Design of the helium gas transfer line for the Warm Regeneration System of the ITER fusion reactor

27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018

Dinh, F.^1 ; Giors, S.^3 ; Hughes, S.^3 ; Kouzmenko, G.^2 ; Mussinatto, A.^1 ; Popova, L.^1 ; Roveta, G.^1 ; Roveta, M.^1

Criotec Impianti S.p.A., Via Francesco Parigi 32/A, Chivasso

10034, Italy^1

Fusion for Energy (F4E), c/Josep Pla Torres Diagonal Litoral B3, Barcelona

08019, Spain^2

ITER Organization (IO), Route de Vinon sur Verdon, 13067 Saint-Paul-lez-Durance, Cedex

CS

90046, France^3

关键词: Cryogenic process;    Cryogenic transfer line;    Flanged connection;    Mechanical characterizations;    Neutral beam injectors;    Nuclear environments;    Pressure and temperature;    Regeneration system;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012076/pdf
DOI  :  10.1088/1757-899X/502/1/012076

来源: IOP

【 摘 要 】

The Warm Regeneration Lines are a system of about 500 meters of flexible cryogenic transfer lines for the Warm Regeneration System of the ITER fusion reactor. The lines have been designed to transfer helium gas in a temperature range 100K/500K and a pressure range 1.2MPa/1.8MPa, for the regeneration of the cryopumps in the Torus Vacuum Vessel, Cryostat and Neutral Beam injector's vessel and for the cryopumps cool-down/warmup from/to room temperature. The lines consist of an inner gas line in an outer vacuum jacket. In order to facilitate the installation in a congested plant environment, the WRL have been designed with custom flanged connections for the cryogenic process pipe and for the vacuum jacket. Many tests have been performed on the lines, among which a mechanical characterization for seismic qualification in nuclear environments, a pressure drop test and a pressure and temperature 100 cycles test to validate the leak tightness of the cryogenic flanged connections.Published under licence by IOP Publishing Ltd.