三偏心蝶阀强度和密封性能研究  

Study on Strength and Sealing Performance of Three Eccentric Butterfly Valve

作　　者：刘纯 李文凯 胡树文 LIU Chun;LI Wen-kai;HU Shu-wen(Beijing Aerospace Propulsion Institute,Beijing 100076,China)

机构地区：[1]北京航天动力研究所,北京100076

出　　处：《液压气动与密封》2024年第12期91-96,共6页Hydraulics Pneumatics & Seals

摘　　要：为了选取合适的蝶板和阀座材料,保证三偏心蝶阀强度和密封性能,仿真研究了3种不同材料对三偏心蝶阀强度和密封性能的影响。结果表明:对于GH4169、铝青铜和聚三氟氯乙烯阀座,三偏心蝶阀的密封压力分布都不均匀,阀轴附近存在低密封压力区;合适的蝶板和阀座材料可以增加低密封压力区的密封压力,提高三偏心蝶阀的强度和密封可靠性,其中铝青铜阀座的密封比压比是GH4169阀座的2倍左右,具有较好的强度和密封性能。To select the appropriate materials for the butterfly plate and valve seat to ensure the strength and sealing performance of the triple-eccentric butterfly valve,the effects of three different materials on the strength and sealing performance of the triple-eccentric butterfly valve were studied by simulation.The results show that for GH4169,aluminum bronze and polytrifluorochloroethylene seats,the sealing pressure distribution of the triple eccentric butterfly valve is uneven,and there is a low sealing pressure area near the valve shaft.The suitable materials of the butterfly plate and seat can increase the sealing pressure in the low sealing pressure area,and improve the strength and sealing reliability of the three-eccentric butterfly valve.The sealing specific pressure ratio of the aluminum bronze seat is about 2 times of that of the GH4169 seat,which has good strength and sealing performance.

关 键 词：三偏心蝶阀 密封压力 结构强度 材料 

分 类 号：TB42[一般工业技术]