煤气与热力2026，Vol.46Issue(8)：61-64,4.
燃气切断阀两级密封结构的研究
Research on Two-Stage Sealing Structure of Gas Shut-Off Valves
刘洋 1周士钧 1陈叶 1张英 1王国庆1
作者信息
- 1. 上海飞奥燃气设备有限公司,上海 201201
- 折叠
摘要
Abstract
To address the challenge of high manual reset force following shut-off in large-diameter,high-pressure-difference applications-particularly for shut-off valves equipped with single-stage sealing gaskets,a novel two-stage sealing gasket structure is proposed.Theoretical analysis of a representative case reveals that the minimum pulling forces required for manual reset are 404 N for single-stage sealing and 47 N for two-stage sealing respectively;the minimum force required for two-stage sealing is much lower than that for single-stage sealing.Experimental results show that the average pulling force required for manual reset of the two-stage sealing shut-off valve is approximately 1/8 of that of the single-stage sealing valve.The shut-off valve adopting a two-stage sealing gasket can effec-tively mitigate the manual reset difficulty inherent in conventional single-stage designs.关键词
燃气切断阀/阀垫/单级密封/两级密封Key words
gas shut-off valve/valve gasket/single-stage sealing/two-stage sealing分类
建筑与水利引用本文复制引用
刘洋,周士钧,陈叶,张英,王国庆..燃气切断阀两级密封结构的研究[J].煤气与热力,2026,46(8):61-64,4.
