Increase the amount of lubricating oil, solve the problem of large fan vibration

Increase the amount of lubricating oil, solving the problem of large fan vibration - 2019 06 - 18 hangzhou can ma szu-ts 'ung large fan vibration problem is common, usually by the blade replacement, corrosion, dust, or Angle adjustment caused by the imbalance caused by the quality, as long as through the field dynamic balance can solve, but there are some exceptions. 1, event after a 600 mw turbo blower vibration is larger when the phone is switched on, the spectrum is given priority to with 1 x frequency doubling, is unbalanced quality cause the phenomenon of vibration, then dynamic balance on the blower fan, increase after 3 times, vibration decreases obviously, achieve good range. The next day, start again, the biggest booster fan vibration value to 126 um, more than the alarm value. Analysis of the vibration test data, it turned out that there is unbalance, and measure of peace and balance weight on the contrary, it shows a imbalance on the quality of the fan in change. Unit 2, analysis and processing according to the understanding, the blower fan during overhaul maintenance project for: wheel hub oil change, leaf Angle measurement, the center and the ash removal. The analysis results are as follows: the first: if the blower fan is bad for the, can reflect on the spectrum, but the frequency spectrum of 1 x times is given priority to, so can be ruled out; Second: during the overhaul of blower fan qing ash, dynamic balance again, again, is unlikely to cause of formation; Third: during overhaul, there is only one blade tear open outfit, could not have caused such a big mass unbalance; Fourth: blower fan had never repair during the overhaul of main components, inspection didn't also found that the friction is like, so also rule out the possibility of friction; Fifth: wheel hub oil change is fan repair process, will do according to regulations, the blower fan, a total of 45 l need lubricating oil, on inquiring, maintenance staff unable to clear the amount. Analysis that the fan bearing as oil-immersed, lubricating oil, the amount is too small fan rotation leads to uneven distribution of oil in the wheel tank, causing quality imbalance, is likely to lead to increased vibration. 3, the results for wheel tank to refuel, start the blower fan, to measure the vibration of the aggravating location before aggravating instead; Dismantling and a counterweight, restart again, the vibration value is good. （ Source: turbine supervision)