天然气管道全尺寸止裂实验中的引燃实验
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摘要
为了在天然气输气管道全尺寸止裂实验中,有效收集天然气管道爆燃后的热辐射、冲击波和管道止裂尺寸等数据,采用电子雷管及其芯片技术,对管道天然气泄漏扩散并发生爆燃进行了模拟实验。运用线型聚能切割器在内装天然气的管道上爆破切开1条初始裂缝,在管道周围布置引燃弹点燃泄漏天然气与空气的混合物,利用电子雷管及其芯片控制起爆及引燃弹的发射时间,实现了精确点火。输气管道失效爆破实验取得了预期效果,为天然气泄漏危害范围的研究和输气管道钢材质量的判断提供了科学依据。在天然气输气管道全尺寸止裂实验的爆破工程中成功运用了电子雷管及其芯片技术,对类似爆破工程具有一定的参考意义。
In order to effectively collect technical parameters such as heat radiation, shock wave and pipe cracking size after natural gas pipeline deflagration in the full-scale crack arrest test of natural gas pipeline, electronic detonator and chip technology was adopted, a simulation experiment was conducted to simulate the leakage diffusion and deflagration of natural gas. The linear shaped charge cutter was used to blast and cut an initial crack in the pipeline containing natural gas. A ignition bomb was placed around the pipeline to ignite the mixture of leaking natural gas and air. The electronic detonator and its chip were used to control the detonation and the firing time of the ignition bomb. The expected results obtained from the pipeline invalid blasting experiment of gas transmission pipeline provide a scientific basis for the study of the damage range of natural gas leakage and the judgment of steel quality of gas transmission pipeline. The electronic detonator and its chip technology have been successfully used in the blasting engineering of full-size crack control experiment of natural gas transmission pipeline, which is certain reference significance to similar blasting engineering.
In order to effectively collect technical parameters such as heat radiation, shock wave and pipe cracking size after natural gas pipeline deflagration in the full-scale crack arrest test of natural gas pipeline, electronic detonator and chip technology was adopted, a simulation experiment was conducted to simulate the leakage diffusion and deflagration of natural gas. The linear shaped charge cutter was used to blast and cut an initial crack in the pipeline containing natural gas. A ignition bomb was placed around the pipeline to ignite the mixture of leaking natural gas and air. The electronic detonator and its chip were used to control the detonation and the firing time of the ignition bomb. The expected results obtained from the pipeline invalid blasting experiment of gas transmission pipeline provide a scientific basis for the study of the damage range of natural gas leakage and the judgment of steel quality of gas transmission pipeline. The electronic detonator and its chip technology have been successfully used in the blasting engineering of full-size crack control experiment of natural gas transmission pipeline, which is certain reference significance to similar blasting engineering.
引文
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[8]周伟国,刘东京,腾卯寅.天然气管道泄漏扩散CFD数值模拟[J].管道技术与设备,2015, 23(5):5-8.ZHOU W G,LIU D J,TENG M Y. CFD simulation on natural gas leakage and diffusion of high-pressure pipeline[J]. Pipeline Technology and Equipment,2015, 23(5):5-8.
[9]刘富君,凌张伟,孔帅,等.天然气管道泄漏扩散实时计算与爆燃危害预测研究[J].压力容器,2010(10):21-28.LIU F J,LING Z W,KONG S,et al. Research on the real-time calculation of gas leakage and diffusion and hazards prediction of fire and explosion for nature gas pipeline[J]. Pressure Vessel Technology, 2010(10):21-28.
[10]张迪,黄力平,赵勇,等.地铁隧道电子与非电子雷管爆破振动信号的HHT对比分析[J].工程爆破,2016,22(1):18-23.ZHANG D, HUANG L P, ZHAO Y, et al.Comparative analysis of blasting vibration signal with detonator and non-digital detonator in metro tunnel based an HHT method[J]. Engineering Blasting,2016,22(1):18-23.
[2]杨力,周翔,顾月兵,等.线性聚能切割器切割钢板的实验研究[J].工程爆破,2003,9(2):19-21.YANG L,ZHOU X,GU Y B,et al. An experimental study on use of linear cumulative charge for cutting of steel plate[J].Engineering Blasting,2003,9(2):19-21.
[3]马海洋,龙源,何洋扬.炸高对线型聚能切割器切割深度影响的数值分析[J].火工品,2008(4):28-32.MA H Y,LONG Y,HE Y Y. Numerical analysis on effects of burst height on penetration depth of LSCC[J]. Initiators&Pyrotechnics,2008(4):28-32.
[4]陈维炎,舒大强,黄玉锋,等.线性聚能装药爆破在水下工程的应用[J].爆破,2006,23(1):88-91.CHEN W Y, SHU D Q, HUANG Y F, et al. The penetration mechanism of linear shaped charge and its application in under water[J]. Blasting, 2006, 23(1):89-91.
[5]黄志潜.西气东输管道延性断裂的止裂控制[J].焊管,2001,3(2):1-10.HUANG Z Q. Anti-crack control of the fracture ductibility of gas transmitting pipeline from west to east[J]. Welded Pipe, 2001,3(2):1-10.
[6]陈福来,帅健.输气管道延性断裂的止裂结构及韧性确定方法[J].压力容器,2006(7):39-43.CHEN F L,SHUAI J. Arrest structure and dauctile determine methods of ductile fracture for gas transportation pipeline[J]. Pressure Vessel Technology-2006(7):39-43.
[7]陈福来,帅健.管道断裂中高压天然气减压行为研究评述[J].天然气工业,2006,11(11):136-138.CHEN F L,SHUAI J. Research discussion of decompression beha vior of high pressure naturl gas during pipeline fracture[J]. Natural Gas Industry, 2006,11(11):136-138.
[8]周伟国,刘东京,腾卯寅.天然气管道泄漏扩散CFD数值模拟[J].管道技术与设备,2015, 23(5):5-8.ZHOU W G,LIU D J,TENG M Y. CFD simulation on natural gas leakage and diffusion of high-pressure pipeline[J]. Pipeline Technology and Equipment,2015, 23(5):5-8.
[9]刘富君,凌张伟,孔帅,等.天然气管道泄漏扩散实时计算与爆燃危害预测研究[J].压力容器,2010(10):21-28.LIU F J,LING Z W,KONG S,et al. Research on the real-time calculation of gas leakage and diffusion and hazards prediction of fire and explosion for nature gas pipeline[J]. Pressure Vessel Technology, 2010(10):21-28.
[10]张迪,黄力平,赵勇,等.地铁隧道电子与非电子雷管爆破振动信号的HHT对比分析[J].工程爆破,2016,22(1):18-23.ZHANG D, HUANG L P, ZHAO Y, et al.Comparative analysis of blasting vibration signal with detonator and non-digital detonator in metro tunnel based an HHT method[J]. Engineering Blasting,2016,22(1):18-23.