Article(id=1319293463103918285, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1319293303430955712, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1005-0329.2025.08.008, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1731600000000, receivedDateStr=2024-11-15, revisedDate=1750176000000, revisedDateStr=2025-06-18, acceptedDate=null, acceptedDateStr=null, onlineDate=1792473672891, onlineDateStr=2026-10-20, pubDate=1756483200000, pubDateStr=2025-08-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792473672891, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792473672891, creator=13701087609, updateTime=1792473672891, updator=13701087609, issue=Issue{id=1319293303430955712, tenantId=1146029695717560320, journalId=1316781260334530699, year='2025', volume='53', issue='8', pageStart='1', pageEnd='118', issueExtLink='null', onlineDate='null', pubDate='1756483200000', pubDateStr='2025-08-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792473634822, creator='13701087609', updateTime=1792473634822, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=61, endPage=67, ext={EN=ArticleExt(id=1319293463292661966, articleId=1319293463103918285, tenantId=1146029695717560320, journalId=1316781260334530699, language=EN, title=Erosion resistance research of YW3 hard alloy cage throttle valve, columnId=null, journalTitle=Fluid Machinery, columnName=null, runingTitle=null, highlight=null, articleAbstract=

To address the technical challenge of erosion damage caused by sand particles to cage throttle valve sleeves during natural gas extraction,this study investigates the erosion mechanism using YW3 hard alloy sleeves as the research object.Through laboratory erosion tests,an erosion model for YW3 hard alloy was established and validated via numerical analysis.This model was further applied to erosion simulation of throttle valves to analyze solid particle trajectories,erosion mechanisms,and predict the service life of cage throttle valve sleeves.The results show that with increasing erosion angle,the erosion rate of YW3 first increases and then decreases,reaching its maximum at 45°.Under an erosion angle of 90°,the velocity exponent n and particle size function C(dp) for YW3 are 2.41 and 3.684 4×10-9,respectively.The main damaged area of the sleeve is at the outlet of the throttle hole.This research provides reference for material selection and life assessment of throttling components in cage throttle valves used in high‑sand‑content gas fields.

, authors=Chunyu FENG1, Shixin YU1, Lei YANG2, Zhongwu YANG2, Pengcheng WANG2, Wenbo DU3, Zhen WANG4, authorsList=Chunyu FENG, Shixin YU, Lei YANG, Zhongwu YANG, Pengcheng WANG, Wenbo DU, Zhen WANG, 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=1319293466874597605, articleId=1319293463103918285, tenantId=1146029695717560320, journalId=1316781260334530699, language=CN, title=YW3硬质合金笼套式节流阀抗冲蚀研究, columnId=1317484287230853622, journalTitle=流体机械, columnName=设计计算, runingTitle=null, highlight=null, articleAbstract=

针对笼套式节流阀笼套在天然气开采过程中受砂砾冲蚀损伤的技术难题,以YW3硬质合金笼套为研究对象开展冲蚀机理研究。通过室内冲蚀试验,建立了YW3硬质合金的冲蚀模型,并采用数值分析验证,将该模型进一步应用到节流阀冲蚀仿真中,分析固体颗粒运动轨迹、冲蚀机制,预测笼套式节流阀笼套的使用寿命。研究结果表明,随冲蚀角增大,YW3冲蚀率先增大、后减小,45°时冲蚀率最大;在冲蚀角度90°下,YW3的速度指数n和粒径函数C(dp)分别为2.41,3.684 4×10-9;笼套的主要损伤部位为节流孔出口处。研究为高含砂气田笼套式节流阀节流部件的选材与寿命评估提供参考。

, authors=冯春宇1, 于世欣1, 杨磊2, 杨忠武2, 王鹏程2, 杜文波3, 王臻4, authorsList=冯春宇, 于世欣, 杨磊, 杨忠武, 王鹏程, 杜文波, 王臻, authorCompany=null, correspAuthors=null, authorNote=

冯春宇(1986),男,副教授,硕士生导师,主要研究方向为天然气开采装备及技术,通信地址:610500四川省成都市新都区西南石油大学成都校区机电工程学院,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=ZBYLaTA5ykDB0vHygcIrMQ==, magXml=E/YJIC1J9yDv/ao/8E/WEg==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=qe4WiPJneW1VUwLNl281Ug==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=6qYRvWCmhylMl9BfyxJQmw==, mapNumber=null, fund=null)}, authors=[Author(id=1319293467398885619, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=595234116@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1319293467482771701, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, authorId=1319293467398885619, language=EN, stringName=Chunyu FENG, firstName=Chunyu, middleName=null, lastName=FENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, address=1School of Mechanical Engineering,Southwest Petroleum University,Chengdu 610500,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1319293467554074870, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, authorId=1319293467398885619, language=CN, stringName=冯春宇, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, address=1西南石油大学 机电工程学院,成都 610500, bio={"content":"

冯春宇(1986),男,副教授,硕士生导师,主要研究方向为天然气开采装备及技术,通信地址:610500四川省成都市新都区西南石油大学成都校区机电工程学院,E-mail:。

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冯春宇(1986),男,副教授,硕士生导师,主要研究方向为天然气开采装备及技术,通信地址:610500四川省成都市新都区西南石油大学成都校区机电工程学院,E-mail:。

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(a)流场模型  (b)网格模型

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Laboratory erosion test data of front and back surfaces for YW3 target

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冲蚀角度/(°)原始质量/g冲蚀后质量/g冲蚀磨损量/mg平均冲蚀
磨损量/mg
体积冲蚀磨损率/(mm3⋅kg-1)
正面反面正面反面正面反面
1575.500 375.320 975.320 975.146 7179.4174.2176.86.67
3065.151 664.623 864.623 864.104 2527.8519.6523.719.75
4565.404 864.675 864.675 863.942 4729.0733.4731.227.57
6065.453 064.802 464.802 464.158 2650.6644.2647.424.41
7566.264 965.684 265.684 265.099 2580.7585.0582.921.98
9066.810 666.379 566.379 565.951 8431.1427.7429.416.19
), ArticleFig(id=1319293475124793653, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, language=CN, label=表1, caption=

YW3靶材的正反面室内冲蚀试验数据

, figureFileSmall=null, figureFileBig=null, tableContent=
冲蚀角度/(°)原始质量/g冲蚀后质量/g冲蚀磨损量/mg平均冲蚀
磨损量/mg
体积冲蚀磨损率/(mm3⋅kg-1)
正面反面正面反面正面反面
1575.500 375.320 975.320 975.146 7179.4174.2176.86.67
3065.151 664.623 864.623 864.104 2527.8519.6523.719.75
4565.404 864.675 864.675 863.942 4729.0733.4731.227.57
6065.453 064.802 464.802 464.158 2650.6644.2647.424.41
7566.264 965.684 265.684 265.099 2580.7585.0582.921.98
9066.810 666.379 566.379 565.951 8431.1427.7429.416.19
), ArticleFig(id=1319293475212874038, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, language=EN, label=Tab.2, caption=

Values of impact angle function for YW3

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γ/(°)153045607590
f(γ)0.241 80.716 21.000 00.885 40.797 20.587 3
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YW3的冲击角函数取值

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γ/(°)153045607590
f(γ)0.241 80.716 21.000 00.885 40.797 20.587 3
), ArticleFig(id=1319293475355480376, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, language=EN, label=Tab.3, caption=

Average velocity of brown fused alumina under different erosion pressures

, figureFileSmall=null, figureFileBig=null, tableContent=
压力/MPa0.10.20.30.4
粒子平均速度/(m⋅s-1)62.3476.0391.7395.61
), ArticleFig(id=1319293475426783545, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, language=CN, label=表3, caption=

棕刚玉在不同冲蚀压力下的平均速度

, figureFileSmall=null, figureFileBig=null, tableContent=
压力/MPa0.10.20.30.4
粒子平均速度/(m⋅s-1)62.3476.0391.7395.61
), ArticleFig(id=1319293475489698106, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, language=EN, label=Tab.4, caption=

Fitting results

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试件磨料Kn
YW3棕刚玉7.10×10-32.41
), ArticleFig(id=1319293475548418363, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, language=CN, label=表4, caption=

拟合结果

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试件磨料Kn
YW3棕刚玉7.10×10-32.41
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Model coefficient k values of YW3

, figureFileSmall=null, figureFileBig=null, tableContent=
项目k1(15°)k2(30°)k3(45°)k4(60°)k5(75°)k6(90°)k
数值2.702 43.248 83.218 53.052 73.127 02.660 83.001 7
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YW3的模型系数k值

, figureFileSmall=null, figureFileBig=null, tableContent=
项目k1(15°)k2(30°)k3(45°)k4(60°)k5(75°)k6(90°)k
数值2.702 43.248 83.218 53.052 73.127 02.660 83.001 7
), ArticleFig(id=1319293475825242430, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, language=EN, label=Tab.6, caption=

Comparison of erosion wear amount for YW3 hard alloy

, figureFileSmall=null, figureFileBig=null, tableContent=
冲蚀角度/(°)试验/mg仿真/mg误差/%
15176.80193.629.51
30523.70483.847.61
45731.20681.946.74
60647.40636.581.67
75582.90562.663.47
90429.40469.809.41
), ArticleFig(id=1319293475900739903, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293463103918285, language=CN, label=表6, caption=

YW3硬质合金的冲蚀磨损量对比

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冲蚀角度/(°)试验/mg仿真/mg误差/%
15176.80193.629.51
30523.70483.847.61
45731.20681.946.74
60647.40636.581.67
75582.90562.663.47
90429.40469.809.41
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YW3硬质合金笼套式节流阀抗冲蚀研究
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冯春宇 1 , 于世欣 1 , 杨磊 2 , 杨忠武 2 , 王鹏程 2 , 杜文波 3 , 王臻 4
流体机械 | 设计计算 2025,53(8): 61-67
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流体机械 |设计计算 2025 , 53 (8) : 61 -67
YW3硬质合金笼套式节流阀抗冲蚀研究
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冯春宇(1986),男,副教授,硕士生导师,主要研究方向为天然气开采装备及技术,通信地址:610500四川省成都市新都区西南石油大学成都校区机电工程学院,E-mail:。

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冯春宇(1986),男,副教授,硕士生导师,主要研究方向为天然气开采装备及技术,通信地址:610500四川省成都市新都区西南石油大学成都校区机电工程学院,E-mail:。

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冯春宇1 , 于世欣1, 杨磊2, 杨忠武2, 王鹏程2, 杜文波3, 王臻4
作者信息
  • 1西南石油大学 机电工程学院,成都 610500
  • 2塔里木油田分公司 克拉采油气管理区,新疆 库尔勒 841000
  • 3四川宝石机械钻采设备有限责任公司,四川 德阳 618000
  • 4四川职业技术学院,四川 遂宁 629000
作者简介:

冯春宇(1986),男,副教授,硕士生导师,主要研究方向为天然气开采装备及技术,通信地址:610500四川省成都市新都区西南石油大学成都校区机电工程学院,E-mail:。

Erosion resistance research of YW3 hard alloy cage throttle valve
Chunyu FENG1 , Shixin YU1, Lei YANG2, Zhongwu YANG2, Pengcheng WANG2, Wenbo DU3, Zhen WANG4
Affiliations
  • 1School of Mechanical Engineering,Southwest Petroleum University,Chengdu 610500,China
  • 2Kela Oil and Gas Management District,Tarim Oilfield Branch,Korla 841000,China
  • 3Sichuan Jewel Machinery Drilling and Mining Equipment Co.,Ltd.,Deyang 618000,China
  • 4Sichuan Vocational and Technical College,Suining 629000,China
出版时间: 2025-08-30 doi: 10.3969/j.issn.1005-0329.2025.08.008
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针对笼套式节流阀笼套在天然气开采过程中受砂砾冲蚀损伤的技术难题,以YW3硬质合金笼套为研究对象开展冲蚀机理研究。通过室内冲蚀试验,建立了YW3硬质合金的冲蚀模型,并采用数值分析验证,将该模型进一步应用到节流阀冲蚀仿真中,分析固体颗粒运动轨迹、冲蚀机制,预测笼套式节流阀笼套的使用寿命。研究结果表明,随冲蚀角增大,YW3冲蚀率先增大、后减小,45°时冲蚀率最大;在冲蚀角度90°下,YW3的速度指数n和粒径函数C(dp)分别为2.41,3.684 4×10-9;笼套的主要损伤部位为节流孔出口处。研究为高含砂气田笼套式节流阀节流部件的选材与寿命评估提供参考。

YW3硬质合金  /  笼套式节流阀  /  冲蚀磨损  /  冲蚀模型

To address the technical challenge of erosion damage caused by sand particles to cage throttle valve sleeves during natural gas extraction,this study investigates the erosion mechanism using YW3 hard alloy sleeves as the research object.Through laboratory erosion tests,an erosion model for YW3 hard alloy was established and validated via numerical analysis.This model was further applied to erosion simulation of throttle valves to analyze solid particle trajectories,erosion mechanisms,and predict the service life of cage throttle valve sleeves.The results show that with increasing erosion angle,the erosion rate of YW3 first increases and then decreases,reaching its maximum at 45°.Under an erosion angle of 90°,the velocity exponent n and particle size function C(dp) for YW3 are 2.41 and 3.684 4×10-9,respectively.The main damaged area of the sleeve is at the outlet of the throttle hole.This research provides reference for material selection and life assessment of throttling components in cage throttle valves used in high‑sand‑content gas fields.

cage throttle valve  /  YW3 hard alloy  /  erosion mechanism  /  numerical simulation  /  service life prediction
冯春宇, 于世欣, 杨磊, 杨忠武, 王鹏程, 杜文波, 王臻. YW3硬质合金笼套式节流阀抗冲蚀研究. 流体机械, 2025 , 53 (8) : 61 -67 . DOI: 10.3969/j.issn.1005-0329.2025.08.008
Chunyu FENG, Shixin YU, Lei YANG, Zhongwu YANG, Pengcheng WANG, Wenbo DU, Zhen WANG. Erosion resistance research of YW3 hard alloy cage throttle valve[J]. Fluid Machinery, 2025 , 53 (8) : 61 -67 . DOI: 10.3969/j.issn.1005-0329.2025.08.008
在全球能源转型的关键节点,天然气成为清洁能源的重要代表,是能源结构优化与低碳转型进程中的关键增长点与主力军[1]。节流阀作为特高压气井降压调产的核心设备,承担着将天然气压力降至地面输送管线标准的重任[2]。在天然气开采作业中,节流阀的节流部件长期遭受天然气携带砂砾的高速冲击,致使部件结构受损、降压调产功能失效,以及工作稳定性下降等一系列安全隐患[3]。钨钛钴类硬质合金因具备卓越的硬度、出色的耐磨与抗冲蚀性能[4-5],成为制造特高压节流阀节流部件的理想选材。因此,深入探究其冲蚀性能,对于确保节流阀的稳定运行,以及推动冲蚀研究与工程应用的发展具有重要的意义。
目前,国内外众多学者已针对冲蚀磨损展开大量研究。王国荣等[6]运用欧拉-拉格朗日法与离散相模型,精准预测了颗粒在不同入射角度下对40Cr钢的冲蚀磨损量、速率及形貌分布;付玉坤等[7]借助拉伸与冲击试验,深入剖析了YG8合金与20CrMnTi钢对阀芯工作寿命的影响机制;薄纪康[8]在详细解析冲蚀磨损现象与形貌的基础上,揭示了高压节流阀阀芯的冲蚀磨损原理;POURARIA等[9]采用计算流体力学手段,对堵塞三通和弯管的冲蚀速率进行预测,深入探讨了内部流速与砂粒大小对侵蚀速率的作用关系;王华昆等[10]针对冲蚀损伤造成管道失效问题,分析了流速、出口压力、质量流率、粒径、上游段长度等参数对管道冲蚀损伤演化的影响;VIEIRA等[11]提出一种综合性建模与计算研究方法,并构建冲蚀模型,研究空气中砂砾对弯头的冲蚀效应。
现阶段,特高压节流阀冲蚀研究多聚焦于仿真模拟方法,而针对节流阀材料的冲蚀模型构建则相对匮乏。因此,本文采用室内冲蚀试验确定 YW3的冲蚀模型,并将该模型应用于笼套式节流阀的冲蚀仿真分析,以此深入探究节流阀节流部件的冲蚀性能,为未来实际工程应用中的抗冲蚀部件材料筛选与结构优化提供有力的参考依据。
E/CRC冲蚀模型对冲蚀影响的因素考虑比较全面,除了考虑固体颗粒的冲击速度和冲击角度外,还考虑了靶材硬度和颗粒形状等因素,预测精度进一步提升[12-13]。且该模型的试验数据主要是气固两相流和以气相为主的多相流。通过对比分析发现,E/CRC冲蚀模型更适合作为气固两相冲蚀研究的基础模型。因此,本文以E/CRC冲蚀模型为基础进行研究。使用E/CRC冲蚀模型进行冲蚀预测,需要输入参数包括冲击角函数、速度指数和粒径函数。文中采用试验和数值模拟相结合的方式获取所需的模型参数,以建立冲蚀模型。
冲蚀试验平台由空气压缩机、储气罐、某型号喷砂机改制的冲蚀试验机、管路、仪表和阀门等组成。根据相似性原理改造的冲蚀试验机如图1所示,整个室内冲蚀试验平台原理如图2所示。以空气压缩机加压后的空气作为连续相,棕刚玉磨料作为离散相,在混合室中高速的空气带动磨料颗粒,最后通过喷头,实现对试件的靶材磨损试验。
节流阀节流部件材料为YW3硬质合金,采用试件的硬质合金尺寸为30 mm×30 mm×5 mm。将金属靶材试样的预冲蚀表面清洗并烘干备用。试验中采用棕刚玉为磨料,喷砂机的入口压力为0.4 MPa,靶材和喷头中心距离为30 mm,冲蚀时间固定为10 min,每次试验磨料用量固定为2 kg。每个试件试验前后均称量3次取其平均值,同时,为了进一步减小试验误差,每个试件正反两面均进行冲蚀试验,试验完成后取其均值作为该试件的试验结果。利用体积损失法对试验结果进行评测,使用靶材在冲蚀磨损后的体积损失来描述其冲蚀磨损性能。体积损失法的冲蚀磨损率计算公式如下:
EV=m1 / (ρM)
式中,EV为体积冲蚀磨损率,mm3/kg;m1为靶材磨损质量,mg;ρ为靶材密度,mg/mm3;M为磨料耗费质量,g。
通过调节靶材的倾斜角度,使得喷嘴出口磨料的运动方向和硬质合金靶材预冲蚀面之间的冲蚀角度分别为15°,30°,45°,60°,75°,90°。表1列出YW3靶材冲蚀试验结果。可以看出,在15°~45°之间,平均冲蚀磨损量增加了554.4 mg,增加的比例较大;在45°~90°之间,平均冲蚀磨损率呈现缓慢下降的趋势,整体来看,YW3的平均冲蚀磨损量在45°达到最大值,为731.2 mg。
冲击角函数是反映冲蚀角度与冲蚀磨损量关系的函数,YW3的冲击角函数取值见表2,冲击角函数式见式(2)。
f(γ)=mγ/mmax
式中,mγ为对应角度的冲蚀磨损量,mg;mmax为所有角度中的最大冲蚀磨损量,mg。
相关研究表明,冲蚀磨损量与固体颗粒的冲击速度呈指数关系[14-16],其表达式见式(3),且指数大小与磨料和试件材料有关。
E=KVn
式中,K为常数;V为固体颗粒速度,m/s;n为速度指数。
为了获取磨料在不同压力下的冲蚀速度,根据自制冲蚀试验机的喷头尺寸,建立流场及网格模型进行数值模拟分析,如图3所示。
数值模拟分析的边界条件采用压力入口,其值分别设置为:0.1,0.2,0.3,0.4 MPa;出口边界条件采用压力出口,其值设置为0 MPa。为了得到粒子冲击试件表面时的速度,通过软件的粒子追踪功能,捕获固体颗粒冲击在试件表面的速度并取其平均值,其结果见表3。
YW3在不同冲蚀速度下的曲线如图4所示,拟合得到系数K和n见表4。由拟合结果可知,当磨料为棕刚玉,YW3的速度指数n=2.41。
粒径函数由模型系数K、硬度函数f(HB)、固体颗粒形状系数共同决定。EDWARDS等[17]研究了砂砾外形对冲蚀磨损的影响,锋利的砂砾颗粒形状系数Fs取1。棕刚玉外形非常锋利,因此,文中棕刚玉的Fs值取1。维氏硬度及粒径函数式如下:
f(HV)=0.066 3(HV)-0.593
C(dp)=kf(HV)Fs
式中,HV为维氏硬度,N/mm2;Fs为颗粒形状系数。
首先,通过调整粒径函数C(dp)值,使得数值模拟结果接近试验结果;然后,根据式(5)计算出试件不同冲蚀角度的ki值;最后,取ki的均值作为k的值。YW3的ki及k的取值见表5。
将YW3的硬度值代入式(4),计算出f(HV)=0.012 576。将模型系数k、颗粒形状系数Fs、硬度函数f(HV)代入式(5),得到C(dp)=3.684 4×10-9。
为了验证YW3材料冲蚀模型的正确性,利用建立的冲蚀模型进行冲蚀仿真,并将仿真结果与试验结果进行对比。入口边界条件采用压力入口,其值设置为0.4 MPa,出口边界条件采用压力出口,其值设置为0 MPa。壁面边界条件采用无滑移边界条件和标准壁面函数法,壁面恢复系数采用FORDER等[18]所使用的参数,将原文献中的度转换为弧度后,表达式如下:
en=0.998-0.013 614α+5.787 7×10-5α2-1.435 5×10-7α3+2.505 4×10-9α4et=1-0.013 614α+2.558 8×10-5α2-1.116 5×10-6α3+2.598 2×10-9α4-3.562 9×10-11
式中,en为法向恢复系数;et为切向恢复系数;α为冲击角度,rad。
图5示出YW3在冲蚀角分别为15°,30°,45°,60°,75°,90°,冲蚀压力0.4 MPa时的冲蚀云图。
为了对比试验结果和数值模拟结果之间的差异,定义了误差,其表达式如下:
δ=m1-m2 m1
式中,m2为数值模拟分析所得冲蚀磨损量,mg。
m2=1×106Et
式中,E为冲蚀磨损率,kg/s;t为冲蚀时间,s。
通过式(8)将图5的仿真结果转化为冲蚀磨损量,并与试验结果进行对比,其结果见表6。由表6可以看出,试验结果与数值模拟结果吻合度较好,验证了YW3冲蚀模型的准确性。
节流阀三维模型如图6所示,其中,箭头代表天然气和固体颗粒的运动方向。在靠近壁面的区域,采用边界层网格技术,生成多层加密网格,在2个区域的交接处采用渐变的方式进行网格过渡。流场模型及网格见图7。
气体介质设置为甲烷,气体模型选用气real-gas-redlich-kwon。入口边界条件采用压力入口,其值设置为175 MPa;温度设置为120 ℃;出口边界条件设置为压力出口,其值设置为75 MPa。砂砾质量流量依据某气田提供的120 kg/a进行设置,砂砾直径与试验砂砾直径保持一致,设置为125 μm。在本冲蚀模型中,选用棕刚玉作为磨料,通过离散相的DPM模型对壁面冲蚀开展气、固两相的三维湍流稳态计算。计算过程中,湍流模型采用RNG k-ε模型,压力和速度的耦合采用Coupled算法,以保证计算的稳定性和准确性。壁面边界条件采用无滑移边界条件和标准壁面函数法,壁面反弹函数与式(6)保持一致。
离散相固体颗粒的运动轨迹和运动速度对冲蚀磨损起着决定性作用,图8示出节流阀在标准工况下,开度为36.3 mm的粒子轨迹图。可以看出,固体颗粒经节流阀入口均匀射入后,平行进入阀门环腔;在固体颗粒经过节流部件小孔时,部分固体颗粒直接由位置4垂直冲击在节流部件的小孔上,从而进入下游;其余部分固体颗粒在惯性作用下无法立即改变运动方向,沿着阀体环腔位置1,3运动,其中一部分由位置1,3进入下游,其余部分运动至位置2进入下游。粒子在通过节流孔时运动速度会急剧上升,高速冲击节流部件,从而产生严重的冲蚀。
图9示出节流阀在标准工况下,开度为36.3 mm的冲蚀云图。可以看出,节流部件的冲蚀磨损以局部冲蚀磨损为主,且冲蚀损伤主要出现在笼套节流孔及笼套壁面。同时还可以看出,位于背面的位置2处冲蚀磨损比其他位置更加严重,虽然位置2处的固体颗粒速度小于其他位置,但由于大量固体颗粒并未通过位置4(节流阀前部)直接进入下游,而是随着气流运动到位置2(节流阀后部)后,一部分进入下游,另一部分经多次撞击后进入下游。因此,笼套的位置2处受到的冲蚀更为严重。这一冲蚀磨损规律与现场失效的节流部件冲蚀规律相吻合,现场换取的笼套的主要失效形式表现为节流孔孔径变大,如图10所示。
通过上述分析和现场节流部件失效情况可知,冲蚀磨损主要出现在笼套的节流孔处。因此,将节流孔处的仿真结果代入式(9)(10),换算为节流孔孔径的变化。
V=1×109Eρt
式中,V为体积损失,mm3。
d2=4VLnlLπ+d12
式中,d2为节流孔冲蚀1天后的直径,mm;VL为1天的节流孔体积损失,mm3;lL为笼套孔长度,mm;d1为前一天笼套孔直径,mm。
节流孔直径随时间的变化曲线如图11所示。可以看出,节流孔直径随着冲蚀时间的增加而增加,且随着时间的增加,孔径增加趋势逐渐变缓,冲蚀185天后,孔径增大到2.19 mm,孔径增大到原来的1.5倍。由此可以大致推测笼套的磨损情况,以便日后对节流阀的检修和更换。
(1)通过室内冲蚀试验得出YW3的冲蚀磨损率随着冲蚀角度的增大先增大、后减小,且冲蚀磨损率最大的角度为45°。
(2)根据确定的YW3的冲蚀模型,得到了YW3的冲击角函数,在冲击角为90°时,速度指数n和粒径函数C(dp)分别为2.41和3.684 4×10-9。
(3)应用建立的冲蚀模型进行冲蚀仿真,仿真结果表明,笼套的主要损伤部位为笼套节流孔出口处。
(4)节流孔直径随着冲蚀时间的增加而增加,且随着时间的增加,孔径增加趋势逐渐变缓,冲蚀185天后孔径增大到2.19 mm,孔径增大到原来的1.5倍,能够为现场设备检修提供参考。

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2025年第53卷第8期
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doi: 10.3969/j.issn.1005-0329.2025.08.008
  • 接收时间:2024-11-15
  • 首发时间:2026-10-20
  • 出版时间:2025-08-30
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  • 收稿日期:2024-11-15
  • 修回日期:2025-06-18
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    1西南石油大学 机电工程学院,成都 610500
    2塔里木油田分公司 克拉采油气管理区,新疆 库尔勒 841000
    3四川宝石机械钻采设备有限责任公司,四川 德阳 618000
    4四川职业技术学院,四川 遂宁 629000
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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
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