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长输管线泄漏检测技术是管道输送业正常、高效运行的保证 ,由于气体具有可压缩性、摩阻小、管输压力高、流速快等特点 ,致使气体长输管线的泄漏检测技术相对液体管线难度要大一些。本文首先介绍几种适合于气体管线的泄漏检测技术及其工作原理 ,然后结合我国气体长输管线的实际情况 ,提出了实际实施过程中应该注意的若干问题及相应对策。
The long-distance pipeline leakage detection technology is the guarantee of normal and efficient operation of pipeline transportation. Due to its compressibility, small friction, high pressure in pipelines and fast flow rate, the technology of leak detection of long-distance gas pipeline is more effective than liquid pipeline More difficult. This paper first introduces several leak detection techniques and their working principles suitable for gas pipeline, and then puts forward some problems that should be noticed in the actual implementation of the gas pipeline combined with the corresponding countermeasures in light of the actual situation of China’s gas long-distance pipeline.