Abstract: Real-time monitoring of equipment operating status is an important way to ensure the safe operation of equipment in petrochemical enterprises and improve production management. Based on the operation data of the dry gas seals of 4 compressors in the reformers, an online monitoring system for the health status of dry gas seals was established. Through real-time monitoring and analysis of 28 parameters (pressure, flowrate, temperature, vibration, liquid level and rotation speed), the operation fault alarm, failure cause analysis, health condition assessment, remaining service life prediction and predictive maintenance guidance for dry gas seals were realized preliminarily.

Key words: dry gas seal, on-line monitoring, fault alarm, health assessment, signal analysis