High temperature of the tilting bearing in the low-pressure cylinder of the steam turbine
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The tilting bearings of the high-pressure cylinder of the steam turbine (Hangzhou Steam Turbine) are operating normally, the temperatures of the thrust bearings are within normal limits, and the vibration levels are also within acceptable ranges. When the turbine speed rises to around 8000, the temperature of the tilting bearings in the low-pressure cylinder increases to 90； Previously, a set of steam seals was replaced in the low-pressure cylinder; it was part of the planned major overhaul of the turbine. What caused it? Is it the oil circuit? All the dimensions of the tilting bearing shells are fine.
Has the bearing bush been replaced? What is the bearing clearance?
It should be considered in terms of the oil’s temperature and pressure as well as the clearance of the bearing shells, right?
How many measurement points are there on the bearing bush? If there are multiple measurement points, do they rise simultaneously? If it increases as the speed rises, recheck the concentricity, the amount of bearing shavings, and the wear.