高压锅炉给水再循环系统改造

高压锅炉给水再循环系统改造第29卷2011年第6期(总第156期)技术改造与改进高压锅炉给水再循环系统改造曹志军亓德栋蒋庆伟(莱芜钢铁集团能源动力厂莱芜271104)【摘要】针对5oMw发电机组高压锅炉配套高压给水再循环系统存在的管道振动剧烈、再循环高压截止阀寿命短和内漏严重造成给水泵电动机过电流从而制约锅炉负荷等问题进行技术攻关。通过实施泵保护阀改造和再循环管路优化改造等措施，不仅彻底解决了以上问题而且实现了再循环自动控制，为50MW机组满发稳发提供了保障，经济效益和安全效益显著。【关键词】给水再循环系统振动泵保护阀改造ImprovementofHigh-pressureBoilerFeedWaterReeirculationSystemCAOZhi-jun，QIDe—dong，JIANGQing—wei(EnergyPowerFactoryofLaiwuSteelCorporation，Laiwu271104)【Abstract】Sometechnicalproblemsinthehigh—pressureboilerfeedwaterrecirculationsystemfor50MWPowerUnithavebeensolved，suchastheseriousvibrationofpipeline，shorterservicelifeofhigh-pressureshut-ofvalve，seriousinternalleakagewhichcausesthefeedwatermotorovercurrenttorestricttheboilerload，etc．Theimprovementofprotectivevalveandtheoptimizingmodificationofrecirculationpipelinearecarriedouttosolvetheabove-mentionedproblemsandachievetheautomaticcontrolofrecirculation，therebyprovidingtheguaranteeforthestableoperationandpowergenerationtofullcapacityandachievingsignificanteconomicandsocialbenefits