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HIGH FREQUENCY IN STEAM TURBINE

Hi Experts, We are observing high frequency vibration in the steam turbine at 69,938 cpm. This individual frequency is dominant with amplitude of 5 mm/sec RMS. The same frequency is observed in hor, ver, axial directions. Rated speed: 1500 RPM. MFR : Dresser Rand, turbine directly coupled to fan. For vibration measurement we are using SKF microlog and accelerometer with magnet base mounting. Fan vibration is normal and no presence of 69,938 cpm. New equipment , we don't have previous...Read More...
Last Reply By Becar · First Unread Post

High vibration caused by Wind Force?

Hi All, Please explain or share if you have any articles regarding the wind force affect the Fin fan coolers. We have huge number of Fin fan coolers in our LNG plant. Some of the Fans particularly making lot of troubles and We suspect the wind force is the cause for this high vibration. Data: The Maximum Wind velocity is 40 m/s. We have both Induced and forced draught Air coolers (Fin fans). But Forced draught fan has the history of more high vibration and broken blade history. It is onshore...Read More...
Last Reply By Yousuf Masood · First Unread Post