Article(id=1149739132831838618, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149739129056969102, articleNumber=1003-3033(2024)03-0063-07, orderNo=null, doi=10.16265/j.cnki.issn1003-3033.2024.03.1904, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1695744000000, receivedDateStr=2023-09-27, revisedDate=1702224000000, revisedDateStr=2023-12-11, acceptedDate=null, acceptedDateStr=null, onlineDate=1752048770387, onlineDateStr=2025-07-09, pubDate=1711555200000, pubDateStr=2024-03-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752048770387, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752048770387, creator=13701087609, updateTime=1752048770387, updator=13701087609, issue=Issue{id=1149739129056969102, tenantId=1146029695717560320, journalId=1146031787341344770, year='2024', volume='34', issue='3', pageStart='1', pageEnd='252', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752048769486, creator=13701087609, updateTime=1756468931593, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1168278632783950282, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149739129056969102, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1168278632783950283, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149739129056969102, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=63, endPage=69, ext={EN=ArticleExt(id=1149739133163188638, articleId=1149739132831838618, tenantId=1146029695717560320, journalId=1146031787341344770, language=EN, title=Numerical simulation of leakage and diffusion in buried hydrogen-blended natural gas pipeline, columnId=1149733269173878863, journalTitle=China Safety Science Journal, columnName=Safety engineering technology, runingTitle=null, highlight=null, articleAbstract=
In order to reduce the safety problems caused by leakage of hydrogen-blended natural gas during the distribution,based on fluid mechanics and porous media theory,a three-dimensional numerical model of leakage and diffusion of urban buried hydrogen-blended natural gas pipeline was established by Fluent software. The effects of hydrogen blending ratio,leakage aperture,pipeline pressure,pipeline buried depth and soil type on the leakage of hydrogen-blended natural gas and the vertical diffusion distance of the lower explosion limit of methane and hydrogen were analyzed. The results show that the larger the proportion of hydrogen blending,the smaller the leakage of hydrogen-blended natural gas,and the longer the time it takes for the methane explosion lower limit contour to diffuse to the surface,while the opposite is true for hydrogen. Secondly,the leakage amount is about twice as much as 5 mm when the leakage aperture is 10 mm. The leakage amount is about twice as much as 10 mm when the leakage aperture is 20 mm. The larger the leakage aperture,the shorter the time required for the lower explosion limit of methane and hydrogen to reach the surface. Thirdly,the greater the pipeline pressure,the greater the leakage of hydrogen-blended natural gas and the faster the diffusion speed,and the higher the risk coefficient. Besides,when the buried depth of the pipeline is 1.1m,the leakage is largest,followed by 1.4 m and 0.8 m. The shallower the buried depth,the shorter the time required for the lower explosion limit of methane and hydrogen to reach the surface. Finally,the soil type has an important influence on the leakage and diffusion of hydrogen-blended natural gas. When the soil type is silty sand,the leakage and diffusion rate of hydrogen-blended natural gas are the largest,followed by loam and finally clay.
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为减少掺氢天然气在输送过程中因泄漏引发的安全问题,基于流体力学及多孔介质理论,采用Fluent软件建立城市埋地掺氢天然气管道泄漏扩散的三维数值模型,分析掺氢比例、泄漏孔径、管道压力、管道埋深和土壤类型等因素对掺氢天然气泄漏量及甲烷、氢气爆炸下限竖直方向上扩散距离的影响。结果表明:掺氢比例越大,掺氢天然气泄漏量越小,甲烷爆炸下限等值线扩散至地表所需时间越长,而氢气则相反;泄漏孔径10 mm时的泄漏量约为孔径5 mm时泄漏量的2倍,泄漏孔径20 mm时的泄漏量约为10 mm时泄漏量的2倍,且泄漏孔径越大,甲烷和氢气的爆炸下限等值线到达地表所需时间越短;管道压力越大,掺氢天然气泄漏量越大且扩散速度越快,危险系数越高;管道埋深1.1 m泄漏量最大,其次为1.4、0.8 m,埋深越浅,甲烷和氢气的爆炸下限等值线到达地表所需时间越短;土壤类型对掺氢天然气的泄漏扩散有重要的影响,土壤类型为粉质砂土时,掺氢天然气泄漏量及扩散速度最大,其次为壤土,最后为黏土。
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1 School of Civil Engineering and Geomatics,Southwest Petroleum University,Chengdu Sichuan 610500,China
2 Sichuan Engineering Research Center for Gas Safety and High-Efficiency Utilization,Chengdu Sichuan 610500,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1168130433930768601, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, authorId=1168130433775579347, language=CN, stringName=彭善碧, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 西南石油大学 土木工程与测绘学院,四川 成都 610500
2 四川省燃气安全与高效利用工程技术研究中心,四川 成都 610500, bio={"content":"
彭善碧 (1980—),女,土家族,重庆人,硕士,教授,主要从事燃气负荷智能预测与燃气安全智能管控等方面的研究。E-mail:shanbipeng@swpu.edu.cn。
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彭善碧 (1980—),女,土家族,重庆人,硕士,教授,主要从事燃气负荷智能预测与燃气安全智能管控等方面的研究。E-mail:shanbipeng@swpu.edu.cn。
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1 School of Civil Engineering and Geomatics,Southwest Petroleum University,Chengdu Sichuan 610500,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1168130434132095203, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, authorId=1168130434002071774, language=CN, stringName=罗雪, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 西南石油大学 土木工程与测绘学院,四川 成都 610500, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1168130433603612872, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, xref=1, ext=[AuthorCompanyExt(id=1168130433612001481, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, companyId=1168130433603612872, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1 西南石油大学 土木工程与测绘学院,四川 成都 610500)])])], keywords=[Keyword(id=1168130434295673064, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, orderNo=1, keyword=hydrogen-blended natural gas), Keyword(id=1168130434354393322, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, orderNo=2, keyword=pipeline), Keyword(id=1168130434438279403, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, orderNo=3, keyword=leakage and diffusion), Keyword(id=1168130434496999661, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, orderNo=4, keyword=numerical simulation), Keyword(id=1168130434572497135, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, orderNo=5, keyword=leakage amount), Keyword(id=1168130434635411697, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, orderNo=6, keyword=diffusion distance), Keyword(id=1168130434731880691, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, orderNo=1, keyword=掺氢天然气), Keyword(id=1168130434815766771, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, orderNo=2, keyword=管道), Keyword(id=1168130434882875636, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, orderNo=3, keyword=泄漏扩散), Keyword(id=1168130434979344630, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, orderNo=4, keyword=数值模拟), Keyword(id=1168130435067425017, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, orderNo=5, keyword=泄漏量), Keyword(id=1168130435142922489, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, orderNo=6, keyword=扩散距离)], refs=[Reference(id=1168130437823082794, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, doi=null, pmid=null, pmcid=null, year=2019, volume=null, issue=7, pageStart=40, pageEnd=43, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=李承明, journalName=西部大开发, refType=null, unstructuredReference=李承明. 氢能改变未来[J].
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2 Sichuan Engineering Research Center for Gas Safety and High-Efficiency Utilization,Chengdu Sichuan 610500,China), AuthorCompanyExt(id=1168130433704276174, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, companyId=1168130433691693260, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 四川省燃气安全与高效利用工程技术研究中心,四川 成都 610500)])], figs=[ArticleFig(id=1168130435306500349, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.1, caption=
Physical model of leakage and diffusion of buried hydrogen-blended natural gas pipeline, figureFileSmall=dqhTX/Ur0hHU+rntgq/yjA==, figureFileBig=0zX142YgHWlW7cRXQjtv3w==, tableContent=null), ArticleFig(id=1168130435398775039, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图1, caption=
埋地掺氢天然气管道泄漏扩散物理模型, figureFileSmall=dqhTX/Ur0hHU+rntgq/yjA==, figureFileBig=0zX142YgHWlW7cRXQjtv3w==, tableContent=null), ArticleFig(id=1168130435486855424, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.2, caption=
Grid independence verification, figureFileSmall=7DBzWTksnmIfDtwZWmQDSw==, figureFileBig=DlvV/mhV0cEE58y3LDNGsA==, tableContent=null), ArticleFig(id=1168130435562352898, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图2, caption=
网格无关性验证, figureFileSmall=7DBzWTksnmIfDtwZWmQDSw==, figureFileBig=DlvV/mhV0cEE58y3LDNGsA==, tableContent=null), ArticleFig(id=1168130435642044675, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.3, caption=
Effect of hydrogen blending ratio on leakage rate (leakage time 3 600 s), figureFileSmall=FSqbsKV1ZlbUq7+k1d7X8g==, figureFileBig=DzHTcAOWwSARY7JxbbgYXg==, tableContent=null), ArticleFig(id=1168130435709153540, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图3, caption=
掺氢比例对泄漏量的影响(泄漏时间3 600 s), figureFileSmall=FSqbsKV1ZlbUq7+k1d7X8g==, figureFileBig=DzHTcAOWwSARY7JxbbgYXg==, tableContent=null), ArticleFig(id=1168130435809816838, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.4, caption=
Vertical diffusion distance of lower explosion limit under different hydrogen blending ratios, figureFileSmall=ESF3AGNxPt1uKKqUvbSm+g==, figureFileBig=fP9eoR8W4vR70kVAc5N5WA==, tableContent=null), ArticleFig(id=1168130435923063048, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图4, caption=
不同掺氢比例下爆炸下限竖直方向扩散距离, figureFileSmall=ESF3AGNxPt1uKKqUvbSm+g==, figureFileBig=fP9eoR8W4vR70kVAc5N5WA==, tableContent=null), ArticleFig(id=1168130436069863690, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.5, caption=
Effect of leakage hole diameter on leakage rate (leakage time 3 600 s), figureFileSmall=nDLa6oPOKg2qqbNlLsWBwA==, figureFileBig=eD1WXXMNrn/YgcEOuznYjQ==, tableContent=null), ArticleFig(id=1168130436241830156, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图5, caption=
泄漏孔径对泄漏量的影响(泄漏时间3 600 s), figureFileSmall=nDLa6oPOKg2qqbNlLsWBwA==, figureFileBig=eD1WXXMNrn/YgcEOuznYjQ==, tableContent=null), ArticleFig(id=1168130436338299149, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.6, caption=
Vertical diffusion distance of lower explosion limit under different leakage hole diameters, figureFileSmall=rANustV0JcsQwxj/P8JXxA==, figureFileBig=yAnjE2F1ua+fRfprCUtoZA==, tableContent=null), ArticleFig(id=1168130436430573839, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图6, caption=
不同泄漏孔径下爆炸下限竖直方向扩散距离, figureFileSmall=rANustV0JcsQwxj/P8JXxA==, figureFileBig=yAnjE2F1ua+fRfprCUtoZA==, tableContent=null), ArticleFig(id=1168130436510265616, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.7, caption=
Effect of pipeline pressure on leakage rate (leakage time 3 600 s), figureFileSmall=u0i7Z+npU9H3GL10aGMtUg==, figureFileBig=ORDrZp5+ULFnQMtNVPH+nA==, tableContent=null), ArticleFig(id=1168130436598346002, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图7, caption=
管道压力对泄漏量的影响(泄漏时间3 600 s), figureFileSmall=u0i7Z+npU9H3GL10aGMtUg==, figureFileBig=ORDrZp5+ULFnQMtNVPH+nA==, tableContent=null), ArticleFig(id=1168130436707397908, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.8, caption=
Vertical diffusion distance of lower explosion limit under different pipeline pressures, figureFileSmall=Z136yC2cfByWA7Zd2jS2SA==, figureFileBig=CRlpBqnoxxyXLkZ2oHgTOA==, tableContent=null), ArticleFig(id=1168130436808061206, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图8, caption=
不同管道压力下爆炸下限竖直方向扩散距离, figureFileSmall=Z136yC2cfByWA7Zd2jS2SA==, figureFileBig=CRlpBqnoxxyXLkZ2oHgTOA==, tableContent=null), ArticleFig(id=1168130436908724504, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.9, caption=
Effect of pipeline buried depth on leakage rate (leakage time 3 600 s), figureFileSmall=RhDPw58hSl/h3A5hPeyklA==, figureFileBig=0HnGH8e8I7npQE73HRvlcg==, tableContent=null), ArticleFig(id=1168130436963250458, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图9, caption=
管道埋深对泄漏量的影响(泄漏时间3 600 s), figureFileSmall=RhDPw58hSl/h3A5hPeyklA==, figureFileBig=0HnGH8e8I7npQE73HRvlcg==, tableContent=null), ArticleFig(id=1168130437068108060, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.10, caption=
Vertical diffusion distance of lower explosion limit under different buried depths of pipeline, figureFileSmall=2gIu6wIhKhpLq0PsgvNTZg==, figureFileBig=8Z9KSHcoXw3glfFb+SY3zA==, tableContent=null), ArticleFig(id=1168130437156188445, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图10, caption=
不同管道埋深下爆炸下限竖直方向扩散距离, figureFileSmall=2gIu6wIhKhpLq0PsgvNTZg==, figureFileBig=8Z9KSHcoXw3glfFb+SY3zA==, tableContent=null), ArticleFig(id=1168130437214908702, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Fig.11, caption=
Vertical diffusion distance of lower explosion limit under different soil types, figureFileSmall=oX2RUCd5OKner5Q1PGn18A==, figureFileBig=d9i2ktzuQ+n6LY1Tr2Ys+g==, tableContent=null), ArticleFig(id=1168130437294600479, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=图11, caption=
不同土壤类型下爆炸下限竖直方向扩散距离, figureFileSmall=oX2RUCd5OKner5Q1PGn18A==, figureFileBig=d9i2ktzuQ+n6LY1Tr2Ys+g==, tableContent=null), ArticleFig(id=1168130437382680865, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Tab.1, caption=
Leakage and diffusion simulation of buried hydrogen-blended natural gas pipeline
, figureFileSmall=null, figureFileBig=null, tableContent=
| 案例 | 掺氢比 例/% | 泄漏孔 径/mm | 管道压 力/MPa | 管道埋 深/m | 土壤 类型 |
| 1 | 0 | 10 | 0.4 | 1.4 | 壤土 |
| 2 | 10 | 10 | 0.4 | 1.4 | 壤土 |
| 3 | 20 | 10 | 0.4 | 1.4 | 壤土 |
| 4 | 10 | 5 | 0.4 | 1.4 | 壤土 |
| 5 | 10 | 20 | 0.4 | 1.4 | 壤土 |
| 6 | 10 | 10 | 0.2 | 1.4 | 壤土 |
| 7 | 10 | 10 | 0.3 | 1.4 | 壤土 |
| 8 | 10 | 10 | 0.4 | 0.8 | 壤土 |
| 9 | 10 | 10 | 0.4 | 1.1 | 壤土 |
| 10 | 10 | 10 | 0.4 | 1.4 | 粉质砂土 |
| 11 | 10 | 10 | 0.4 | 1.4 | 黏土 |
), ArticleFig(id=1168130437504315683, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=表1, caption=
埋地掺氢天然气管道泄漏扩散模拟工况
, figureFileSmall=null, figureFileBig=null, tableContent=
| 案例 | 掺氢比 例/% | 泄漏孔 径/mm | 管道压 力/MPa | 管道埋 深/m | 土壤 类型 |
| 1 | 0 | 10 | 0.4 | 1.4 | 壤土 |
| 2 | 10 | 10 | 0.4 | 1.4 | 壤土 |
| 3 | 20 | 10 | 0.4 | 1.4 | 壤土 |
| 4 | 10 | 5 | 0.4 | 1.4 | 壤土 |
| 5 | 10 | 20 | 0.4 | 1.4 | 壤土 |
| 6 | 10 | 10 | 0.2 | 1.4 | 壤土 |
| 7 | 10 | 10 | 0.3 | 1.4 | 壤土 |
| 8 | 10 | 10 | 0.4 | 0.8 | 壤土 |
| 9 | 10 | 10 | 0.4 | 1.1 | 壤土 |
| 10 | 10 | 10 | 0.4 | 1.4 | 粉质砂土 |
| 11 | 10 | 10 | 0.4 | 1.4 | 黏土 |
), ArticleFig(id=1168130437588201765, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=EN, label=Tab.2, caption=
Soil parameters and resistance coefficients
, figureFileSmall=null, figureFileBig=null, tableContent=
土壤 类别 | 平均颗粒 直径/mm | 孔隙 率 | 黏性阻力 系数/m-2 | 惯性阻力 系数/m-1 |
| 粉质砂土 | 0.50 | 0.25 | 2.16×1010 | 3.36×105 |
| 黏土 | 0.01 | 0.30 | 2.72×1013 | 9.07×106 |
| 壤土 | 0.05 | 0.43 | 2.45×1011 | 5.02×105 |
), ArticleFig(id=1168130437680476455, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739132831838618, language=CN, label=表2, caption=
土壤参数和阻力系数
, figureFileSmall=null, figureFileBig=null, tableContent=
土壤 类别 | 平均颗粒 直径/mm | 孔隙 率 | 黏性阻力 系数/m-2 | 惯性阻力 系数/m-1 |
| 粉质砂土 | 0.50 | 0.25 | 2.16×1010 | 3.36×105 |
| 黏土 | 0.01 | 0.30 | 2.72×1013 | 9.07×106 |
| 壤土 | 0.05 | 0.43 | 2.45×1011 | 5.02×105 |
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