第37卷第6期2022年12月Vol.37No.6Dec.2022电力学报JOURNALOFELECTRICPOWER文章编号：1005-6548（2022）06-0531-08中图分类号：TM621文献标识码：A学科分类号：47040DOI：10.13357/j.dlxb.2022.063开放科学（资源服务）标识码（OSID）：超临界CFB机组汽动给水泵给水研究印江1，胡万平1，郝铭星2，袁华保峰1，钱正杰1，王鹏程2（1.山西大学，太原030013；2.山西河坡发电有限责任公司，山西阳泉045011）摘要：针对山西某电厂350MW超临界CFB供热机组汽动给水泵在夏季高温下给水不稳定现象，从数据层面分析了其不稳定的主要原因。分析了影响小汽轮机正常工作汽源的相关因素，并在HV阀门（高压调节阀）开启前后时刻对这些因素进行了采集，通过等功率比较分析得出，HV阀门开启前后影响因素中变化较大的为背压，并对此设计了一套用来降低背压的间冷塔喷水减温系统。该喷水降减温系统能在33℃的环境温度下降低背压4kPa左右，有效提高了汽动给水泵的给水稳定性，为相关工程问题的解决提供参考。关键词：350MW超临界CFB机组；小汽轮机；汽动给水泵；降低背压；喷水减温；HV阀StudyontheFeedWaterofSteamFeedPumpofSupercriticalCFBUnitYINJiang1，HUWan-ping1，HAOMing-xing2，YUAN-HUABao-feng1，QIANZheng-jie1，WANGPeng-cheng2（1.ShanxiUniversity，Taiyuan030013，China；2.ShanxiHepoPowerGenerationCo.，Ltd.，Yangquan045011，China）Abstract：Inviewofthephenomenonthatthesteamfeedpumpof350MWsupercriticalCFBheatsupplyunitinapowerplantinShanxiProvinceisinstabilityunderhightemperatureinsummer，themainreasonsforitsinsta⁃bilityfromthedatelevelareanalyzed.Relevantfactorsofaffectingthenormalworkingsteamsourceofsmallsteamturbineareanalyzed，andthedataofthesefactorsiscollectedbeforeandaftertheHVvalve（high-pres⁃sureregulatingvalve）isopened.Thenthebackpressurechangegreatlyamongtheserelevantfactorsthroughequalpowercomparisonandanalysis，soawatersprayingtemperaturereductionsystemofintercoolingtowerforreducingthebackpressureisdesigned.Thewatersprayingtemperaturereductionsystemcanreducethebackpressureabout4kPaunderthehightemperatureenvironmentof33℃andcaneffectivelyimprovethesta⁃bilityofthesteamfeed，anditprovidesareferenceofsolvingrelatedengineeringproblems.Keywords：350MWsuperc...
