三偏心蝶阀密封副空间模型及应用  

Spatial Model and Application of Triple Offset Butterfly Valve Sealing Pair

作　　者：李朋宪 颜炳良 谢远奉 蒋继苇 余晓光 LI Peng-xian;YAN Bing-liang;XIE Yuan-feng;JIANG Ji-wei;YU Xiao-guang(Chongqing Chuanyi Control Valve Co.,Ltd.,Chongqing 400707,China)

机构地区：[1]重庆川仪调节阀有限公司,重庆400707

出　　处：《阀门》2024年第5期608-611,619,共5页VALVE MAGAZINE

摘　　要：正确设计阀座和密封圈的密封面加工尺寸,是三偏心蝶阀密封副(阀座和密封圈)经过加工后在关闭时能够严密配合且实现良好密封的前提。本文从三偏心蝶阀密封副的偏心结构特征和坐标转换的原理出发,建立密封面所在空间的斜圆锥面方程和密封副截面椭圆方程,通过该空间模型方程可以确定三偏心结构参数之间的相互关系。通过该空间模型方程,可以通过计算确定三偏心蝶阀密封面加工时测量尺寸的方法。此外,在阀座或密封圈偏离设计加工尺寸时,通过偏心结构参数之间的关系计算,快速得出相应需要单独设计的阀座或密封圈的加工测量尺寸。三偏心蝶阀密封副空间模型的建立在蝶阀产品现实设计加工过程中具有重要应用价值。Correctly designing the size of the sealing surface of the valve seat and sealing ring is the prerequisite for the sealing pair(valve seat and sealing ring)of the triple eccentric butterfly valve to fit tightly when closed and achieve a good seal after processing.In this paper,based on the eccentric structure characteristics and the principle of coordinate conversion of the sealing pair of the three-eccentric butterfly valve,the oblique conical surface equation and the elliptic equation of the cross-section of the sealing pair are established in the space where the sealing surface is located,and the interrelationship between the parameters of the three-eccentric structure can be determined through the space model equation.Through the spatial model equation,the method of measuring the size of the sealing surface of the triple eccentric butterfly valve can be determined by calculation.In addition,when the valve seat or seal ring deviates from the design processing size,the processing measurement size of the valve seat or seal ring that needs to be designed separately can be quickly obtained through the calculation of the relationship between eccentric structural parameters.The establishment of the space model of the sealing pair of the triple eccentric butterfly valve has important application value in the actual design and processing of butterfly valve products.

关 键 词：三偏心蝶阀 阀座 密封圈 密封面 测量尺寸 

分 类 号：TH134[机械工程—机械制造及自动化]