长输油管道泄漏检测技术研究现状

随着人工智能技术的发展以及大数据互联网技术的应用,管道泄漏检测技术向智能化的方向发展。将管道泄漏检测技术分为连续性技术和非连续性技术两大类,介绍了多种泄漏检测方法的原理,总结并分析了国内外长输油管道泄漏检测技术的研究现状,对多种检测方法相结合的输油管道泄漏检测与定位技术在长输油管道检测中的应用进行了展望。

油气储运技术发展现状和趋势

在科技进步的带动下,新工艺、新技术、新设备、新材料不断的被采用,油气储运的范围在不断的被拓展,本文重点介绍了数字管道技术、管道完整性技术、管道泄漏检测技术和管道抢维修等技术发展现状及趋势。

Using acoustic technique to detect leakage in city gas pipelines

For solving the difficult problem of leakage detection in city gas pipelines, a method using acoustic technique based on instantaneous energy (IE) distribution and correlation analysis was proposed. Firstly, the basic theory of leakage detection and location was introduced. Then the physical relationship between instantaneous energy and structural state variation of a system was analyzed theoretically. With HILBERT-HUANG transformation (HHT), the instantaneous energy distribution feature of an unstable acoustic signal was obtained. According to the relative contribution method of the instantaneous energy, the noise in signal was eliminated effectively. Furthermore, in order to judge the leakage, the typical characteristic of the instantaneous energy of signal in the input and output end was discussed using correlative analysis. A number of experiments were carried out to classify the leakage from normal operations, and the results show that the leakages are successfully detected and the average recognition rate reaches 93.3% among three group samples. It is shown that the method using acoustic technique with IED and correlative analysis is effective and it may be referred in other pipelines.

油气储运的发展现状及趋势研究

随着科技的不断发展,新材料、新设备、新工艺和新技术不断涌现,油气储运的应用范围也在不断拓展。本文重点探讨了油气储运中最基本的管道完整性技术、管道泄漏检测技术、数字管道技术以及管道抢维修技术的发展现状和趋势。