Title :
Locking mechanism for in-vessel components of tokamak reactor
Author :
Nishio, S. ; Shimizu, K. ; Koizumi, K. ; Tada, E. ; Sato, S. ; Kudo, T. ; Yamazaki, S. ; Sato, K.
Author_Institution :
Naka Fusion Res. Establ., JAERI, Ibaraki, Japan
fDate :
30 Sep-3 Oct 1991
Abstract :
The movable cotter driven by hydraulic pressure has been proposed for the blanket locking system as a reference approach and it has been demonstrated that the flexible tube formed by superplasticity is sufficiently applicable to the driving mechanism for locking and unlocking the blanket modules. It was found that the superplastic material (Ti-Al alloy) is appropriate for this thin tube fabrication. A forming procedure has been established for the multilayered flexible tubes for providing high reliability, greater than that of the single-layered flexible tubes. The design optimization to minimize the tube space under certain operating conditions has been established based on stress analysis with large deformation
Keywords :
Tokamak devices; fusion reactor theory and design; blanket locking system; flexible tube; forming procedure; hydraulic pressure; movable cotter; stress analysis; superplastic material; superplasticity; thin tube fabrication; Fasteners; Fusion reactor design; Inductors; Pistons; Research and development; Shape; Space heating; Space technology; Tokamaks; Welding;
Conference_Titel :
Fusion Engineering, 1991. Proceedings., 14th IEEE/NPSS Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0132-3
DOI :
10.1109/FUSION.1991.218852
