第40卷第4期压力容器2023年4月doi:■■■■■■■■■■■■■■■■■■■■■■■■10.3969/j.issn.1001-4837.2023.04.012制造与安装核电钢质安全壳形位公差的控制方法谢春法,刘虎,尹清斌,苗明华(上海核工程研究设计院股份有限公司,上海200233)摘要:核岛钢质安全壳是一个自由站立的圆柱形钢制压力容器,其拼装存在单块弧板质量大、精度要求高、受环境影响大,并且影响后续贯穿件、环吊安装质量等特点,需要采取稳定可靠的公差控制措施来解决大尺寸筒体组对时错缝过大、周长超差、温度影响、吊装变形等关键问题。通过对钢质安全壳施工工艺过程中误差来源的分析,推导预估弧板拼装成模块后公差精度相关计算公式,预设拼装钢质安全壳单块弧板时的公差控制精度,实现模块组对精度满足设计要求的方法,预防因弧板拼装误差累积导致模块组对不符合项出现的问题,使核岛钢质安全壳制造过程各工序形位公差满足设计要求,并用实例进行了说明和验证。关键词:钢制安全壳;拼装;变形控制;安装精度;形位公差中图分类号:TH49;TL364.3文献标志码:BShapeandpositiontolerancecontrolmethodofnuclearpowersteelcontainmentXIEChunfa,LIUHu,YINQingbin,MIAOMinghua(ShanghaiNuclearEngineeringResearch&DesignInstituteCo.,Ltd.,Shanghai200233,China)Abstract:Nuclearcontainmentisafree-standingcylindricalsteelpressurevessels.Theinstallationofnuclearislandsteelcontainmentvesselhasthecharacteristicsofheavymassofsinglearcplate,highprecisionrequirements,greatenvironmentalimpact,affectingthesubsequentthroughpiecesandinstallationqualityofliftingeyes,etc.,soitisnecessarytotakestableandreliabletolerancecontrolmeasurestosolvethekeyproblemssuchastoolargestaggeredseams,perimeterout-of-tolerance,temperatureinfluence,andliftingdeformationduringthelargesizecylinderpairassembly.Basedontheanalysisoftheerrorsourcesintheconstructionprocessofsteelcontainment,therelevantcalculationformulaforestimatingthetoleranceaccuracyafterthearcplateswereassembledintoamodulewasderived,bypresettingthetolerancecontrolaccuracyduringtheassemblyofasinglearcplateofthesteelcontainment,themethodthattheaccuracyofmoduleassemblymeetsthedesignrequirementswasrealized,andtheproblemsofnoncon...