船舶电装预制件制作及电缆贯穿件隔堵工艺

TECHNOLOGYOFCABLEPENETRATION&SEALINGFORSTEELSHIP

防火、水密隔堵Sealing

使用橡皮泥、热缩套管usingofplasticene,thermalshrinktube

舱室内的电缆管使用橡皮泥进行封堵;机舱、露天甲板处的电缆管、填料函等的密封使用热缩套管,居住区域内电气箱上的填料函一般不须封堵。热缩套管施工工艺参照制造厂标准要求如下:

Cablepipeincabinettobesealedwithplasticene;cablepipeandcableglandinengineroomandopendecktobesealedwiththermalshrinktube,thecableglandonelectricalpanelnoneedsealsinaccommodationareanormally.Technologyofthermalshrinktubeshouldbeaccordingtomaker’sstandard.

1.3热缩套管使用说明ManualofThermalshrinktube

(1)根据上表选择合适规格的热缩套管,通常所选热缩管收缩后的内径应小于电缆外径1mm以上,热缩管长度应大于要包覆长度的5-10%。

SelecttheThermalshrinktubeaccordingabovetable,thedimensionofThermalshrinktubeshouldbesmaller1mmthancableoutdiameternormally,lengthoftheThermalshrinktubeshouldbelonger5-10%thanthecoverlength.

(2)在要包覆的电缆部位的两端做上标记,用干净抹布去除灰尘和污物。

Markedthecablebeforeseal,outersheathofcableshouldbecleaned.

(3)必要时可在预热后的电缆部位均匀缠绕上一层热熔胶带(厚度约为0.3mm左右),热熔胶带要压紧

Preheatingtheoutersheathofcable,thenwraponelayerthermalmelttapetightly(thicknessabout0.3mm)ifnecessary

(4)套好热缩套管,定位后用塑料焊枪或喷灯从热缩套管的中部开始沿园周方向加热使其均匀完全收缩,然后由中间往一端逐步加热至完全收缩,端口有热熔胶溢出,一端收缩完全后,用同样的方法加热收缩另一端,注意加热时一定要沿园周方向移动,待完全收缩后依次向外扩展,以免产生皱折和气泡。

Afterfitthethermalshrinktube,usetheblowtorchtoheat.Heatingthemiddlepartofthermalshrinktubeatfirst,whenitshrinkuniformly,thenheatingfrommiddletooneend,afterthermalmelttapeextravasationandshrinkfully,thendotheotherendasthesameway.Thecableandtubeshouldbemovearoundduringheatingtoavoidrumpleandbubble.

(5)热缩套管收缩后,再重复加热一遍,使表面光滑平整,整个加热过程要快速移动塑料焊枪。

Reheatingonceagainaftershrinkfully,duringwholeprocess,pleasemovetheblowtorchquicklytokeepthesurfacelubricityandtoavoidtemperaturetoohigher.

(6)在大、小头按连处,若尺寸相差过大或有尖锐角过渡,可在小头一端尺寸较小的热缩管,用第(5)条的方法先使其收缩好,再套上另一根热缩管。或用热熔胶缠绕紧,使其圆滑过渡,再套热管。

Forthereducer,ifdimensiondiscrepancyistoolargeorthereisacuitycornertransition,fittedonesmalldimensiontubeorthermalmelttapeonthesmallendatfirst,thenusethebigsizethermalshrinktubecoverthewholepart.

(7)若有弯角,应先从弯角处开始加热热缩管,使其先完全收缩后再向两边扩展。

Ifthereisbendedcorner,itshouldbeheatingthermalshrinktubefromthebendedparts,thenextendtobothsides.

(8)待热缩管完全冷却后方可进行下一步操作,最好冷却时间在15分钟以上。

Afterthermalshrinktubecoolingfully,itcanbedonenextoperation;itisbetterthecoolingtimeoverthan15minutes.

2耐火电缆框(筒)的隔堵工艺SealingTechnicalforfireproofpenetration

2.1准备工作PrepareWorking

2.1.1检查主要材料的出厂合格证件是否齐全

Checktherelativecertificateofthematerials.

2.1.2如对保管的或来料质量有疑问,可进行小样检验,取少量填料样品,按规定比例,将A、B二组份混合调匀,如产品一天内不固化,即为失效

Ifyoudoubtthequalityofthestuff,pleasedothesampletest,accordingproportion,mixpartAandpartB,ifitcannotsolidifyinoneday,itmustbenoused.

2.1.3按照相关图纸将贯穿件内部的电缆敷设齐全,整理平直并保证清洁。

Finishedthecablelayoutaccordingthedrawings,keepstraightandcleaning.

2.2PD100膨胀堵料的施工ConstructionofPD100caulking

2.2.1为灌注液态堵料的需要,先将防火电缆框两端或防火电缆筒下端填充膨胀堵料Beforepourthesealingslurry,pleasefittheexpansioncaulkingattheendofpenetration.Forthefire-proofhorizontalpenetration,itisbothend;orfortheverticalpenetration,itisonlylowend.

2.2.2用膨胀堵料填入每根电缆之间以及与贯穿件内壁之间,大的间隙可重叠堵塞,应使堵料与贯穿件端面相平,梳齿面必须向内放置,然后对膨胀堵料喷洒膨胀促进液,约法30分钟后即可封堵开口,灌注密封填料。

Beingundertheconstruction,putPD100caulkingtothespacebetweencablesandtransits,thensprayingexpansionliquidtothecaulking,thecaulkingstartexpandsandafter30minutes,thespacecanbefullyblocked,thenitispossibletopourthesealingslurry.

2.3DMT-W型无机电缆密封填料的施工UsingwayoftheDMTsealing

2.3.1填料的配制DMTsealingconsists

填料的配方包括A、B二个组份,A组份为粉料,B组份为溶液,A组份与B组份的调配比例为6:4(重量比),出厂时已按比例分别装于(A)(B)二个容器内,施工时只需将B组份溶液倒入粉料中调匀后便可使用。

SealingconsistsofApart(powder)andBpart(solution):usuallythemixtureratioofAparttoBpartis6:4.whenitisdispatchedfromthefactory,thesealinghasbeenseparatelypackedintotwo(A)(B)containerswithabovementionedratio.Beingundertheconstruction,putBpartintoApartandmixthemfullyforuse.

2.3.2填料的使用时间Sealingusedtime

填料在-5~40℃配制环境温度下其固化时间为30分钟左右,因此,配料后通常要求在15分钟内用完。

Insurroundingstemperature-5~40℃,themixedsealingwillsolidifiesin30minutes,soitshouldbeusedupwithin15minutes.2.3.3填料的灌注sealingpoured

一般可一次或数次将电缆贯穿件灌满。

Itcanbedoneonetimeorseveraltimes.

灌注方法可以采用自流法或加压法均可,一般采用自流法,对电缆框(筒)如限于施工条件困难,不便采用自流法时,可采用加压法。

Mixturesealingshallbepouredbyflowautomaticallyorbyairpressure.Generallyusedthepouredbyflowautomatically,ifitisnoenoughspaceabovethepenetration,itcanbedonebypressure.

压入空气压力保持在0.05Mpa左右,压力过大易造成喷溅。

Airpressureshouldbekeptabout0.05Mpa,thesealingwillsprayifthepressureistoolarge.

2.3.4清洗Cleaning

DMT-W填料和PD100堵料,均为无机材料,施工完毕后工具和人手均可用自来水清洗干净。

BothDMT-WsealingandPD100caulkingareinorganicstuff,thetoolsandhandsshouldbewashedafterendoftheworking.