Reasons for high return oil temperature of steam turbine bearings
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What is the reason for the high return oil temperature of steam turbine bearings? Urgent!!
Check whether the oil return line is blocked
1. Check whether the steam leakage from the steam seal is too large and analyze the moisture content in the oil.； 2 Check whether the oiling temperature is too high ； 3 Check whether the circulating water temperature is too high ； 4. Check whether the oil cooler has poor heat exchange ； 5. Check whether the steam turbine is overloaded or overloaded. ；
Supplement the third floor: 1. Is the flow rate too small? 2. Is the return oil temperature high due to high bearing bush temperature? Check whether the bearing bush temperature is normal.
1. The reason for oil: Oil temperature is too high or too low causing viscosity to increase ； Insufficient oil pressure and oil volume are not conducive to the formation of oil film ； There are problems with the oil quality, such as emulsification, too high acidity, etc. 2. High rotor vibration, poor alignment of the rotor of the unit, etc., resulting in high bearing temperature. ； 3. The turbine speed fluctuates too frequently, which may be caused by the failure of the rotor control components or the instability of the steam system, poor steam quality, fouling or blockage in the turbine flow channel, etc. 4. The load of the driving equipment is unstable.