【作者】 韩东亮；

【导师】 任慧龙；

【作者基本信息】 哈尔滨工程大学 ， 船舶与海洋结构物设计制造， 2011， 硕士

【摘要】 管线强度试验是在管线初次运转之前,为保证其严密性和运转时的安全可靠性而做的一项综合性的试验工作,各个船级社对金属管道均要求进行1.2～1.5倍设计压力的强度试验。强度试验在各个行业中进行时不时发生管线破裂而导致爆炸,造成人员伤亡及财产损失。而按照我国有关规定,压力大于1OMPa以上管路属于高压管线,以钻井平台为例,高压管线工作压力可达140MPa,其强度试验是平台所有试验中最为危险的试验。因此,对钻井平台高压管线强度试验进行安全性研究就显得尤为重要。本文旨在对钻井平台高压管线强度试验进行安全性研究,依据相关实例资料,应用焊接性理论、管线应力分析理论以及安全性分析理论,具体进行了以下方面的工作：1.对实例平台高压管线所用材料ASTM 4130钢进行有关焊接冷裂纹敏感性的焊接性研究,通过研究以尽量避免高压管线在焊接过程中裂纹等缺陷的产生,减少其对强度试验的影响,为工程实践提供建议和理论支持。2.对平台高压管线及组成件在受强度试验条件下的理论分析,运用CAESARⅡ和MSC.PATRAN/NASTRAN软件,从整个实例管线系统和局部特征管件入手,对它们进行强度试验条件下应力分析,并对试压管线危险部位进行应力测试方法研究。3.通过建立钻井平台强度试验失败故障树的形式进行安全性研究分析,并结合上述论证和实际提出较为合理的试验方案,以此对平台高压管线强度试验安全试验方法提供指导和建议。更多还原

【Abstract】 The pipeline intensity test is a general test that in order to ensure the tightness and reliability before the initial operation, metal pipeline is required to do a intensity test which pressure is 1.2 to 1.5 times of design pressure by every classification societies. It is usually happened that pipeline exploded because of breaking while the intensity test in every industry which caused serious casualties and property losses. According to the related regulations of our country, the pipeline which pressure is more than lOMPa is defined as high-pressure pipeline. Take drilling unit for example, the working pressure of the high-pressure pipeline can reach 140MPa, and the intensity test is the most dangerous test among the tests of platform.Therefore, the safety research on high-pressure pipeline intensity test of drilling platform becomes much more important.The aim of this paper is to do a safety research on high-pressure pipeline intensity test of drilling platform. According to related samples, pipeline weldability, stress analysis and security analysis theory, the detailed work is as follows:1. Make a research of weldability of platform pipeline material-ASTM 4130 steel which is related to cold-cracking sensitivity in order to avoid the lack of flaw, reduce the impact on intensity test and give advice and theory support for engineering practice.2. Make a theoretical analysis for high-pressure pipeline and related piping components on platform under the condition of intensity test, CAESAR II and MSC.PATRAN/NASTRAN programs are used as numerical simulation in the global and local pipeline to make stress analysis and comparisons. Then research and establish a stress testing method for dangerous section of testing pipeline.3. The fault tree analysis methods are used for the security analysis of intensity test. Combining with the study results and engineering practice, provide a reasonable test solution as instructions and advice for high-pressure pipeline safety intensity test method.更多还原