induce draft fan 1

[ray308]

our i.d.fan turbine drive usually tripped off in normal operation. guys can you give your ideas regarding these?

 

[metengr]

Tripped off from what - excessive vibration, low bearing oil, instrumentation trip under normal boiler operation?

 

[rmw]

You didn't give us much information but you posted this in the boiler forum, so I will make an educated guess (school of hard knocks.)

You have too much air leakage somewhere upstream of the fan. Find the leaks, more probably lots of little ones rather than one large one, and fix them and watch your fan amps come down and the tripping stop.

If you didn't have this problem before and it gradually started, and you have no other abnormal conditions like the fan dragging on something, it is air leaks.

rmw

 

[ray308]

rmw
thanks for the info. well our idfan parameters seems to be normal at all times.minimum vibration.

I found out that there is an oil leaking on east part of our babbit bearing of idfan turbine.well this contribute to the tripping of our turbine?

 

[ray308]

metengr

our idfan turbine have minimum vibration,lube oil temp is ok.in a normal condition it suddenly tripped off..
I noticed that on east side of turbine bearing the oil leak. well it contribute to the tripping?