蒸汽管道保溫怎么做

蒸汽(qi)管(guan)道(dao)保溫(wen)標準蒸汽(qi)保溫(wen)管(guan)適用(yong)于輸(shu)送壓力2.5Mpa，溫(wen)度350℃以下(xia)的蒸汽(qi)管(guan)道(dao)。針對輸(shu)送介(jie)質(zhi)的高(gao)壓、高(gao)溫(wen)特(te)點(dian)，一般(ban)采用(yong)復合(he)保溫(wen)結(jie)構（無機保溫(wen)層和有機保溫(wen)層）進行(xing)保溫(wen);產品外護(hu)管(guan)以高(gao)密度聚乙烯（PE）外護(hu)管(guan)為主(zhu)（也可(ke)按照要求采用(yong)鋼管(guan)外護(hu)管(guan)）。產品結(jie)構及材料(liao)性3233363533e58685e5aeb9339能直(zhi)埋預制蒸(zheng)汽保(bao)(bao)(bao)(bao)溫(wen)(wen)芯(xin)(xin)(xin)管(guan)(guan)(guan)和外(wai)護管(guan)(guan)(guan)為(wei)(wei)脫開結(jie)構。（1）芯(xin)(xin)(xin)管(guan)(guan)(guan)：用(yong)于輸送(song)蒸(zheng)汽的(de)工作(zuo)鋼管(guan)(guan)(guan)。芯(xin)(xin)(xin)管(guan)(guan)(guan)材(cai)料性能、外(wai)徑尺寸、尺寸公差、小(xiao)壁厚符合(he)相關國家或行(xing)業標準，芯(xin)(xin)(xin)管(guan)(guan)(guan)表面去除(chu)鐵銹、油脂、水份等其它污染物(wu)。（2）保(bao)(bao)(bao)(bao)護墊(dian)層(ceng)(ceng)：芯(xin)(xin)(xin)管(guan)(guan)(guan)與保(bao)(bao)(bao)(bao)溫(wen)(wen)層(ceng)(ceng)之(zhi)間防止(zhi)因芯(xin)(xin)(xin)管(guan)(guan)(guan)位移而損傷無機(ji)保(bao)(bao)(bao)(bao)溫(wen)(wen)層(ceng)(ceng)的(de)夾層(ceng)(ceng)。芯(xin)(xin)(xin)管(guan)(guan)(guan)采(cai)用(yong)螺旋焊縫(feng)鋼管(guan)(guan)(guan)、無機(ji)保(bao)(bao)(bao)(bao)溫(wen)(wen)層(ceng)(ceng)為(wei)(wei)硬(ying)質材(cai)料時，設(she)置(zhi)保(bao)(bao)(bao)(bao)護墊(dian)層(ceng)(ceng)。保(bao)(bao)(bao)(bao)護墊(dian)層(ceng)(ceng)一般選用(yong)硅(gui)酸(suan)鋁氈，密(mi)度(du)≤192kg/m3,常溫(wen)(wen)導熱系(xi)數≤0.056w/(m•k);加熱線收(shou)縮率≤4%。（3）無機(ji)保(bao)(bao)(bao)(bao)溫(wen)(wen)層(ceng)(ceng)：耐高溫(wen)(wen)的(de)無機(ji)絕熱材(cai)料所(suo)制成的(de)保(bao)(bao)(bao)(bao)溫(wen)(wen)層(ceng)(ceng)。常溫(wen)(wen)導熱系(xi)數≤0.055w(m•k)根據(ju)不同結(jie)構可(ke)選用(yong)微孔硅(gui)酸(suan)鈣（密(mi)度(du)≤220kg/m3）、