collector ring is effectively improved, and the working performance and the service life of the two collector ring assemblies of the generator rotor structure are ensured not to be affected by the external environment. 本实用新型公开了发电机集电环用防护装置，该发电机集电环用防护装置包括两个防护结构，两个防护结构与两个集电环组件一一对应设置，防护结构包括防护壳和抽真空组件，防护壳可拆卸连接