Bell seal of improved stability for high pressure turbines

Details Bell seal of improved stability for high pressure turbines Bell seal of improved stability for high pressure turbines

F - Mech Eng,Light,Heat,Weapons

16

J

277/27, 277/56,

F16J 15/00 (2006.01) F01D 9/06 (2006.01) F16J 15/06 (2006.01) F16J 15/08 (2006.01) F16J 15/48 (2006.01)

Patent

CA 1318925

19 ABSTRACT OF THE DISCLOSURE A bell seal assembly for the nozzle chamber unit of an elastic fluid turbine, such as the team turbine used to drive electrical utility generators. The bell seal assembly includes a bell seal unit and a retaining nut unit; the seal skirt depends from a mounting flange. The outer skirt surface is subdivided into an upper skirt surface, an intermediate portion and a lower skirt margin. The intermediate portion is the primary skirt seal region, and the layer skirt margin is tapered inwardly toward the skirt end surface. The lower skirt margin includes a plurality of spaced apart, circumferentially extending grooves, one of which terminates adjacent the lower edge of a sealing land on the primary seal portion of the skirt.

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