论文部分内容阅读
为了维持EAST-NBI内的真空环境以满足中性束生成与传输过程对真空压力分布的要求,设计了EAST-NBI用差分式低温冷凝泵。本文概述了中性束注入加热的原理以及EAST-NBI真空系统的组成,详细阐述了EAST-NBI用差分式低温冷凝泵的结构设计,抽速和冷凝面积的确定,液氦系统和液氮系统热负荷的计算等关键问题。该差分式低温冷凝泵通过在EAST-NBI综合测试台上进行大量实验验证,完全满足EAST-NBI对真空系统的要求。
In order to maintain the vacuum environment in EAST-NBI to meet the requirement of vacuum pressure distribution in neutral beam generation and transmission, a differential cryogenic condensate pump for EAST-NBI was designed. In this paper, the principle of neutral beam injection heating and the composition of EAST-NBI vacuum system are summarized. The structural design, pumping speed and condensing area determination of EAST-NBI differential cryogenic condensate pump are described in detail. The liquid helium system and liquid nitrogen system Heat load calculation and other key issues. The differential cryogenic condensate pump meets EAST-NBI’s requirements for a vacuum system through extensive experimental validation on the EAST-NBI bench.