Gas turbine nozzle

A gas turbine nozzle comprising:

• nozzles formed integrally through an inner perimeter end wall and an outer perimeter end wall, wherein
• the inner perimeter end wall has an upstream connection portion and a downstream connection portion, the upstream connection portion extending radially inward to an inner perimeter diaphragm, the downstream connection portion being located downstream from the upstream connection portion and extending radially inward to the inner perimeter diaphragm, and
• the inner perimeter end wall has a thin-walled portion in a rear edge portion of the inner perimeter end wall, the thin-walled portion corresponding to a reduced wall thickness portion of the rear edge portion of the inner perimeter end wall,
• the gas turbine nozzle has a coupled vane structure in which two of the nozzles are formed integrally through the inner perimeter end wall and the outer perimeter end wall, and
• the thin-walled portion is formed in an area between the inner perimeter end wall and the downstream connection portion.

A gas turbine nozzle comprising:

• nozzles formed integrally through an inner perimeter end wall and an outer perimeter end wall, wherein
• the inner perimeter end wall has an upstream connection portion and a downstream connection portion, the upstream connection portion extending radially inward to an inner perimeter diaphragm, the downstream connection portion being located downstream from the upstream connection portion and extending radially inward to the inner perimeter diaphragm, and
• the inner perimeter end wall has a thin-walled portion in a rear edge portion of the inner perimeter end wall, the thin-walled portion corresponding to a reduced wall thickness portion of the rear edge portion of the inner perimeter end wall, wherein
• the gas turbine nozzle has a coupled vane structure in which two of the nozzles are formed integrally through the inner perimeter end wall and the outer perimeter end wall, and
• the thin-walled portion is formed in a central portion of the rear edge portion of the inner perimeter end wall in a circumferential direction.