SEALING ASSEMBLIES Russian patent published in 2014 - IPC F16J15/34 

FIELD: machine building.

SUBSTANCE: invention relates to seals. A sealing unit comprises the first sealing ring with a seal connected to the first of the components without rotation and with limited ability of travelling by the axis, the second sealing ring is connected to the first sealing ring coaxially. The said second sealing ring with a seal is connected to the second of the components without rotation and with limited ability of travelling by the axis, the first resilient elements are connected to the second sealing ring pushing the latter along the axis towards the first sealing ring, the second resilient elements affect the first sealing ring pushing it away from the second sealing ring thus separating the first and the second sealing rings. A centrifugal drive is connected to the first sealing ring and is fitted by a chamber set radially between the first sealing ring and the component coupled to it. The chamber is connected to a fluid source, as a result when components rotate in respect to each other the increase of fluid's centrifugal pressure in the chamber will affect the first sealing ring by axial load pushing the ring along the axis to the second resilient elements, and the sealing side of the first sealing ring will couple with the sealing side of the second sealing ring.

EFFECT: improved seal.

11 cl, 7 dwg