Article(id=1213164444851557326, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1213164438232941220, articleNumber=null, orderNo=null, doi=10.19666/j.rlfd.202308134, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1692720000000, receivedDateStr=2023-08-23, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1767170543157, onlineDateStr=2025-12-31, pubDate=1711296000000, pubDateStr=2024-03-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1767170543157, onlineIssueDateStr=2025-12-31, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1767170543157, creator=13701087609, updateTime=1767170543157, updator=13701087609, issue=Issue{id=1213164438232941220, tenantId=1146029695717560320, journalId=1210938733613449225, year='2024', volume='53', issue='3', pageStart='1', pageEnd='182', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1767170541580, creator=13701087609, updateTime=1767775374880, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1215701293012796069, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1213164438232941220, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1215701293012796070, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1213164438232941220, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=137, endPage=145, ext={EN=ArticleExt(id=1213164445073855452, articleId=1213164444851557326, tenantId=1146029695717560320, journalId=1210938733613449225, language=EN, title=Flow-induced vibration suppression method and structural parameter design of the seal with shunt injection, columnId=1211002405299294959, journalTitle=Thermal Power Generation, columnName=Thermal energy science research, runingTitle=null, highlight=null, articleAbstract=
Labyrinth seals are widely used in various types of turbomachinery due to their simple structure, convenient maintenance, and long service life. The shunt injection devices can reduce the flow-induced vibration caused by the spiral effect and improve the stability of the sealing system by affecting the circumferential flow inside the seal cavity. The three-dimensional numerical models of shunt injection labyrinth seal were established to calculate and analyze the impact of the shunt injection nozzle on the dynamic characteristics of the seal under different structural parameters. The results show that the smaller the tilt angle of the anti-swirl nozzle, the greater the system damping and stability. When the tilt angle is 30°, the effective damping is 4 times that of the vertical angle incident; the shape of the anti-swirl nozzle has a small impact on the sealing dynamic and flow characteristics. The cross stiffness of both nozzle hole types is negative, and the difference in cross stiffness between the two is about 5 kN/m at low frequencies and 1~2 kN/m at high frequencies; the more nozzles there are, the more they can suppress the circumferential flow of the rotor, which is beneficial for system stability.
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梳齿密封因其结构简单、方便维修及使用寿命长等特点被广泛应用于各类透平机械,反旋流装置可通过影响密封腔室内周向流动,减弱螺旋形效应引起的气流激振问题,提高密封系统稳定性。建立反旋流梳齿密封三维数值模型,计算分析不同结构参数下反旋流喷嘴对密封动力学特性影响。结果表明:反旋流喷嘴倾斜角度越小,系统阻尼越大、稳定性越高,当倾斜角度为30°时,有效阻尼为垂直角度入射时的4倍;反旋流喷嘴形状对密封动力特性及流动特性影响较小,2种喷嘴孔型交叉刚度均为负值且低频下二者交叉刚度差值约为5 kN/m、高频下约为1~2 kN/m;喷嘴数目越多,越能够抑制转子周向流动,利于系统稳定。
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1.国家能源集团科学技术研究院有限公司,江苏 南京 210046, bio={"content":"
曹仲勋(1992),男,硕士,工程师,主要研究方向为旋转机械振动故障分析治理及汽轮机热力系统故障诊断,caozhongxun@163.com。
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曹仲勋(1992),男,硕士,工程师,主要研究方向为旋转机械振动故障分析治理及汽轮机热力系统故障诊断,caozhongxun@163.com。
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2.School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1213164452480995686, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, authorId=1213164452267086165, language=CN, stringName=张万福, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.上海理工大学能源与动力工程学院,上海 200093, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1213164449310101692, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, xref=2., ext=[AuthorCompanyExt(id=1213164449314295997, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, companyId=1213164449310101692, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Three-dimensional schematic diagram of shunt injection labyrinth seal, figureFileSmall=DC1ins09ARbA7SjurE6ysQ==, figureFileBig=CNvWrqPmfWB6idOE9Au3DA==, tableContent=null), ArticleFig(id=1213164453454074279, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图1, caption=
反旋流梳齿密封三维示意, figureFileSmall=DC1ins09ARbA7SjurE6ysQ==, figureFileBig=CNvWrqPmfWB6idOE9Au3DA==, tableContent=null), ArticleFig(id=1213164453672178097, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.2, caption=
Two-dimensional schematic diagram of the geometric parameters of shunt injection labyrinth seal, figureFileSmall=QwiV6O14gpLCeh+0wqXM2w==, figureFileBig=B1egYG2fLOByRZKBA6BLUQ==, tableContent=null), ArticleFig(id=1213164453777035704, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图2, caption=
反旋流梳齿密封几何尺寸二维示意, figureFileSmall=QwiV6O14gpLCeh+0wqXM2w==, figureFileBig=B1egYG2fLOByRZKBA6BLUQ==, tableContent=null), ArticleFig(id=1213164453898670525, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.3, caption=
Rotor elliptical whirling model, figureFileSmall=jbCjOe1ot9cJYj7yRaHhvA==, figureFileBig=qzhae1QRHkJcyWZHXkSuLA==, tableContent=null), ArticleFig(id=1213164454020305348, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图3, caption=
转子椭圆涡动模型, figureFileSmall=jbCjOe1ot9cJYj7yRaHhvA==, figureFileBig=qzhae1QRHkJcyWZHXkSuLA==, tableContent=null), ArticleFig(id=1213164454133551565, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.4, caption=
Grid model, figureFileSmall=NOfuWi9kGEmsaM3n/yLKEQ==, figureFileBig=sDgWW+OklTu5BfXRfWtkpg==, tableContent=null), ArticleFig(id=1213164454250992081, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图4, caption=
网格模型, figureFileSmall=NOfuWi9kGEmsaM3n/yLKEQ==, figureFileBig=sDgWW+OklTu5BfXRfWtkpg==, tableContent=null), ArticleFig(id=1213164454364238293, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.5, caption=
CFD predictions and experimental data of the rotordynamic coefficients for the labyrinth seal, figureFileSmall=uVRBJJ8kr1PSJwW/wM8Hxw==, figureFileBig=lmAG2hxrtlYTq2DCHnLREg==, tableContent=null), ArticleFig(id=1213164454481678811, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图5, caption=
密封动力特性系数数值与实验对比, figureFileSmall=uVRBJJ8kr1PSJwW/wM8Hxw==, figureFileBig=lmAG2hxrtlYTq2DCHnLREg==, tableContent=null), ArticleFig(id=1213164455718998497, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.6, caption=
Dynamic characteristic coefficients at different nozzle angles, figureFileSmall=YwBpGeAw9ikNXef/n3OdcA==, figureFileBig=N8/xDmMaL4IlS2Ec8zNXcA==, tableContent=null), ArticleFig(id=1213164455811273187, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图6, caption=
不同喷嘴角度下动力特性系数, figureFileSmall=YwBpGeAw9ikNXef/n3OdcA==, figureFileBig=N8/xDmMaL4IlS2Ec8zNXcA==, tableContent=null), ArticleFig(id=1213164455920325097, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.7, caption=
Dynamic characteristic coefficients at different nozzle shapes, figureFileSmall=qTbki2OOvWNNTuRgWOAiFw==, figureFileBig=HmIiM0IAO1Q/r7yfuEtceA==, tableContent=null), ArticleFig(id=1213164456029377010, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图7, caption=
不同孔型喷嘴下动力特性系数, figureFileSmall=qTbki2OOvWNNTuRgWOAiFw==, figureFileBig=HmIiM0IAO1Q/r7yfuEtceA==, tableContent=null), ArticleFig(id=1213164456134234613, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.8, caption=
Dynamic characteristic coefficient at different nozzle numbers, figureFileSmall=ltNQp3ET8es03QP5W48xEw==, figureFileBig=i4WPsEWoXKI1ocgXAe96cg==, tableContent=null), ArticleFig(id=1213164456230703611, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图8, caption=
不同喷嘴数目下动力特性系数, figureFileSmall=ltNQp3ET8es03QP5W48xEw==, figureFileBig=i4WPsEWoXKI1ocgXAe96cg==, tableContent=null), ArticleFig(id=1213164456339755522, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.9, caption=
Circumferential velocity at seal clearance for different nozzle angles, figureFileSmall=/7+gmsFs4WoZ66L/mlH6TA==, figureFileBig=q+RWRGxKSyFCOzA60tWMkA==, tableContent=null), ArticleFig(id=1213164456415252995, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图9, caption=
不同喷嘴角度下密封间隙处周向速度, figureFileSmall=/7+gmsFs4WoZ66L/mlH6TA==, figureFileBig=q+RWRGxKSyFCOzA60tWMkA==, tableContent=null), ArticleFig(id=1213164456490750473, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.10, caption=
Circumferential swirl intensity of different shaped nozzles on the meridian surface, figureFileSmall=ehXzhy4wPPtbntAV6vvPcQ==, figureFileBig=XnZscyyUW+RrxmJIi3mhyQ==, tableContent=null), ArticleFig(id=1213164456587219472, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图10, caption=
不同形状喷嘴子午面周向旋流强度, figureFileSmall=ehXzhy4wPPtbntAV6vvPcQ==, figureFileBig=XnZscyyUW+RrxmJIi3mhyQ==, tableContent=null), ArticleFig(id=1213164456683688468, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.11, caption=
C1—2 velocity distribution at different nozzle numbers, figureFileSmall=KrMKGHY24HO6eG1pLSCB0Q==, figureFileBig=NWy0JM5PO8u7QBQiRpOnXw==, tableContent=null), ArticleFig(id=1213164456775963161, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图11, caption=
不同喷嘴数目下腔室C1—2速度分布, figureFileSmall=KrMKGHY24HO6eG1pLSCB0Q==, figureFileBig=NWy0JM5PO8u7QBQiRpOnXw==, tableContent=null), ArticleFig(id=1213164456885015070, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Fig.12, caption=
Leakage at different shunt injection nozzle structures, figureFileSmall=yHB24b5ht86Ee61V4qk5OQ==, figureFileBig=Ain8PmPlcBxp/L8+Sz0bNA==, tableContent=null), ArticleFig(id=1213164456981484066, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=图12, caption=
不同反旋流喷嘴结构下泄漏量, figureFileSmall=yHB24b5ht86Ee61V4qk5OQ==, figureFileBig=Ain8PmPlcBxp/L8+Sz0bNA==, tableContent=null), ArticleFig(id=1213164457073758759, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Tab.1, caption=
Structural parameters of the seal and shunt injection nozzle
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 参数设置 |
|---|
| 转子直径d/mm | 60.00 |
| 密封间隙Cr/mm | 0.15 |
| 密封腔室底部宽度w1/mm | 3.80 |
| 密封齿尖宽度w2/mm | 0.25 |
| 密封腔底部弧形半径R/mm | 1.25 |
| 腔室深度h/mm | 3.30 |
| 密封段总长L/mm | 36.70 |
| 喷嘴个数N/个 | 8、16、32 |
| 喷嘴角度θ/(°) | 90、60、30 |
| 喷嘴形状 | 方形、圆形 |
), ArticleFig(id=1213164457174422060, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=表1, caption=
密封及反旋流喷嘴结构参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 参数设置 |
|---|
| 转子直径d/mm | 60.00 |
| 密封间隙Cr/mm | 0.15 |
| 密封腔室底部宽度w1/mm | 3.80 |
| 密封齿尖宽度w2/mm | 0.25 |
| 密封腔底部弧形半径R/mm | 1.25 |
| 腔室深度h/mm | 3.30 |
| 密封段总长L/mm | 36.70 |
| 喷嘴个数N/个 | 8、16、32 |
| 喷嘴角度θ/(°) | 90、60、30 |
| 喷嘴形状 | 方形、圆形 |
), ArticleFig(id=1213164457279279662, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=EN, label=Tab.2, caption=
Calculation conditions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 参数设置 |
|---|
| 工质 | 空气(理想气体) |
| 湍流模型 | 标准k-ε |
| 湍流强度/% | 5 |
| 进口温度Tin/K | 298 |
| 进口总压pin/MPa | 0.5 |
| 喷嘴进口压力pSI/MPa | 0.5 |
| 出口静压pout/MPa | 0.1 |
| 转子转速ω/(r·min–1) | 6 000 |
| 进口预旋比 | 0.45 |
| 涡动频率Ωi/Hz | 20, 40, ……, 260, 280 |
| 涡动幅值/mm | a=0.001; b=0.000 5 |
| 时间步长/s | 0.000 1 |
), ArticleFig(id=1213164457392525873, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1213164444851557326, language=CN, label=表2, caption=
计算工况
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 参数设置 |
|---|
| 工质 | 空气(理想气体) |
| 湍流模型 | 标准k-ε |
| 湍流强度/% | 5 |
| 进口温度Tin/K | 298 |
| 进口总压pin/MPa | 0.5 |
| 喷嘴进口压力pSI/MPa | 0.5 |
| 出口静压pout/MPa | 0.1 |
| 转子转速ω/(r·min–1) | 6 000 |
| 进口预旋比 | 0.45 |
| 涡动频率Ωi/Hz | 20, 40, ……, 260, 280 |
| 涡动幅值/mm | a=0.001; b=0.000 5 |
| 时间步长/s | 0.000 1 |
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