|本期目录/Table of Contents|

[1]王新,马贵阳,杨玉林,等.山谷地区埋地天然气管道泄漏三维数值模拟[J].中国安全生产科学技术,2015,11(1):46-51.[doi:10.11731/j.issn.1673-193x.2015.01.008]
　WANG Xin,MA Gui-yang,YANG Yu-lin,et al.3D numerical simulation on leakage of buried natural gas pipeline in valley area[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(1):46-51.[doi:10.11731/j.issn.1673-193x.2015.01.008]
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山谷地区埋地天然气管道泄漏三维数值模拟
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
11
期数:
2015年1期
页码:
46-51
栏目:
学术论著
出版日期:
2015-01-30

文章信息/Info

Title:
3D numerical simulation on leakage of buried natural gas pipeline in valley area
作者:
王新1; 马贵阳1; 杨玉林2; 刘伟3; 张月4
（1.辽宁石油化工大学 石油天然气工程学院， 辽宁抚顺113001；2.中国石油长庆油田分公司第一采气场， 陕西靖边718500；3.中国石油华北油田公司华盛综合服务处，河北任丘062552； 4.中国石油工程建设公司大连设计分公司，辽宁大连116011）
Author(s):
WANG Xin1;  MA Gui-yang1;  YANG Yu-lin2;  LIU Wei3;  ZHANG Yue4
(1. Academy of Petrol and Natural Gas Engineering, Liaoning Shihua University, Fushun Liaoning 113001, China; 2. The First Natural Gas Plant of PetroChina ChangQing Oil-field Constituent Company, Jingbian Shanxi 718500, China; 3. Huasheng Comprehensive Se
关键词:
天然气; 泄漏; 山谷; 危险区域; 数值模拟
Keywords:
natural gas;  leakage;  valley;  danger zone;  numerical simulation
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2015.01.008
文献标志码:
A
摘要:
针对山谷地区埋地天然气泄漏问题，建立三维泄漏模型，将管道模型建立于土壤下，给出山谷地区风随海拔高度变化边界条件，在此基础上对山谷地区高含硫天然气泄漏问题进行六组模拟。结果表明：六组工况下硫化氢的危险区域全部大于甲烷的危险区域，突显出天然气泄漏问题中硫化氢的危害性之大。风速对危险范围的影响很大，在山谷地形条件下危险范围大小与风速大小成反比，且风速越大，危险范围越小。三个泄漏口方向中漏口斜向上45°时空气中泄漏气体的总质量分数最大，扩散的范围最大，但部分范围内并未达到泄漏气体的危险浓度，危险范围比实际扩散范围要小，漏口斜向下45°时危险区域是最大的，漏口水平介于中间。
Abstract:
Aiming at the problems in leakage and dispersion of buried gas pipeline in valley area, a three-dimensional leakage mode was established with building the pipeline model under the soil. The boundary conditions of wind changes with altitude in the valley area were given, on this basis, 6 sets of simulation were made on leakage of natural gas with high hydrogen sulfide in the valley area. The results showed that: the danger zones of hydrogen sulfide are all greater than those of methane in the 6 sets of conditions, which highlighted the dangers of hydrogen sulfide in natural gas leakage problem. Wind speed has much effect on the danger range, under the condition of valley terrain, the size of danger range is inversely proportional to wind speed, the larger the wind speed, the smaller the risk. In the three directions of leakage hole, when the direction of leakage hole is 45° oblique to upward, the total mass fraction of leaking gas in the air is the maximum, and the diffusion range is the largest, but in some range, it does not reach the dangerous concentration of leaking gas, and the danger range is smaller than the practical diffusion range. When the direction of leakage hole is 45° oblique to downward, the dangerous zone is the largest. And when the direction of leakage hole is horizontal, it is lying in the medium.

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备注/Memo

备注/Memo:
辽宁省自然科学基金项目（201102118）
更新日期/Last Update: 2015-02-03