Gas turbine including sealing band and anti-rotation device

A turbine comprising:

• a plurality of stages, each stage comprising a rotatable disk and blades carried thereby, at least one pair of adjacent rotatable disks defining an annular gap therebetween and having respective opposing sealing band receiving slots aligned with the gap;
• a sealing band located in said opposing sealing band receiving slots to seal said annular gap, said sealing band comprising axially spaced-apart first and second edges;
• disk engagement structure defined in said pair of adjacent rotatable disks;
• a clip member coupled to said sealing band and in engagement with said pair of adjacent rotatable disks through said disk engagement structure, said clip member comprising a U-shaped member having first and second legs and a center portion, said clip member restricting movement of said sealing band;
• and
• welded joints affixing said legs of said U-shaped member to said sealing band,
• wherein prior to said welded joints being formed, said first edge of said sealing band comprises a first chamfer and a first angle greater than about 50 degrees is defined by said first chamfer and an angled first surface of said first leg of said U-shaped member.

A process for coupling a clip member to a sealing band located in opposing sealing band receiving slots of a pair of adjacent rotatable disks of a turbine, the clip comprising a U-shaped member having first and second legs and a center portion provided with an aperture extending only part way through the clip member, the sealing band comprising a hole located between axially spaced-apart first and second edges of the sealing band, the process comprising:

• aligning the aperture in the U-shaped member center portion with the hole in the sealing band;
• passing a tool through the sealing band hole;
• threadedly engaging the tool with the U-shaped member aperture so as to retain said clip member in engagement with said sealing band;
• and
• forming welded joints between the U-shaped member legs and the band.