船舶電裝預(yù)制件制作及電纜貫穿件隔堵工藝

TECHNOLOGYOFCABLEPENETRATION&SEALINGFORSTEELSHIP

防火、水密隔堵Sealing

使用橡皮泥、熱縮套管usingofplasticene,thermalshrinktube

艙室內(nèi)的電纜管使用橡皮泥進(jìn)行封堵;機(jī)艙、露天甲板處的電纜管、填料函等的密封使用熱縮套管,居住區(qū)域內(nèi)電氣箱上的填料函一般不須封堵。熱縮套管施工工藝參照制造廠標(biāo)準(zhǔn)要求如下:

Cablepipeincabinettobesealedwithplasticene;cablepipeandcableglandinengineroomandopendecktobesealedwiththermalshrinktube,thecableglandonelectricalpanelnoneedsealsinaccommodationareanormally.Technologyofthermalshrinktubeshouldbeaccordingtomaker’sstandard.

1.3熱縮套管使用說明ManualofThermalshrinktube

(1)根據(jù)上表選擇合適規(guī)格的熱縮套管,通常所選熱縮管收縮后的內(nèi)徑應(yīng)小于電纜外徑1mm以上,熱縮管長(zhǎng)度應(yīng)大于要包覆長(zhǎng)度的5-10%。

SelecttheThermalshrinktubeaccordingabovetable,thedimensionofThermalshrinktubeshouldbesmaller1mmthancableoutdiameternormally,lengthoftheThermalshrinktubeshouldbelonger5-10%thanthecoverlength.

(2)在要包覆的電纜部位的兩端做上標(biāo)記,用干凈抹布去除灰塵和污物。

Markedthecablebeforeseal,outersheathofcableshouldbecleaned.

(3)必要時(shí)可在預(yù)熱后的電纜部位均勻纏繞上一層熱熔膠帶(厚度約為0.3mm左右),熱熔膠帶要壓緊

Preheatingtheoutersheathofcable,thenwraponelayerthermalmelttapetightly(thicknessabout0.3mm)ifnecessary

(4)套好熱縮套管,定位后用塑料焊槍或噴燈從熱縮套管的中部開始沿園周方向加熱使其均勻完全收縮,然后由中間往一端逐步加熱至完全收縮,端口有熱熔膠溢出,一端收縮完全后,用同樣的方法加熱收縮另一端,注意加熱時(shí)一定要沿園周方向移動(dòng),待完全收縮后依次向外擴(kuò)展,以免產(chǎn)生皺折和氣泡。

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

(5)熱縮套管收縮后,再重復(fù)加熱一遍,使表面光滑平整,整個(gè)加熱過程要快速移動(dòng)塑料焊槍。

Reheatingonceagainaftershrinkfully,duringwholeprocess,pleasemovetheblowtorchquicklytokeepthesurfacelubricityandtoavoidtemperaturetoohigher.

(6)在大、小頭按連處,若尺寸相差過大或有尖銳角過渡,可在小頭一端尺寸較小的熱縮管,用第(5)條的方法先使其收縮好,再套上另一根熱縮管?；蛴脽崛勰z纏繞緊,使其圓滑過渡,再套熱管。

Forthereducer,ifdimensiondiscrepancyistoolargeorthereisacuitycornertransition,fittedonesmalldimensiontubeorthermalmelttapeonthesmallendatfirst,thenusethebigsizethermalshrinktubecoverthewholepart.

(7)若有彎角,應(yīng)先從彎角處開始加熱熱縮管,使其先完全收縮后再向兩邊擴(kuò)展。

Ifthereisbendedcorner,itshouldbeheatingthermalshrinktubefromthebendedparts,thenextendtobothsides.

(8)待熱縮管完全冷卻后方可進(jìn)行下一步操作,最好冷卻時(shí)間在15分鐘以上。

Afterthermalshrinktubecoolingfully,itcanbedonenextoperation;itisbetterthecoolingtimeoverthan15minutes.

2耐火電纜框(筒)的隔堵工藝SealingTechnicalforfireproofpenetration

2.1準(zhǔn)備工作PrepareWorking

2.1.1檢查主要材料的出廠合格證件是否齊全

Checktherelativecertificateofthematerials.

2.1.2如對(duì)保管的或來料質(zhì)量有疑問,可進(jìn)行小樣檢驗(yàn),取少量填料樣品,按規(guī)定比例,將A、B二組份混合調(diào)勻,如產(chǎn)品一天內(nèi)不固化,即為失效

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

2.1.3按照相關(guān)圖紙將貫穿件內(nèi)部的電纜敷設(shè)齊全,整理平直并保證清潔。

Finishedthecablelayoutaccordingthedrawings,keepstraightandcleaning.

2.2PD100膨脹堵料的施工ConstructionofPD100caulking

2.2.1為灌注液態(tài)堵料的需要,先將防火電纜框兩端或防火電纜筒下端填充膨脹堵料Beforepourthesealingslurry,pleasefittheexpansioncaulkingattheendofpenetration.Forthefire-proofhorizontalpenetration,itisbothend;orfortheverticalpenetration,itisonlylowend.

2.2.2用膨脹堵料填入每根電纜之間以及與貫穿件內(nèi)壁之間,大的間隙可重疊堵塞,應(yīng)使堵料與貫穿件端面相平,梳齒面必須向內(nèi)放置,然后對(duì)膨脹堵料噴灑膨脹促進(jìn)液,約法30分鐘后即可封堵開口,灌注密封填料。

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

2.3DMT-W型無機(jī)電纜密封填料的施工UsingwayoftheDMTsealing

2.3.1填料的配制DMTsealingconsists

填料的配方包括A、B二個(gè)組份,A組份為粉料,B組份為溶液,A組份與B組份的調(diào)配比例為6:4(重量比),出廠時(shí)已按比例分別裝于(A)(B)二個(gè)容器內(nèi),施工時(shí)只需將B組份溶液倒入粉料中調(diào)勻后便可使用。

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

2.3.2填料的使用時(shí)間Sealingusedtime

填料在-5~40℃配制環(huán)境溫度下其固化時(shí)間為30分鐘左右,因此,配料后通常要求在15分鐘內(nèi)用完。

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

一般可一次或數(shù)次將電纜貫穿件灌滿。

Itcanbedoneonetimeorseveraltimes.

灌注方法可以采用自流法或加壓法均可,一般采用自流法,對(duì)電纜框(筒)如限于施工條件困難,不便采用自流法時(shí),可采用加壓法。

Mixturesealingshallbepouredbyflowautomaticallyorbyairpressure.Generallyusedthepouredbyflowautomatically,ifitisnoenoughspaceabovethepenetration,itcanbedonebypressure.

壓入空氣壓力保持在0.05Mpa左右,壓力過大易造成噴濺。

Airpressureshouldbekeptabout0.05Mpa,thesealingwillsprayifthepressureistoolarge.

2.3.4清洗Cleaning

DMT-W填料和PD100堵料,均為無機(jī)材料,施工完畢后工具和人手均可用自來水清洗干凈。

BothDMT-WsealingandPD100caulkingareinorganicstuff,thetoolsandhandsshouldbewashedafterendoftheworking.