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Article(id=1319293069111968590, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1319293032650887902, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1005-0329.2025.03.012, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1715702400000, receivedDateStr=2024-05-15, revisedDate=1735056000000, revisedDateStr=2024-12-25, acceptedDate=null, acceptedDateStr=null, onlineDate=1792473578956, onlineDateStr=2026-10-20, pubDate=1743264000000, pubDateStr=2025-03-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792473578956, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792473578956, creator=13701087609, updateTime=1792473578956, updator=13701087609, issue=Issue{id=1319293032650887902, tenantId=1146029695717560320, journalId=1316781260334530699, year='2025', volume='53', issue='3', pageStart='1', pageEnd='118', issueExtLink='null', onlineDate='null', pubDate='1743264000000', pubDateStr='2025-03-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792473570263, creator='13701087609', updateTime=1792473570263, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=97, endPage=103, ext={EN=ArticleExt(id=1319293069283935055, articleId=1319293069111968590, tenantId=1146029695717560320, journalId=1316781260334530699, language=EN, title=Research on centerline rubber‑lined butterfly valve small‑opening flow realization, columnId=null, journalTitle=Fluid Machinery, columnName=null, runingTitle=null, highlight=null, articleAbstract=

To meet the demand for fast response in the range of 5%~15% small opening by the rubber‑lined centerline‑typebutterfly valve under specific working conditions in the post‑rolling cooling system，the design principle of the conventional type was analyzed，especially in terms of structural sides，sealing modes，opening and closing strokes of the sealing pair.Based on the process requirements and the advantages and disadvantages of the conventional structure，the valve seat design was improved by leveraging the good plasticity of the rubber‑lined valve seat.The design ideas and corresponding advantages were elaborated.Finally，a simulation combined with flow test verification was conducted to compare and analyze the flow rate between the improved structure and the conventional structure.The results indicate that the Cv value of the improved structure at 5% opening is comparable to that of the conventional structure at 15% opening.The improved valve can produce flow at 5% opening，and within the range of 15% opening，the Cv value of the improved structure is 100%~250% higher than that of the conventional structure.Within the range of 20%~50% opening，the Cv values of the two structures tend to be the same，while in the range of 50%~100% opening，the Cv value of the improved structure is 10%~25% lower than that of the conventional structure.Additionally，by comparing actual flow test data with simulation results，the flow trend is consistent，particularly in the small‑opening range，confirming the credibility of the improved design.The findings of this study provide a reference for optimizing the small‑opening and flow rate performance of centerline‑type rubber‑lined butterfly valves.

, authors=Weiwei ZHOU, Baiqi LIU, Jiaoshan HAO, Simei LIU, Li ZHANG, authorsList=Weiwei ZHOU, Baiqi LIU, Jiaoshan HAO, Simei LIU, Li ZHANG, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1319293071494333286, articleId=1319293069111968590, tenantId=1146029695717560320, journalId=1316781260334530699, language=CN, title=中线衬胶蝶阀实现小开度流量调节的研究, columnId=1317484300472271469, journalTitle=流体机械, columnName=应用技术, runingTitle=null, highlight=null, articleAbstract=

为了满足特殊工况对中线衬胶蝶阀在小开度5%~15%范围内有流量，且能实现快速响应的需求，分析了常规中线衬胶蝶阀的设计原理，并着重对密封副的结构、密封方式和启闭行程等进行了研究。针对其工艺需求及优缺点，利用衬胶阀座可塑性较好的特点，对阀座进行了改进设计，并详述了改进方案的设计思路、细节和优势。采用模拟结合试验验证的方法，对改进结构和常规结构进行流量分析。结果表明，改进结构5%开度的流量系数Cv与常规结构15%开度的Cv相当；改进后的阀门在5%开度即可产生流量，且在15%开度范围内，改进结构的Cv比常规结构高100%~250%；在 20%~50%开度范围，2种结构的Cv趋于相同；在50%~100%开度范围内，改进结构的Cv比常规结构低10%~25%；通过将实际阀门流量试验数据与仿真分析的数据进行比较，流量变化趋势一致，特别是在小开度区域，验证了该改进设计的可信度。研究结果可以为中线衬胶蝶阀小开度有流量的相关研究提供参考。

, authors=周位伟, 刘柏圻, 郝娇山, 刘诗梅, 张黎, authorsList=周位伟, 刘柏圻, 郝娇山, 刘诗梅, 张黎, authorCompany=null, correspAuthors=null, authorNote=

周位伟（1980），男，硕士，高级工程师，主要从事调节阀产品研究，通信地址：400700重庆市北碚区蔡家岗镇蔡和路879号重庆川仪调节阀有限公司技术部，E-mail：。

, correspAuthorsNote=null, copyrightStatement=作者向本刊所投稿件一经本刊录用，则该论文的复制权、发行权、信息网络传播权、翻译权、汇编权等权利视为自动转让给本刊。本刊为国内各主要数据库收录期刊，本刊所发表的稿件将同时通过互联网进行网络出版或提供信息服务。, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=YEYPkJ/lgWM4FMoFjD16gg==, magXml=gZrKH2i8IW0iQF+QWaNaYg==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=BTWSjdaiosodtEWxZGJAsw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=X0K9UXmuom43vgPgoAhYHQ==, mapNumber=null, fund=null)}, authors=[Author(id=1319293071762768747, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=22558783@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1319293071825683309, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, authorId=1319293071762768747, language=EN, stringName=Weiwei ZHOU, firstName=Weiwei, middleName=null, lastName=ZHOU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=Chongqing Chuanyi Control Valve Co.，Ltd.，Chongqing 400700，China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1319293071901180782, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, authorId=1319293071762768747, language=CN, stringName=周位伟, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=重庆川仪调节阀有限公司，重庆 400700, bio={"content":"

周位伟（1980），男，硕士，高级工程师，主要从事调节阀产品研究，通信地址：400700重庆市北碚区蔡家岗镇蔡和路879号重庆川仪调节阀有限公司技术部，E-mail：。

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周位伟（1980），男，硕士，高级工程师，主要从事调节阀产品研究，通信地址：400700重庆市北碚区蔡家岗镇蔡和路879号重庆川仪调节阀有限公司技术部，E-mail：。

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Fluid Machinery，2023，51（21）：56-63., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1319293071674688359, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, xref=null, ext=[AuthorCompanyExt(id=1319293071683076968, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, companyId=1319293071674688359, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Chongqing Chuanyi Control Valve Co.，Ltd.，Chongqing 400700，China), AuthorCompanyExt(id=1319293071691465577, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, companyId=1319293071674688359, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=重庆川仪调节阀有限公司，重庆 400700)])], figs=[ArticleFig(id=1319293073444684681, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Fig.1, caption=Conventional CLRBF structure, figureFileSmall=QyVFDOp197k0y+fe5PMHkw==, figureFileBig=BTWSjdaiosodtEWxZGJAsw==, tableContent=null), ArticleFig(id=1319293073532765066, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=图1, caption=常规中线衬胶蝶阀结构, figureFileSmall=QyVFDOp197k0y+fe5PMHkw==, figureFileBig=BTWSjdaiosodtEWxZGJAsw==, tableContent=null), ArticleFig(id=1319293073750868875, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Fig.2, caption=Valve seat and plate structure of CLRBF, figureFileSmall=h+0SrcUhTuaJYOcomK/8Kw==, figureFileBig=BPvSnGohlLomAAUOZtaOTw==, tableContent=null), ArticleFig(id=1319293073826366348, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=图2, caption=常规中线衬胶蝶阀的阀座和阀板结构, figureFileSmall=h+0SrcUhTuaJYOcomK/8Kw==, 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tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=图4, caption=改进后的中线衬胶蝶阀开闭位置, figureFileSmall=AHI9Sjogu28A4l4smhB4fg==, figureFileBig=mVLYvRiEFyPJ+70Umk3sAQ==, tableContent=null), ArticleFig(id=1319293074216436625, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Fig.5, caption=Structure of valve seat of improved CLRBF（model）, figureFileSmall=vH5bPlvZfK4W0N7kjwdfow==, figureFileBig=Yg+NL3yMLlnrN6f9+D1Hnw==, tableContent=null), ArticleFig(id=1319293074275156882, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=图5, caption=改进后的阀座（模型）, figureFileSmall=vH5bPlvZfK4W0N7kjwdfow==, figureFileBig=Yg+NL3yMLlnrN6f9+D1Hnw==, tableContent=null), ArticleFig(id=1319293074342265747, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Fig.6, caption=Structure of valve seat of improved CLRBF（entity）, figureFileSmall=w/1xv8ffnutDLr9JZoY/Bw==, figureFileBig=g2hI+zmvG+7zdxAgwstGNg==, tableContent=null), ArticleFig(id=1319293074396791700, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=图6, caption=改进后的阀座（实物）, figureFileSmall=w/1xv8ffnutDLr9JZoY/Bw==, figureFileBig=g2hI+zmvG+7zdxAgwstGNg==, tableContent=null), ArticleFig(id=1319293074455511957, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Fig.7, caption=CFD Meshing, figureFileSmall=UPZrdja6q9CL19LLV2sZaQ==, figureFileBig=nEsEG3pzHFYOAXMaFvF/lQ==, tableContent=null), ArticleFig(id=1319293074535203734, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=图7, caption=CFD网格, figureFileSmall=UPZrdja6q9CL19LLV2sZaQ==, figureFileBig=nEsEG3pzHFYOAXMaFvF/lQ==, tableContent=null), ArticleFig(id=1319293074619089815, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Fig.8, caption=Valve velocity streamline cloud diagram of improved CLRBF, figureFileSmall=NonLOJkKbmpw2g1MK0zcqQ==, figureFileBig=Hkeh6zvFl3LDHhJgfBh+TA==, tableContent=null), ArticleFig(id=1319293074702975896, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=图8, caption=改进阀座的中线衬胶蝶阀速度流线云图, figureFileSmall=NonLOJkKbmpw2g1MK0zcqQ==, figureFileBig=Hkeh6zvFl3LDHhJgfBh+TA==, tableContent=null), ArticleFig(id=1319293074778473369, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Fig.9, caption=Valve velocity streamline cloud diagram of conventiona CLRBF, figureFileSmall=Updjkb3wz76AUs+L3YvShQ==, figureFileBig=HCuLxLmRLwOp2rAggTP3cA==, tableContent=null), ArticleFig(id=1319293074845582234, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=图9, caption=常规中线衬胶蝶阀速度流线云图, figureFileSmall=Updjkb3wz76AUs+L3YvShQ==, figureFileBig=HCuLxLmRLwOp2rAggTP3cA==, tableContent=null), ArticleFig(id=1319293074916885403, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Fig.10, caption=The relationship between opening and relative flow coefficient of the DN250 CLRBF before/after improved, figureFileSmall=JtnRWYFkD9W/sn+cFmmeIA==, figureFileBig=fj4FFbdYb/OohvMOsXg68Q==, tableContent=null), ArticleFig(id=1319293074979799964, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=图10, caption=DN250中线衬胶蝶阀改进前后开度-相对流量系数曲线, figureFileSmall=JtnRWYFkD9W/sn+cFmmeIA==, figureFileBig=fj4FFbdYb/OohvMOsXg68Q==, tableContent=null), ArticleFig(id=1319293075038520221, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Fig.11, caption=Improved DN250 CLRBF, figureFileSmall=I6IPQi0L6zegyNJypVl9Lg==, figureFileBig=7QLygK+o7V/MyjScevD99g==, tableContent=null), ArticleFig(id=1319293075105629086, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=图11, caption=改进后的DN250中线衬胶蝶阀, figureFileSmall=I6IPQi0L6zegyNJypVl9Lg==, figureFileBig=7QLygK+o7V/MyjScevD99g==, tableContent=null), ArticleFig(id=1319293075176932255, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Tab.1, caption=

Fluid domain mesh independence test data

, figureFileSmall=null, figureFileBig=null, tableContent=
序号网格数量出口流量/（kg⋅s-1）出口平均流速/（m⋅s-1）
1223 61110.010.408
2354 52210.410.425
3475 02610.840.442
4596 21511.150.455
5726 14811.230.458
), ArticleFig(id=1319293075256624032, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=表1, caption=

流体域网格无关性检验数据

, figureFileSmall=null, figureFileBig=null, tableContent=
序号网格数量出口流量/（kg⋅s-1）出口平均流速/（m⋅s-1）
1223 61110.010.408
2354 52210.410.425
3475 02610.840.442
4596 21511.150.455
5726 14811.230.458
), ArticleFig(id=1319293075340510113, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Tab.2, caption=

Cv at different opening

, figureFileSmall=null, figureFileBig=null, tableContent=
开度（%）改进设计Cv常规设计Cv
5%61.5—
10%81.723.8
15%137.362.8
20%224.2146.3
25%291.7232.4
30%377.1319.4
35%470.8435.4
40%571.5543.3
45%679.3660.6
50%816.7831.7
55%973.41 022.4
60%1 115.91 240.9
65%1 309.51 476.5
70%1 534.21 790.3
75%1 800.62 146.8
80%2 103.82 516.5
85%2 452.73 134.1
90%2 882.93 817.2
95%3 372.84 308.1
100%3 950.24 863.7
), ArticleFig(id=1319293075420201890, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=表2, caption=

不同开度时的Cv

, figureFileSmall=null, figureFileBig=null, tableContent=
开度（%）改进设计Cv常规设计Cv
5%61.5—
10%81.723.8
15%137.362.8
20%224.2146.3
25%291.7232.4
30%377.1319.4
35%470.8435.4
40%571.5543.3
45%679.3660.6
50%816.7831.7
55%973.41 022.4
60%1 115.91 240.9
65%1 309.51 476.5
70%1 534.21 790.3
75%1 800.62 146.8
80%2 103.82 516.5
85%2 452.73 134.1
90%2 882.93 817.2
95%3 372.84 308.1
100%3 950.24 863.7
), ArticleFig(id=1319293075491505059, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=EN, label=Tab.3, caption=

Flow test report of improved DN250 CLRBF （partial）

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开度
(%)		流量系数
Cv		相对流量系数
试验仿真
567.851.41.6
1093.012.02.0
15165.243.53.5
20265.065.65.7
25364.947.77.4
30487.7910.29.6
35593.6112.411.9
40709.3114.914.5
45848.6517.817.2
501 059.0522.220.7
551 191.7425.024.6
601 388.2329.128.2
651 623.5134.133.1
701 908.6140.138.8
752 326.4048.945.6
802 731.2757.353.2
853 203.9367.262.1
903 888.1981.773.0
1004 761.52100100
), ArticleFig(id=1319293075571196836, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293069111968590, language=CN, label=表3, caption=

改进的DN250中线衬胶蝶阀流量试验数据（部分）

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开度
(%)		流量系数
Cv		相对流量系数
试验仿真
567.851.41.6
1093.012.02.0
15165.243.53.5
20265.065.65.7
25364.947.77.4
30487.7910.29.6
35593.6112.411.9
40709.3114.914.5
45848.6517.817.2
501 059.0522.220.7
551 191.7425.024.6
601 388.2329.128.2
651 623.5134.133.1
701 908.6140.138.8
752 326.4048.945.6
802 731.2757.353.2
853 203.9367.262.1
903 888.1981.773.0
1004 761.52100100
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中线衬胶蝶阀实现小开度流量调节的研究
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周位伟 , 刘柏圻 , 郝娇山 , 刘诗梅 , 张黎
流体机械 | 应用技术 2025,53(3): 97-103
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流体机械 |应用技术 2025 , 53 (3) : 97 -103
中线衬胶蝶阀实现小开度流量调节的研究
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周位伟（1980），男，硕士，高级工程师，主要从事调节阀产品研究，通信地址：400700重庆市北碚区蔡家岗镇蔡和路879号重庆川仪调节阀有限公司技术部，E-mail：。

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周位伟（1980），男，硕士，高级工程师，主要从事调节阀产品研究，通信地址：400700重庆市北碚区蔡家岗镇蔡和路879号重庆川仪调节阀有限公司技术部，E-mail：。

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周位伟 , 刘柏圻, 郝娇山, 刘诗梅, 张黎
作者信息
  • 重庆川仪调节阀有限公司，重庆 400700
作者简介:

周位伟（1980），男，硕士，高级工程师，主要从事调节阀产品研究，通信地址：400700重庆市北碚区蔡家岗镇蔡和路879号重庆川仪调节阀有限公司技术部，E-mail：。

Research on centerline rubber‑lined butterfly valve small‑opening flow realization
Weiwei ZHOU , Baiqi LIU, Jiaoshan HAO, Simei LIU, Li ZHANG
Affiliations
  • Chongqing Chuanyi Control Valve Co.，Ltd.，Chongqing 400700，China
出版时间: 2025-03-30 doi: 10.3969/j.issn.1005-0329.2025.03.012
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摘要
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为了满足特殊工况对中线衬胶蝶阀在小开度5%~15%范围内有流量，且能实现快速响应的需求，分析了常规中线衬胶蝶阀的设计原理，并着重对密封副的结构、密封方式和启闭行程等进行了研究。针对其工艺需求及优缺点，利用衬胶阀座可塑性较好的特点，对阀座进行了改进设计，并详述了改进方案的设计思路、细节和优势。采用模拟结合试验验证的方法，对改进结构和常规结构进行流量分析。结果表明，改进结构5%开度的流量系数Cv与常规结构15%开度的Cv相当；改进后的阀门在5%开度即可产生流量，且在15%开度范围内，改进结构的Cv比常规结构高100%~250%；在 20%~50%开度范围，2种结构的Cv趋于相同；在50%~100%开度范围内，改进结构的Cv比常规结构低10%~25%；通过将实际阀门流量试验数据与仿真分析的数据进行比较，流量变化趋势一致，特别是在小开度区域，验证了该改进设计的可信度。研究结果可以为中线衬胶蝶阀小开度有流量的相关研究提供参考。

中线蝶阀  /  小开度  /  阀座

To meet the demand for fast response in the range of 5%~15% small opening by the rubber‑lined centerline‑typebutterfly valve under specific working conditions in the post‑rolling cooling system，the design principle of the conventional type was analyzed，especially in terms of structural sides，sealing modes，opening and closing strokes of the sealing pair.Based on the process requirements and the advantages and disadvantages of the conventional structure，the valve seat design was improved by leveraging the good plasticity of the rubber‑lined valve seat.The design ideas and corresponding advantages were elaborated.Finally，a simulation combined with flow test verification was conducted to compare and analyze the flow rate between the improved structure and the conventional structure.The results indicate that the Cv value of the improved structure at 5% opening is comparable to that of the conventional structure at 15% opening.The improved valve can produce flow at 5% opening，and within the range of 15% opening，the Cv value of the improved structure is 100%~250% higher than that of the conventional structure.Within the range of 20%~50% opening，the Cv values of the two structures tend to be the same，while in the range of 50%~100% opening，the Cv value of the improved structure is 10%~25% lower than that of the conventional structure.Additionally，by comparing actual flow test data with simulation results，the flow trend is consistent，particularly in the small‑opening range，confirming the credibility of the improved design.The findings of this study provide a reference for optimizing the small‑opening and flow rate performance of centerline‑type rubber‑lined butterfly valves.

centerline‑type butterfly valve  /  small opening  /  valve seat
周位伟, 刘柏圻, 郝娇山, 刘诗梅, 张黎. 中线衬胶蝶阀实现小开度流量调节的研究. 流体机械, 2025 , 53 (3) : 97 -103 . DOI: 10.3969/j.issn.1005-0329.2025.03.012
Weiwei ZHOU, Baiqi LIU, Jiaoshan HAO, Simei LIU, Li ZHANG. Research on centerline rubber‑lined butterfly valve small‑opening flow realization[J]. Fluid Machinery, 2025 , 53 (3) : 97 -103 . DOI: 10.3969/j.issn.1005-0329.2025.03.012
正文
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0　引言
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中线衬胶蝶阀（英文缩小为CLRBF）作为蝶阀的一种，由于其结构相对简单、重量轻、体积小、加工难度低、开关迅速、密封性能好等优点［1］，得到了广泛的应用。作为调节阀使用时，常规中线蝶阀从设计原理和实际应用中都表现出，一般在15%~70%开度具有良好的调节特性［2］，但是在0~15%开度范围内调节性能较差。甚至对于中线衬胶蝶阀来说，这个小开度范围内，其流量几乎为零。本文研究的小开度流量调节，是为了满足中厚板产线轧后冷却系统中的中线衬胶蝶阀在小开度时有流量，且流量够大、可调节的需求。
王清波等［3］针对常规中线蝶阀进行了三维模拟和试验研究，验证了其仿真模拟的可靠性与真实性，得出了常规结构的中线蝶阀小开度流通能力差的结论。李道圆［4］对中厚板产线轧后冷却系统中的中线衬胶蝶阀进行了修复研究，通过更换常规结构的衬胶，发现该蝶阀在小开度范围内无流量，当阀门打开到15%后才开始有明显的水流量。综上可见，一般常规的中线衬胶蝶阀达不到小开度控制要求。
为了解决上述问题，本文首先通过分析常规结构的密封原理，针对小开度无流量的现象，发现了设计原理上存在的问题，据此对结构和起始密封位置进行了改进性研究。然后，以DN250规格为例，分别对常规结构和改进后结构进行了仿真模型分析，结合同规格实物阀门的流量试验进行了验证。该研究可对中厚板产线轧后冷却系统中的中线衬胶蝶阀小开度有流量的需求提供理论指导。
1　原理及设计
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1.1　常规中线衬胶蝶阀
常规中线衬胶蝶阀的阀板回转中心位于阀体的中心线和阀板的密封面截面上，而中线衬胶蝶阀的阀座包覆了合成橡胶（或复合聚四氟乙烯）［5］。常规中线衬胶蝶阀结构如图1所示。
当阀门关闭时，阀板的外圆密封面挤压弹性阀座，使阀座产生弹性变形，从而形成的弹性力作为密封比压［5］，实现了蝶阀的密封。此结构的密封位置为阀座中心线0°位置，密封生效时，阀板整个密封面与阀座呈完全挤压状态。
常规中线衬胶蝶阀的阀座和阀板的装配关系如图2所示。阀板以阀杆轴线为旋转中心，逆时针开启。为了便于描述，现设定在阀座内圈中，水平线方向上的位置为B区域，靠近阀杆孔位区域为A区域。
当阀门开启时，受阀轴扭力作用，B区域的旋转半径最大，阀板上B区域位置的密封面会首先开始脱离阀座，释放弹性力，密封比压开始降低。随着开度/旋转角度的增大，这种弹性力的释放会逐渐向A区域扩展（由于对称性，其他3/4区域同理展开）。直到最大开度时，除上、下阀板孔附近还有小部分阀板始终与阀座接触外，阀板绝大部分完全脱离阀座，阀门全开。
常规中线衬胶蝶阀开闭位置如图3所示。
常规中线衬胶蝶阀阀板外缘为球面的一部分，关闭时的密封位置在阀板密封面的中心线上，即与阀座宽度中心线重合的位置（也是开度为0°位置）。当阀门开启，从0°位置 开始时，随着旋转角度的增大，阀板密封面与阀座的脱离逐渐增大。但在5%~6%开度范围内（约6°~7°），即使在最早发生弹性力释放的B区域，密封副仍处于临近挤压状态，即并未完全脱离，此时可能出现一定程度的泄漏，但不能形成流量。此5%~6%开度的区域，即为“死区”［5-6］，如图2，3所示。
1.2　改进后的中线衬胶蝶阀
1.2.1　密封方式的改变
要解决小开度流量问题，首先从“死区”着手。保持阀座的最小流道直径不变，将阀座的形状由直筒圆柱面结构改进为圆弧凸面结构，并适当加大阀板外圆直径，如图4所示。
改进结构设计可以实现以下改变：
（1）密封方式，由常规的密封面中心线的面密封，改为阀板密封面棱边与阀座圆弧凸面线接触挤压密封；
（2）由于阀板外圆直径加大，实现阀板棱边与阀座圆弧面接触密封，使阀板的密封位置由起始位置0°变为了约6°~7°的位置，可以避开“死区”，缩短了开启行程。阀板只需旋转小幅开度即可迅速产生流量；
（3）由于阀座密封面外形的凸面结构，随着开度的加大，在相同位置上，阀座外形呈现出的弧度也增大，较常规直筒阀座的间隙更大，为小开度流量提供了更大流通空间。
1.2.2　阀座环面结构改进
在阀座圆周环面上，常规中线蝶阀的阀座采用等宽度环面弹性材料（见图2），阀门开启时，阀板上B区域首先脱离阀座，A区域仍需旋转更大角度才能脱离阀座。
在以上改进结构的基础上，要解决阀板小开度角度下能迅速有流量，以及A，B区域阀座压缩量更加均匀的问题，应使A区域也尽快脱离阀座，打开流道。因此，在阀座圆周环面上，采取以B区域为最大凸面宽度，向A区域方向逐渐缩小阀座凸面宽度的设计，如图5所示。
通过上述改进设计，可以使阀板开启时，阀板上A区域在旋转较小角度后，即能快速与阀座脱离，甚至可以与B区域同步开启流道。
同理，若为等宽的凸面阀座，由于旋转半径不同，关闭时，A区域先进入阀座，B区域需要旋转更大角度才能进入阀座。A区域率先形成阀座挤压，当实现B区域的阀座挤压时，A区域阀座持续挤压形成的压缩量就会更大，则会对后续B区域的旋转形成阻力，执行机构需要更大的力矩来克服该阻力。
改进设计时，对A区域的阀座凸面宽度进行了适当的缩小，将阀板A区域与阀座的接触、挤压延后，尽量与B区域同步，从而避免和减小了不必要的操作阻力，减小阀门开闭时对执行器输出力矩的要求。
改进后的阀座实物如图6所示。
2　仿真分析验证
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2.1　改进后的中线衬胶蝶阀分析
为了验证改进结构在流通能力上的变化，通过Fluent流体仿真分析软件，对改进结构的模型进行了仿真分析。
2.1.1　模型建立
根据GB/T 30832—2014《阀门　流量系数和流阻系数试验方法》对流量试验的要求，入口管道长度取5倍管道公称通径，出口管道长度取10倍管道公称通径［6-8］。阀门模型开度设定为5%（5%开度是以该设计中的关闭位置为起点），三维实体模型采用UG软件建立，抽取流体域模型，在不影响分析结果的基础上对流体域的锐角及圆角等进行适当简化。模型为对称结构，取一半模型计算［9］。
2.1.2　CFD网格划分
流体域模型网格采用Fluent Meshing进行网格划分，整体采用多面体网格控制，并对小孔及附近的网格进行细化处理，保证最小节流处的网格在3层及以上。以阀门出口流体流量和平均流速作为流道区域网格无关性检验的依据，其中90°流开模型数据如表1所示。
由表1可知，对比5组网格计算数据，网格数量从223 611增加到726 148，数量分别增加58.5%，34.0%，25.5%，21.8%；流量从10.01 kg/s增长到11.23 kg/s，分别增长 4.00%，4.10%，2.90%，0.72%；速度从0.408 m/s增长到0.458 m/s，分别增长4.20%，4.00%，2.90%，0.66%。相比较而言，当网格数达到596 215 以上时，流量及速度变化量可以忽略不计。考虑模拟计算精度、时间成本和工作量，将网格数控制在596 215左右较为合适。最终流场仿真网格如图7所示。
2.1.3　边界条件
通过Fluent软件对流体域模型进行不可压缩流场仿真分析。介质为常温水；采用k-ε湍流模型，标准璧面函数，入口总压设置为0.5 MPa，出口静压为0（大气压）；设置对称面；璧面设置为绝热、无滑移；采用Simplec算法。
2.1.4　后处理及Cv计算
计算收敛后进行结果后处理。图8示出改进阀座后的中线衬胶蝶阀的速度流线云图，由图可以看出，流体主要从阀板与阀座的上、下间隙流过，且在阀板背部形成大量旋涡。
根据GB/T 30832—2014 《阀门　流量系数和流阻系数试验方法》 计算流量系数Cv，
Cv=11.56QρΔpvρ0
式中，Q为被测阀门的体积流量，m3/h；Δpv为阀门上、下游取压口的压力差，kPa；ρ0为15 ℃时水的密度，kg/m3，ρ0=999 kg/m3；ρ为流体的密度，kg/m3。
读取进、出口静压及质量流量，根据式（1）计算得到改进设计模型的Cv为61.45≈61.5。
2.2　流量对比分析
根据2.1节仿真分析及Cv计算规则，按照5%的跨度，分别对不同开度下常规中线衬胶蝶阀和改进中线衬胶蝶阀模型进行模拟仿真［10-11］，并计算不同开度时的Cv，结果见表2。图9示出了15%开度下常规中线衬胶蝶阀的速度流线云图。通过分析发现，常规中线衬胶蝶阀开度需到达约15%时，才能实现与改进后的中线衬胶蝶阀同等的Cv。改进后的中线衬胶蝶阀开度5%时的流通能力与常规中线衬胶蝶阀开度15%的流通能力相当，从而实现了小开度有较大流量，为管道中提供冷却水，并实现流量调节。
从表2可以看出，当开度为10%时，改进蝶阀的Cv达到了81.7，而常规蝶阀为23.8，经过计算，改进蝶阀的Cv较常规蝶阀提高了243%；当开度为15%时，改进蝶阀的Cv较常规蝶阀提高了118%。在开度30%以内，改进结构在增大流量方面具有显著的优势。随着开度的增大，2种蝶阀在大开度时的差距缩小。
2种蝶阀不同开度对应的相对流量系数曲线如图10所示。从图可以看出，改进后的中间衬胶蝶阀，其整体流通能力高于常规中线衬胶蝶阀，解决了常规中线衬胶蝶阀小开度时流量过小的问题。
3　试验验证
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基于以上研究结论，制造了改进后的DN250中线衬胶蝶阀，如图11所示。
根据GB/T 30832—2014 《阀门　流量系数和流阻系数试验方法》 进行流量试验。记录试验数据，经计算得到流量系数Cv和相对流量系数，如表3所示。从表可见，通过实际流量试验得到的改进DN250中线衬胶蝶阀的Cv，比仿真计算得到的Cv稍大，但大体相当，即理论设计结果得到了实际验证。
4　结论
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（1）将阀座的结构改进为圆弧凸面结构，并适当加大阀板外圆直径；将阀板密封方式，由常规的密封面中心线面密封，改变为密封面棱边与阀座圆弧凸面进行进行挤压密封；将阀板起始的密封位置由0°位置，改变为约6°~7°的位置。以上措施可提高中线衬胶蝶阀小开度流通能力，且随着开度的增加，流通能力快速增大，解决了常规中线衬胶蝶阀小开度“死区”无流量的问题。
（2）通过调整阀座圆弧凸面的宽度，可实现阀板在水平位置和靠近阀杆的位置同时脱离阀座，快速提高流通能力。同时也实现了阀座水平位置与靠近阀杆位置的阀板密封面棱边压缩量的均衡，只需较小的扭矩即可使阀板密封面棱边靠上圆弧凸台面，实现高性能密封。有效降低了阀门对力矩的需求，改进的中线衬胶蝶阀对执行机构配置的要求更低，更具竞争力。
（3）对比常规中线衬胶蝶阀，改进的中线衬胶蝶阀在0~15%开度范围，改进蝶阀的Cv比常规蝶阀的高100%~250%；在20%~50%开度范围，2种 蝶阀Cv趋于相同；在50%~100%开度范围，改进蝶阀的Cv比常规蝶阀的低10%~25%。改进蝶阀5%开度的Cv即可达到常规蝶阀15%开度下的Cv，实现了小开度有流量且流量较大的设计目标。
（4）由于阀座为柔性橡胶材质，在硫化制造后，其流道尺寸较设计尺寸偏大，且仿真模拟时忽略了橡胶材质的挤压变形，导致仿真Cv数据与改进蝶阀的实际流量试验数据有所偏差。阀门小开度时，由于阀板与阀座间挤压变形较大，仿真Cv数据与改进蝶阀的实际流量试验数据偏差较 小，在10%左右；随着阀门开度增大，阀板与阀座的挤压变形释放，仿真Cv数据与改进蝶阀的实际流量试验数据偏差均在20%左右。但整体来看，流量变化趋势一致，模拟结果与实际结果基本相符。

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doi: 10.3969/j.issn.1005-0329.2025.03.012
  • 接收时间：2024-05-15
  • 首发时间：2026-10-20
  • 出版时间：2025-03-30
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  • 收稿日期：2024-05-15
  • 修回日期：2024-12-25
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    重庆川仪调节阀有限公司，重庆 400700
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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
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