Contactless axial carbon seal for a bearing chamber

摘要

The present invention relates to a sealing device for a turbomachine bearing, comprising a rotary ring mounted on the portion of the sleeve located on the oil chamber side and a segmented carbon ring which is not in contact with the shaft or with the seal support. The segmented carbon ring bears axially against an annular support by springs. The radial face of the segmented carbon ring engages with the rotary ring via the radial face of the rotary ring by lift slots machined into the rotary ring so as to ensure dynamic sealing during operation, with no friction between the radial faces.