基于刚体向量变换法的高压容器卡箍受力分析  

Stress analysis of clamps for high-pressure vessels based on rigid body vector transformation method

作　　者：孔德洲 丁珮珊 蔡天舒 唐顺杰 郑小涛[1] KONG Dezhou;DING Peishan;CAI Tianshu;TANG Shunjie;Zheng Xiaotao(School of Mechanical and Electrical Engineering,Wuhan Institute of Technology,Wuhan 430205,China;Wuhan Haiwang Electromechanical Engineering Technology Co.,LTD,Wuhan 430205,China)

机构地区：[1]武汉工程大学机电工程学院,湖北武汉430205 [2]武汉海王机电工程技术有限公司,湖北武汉430205

出　　处：《武汉工程大学学报》2025年第1期75-79,共5页Journal of Wuhan Institute of Technology

基　　金：武汉工程大学第十四届研究生教育创新基金(CX2022114)。

摘　　要：针对分瓣式卡箍的螺栓连接结构在连接高压容器筒体和封盖的过程中出现变形过大及强度破坏问题,提出了一种基于刚体向量变换法的卡箍间分瓣力解析方法。根据内压及筒体内径计算出筒体和封盖向两端分离的轴向水平力,将该力均布到卡箍内锥面中间的受力圆环上,利用锥面角和轴向水平力计算出受力圆环上任意一点的锥面正交力(线比压)。线比压绕轴向转动不同角度即代表不同分瓣数对应的分瓣角,线比压绕轴向转动一定角度后,将其径向分力分解到分瓣面方向,沿受力圆环在分瓣角内积分计算出分瓣力。经过仿真验证,理论分析与有限元仿真结果吻合良好,结果表明该方法能准确计算不同分瓣数分瓣式卡箍间的分瓣力,可为分瓣式卡箍连接结构设计提供依据。A method for analyzing the splitting force between clamps based on rigid body vector transformation was proposed to address the problems of excessive deformation and strength failure in the bolted connection structure of split clamps during the connection of high-pressure vessel cylinders and end caps.The axial horizontal force separating the cylinder and cap towards both ends was calculated based on internal pressure and cylinder inner diameter.This force is evenly distributed to the force ring in the middle of the clamp's inner cone surface.Utilizing the cone angle and axial horizontal force,the orthogonal force of the cone surface at any point on the force ring(line specific pressure)was computed.Rotating the line specific pressure around the axial direction at different angles represents corresponding numbers of lobes.After rotating a certain angle around the axial direction,the radial force was decomposed into the lobe surface direction,and then the lobe force was calculated by integrating along the force ring within the lobe angle.Simulation verification showed good agreement between theoretical analysis and finite element simulation results,indicating that this method can accurately calculate the splitting force between different numbers of lobes in split-type clamps,providing a basis for the design of split clamp connection structures.

关 键 词：高压容器 封盖 筒体 卡箍 分瓣力 线比压 

分 类 号：TB42[一般工业技术]