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- 저자 : Hicks III, Robby (검색결과 1 건)
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Piping structural design for the ITER thermal shield manifold
Noh, Chang Hyun,Chung, Wooho,Nam, Kwanwoo,Kang, Kyoung-O.,Bae, Jing Do,Cha, Jong Kook,Kim, Kyoung-Kyu,Hamlyn-Harris, Craig,Hicks III, Robby,Her III, Namil,Jun III, Chang-Hoon Elsevier 2015 Fusion engineering and design Vol.98 No.-
<P><B>Abstract</B></P> <P>The thermal shield (TS) provides the thermal barrier in the ITER tokamak to minimize heat load transferred by thermal radiation from the hot components to the superconducting magnets operating at 4.2K. The TS is actively cooled by 80K pressurized helium gas which flows from the cold valve box to the cooling tubes on the TS panels via manifold piping. This paper describes the manifold piping design and analysis for the ITER thermal shield. First, maximum allowable span for the manifold support is calculated based on the simple beam theory. In order to accommodate the thermal contraction in the manifold feeder, a contraction loop is designed and applied. Sequential Quadratic Programming (SQP) method is used to determine the optimized dimensions of the contraction loop to ensure adequate flexibility of manifold pipe. Global structural behavior of the manifold is investigated when the thermal movement of the redundant (un-cooled) pipe is large.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We finalized piping design of ITER thermal shield manifold for procurement. </LI> <LI> Support span is determined by stress and deflection limitation. </LI> <LI> SQP, which is design optimization method, is used for the pipe design. </LI> <LI> Benchmark analysis is performed to verify the analysis software. </LI> <LI> Pipe design is verified by structural analyses. </LI> </UL> </P>
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