High vibration in the gearbox of the axial flow fan in the circulating water cooling tower
Thread Content
I have an axial flow fan gearbox for a circulating water cooling tower, and its vibration level is high; however, the vibration readings at the motor end are normal. The same issue persists even after replacing the gearbox. Are there any other aspects that might have been overlooked?
In the previous image, is there a schematic diagram of the gearbox structure?
The most crucial aspect of this type of transmission is that the lubricating oil must be clean, and it needs to be replaced regularly. For the conical bearings at the bottom, it is necessary to regularly check the axial clearance. A newly installed transmission is not necessarily fault-free; a thorough inspection and diagnosis remain the best approach. For reference.
Let’s see if it’s a alignment issue; the connecting rod of this type of fan is long, and even if it were a straight rod, it would still be difficult to align properly. You said the motor vibration isn’t severe; is it because the connecting rod has two sections?
Blade dynamic balancing? Is it running at full speed?
Is the cooling tower cast or steel-framed?