high vibration on lobe blower due to airborne of silencer vessel

I have worked on many 2-lobe blowers up to 600-hp with high vibrations, but in no case was replacement of suction or discharge silencers necessary. What is the shaft speed and dominant pulsation frequency? Did you inspect structure for failure of case, nozzles and internals? Has the sound level changed indicating possible silencer deterioration? Pulsation amplitude changes directly with static pressure and load, so make sure load has not changed, no overload, and no blockage of inlet silencer intake (filter or screen).

Walt

Add Reply

×
×
×
×