OIL SYSTEM OF POWER GAS TURBINE PLANT Russian patent published in 2013 - IPC F02C7/06 

FIELD: engines and pumps.

SUBSTANCE: oil system of power gas turbine plant includes devices for supply and removal of oil from oil cavities of bearing supports of the turbo-compressor, free turbine and drive unit, in which the oil supply device is made in the form of a system consisting of two delivery pumps, one of which is driven from the turbo-compressor rotor and the other one is driven from the electric drive. Suction lines of delivery pumps are connected parallel to the oil tank. Delivery pipelines of delivery pumps are interconnected with each other through a shutoff valve. In addition, the delivery pipeline of the delivery pump with the electric drive is taken out to the oil cavity of bearing supports of the drive unit. Besides, the oil pumping line of the drive unit is connected to a common oil tank of the plant.

EFFECT: proposed invention will allow improving operating reliability of the oil system at the start-up of the power gas turbine plant owing to reducing the time of oil starvation of the plant, which is caused with the necessity of oil filling of a large free inner space in oil pipelines and instrumentation and control system located on them and simplifying the design of the plant owing to avoiding the use of an independent oil tank and a delivery pump for the drive unit.

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