高压钛合金法兰设计及数值分析研究  

Research on Design and Numerical Analysis of High-Pressure Titanium Alloy Flanges

作　　者：李成 贾文尖 周世豪 刘兴玉 史文祥 黄玖峰 Li Cheng;Jia Wenjian;Zhou Shihao

机构地区：[1]中国船舶集团有限公司第七二五研究所,河南省洛阳市471000

出　　处：《工程机械》2025年第4期122-130,I0006,共10页Construction Machinery and Equipment

摘　　要：针对现有高压力级别钛合金法兰标准缺少的情况,结合现有钢法兰研究基础,采用华脱斯法开展高压工况下的钛合金法兰密封性能及紧固件、垫片、法兰三者之间的匹配性研究。通过分析法兰厚度和法兰锥颈大端厚度对法兰轴向应力、径向应力和环向应力的影响趋势,获得法兰紧凑型设计方法。通过对原有法兰尺寸进行优化设计并利用有限元仿真软件对其不同工况进行模拟研究,得到其各应力场的分布和变形规律。最后,获得法兰结构合理、密封性能可靠的计算方法,为法兰小型化、轻量化设计提供一种参考,使其能够适用于船用工况。In view of the lack of existing standards on high-pressure titanium alloy flanges,combined with the existing research basis of steel flanges,the Waters method is used to study the sealing performance of titanium alloy flanges under high pressure working conditions and the matching between fasteners,gaskets and flanges.By analyzing the influence trend of flange thickness and flange neck thickness on the axial stress,radial stress and circumferential stress of the flange,a design method for compact flanges is obtained.By optimizing the original flange dimensions and using finite element simulation software to simulate and study different working conditions,the distribution and deformation law of each stress field are obtained.Finally,a calculation method for structural reasonableness and sealing performance reliability of the flange is obtained,which provides a reference for the miniaturization and lightweight design of the flange,so that it can be applicable to ship working conditions.

关 键 词：高压 钛合金法兰 匹配性 有限元分析 优化 

分 类 号：TG1[金属学及工艺—金属学]