TURBINE NOZZLE BOX

摘要

A turbine nozzle box (1) includes an annular outer ring plate (100), an annular nozzle unit (200), and an annular inner ring plate (300). The annular outer ring plate (100) is operable to be disposed in a turbine such that an outer peripheral surface thereof is adjacent to an inner peripheral surface of an inner casing (10) of the turbine. The annular nozzle unit (200) is disposed adjacent to an inner peripheral surface of the outer ring plate (100). The annular inner ring plate (300) is disposed such that an outer peripheral surface thereof is adjacent to an inner peripheral surface of the nozzle unit (200). The nozzle unit (200) includes a plurality of segment blocks (210) circumferentially installed at an arc angle. The segment blocks (210) are disposed at an inlet end (202) of a first-stage nozzle unit, and an outlet end (203) of the first-stage nozzle unit is open.