Silencing mechanism for chimney of power plant

The noise reduction mechanism of the power plant chimney comprises a smoke exhaust pipeline body, the smoke exhaust pipeline body comprises a smoke exhaust pipe used for exhausting smoke and a connecting pipe, the smoke exhaust pipe is located over the connecting pipe, and the outer wall of the smoke exhaust pipe is wrapped with a sound insulation assembly used for exhausting smoke and insulating sound. According to the device, the sound insulation sleeve is matched with the sound insulation cotton for sound insulation, and noise pollution is reduced; the sound insulation cotton is soaked by a water source, so that the sound insulation cotton cannot be damaged by high heat generated when the chimney discharges coal-fired flue gas; the cooling water disc which is of an annular structure and is provided with a plurality of cooling heads conducts circumferential soaking and sound insulation on the top of the sound insulation cotton, soaking is faster and more uniform, the weighing assembly monitors the weight of