直接空冷设备及系统介绍课件.ppt

1、 设备及系统介绍直接空冷汽轮机排汽管道排汽连接管（1）排汽连接管空冷凝汽器构架（1）空冷凝汽器构架（2）空冷凝汽器构架（3）风机导流环风机入口防护网（1）风机入口防护网风机叶片风机空冷凝汽器支撑梁空冷凝汽器管束空冷凝汽器支架连接空冷凝汽器管束凝结水联箱空冷凝汽器管束与凝结水联箱的连接边排管束空冷凝汽器蒸汽入口管道空冷凝汽器（1）空冷凝汽器的组成直接空冷机组原则性汽水系统图直接空冷机组系统布置图（1）直接空冷机组系统布置图（2）直接空冷机组系统布置图（3）直接空冷机组系统布置图（4）直接空冷机组系统布置图（5）海勒式间接空冷原则性系统图表面式间接空冷原则性系统图常规湿冷机组原则性系统图湿冷机组间

2、接空冷直接空冷机组系统直接空冷凝汽器直接空冷机组控制系统“EVACUATION”主控功能组（GC EVACUATION）“WRP”子组（SGC WRP）凝结水收集系统真空疏水系统汽轮机系统旁路系统/旁路阀闭路冷却水循环系统除盐水系统直接空冷机组控制直接空冷机组排汽压力控制（1）Pressure -deviation mbar Time Setpoint Ps Neutral Zone(NZ)Neutral Zone(NZ)delta delta 0,03bara-pressure controller starts again pressure controller starts again

3、直接空冷机组排汽压力控制（2）Time1,04,0-20mbar+20mbarKpSetpoint凝结水温度控制 ALARM Cond.temp.1 too low Yes Cond.temp.1 15 C adjust.from (15-35)No Cond.temp.2 25 C hystersis 10K adjust.Yes No Acknowledge Alarm Cond.temp.1 or 2 OK!Yes ALARM Cond.temp.2 too low Cond.temp.2 25 C hystersis 10K adjust.No 真空抽气温度控制 A c k n o w

4、 l e d g e A l a r m A ir e x t r a c t io n t e m p.O K!A L A R M A ir e x t r a c t io n t e m p.t o o lo w Y e s A ir e x t r a c t io n t e m p.2 5 C h y s t e r s is 1 0 K a d ju s t.Y e s N o 顺流凝汽器防冻保护Parallel flow condenser protection,example for street 1Ambienttemp.(MAG20 CT901)3CP.f.c prote

5、ctionP.f.c-fans=SpeedreducingMAG30 AN001/002/004/005C.f.c-fan=Speed interlockedlMAG30 AN003NoYesNoKond.temp.2(5 1LCA06 CT001)20 CNoNoYesC.f.c-Fans=quit fan-reducingPressure controller active againMAG30 AN001/AN002/AN004/AN005NoYesNoCounterflow prot.activateP.f.c.fans are interlocked intheir speeds f

6、rom the C.f.cprotectionCond.temp left(MAG30 CT001)orCond.temp right(MAG35 CT001)25 CK1NoYesCond.temp.left(LCA30 CT001)25 C%min.Control.output1min.10%NoPer minute 10%is sub-tracted from the stored controller output value torun down the fans step by step to the next lower speed.Per minute 10%of curren

7、tcontroller output value is added,to run up the fans step by step to the next higher speed until theformerly stored controller outputvalue is reachedCond.temp.right(LCA35 CT001)25 CAcknowl.AlarmCond.temp.left OK!(LCA35 CT001)逆流凝汽器防冻保护Counter flow condenser prtotection,example for street 1Am bienttem

8、 p.MAG20 CT901 25 C%min.Control.output1min.10%Per minute 10%is sub-tracted from the storedcontroller output value torun down the fans step bystep to the next lower speed.Per minute 10%of currentcontroller output value is added,to run up the fans step by step tothe next higher speed until the formerl

9、y stored controller outputvalue is reached.P.f.c-Fans=quit fan-reducingPressure controller active again MAG30 AN003 Air extraction tem p.MAJ10 CT001 12 CAir extraction tem p.MAJ10 CT001 25 CNoYesNo循环/排液阀控制100%0,0100%2020404060608080Controler OutputPosition ofCirculation Valve.XYPosition of Circulati

10、on Valve XYas a Function of the Controler Output100%0,0100%2020404060708080Controler OutputPosition ofDischarge Valve.XYPosition of Discharge Valve XYas a Function of the Controler Output凝结水箱水位控制 L evel-d eviatio n%T im e L e ve l s e tva lu e neutral Z one(N Z)neutrale zone(N Z)delta delta 真空泵真空泵系统