液化天然气超低温球阀的密封技术研究综述  

Review on Sealing Technology of Liquefied Natural Gas Ultra-low Temperature Ball Valve

作　　者：刘余 楚佳薇 张海涨 谷世泽 徐富强 LIU Yu;CHU Jia-wei;ZHANG Hai-zhang;GU Shi-ze;XU Fu-qiang(Dongbao Valve Co.,Ltd.,Wenzhou 325102,Zhejiang,China)

机构地区：[1]东宝阀门有限公司,浙江温州325102

出　　处：《阀门》2024年第12期1521-1525,共5页Chinese Journal of Valve

摘　　要：液化天然气(LNG)作为一种清洁、高效的能源,在全球能源结构中占据着重要地位。液化天然气超低温球阀作为LNG输送系统中的关键设备,其密封性能直接影响到系统的安全性和可靠性。本文综述了液化天然气超低温球阀的密封技术研究进展,重点探讨了传统密封技术的局限性、新型密封材料的选择与特性以及新型密封技术的研发与应用,同时介绍了金属密封副、喷涂硬质合金涂层等新型密封技术。最后,本文展望了密封技术的未来发展方向,强调了智能化、新材料应用和结构优化等创新趋势,为液化天然气超低温球阀的密封技术研究提供益参考。Liquefied natural gas(LNG),as a clean and efficient energy source,holds a significant position in the global energy structure.The LNG cryogenic ball valve,as a crucial device in the LNG transportation system,its sealing performance directly influences the safety and reliability of the system.This paper reviews the research progress of the sealing technology for LNG cryogenic ball valves,with a focus on the limitations of traditional sealing technologies,the selection and characteristics of new sealing materials,as well as the research and development and application of new sealing technologies.Meanwhile,new sealing technologies such as metal sealing pairs and sprayed hard alloy coatings are introduced.Finally,this paper looks forward to the future development direction of sealing technologies,emphasizing innovative trends such as intelligence,the application of new materials,and structural optimization,providing beneficial references for the research on the sealing technology of LNG cryogenic ball valves.

关 键 词：液化天然气 超低温球阀 密封技术 新型材料 

分 类 号：TH134[机械工程—机械制造及自动化]