超低温阀门比压补偿式密封结构的研制  

Development of Seal Specific Pressure Compensation Structure of Cryogenic Valve

作　　者：朱绍源 徐滟[2] 余金贤 郭怀舟 吴怀昆 郝伟沙 高红彪 叶鹏豪 ZHU Shao-yuan;XU Yan;YU Jin-xian;GUO Huai-zhou;WU Huai-kun;HAO Wei-sha;GAO Hong-biao;YE Peng-hao(Hefei Tongyong Environmental Control Technology Co. , Ltd, Hefei 230088, China;Hefei University,Hefei,230601 ,China;ULO Valve Co. ,LTD,Wenzhou 325105 ,China)

机构地区：[1]合肥通用环境控制技术有限责任公司,安徽合肥230088 [2]合肥学院,安徽合肥230601 [3]永隆阀门有限公司,浙江温州325105

出　　处：《阀门》2018年第2期29-33,共5页VALVE MAGAZINE

摘　　要：介绍了超低温阀门密封部位泄漏与其密封材料低温性能和密封比压补偿结构的关系,分析了阀门密封失效机理、材料选用、密封结构特点和密封比压计算过程,总结了阀门样机低温性能试验验证结果。针对超低温下因阀门密封比压下降造成的密封失效问题,提出一种比压补偿结构,使阀门在超低温下自动补偿由于温差带来的密封比压下降,强化密封性能。This paper introduces the relations between the sealing failure of cryogenic valve and the lowtemperature performance of the sealing material and sealing specific pressure compensation structure,analyses valve seal failure mechanism,material selection,sealing structure features and seal specific pressure calculation process,summarizes verification results for cryogenic performance test of valve prototype. With regard to the sealing failure caused by pressure drop under cryogenic,a specific pressure compensation structure is proposed,that not only can self-compensate the seal specific pressure drop caused by the temperature difference under cryogenic,but also can strengthen the sealing effect.

关 键 词：低温阀门 密封 比压 结构 

分 类 号：TH134[机械工程—机械制造及自动化]