Status of the EU DEMO breeding blanket manufacturing R&D activities
Status of the EU DEMO breeding blanket manufacturing R&D activities
复制标题
欧盟DEMO养殖毯制造R现状
DOI：
10.1016/j.fusengdes.2019.111420
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发表时间：
2020
影响因子：
1.7
通讯作者：
L. Vála
中科院分区：
文献类型：
--
作者：
L. Forest;J. Aktaa;L. Boccaccini;Thomas Emmerich;Bradut Eugen;Gilles Fondant;A. Froio;A. Puma;H. Namburi;H. Neuberger;J. Rey;L. Savoldi;D. Sornin;L. Vála
欧洲认为，在热核实验堆之后实现示范聚变发电反应堆(DEMO)，到2050年将有能力产生数百兆瓦的净电力，并以封闭燃料循环运行，这是开发聚变电力的关键一步。EUROFusion联盟在欧洲地平线2020计划的框架内，一直在评估四种不同的育种毯子概念，以选择用于演示的参考概念。本文描述了为四个包层概念开发和设想的技术和制造方案，包括核“常规”组装工艺，如GTAW、电子束和激光焊接、热等静压(HIP)，以及更先进的(从核的角度)技术，作为附加制造技术。这些开发是按照国际标准和/或设计/制造规范进行的。讨论了EUROFER钢的冶金焊接性和相关风险或开发合适的填充焊丝等主题。提出了用真空等离子喷涂的方法在第一壁上开发以功能梯度(FG)过渡层作为W与EUROFER基材之间的柔顺层的W保护层。第一层体系表现出良好的层结合力、热疲劳和热冲击性能。以FG W/EUROFER涂层的第一面墙为代表的氦冷模型是为了在HELOKA设施中在相关热流下进行测试活动而开发的。首先给出了水冷概念的双壁管(DWT)制造和管板组装的要素，包括旨在评估其在腐蚀下的行为的测试活动。此外，还提出了进一步的发展策略。
The realization of a DEMOnstration Fusion Power Reactor (DEMO) to follow ITER, with the capability of generating several hundred MW of net electricity and operating with a closed fuel-cycle by 2050, is viewed by Europe as the remaining crucial step towards the exploitation of fusion power. The EUROfusion Consortium, in the frame of the European Horizon 2020 Program, has been assessing four different breeding blanket concepts in view of selecting the reference one for DEMO. This paper describes technologies and manufacturing scenarios developed and envisaged for the four blanket concepts, including nuclear “conventional” assembly processes as GTAW, electron beam and laser welding, Hot Isostatic Pressing (HIP), and also more advanced (from the nuclear standpoint) technologies as additive manufacturing techniques. These developments are performed in conformity with international standards and/or design/manufacturing codes. Topics as the metallurgical weldability of EUROFER steel and the associated risks or the development of appropriate filler wire are discussed. The development of protective W-coating layers on First Wall, with Functionally Graded (FG) interlayer as compliance layer between W and EUROFER substrate, realized by Vacuum Plasma Spraying method, is also propounded. First layer systems showed promising layer adhesion, thermal fatigue and thermal shock properties. He-cooled mock-ups, representative of the First Wall with FG W/EUROFER coating are developed for test campaigns in the HELOKA facility under relevant heat fluxes.First elements of Double Walled Tubes (DWT) manufacturing and tube/plate assembly for the water cooled concept are given, comprising test campaign aiming at assessing their behaviour under corrosion.In addition, further development strategies are suggested.