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R&D achievements for vacuum vessel towards CFETR construction

Zhihong Liu, Haibiao Ji, Jiefeng Wu, Huapeng Wu, Jianguo Ma, Xiaosong Fan, Rui Wang, Yongqi GU, Kun Lu, Hong Ran2020年被引用 7Nuclear FusionIF 3出版社

The next generation of magnetic confinement fusion experimental facility, the China Fusion Engineering Test Reactor (CFETR), is currently undergoing physical and engineering design. The essential technology research and development projects related to CFETR manufacture are in progress. As one of the demo projects for CFETR R&D, a 1/8 full-scaled vacuum vessel (VV), which aims to solve the key technologies of forming, welding, measurement, assembly, etc in the future manufacturing process of VV, was initiated in 2015 by Institute of Plasma Physics Chinese Academy of Science (ASIPP). The fabrication of two full-scaled 22.5° toroidal sectors, which are composed of two 11.25° sectors, was successfully completed in June 2019. In the manufacturing process of the VV mockup, the progress has been made in the following six aspects: engineering design and safety evaluation of the VV mockup, the high-precision forming of the hyperbolic shell, the welding deformation control of 50 mm thick full penetration structure, the nondestructive testing of the complex welds by full volume covering, the establishment of high-precision 3D measurement fiducial network and the high-precision assembly of the VV parts. This article describes the progress and achievements of the above six aspects for the CFETR VV.

日本語訳

次世代の磁気閉じ込め核融合実験装置である中国核融合工学試験炉(CFETR)は、現在、物理設計と工学設計が進められている。CFETRの製造に関連する必須技術の研究開発が進行中である。CFETRの研究開発におけるデモプロジェクトの一つとして、将来のVV製造プロセスにおける成形、溶接、測定、組立などの主要技術の解決を目的とした、1/8スケールの真空容器(VV)が、2015年に中国科学院等离子体物理研究所(ASIPP)によって着手された。2つの11.25°セクターから構成される2つのフルスケール22.5°トロイダルセクターの製作は、2019年6月に成功裏に完了した。VVモックアップの製造プロセスにおいて、以下の6つの側面で進展が見られた:VVモックアップの工学設計と安全評価、双曲線シェルの高精度成形、50mm厚の完全貫通構造の溶接変形制御、複雑な溶接部の全体積を対象とした非破壊検査、高精度3次元測定基準ネットワークの構築、およびVV部品の高精度組立。本稿では、CFETR VVに関する上記6つの側面の進捗と成果を述べる。

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