APPARATUS AND METHOD FOR REDUCING OIL MIST INGESTION IN A HEAVY DUTY GAS TURBINE ENGINE

摘要

A lubrication system for a heavy duty gas turbine includes a bearing lubrication assembly coupled to the bearing and an oil and vapor extraction assembly disposed in a cavity defined by a bell mouth hood in an air inlet duct. A high volume vacuum blower is coupled to the oil and vapor extraction assembly to provide a relative negative pressure. An oil and vapor separator is disposed downstream from the high volume vacuum blower. The lubrication system also includes a control subsystem that maintains a cavity pressure lower than an air inlet pressure.

主权项

1. A lubrication system for a heavy duty gas turbine having an air inlet duct, an air inlet assembly disposed in the air inlet duct, the air inlet assembly having a bell mouth hood defining a cavity, and a bearing disposed in the cavity, the lubrication system comprising:
a bearing lubrication assembly coupled to the bearing; an oil and vapor extraction assembly disposed in the cavity; a negative pressure assembly coupled to the oil and vapor extraction assembly; an oil and vapor separator disposed downstream from the negative pressure assembly; and a control subsystem that maintains a cavity pressure lower than an air inlet pressure.