聚变实验增殖堆FEB-E粒子抽除和抽气系统(英文)  

THE OUTLINE DESIGN OF FEB-E PARTICLE EXHAUST AND PUMPING SYSTEM

作　　者：朱毓坤[1] 黄锦华[1] 冯开明[1] 邓培智[1] 李毅强 

机构地区：[1]核工业西南物理研究院,成都610041

出　　处：《核聚变与等离子体物理》1999年第4期226-230,共5页Nuclear Fusion and Plasma Physics

摘　　要：ＦＥＢ－Ｅ的粒子抽除是通过偏滤器进行的。由４８ 个楔形气室模件环形组装而成的ＦＥＢ－Ｅ偏滤器，位于真空室的下部，与抽气系统和冷却系统相连。ＦＥＢ－Ｅ抽气系统有二个子系统：环粗抽系统和环高真空系统。环高真空系统是由一组处于真空室内１６ 个下部舱口内的低温泵和一组处于生物屏蔽层外的附加涡轮分子泵组成的。这些低温泵能提供的名义总抽速为５７６ｍ ３·ｓ－ １。在偏滤器高中性压力（＞ １Ｐａ）情况下，低温泵入口阀节流控制抽气粒子流。由于偏滤器抽气槽路以及偏滤器下侧通至真空室下部舱口的有限的通导能力，这些低温泵在偏滤器幽僻区域有效抽速为１６０ｍ ３·ｓ－ １。这意味着偏滤器幽僻区域的中性压力应在０．５－ １．０Ｐａ 范围内，以得到８０－ １６０Ｐａ·ｍ ３·ｓ－ １（在预期的偏滤器抽气槽路温度为４７３Ｋ时）范围内的抽气流量。低温泵每次在聚变实验增殖堆燃烧１０００ｓThe particle exhaust of Fusion Experimental Breeder FEB E is carried out with divertor.The FEB E divertor consists of 48 wedge shaped cassette modules connected with primary pumping system and cooling system.The FEB E pumping system consists of two major subsystems,the torus rough pumping system and the torus high vacuum pumping system.The torus high vacuum pumping system consists of a series of internal cryopumps located in most of the lower ports (up to 20) and additional turbomolecular pumps located outside of the bioshield.These cryopumps are capable of providing a nominal gross pumping speed of 576m 3·s -1 ,regulated with inlet valves for throttle control of the exhaust particle flow in the case of high neutral pressure (>1Pa) in the divertor.However,limited conductance through the divertor pumping slot and through the clearance between the underside of the divertor and the vacuum vessel results in an effective net pumping speed of 160m 3·s -1 in the divertor private region.This pumping speed implies that a neutral pressure operation range of 0.5-1.0Pa is required in the divertor private region to achieve an exhausting throughput range of 80-160Pa·m 3·s -1 .The regeneration of cryopump is activated at the end of the 1000s of the breeder burning.

关 键 词：聚变实验增殖堆 偏滤器 粒子抽除 抽气系统 

分 类 号：TL64[核科学技术—核技术及应用] TL628