Method and system for lubricating a turbine engine

Details Method and system for lubricating a turbine engine Method and system for lubricating a turbine engine

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 25/12 (2006.01) F01D 25/16 (2006.01) F01D 25/18 (2006.01) F02C 7/06 (2006.01)

Patent

CA 2738093

The invention relates to a method and a system for lubricating a turbine engine comprising at least three separate housings (10, 10, 12) each containing at least one roller bearing (P1, P'1, Q1). The method comprises pressurising the housings through seals (14), two so-called main housings (10, 10) being pressurised at a pressure higher than that of the remaining so-called secondary housing (12), lubricating the secondary roller bearing only by injecting an oil mist from at least one of the main housings, said oil mist being supplied by the pressure difference between the main housings and the secondary housing, recovering the remainder of the lubrication oil injected into the main housings in order to supply the same to an oil tank (18), and supplying the air/oil mixture from the secondary housing to an oil separator (38).

L'invention concerne un procédé et un système de lubrification d'une turbomachine comportant au moins trois enceintes (10, 10', 12) distinctes renfermant chacune au moins un palier à roulement (P1, P'1, Q1). Le procédé consiste à pressuriser les (14), deux des enceintes dites enceintes principales (10, 10') étant pressurisées à une pression supérieure à l'enceinte restante dite enceinte secondaire (12), lubrifier le palier à roulement des enceintes principales, lubrifier le palier à roulement de l'enceinte secondaire uniquement par injection d'un brouillard d'huile provenant de l'une au moins des enceintes principales, ledit brouillard d'huile étant acheminé par différence de pressions entre les enceintes principales et l'enceinte secondaire, récupérer le restant de l'huile de lubrification injectée dans les enceintes principales pour l'acheminer vers un réservoir d'huile (18), et acheminer le mélange air/huile provenant de l'enceinte secondaire vers un déshuileur (38).

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