Improved lubrication system for hydraulic machinery sealing

Abstract

A hydraulic machine (1) comprising a first assembly (10) and a second assembly (20) rotatably movable relative to each other about a rotation axis (XX), the first assembly (10) and the second assembly (20) defining an internal volume (2) and being in contact along an interface, the interface between the first assembly (10) and the second assembly (20) comprising a sealing element (40) arranged in a housing (30) connected on the one hand to the internal volume (2) via a first duct and on the other hand to the ambient environment via a second duct (5), the first duct comprising a sealing element (6) adapted to isolate the housing (4) from the internal volume (2); characterized in that a second cavity (7) is formed in the first assembly (10) or the second assembly (20), the second cavity (7) being connected to the housing (4) and isolated from the internal volume (2).

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