Once the centrifugal compressor runs the surge phenomenon, the operation of the unit and the pipe network has the following characteristics:
(1) the outlet pressure and inlet flow rate of the gas medium vary greatly, and sometimes it may produce the phenomenon of gas flow reversal. The gas medium is transferred from the compressor to the flow inlet, which is a dangerous condition.
(2) the pipe network has a periodic vibration, large amplitude, low frequency, and a periodic "roar" sound.
(3) the body of compressor shell, strong vibration, vibration of bearings are strong, and issued a strong periodic flow, due to the strong vibration, bearing sliding conditions will run case of the main destruction, Bush will burn, even broken shaft, the rotor and the stator will cause friction, collision, sealing elements will be seriously damaged.