Boiler exhaust fan
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Waste liquid combustion boiler specifications: 950 degrees/steam production of 3 MPa/20 t. The specifications of the exhaust fan are a flow rate of 52,000 Nm3/h, a total pressure of 800 mmH2O, and a motor power of 450 KW. The main shaft shown in the image has been at the construction site for over two years. Does it affect dynamic balance? Are there any other effects?
If it is rotated regularly, the shaft may bend over time.
There must be an impact; it’s just a matter of how great that impact is. Is there also a way to store the shaft like this?
Dynamic balancing has no impact. Over time, the shaft may bend. Align the shaft.
There is definitely an impact; it should be rotated 180 degrees regularly in the correct position, with a support at the bottom to prevent excessive load on the shaft journals on both sides of the impeller. If vibration levels are too high after installation and operation, dynamic balancing can be performed on-site to address this issue.
It’s been left there for two years; wasn’t it rotated at any point?