TRIPLE CIRCUIT LUBRICATION DEVICE WITH INCREASED RELIABILITY FOR A MAIN POWER TRANSMISSION GEARBOX OF AN AIRCRAFT
First Claim
1. A triple circuit lubrication device for lubricating a mechanical system, the lubrication device being provided with a tank and two lubrication circuits, the tank containing a lubrication liquid, a first lubrication circuit comprising a first pump, first pipes, a first pressure sensor, a first heat exchanger, first spray nozzles, and a first suction point for sucking up the lubrication liquid, a second lubrication circuit comprising a second pump, second pipes, a second pressure sensor, a second heat exchanger, second spray nozzles, and a second suction point for sucking up the lubrication liquid, the first and second suction points being situated in the tank, each pump acting via the first and second suction points to deliver the lubrication liquid into the first and second pipes respectively, and then into the first and second spray nozzles in order to lubricate the mechanical system, wherein the triple circuit lubrication device includes a tertiary circuit in which a tertiary liquid flows, the tertiary liquid comprising a third pump, third pipes, a third pressure sensor, the second heat exchanger, and a third heat exchanger, the third pump serving to cause the tertiary liquid to flow through the second heat exchanger and through the third heat exchanger, the second suction point being situated below the first suction point.
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Accused Products
Abstract
A triple circuit lubrication device for lubricating a mechanical system, the lubrication device being provided with two independent lubrication circuits, a tank common to both lubrication circuits and containing a lubrication liquid, and a tertiary circuit in which a tertiary liquid flows. Each lubrication circuit comprises pipes, and respective pressure sensors, pumps, heat exchangers, spray nozzles, and suction points for sucking up the lubrication liquid situated in the tank. The second suction point is situated below the high first suction point. The tertiary circuit comprises a third pump, a third pressure sensor, the second heat exchanger, and a third heat exchanger, thus serving to cool the lubrication liquid flowing through the second lubrication circuit.
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Citations
11 Claims
- 1. A triple circuit lubrication device for lubricating a mechanical system, the lubrication device being provided with a tank and two lubrication circuits, the tank containing a lubrication liquid, a first lubrication circuit comprising a first pump, first pipes, a first pressure sensor, a first heat exchanger, first spray nozzles, and a first suction point for sucking up the lubrication liquid, a second lubrication circuit comprising a second pump, second pipes, a second pressure sensor, a second heat exchanger, second spray nozzles, and a second suction point for sucking up the lubrication liquid, the first and second suction points being situated in the tank, each pump acting via the first and second suction points to deliver the lubrication liquid into the first and second pipes respectively, and then into the first and second spray nozzles in order to lubricate the mechanical system, wherein the triple circuit lubrication device includes a tertiary circuit in which a tertiary liquid flows, the tertiary liquid comprising a third pump, third pipes, a third pressure sensor, the second heat exchanger, and a third heat exchanger, the third pump serving to cause the tertiary liquid to flow through the second heat exchanger and through the third heat exchanger, the second suction point being situated below the first suction point.
Specification