Article(id=1215700882323325459, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1215700878661702357, articleNumber=null, orderNo=null, doi=10.19666/j.rlfd.202401021, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1705593600000, receivedDateStr=2024-01-19, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1767775276976, onlineDateStr=2026-01-07, pubDate=1719244800000, pubDateStr=2024-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1767775276976, onlineIssueDateStr=2026-01-07, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1767775276976, creator=13701087609, updateTime=1767775276976, updator=13701087609, issue=Issue{id=1215700878661702357, tenantId=1146029695717560320, journalId=1210938733613449225, year='2024', volume='53', issue='6', pageStart='1', pageEnd='150', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1767775276102, creator=13701087609, updateTime=1767775427616, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1215701514199417515, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1215700878661702357, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1215701514199417516, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1215700878661702357, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=65, endPage=78, ext={EN=ArticleExt(id=1215700883690668597, articleId=1215700882323325459, tenantId=1146029695717560320, journalId=1210938733613449225, language=EN, title=Operating characteristics and optimization mechanism of the final stage of steam turbine under ultra-low load conditions, columnId=1211002405299294959, journalTitle=Thermal Power Generation, columnName=Thermal energy science research, runingTitle=null, highlight=null, articleAbstract=
Constructing a power system predominantly based on renewable energy sources imposes increasingly stringent demands on deep peak shaving capability and ultra-low-load operation of coal-fired power generating units, thereby presents more severe challenges to the safe operation of steam turbine units under low-load conditions. This paper employs numerical simulation methods, focusing on an in-depth analysis of the operational performance of the last stage of a steam turbine under low-load conditions, and explores various solutions for their working mechanisms and optimization effects under ultra-low-load conditions. It is found that, when the unit transitions from medium-low load to ultra-low load, vortex clusters such as gap vortices, backflow vortices, and separation vortices emerge near the last stage blades, with their extent gradually expanding as the load decreases. Reducing the back pressure of the unit and operating the low-pressure cylinder with cylinder-cutting are effective strategies to attenuate steam turbine vortex flow and enhance the last stage’s performance, with a combined application of these strategies yielding better results. For instance, under 20% turbine heat acceptance (THA) conditions, reducing the back pressure from 4.9 kPa to 2.5 kPa significantly diminishes the influence range of the last stage vortex cluster, increasing the rotor blade torque from −38 N·m to 73 N·m, thereby markedly improves the last stage performance. Under 10% THA conditions, employing a combination of reduced back pressure and low-pressure cylinder-cutting can completely eliminate the tip clearance vortex, with the radial lengths of the backflow vortices and separation vortices reducing by more than 50%. The optimized rotor blade torque increases by approximately 130 N·m, significantly enhancing the last stage performance.
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构建以新能源为主体的新型电力系统,对燃煤发电机组深度调峰和超低负荷运行提出了越来越严苛的要求,进而对汽轮机组低负荷安全运行提出了越来越严峻的挑战。采用数值模拟方法,基于低负荷工况下汽轮机末级运行性能的深入分析,着重研究探索了不同解决方案在超低负荷工况下的工作机理与优化效果。研究发现,当机组从中低负荷下降到超低负荷时,末级叶片附近出现间隙涡、回流涡和分离涡等涡群,其范围随着负荷的减小逐渐扩大。低负荷工况降低机组背压和低压缸切缸运行是弱化汽轮机涡流、提高末级性能的有效途径,二者结合使用效果更佳。例如,在20%热耗率验收(THA)工况条件下,将背压从4.9 kPa降低到2.5 kPa,使得末级涡群影响范围明显减小,转子叶片转矩从–38 N·m增加到73 N·m,末级运行性能明显改善。在10%THA工况下,采用降低背压和低压缸切缸相结合可使叶顶间隙涡完全消失,回流涡和分离涡的径向长度都减小50%以上;优化后的动叶转矩增加了约130 N·m,末级运行性能改善效果显著。
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, authorsList=彭世亮, 王卫良, 吕俊复, 柯希玮, 刘志东, 马庆中)}, authors=[Author(id=1215700889583665996, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=shiliangpeng2021@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1215700889675940690, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700889583665996, language=EN, stringName=Shiliang PENG, firstName=Shiliang, middleName=null, lastName=PENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.MOE Key Lab of Disaster and Control in Engineering, International Energy College (Energy and Electricity Research Center), Jinan University, Zhuhai 519070, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1215700889759826774, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700889583665996, language=CN, stringName=彭世亮, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.暨南大学重大工程灾害与控制教育部重点实验室国际能源学院(能源电力研究中心),广东 珠海 519070, bio={"content":"
彭世亮(1998),男,硕士研究生,主要研究方向为深度调峰下汽轮机运行安全性的数值,shiliangpeng2021@163.com。
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彭世亮(1998),男,硕士研究生,主要研究方向为深度调峰下汽轮机运行安全性的数值,shiliangpeng2021@163.com。
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1.暨南大学重大工程灾害与控制教育部重点实验室国际能源学院(能源电力研究中心),广东 珠海 519070)])]), Author(id=1215700889881461596, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wangwl@jnu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1215700889965347682, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700889881461596, language=EN, stringName=Weiliang WANG, firstName=Weiliang, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.MOE Key Lab of Disaster and Control in Engineering, International Energy College (Energy and Electricity Research Center), Jinan University, Zhuhai 519070, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1215700890061816677, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700889881461596, language=CN, stringName=王卫良, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.暨南大学重大工程灾害与控制教育部重点实验室国际能源学院(能源电力研究中心),广东 珠海 519070, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1215700888975491878, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, xref=1., ext=[AuthorCompanyExt(id=1215700888979686184, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700888975491878, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.MOE Key Lab of Disaster and Control in Engineering, International Energy College (Energy and Electricity Research Center), Jinan University, Zhuhai 519070, China), AuthorCompanyExt(id=1215700888988074792, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700888975491878, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.暨南大学重大工程灾害与控制教育部重点实验室国际能源学院(能源电力研究中心),广东 珠海 519070)])]), Author(id=1215700890212811628, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1215700890296697714, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700890212811628, language=EN, stringName=Junfu LYU, firstName=Junfu, middleName=null, lastName=LYU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, address=
2.Key Laboratory of Thermal Science and Power Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
3.Shanxi Research Institute of Huairou Laboratory, Taiyuan 030006, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1215700890405749621, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700890212811628, language=CN, stringName=吕俊复, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, address=
2.清华大学热科学与动力工程教育部重点实验室,北京 100084
3.怀柔实验室山西研究院,山西 太原 030006, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1215700889080349486, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, xref=2., ext=[AuthorCompanyExt(id=1215700889088738095, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700889080349486, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Key Laboratory of Thermal Science and Power Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China), AuthorCompanyExt(id=1215700889092932399, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700889080349486, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.清华大学热科学与动力工程教育部重点实验室,北京 100084)]), AuthorCompany(id=1215700889185207096, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, xref=3., ext=[AuthorCompanyExt(id=1215700889193595703, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700889185207096, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.Shanxi Research Institute of Huairou Laboratory, Taiyuan 030006, China), AuthorCompanyExt(id=1215700889197790009, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700889185207096, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.怀柔实验室山西研究院,山西 太原 030006)])]), Author(id=1215700890485441402, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1215700890590299009, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700890485441402, language=EN, stringName=Xiwei KE, firstName=Xiwei, middleName=null, lastName=KE, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, address=
2.Key Laboratory of Thermal Science and Power Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
3.Shanxi Research Institute of Huairou Laboratory, Taiyuan 030006, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1215700890690962308, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700890485441402, language=CN, stringName=柯希玮, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, address=
2.清华大学热科学与动力工程教育部重点实验室,北京 100084
3.怀柔实验室山西研究院,山西 太原 030006, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1215700889080349486, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, xref=2., ext=[AuthorCompanyExt(id=1215700889088738095, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700889080349486, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Key Laboratory of Thermal Science and Power Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China), AuthorCompanyExt(id=1215700889092932399, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700889080349486, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.清华大学热科学与动力工程教育部重点实验室,北京 100084)]), AuthorCompany(id=1215700889185207096, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, xref=3., ext=[AuthorCompanyExt(id=1215700889193595703, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700889185207096, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.Shanxi Research Institute of Huairou Laboratory, Taiyuan 030006, China), AuthorCompanyExt(id=1215700889197790009, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700889185207096, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.怀柔实验室山西研究院,山西 太原 030006)])]), Author(id=1215700890779042696, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, orderNo=4, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1215700890879705997, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700890779042696, language=EN, stringName=Zhidong LIU, firstName=Zhidong, middleName=null, lastName=LIU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
4, address=
4.Guangdong Zhuhai Jinwan Power Generation Co., Ltd., Zhuhai 519050, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1215700892129608594, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700890779042696, language=CN, stringName=刘志东, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
4, address=
4.广东珠海金湾发电有限公司,广东 珠海 519050, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1215700889281676094, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, xref=4., ext=[AuthorCompanyExt(id=1215700889294259006, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700889281676094, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.Guangdong Zhuhai Jinwan Power Generation Co., Ltd., Zhuhai 519050, China), AuthorCompanyExt(id=1215700889302647615, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, companyId=1215700889281676094, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.广东珠海金湾发电有限公司,广东 珠海 519050)])]), Author(id=1215700892234466197, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, orderNo=5, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1215700892347712410, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700892234466197, language=EN, stringName=Qingzhong MA, firstName=Qingzhong, middleName=null, lastName=MA, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
5, address=
5.Shanxi Guojin Coal Power Co., Ltd., Lüliang 030500, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1215700892439987101, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, authorId=1215700892234466197, language=CN, stringName=马庆中, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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Computational model of the fluid domain, figureFileSmall=1N1iq2ZvOtGXptp6hajx7w==, figureFileBig=8nE5DB1GbBezBFPbNx217Q==, tableContent=null), ArticleFig(id=1215700893664723920, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图1, caption=
流体域计算模型, figureFileSmall=1N1iq2ZvOtGXptp6hajx7w==, figureFileBig=8nE5DB1GbBezBFPbNx217Q==, tableContent=null), ArticleFig(id=1215700893882827741, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.2, caption=
Grid division, figureFileSmall=ydydzDQodnIMm9c83i5fBQ==, figureFileBig=BWwfycNzeibDzqlRQsEaCg==, tableContent=null), ArticleFig(id=1215700893975102434, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图2, caption=
网格划分, figureFileSmall=ydydzDQodnIMm9c83i5fBQ==, figureFileBig=BWwfycNzeibDzqlRQsEaCg==, tableContent=null), ArticleFig(id=1215700894058988516, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.3, caption=
Grid independence verification, figureFileSmall=9gZI69mZrSC+U/0TLBA+GQ==, figureFileBig=mHuFJlNift8fGapGlrtkWQ==, tableContent=null), ArticleFig(id=1215700894138680297, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图3, caption=
网格无关性验证, figureFileSmall=9gZI69mZrSC+U/0TLBA+GQ==, figureFileBig=mHuFJlNift8fGapGlrtkWQ==, tableContent=null), ArticleFig(id=1215700894310646766, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.4, caption=
Model validation, figureFileSmall=vAZU+B2Io/wXqZJSrYyg4w==, figureFileBig=GrmWSAnf96H02pJeZxKm8A==, tableContent=null), ArticleFig(id=1215700894390338544, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图4, caption=
模型验证, figureFileSmall=vAZU+B2Io/wXqZJSrYyg4w==, figureFileBig=GrmWSAnf96H02pJeZxKm8A==, tableContent=null), ArticleFig(id=1215700894478418931, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.5, caption=
Two-dimensional surface streamlines on the rotor blade under different operating conditions, figureFileSmall=puXgWKJTA1buKVoYRzIY3Q==, figureFileBig=7YBs7RqBF0Kyfdi1WqzC6A==, tableContent=null), ArticleFig(id=1215700894591665142, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图5, caption=
不同工况下动叶片表面二维流线, figureFileSmall=puXgWKJTA1buKVoYRzIY3Q==, figureFileBig=7YBs7RqBF0Kyfdi1WqzC6A==, tableContent=null), ArticleFig(id=1215700894683939834, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.6, caption=
Meridional flow streamlines of last stage passage under different operating conditions, figureFileSmall=ToJoTREf/UtyYEXj3mcZ7g==, figureFileBig=4FJZ+EH2O8BBjrq/MzAxxA==, tableContent=null), ArticleFig(id=1215700894763631614, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图6, caption=
不同工况下末级通道子午面流线, figureFileSmall=ToJoTREf/UtyYEXj3mcZ7g==, figureFileBig=4FJZ+EH2O8BBjrq/MzAxxA==, tableContent=null), ArticleFig(id=1215700894860099586, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.7, caption=
Streamlines in 98% relative blade height section under different operating conditions, figureFileSmall=uWDySN2y/N+rFWNhj8y2Fg==, figureFileBig=gT+VqkSmSwovidSS7+fERg==, tableContent=null), ArticleFig(id=1215700894918819847, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图7, caption=
不同工况下98%相对叶高截面流线, figureFileSmall=uWDySN2y/N+rFWNhj8y2Fg==, figureFileBig=gT+VqkSmSwovidSS7+fERg==, tableContent=null), ArticleFig(id=1215700895078203401, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.8, caption=
Pressure distribution at s in, r in and r out under different operating conditions, figureFileSmall=mOW/vql67+hMIAPLpkpcnw==, figureFileBig=UmZXlJPbQ1YAIVPwl1hzMg==, tableContent=null), ArticleFig(id=1215700895195643914, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图8, caption=
不同工况下s in、r in和r out处的径向压力分布, figureFileSmall=mOW/vql67+hMIAPLpkpcnw==, figureFileBig=UmZXlJPbQ1YAIVPwl1hzMg==, tableContent=null), ArticleFig(id=1215700895271141389, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.9, caption=
Steam flow inlet angles of 20%, 50% and 95% relative blade height sections in rotor passage, figureFileSmall=BlAWZVzK9ICx6/7dFqtLNQ==, figureFileBig=Er9ajkfrEa+XGBd7qNjSeA==, tableContent=null), ArticleFig(id=1215700895384387602, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图9, caption=
动叶通道20%、50%及95%相对叶高截面汽流进口角变化, figureFileSmall=BlAWZVzK9ICx6/7dFqtLNQ==, figureFileBig=Er9ajkfrEa+XGBd7qNjSeA==, tableContent=null), ArticleFig(id=1215700896625901592, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.10, caption=
Pressure distribution and streamlines of 20%THA condition at three back pressures, figureFileSmall=Br52MJST7vyn0bcolFh64A==, figureFileBig=32WK/PDclqIU3laHw1sQTg==, tableContent=null), ArticleFig(id=1215700896722370586, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图10, caption=
3种背压下20%THA工况压力分布和流线, figureFileSmall=Br52MJST7vyn0bcolFh64A==, figureFileBig=32WK/PDclqIU3laHw1sQTg==, tableContent=null), ArticleFig(id=1215700896839811101, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.11, caption=
Pressure distribution and streamlines under 10%THA condition at three back pressures, figureFileSmall=pJOyqlGqVVvrPbfnkz5p3w==, figureFileBig=e3brWxXb6okGKJtVwNXhgg==, tableContent=null), ArticleFig(id=1215700896911114273, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图11, caption=
3种背压下10%THA工况压力分布和流线, figureFileSmall=pJOyqlGqVVvrPbfnkz5p3w==, figureFileBig=e3brWxXb6okGKJtVwNXhgg==, tableContent=null), ArticleFig(id=1215700896986611749, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.12, caption=
Steam flow inlet angle of each section under 20%THA and 10%THA conditions, figureFileSmall=+i33zo7QbvKNr0J9c5N6KQ==, figureFileBig=AU7SJWUOoujtFnGqCKziqQ==, tableContent=null), ArticleFig(id=1215700897070497831, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图12, caption=
20%THA和10%THA工况下各截面汽流进口角, figureFileSmall=+i33zo7QbvKNr0J9c5N6KQ==, figureFileBig=AU7SJWUOoujtFnGqCKziqQ==, tableContent=null), ArticleFig(id=1215700897162772523, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.13, caption=
Changes of blade torque with back pressure under 20%THA and 10%THA conditions, figureFileSmall=Zh6l7WXGUCmis7ZzSYx2Bg==, figureFileBig=L69DR3u55Y26Qpusf03lkw==, tableContent=null), ArticleFig(id=1215700897242464303, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图13, caption=
20%THA和10%THA工况下叶片扭矩随背压变化, figureFileSmall=Zh6l7WXGUCmis7ZzSYx2Bg==, figureFileBig=L69DR3u55Y26Qpusf03lkw==, tableContent=null), ArticleFig(id=1215700897334738995, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.14, caption=
Pressure distribution and streamlines before and after cylinder cutting operation under 20%THA condition, figureFileSmall=sgPZYrrbkhFie2L3zsrMTw==, figureFileBig=yyOM2F6jN6ZnvqlaETdDrg==, tableContent=null), ArticleFig(id=1215700897477345333, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图14, caption=
20%THA工况下切缸运行前后压力分布和流线, figureFileSmall=sgPZYrrbkhFie2L3zsrMTw==, figureFileBig=yyOM2F6jN6ZnvqlaETdDrg==, tableContent=null), ArticleFig(id=1215700897552842808, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.15, caption=
Pressure distribution and streamlines before and after cylinder cutting operation under 10%THA condition, figureFileSmall=V2qGaGlPZbGIGBKN3fM1VQ==, figureFileBig=+TJ4btrgM4ZzdZ9gMzDygw==, tableContent=null), ArticleFig(id=1215700897636728891, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图15, caption=
10%THA工况下切缸运行前后压力分布和流线, figureFileSmall=V2qGaGlPZbGIGBKN3fM1VQ==, figureFileBig=+TJ4btrgM4ZzdZ9gMzDygw==, tableContent=null), ArticleFig(id=1215700897695449151, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.16, caption=
Steam flow inlet angle of each section before and after cylinder cutting operation under 20%THA and 10%THA conditions, figureFileSmall=qVFFCOeWgh7Ia8ZByytjdg==, figureFileBig=45hJvg5l6zlxX5qTpQo+8g==, tableContent=null), ArticleFig(id=1215700897766752323, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图16, caption=
20%THA和10%THA工况下切缸运行前后各截面汽流进口角, figureFileSmall=qVFFCOeWgh7Ia8ZByytjdg==, figureFileBig=45hJvg5l6zlxX5qTpQo+8g==, tableContent=null), ArticleFig(id=1215700897871609927, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.17, caption=
Pressure distribution and streamlines before and after optimization under 10%THA condition, figureFileSmall=fwtPV9WMSyM1pehlycvi2A==, figureFileBig=Aoz+ftrOxbEiEhWrOKmd2A==, tableContent=null), ArticleFig(id=1215700897955496010, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图17, caption=
10%THA工况下优化前后压力分布和流线, figureFileSmall=fwtPV9WMSyM1pehlycvi2A==, figureFileBig=Aoz+ftrOxbEiEhWrOKmd2A==, tableContent=null), ArticleFig(id=1215700898039382092, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Fig.18, caption=
Change of inlet angle of steam flow in each section before and after optimization under 10%THA condition, figureFileSmall=fvrFeMvWXNpBsJhAhNytcg==, figureFileBig=DrhF4LcJjix4Zeuwt0C5Sg==, tableContent=null), ArticleFig(id=1215700898110685264, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=图18, caption=
10%THA工况下优化前后各截面汽流进口角变化, figureFileSmall=fvrFeMvWXNpBsJhAhNytcg==, figureFileBig=DrhF4LcJjix4Zeuwt0C5Sg==, tableContent=null), ArticleFig(id=1215700898186182739, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=EN, label=Tab.1, caption=
Boundary conditions for each operating condition
, figureFileSmall=null, figureFileBig=null, tableContent=
| 运行工况 | 总质量流量/(kg·s–1) | 入口总压/kPa | 入口总温/K | 出口静压/kPa |
|---|
| 100%THA(热耗率验收) | 146.2 | 29.34 | 341.73 | 4.9 |
| 40%THA | 58.19 | 11.46 | 321.64 | 4.9 |
| 30%THA | 43.78 | 8.52 | 315.92 | 4.9 |
| 20%THA | 29.33 | 6.02 | 309.36 | 4.9 |
| 10%THA | 14.53 | 4.79 | 305.28 | 4.9 |
| 5%THA | 7.12 | 4.48 | 304.10 | 4.9 |
), ArticleFig(id=1215700898274263126, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1215700882323325459, language=CN, label=表1, caption=
各运行工况下进出口边界条件
, figureFileSmall=null, figureFileBig=null, tableContent=
| 运行工况 | 总质量流量/(kg·s–1) | 入口总压/kPa | 入口总温/K | 出口静压/kPa |
|---|
| 100%THA(热耗率验收) | 146.2 | 29.34 | 341.73 | 4.9 |
| 40%THA | 58.19 | 11.46 | 321.64 | 4.9 |
| 30%THA | 43.78 | 8.52 | 315.92 | 4.9 |
| 20%THA | 29.33 | 6.02 | 309.36 | 4.9 |
| 10%THA | 14.53 | 4.79 | 305.28 | 4.9 |
| 5%THA | 7.12 | 4.48 | 304.10 | 4.9 |
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