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时间:2019-03-07
《高中压缸平衡盘漏汽率计算及误差分析[1]》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、高中压缸平衡盘漏汽率计算及误差分析李刚,胥建群,曹祖庆,朱小令,石永锋。1.东南大学能源与环境学院,江苏南京2100962.西安热工研究院有限公司,陕西西安7100323.华电电力科学研究院,浙江杭州310030[摘要]针对汽轮机高中压缸平衡盘汽封漏汽率计算,引入变汽温法和数值计算法,建立误差分析数学模型。在某台超临界600Mw汽轮机高中压缸平衡盘汽封漏汽率试验中,应用变汽温法及数值计算法所得结果基本一致,说明数值计算法可准确估算高中压缸平衡盘汽封漏汽率。基于误差分析数学模型计算各测量参数误差对高中压缸平衡盘汽封漏汽率精度的影响,结果表明测
2、量参数中,对汽封漏汽率精度影响最大的是再热蒸汽温度和中压缸排汽温度。[关键词]超临界600MW机组;汽轮机;高中压缸;平衡盘汽封;漏汽;变汽温法;数值计算法;热力性能[中图分类号]TK262[文献标识码]A[文章编号]1002—3364(2010)12—0035—05[DOI编号]10.3969/j.issn.1002—3364.2010.12.035CALCULATIoNoFSTEAMLEAKAGERATEFRoMBALANCINGDISCINHPANDMPCYLINDERSANDITSERRoRANALYSISLIGang,XUJian
3、qun,CAOZuqing,ZHUXiaoling,SHIYongfeng。1.CollegeofEnergyandEnvironment,South—EastChinaUniversity,Nanjing210096,JiangsuProvince,PRC2.Xi’anThermalPowerResearchInstituteCoLtd,XI’an710032,ShaanxiProvince,PRC3.HuadianElectricPowerScienceResearchInstitute,Hangzhou310030,ZhejiangP
4、rovince,PRCAbstract:DirectingagainstthecalculationofsteamleakageratefromsteamsealofthebalancingdiscinHPandMPcylindersofthesteamturbine,amathematicmodelforerroranalysishasbeenestablished热能byintroducingthesteam—temperaturingvariatingmethodandthenumericalcalculationmethod.In基
5、一一一础一一一研一一究誉thetestofsteamleakageratefromsteamsealofthebalancingdiscinHPandMPcylindersofoneSU—percritical600MWsteamturbine。theresultsobtainedfromapplyingabove—mentionedtwomethodsarebasicallyidentical,itshowsthatthenumericalcalculationmethodcanaccuratelyestimatethesaidsteam
6、leakagerate.Basedonthemathematicalmodelerroranalysis,theinfluenceoferrorineachmeas—uredparameterupontheprecisionofsaidsteamleakageratehasbeencalculated.resultsshowthatthetemperatureofreheatedsteamandthetemperatureofexhaustedsteamfromMPcylinderinthesaidmeasuredparametershav
7、ethegreatestinfluenceupontheprecisionofsteamleakageratefromthe收稿日期:2010—03—12作者简介:李刚(1985一),男,安徽人,东南大学能源与环境学院硕士研究生,研读方向为火电机组性能分析及建模仿真。E—mail:lg080278@126.comsteamsea1.Keywords:supercritical600MWunit;steamturbine;HPandMPcylinders;steamsealofthebalancingdisc;steamleakage;ste
8、am—temperaturevariatingmethod;numericalcalculationmethod;thermody—namicbehavior汽轮机热力性能试验是
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