To provide a a turbine stage 1 shroud configuration and a method for improving maintainability.
A stator shroud segment is provided that includes an outer shroud 116 having a leading edge groove 126 and a trailing edge groove 128, both grooves of the outer shroud opening in a first, axial direction; and a plurality of inner shrouds 118 each having a leading edge hook 110 and a trailing edge hook 112. The hook of the inner shroud projects in a second, axial direction, opposite the first axial direction, and leading and trailing hooks of each of the inner shrouds are respectively engaged with the leading and trailing edge grooves of the outer shroud so as to axially and radially lock the inner shroud to the outer shroud. This assembly simplifies access to the inner shroud and simplifies the removal of the inner shroud without increasing complexity.
Hirokazu Ogura
Nobukazu Ito
Toshihisa Kurokawa