Problems with compressor testing
Thread Content
During the test, the temperatures at the two measurement points of one tilting bearing on the compressor side differed significantly: one was around 45°C, while the other was around 95°C. The temperature rise trend was similar when load was applied, and the instrument control system indicated that the probes were installed properly. What could be the problem then? Could it be that there is an issue with the bearing corresponding to the higher temperature?
There are three tiles in the lower section; temperatures are measured on the tiles on both sides of the lower part. Logically, the temperatures should not differ much. Now it is suspected that the tile with the higher temperature has a problem
Please give some advice{:2_36:}
Is it large-scale equipment? Surprisingly, every tile has a temperature sensing point. Could you send a picture to share? Thanks! Regarding the issue reflected in the title, there may be a problem with the horizontal alignment of the shaft, or a shaft connection issue. It’s a phenomenon that usually only occurs when there’s resistance. It is recommended to look for the cause in these two aspects: has there been a problem with the levelness of the unit during the transition from static to dynamic conditions? ? ? For reference.
Yes, for the large-scale equipment, the temperature has now stabilized. We plan to check the situation again after the trial run is completed. These days, many tiles come equipped with temperature sensing elements; it’s probably not an issue with the shaft, as the vibration is quite stable – at 12,000 revolutions per minute, the vibration is only around 10 μm.
The so-called \"tension\" does not necessarily mean high vibration, especially in tilting types. I guess the worn areas will become visible after it’s disassembled; it would be great to share a video at that time. Thank you! :)
For thrust bearings, if there is a large temperature difference between the two measurement points, the most likely reason is uneven contact between the various bearing plates on the thrust pad and the thrust disc; only a few of these plates bear the axial force, especially the one that is exposed to high temperatures, which results in excessive stress and high temperatures.
Is the platinum resistance thermometer embedded? Is the resistance value within the normal range?