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爆破吹扫法通常应用于大直径管道或拐弯多、支线多、脏物不易清除的管道。介绍了爆破吹扫原理:将管道的一端用低强度爆破片封堵,采用压缩机对管道进行充气升压,当压力达到一定程度时,爆破片破裂,管内杂质被高速喷出的气流带出。详细阐述了爆破吹扫施工安全要求,并介绍了爆破吹扫技术工艺特点及工艺流程。将该技术应用于国内某天然气站内管道,实践证明:站内管道爆破吹扫时,气体向外的流速可达100m/s以上,不但管内杂物能被清除干净,而且可以扫除管道拐角处的石块。
Bursting blasting method is usually used in large diameter pipe or turning more and more branch lines, dirt is not easy to remove the pipe. The principle of blasting and purging is introduced. One end of the pipeline is sealed with low intensity rupture disk, and the compressor is used to inflate and pressurize the pipeline. When the pressure reaches a certain level, the rupture disk ruptures and the impurities in the tube are blown out by the high speed jet . Described in detail the safety requirements of blasting construction, and introduced the characteristics of blasting and purging technology process. The technology is applied to a certain natural gas station pipeline in China. Practice has proved that when the pipeline blasting inside the station is purged, the outward flow velocity of the gas can reach more than 100m / s, not only can the debris in the pipe be removed cleanly, but also the stone at the corner of the pipe can be swept away Piece.