BLD型锅炉承压管泄漏在线监测系统运行维护安装维护中英文

1、印度古德洛尔2600MW燃煤电站项目专用印度古德洛尔2X600MW燃煤电站项目INDIACUDDALORE2600MWPOWERPROJECTBLD型锅炉承压管泄露在线监测系统BLDOn-lineLeakageMonitoringSystemforPressurizedTubesinBoiler（安装保护说明书）（InstallationandMaintenanceManual）SUBMITTEDBY东北电院开元科技有限企业NortheastChinaInstituteofElectricPowerEngineeringKaiyuanSci&TechCo.Ltd目录Contents2600MW

2、错误!不决义书签。系统安装SYSTEMINSTALLATION11.1安装构造INSTALLATIONSTRUCTURE11.2测点安装INSTALLATIONOFOBSERVATIONPOINTS2声导管构造StructureofSoundMeatus3测点安装地点InstalledLocationofobservationpoints4测点开孔方法TheMethodofBoringHole6声导管安装方法TheMethodofInstallingSoundMeatus9声导管的保护MaintenanceofSoundMeatus10传感器的安装Installationofthetransd

3、ucer111.3电缆安装INSTALLATIONOFCABLE12接线盒的安装InstallationofJunctionbox12电缆及接线CableandConnection131.4系统安装接线SYSTEMCONNECTION14系统接线SystemConnection14协助信号AuxiliarySignals151.5防腐清灰装置CLEANINGDEVICE16安装方案InstallationScheme16技术要求TechnicalRequest17技术规(仅供参照)TechnicalSpecification(ForReference)181.6软件安装INSTALLATION

4、OFSOFTWARE18系统调试SYSTEMDEBUGGING11.7调试准备：PREPAREFORDEBUGGING:1调试条件ConditionofDebugging1开启系统TurnontheSystem1防腐清灰系统风量调整AdjustmentofCleaningSystem11.8初步伐试PRIMARYDEBUGGING2封闭报警CloseAlarm2调整总因子AdjustTotalFactor3调整流量因子AdjustFlowFactor4设定采样间隔SetSamplingInterval51.9参数调试PARAMETERSDEBUGGING5自动生成警界限Auto-generat

5、ionforAlarmLine5手动调整警界上线ManualAdjustmentofUpperLimitofAlarmLine6手动调整警界下线ManualAdjustmentofLowerLimitofAlarmLine8手动调整基础噪音ManualAdjustmentofBasicNoise8通道参数统调ChannelParametersCentralizedAdjustment91.10调试中的几个问题SEVERALPROBLEMSINDEBUGGING10保护检修参照MAINTENANCEANDREPAIRREFERENCE11.11监测主机保护MONITORINGHOSTMAINTE

6、NANCE1前、后边板说明ExplanationofFrontPanelandBackPanel1监测主机部构造Internalstructureofmonitoringhost3传感器及引线TransducerandDown-lead41.12常有故障的办理DEALWITHCOMMONFAILURES61.13器件型号说明THEEXPLAINOFTHETYPEOFDEVICE9附图APPENDIXDRAWING11、监测机柜构造图THESTRUCTUREOFMONITORINGCABINET12、盘电气接线图THEELECTRICCONNECTIONINPLATE23、监测主机箱插件表MON

7、ITORINGHOSTPLUG-INTABLE34、单台炉测点部署图LAYWATCHPOINTSDIAGRAM65、系统单元接线图UNITCONNECTIONDIAGRAM7系统安装SystemInstallation锅炉承压管泄露在线监测系统，是一套专门为实时发现锅炉“四管”泄露（漏）事故而设计的“计算机在线监测系统”，该系统主要分为就地检测部分和操作监测部分。BLDTypeOn-lineLeakageMonitoringSystemforPressurizedTubesinBoiler,isa“on-linemonitoringcomputerwhich”isdesignedspecifi

8、callyfordetectingleakage(leakageinside)ofTubes”ofboilerintime.Thesystemincludes:groundedmonitoringpartandoperationmonitoringpart.系统的就地检测部分安装在锅炉现场，操作监测部分则集成在监测机柜中，安装在单元控制室或电子设施间。Groundedmonitoringpartisinstalledatboileronsite;operationmonitoringpartisintegratedinmonitoringcabinet,installedinunitcontr

9、olroomorelectronic-equipmentroom.1.1安装构造InstallationStructure整个系统的就地检测部分包括测点声导管、一体化传感器、就地接线盒、就地信号电缆以及防腐清灰装置等。操作监测部分则包括工控计算机、彩色监视器、监测系统主机、彩色打印机以及系统监测机柜等。Groundedmonitoringpartincludes:soundmeatusofobservationpoints,integratedtransducer,groundedjunctionbox,groundedsignalcableandanticorrosivecleaningde

10、vice,etc.Operationmonitoringpartincludes:industrialcontrolcomputer,colormonitor,monitoringsystemhost,colorprinterandmonitoringcabinetetc.系统安装构造如图1.1所示。Installationstructureseefigure1.1:显示器BLD-6型泄露监测锅炉Display主机本体BLD-6MonitoringxroeBoiler机盒bcrHostn器udeost主i管e线t感nhatnra打印机sut机o接j传d导cHdedPrinter算edndn声u

11、nuo计uoS就o就r锅炉rGG本体键盘、鼠标协助信号AuxiliarySignalBoilerKeyboard,Mouse操作监测部分就地监测部分OperationMonitoringPartGroundedMonitoringPart图1.1锅炉泄露监测系统安装构造框图Figure1.1Monitoringsysteminstallationstructure锅炉承压管泄露在线监测系统的全套设施为名贵仪器，在安装搬运过程中，应尽量注意预防冲击和振动，免得系统设施产生破坏，造成不应有的损失。Thewholeequipmentsofthemonitoringsystemareveryexpen

12、sive.Duringtransportandinstallation，concussionandshakeshouldbeavoided,soasnottodamagedandavoidunnecessarylosses整套设施应使用一组独自额定热工供电电源，电压240V1A，50HZ,该电源应引入监测机柜中的端子排上。Thewholeequipmentusesasingleratedthermalpowersupply;thespecificationis240Vand1A.50HZ.Thepowershouldbeplacedonterminalstripinmonitoringcabi

13、net.1.2测点安装InstallationofObservationpoints锅炉承压管泄露在线监测系统的测点安装，可分为声导管和传感器两部分，其中重点在于声导管的安装。Installationofobservationpointsofthemonitoringsystemincludes:soundmeatusandtransducerpart.Thekeypointrestswithinstallationofsoundmeatuspart.声导管构造StructureofSoundMeatus声导管用于从炉传达噪声信号至传感器。过去由?603.5mm钢管束成，分为J型声导管和Y型声

14、导管，其构造见图1.2和图1.3。SoundMeatusisusedfortransmittingnoisesignalfromfurnacetotransducer.Usuallyitismadeofsteeltubewhichis?603.5mm.ItincludesJ-SoundmeatusandY-Soundmeatus,seefigure1.2andfigure1.3.（1）J型声导管构造StructureofJ-SoundmeatusJ型声导管主要用于非水平烟道的测点，其构造见图1.2。图中白钢套的作用是向上搬动露出开孔，经过此孔清理声导管前端的积灰或结焦,还能够适看作看火孔用,此

15、孔平常处于封闭状态。J-soundmeatusisusedforobservationpointsofnon-levelflues;itsstructureisshowninfigure1.2.Steeltubeistheroleofexposingholewhilemovingup.Thesoundmeatuscanbecleanedthroughthishole.Italsocouldbeseenasfireholewhennecessary;itisusuallyclosed.可搬动白钢套Steeltube870图1.2J型声导管构造Figure1.2J-Soundmeatus（2）Y型

16、声导管构造StructureofY-Soundmeatus锅炉为平衡通风系统，水平烟道地区易发生正压，正压使烟气进入声导管后在低温结露化合成硫酸，使传感器很快腐化，同时声导管前端易积灰。Boilerisabalancedventilationsystem.Levelflueiseasytoproducepluspressure,andthepluspressuremakesfluegasentersoundmeatus;thefluegasbecomessulfuricacidatlowtemperature,andmakestranduceretchedquickly,atthesameti

17、me,itiseasytopileupashinthefrontofsoundmeatus.为预防腐化和积灰，在水平烟道地区采用图1.3Y型构造声导管。这种构造声导管有一个气源入口，经过它不断的送入来自锅炉送风机出口的风，用来抵消来自炉膛部的正压，进而起到防备传感器结露造成的腐化，以及防备声导管前端堵灰的作用。Inordertoavoidbeingerodedorpilingupash,Y-Soundmeatusisusedatthelevelfluepart,seefigure1.3.Y-soundmeatushasanentranceforairsource;airfromtheoutle

18、tofforceddraughtfan,issentthoughconstantlywhichisusedtocounteractpluspressurefromfurnace.Inthisway,thetransducercanbepreventedfrombeingcorrodedandpilingupash.A?9-4Hole法兰Flange102?603.5?气源入口700EntranceofairAsourceDirectionA图1.3Y型声导管构造Figure1.3Y-Soundmeatus测点安装地点InstalledLocationofobservationpoints声导管

19、安装地点由传感器有效监测半径确定，原则为612m。部署传感器的数量应保证对全炉承压受热面泄露进行有效的监测，且监测应做到无盲区。Thelocationofsoundmeatusisdecidedbytheeffectiveradiusoftransducermonitoring,usuallyitis612m.Thenumberoftransducershouldensurethatallheatingsurfacesleakagecanbedetected,andensurethattheresnoblindspace.由于锅炉型号的不同样、构造的不同样、安装工艺的不同样以及锅炉安装地区的不

20、同样，因此，测点地点和数量也不同样，详细地点应依照锅炉的详细情况而设计，拜会测点地点图（附图）。Becauseofdifferentboilertypes,structures,installationtechniquesandlocationsoftheboilers,thenumberandlocationofobservationpointsshouldalsobedifferent.Specificlocationshouldbedesignedaccordingtodetailsofboiler，seeattachedfigure.钢梁Steelgirder00炉墙3Furnacew

21、all0001清灰孔Cleaninghole45O顶棚Top-roof图1.4侧墙与顶棚声导管安装表示图Figure1.4Theinstalledlocationofsoundmeatusonsidewallsandtop-roof测点部署应依照以下原则：Principlesofinstallinglocationofobservationpointsshouldobservetheseprinciples：（1）传感器有效监测半径为612m，预防监测出现盲区。1）Inordertoavoidblindspace,theeffectiveradiusoftransduceris612m.（2）

22、安装角度除了顶棚外其余J型声导管为仰角45O，见图1.4；Y型声导管为仰角30O。测点上部要留有足够空间。2）InstalledangleofJ-soundmeatusisanelevationof45excepttop-room，seefigure1.4.InstalledangleofY-soundmeatusisanelevationof30.Enoughspaceshouldbekeptatupsideofobservationpoint.（3）测点地点要有走台，以便于保护。（3）Platformshouldbelocatedneartheobservationpointformain

23、tenance.（4）测点确定应避开吹灰器和有压缩风吹扫的其余测点。4）Observationpointshouldbekeptawayfromsootblowerandotherobservationpointswhichareblownbycompressionair.（5）水冷壁地区的测点应尽量利用看火孔、人孔门或闲置不用的其余测点。5）Theobservationpointsnearthewater-cooledwallshouldmakeuseoffireholes,manholesorotherunusedobservationpoints.测点开孔方法TheMethodofBor

24、ingHole（1）水冷壁利用看火孔上方三角区开孔方法1）Boringholeonwater-cooledwallmakinguseoftriangleareaabovethefirehole.大容量锅炉过去为膜式水冷壁，水冷壁间距较小，应尽量利用原有备用吹灰孔、看火孔、人孔门等上方的三角区，减少工作量，预防弯管开孔而破坏水冷壁的原构造。Thelargecapacityboilerusuallyismembranetubewall;spacebetweenwater-cooledwallsistoosmall,sothetriangleareabovethesootblowinghole,fi

25、reholeandmanholeshouldbeusedasmuchaspossibleinordertoreducetheworkload;boringholeonsyphonshouldbeavoidinordertoprotectthestructureofwater-cooledwall.应当注意：正在应用的吹灰器孔不能够利用。Note:Thesootblowerholewhichisinusecannotbeutilized.声导管炉墙SoundmeatusFurnacewall看火孔、备用吹灰器孔或人孔门或人孔门Firehole,sootblowerholeormanhole图1.

26、5水冷壁利用看火孔上方三角区开孔表示图Figure1.5Themethodofboringholewhichmakesuseoffireholeonwater-cooledwall水冷壁上的原有开孔均有较大的裕度，完好能够利用原开孔上方的安闲三角区安装声导管，见图1.5。Theresusuallyenoughsurplusonoriginalholesonwater-cooledwall,sothetriangleareaabovetheoriginalholescanbeusedforinstallingsoundmeatus,seefigure1.5.（2）水冷壁弯管开孔方法2）Theme

27、thodofboringholeonthesyphonofwater-cooledwall当水冷壁必定弯管开孔时，其详细开孔方法可拜会图1.6图。Whenboringholeonwater-cooledwallisnecessaryonsyphon，themethodseefigure1.6.鳍片开孔FinnedholeA-AAA图1.6水冷壁弯管开孔表示图Figure1.6Themethodofboringholemakinguseofsyphononwater-cooledwall（3）水冷壁鳍片开孔方法3）Themethodofboringholemakinguseoffinnedhol

28、eofwater-cooledwall若是水冷壁测点没有相应的看火孔等可利用，过去锅炉水冷壁管间距较小，考虑到安全因素，则采用在水冷壁鳍片上开窄孔的方式。竖向构造水冷壁在相邻的鳍片上开两条长的矩形孔，宽度按鳍片实质尺寸。利用方箱过渡进行满焊，再将声导管安装到方箱上。见图1.7。Iftherenosfireholeonwater-cooledwallcanbeusedasobservationpoint,usuallythespacebetweenwater-cooledwalltubesisnarrow;inviewofsafefactor,finnednarrowholeonwater-co

29、oledwallcanbebored.Tworectangularholesareboredoncontiguousfinsofverticalwater-cooledwall,andwidthisthesamewithfinswidth.Makinguseofboxastransitionforfulljointing,thensoundmeatuswillbeinstalledonthebox.Seefigure1.7.水冷壁管Water-cooledwalltube370装传感器Installtransducer鳍片开孔球阀BallvalveFinnedhole300可搬动套筒Sleev

30、etubeBox方箱2mm图1.7利用水冷壁鳍片开孔安装声导管Figure1.7Themethodofboringholewhichmakesuseoffinnedholeonwater-cooledwall（4）包墙过热器开孔方法（4）Boringholemakinguseofenclosure-wallsuper-heater锅炉包墙过热器节距较大，安装声导管时一般不需弯管，只要将鳍片开孔即可。鳍片开孔时在保证过热器安全的前提下，尽可能使其与声导管口径同样，当鳍片间距小于声导管径时，鳍片开孔为一椭圆孔，同时将声导管前端适合压扁。开孔方法见图1.8。Theresbroadspacebetwe

31、enenclosure-wallsuper-heaters,usuallysiphonisnotneededtoinstallsoundmeatus,andfinnedholeisalreadyenough.Whilethesafetyofsuper-heaterisguaranteed,thecaliberoffinnedholeshouldbethesameassoundmeatusscaliber;whenthespacesbetweenfinsislessthanthesoundmeatusinternaldiameter,finnedholeisboredelliptical,att

32、hesametimethefrontofsoundmeatusshouldbemadeflattofitthehole,seefigure1.8包墙管Enclosure-walltube鳍片开孔声导管SoundmeatusFinnedhole焊接Jointing图1.8利用包墙壁鳍片开孔安装声导管Figure1.8Themethodofboringholewhichismakinguseofsuper-heaterofenclosure-wall声导管安装方法TheMethodofInstallingSoundMeatus（1）侧墙声导管安装方法：（1）Themethodofinstallin

33、gsoundmeatusonside-wall:侧墙声导管斜段长度大于700mm，现场安装确定实质应留长度。Thelengthofbeveledgeofsoundmeatusonside-wallshouldbebiggerthan700mm;actuallengthisdecidedduringinstallation.声导管的安装原则应保证其上部法兰盘便于安装及检修传感器。法兰盘上部传感器安装高度为大于300mm（见图1.4）。Installingsoundmeatusshouldensuretheconvenienceofinstallingandmaintainingthetransd

34、ucer.Theinstallingheightabovetheflangeshouldbemorethan300mm(seefigure1.4).安装声导管时应保证声导管根部与水冷壁平齐，不同样意声导管伸入水冷壁侧。Wheninstallingsoundmeatus,thehemlineofsoundmeatusandwater-cooledwallshouldbekeptatthesamelevel.Itisntallowedthatsoundmeatusisinsertedintowater-cooledwall.声导管与包墙护板满焊，固定可靠。全部侧墙声导管安装时型声导管与侧墙呈45角

35、（仰角45，）Y型声导管则仰角为30角，以预防运行时积灰拥挤声导管通道，影响正确报警。声导管与侧墙相对地点见图1.4左图。Soundmeatusandenclosure-wallarefullweld,fixedandcredible.AllangelsbetweenJ-soundmeatusandsidewallare45o(elevationsare45o),elevationanglebetweenY-soundmeatusandsidewallare30o,inordertoavoidashblockingsoundmeatusandaffectingaccuratealarm,see

36、figure1.4ontheleft.（2）侧包墙声导管安装方法：（2）Themethodofinstallingsoundmeatusonside-enclosure-wall：侧包墙过热器声导管安装方法基本与图1.4同样，鳍片开孔为一椭圆孔，与护板满焊。Themethodofinstallingsoundmeatusonside-enclosure-wallsuper-heaterisbasicallythesameasfigure1.4,finnedholeiselliptical;soundmeatusandprotectingboardarefulljointing.详见安装施工方案

37、Detailsseeinstallationscheme.（3）顶棚声导管的安装方法：（3）Themethodofinstallingsoundmeatusontop-roof：顶棚声导管的前端直段应依照保温层厚度确定，见图1.4右图。保温层外声导管直段长度不小于1000mm，能够用同种类的钢管延伸连结。Thefrontstraightpartofsoundmeatusontop-roofshouldbedecidedaccordingtothicknessofthermalinsulatinglayer,seerightfigure1.4.Thelengthofsoundmeatusouts

38、ideofthermalinsulatinglayershouldnbetlessthan1000mm,steeltubeofthesametypecanbeusedforextention.声导管的保护MaintenanceofSoundMeatus运行时期应如期清理积灰及结焦，保证声导管的畅达，当计算机显示声导管堵灰信息时，应实时翻开清灰孔检查堵灰情况并进行清灰办理。Cleaningshouldbetakenperiodicallyduringoperationinordertoensurethatsoundmeatussareexpedited.Whencomputerdisplayst

39、heinformationofashblockage,shouldopenhole,checkashblockingandcleaningshouldbetakenassoonaspossible.锅炉大小修时期应检查声导管焊接部分可否零散或产生裂纹。Duringcheck-upperiod,cracksonthemeatusshouldbechecked.传感器的安装Installationofthetransducer传感器的外型如图1.9所示，是一个带有法兰盘的柱体。安装时，将传感器的法兰盘与声导管的法兰盘瞄准，中间再加上3mm厚的石棉垫或3mm厚的耐热橡胶垫，尔后用M830的螺栓固定好

40、即可。Theexterioroftransducerseefigure1.9,itisacolumnwithflange.Duringinstallation,maketheflangeoftransduceraimattheflangeofsoundmeatus,adding3mmasbestospador3mmovenproofrubbermatinthemiddle,thenfixedbyM830bolt.图1.9传感器外型图Figure1.9Theexterioroftransducer由于传感器的法兰盘是采用绝缘资料制成的，因此，螺栓要加平垫和弹垫，注意螺栓不要拧的过紧，以防备电木法

41、兰变形。Becauseflangeoftransducerismadeofinsulatedmaterial,boltshouldbeunderlaidbyflatmatandspringmat.Makesuretheboltisntscrewedtootighttoavoidflangebeingdistorted.改换传感器时，先拧下航空插头，再卸掉四个螺栓，换上新的传感器再将航空插头接上即可。Whentransducerisbeingreplaced,demounttheavigationplugandotherfourboltsfirst,thenexchangenewtransduc

42、erandconnecttheaviationplug.传感器为名贵元件，应严格预防振动，更不能够用任何物品敲打，以预防造成不应有的损失。Transducerisexpensive,shakingorbeatingshouldbeavoidedtopreventloss.1.3电缆安装Installationofcable就地部分的安装除声导管和传感器以外，还包括电缆敷设、接线盒的安装。Installationofgroundedpartincludeslayingcablesandinstallingjunctionbox,inadditiontoinstallingsoundmeatusa

43、ndtransducer.接线盒的安装InstallationofJunctionbox接线盒的安装数量为4个，采用20线左右的热工信号端子箱。Thenumberofjunctionboxesusuallyis4,usingthermalsignaljunctionboxwithabout20threads.端子箱的地点一般应凑近所要接入的全部测点，并且尽量凑近热工电缆走线槽或电缆桥架。锅炉的甲、乙两侧适合地点各放一个，在尾部烟道测点周边放置一个，在水平烟道处放置一个。Thelocationofjunctionboxshouldbeclosetoallofobservationpointwhi

44、chwillbejoined,andplacedasclosetothermalcableslotorcablebridgeaspossible.Putoneboxonbothsidesoftheboiler,onenearobservationpointsoftailflueandoneonthelevelflue.若是用户的锅炉为670吨或更小的锅炉，也能够省却水平烟道的接线盒，将水平烟道的测点就近分别引入甲、乙两侧的接线盒和尾部烟道处的接线盒，甲、乙两测的接线盒地点应相对提高。Iftheboileris670torsmaller,junctionboxoflevelfluecanbesp

45、ared,butthejunctionboxesatfirstandsecondsidesoftheboilershouldbeheightened.电缆及接线CableandConnection本系统现场由接线盒到传感器的电缆采用ZRKVVP41.0的电缆，实质使用中，只取用其中的3芯，另一芯备用。由接线盒到控制柜的电缆采用ZRKVVP6（14、22）1.0的两种电缆。ThesystemonsitebythejunctionboxtothesensorcableadoptsZRKVVP4x1.0cable,inactualuse,onlyuseoneofthethreecore,anothe

46、rcore.Setaside.FromconnectortothecontrolcabinetofcableusingZRKVVP6(14,22)x1.0twokindsofcable.接线盒至控制盘端子排的电缆，采用多芯，其芯数的多少，视接入该接线盒传感器的数量而定，基根源则为：传感器个数21芯公共线+1芯备用。其接线方法可参照图1.10。（注意：为了检修方便公共线以不高出个测点引出一根）Fromjunctionboxtoterminalsincontrolpanel,multi-corecableshouldbeused.Thenumberofcoresisdecidedaccording

47、tothenumberoftransducersbeingconnected.Theprincipleisthatthenumberoftransducers21commonthread+1sparethread.Themethodofconnectingisshowninfigure1.10.(Note:inordertomakeoverhaulconvenient,thereshouldbeonecommonthreadforatmost6observationpoints.)rrreeecccuuu器d器d器dsssnnn感a感a感arrr传.12传.3传.号o号o号oNNN1t2t3t

48、ccc.eee接n接n接nnnnoooCCCxob盒n123456789.o接cnuJrecud器sn感art传N.号oNtNce接nnoC去盘内端子排ZRKVVP-1.0(n2+2)GototerminalsincontrolpanelZRKVVP-1.0(n2+2)图1.10接线盒接线表示图Figure1.10Connection1.4系统安装接线SystemConnection系统接线SystemConnection若是用户选择带机柜的监测系统，设施安装构造见附录机柜构造图。如不采用本系统专用机柜则计算机主机与彩色督查器、计算机键盘间应就近放置，主机将有24条电缆接入泄露监测端子排上。一

49、般情况下计算机主机在泄露监测主机上方，这样便于电缆的连结。以上电缆均由厂家向用户供应。Ifuserchoosesthemonitoringsystemwithcabinet,thestructureofinstallationisshowninappendixwithcabinetstructure.Ifuserdoesntchoosecabinet,thehostcomputer,colormonitorandkeyboardshouldbeputtogether.Thereare24cablesconnectinghostwithmonitoringcabinet.Usuallyputth

50、ehostonthemonitorhostforconvenientconnection.Cablesbareprovidedbymanufacturer.系统整体安装接线如图1.11所示Thewholeconnection,seefigure1.11.就地电缆炉4墙传感器124路可向上搬动白钢套套注：接线盒至系统监测机柜内端子排的就地电缆采用多芯的热工障蔽电缆。接线盒系XA统接线盒监XB测监接线盒机计柜测打XC算内主印接线盒机端机机XD子排图1.11系统整体接线框图FurnacewallJunctionboxXAtGroundedcableeJunctionib4aboxXBcgnJunct

51、ionitSensorrosboxXCtor124iHnerogtJunctionuemnptinnrmiboxXDoroSleevecansiunCnobemovedupiMmreTNote:groundedcableswhichconnectterminalstojunctionboxadoptmulti-corecables.Figure1.11Thewholeconnection协助信号AuxiliarySignals协助信号和就地的监测信号均应接入相应表盘的盘端子排上，尔后，用截面为0.5mm左右的软导线接入泄露监测主机的插件上。泄露监测系统对协助信号的要求以下表所示。Auxilia

52、rysignalsandgroundedmonitoringsignalsshouldconnectwithappropriateterminalsofdialplate,thenconnectedtoplug-inofmonitorbyflexiblecircuitconductorwhosesectionis0.5mm.Therequestfortheauxiliarysignalsareasfollows:序号名称数量规格连结设施用途或根源numberNameAmountSpecConnectequipmentUseororigin开关量输出对常开（240V5A）光字排或报警器热工信号、

53、泄露报警Switchoutput1pairNormallyopenedLightwordsorannunciatorThermalsignal,contact（240V5A）leakagealarm2开关量输出对常开（240V5A）光字排或报警器热工信号、故障报警Switchoutput1pairNormallyopenedLightwordsorannunciatorThermalsignal,failurecontact（240V5A）alarm3开关量输入对常开（无源）吹灰开关吹灰Switchinput1pairNormallyopenedSootblowingswitchSootblo

54、wingcontact（Passive）4模拟量输入对420流量变送器主蒸汽流量Analoginput1pair420FlowtransducerMainsteamflow5网线对计算机与MIS或DCS、SIS系统Networkline1pairJoinComputerwithMIS,DCSorSIS1.5防腐清灰装置CleaningDevice水平烟道部分经常会出现正压情况，炉正压易使声导管积灰，拥挤声音传播的通道。烟气遇低温而凝固出的水分与烟气中的二氧化硫反响生成硫酸，对金属表面造成的腐化称作“低温腐化”，凝固的水份还增加了灰的附着力进而加剧了声导管的堵灰，为解决这一问题，我们设计了防腐清

55、灰系统。Levelfluepartoftenproducespluspressure,whichmakessoundmeatusblockedeasily,congestedthetunneloftransmitssound.Coagulatemoistureisgeneratedwhenfluegasmeetslowtemperature.Themoisturecreatessulfuricacidwithsulfurdioxideinfluegas.Thesulfuricacidleadstosurfacecorrosiononthemetalwhichiscalled“lowtemper

56、aturecorrosion”The.moisturealsoincreasesadhesionofash,whichmakesashblockingofsoundmeatusevenworse.Tosolvetheproblem,thecleaningdeviceisdesigned.安装方案InstallationScheme单个测点通风声导管的组合连结方法见图1.12。Theconnectionofsingleobservationpointofventilatedsoundmeatus,seefigure1.12.?89风源母管焊接?89airsourcemaintubeJointin

57、g?60支路延伸管（此管能够按环境需要加长）?60spurtrackextendedtube(couldbeextended)600（指两金属管间距离）Y型声导管软管与金属短接以螺纹Y-soundmeatus球阀形式连结metalhasBallvalve300Softtubewithscrewthreadconnection图1.12Y型声导管与风源母管道连结表示图Figure1.12Y-soundmeatusconnectswithairsourcemaintube来自送风机出口的风经过风源母管向水平烟道地区的清灰声导管连续通入空气，抵消锅炉正压，其整体连结方式参看图1.13。Theairf

58、romdraftfaninsufflatesairtocleaningsoundmeatusatlevelfluepartbyairsourcemaintube,inordertocounteractpluspressureofboiler.Itsconnectionmode,seefigure1.13.口naf机tfa风r送dFm自oEr来FDACB序名称规格数量备注SequenceNameSpecAmountRemarkA送风母管893Air-supplymaintubeBY型声导管603厂家供应Y-soundmeatusManufacturerprovideC连结软管60厂家供应Conn

59、ectingsofttubeManufacturerprovideD球阀DN50厂家供应BallvalveManufacturerprovideE风量调治阀1AirAdjustmentValveF送风母管893Air-supplymaintube图1.13水平烟道声导管防腐、清灰管道部署表示图Figure1.13Placementofanticorrosive,cleaningtubes技术要求TechnicalRequest（1）保证送风不中断；（1）Keepair-supplyconstantly;（2）风量调治阀与球阀调整好后应固定妙手柄,防备误封闭而中断送风；（2）Afteradjus

60、tingtheballvalveandairadjustingwalve,thehandleshouldbefixedupinordertopreventfalsecloseandstopair-supply;（3）为了方便安装软管，上、下两个金属管应在与锅炉垂直的一个竖直平面，支路延伸管能够适合加长，要适应调整胶管安装长度的要求，使插接软管的两个金属管间距离不大于0.6米（软管长1米），预防锅炉热态变型将软管拉开。关于声导管上方有钢梁的能够依照环境要求改变声导管安装方法，胶管要求留必然裕度，用喉箍固定。（3）Inordertoinstallsofttubeconveniently,upper