| 摘要 |
PURPOSE:To eliminate a clearance between the end face of a nozzle blade and a casing by providing a disc-shaped pedestal and a swiveling axis on the end face of the nozzle blade and fitting the pedestal in a casing so as to swivel freely. CONSTITUTION:A disc-shaped pedestal 23 and a swiveling axis 22 concentric to the pedestal are provided on the end face of a nozle blade 21. The pedestal 23 is installed through fitting it in a casing and the face of the pedestal 23 facing the flow passage side is put in coincidence with the face of the casing. Thus, any clearance between the end face of the nozzle blade 21 and the casing is eliminated, and clearance loss can be reduced. |
