1 降低工程造價(jià).
1. Reduce the cost of construction.
據(jù)有關(guān)部門測(cè)算,雙管制供熱管道,普通狀況下能夠降低工程造價(jià)的25%(采用玻璃鋼做維護(hù)層)和10%(采用高密度聚乙烯做維護(hù)層)左右.
According to the calculation of relevant departments, double-pipe heating pipeline can reduce the cost of construction by 25% (using FRP as maintenance layer) and 10% (using high density polyethylene as maintenance layer) under normal conditions.
2 熱損耗低,節(jié)約能源.
2. Low heat loss and energy saving.
其導(dǎo)熱系數(shù)為:λ=0．013—0．03kcal/m·h·oC,比其他過(guò)去常用的管道保溫資料低得多,保溫效果進(jìn)步4~9倍.再有其吸水率很低,約為0．2kg/m2.吸水率低的緣由是由于聚氨酯泡沫的閉孔率高達(dá)92%左右.低導(dǎo)熱系數(shù)和低吸水率,加上保溫層和外面防水性能好的高密度聚乙烯或玻璃鋼維護(hù)殼,改動(dòng)了傳統(tǒng)地溝敷設(shè)供熱管道“穿濕棉襖”的情況,大大減少了供熱管道的整體熱損耗,熱網(wǎng)熱損失為2%,小于10%的規(guī)范請(qǐng)求.
Its thermal conductivity is: lambda =0.013 - 0.03kcal/m. H. OC, which is much lower than other commonly used pipe insulation materials. The insulation effect is progresses 4~9 times. The water absorption rate is very low. The reason why the water absorption rate of 0.2kg/m2. is low is that the polyurethane foam has a closed porosity of about 92%. Low thermal conductivity and low water absorbability, plus high density polyethylene or glass fibre reinforced plastic with good thermal insulation and water resistance outside. Maintenance shell, changed the traditional trench laying heating pipeline "wearing wet cotton jacket" situation, greatly reduced the overall heat loss of heating pipeline, heat loss of the heating network is 2%, less than 10% of the international norms.
3防腐,絕緣性能好,運(yùn)用壽命長(zhǎng).
3. Anti-corrosion, good insulation and long service life.
由于聚氨酯硬質(zhì)泡沫保溫層嚴(yán)密地粘結(jié)在鋼管外皮,隔絕了空氣和水的滲入,能起到良好的防腐作用.同時(shí)它的發(fā)泡孔都是閉合的,吸水性很小.高密度聚乙烯外殼、玻璃鋼外殼均具有良好的防腐、絕緣和機(jī)械性能.因而,工作鋼管外皮很難遭到外界空氣和水的腐蝕.只需管道內(nèi)部水質(zhì)處置好,運(yùn)用壽命可達(dá)50年以上,比傳統(tǒng)的地溝敷設(shè)、架空敷設(shè)運(yùn)用壽命高3~4倍.
Because the polyurethane rigid foam insulation layer is tightly bonded to the outer skin of the steel pipe, the infiltration of air and water can be isolated. It can play a good antiseptic effect. At the same time, the foamed holes are closed and the water absorbency is very small. The high density polyethylene shell and the FRP shell have good anticorrosion, insulation and mechanical properties. Therefore, the outer skin of the work steel pipe is difficult to be corroded by external air and water. The water quality inside the road is well disposed, and its service life can reach more than 50 years, which is 3-4 times longer than that of traditional trench laying and overhead laying.
4．管道保溫.占地少,施工快,有利環(huán)境維護(hù).
4. Pipeline insulation. Less land occupation, faster construction, favorable environmental maintenance.
直埋供熱管道保溫不需求砌筑龐大的地溝,只需將保溫管埋人公開,因而大大減少了工程占地,減少土方開挖量約50%以上,減少土建砌筑和混凝土量90%.同時(shí),保溫管加工和現(xiàn)場(chǎng)挖溝平行停止,只需現(xiàn)場(chǎng)接頭,能夠縮短工期約50%以上.
Directly buried heat-supply pipelines do not need to build huge trenches for heat preservation, only burying heat preservation pipelines openly, which greatly reduces the construction area, reduces the excavation of Earthwork by more than 50%, and reduces the amount of civil construction and concrete by 90%. Meanwhile, the processing of heat preservation pipelines and the excavation of trenches on site are stopped in parallel, and the construction period can be shortened by more than 50% with only on-site joints.
聚氨酯發(fā)泡保溫管道具有容重輕、強(qiáng)度高、絕熱、隔音、阻燃、耐寒、防腐、不吸水、施工煩瑣快捷等優(yōu)良特性,已成為石油、化工、電力、建筑、運(yùn)輸、冷藏等工業(yè)部門絕熱保溫、防水堵漏、密封等不可短少的產(chǎn)品.
Polyurethane foamed insulation pipeline has many excellent characteristics, such as light bulk density, high strength, heat insulation, sound insulation, flame retardant, cold resistance, anticorrosion, non-water absorption, cumbersome and fast construction. It has become an indispensable product for thermal insulation, waterproof, leak plugging and sealing in petroleum, chemical, electric power, construction, transportation, refrigeration and other industrial sectors.
Above is the information about the black jacket straight seam steel pipe introduced by today's edition. You can pay attention to our website in time: http://www.15jt.cn for more details and consultation. We will have more wonderful content for you.
