基于DEMO的机械管道连接设计开发

IF 0.5 Q4 NUCLEAR SCIENCE & TECHNOLOGY Journal of Nuclear Engineering and Radiation Science Pub Date : 2023-01-11 DOI:10.3390/jne4010008
Viktor Milushev, Azman Azka, M. Mittwollen
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引用次数: 0

摘要

DEMO繁殖毯的维护包括去除和更换面向等离子体的组件。为了进入繁殖毯,需要拆除多个冷却剂管道,以便进入托卡马克。作为减少停机时间和提高维护速度的一种选择,开发了管道连接概念,允许使用远程操作的机械连接同时拆除多个管道。远程操作的多管机械管连接(MPC)需要满足多种要求,例如高工作温度和高外力,同时在高压流体和真空环境之间保持可接受的密封水平。除了外部条件外,多种尺寸的管道和流体以流形结构连接。虽然与多个单管连接相比,这将减少操作机械管道连接所需的总时间,但由于管道流动(例如,同一歧管上同时存在高温和低温流体管道)通过歧管法兰之间的相互作用,这将引入额外的力和应力。在设计过程中考虑了多管复合材料的要求和边界条件。设计过程是为了找到最佳的形状和尺寸,以在维护阶段允许管道连接的机械功能,同时承受MPC在运行阶段将面临的极端操作条件。最终的设计将使用数值方法进行分析,以评估MPC设计的能力。
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Development of Mechanical Pipe-Connection Design for DEMO
Maintenance of the DEMO breeding blanket includes the removal and replacement of plasma-facing components. To access the breeding blanket, multiple coolant pipes need to be removed to allow access to the tokamak. As an option to reduce downtime and increase maintenance speed, the pipe-connection concept is developed to allow the removal of multiple pipes at the same time using a remotely operated mechanical connection. The remotely operated multi-pipe Mechanical Pipe Connection (MPC) needs to fulfil multiple requirements, such as high operating temperature and high external forces while at the same time maintaining an acceptable level of sealing between the high-pressure fluid and vacuum surroundings. In addition to the external conditions, the pipes of multiple sizes and fluids are connected in a manifold configuration. Although this will reduce the overall time required to operate the mechanical pipe connection when compared to multiple single-pipe connections, this will introduce additional forces and stresses due the interaction between pipe flow (e.g., simultaneous high- and low-temperature fluid pipes on the same manifold) through the manifold flange. The requirements and the boundary conditions of the multi-pipe MPC are taken into consideration during the design process of MPC. The design process is carried out to find the optimum form and size to allow the mechanical function of the pipe connection during the maintenance phase while withstanding the extreme operating conditions that the MPC will face the during operational phase. The resulting design will then be analyzed using numerical methods to assess the capability of the MPC designs.
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来源期刊
CiteScore
1.30
自引率
0.00%
发文量
56
期刊介绍: The Journal of Nuclear Engineering and Radiation Science is ASME’s latest title within the energy sector. The publication is for specialists in the nuclear/power engineering areas of industry, academia, and government.
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