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| Treatment of Large Vibration for Shaft of Steam Turbine Generator Set in Power Station |
| Sinoma Energy Conservation Limited |
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Abstract On a WHR power plant in Pakistan, when the turbine generator unit ran from rated speed to load carrying, there were different characteristics on the shaft vibration of No.3 and No.4 bearing. The shaft vibration of No.3 bearing was increased gradually but in several hours could run stably with a relative high amplitude while the shaft vibration of No.4 bearing kept rather large all the time. By checking the structural parameters of the bearings and comparing the bearings in similar turbine generator unit which was in normal operation, the reason for abnormal shaft vibration had been respectively found out. The vibration problem was mainly due to mass unbalance and poor thermostability. After remedying the defects one by one, the vibration had been decreased.
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Received: 28 May 2019
Published: 15 August 2019
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