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Dear All,
PGT10 is a double shaft HDGT driving 10MW power generator. The journal bearings used on the HP (10.800RPM) and LP (7.900RPM) rotor are of tilting-pad type. This machine is equipped with Bently Nevada monitoring system and a seismic probe is installed on the top cover of the 1st and 4th bearing.
On Mark V; the seismic vibration reading on bearing 1 is about 3 mm/s which is a low and quite value. But the displacement reading looks a little bit higher than it should be for both X and Y probes.
On Bently Nevada; Actual overall values (displacement micrometer peak To Peak) are: X = 95 microns and Y= 93 microns. The readings what we used to have are: X= 46 and Y= 44 microns.
One more thing; the metal temperature of bearing 1 is higher than the others 3 bearings.
Someone help me to understand what's happening on this tilt-pad bearing 1?
PGT10 is a double shaft HDGT driving 10MW power generator. The journal bearings used on the HP (10.800RPM) and LP (7.900RPM) rotor are of tilting-pad type. This machine is equipped with Bently Nevada monitoring system and a seismic probe is installed on the top cover of the 1st and 4th bearing.
On Mark V; the seismic vibration reading on bearing 1 is about 3 mm/s which is a low and quite value. But the displacement reading looks a little bit higher than it should be for both X and Y probes.
On Bently Nevada; Actual overall values (displacement micrometer peak To Peak) are: X = 95 microns and Y= 93 microns. The readings what we used to have are: X= 46 and Y= 44 microns.
One more thing; the metal temperature of bearing 1 is higher than the others 3 bearings.
Someone help me to understand what's happening on this tilt-pad bearing 1?