Abstract: This paper analyzes the reasons for the high bearing temperature during the operation of the circulating pump in a petrochemical plant. It investigates the factors that may cause the fault one by one and determined that the fault was due to the thermal imbalance during the operation of the circulating pump. Under the premise of unchanged operating conditions and pump structure, the bearing box was improved to completely eliminate the operation fault of the circulating pump and ensure the stability and the optimal operation of the device.

Key words: circulating water pump, high bearing temperature, reason analysis, treatment measures