Centrifugal compressor
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What are the hazards of excessively high or low lubricating oil temperature in centrifugal compressors?
If the oil temperature is too low, its viscosity becomes too high, which hinders the flow of lubricant and leads to unstable operation of the equipment. If the oil temperature is too high, its viscosity becomes too low, resulting in suboptimal lubrication effects and accelerated oil aging
When the oil temperature is too high, the oil pressure drops, the viscosity decreases, the bearing temperature rises, and in severe cases, bearing burnout can occur, leading to shaft failure or even breakage of the shaft. If the oil temperature is too low, the oil pressure rises; the oil pump may experience vacuum conditions or fail to function properly, or the flow rate of oil may be inadequate. A large pressure difference across the lubricating oil filter can trigger a chain reaction, causing the auxiliary oil pump to start operating automatically or to stop as part of the shutdown sequence. This can also lead to a disruption in the supply of lubricating oil to the bearing areas, resulting in low oil pressure. In severe cases, this can cause damage to the bearings, leading to shaft failure.