초록 ▼

A lubrication system for lubricating gas turbine engine components and accessory components separately comprises first and second lubricant circulating circuits for separately feeding lubricant to the engine components and the accessory components. The system further includes a supply tank with firs

A lubrication system for lubricating gas turbine engine components and accessory components separately comprises first and second lubricant circulating circuits for separately feeding lubricant to the engine components and the accessory components. The system further includes a supply tank with first and second separate chambers respectively connected in fluid flow communication with the first and second lubricant circulating circuits. A filler port is defined in the tank for allowing the first chamber to be filled with lubricant. A filling and level maintaining circuit is connected to the first lubricant circulating circuit for directing a portion of the lubricant fluid pumped from the first chamber into the second chamber, thereby obviating the need for a second filler port.

대표청구항 ▼

1. A lubrication system for lubricating gas turbine engine components and accessory components separately, comprising first and second lubricant circulating circuits for separately feeding lubricant to the engine components and the accessory components, a supply tank with first and second separate c

1. A lubrication system for lubricating gas turbine engine components and accessory components separately, comprising first and second lubricant circulating circuits for separately feeding lubricant to the engine components and the accessory components, a supply tank with first and second separate chambers respectively connected in fluid flow communication with said first and second lubricant circulating circuits, a filler port for allowing said first chamber to be filled with lubricant, and a filling and level maintaining circuit connected to said first lubricant circulating circuit for directing a portion of the lubricant fluid pumped from said first chamber into said second chamber, thereby allowing said second chamber to be initially filled and the level of lubricant contained therein subsequently maintained at a predetermined level. 2. A lubrication system as defined in claim 1, further including a pump for pumping lubricant from said first chamber to the engine components and to said second chamber, and wherein the filling and level maintaining circuit discharges the lubricant pumped from the first chamber into a scupper connected in fluid flow communication with the second chamber, the level of lubricant in the second chamber being a function of the level of lubricant in said scupper and of the position of the scupper relative to the second chamber. 3. A lubrication system as defined in claim 2, wherein excess flow from the filling and level maintaining circuit is fed to the engine components as the lubricant fluid spills over the scupper. 4. A lubrication system as defined in claim 2, wherein said scupper defines an orifice leading to said second chamber, and wherein a one-way valve is provided to prevent the lubricant contained in said second chamber from flowing into said scupper through said orifice. 5. A lubrication system as defined in claim 2, wherein said filling and level maintaining circuit includes a nozzle adapted to discharge a continuous flow of lubricant into said scupper. 6. A lubrication system as defined in claim 1, wherein said first and second chambers have a common vent. 7. A lubrication system as defined in claim 1, wherein said supply tank has a single lubricant level indicator for monitoring the level of lubricant in said first chamber, the level of lubricant in the second chamber being maintained substantially constant by the flow of lubricant passing through said filling and level maintaining circuit. 8. A lubrication system as defined in claim 2, wherein the lubricant withdrawn from the first chamber is passed through a filter before being directed into said second chamber. 9. A lubrication system for separately supplying lubricant to first and second set of components, comprising first and second lubricant circulating circuits for separately feeding lubricant to the first and second sets of components, said first and second lubricant circulating circuit being fed by a common supply tank having first and second separate chambers respectively connected in fluid flow communication with said first and second lubricant circulating circuits, a filler port defined in said supply tank for allowing said first chamber to be filled with lubricant, a pump for withdrawing lubricant from said first chamber, wherein a first portion of the lubricant pumped from said first chamber is directed to the first set of components via said first lubricant circulating circuit before being returned back to said first chamber, whereas a second portion of the lubricant fluid pumped from the first chamber is directed into said second chamber through a filling and level maintaining circuit connected to receive a flow of lubricant from said first chamber to initially permit filling of said second chamber and to subsequently maintain a predetermined volume of lubricant in said second chamber. 10. A lubrication system as defined in claim 9, wherein said filling and level maintaining circuit includes a scupper connected in fl uid flow communication with said second chamber, said scupper forming a receptacle for receiving a continuous flow of lubricant from said first chamber, said scupper being in spill-over transfer relationship with the first set of components for allowing excess lubricant fed to said scupper to be re-circulated through said first lubricant circulating circuit. 11. A lubrication system as defined in claim 10, wherein said scupper defines a hole leading to said second chamber for allowing lubricant to flow from the scupper into the second chamber in order to automatically compensate for lubricant losses in the second lubricant circulating circuit. 12. A lubrication system as defined in claim 9, wherein said filling and level maintaining circuit includes a scupper forming a reservoir for automatically supplying lubricant to said second chamber in order to compensate for the lubricant consumption of the second set of components, while allowing excess lubricant flowing into said scupper to be redirected back into said first lubricant circulating circuit. 13. A lubrication system as defined in claim 12, wherein the scupper sets the level of lubricant in the second chamber. 14. A lubrication system as defined in claim 12, wherein said filling and level maintaining circuit includes a nozzle discharging a continuous flow of lubricant into said reservoir. 15. A lubrication system as defined in claim 9, wherein said first and second chambers have a common vent. 16. A lubrication system as defined in claim 9, wherein said supply tank has a single lubricant level indicator for monitoring the level of lubricant in said first chamber, the level of lubricant in the second chamber being maintained substantially constant by the flow of lubricant passing through said filling and level maintaining circuit. 17. A dual supply tank for independently supplying lubricant to a gas turbine engine lubricating circuit and an accessory lubricating circuit, comprising first and second separate chambers adapted to separately feed the gas turbine engine lubricating circuit and the accessory lubricating circuit, a single filler port for filling said first chamber, a nozzle for directing a flow of lubricant from said first chamber to a scupper, said scupper being connected in flow communication with said second chamber for allowing filling of said second chamber up to a predetermined level and thereafter redirect the excess lubricant flowing out of the nozzle away from said second chamber. 18. A tank as defined in claim 17, wherein said scupper forms a receptacle defining an orifice for allowing lubricant to flow from said scupper into said second chamber, wherein said receptacle is open for allowing excess lubricant supply to said scupper to spill-over from said receptacle. 19. A tank as defined in claim 17, wherein the scupper forms a reservoir for receiving a continuous flow of lubricant from said nozzle, said reservoir being configured for allowing spill-over of excess lubricant. 20. A tank as defined in claim 17, wherein said first and second chambers have a common vent.