Shim seal assembly and assembly methods for stationary components of rotary machines

摘要

A seal assembly for a rotary machine is provided. The seal assembly includes a shim seal (14) including multiple seal plates forming a C-shaped shim seal (14) or a box shaped shim seal. The C-shaped shim seal (18) includes a first side portion (34) having a smaller width than that of an opposing second side portion (36), and the second side portion of the C-shaped shim seal (14) includes a gap between at least two straight faces with an inward angle for allowing positioning within the slot (18) between stator components (12, 13). The box shaped seal includes a plurality of cuts at two opposing sides or corners for allowing high pressure fluid to occupy the cavity of the box-shaped shim seal. The seal (18) may be inserted within one or more slots (18) between adjacent stator components (12, 13) of the rotary machine.