Fluid transfer device
First Claim
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1. A fluid transfer device for transferring fluid between a first and a second fluid system, said device comprising:
- a pair of fluid flow paths, each of said flow paths being in flow communication with the first and second fluid systems, the first fluid system being the main engine oil system of a gas turbine engine and the second fluid system being the auxiliary oil system of the gas turbine engine;
accumulator means connected to one of said pair of flow paths for accumulating and storing fluid from the main engine oil system and for discharging the stored fluid into the auxiliary oil system; and
at least one selectively movable valve means disposed along each flow path for controlling fluid flow between the first and second fluid systems, one of said movable valve means being selectively movable between a first position, to permit fluid to flow into said accumulator means, and a second position, to permit discharge of fluid from said accumulator means and into said second fluid system.
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Abstract
The present invention provides a device for transferring replacement fluid from a first to a second fluid system and for transferring overflow fluid from the second fluid system to the first fluid system. Replacement and overflow fluid is transferred between systems by first and second flow paths respectively, each flow path including a filter to prevent particle contamination between the systems.
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Citations
18 Claims
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1. A fluid transfer device for transferring fluid between a first and a second fluid system, said device comprising:
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a pair of fluid flow paths, each of said flow paths being in flow communication with the first and second fluid systems, the first fluid system being the main engine oil system of a gas turbine engine and the second fluid system being the auxiliary oil system of the gas turbine engine; accumulator means connected to one of said pair of flow paths for accumulating and storing fluid from the main engine oil system and for discharging the stored fluid into the auxiliary oil system; and at least one selectively movable valve means disposed along each flow path for controlling fluid flow between the first and second fluid systems, one of said movable valve means being selectively movable between a first position, to permit fluid to flow into said accumulator means, and a second position, to permit discharge of fluid from said accumulator means and into said second fluid system. - View Dependent Claims (9, 10, 11, 12, 13)
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2. An oil transfer device for use in a gas turbine engine for periodically transferring replacement oil from a main engine oil system to an auxiliary oil system and for transferring overflow oil from the auxiliary oil system to the main engine oil system, said device comprising:
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(a) a first flow path for transferring replacement oil, said first flow path including a first entry port and a first exit port in respective flow communication with the main engine and auxiliary oil systems; (b) a second flow path for transferring overflow oil, said second flow path including a second entry port and a second exit port in respective flow communication with the auxiliary and main engine oil systems; (c) at least one oil filter respectively positioned in each of said flow paths; (d) accumulator means in flow communication with said first flow path, said accumulator means comprising means for accumulating and storing replacement oil received from the main engine oil system and for discharging replacement oil into the auxiliary oil system via said first flow path; (e) first selectively movable valve means disposed in said first flow path, said first valve means comprising means for preventing fluid flow in the downstream direction of said accumulator means while said accumulator means is accumulating and storing replacement fluid and for preventing fluid backflow in the upstream direction of said accumulator means at all other times; and (f) second selectively movable valve means disposed in said second flow path, said second valve means comprising means for preventing oil flow from the auxiliary oil system into the main engine oil system while said accumulator means is accumulating and storing the replacement oil. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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14. An oil transfer device for use in a gas turbine engine for periodically transferring replacement oil from a main engine oil system to an auxiliary oil system and for transferring overflow oil from the auxiliary oil system to the main engine oil system, said device comprising:
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(a) a first flow path for transferring replacement oil from the main engine system to the auxiliary oil system; (b) a second flow path for transferring overflow oil from the auxiliary oil system to the main engine oil system; (c) accumulator means, connected to said first flow path, for accumulating and storing replacement oil received from the main engine oil system and for discharging replacement oil into the auxiliary oil system; (d) valve means disposed in said first flow path for controlling the transfer of replacement oil between the main engine oil system and the auxiliary oil system, said valve means being selectively movable between a first position, to permit fluid to flow into said accumulator means, and a second position, to permit discharge of fluid from said accumulator means and into the auxiliary oil system. - View Dependent Claims (15, 16, 17, 18)
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Specification