压力容器2026，Vol.43Issue(2)：1-11,11.DOI:10.3969/j.issn.1001-4837.2026.02.001
基于螺栓载荷的双锥密封垫片接触压力监测方法及试验验证
Monitoring method for contact pressure of double-cone gasket based on bolt load and experimental verification
摘要
Abstract
To address the leakage risk in the double-cone seal structure of high-pressure vessels and the difficulty of directly measuring the gasket contact pressure,an indirect contact pressure monitoring method based on bolt load measurement is proposed.A mechanical model of the double-cone seal structure is established,and a linear mapping relationship between the bolt load and the average gasket contact pressure is derived.Based on plate and shell bending theory,the deflection angle of the flat cover is introduced to develop an analytical calculation method for the contact pressure that accounts for non-uniform radial distribution.A leakage simulation test bench for the double-cone seal is constructed,where washer-type sensors and pressure-sensitive paper are used to obtain the bolt load and contact pressure,respectively,and the proposed method is verified through finite element simulations.Experimental and simulation results show that within the internal pressure range of 0～4 MPa,the error between the analytically calculated average contact pressure and the measured values is less than 16％;in the simulation under a high-pressure condition of 15 MPa,the error is only 0.8％～2.6％.The radial distribution of the gasket contact pressure exhibits a pattern of"high at both ends and low in the middle",and the theoretically calculated distribution is in strong agreement with the results obtained from pressure-sensitive paper measurements and simulations.This method enables accurate inversion of the gasket contact pressure state by monitoring the bolt load,confirming the validity of the model and providing an effective technical approach for the safety monitoring of double-cone seal structures.关键词
双锥密封/螺栓载荷/接触压力/静密封/监测方法Key words
double-cone seal/bolt load/contact pressure/static seal/monitoring method分类
机械制造引用本文复制引用
王琇峰,莫彤,王晗博,汪海洋,赵雪岑,陈智..基于螺栓载荷的双锥密封垫片接触压力监测方法及试验验证[J].压力容器,2026,43(2):1-11,11.基金项目
国家自然科学基金项目(U2267206) （U2267206）
