40T混合磁体低温分配阀箱真空系统设计

Design of vacuum system for cryogenic valve box of 40 T hybrid magnet

根据40 T稳态混合磁体低温分配阀箱对真空的要求,对低温分配阀箱真空系统进行了设计,设计结果如下:选择阀箱真空室的壳体形状,通过计算确定出真空室壳体壁厚为12 mm;选择封头形状,对封头强度进行校核,确定封头壁厚为16 mm;对整个真空系统抽真空泵机组进行选型,选出粗抽泵机组由一套ZJ-150罗茨泵和2XZ-30旋片式真空泵组成,主抽泵由一套F-100/110分子泵和2X-4旋片式机械泵组成,可达到阀箱对真空度的要求。

Based on the vacuum requirement of the cryogenic valve box, the vacuum system for cryo- genic valve box of 40 T hybrid magnet was designed. The design results were as follows：selecting the shell shape of the vacuum chamber of the valve box, the wall thickness of the vacuum chamber was 12 mm; selecting the shape of shell cover, the wall thickness of the shell cover was 16 mm; the entire vacuum sys- tem vacuum pump units were selected, roots pumping sets consisting of one ZJ-150 and 2XZ-30 pumps, tur- bo-molecular pumping sets consisting of one F-100/110 and 2X-4 pumps. The vacuum system can meet the vacuum requirement of the cryogenic valve box.