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活塞式压缩机的排气管道和中间管道中之 压力波动会降低压缩机工作的经济性和安全性。 压力波动会增加压缩机的所需功率,破坏 阀的工作,引起管道内不正常的摆动。管道摆 动在一些情况下是造成与管道相联的部件、管 道设备以及建筑物等破坏的因素。 压力波动中最危险的是共振（谐振）,因 为它和较大的压力振幅同时产生。共振时外界 冲击（输气）频率与管道中气柱的固有振动频 率是一致的,并且排气管中最大压力的获得通 常与输气周期相符合的。如果外界冲击频率较 固有振动频率小2、3倍或其他整数倍时,则会 出现第二、第三次等谐波。
Piston compressor exhaust pipe and the middle of the pipeline pressure fluctuations will reduce the economy and safety of compressor work. Pressure fluctuations will increase the compressor power required to destroy the valve work, causing the pipe to swing abnormally. Pipe sway is in some cases the cause of damage to components associated with the pipe, piping equipment, and buildings. The most dangerous of the pressure fluctuations is resonance (resonance), since it is produced at the same time as a larger pressure amplitude. The frequency of external shock (gas transmission) at resonance is the same as the natural frequency of the gas column in the pipe, and the maximum pressure in the exhaust pipe is usually obtained in accordance with the gas transmission cycle. If the external impact frequency than the natural frequency of 2,3 times smaller or other integer multiple, then there will be the second and third harmonic.