Turbine shroud assembly

A turbine shroud assembly comprising:

• an outer shroud arranged within a turbine and further comprising opposed extending portions;
• an inner shroud shielding the outer shroud from a gas flowing along a gas path within the turbine during operation of the turbine and comprising opposed first and second arcuate portions extending around and in direct contact with a corresponding extending portion of the outer shroud for supporting the inner shroud from the outer shroud;
• and
• a spline seal having a length extending between the first and second arcuate portions, a thickness extending between the inner shroud and the outer shroud, and a width extending between opposed edges of the spline seal perpendicular to the length and the width of the spline seal, the spline seal being positioned between the inner shroud and the outer shroud,
• wherein:
• the outer shroud comprises a first outer shroud segment and a second outer shroud segment having respective first and second outer shroud segment surfaces facing each other and separated by an outer shroud gap;
• the inner shroud comprises a first inner shroud segment and a second inner shroud segment having respective first and second inner shroud segment surfaces facing each other and separated by an inner shroud gap;
• the first inner shroud segment includes a first recess portion at the first inner shroud segment surface;
• the second inner shroud segment includes a second recess portion at the second inner shroud segment surface;
• the first recess portion and the second recess portion form a recess for receiving the width of the spline seal;
• the width of the spline seal spans the outer shroud gap and the inner shroud gap, the opposed edges of the spline seal facing corresponding surfaces of the recess;
• at least one of the first outer shroud segment near the first outer shroud segment surface and the spline seal includes at least one first protrusion disposed between the opposed edges of the spline seal and extending from the spline seal toward the first outer shroud segment or from the first outer shroud segment toward the spline seal;
• at least one of the second outer shroud segment near the second outer shroud segment surface and the spline seal includes at least one second protrusion disposed between the opposed edges of the spline seal and extending fromthe spline seal toward the second outer shroud segment of from the second outer shroud segment toward the spline seal;
• and
• the at least one first protrusion and the at least one second protrusion maintain positive retention of the spline seal during non-operation of the turbine.