LNG超低温设备密封件的结构及试验方法  

Structure and Test Methods of Seals for LNG Cryogenic Equipment

作　　者：曾军林 李厚宁 黄广明 朱留存 邱质彬 ZENG Jun-lin;LI Hou-ning;HUANG Guang-ming;ZHU Liu-cun;QIU Zhi-bin(Guangzhou JST Seals Technology Co., Ltd., Guangzhou 510700,China)

机构地区：[1]广州加士特密封技术有限公司,广东广州510700

出　　处：《液压气动与密封》2017年第2期56-59,共4页Hydraulics Pneumatics & Seals

摘　　要：通过对超低温密封产品结构的设计和密封材料进行改性,研究出一种可靠的密封件,通过液氮深冷到-196°C,用氦气作为密封介质,按照英国低温阀门标准BS 6364 1984中的实验步骤来验证密封结构的合理性,并进行优化。经优化验证,密封结构设计合理,材料物理性能优越,可以推广应用到LNG超低温设备中,弥补了国内在超低温设备密封上的难点。Through the ultra-low temperature sealing product design and sealing material modified to develop a reliable seal, through the liquid nitrogen cryogenic to -196°C, with helium as the sealing medium, according to the British low temperature valve standard BS 6364 1984 In the experimental steps to verify the sealing structure of the rationality, and to optimize. The optimized design of the sealing structure and the superior physical properties of the material can be popularized and applied to the cryogenic equipment of LNG, which makes up the difficulty of the domestic ultra-low temperature equipment sealing.

关 键 词：超低温 U型密封环 工字槽 改性PTFE 液化介质 

分 类 号：TB42[一般工业技术]