TURBINE FOR ORGANIC RANKINE CYCLES HAVING IMPROVED CENTERING BETWEEN CASING AND SHAFT TUBE MEMBER

摘要

A turbine (100) for expanding a working fluid in an organic Rankine cycle, comprising a casing (10), inside of which at least a statoric group is accommodated, a turbine shaft (15) contained inside a tube member (20) and carrying at least a rotoric group, contained within the casing (10), wherein said tube member (20) and said casing (10) are each other axially pushed and radially centered. The centering between the tube member (20) and the casing (10) is made by means of a plurality of centering tabs (40, 50") housed in corresponding centering bushings (50, 50'), in turn accommodated in corresponding seats (60, 60') formed in the casing (10) and in the tube member (20), wherein said tabs allow a relative displacement in the radial direction but not in the tangential direction of the tube member (20) with respect to the casing (10).