【Weekly Topic】Discussion on sludge formation in the shaft bearings of vertical reciprocating compressors and high bearing temperatures
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【Weekly Topic】Discussion on sludge formation in the bearing shells of vertical reciprocating compressors and high bearing shell temperatures: The normal operating temperature for these bearing shells is around 55 degrees Celsius; after about 2 months of operation, their temperature gradually rises to 75 degrees Celsius, at which point interlock is triggered. Check that the bearing shells have 0.02–0.04 mm of sludge. The lubricating oil passed the incoming inspection; the main concerns are leakage of sealing and gas seal fluids into the lubricating oil. Are there any other issues?
High bearing temperature and sludge problems in vertical reciprocating compressors can be caused by various factors. Firstly, ensuring that the quality of the lubricating oil is satisfactory is a basic requirement, but the following points also need to be considered: 1. Check the condition of the bearing shells, shafts, and seals. If the sealing performance is poor, gases or other substances may penetrate into the lubricant, leading to a reduced lubrication effect and the formation of sludge. 2. Check whether the cooling system is working properly and whether the shaft bearings have sufficient heat dissipation. Excessively high temperatures may be caused by insufficient cooling. 3. Properly adjust the flow and pressure of the lubricating oil to ensure adequate lubrication and cooling. 4. Regularly clean the sludge and check the wear of the bearing shells; replace or repair them as necessary. By comprehensively examining these aspects, it is possible to effectively resolve the problem and prevent similar issues from occurring in the future. .
Check the bearing shell clearance and compare it to see how much it deviates from the manufacturer’s specifications.