Optimization and testing of a Mass Spectrometer Leak Detection (MSLD) system

IF 0.5 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Materials Evaluation Pub Date : 2023-12-01 DOI:10.32548/10.32548/2023.me-04345
Guoyun Bai, Xindong Hu, X. Liao, Tao Chen, Rongmin Pan, Yanxia Li, Junlan Chang
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Abstract

A rapid helium mass spectrometry leak detection method is established to respond to problems of low sensitivity and efficiency in detecting leaks in large vessels. The optimized multistage tandem leak detection system improves leak detection sensitivity by increasing the amount of gas entering the analysis chamber. By involving the main pumping system in the detection process, the effective pumping speed is increased, resulting in a significant reduction in system response time. Additionally, the optimal leak detection vacuum required for maximizing the leak velocity indicating gas movement is determined, thereby further decreasing the system’s response time. Our application demonstrates that the optimized leak detection system increases sensitivity by one to two orders of magnitude, reduces system response time by over 90%, and shortens evacuation time by 7 h. Ultimately, the optimized design of the vacuum system developed for large vessels demonstrates greatly improved leak detection efficiency and overall capability.
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质谱仪泄漏检测(MSLD)系统的优化和测试
针对大型容器泄漏检测灵敏度低、效率低的问题,建立了一种快速氦质谱泄漏检测方法。优化的多级串联检漏系统通过增加进入分析室的气体量来提高检漏灵敏度。通过让主抽气系统参与检测过程,提高了有效抽气速度,从而显著缩短了系统响应时间。此外,还确定了泄漏速度最大化所需的最佳泄漏检测真空度,从而进一步缩短了系统的响应时间。我们的应用表明,优化后的检漏系统将灵敏度提高了一到两个数量级,系统响应时间缩短了 90% 以上,排空时间缩短了 7 小时。最终,为大型船舶开发的真空系统优化设计大大提高了检漏效率和整体能力。
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来源期刊
Materials Evaluation
Materials Evaluation 工程技术-材料科学:表征与测试
CiteScore
0.90
自引率
16.70%
发文量
35
审稿时长
6-12 weeks
期刊介绍: Materials Evaluation publishes articles, news and features intended to increase the NDT practitioner’s knowledge of the science and technology involved in the field, bringing informative articles to the NDT public while highlighting the ongoing efforts of ASNT to fulfill its mission. M.E. is a peer-reviewed journal, relying on technicians and researchers to help grow and educate its members by providing relevant, cutting-edge and exclusive content containing technical details and discussions. The only periodical of its kind, M.E. is circulated to members and nonmember paid subscribers. The magazine is truly international in scope, with readers in over 90 nations. The journal’s history and archive reaches back to the earliest formative days of the Society.
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