Aluminum alloy variable chamber particle collision damper for pipeline vibration reduction

The invention belongs to the technical field of vibration control, and particularly relates to an aluminum alloy variable chamber particle collision damper for pipeline vibration reduction. The dampercomprises a pair of semi-circular ring column cavities, semi-circular ring cavity outer surface cover plates are arranged at the two ends of each semi-circular ring column cavity, a plurality of cavity inner unit partition plates are arranged inside each semi-circular ring column cavity, the plurality of cavity inner unit partition plates divide the interior of each semi-circular ring column cavity into a plurality of independent small cavities, and metal particles filled the small cavities. The metal particles inside the cavities can collide and rub against with one another along with a pipeline vibrated, so that the vibration energy of the system is consumed, wherein the filling rate of the metal particles inside the cavities is the main factor of affecting the vibration reduction effect of the pipeline. The da