Tryout of the vacuum impregnation procedure for the ITER PF1 coil on the VPI mold made of plastic shell

11th European Conference on Applied Superconductivity

Grigoriev, S.^1 ; Rodin, I.^1 ; Tanchuk, V.^1 ; Korban, S.^1 ; Bursikov, A.^1 ; Mednikov, A.^1 ; Pugachev, A.^2

D.V. Efremov Scientific Research Institute of Electrophysical Apparatus (NIIEFA), Russia^1

Forss Consulting Ltd, Russia^2

关键词: Excessive energy;    Full scale simulation;    Monolithic structures;    Stainless steel walls;    Technical specifications;    Technological process;    Vacuum impregnation;    Vacuum pressure impregnation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/3/032019/pdf
DOI  :  10.1088/1742-6596/507/3/032019

来源: IOP

【 摘 要 】

The PF1 Coil as part of the ITER superconducting magnet system is intended for positioning and shaping of the magnetic poloidal field. The technical specification for the PF1 coil requires a full-scale simulation of the basic technological processes including vacuum pressure impregnation (VPI). Usually, a VPI mold is made of massive stainless steel walls to get the required quality of the monolithic structure of the pancake insulation by hot-curing compound. As a result, we obtain a high-cost furnace with a considerable amount of steel inside to be heated up to the specified temperature; excessive energy consumption for the furnace heating system; problems with the vacuum tightness of the VPI mold. The impregnation procedure using a VPI "plastic" mold was proposed so as to avoid the above mentioned shortcomings associated with the use of the furnace made of stainless steel.