Does the temperature of the turbine oil affect the vibration levels of the turbine?
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Does a higher temperature controlled by the turbine oil system lead to a decrease in oil viscosity, resulting in a thinner oil film and increased vibration levels of the turbine?
Generally, there are requirements regarding the temperature of lubricating oil, as this temperature level affects vibration
Oil used in steam turbines has strict requirements regarding viscosity, as viscosity affects the formation of the oil film on the bearing surfaces; a poor oil film can directly impact the vibration levels of the turbine unit. Generally, after maintenance, the oil quality of large units must be analyzed; they can only be put into operation once it is found to be satisfactory.
What does the temperature effect influence that causes the vibration value to increase?
The effect of temperature lies mainly in the change in the stiffness of the oil film and the variation in load caused by the change in the rotor’s position within the bearings, which leads to changes in vibration.
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