Interference fit process development for the ITER Vacuum Vessel Gravity Support mock-up fabrication

被引：0
|
作者：
Cheon, Jason [2 ]
Park, Chulkyu [1 ]
Moon, Hokyu [1 ]
Chung, Woo-Ho [1 ]
Kim, Hyun-Soo [1 ]
Hong, Kwen-Hee [1 ]
Kim, Gwang-Ho [1 ]
Kim, Yu-Gyeong [1 ]
机构：
[1] ITER Korea, Natl Fus Res Inst, Daejeon 305333, South Korea
[2] Korea Inst Ind Technol, Incheon 21999, South Korea
来源：
FUSION ENGINEERING AND DESIGN | 2019年 / 146卷
基金：
新加坡国家研究基金会;
关键词：
ITER; Vacuum Vessel Gravity Support; Interference fit; Shrink fit; Lumped capacitance method; Coolant charging method;
D O I：
10.1016/j.fusengdes.2019.03.063
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The ITER Vacuum Vessel (VV) is supported by the nine VV gravity supports (VVGS) located on the cryostat toroidal pedestal. The VVGS is dual hinge type that fastened by dowel in the hinge-block hole. This paper presents the technical approach and result on the interference fitting process of the sleeve to the full-scaled VVGS mock-up. Since the sleeve and the hinge-block hole have under millimeter tolerance and around two-meter long length, the shrink fit method has been selected for the interference fitting of the sleeve into the hinge-block hole. The duration time for required shrinkage was expected by the simple analytical approach of natural convective heat transfer. The coolant charging method was suggested to secure a sufficient time for the process. The liquid nitrogen was charged to the handling fixture capped sleeve hole's cavity. As a result, the necessary contraction time was secured as thousands of seconds. Consequently, the interference fitting was successfully done for VVGS mock-up fabrication, and the technical solutions will be applied to the VVGS manufacturing.
引用
收藏
页码：1907 / 1911
页数：5
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