Oil-gas separation device with impeller

Abstract

The invention discloses an oil-gas separation device with an impeller. The oil-gas separation device comprises a central disc, the impeller, a filter screen structure, an oil collecting ring and two cover plates, wherein the two cover plates and the oil collecting ring form a cylindrical structure with holes formed in the centers of the two bottom surfaces, and the cylindrical structure is fixedly connected to the central disc in a sleeving mode; one end of the impeller communicates with the interior of the cylinder formed by the cover plates and the oil collecting ring, and the other end of the impeller is sealed; and the filter screen structure comprises an annular central mounting part and filter screens fixedly connected to the two sides of the central mounting part, the central mounting part is fixedly connected to the edge of the disc in a sleeving mode, and the sides, away from the central mounting part, of the filter screens are connected with the inner walls of the cover plates in a sealed mode. According to the oil-gas separation device, oil and gas are pressurized and accelerated through the impeller, and flowing resistance can be counteracted; an oil-gas mixture can be filtered twice, so that the oil-gas separation effect is improved; and an airflow channel is provided with a supporting plate, so that airflow rotation can be enhanced, and the centrifugal separation effect is improved.

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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