Inherent frequency active silencer for exhaust noise of internal combustion engine power station

The utility model belongs to the technical field of internal combustion engine power station tail gas noise control, and relates to an inherent frequency active silencer for internal combustion engine power station tail gas noise. According to the silencer, the inherent frequency of the resonant cavity of the silencer can be dynamically adjusted according to the real-time running state of the internal combustion engine, so that the inherent frequency of the resonant cavity is matched with the reference frequency of tail gas noise, and the noise reduction effect is improved. Under the action of the resonance adjusting mechanism, an adjusting disc in the resonance adjusting mechanism is driven to move away from the air outlet pipe in the axial direction of the resonance cavity, so that the number of communicated vent holes in the resonance cavity is increased, and the inherent frequency of the resonance cavity is increased; when it is detected that the exhaust fundamental frequency noise of the internal combust