Article(id=1221507469776437551, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221507468635586855, articleNumber=null, orderNo=null, doi=10.19666/j.rlfd.202210268, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1667145600000, receivedDateStr=2022-10-31, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1769159675306, onlineDateStr=2026-01-23, pubDate=1687622400000, pubDateStr=2023-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769159675306, onlineIssueDateStr=2026-01-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769159675306, creator=13701087609, updateTime=1769159675306, updator=13701087609, issue=Issue{id=1221507468635586855, tenantId=1146029695717560320, journalId=1210938733613449225, year='2023', volume='52', issue='6', pageStart='1', pageEnd='172', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769159675034, creator=13701087609, updateTime=1769166411362, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1221535722931216843, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221507468635586855, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1221535722931216844, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221507468635586855, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=63, endPage=72, ext={EN=ArticleExt(id=1221507470015512886, articleId=1221507469776437551, tenantId=1146029695717560320, journalId=1210938733613449225, language=EN, title=Analysis of real gas and turbulence effect of supercritical carbon dioxide dry gas seal, columnId=1221507469394755881, journalTitle=Thermal Power Generation, columnName=Fundamental research on fluid characteristics of S-CO2 cycle, runingTitle=null, highlight=null, articleAbstract=

The effects of real gas and turbulence have a great influence on the performance of supercritical carbon dioxide (S-CO2) dry gas seal. A typical spiral groove dry gas seal calculation model is established, and the flow equation on the end face of supercritical carbon dioxide dry gas seal is solved by CFD software to obtain the flow state of fluid between the seal slots. The influence of real gas and turbulence effects on opening force and leakage are investigated under different rotational speed. The results show that both real gas and turbulence effects make the pressure distribution of the gas film change significantly. The real gas effect improves the opening force and leakage of gas film, and the strengthening effect on the opening force becomes stronger with the increase of the rotational speed, while the effect on the leakage almost does not change with the rotational speed. At low rotational speed, the turbulence effect has a weak effect on the opening force. With the increase of rotational speed, the opening force increases sharply due to the turbulence effect, and the increase increases with the increase of rotational speed. In the high speed S-CO2 dry gas seal, the combined effect of real gas and turbulence effect makes the opening force of gas film increase significantly, and the turbulence effect is greater than the real gas effect.

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实际气体效应和湍流效应对超临界二氧化碳(S-CO2)干气密封性能影响很大。建立了典型的螺旋槽干气密封计算模型,采用CFD软件求解S-CO2干气密封端面流动方程,获取流体在密封槽间隙间的流动状态,研究了不同转速下实际气体效应和湍流效应对密封性能的影响。结果表明:实际气体效应和湍流效应使气膜端面压力分布发生显著变化;实际气体效应会提高气膜开启力和泄漏量,对开启力的增强作用随转速增大而变强,但对泄漏量的影响程度几乎不随转速变化;低转速时,湍流效应对开启力影响微弱,随着转速增大,湍流效应使得开启力急剧增大,且增幅随转速增大而增大;在高转速S-CO2干气密封中,实际气体效应和湍流效应的共同作用使得气膜端面的开启力显著提高,且湍流效应的影响程度大于实际气体效应。

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韩煜航(1998),男,硕士研究生,主要研究方向为超临界二氧化碳干气密封,

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韩煜航(1998),男,硕士研究生,主要研究方向为超临界二氧化碳干气密封,

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韩煜航(1998),男,硕士研究生,主要研究方向为超临界二氧化碳干气密封,

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超临界二氧化碳干气密封实际气体效应和湍流效应分析
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韩煜航 , 李红智 , 张一帆 , 杨玉 , 李凯伦
热力发电 | 超临界二氧化碳循环工质特性基础研究 2023,52(6): 63-72
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热力发电 | 超临界二氧化碳循环工质特性基础研究 2023, 52(6): 63-72
超临界二氧化碳干气密封实际气体效应和湍流效应分析
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韩煜航 , 李红智, 张一帆, 杨玉, 李凯伦
作者信息
  • 西安热工研究院有限公司,陕西 西安 710054
  • 韩煜航(1998),男,硕士研究生,主要研究方向为超临界二氧化碳干气密封,

Analysis of real gas and turbulence effect of supercritical carbon dioxide dry gas seal
Yuhang HAN , Hongzhi LI, Yifan ZHANG, Yu YANG, Kailun LI
Affiliations
  • Xi'an Thermal Engineering Research Institute Co, Ltd, Xi'an 710054, China
出版时间: 2023-06-25 doi: 10.19666/j.rlfd.202210268
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实际气体效应和湍流效应对超临界二氧化碳(S-CO2)干气密封性能影响很大。建立了典型的螺旋槽干气密封计算模型,采用CFD软件求解S-CO2干气密封端面流动方程,获取流体在密封槽间隙间的流动状态,研究了不同转速下实际气体效应和湍流效应对密封性能的影响。结果表明:实际气体效应和湍流效应使气膜端面压力分布发生显著变化;实际气体效应会提高气膜开启力和泄漏量,对开启力的增强作用随转速增大而变强,但对泄漏量的影响程度几乎不随转速变化;低转速时,湍流效应对开启力影响微弱,随着转速增大,湍流效应使得开启力急剧增大,且增幅随转速增大而增大;在高转速S-CO2干气密封中,实际气体效应和湍流效应的共同作用使得气膜端面的开启力显著提高,且湍流效应的影响程度大于实际气体效应。

超临界二氧化碳  /  干气密封  /  实际气体效应  /  湍流效应

The effects of real gas and turbulence have a great influence on the performance of supercritical carbon dioxide (S-CO2) dry gas seal. A typical spiral groove dry gas seal calculation model is established, and the flow equation on the end face of supercritical carbon dioxide dry gas seal is solved by CFD software to obtain the flow state of fluid between the seal slots. The influence of real gas and turbulence effects on opening force and leakage are investigated under different rotational speed. The results show that both real gas and turbulence effects make the pressure distribution of the gas film change significantly. The real gas effect improves the opening force and leakage of gas film, and the strengthening effect on the opening force becomes stronger with the increase of the rotational speed, while the effect on the leakage almost does not change with the rotational speed. At low rotational speed, the turbulence effect has a weak effect on the opening force. With the increase of rotational speed, the opening force increases sharply due to the turbulence effect, and the increase increases with the increase of rotational speed. In the high speed S-CO2 dry gas seal, the combined effect of real gas and turbulence effect makes the opening force of gas film increase significantly, and the turbulence effect is greater than the real gas effect.

supercritical carbon dioxide  /  dry gas seal  /  real gas effect  /  turbulence effect
韩煜航, 李红智, 张一帆, 杨玉, 李凯伦. 超临界二氧化碳干气密封实际气体效应和湍流效应分析. 热力发电, 2023 , 52 (6) : 63 -72 . DOI: 10.19666/j.rlfd.202210268
Yuhang HAN, Hongzhi LI, Yifan ZHANG, Yu YANG, Kailun LI. Analysis of real gas and turbulence effect of supercritical carbon dioxide dry gas seal[J]. Thermal Power Generation, 2023 , 52 (6) : 63 -72 . DOI: 10.19666/j.rlfd.202210268
  • 国家重点研发计划项目(2018YFB1501004)
2023年第52卷第6期
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doi: 10.19666/j.rlfd.202210268
  • 接收时间:2022-10-31
  • 首发时间:2026-01-23
  • 出版时间:2023-06-25
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  • 收稿日期:2022-10-31
基金
National Key Research and Development Program(2018YFB1501004)
国家重点研发计划项目(2018YFB1501004)
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    西安热工研究院有限公司,陕西 西安 710054
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2种不同金属材料的力学参数

Family
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Number of
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种数
Number of
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占总种数比例
Percentage of
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Genus
种数
Number of
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占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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