| 摘要 |
PURPOSE:To facilitate the process of replacing a nozzle plate, by fitting and holding the nozzle plate caught between inner and outer rings of a nozzle diaphragm, into the outlet of a nozzle box body. CONSTITUTION:A nozzle plate 15 is caughted between the inner ring 16 and the outer ring 17 of a nozzle diaphragm. Radially extending annular projections 16a, and 17a are formed on the inner ring 16 and outer ring 17 respectively. Annular grooves 18, and 19 are formed in a nozzle box body 10 the nozzle plate 15 is held by fitting the annular projections 16a and 17a into the annular grooves 18 and 19. Because way of attachment is just is just a process of fitting. the nozzle plate 15 can be easily replaced. |
