MFT及吹扫条件.doc

锅炉主燃料跳闸MFTUnit 1 5 / 5序号SL.No.试 验 内 容Experimentation content结 果Result备 注RemarkMFT跳闸条件（FSSS）MFT conditions (FSSS)1炉膛压力高高延时3秒（压力开关3取2，延时3s）Furnace pressure HH (pressure switches, 2/3 , delay 3s)2 炉膛压力低低延时3秒（压力开关3取2，延时3s）Furnace pressure LL (pressure switches, 2/3 , delay 3s)3汽包水位高值（+240mm，3取2，延时2秒）Drum level HHH (+240mm, 2/3, 2-second delay)4汽包水位低值（-240mm，3取2，延时2秒）Drum level LLL( -240mm, 2/3, 2-second delay)5全部送风机跳闸Both FD fans are tripped6全部引风机跳闸Both ID fans are tripped7手动紧急停炉指令（操作员站手动MFT）（2个按钮）Emergency manual trip(2 push buttons) 8炉膛总风量小于30B-MCR风量（延时60秒）Furnace air draft flow is less than 30B-MCR flow, 60-second delay9全部空气预热器停运，延时30s秒Both air preheaters are stopped，30s delay10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）Loss of fire detection cooling air (2/3,open and close delay 60s, Or fire seized the entire cooling fan is not running, after a minute)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）Loss of flame (any coal feeders is running, 3/4 coal fire detection signals not come, 3/4 oil layers are no flame) 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All primary air fans stopped and coal mills system of any layers is running，no 3/4 oil corner valves of any oil layers are on states 13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角阀关闭或燃油跳闸阀关闭）Loss of fuel (all oil corner valves or oil feed fast closing valves closed) and (all coal feeders stopped) and fuel on record(two of twelve oil gun running record )14再吹扫请求(吹扫完成60分钟内全炉膛灭火) Request for re-purge (Furnace fire off during purging completion of 60 minutes)15再热器失去保护Loss protection of reheater16给水泵全停（所有给水泵停反馈，延时3s）All boiler water feed pumps stopped (received all feedback signals of boiler water feed pump stop status, delay 3s) 17汽机跳闸(负荷30%时汽轮机跳闸) Turbine trip (load30%) MFT跳闸后联动设备MFT-initiated interlock equipment operations as follows1关供油快关阀(硬回路)Close oil feed fast valve(hardware logic)3关回油快关阀(硬回路)Close return oil fast valve(hardware logic)4关所有油角阀（硬回路）、吹扫阀Close all oil corner valves (hardware logic) and purging steam valves5退所有油枪和点火枪Return back all oil guns and ignition guns6点火器停止打火（硬回路）Igniters stop igniting (hardware logic)7停所有磨煤机(硬回路)Stop all coal mills(hardware logic)8停所有给煤机(硬回路)Stop all coal feeders(hardware logic)9停一次风机(硬回路)Stop all PA fan(hardware logic)10关减温水总门及电动门Close attemperating water general valve and motor operated valves11关所有磨煤机出口煤粉关断门(硬回路)Close all coal mill outlet coal pulverized cut-off valves(hardware logic)炉膛吹扫条件Furnace purge conditions1MFT条件不存在No MFT signal is present2任一送风机运行At least one FD fan running3任一引风机运行At least one ID fan running4没有一次风机运行No PA fan running5任一空气预热器在运行Any air preheaters is running6燃油快关阀已关Oil fuel fast valve is closed7所有油燃烧器油角阀关All oil burner corner valves are closed8全炉无火焰No fire in furnace9所有磨煤机停All coal mills stopped10所有给煤机停All coal feeders stopped11开二次风门至吹扫位(22/28超过80%)set secondary air valves at purging positionMFT跳闸条件（TRICOUT）MFT conditions (TRICOUT)1炉膛压力高高延时3秒（压力开关3取2，延时3s）Furnace pressure HH (pressure switches, 2/3 , delay 3s)2 炉膛压力低低延时3秒（压力开关3取2，延时3s）Furnace pressure LL (pressure switches, 2/3 , delay 3s)3汽包水位高值（+240mm，3取2，延时2秒）Drum level HHH (+240mm, 2/3, 2-second delay)4汽包水位低值（-240mm，3取2，延时2秒）Drum level LLL( -240mm, 2/3, 2-second delay)5全部送风机跳闸Both FD fans are tripped6全部引风机跳闸Both ID fans are tripped7手动紧急停炉指令（操作员站手动MFT）（2个按钮）Emergency manual trip(2 push buttons) 8炉膛总风量小于30B-MCR风量（延时60秒）Furnace air draft flow is less than 30B-MCR flow, 3-second delay9全部空气预热器停运，延时30秒Both air preheaters are stopped，30 delay10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）Loss of fire detection cooling air (2/3,open and close delay 60s, Or fire seized the entire cooling fan is not running, after a minute)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）Loss of flame (any coal feeders is running, 3/4 coal fire detection signals not come, 3/4 oil layers are no flame) 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All primary air fans stopped and coal mills system of any layers is running，no 3/4 oil corner valves of any oil layers are on states 13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角阀关闭或燃油跳闸阀关闭）Loss of fuel (all oil corner valves or oil feed fast closing valves closed) and (all coal feeders stopped) and fuel on record(two of twelve oil gun running record )14 再吹扫请求(吹扫完成60分钟内全炉膛灭火) Request for re-purge (Furnace fire off during purging completion of 60 minutes)15再热器失去保护Loss protection of reh