Apparatus and method for sealing turbine assembly

A turbine system comprising:

• a compressor section;
• a combustion section;
• a turbine section;
• a diffuser including:
• a first diffuser component, a second diffuser component and a parting line separating the first diffuser component and the second diffuser component, and
• a third diffuser component and a fourth diffuser component separated by the parting line, wherein the third diffuser component has an end adjacent an end of the first diffuser component and the fourth diffuser component has an end adjacent an end of the second diffuser component;
• and
• a first seal along the parting line and between the first and second diffuser components, wherein the first seal includes:
• a first recessed portion extending from the first diffuser component,
• a first protruding portion extending from the second diffuser component and inserted into the first recessed portion,
• a first flexible portion disposed between the first protruding portion and the first recessed portion, wherein the first flexible portion has a bent cross-sectional shape when viewed perpendicular to the parting line,
• an outer surface of the first flexible portion contacting an inner surface of the first recessed portion, and
• an inner surface of the first flexible portion contacting an outer surface of the first protruding portion, and
• a second seal along the parting line and between the third and fourth diffuser components, wherein the second seal includes:
• a second recessed portion extending from the third diffuser component;
• a second protruding portion extending from the fourth diffuser component and inserted into the second recessed portion;
• a second flexible portion disposed between the second protruding portion and the second recessed portion, wherein the second flexible portion has a bent cross-sectional shape when viewed perpendicular to the parting line,
• an outer surface of the second flexible portion contacting an inner surface of the second recessed portion, and
• an inner surface of the second flexible portion contacting an outer surface of the second protruding portion, and
• wherein the first recessed portion and the first protruding portion of the first seal are spaced apart from the second recessed portion and the second protruding portion of the second seal by an axial space spanning between the first and third diffuser components;
• wherein the first flexible portion extends beyond the first recessed portion and the first protruding portion into the axial space and terminates at a first end of the first seal, and
• wherein the second flexible portion extends beyond the second recessed portion and the second protruding portion, into the axial space and terminates at a second end of the second seal adjacent the first end of the first seal.