ME主机说明书

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1、WaterCoolingSystems709709冷却水系统709WaterCoolingSystemsIndex冷却水系统索引Text目录Index索引DrawingNo.附图编号WaterCoolingSystems冷却水系统709-01V70901-0001CoolingWaterTreatment冷却水处理709-02V70902-0001SeawaterCoolingSystem.MainandAuxiliaryEngines主副机冷却水系统图70901VP70901-0001JacketCoolingWaterSystem汽缸套冷却水

2、系统图70902VP70902-0001CentralCoolingSystem中央冷却系统图70903VP70903-0001PreheatingofJacketCoolingWater预热汽缸套冷却水图70904VP70904-0001WaterCoolingSystems709-01冷却水系统1.General1.概述Pipesystemsvaryconsiderablyfromplanttoplant.Thefollowingschematicpipediagramsareincludedhere,forguidance,toillust

3、ratetheessentialprinciplesofthecircuitsandtheircorrelation.管系随装置不同差异很大。下面的管系示意图可作为指导且说明了管道的基本原理及他们间的相互联系。Foraspecificplant,thecorrectdetailsmustbefoundinthepipingdiagramssuppliedbytheshipyard.对某一特定装置，其详细说明可查阅造船厂所给的管系管路图。2.SeawaterCoolingSystem(Plate90901)2.海水冷却系统(插图70901)Seaw

4、aterisdrawnupthroughtheseaconnection(1)bytheseawaterpump(2).Fromthepump,thewater-flowisdividedintothreeseparatebranches:海水经通海接头（1）由海水泵(2)抽取，泵排出的海水被分成三路:1.throughtheadjustablevalve(3)directtothemainenginescavengeaircooler(s).1经调节阀（3）直接到主机扫气空气冷却器；2.throughthenon-returnvalve(5)t

5、otheauxiliaryengines2经止回阀（5）到副机；3.throughtheadjustablevalve(3)tothelub.oilcoolerandjacketwatercooler,whichareconnectedinseries.3经调节阀（3）到串联联接的滑油冷却器和缸套水冷却器。Otherbranchesmaybeinstalledinparallelwithbranch3:其它支路可以与支路3并联安装–WatersupplytoPTO/RCFlubeoilcooler(ifinstalled).—向PTO/RCF滑油

6、冷却器供水（如果安装）Theseawaterfromtheabove-mentionedbranchesislatermixedagain,andthencontinuestothethermostaticallycontrolled3-wayregulatingvalve(6)attheseawateroverboardvalve(7).上述各支管的海水最后重新汇合，接着流至海水出海阀（7）处的温度调节三通阀（6）.Regulatingvalve(6)iscontrolledbythesensor(8)whichislocatedinthese

7、awaterinletpipe.Thethermostatisadjustedsothatthewatertemperatureatthepumpinletiskeptabove10°C,inordertopreventthelub.oilfrombecomingtooviscousonthecoldcoolingsurfaces(seealso‘AlarmLimits’,Section701-01).调节阀（6）由位于海水进水管处的传感器（8）控制，自动调温阀的调整使得泵进口处的水温保持在10°C以上，以防止冷却面上的润滑油过于粘滞。(参见70

8、1--01章列表中的“报警极限值”)Iftheseawaterinlettemperaturedropsbelowthesetlevel