超高压管道自增强处理密封有限元分析  

Finite Element Analysis of Sealing for Self-reinforced Process of Ultra-high Pressure Pipeline

作　　者：吴话怡 周思柱[1] 李宁[1] 廖建敏[1] 李美求[1] 

机构地区：[1]长江大学机械结构强度与振动研究所

出　　处：《石油机械》2017年第3期118-121,共4页China Petroleum Machinery

基　　金：国家自然科学基金项目"超高压压裂泵自增强残余应力变化规律研究"(51374041);湖北省自然科学基金项目"海洋废弃桩基平台导管架切割过程屈曲临界载荷计算方法研究"(2015CFC859)

摘　　要：对超高压管道进行自增强处理可以延长其疲劳寿命,提高其结构强度。结合超高压管道的结构、自增强处理压力及加工工艺,提出了一种以组合锥环硬密封和环孔轴向组合挡圈相配合的自紧密封结构。通过对组合锥环密封和轴向组合挡圈部件的有限元分析,并结合密封材料的结构强度和密封比压,得出了组合锥环密封的最佳锥角为30°。对组合挡圈的厚度及结构进行了设计计算,得出了最佳挡圈厚度及结构形式。该密封结构可很好地提高管道密封可靠性。Self-reinforced process for ultra-high pressure pipeline can prolong the fatigue life , improve the structure strength. The key technology is the pipeline sealing in the process. Based on the ultra-high pressure pipe-line structure and the self-reinforced process pressure and processing technology, a sealing structure has been pro-posed ,which combines the composite taper ring hard seal and annular axial ring, and is suitable for self-reinforced process of ultra-high pressure pipeline. B y means of the finite element analysis of the composite taper seal and the annular axial ring component, the optimal taper angle of the composite taper ring seal is determined 30 ° . The thick-ness and structure of the composite retaining ring have been calculated and analyzed, and the optimal ring thickness and structure have been attained. The proposed sealing structure could well improve the reliability of the pipeline seal.

关 键 词：自增强 超高压密封 组合锥面密封 环孔轴向挡圈 

分 类 号：TE973[石油与天然气工程—石油机械设备]