Patent ID: 7874790
Filing Date: 2011-01-25
Classification: F01D,F02C

Abstract:
1. A convex sealing bottom for a twin-shaft turbine comprising: a series of convex disks, constrained to each other by means of a series of pins, each disk of said series of disks comprises an outer shaped edge which is engaged with a corresponding annular surface of an inner grooved surface of a ring for obtaining an axial seal, wherein said series of disks comprise three disks, a first disk, a second disk and a third disk respectively, wherein said three disks are fixed to each other centrally by means of a series of spokes, the three disks being constrained in pairs respectively by means of said series of pins which are arranged orthogonally to said three disks to minimize the relative movements of said three disks in an axial direction at the same time allowing the radial dilatations of said three disks; wherein the series of pins comprise a first series of pins and a second series of pins with a round head, said first series of pins constrains said first disk to said third disk, whereas said second series of pins constrains said second disk to said third disk.