A kind of oil-gas separation device with impeller

Abstract

The invention discloses an oil-gas separation device with an impeller, which comprises a central disc, an impeller, a filter screen structure, an oil collecting ring and two cover plates; the two cover plates and the oil collecting ring form two central holes on the bottom surface The cylindrical structure is fixedly sleeved on the central disc; one end of the impeller is connected to the cylindrical interior formed by the cover plate and the oil collection ring, and the other end of the impeller is sealed; the filter mesh structure includes a circular The central installation part and the filter screen fixedly connected on both sides of the central installation part, the central installation part is fixedly sleeved on the edge of the disc part, and the side of the filter screen away from the central installation part is sealed and connected with the inner wall of the cover plate; the present invention The oil and gas are pressurized and accelerated by the impeller, which can offset the flow resistance; the oil and gas mixture can be filtered twice to improve the oil and gas separation effect; the air flow channel is arranged with a support plate, which can enhance the air flow rotation and improve the centrifugal separation effect.

Description

technical field [0001] The invention belongs to the field of gas turbine engines, and in particular relates to an oil-gas separation device with an impeller. Background technique [0002] In order to prevent the lubricating oil in the bearing cavity from leaking, the aero-engine needs to keep the pressure inside the bearing cavity lower than the pressure outside the bearing cavity. In the low-pressure state in the bearing chamber, the excess oil and gas in the bearing chamber needs to be degreased through the oil-gas separation device and then discharged to the outside. The typical method is to discharge the separated gas to the tail nozzle, and through the ejection of the tail nozzle Enhance gas discharge speed and maintain proper chamber pressure. [0003] The traditional aero-engine oil-gas separation device generally adopts the centrifugal separation method, which uses the different density and centrifugal force of the oil and gas in the oil and gas to throw the oil out...

AI Technical Summary

Problems solved by technology

Because the gas needs to overcome the centrifugal force, the flow resistance is relatively large, which will cause the pressure in the bearing chamber to increase. If the bearing chamber adopts the gravity oil return of the lubricating oil, the increase in the bearing chamber pressure will reduce the oil return ability of the lubricating oil, resulting in poor oil return and the generation of lubricating oil. Coking, leakage and other problems

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