The utility model discloses an annular carbon
powder suction hood structure of a giant hydro-generator. The annular carbon
powder suction hood structure is composed of a lower dust hood, a middle dust hood, a first dust collection
pipe, a second dust collection
pipe and a dust suction device. The lower dust collecting cover, the middle dust collecting cover and the upper dust collecting cover are connected into a closed outer cover through bolts and screws, and the closed outer cover is in clearance fit with the collecting ring to form a closed annular cavity. The
closed cavity is connected with the dust suction device into a whole through the second dust collection
pipe, so that dust generated by the collector ring and the carbon
brush is absorbed. According to the structure, carbon
powder at the collector ring is effectively collected, and the segmented dust collection cover is adopted to facilitate disassembly and cleaning; the dust collection holes are formed in the upper dust collection cover and the lower dust collection cover correspondingly, the dust collection area is increased, efficient dust collection of all parts in the dust collection covers is achieved, the problems that a traditional structure is poor in dust collection effect, and dust at the lower ends of the dust collection covers cannot be effectively collected are solved, and short-circuit
discharge accidents caused by the dust are effectively avoided. And the installation convenience, the operation stability and the operation reliability of the unit are improved.