Assembly type nozzle diaphragm, and method of assembling the same

摘要

A nozzle diaphragm assembly includes a diaphragm outer ring having a groove opened toward an inner diameter side to be continuous in an inner peripheral direction; a diaphragm inner ring having a groove opened toward an outer diameter side to be continuous in an outer peripheral direction; and a nozzle blade having a diaphragm outer ring insertion portion on one end and a diaphragm inner ring insertion portion on the other end, in which the groove opened toward the inner diameter side of the diaphragm outer ring and the diaphragm outer ring insertion portion are shaped to be fitted to each other, and in which the groove opened toward the outer diameter side of the diaphragm inner ring and the diaphragm inner ring insertion portion are shaped to be fitted to each other.