Temperature issues with the tilting pad bearings of compressors
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The tubular drive end has two temperature measurement points for the tilting bearing pads; one shows a higher temperature while the other shows a lower temperature, with a difference of up to 35°C. What could be the reason for this?
I still don’t understand the question; I’ll make a guess to see if it fits. First, it’s necessary to figure out the location of the measurement points; it’s best to take an external view image to see what they look like exactly, which will facilitate discussion. Usually, there is only one measurement point for a bearing; what you might see are two measurement points for two bearings located in a single, combined bearing housing. One is a supporting bearing, and the other is a thrust bearing. For reference.
The measurement points are on two different tiles of a tilting bearing
Suggestions: 1. Have the instrument checked to see if there is a broken wire； 2. A liquid film may form; use an oil film removal filter to filter the oil several times.
Check from the instrument perspective; examine the oil return temperatures at both ends
It depends on the installation location. The shaft does not rotate right in the center of the bearing, which ultimately results in the lower bearing having a higher temperature than the upper bearing, with the temperature on the side of the lower bearing being higher than that on the other side. When performing maintenance, you will also find that the wear of the bearing shells is often uneven as well.
The instrument checks show no issues. What does \"liquid film\" mean? The cleanliness of the oil is fine, grade 7
Both tiles are on the lower tile; currently, the taller one is getting 1 unit lower each day℃
We are unable to understand why the temperature difference between the two points on the same radial bearing (tilting bearing) at the front end of our turbine remains at 25°C. We will check the wear condition of the shaft bearings during maintenance and hope to get some advice from those with more experience!
Mine has just been serviced; the tiles aren’t worn out, but there’s a lot of carbon buildup. After removing that carbon buildup, it’s the same
We have also encountered similar situations, where two temperature measurement points were arranged on two tilting pad segments. The gap voltage data from the instruments was normal, and the feedback indicated the true values. At this time, it is recommended to check the alignment of the unit, that is, the alignment between the rotor and the front bearing housing. If the thrust disc is slightly tilted, it will result in a smaller thrust clearance on one side and a larger thrust clearance on the other side. In this way, if the oil film thickness of the two tiles is not consistent, it will lead to temperature differences.