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ID:39770560
大小:50.51 KB
页数:3页
时间:2019-07-11
《电气预埋规范》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、电气埋管施工工艺细则Electricalconduitconstructiontechnologyrules1.严禁使用电焊、气焊割管。Strictlyprohibitedinusinggasandelectricweldingcuttingconduit.2.严禁将脚手架作为电缆管使用。Strictlyprohibitedinusingthefolderaselectricalconduit.3.锈蚀严重的钢管不得使用;钢管弯制或安装前应将管口及管内杂物清扫干净,并除去毛刺。Existseriouscorrosionconduitisnotall
2、owedused;themouseoftheconduitastheinnerpartthedebrismustberemovedbeforebendingorinstallation3.电缆管切割采用手工锯或切割机进行切割,并保证切割面平整且不倾斜;切割后必须立即将管口毛刺打磨干净,并打磨管口成喇叭型。Cuttingfortheconduitadoptinginmanualsawormachine,andensurethecuttingsurfacesmoothandnottilt;burringaftercuttingmustbeimmedia
3、tely,andpolishedtypenozzleintohorn.4.电缆管的弯曲半径R≥10D(电缆管外径);弯曲角度≥90°,并尽可能减少90°弯头;电缆管弯制不得出现明显的凹瘪、裂纹、折皱,钢管弯扁程度≤0.1D(电缆管外径)。BendingradiusR≥10D(hereDisconduitoutdiameter);BendingAngle≥90°,andaslessaspossiblethe90°elbow;conduitbendingcannotappearobviousconcave,crack,wrinkle,flatsteel
4、tubebendingflatlevel≤0.1D(hereDisconduitoutdiameter).6.电缆管安装时,每根电缆管弯头数量不得超过3个,90°弯头不得超过2个(埋管长度≥12米,不得多于2个弯头;12米≥埋管长度≥8米,不得多于3个弯头;直管埋设不得大于30米)超过上述标准须增加转接盒。Wheninstallationconduit,theamountofeachconduitelbowshallnotexceed3,elbowwith90°shallnotbemorethan2;theconduitlength≥12m,sha
5、llnotbemorethantwoelbow;Thelengthoftheconduitthatchangedbetween8mand12m,shallnotbemorethanthreeelbow;straightshallnotbemorethan30meters;Ifexceedthestandardmorethanthestandardmustincreasethetransferbox.7.电缆管连接不得对接焊,必须采用短套管;套管长度≥50mm;whenconduitconnectionashortsocketmustbeused,a
6、ndnobuttwelding(exceptspotwelding);thelengthofthesocketmorethan2timesofconduitoutdiameter.电缆管型号Type壁厚(mm)Thickness电缆管外径(mm)Outdiameter.连接套管内径(mm)Socketinner连接套管的长度(mm)LengthdiameterDN253.2533.535≥50mmDN323.2542.343≥50mmDN503.56061≥50mmDN8048889≥50mm8.电缆管连接时,先将套管中间凸台毛刺打磨干净,然后将电
7、缆管插入套管中,电缆管与凸台之间不得留有间隙;连接套管与电缆管两侧均匀电焊4点,并用黑胶布缠绕封实;Whencoupling,thereshouldn’tgapbetweenthetwoconduitandthecounterpartmalocclusionislessthan2mm,counterpartseamshouldbeinthemiddleofthesocket,andthebothsidesalongthecircumferentialweldingsealing,partialcannotweldingmustuseblacktap
8、ewindingsealingwithfastenedironwire;9.电缆管不得在外壁直接点焊加固,加固采用铁丝绑扎
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