聚氨酯保溫鋼管安裝需要注意的事項
Attentions to Installation of Polyurethane Thermal Insulation Pipe
聚氨酯保溫鋼管低溫預制直埋保溫管由于聚氨酯硬質(zhì)泡沫保溫層嚴密地粘結在鋼管外皮，隔絕了空氣和水的進入，能起到出色的防腐效果。一同它的發(fā)泡孔都是閉合的，吸水性很小。高密度聚乙烯外殼、玻璃鋼外殼均具有出色的防腐、絕緣和機械功能。因此，任務鋼管外皮很舒服到外界空氣和水的腐蝕。只需管道外部水質(zhì)處置好，據(jù)國外資料引見，低溫預制直埋保溫管的運用壽命可達50年以上，比傳統(tǒng)的地溝敷設、架空敷設運用壽命高3~4倍。
Polyurethane insulated steel tube prefabricated directly buried insulation pipe, because the polyurethane rigid foam insulation layer is tightly bonded to the outer skin of the steel pipe, and keeps the entry of air and water, can play an excellent anti-corrosion effect. Together, its foam holes are closed and its water absorption is very small. High density polyethylene shell and FRP shell have excellent anti-corrosion, insulation and mechanical functions. Therefore, the task steel pipe skin is very comfortable to the outside air and water corrosion. According to foreign data, the service life of low-temperature prefabricated direct-buried insulation pipe can reach more than 50 years, which is 3-4 times longer than that of traditional trench laying and overhead laying.
直埋保溫管道中聚氨酯保溫鋼管其導熱系數(shù)爲：λ=0．013—0．03kcal/m·h·oC，比其他過來常用的管道保溫資料低得多，保溫效果提高4~9倍。再有其吸水率很低，約爲0．2kg/m2。吸水率低的緣由是由于聚氨酯泡沫的閉孔率高達92%左右。低導熱系數(shù)和低吸水率，加上保溫層和里面防水功能好的高密度聚乙烯或玻璃鋼維護殼，改動了傳統(tǒng)地溝敷設供熱管道“穿濕棉襖”的情況，大大增添了供熱管道的全體熱損耗，熱網(wǎng)熱損失爲2%，小于10%的規(guī)范要求。
The thermal conductivity of polyurethane heat preservation pipe in directly buried heat preservation pipeline is: lambda = 0.013-0.03kcal/m.h.oC, which is much lower than other commonly used pipeline heat preservation data, and the heat preservation effect is increased by 4-9 times. And its water absorption is very low, about 0.2 kg/m2. The reason for low water absorption is that the polyurethane foam has a closed porosity of about 92%. Low thermal conductivity and low water absorption, together with insulation layer and waterproof high density polyethylene or FRP maintenance shell, changed the traditional trench laying of heating pipeline "wearing wet cotton jacket", greatly increased the overall heat loss of heating pipeline, heat loss of heating network is 2%, less than the international norms of 10%.
防腐，絕緣功能好，運用壽命長。直埋保溫管由于聚氨酯硬質(zhì)泡沫保溫層嚴密地粘結在鋼管外皮，隔絕了空氣和水的進入，能起到出色的防腐效果。一同它的發(fā)泡孔都是閉合的，吸水性很小。高密度聚乙烯外殼、玻璃鋼外殼均具有出色的防腐、絕緣和機械功能。因此，任務鋼管外皮很舒服到外界空氣和水的腐蝕。只需管道外部水質(zhì)處置好，據(jù)國外資料引見，直埋保溫管的運用壽命可達50年以上，比傳統(tǒng)的地溝敷設、架空敷設運用壽命高3~4倍。
Anti-corrosion, good insulation function, long service life. The directly buried insulation pipe is tightly adhered to the outer skin of the steel pipe because of the rigid polyurethane foam insulation layer, and the air and water entry can be isolated. Together, its foam holes are closed and its water absorption is very small. High density polyethylene shell and FRP shell have excellent anti-corrosion, insulation and mechanical functions. Therefore, the task steel pipe skin is very comfortable to the outside air and water corrosion. As long as the external water quality of the pipeline is well disposed, according to foreign data, the service life of the directly buried insulation pipe can reach more than 50 years, which is 3-4 times longer than that of the traditional trench laying and overhead laying.
占地少，施工快，有利環(huán)境維護和增添施工擾民。直埋供熱管道不需求砌筑宏大的地溝，只需將保溫管埋人地下，因此大大增添了工程占地，增添土方開挖量約50%以上，增添土建砌筑和混凝土量90%。一同，保溫管加工和現(xiàn)場挖溝平行停止，只需現(xiàn)場接頭，可以大幅度延長工期。由于增添了磚、水泥、砂石、余土等的運送，從而增添了施工進程中汽車尾氣排放量、揚塵量、噪聲排放量，從而維護了環(huán)境。
It occupies less land and constructs quickly, which is beneficial to environmental maintenance and disturbs the people. Directly buried heating pipelines do not need to build huge trenches. They only need to bury insulating pipes underground, thus greatly increasing the project area, increasing the amount of earthwork excavation by more than 50%, increasing the amount of civil masonry and concrete by 90%. Together, the processing of insulating pipe and digging ditches on site are stopped in parallel, and the construction period can be prolonged by a large margin with only on-site joints. The transportation of bricks, cement, sand and gravel, residual soil and so on has been added, thus increasing the emission of automobile exhaust, dust and noise in the construction process, thus maintaining the environment.
平安如今除外消費的直埋保溫管，均設有滲漏報警線，一旦管道某處發(fā)作滲漏，經(jīng)過報警線的傳導，便可在公用檢測儀表上顯示出保溫管道滲水、漏水的精確地位及滲漏水平的大小，以便通知檢滲人員迅速處置漏水的管段，確保供熱管網(wǎng)的平安運轉(zhuǎn)。消費的保溫管如今末設滲漏報警線，有待補上這一空白。
Ping'an now has leakage alarm lines for directly buried insulating pipes except for those consumed in China. Once leakage occurs somewhere in the pipeline and is transmitted by the alarm lines, the exact position and leakage level of the insulating pipes can be displayed on the public inspection instruments, so as to inform the inspectors to quickly dispose of the leakage pipelines and ensure the safe operation of the heating network. The leakage alarm line of the international consumption heat preservation pipes has been set up at the end of the day, which needs to be filled in.
In summary, all the above-mentioned Shandong Hipper Pipe Technology Development Co., Ltd. provides, want to know more about polyurethane insulation pipe manufacturers, welcome to pay attention to our website: http://www.qndr49.cn Thank you for your support!
