CAJ | 학술논문

对目前国内输气管道在投产过程中气体置换现状进行了分析，重点介绍了比较常见的置换工艺，并从安全、效果以及现场实际操作难易程度等方面，考察了不同置换方式的优缺点，确定了不加隔离器的氮气置换方法为最佳的置换工艺。此外还重点介绍了输气管道投产置换过程气体混合规律的研究进展和成果，通过对目前研究现状分析，指出了各研究手段的利弊，在今后的研究过程中需对各置换参数进行更加深层次的研究，不仅要有理论推导和数值模拟，更要对所得结果与现场进行反复验证和修正。
대목전국내수기관도재투산과정중기체치환현상진행료분석，중점개소료비교상견적치환공예，병종안전、효과이급현장실제조작난역정도등방면，고찰료불동치환방식적우결점，학정료불가격리기적담기치환방법위최가적치환공예。차외환중점개소료수기관도투산치환과정기체혼합규률적연구진전화성과，통과대목전연구현상분석，지출료각연구수단적리폐，재금후적연구과정중수대각치환삼수진행경가심층차적연구，불부요유이론추도화수치모의，경요대소득결과여현장진행반복험증화수정。
Status of gas replacement processes during gas pipeline commissioning in China was analyzed. Common replacement methods were compared. Advantages and disadvantages of different displacement methods were investigated from the view of safety, effect and degree of difficulty of actual operation. The results show that the nitrogen replacement method without isolator is the best. Research progress and results of the gas mixing rule in the replacement process were introduced. Through analyzing the present status of the research, advantages and disadvantages of various research methods were put forward. It’s pointed out that the displacement parameters should be deeply studied in future, the theoretical derivation and numerical simulation should be strengthened, and field verification and correction of obtained results are also strengthened.