Condensation separation-based oil-gas separation device for oil smoke exhaust pipeline of unit oil tank

The invention relates to the related technical field of oil-gas separation, and discloses an oil-gas separation device for a unit oil tank oil smoke exhaust pipeline based on condensation separation. The multiple oil-gas separation layers and the air cooling driving layer are driven to rotate integrally through the fan blade structure, so that a centrifugal turbine in the air cooling driving layer drives air in the center cylinder to flow, cold air enters from an air inlet channel in the center of the fan blade to cool the fan blade, and then hot air is extracted from the hot air exhaust cylinder. Oil gas can be cooled by the low-temperature fan blades when rising, oil liquid is condensed and attached to the fan blades, then is thrown to the inner wall of the sealing cylinder along with the centrifugal force of rotation of the fan blades and then is gathered in the oil liquid collecting bin, so that the oil gas cooling separation and oil liquid centrifugal collecting functions are achieved only through gas po