vibration causes blowdown

[ahmadelozairi1]

In our plant, we got two different types of compressors, the first is a man turbo and the second is delmag delval, the man turbo compressor is tripped without blow down in case of high vibration on shaft bearing whilst the delval is trip with blow down in case of high vibration, thus i want to know what is philosophy of tripping the compressor with blow down in case of high vibration?, and what they worry about to blow down the compressor?

 

[GHartmann]

When you speak of blow-dwwn, are you referring to blow-off of the compressed gas?

For such a case when the compressor is tripped, the compressed gas is normally vented from the machine (sometimes back to suction) to prevent surging of the compressor.

The philosophy is most likely dependent on the manufacturer's standard practices.