ITER导体检漏真空室的设计与优化

Design and optimization of vacuum chamber for leak detection of ITER conductor

本文介绍了ITER导体检漏真空室的结构设计;对设置中部加强筋与不设置中部加强筋条件下的壁厚分别做了计算比较,表明设置中部加强筋后可以将壁厚减少4.3mm;给出了利用ANSYS软件对真空室壁厚进行优化计算的几何模型和数学模型,并得到最优壁厚分别为上、下封头15mm,中筒10mm;最后对真空机组进行了设计,选择1台1600L/s复合分子泵、1台15L/s前级泵、2台70L/s的粗抽泵组成的真空机组,达到1.

Introduces the structural design of the vacuum chamber for leak detection of ITER conductor. The wall thickness of the chamber with and without middle stiffener was calculated comparatively, and the result showed that 4.3mm can be decreased in wall thickness with middle stiffener. The geometric and mathematical models were developed for the optimal computation of wall thickness by use of the software ANSYS, and it was found that the optimal thicknesses of the top/bottom heads and cylinderical main part are 15mm and 10mm, respectively. For the vacuum unit comprising 1 set of 1600L/see compound molecular pump, 1 set of 15L/see fore pump and 2 sets of 70L/see roughing pump were designed, by which the pressure 1.0×10^-4pa requires 10hr for pumping out.