Watertigh fixing of a bearing support in a turbomachine

摘要

The turbomachine has a shaft (14) guided in an upstream bearing (26) carried by an annular support (50) fixed by a fusible fixation screw (32) to an intermediate casing (24) via an annular support (52) with a downstream shaft guiding bearing (28). The screw has upstream ends covered by a U-sectioned annular cover (54) sealably fixed on the support (52) or the casing. The cover is made of composite material or metallic material i.e. titanium, having an expansion coefficient same as that of the support (50) and the casing. The screw is radially arranged at the exterior of the support (50).