Patent ID: 7850425

Claim:
An outer sidewall retention scheme for a first stage singlet nozzle of a gas turbine, the retention scheme comprising: a circumferential retaining ring, the retaining ring including a main body and a pair of circumferential retaining lands projecting inward radially from the main body of the retaining ring, the pair of circumferential retaining lands being separated from each other by a predetermined distance; a circumferential annular retaining groove between the pair of circumferential retaining lands with the groove having a width of the predetermined distance between the pair of circumferential lands; a first stage nozzle including an inner sidewall and an outer sidewall on each nozzle; a first lug and a second lug mounted on an outer face of the outer sidewall of each nozzle and adapted to fit within the circumferential annular retaining groove of the retaining ring; a first retaining pin for attaching the first lug within the circumferential annular retaining groove to the pair of circumferential retaining lands and a second retaining pin for attaching the second lug within the circumferential annular retaining groove to the circumferential retaining lands; a chordal hinge rail and chordal hinge seal on the outer sidewall for each nozzle; and a chordal hinge rail and chordal hinge seal on the inner sidewall for each nozzle.