FIELD: machine engineering.
SUBSTANCE: gas turbine contains a ventilation system designed to cool the interior of the turbine casing, as well as a lubricating oil supply circuit. The lubricating oil supply circuit includes a lubricating oil pump, a lubricating oil tank, a primary lubricating oil cooler. The turbine casing houses a secondary lubricating oil cooler located in a position below the rotating shaft of the gas turbine. The ventilation system is disposed and configured to provide at least a portion of the airflow for cooling the turbine casing to the secondary lube oil cooler for removing heat from the lubricating oil circulating in mentioned cooler.
EFFECT: increase of reliability by preventing oil filling of the machine in case of turbine shutdown and interruption in the operation of the oil suction pump.
17 cl, 5 dwg
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