2023年第9期（总第309期）doi:10.3969/j.issn.1009-3230.2023.09.006应用能源技术29240t/hCFB锅炉密封浇注料失效引起水冷壁管泄漏的分析于季鹏，郭旭超（黄陵矿业煤研石发电有限公司，陕西延安727307）摘要：文中分析了240t/hCFB锅炉密封浇注料失效引起水冷壁管泄漏的情况。在对锅炉进行全面检查时发现,右侧第一片水冷蒸发屏第一根管子顶棚穿墙根部有一约30mm的破口，并且顶棚上还有4根水冷壁管漏点，其旁边有11根水冷壁管已磨损严重。进一步的检查发现,第一片水冷蒸发屏第一根管子破口正前方的顶棚水冷壁管鳍片出现大的裂缝，而其他水冷蒸发屏和屏过顶棚穿墙周围也存在大量细小裂纹。通过分析可得出结论，此些问题主要源于密封浇注料的失效局部脱落，导致水冷壁管泄漏。关键词：密封浇注料；水冷壁管泄漏；CFB锅炉；鳍片断裂中图分类号：TM621.2AnalysisofSealingCastableFailureCausingWaterWallTubeLeakagein240t/hCFBBoiler(HuanglingMiningCoalGanguePowerGenerationCo.Ltd.,Yan'an727307,China)Abstract:Thispaperanalyzesthesituationwherethefailureofsealingcastablein240t/hCFBboilerleadstowaterwalltubeleakage.Duringacomprehensiveinspectionoftheboiler,itwasfoundthattherewasaapproximately30mmholeattherootoftheright-sidefirstwater-cooledevaporatorscreen'sfirsttubeceiling,andtherewerealso4leakingpointsontheceiling,with1ladjacentwaterwalltubesseverelyworn.Furtherinspectionrevealedalargecrackinthefinsofthewaterwalltubeontheceiling,directlyinfrontoftheholeinthefirsttubeofthefirstwater-cooledevaporatorscreen.Numeroussmallcrackswerealsofoundaroundotherwater-cooledevaporatorscreensandtheceilingwheretheypassthroughthewall.Throughanalysis,itcanbeconcludedthattheseissuesprimarilystemfromlocaldetachmentandfailureofthesealingcastable,resultinginwaterwalltubeleakage.Keywords:sealingcastable;waterwalltubeleakage;CFBboiler;finfracture0引言240t/h循环流化床锅炉是我国电站常用的一种锅炉类型。循环流化床(CFB)锅炉作为一种新型的环保高效锅炉，得到了广泛地应用。但是CFB锅炉在长期运营过程中也会出现一些故障，收稿日期：2023-07-02修订日期：2023-08-10作者简介：于季鹏（1985－）,男，本科，工程师，研究方向为循环流化床锅炉运行与检修管理。文献标志码：AYUJipeng,GUOXuchao影...
