GAS-TURBINE ENGINE OIL SYSTEM WITH CONTINUOUS REDUNDANCY DEVICE Russian patent published in 2005 - IPC

FIELD: mechanical engineering; gas-turbine engines of helicopters.

SUBSTANCE: invention is aimed at creating recirculation oil systems in which reservoir oil is repeatedly used for lubrication and cooling of supports, and overfilling of supports in case of failure of main oil system is prevented. According to invention, oil system of gas-turbine engine with continuous redundancy device contains space of at least one support rotor accommodating main and additional nozzles, main and additional oil tanks breathers, shutoff valve with control and operating spaces and delivery and pump-out main lines. Main oil tank communicates with delivery main line with main nozzles, control space of shutoff valve and additional oil tank with bottom part and communicating with additional nozzles. Oil system includes reducer space. Space of one support is combined with space of reducer to form common space having bottom and central parts. Additional nozzles and additional oil tank are located in central part of common space. Additional oil tank communicates with main oil tank through jet. Shutoff valve is located in bottom part of additional oil tank and its operating space can communicate with additional oil tank and with central part of common space. System has second similar shutoff valve installed in common space under additional oil tank. Valve control space is connected with main oil tank delivery main line, and operating space is connected with bottom part of common space and pump-out main line, and it can communicate with central part of common space. Circulator with oil receiver is installed in common space to communicates its bottom part with additional nozzles. To lubricate second support in proposed oil system, space of second support communicates with common space by breathing main line, and additional nozzles arranged in said space communicate with bottom part of common space through ejector.

EFFECT: increased service line and improved reliability of oil system.

2 cl, 1 dwg