OIL SYSTEM OF GAS TURBINE POWER PLANT Russian patent published in 2020 - IPC F02C7/06 

FIELD: machine building.

SUBSTANCE: invention relates to engine building, particularly, to oil system of power gas turbine plant (PGTP) used at gas pumping and electric stations for drive of various units (pumps, gas and air compressors, electric generators, and so forth). PGTP oil system includes two booster pumps with one of them driven by the turbo-compressor rotor, and the other one - with electric drive, which suction mains are connected in parallel to the oil tank, and pressure lines are interconnected through automatic shutoff device and are connected to oil cavities of support bearings of compressor rotors and free turbine, wherein in oil supply line to thrust bearing turbo compressor pressure sensor is installed. According to the invention, the automatic shut-off device is made in the form of a check valve installed between pressure lines of discharge pumps and spring-loaded towards the outlet of the discharge pump with electric drive, and the pressure sensor is connected to the latter.

EFFECT: such design of the device will make it possible to simplify the process of oil supply to the oil cavities of the turbo-compressor and the free system and thus to improve the operating reliability of the PGTP.

1 cl, 1 dwg