超深水水下分离器承压性能数值分析与试验研究

发布时间：2018-04-10 16:20

本文选题：超深水水下分离器 + 嵌入式接管　；参考：《中国石油大学学报(自然科学版)》2016年06期

【摘要】：以中国自主设计制造的2 000 m超深水水下分离器为研究对象,基于图算法和一致缺陷模态法分析分离器样机极限承载能力;建立包含嵌入式接管子模型的水下分离器精细数值模型,研究马鞍形焊缝应力分布规律;设计高压舱试验验证水下分离器样机的物理承压能力,并对比分析高压舱试验数据和数值计算结果。研究表明:水下分离器样机失稳模式为塑性失稳,下放工况应该主要评估其结构强度;接管马鞍形焊缝的鞍点和冠点以及N1接管焊缝的角度φ为45°和135°位置为应力特征点;试验样机在高压舱试验过程中整体应力水平处于线弹性变形阶段,能够满足2 000 m水深的承压强度要求,模拟结果和试验结果吻合较好。
[Abstract]:Based on the graph algorithm and the uniform defect mode method, the limit bearing capacity of the separator prototype is analyzed based on the design and manufacture of 2 000 m ultra deep water underwater separator in China.The fine numerical model of underwater separator including embedded pipe connection model is established to study the stress distribution of saddle weld, and the physical bearing capacity of underwater separator prototype is verified by high-pressure chamber test.The test data and numerical calculation results are compared and analyzed.The results show that the instability mode of the underwater separator is plastic instability, the structural strength should be mainly evaluated in the down-running condition, the saddle point and crown point of the saddle weld and the angle 蠁 of N1 nozzle weld are the stress characteristic points at 45 掳and 135 掳.The whole stress level of the test prototype is in the stage of linear elastic deformation during the test process of the high-pressure chamber, which can satisfy the pressure bearing strength requirement of 2 000 m water depth, and the simulation results are in good agreement with the test results.
【作者单位】：中国石油大学海洋油气装备与安全技术研究中心;
【基金】：国家高技术研究发展计划项目(2013AA09A213) 中央高校基本科研业务费专项(14CX06123A) 山东省自然科学基金联合专项(ZR2014EL018)
【分类号】：TE95

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