MFT及吹扫条件

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1、锅炉主燃料跳闸MFTUnit15/5序号SL.No.试验内容Experimentationcontent结果Result备注RemarkMFT跳闸条件（FSSS）MFTconditions(FSSS)1炉膛压力高高延时3秒（压力开关3取2，延时3s）FurnacepressureHH(pressureswitches,2/3,delay3s)2炉膛压力低低延时3秒（压力开关3取2，延时3s）FurnacepressureLL(pressureswitches,2/3,delay3s)3汽包水位高Ⅲ值（+240mm，3取2，延时2秒

2、）DrumlevelHHH(+240mm,2/3,2-seconddelay)4汽包水位低Ⅲ值（-240mm，3取2，延时2秒）DrumlevelLLL(-240mm,2/3,2-seconddelay)5全部送风机跳闸BothFDfansaretripped6全部引风机跳闸BothIDfansaretripped7手动紧急停炉指令（操作员站手动MFT）（2个按钮）Emergencymanualtrip(2pushbuttons)8炉膛总风量小于30％B-MCR风量（延时60秒）Furnaceairdraftflowislesst

3、han30％B-MCRflow,60-seconddelay9全部空气预热器停运，延时30s秒Bothairpreheatersarestopped，30sdelay10丧失火检冷却风（2/3开关延时60s或火检冷却风机全未运行，一分钟后）Lossoffiredetectioncoolingair(2/3,openandclosedelay60s,Orfireseizedtheentirecoolingfanisnotrunning,afteraminute)11全炉膛灭火（任一给煤机运行，所有煤层3/4无火且油层3/4无火）Lo

4、ssofflame(anycoalfeedersisrunning,3/4coalfiredetectionsignalsnotcome,3/4oillayersarenoflame)12一次风机均停且任一层制粉系统投运且无任一油层4/4油角投运Allprimaryairfansstoppedandcoalmillssystemofanylayersisrunning，no3/4oilcornervalvesofanyoillayersareonstates13燃料丧失跳闸（有油层投运记忆（两个油枪投用过），所有给煤机停运且所有油

5、角阀关闭或燃油跳闸阀关闭）Lossoffuel(alloilcornervalvesoroilfeedfastclosingvalvesclosed)and(allcoalfeedersstopped)andfuelonrecord(twooftwelveoilgunrunningrecord)山东一公司SEPCO运行Operator西北调试Commissioning锅炉主燃料跳闸MFTUnit15/514再吹扫请求(吹扫完成60分钟内全炉膛灭火)Requestforre-purge(Furnacefireoffduringpur

6、gingcompletionof60minutes)15再热器失去保护Lossprotectionofreheater16给水泵全停（所有给水泵停反馈，延时3s）Allboilerwaterfeedpumpsstopped(receivedallfeedbacksignalsofboilerwaterfeedpumpstopstatus,delay3s)17汽机跳闸(负荷>30%时汽轮机跳闸)Turbinetrip(load>30%)MFT跳闸后联动设备MFT-initiatedinterlockequipmentoperatio

7、nsasfollows1关供油快关阀(硬回路)Closeoilfeedfastvalve(hardwarelogic)3关回油快关阀(硬回路)Closereturnoilfastvalve(hardwarelogic)4关所有油角阀（硬回路）、吹扫阀Closealloilcornervalves(hardwarelogic)andpurgingsteamvalves5退所有油枪和点火枪Returnbackalloilgunsandignitionguns6点火器停止打火（硬回路）Ignitersstopigniting(hardw

8、arelogic)7停所有磨煤机(硬回路)Stopallcoalmills(hardwarelogic)8停所有给煤机(硬回路)Stopallcoalfeeders(hardwarelogic)9停一次风机(硬回路)StopallPAfan(har