Reasons and influence of temperature change of steam engine bearing and thrust bearing
December 03, 2018
Support bearing temperature
Reasons for change:
(1) bearing oil intake reduced into debris, oil hole is not smooth;
(2) oil cooler oil temperature change;
(3) turbine load increase axial heat transfer increase;
(4) shaft seal leakage is too large;
(5) bearing gold peeling, melting wear or cracking;
6. Bearing vibration is too large, causing oil film damage, poor lubrication;
7. Oil quality deteriorated, with water in the oil.
The influence of bearing temperature change:
(1) the bearing temperature rise, want to look at the relationship between the bearing temperature and oil temperature, average return oil temperature is less than the bearing temperature, analyzed is the bearing is generally higher, or an individual bearing temperature, check the oil pressure and oil flow, bearing temperature rise generally, as a general rule, be cooled oil is the oil temperature rise high or low oil pressure of causes;
(2) the bearing temperature rise, should also pay attention to the bearing, the oil temperature, general provisions shall not exceed 20 ℃, the temperature difference is too big, that might have inside bearing fault or lubricating oil quantity is insufficient, should strengthen the monitoring of bearing;
(3) if a bearing return oil temperature and temperature drop at the same time, the corresponding pressure also decreases, and the oil at constant temperature, usually is caused by the broken tile sharply, at this time should be according to the tile to load and position make corresponding accident forecast and countermeasures, and timely report the relevant departments of the meter reading, analysis on a regular basis.
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