深水水下分离器承压结构强度的可靠性

发布时间：2018-04-04 05:05

  本文选题：水下分离器　切入点：承压结构　出处：《油气储运》2017年08期

【摘要】：深水水下分离器服役环境下的载荷工况复杂,服役寿命易受多种因素影响。为了确保深水水下分离器服役期间的安全可靠性,进一步研究不同材料水下分离器承压结构的强度可靠性与设计尺寸及加工材料性能之间的定量关系,采用蒙特卡罗法,以承压结构壁厚、材料屈服强度等参数为随机输入变量,建立了承压结构串联系统模型,并且通过外压试验验证了模型的准确性。通过模拟承压结构设计参数的随机性,得到承压结构的应力强度分布特征和各参数对结构强度可靠性的敏感性和灵敏度。算例分析表明:在2 000 m深水条件下,水下分离器承压结构的可靠度达到99.565 3%,筒体壁厚是影响承压结构可靠性的最主要因素,该研究结果可为深水水下分离器的优化设计提供必要的技术参考。
[Abstract]:The service life of underwater separator is influenced by many factors because of its complex load condition.In order to ensure the safety and reliability of deep water underwater separator during service, and to further study the quantitative relationship between the strength reliability of underwater separator bearing structure with different materials and the design size and the properties of machining materials, Monte Carlo method is used.Taking the parameters such as wall thickness of confined structure and yield strength of material as random input variables, a series system model of pressure-bearing structure is established, and the accuracy of the model is verified by external pressure test.By simulating the randomness of the design parameters of the confined structure, the characteristics of stress intensity distribution and the sensitivity and sensitivity of the parameters to the structural strength reliability are obtained.The example analysis shows that under the condition of 2 000m deep water, the reliability of the pressure bearing structure of the underwater separator reaches 99.565 3, and the wall thickness of the cylinder is the most important factor affecting the reliability of the confined structure.The research results can provide the necessary technical reference for the optimization design of the deep water underwater separator.
【作者单位】： 中国石油大学(华东)海洋油气装备与安全技术研究中心;
【基金】：国家863计划资助项目“水下分离器关键技术研究”,2013AA09A213 中央高校基本科研业务费专项资金资助项目“深水水下分离器承压结构强度可靠性分析”,14CX06123A
【分类号】：TE952
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本文编号：1708489