管道压力对激光检测天然气管道泄漏影响分析

Investigation of the Effect of Pipeline Pressure on Laser Detection for Natural Gas Pipeline Leakage

在天然气管道泄漏检测中,激光检测是常用的技术手段,然而激光检测受天然气扩散过程的影响,会存在一定的偏差。基于对天然气管道泄漏过程的分析,建立了架空天然气高压管道泄漏扩散模型,在5p0、10p0、15p0三种管道压力情况下,进行了天然气管道泄漏过程的数值分析,并探讨压力对激光检测结果的影响。研究结果表明:在三种不同的高压管道内,天然气扩散受压力影响较小,且激光检测结果受其影响微弱,几乎无影响。

In the natural gas pipeline leakage detection, laser detection is a commonly used technical means. However, the laser detection under the effect of natural gas diffusion process, will be some deviation. Based on established overhead high pressure natural gas pipeline leakage diffusion model, in 5p0, 10p0, 15p0 three kinds of pipeline pressure, numerical analysis of natural gas pipeline leakage process is proceeded, and effect evaluate on the laser detection is discussed. The results show that the diffusion of natural gas is less affected by three kinds of high pressure pipelines, and has little influence on the laser detection results.