天然气管道爆破对同沟敷设管道的影响试验
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摘要
为了分析天然气管道爆破对同沟敷设管道性能的影响,利用管道断裂控制试验场开展了X90全尺寸气体爆破试验,分析管道爆破对同沟敷设管道变形行为、管材性能的影响。研究表明:天然气管道爆破会引起同沟敷设管道发生明显的弯曲、压扁变形,且变形管段中间部位的椭圆度较大;在热辐射作用下,钢管的性能发生了明显变化,裂纹的扩展抗力降低,且随着壁厚增大,显微硬度呈先升高再降低的趋势,受热层厚度约为700μm;热辐射能显著影响钢管的微观组织,受热部位表面组织晶粒发生一定的粗化,失去了原有生长取向,而深层组织的变化较小。
In order to study the influence of pipeline blasting on the performance of the pipelines laid in the same ditch,X90 full-scale gas blasting test was carried out based on the pipeline cracking control test field. In this test, the influence of pipeline blasting on the deformation behaviors and material properties of the pipelines laid in the same ditch was analyzed. It is shown that the blasting of natural gas pipeline can lead to bending deformation and flattening deformation of the pipelines laid in the same ditch, and the ovality is higher in middle section of the pipeline. Under the effect of heat radiation, the performance of the steel pipelines changes significantly. The propagation resistance of cracks decreases, the microhardness rises first and then decreases with the increasing of wall thickness, and the thickness of the heated layer is about 700 μm.Heat radiation can change the microstructure of steel pipes obviously. The crystalline grains in the surface structure of heated position get coarse, the original growth orientation changes, and the structure in the deep part changes less.
In order to study the influence of pipeline blasting on the performance of the pipelines laid in the same ditch,X90 full-scale gas blasting test was carried out based on the pipeline cracking control test field. In this test, the influence of pipeline blasting on the deformation behaviors and material properties of the pipelines laid in the same ditch was analyzed. It is shown that the blasting of natural gas pipeline can lead to bending deformation and flattening deformation of the pipelines laid in the same ditch, and the ovality is higher in middle section of the pipeline. Under the effect of heat radiation, the performance of the steel pipelines changes significantly. The propagation resistance of cracks decreases, the microhardness rises first and then decreases with the increasing of wall thickness, and the thickness of the heated layer is about 700 μm.Heat radiation can change the microstructure of steel pipes obviously. The crystalline grains in the surface structure of heated position get coarse, the original growth orientation changes, and the structure in the deep part changes less.
引文
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[19]帅义,帅健,狄彦.含凹陷管道全尺寸爆破试验[J].油气储运,2017,36(1):44-48.SHUAI Y,SHUAI J,DI Y.Full-scale burst experiments on dented pipeline[J].Oil&Gas Storage&Transportation,2017,36(1):44-48.
[20]曹永利,姚登樽,苏鑫,等.X80管线钢管体缺陷极限承载能力[J].油气储运,2017,36(12):1361-1367.CAO Y L,YAO D Z,SU X,et al.The ultimate bearing capacity of defects in X80 pipeline steel[J].Oil&Gas Storage and Transportation,2017,36(12):1361-1367.
[21]吉玲康,霍春勇,李鹤.我国高压长输天然气管道的断裂控制[J].石油管材与仪器,2016,2(6):1-10.JI L K,HUO C Y,LI H.Fracture control for high pressure natural gas pipeline with long distance in China[J].Petroleum Tubular Goods&Instruments,2016,2(6):1-10.
[2]MELIANI M H,MATVIENKO Y G,LUVINAGE G.Corrosion defect assessment on pipes using limit analysis and notch fracture mechanics[J].Engineering Failure Analysis,2011,8(1):271-283.
[3]CHOI J B,GOO B K,KIM J C,et al.Development of limit load solutions for corroded gas pipelines[J].International Journal of Pressure Vessels and Piping,2003,80(2):121-128.
[4]TENG T L,CHANG P H.A study of residual stresses in multipass girth-butt welded pipes[J].International Journal of Pressure Vessels and Piping,1997,74(1):59-70.
[5]向波.并行管道安全间距及保护措施研究[J].天然气与石油,2009,27(3):1-3.XIANG B.Research on the safety distance and protected ways for parallel pipeline[J].Natural Gas and Oil,2009,27(3):1-3.
[6]许砚新,马学海,庞宝华,等.天然气管道与原油管道并行敷设的安全间距[J].油气储运,2011,30(11):816-818.XU Y X,MA X H,PANG B H,et al.Determination of safety distance for parallelly laid natural gas/oil pipelines[J].Oil&Gas Storage and Transportation,2011,30(11):816-818.
[7]罗忆,卢文波,陈明,等.爆破振动安全判据研究综述[J].爆破,2010,27(1):14-21.LUO Y,LU W B,CHEN M,et al.View of research on safety criterion of blasting vibration[J].Blasting,2010,27(1):14-21.
[8]田娜,陈保东,何利民,等.同沟敷设原油、成品油管道稳态温度场解析公式[J].油气储运,2012,31(2):103-105.TIAN N,CHEN B D,HE L M,et al.Analytic formula of steady-state temperature field for the oil pipeline and refined oil product pipeline laid in one ditch[J].Oil&Gas Storage and Transportation,2012,31(2):103-105.
[9]李鹤,王海涛,黄呈帅,等.高钢级管线焊管全尺寸气体爆破试验研究[J].压力容器,2013,30(8):21-26.LI H,WANG H T,HANG C S,et al.Full-scale burst test studies for high grade pipeline weld pipe[J].Pressure Vessel Technology,2013,30(8):21-26.
[10]BATAEV I A,BATAEV A A,MALI V I,et a1.Structural and mechanical properties of metallic-intermetallic laminate composite produced by explosive welding and annealing[J].Materials and Design,2012,35(30):225-234.
[11]FINDIK F.Recent development in explosive welding[J].Material and Design,2011,32(3):1081-1093.
[12]张雪夫.同沟敷设中油气管道的强度分析[J].浙江海洋学院学报(自然科学版),2013,32(3):265-269.ZHANG X F.Oil and gas pipeline laying in one ditch on the pipeline strength requirements[J].Journal of Zhejiang Ocean University(Natural Science),2013,32(3):265-269.
[13]谢斐,赵胜秋,李旺,等.埋地输油管道同沟敷设热应力分析[J].辽宁石油化工大学学报,2014,34(1):47-51.XIE F,ZHAO S Q,LI W,et al.The thermal stress of two pipelines in one ditch[J].Journal of Liaoning Shihua University,2014,34(1):47-51.
[14]张景华,刘钟阳.露天采矿爆破对中缅油气管道振动的影响试验[J].油气储运,2018,37(7):816-821.ZHANG J H,LIU Z Y.Experiment on the blasting vibration effects of open-pit mining on China-Myanmar oil and gas pipeline[J].Oil&Gas Storage and Transportation,2018,37(7):816-821.
[15]许彦,刘迎来,聂向晖,等.小口径薄壁钢管爆破压力预测[J].油气储运,2017,36(11):1265-1269.XU Y,LIU Y L,NIE X H,et al.Prediction on the burst pressure of small diameter and thin wall steel pipe[J].Oil&Gas Storage and Transportation,2017,36(11):1265-1269.
[16]宇波,凌霄,张劲军,等.成品油管道与热原油管道同沟敷设技术研究[J].石油学报,2007,28(5):149-152.YU B,LING X,ZHANG J J,et al.Study on laying technology of products pipeline along with hot crude pipeline in one ditch[J].Acta Petrolei Sinica,2007,28(5):149-152.
[17]王雷振,敬加强,沈晓燕,等.同沟敷设输油管道热力计算[J].管道技术与设备,2015(3):4-6.WANG L Z,JING J Q,SHEN X Y,et al.Thermal calculation of double oil pipelines laid in one ditch[J].Pipeline Technique and Equipment,2015(3):4-6.
[18]金乘武,王立忠,张永强.薄壁管道爆破压力的强度差异效应与强度准则影响[J].应用数学和力学,2012,33(11):1266-1274.JIN C W,WANG L Z,ZHANG Y Q.Strength differential effect and influence of strength criterion on burst pressure of thin-walled pipelines[J].Applied Mathematics and Mechanics,2012,33(11):1266-1274.
[19]帅义,帅健,狄彦.含凹陷管道全尺寸爆破试验[J].油气储运,2017,36(1):44-48.SHUAI Y,SHUAI J,DI Y.Full-scale burst experiments on dented pipeline[J].Oil&Gas Storage&Transportation,2017,36(1):44-48.
[20]曹永利,姚登樽,苏鑫,等.X80管线钢管体缺陷极限承载能力[J].油气储运,2017,36(12):1361-1367.CAO Y L,YAO D Z,SU X,et al.The ultimate bearing capacity of defects in X80 pipeline steel[J].Oil&Gas Storage and Transportation,2017,36(12):1361-1367.
[21]吉玲康,霍春勇,李鹤.我国高压长输天然气管道的断裂控制[J].石油管材与仪器,2016,2(6):1-10.JI L K,HUO C Y,LI H.Fracture control for high pressure natural gas pipeline with long distance in China[J].Petroleum Tubular Goods&Instruments,2016,2(6):1-10.