管道泄漏声发射内检测装置研究

发布时间：2018-03-15 06:30

本文选题：输气管道　切入点：泄漏检测　出处：《西安石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着我国城市发展、能源供应及石油化工等行业的发展,作为石油及天然气主要运输方式的管道运输越来越受到社会各界的重视,其建造量也在逐年上升。输气管道在长时间运行过程中,由于自然老化、腐蚀以及第三方破坏等原因,将不可避免发生破裂或穿孔等泄漏事故,导致气体在短时间内大量外泄并迅速扩散,造成爆炸和大范围火灾,对人民生命、财产、周边环境造成极大的危害。因此研究一种管道早期泄漏的有效检测方法势在必行。声发射技术自上世纪七十年代进入中国以来,在我国特种装备检测行业发展迅速,逐渐成为一种主要的检测方法。本文主要介绍国际上主要的管道内检测方法,并针对泄漏声发射检测方法,深入研究了输气管道泄漏声信号的发声机理、声源特性、传播特性、声信号分析处理方法,并试制了输气管道泄漏声发射内检测系统,通过现场实验验证了该系统具有一定的实际应用价值及广阔的发展前景。
[Abstract]:With the development of cities, energy supply and petrochemical industry in China, pipeline transportation, as the main transportation mode of oil and natural gas, has attracted more and more attention from all walks of life. During the long period of operation, due to natural aging, corrosion and third party damage, leakage accidents such as rupture or perforation will inevitably occur. Causing the gas to leak out and spread rapidly in a short period of time, resulting in explosions and widespread fires, and causing damage to people's lives and property. Therefore, it is imperative to study an effective detection method for early leakage of pipelines. Since acoustic emission technology entered China in -30s, it has developed rapidly in China's special equipment testing industry. In this paper, the main detection methods in pipeline are introduced, and the sound mechanism, sound source characteristics, propagation characteristics of leakage sound signal in gas pipeline are studied in detail, aiming at the leak acoustic emission detection method. The acoustic signal analysis and processing method and the internal detection system for leakage acoustic emission of gas transmission pipeline are developed. The field experiments show that the system has certain practical application value and broad development prospect.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE973.6

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