GENERATOR SEAL OIL SYSTEM Flownex （发电机密封油系统Flownex）.pdfVIP

GENERATOR – SEAL OIL SYSTEM Eskom power utility utilized Flownex SE simulation capabilities to mitigate system shutdowns caused by Generator Hydrogen (H2) Seal ring failures. Engineers modelled the Hydrogen seal systems and used the simulated results to identify the case of their system trips. Flownex allowed the engineers to form an improved understanding of their systems and identifying the main contributing factor to these failures, thus preventing numerous future outages due to seal oil repairs, which in turn led to a financial benefit to Eskom. POWER GENERATION POWER GENERATION CHALLENGE: The challenge was to perform a root cause analysis of system trips caused by generator seal ring failures, a Flownex model was used to:  Identify the relationship between system pressure and seal clearances.  Plot system pressure at various shaft speeds thus explaining why this failure was picked up at higher rotor speeds.  Propose monitoring requirements (be it flow, system pressure, etc.) to anticipate seal failure. BENEFITS: The benefits in using Flownex for this situation were as follows:  Flownex SE quickly determined the root cause of system inefficiencies and unexpected responses (low seal oil pressure).  The model could be used in future to determine system operation when changing certain parameters.  Flownex allowed engineers and operators to make calculated decisions during operation to ensu