Seal assembly between a transition duct and the first row vane assembly for use in turbine engines

A seal assembly between a transition seal structure associated with a downstream end of a transition duct and a vane seal structure associated with an upstream end of a vane structure in a first row vane assembly of a gas turbine engine, the seal member comprising:

• an outer seal structure comprising inner and outer seal members, each seal member having a radially extending first leg and an axially extending second leg that extends transversely from a junction with the first leg to provide each seal member with an L or V-shape;
• wherein:
• the inner and outer seal members are arranged in a nested relationship with one of the seal members being positioned between the first and second legs of the other seal member such that the respective junctions of the inner and outer seal members are adjacent to one another;
• and
• at least one of the first and second legs of both of the inner and outer seal members is received in a corresponding slot defined at least in part by one of the transition seal structure and the vane seal structure;
• and
• an inner seal structure comprising inner and outer seal members, each seal member of the inner seal structure having a radially extending first leg and an axially extending second leg that extends transversely from a junction with the first leg to provide each seal member with an L or V-shape;
• wherein:
• the inner and outer seal members of the inner seal structure are arranged in a nested relationship with one of the seal members being positioned between the first and second legs of the other seal member such that the respective junctions of the inner and outer seal members are adjacent to one another;
• and
• at least one of the first and second legs of both of the inner and outer seal members of the inner seal structure is received in a corresponding slot defined at least in part by one of the transition seal structure and the vane seal structure;
• and
• wherein the inner and outer seal members of the respective inner and outer seal structures comprise anti-rotation slots, the anti-rotation slots are formed in the at least one of the first and second legs of both of the inner and outer seal members of the respective inner and outer seal structures and are circumferentially aligned with one another,
• wherein the first legs of both of the inner and outer seal members of the outer seal structure are received in a first slot of the outer seal structure,
• wherein the first slot of the outer seal structure is defined by an annular flange of the transition seal structure,
• wherein the first slot of the outer seal structure comprises a plurality of circumferentially spaced apart transition seal retainers that are affixed to the annular flange, and
• wherein at least a portion of the first legs of both of the inner and the outer seal members of the outer seal structure are arranged between the annular flange and the plurality of circumferentially spaced apart transition seal retainers.