Conceptual Design and Finite Element Analysis of STR-3 Feeder for ITER

摘要

The three structure (STR) cooling feeders of the international thermonuclear experimental reactor play an important role in removing heat loads from the coils cases of the superconducting magnets system. In this paper, the materials choice and conceptual design of STR-3 feeder are presented, then the structural analyses are performed based on the finite element method, which is used to evaluate the mechanical characteristics of STR-3 feeder. The results show that the structural design is basically reasonable, but the U bend or S bend structure near terminal box is necessary. Furthermore, the further structural optimization, reducing the heat leakage to cryopipes, radiation of composite insulation materials, overpressure protection and seismic analysis proposals are put forward.