保溫管性能指標(biāo)
Insulation pipe performance index
高溫預(yù)制直埋保溫管主要由四部分組成。
The high temperature prefabricated directly buried insulation pipe is mainly composed of four parts.
1.作業(yè)鋼管：根據(jù)輸送介質(zhì)的技能要求分別選用有縫鋼管、無縫鋼管、雙面埋弧螺旋焊接鋼管。
1. Operating steel pipes: According to the technical requirements of conveying media, seamless steel pipes, double-sided submerged arc spiral welded steel pipes are selected.
2.保溫層：選用硬質(zhì)聚氨酯泡沫塑料。
2. insulation: rigid polyurethane foam.
3.維護(hù)殼：選用高密度聚乙烯或玻璃鋼。
3. maintenance shell: use high-density polyethylene or FRP.
4.滲漏報警線：制造高溫預(yù)制直埋保溫管時，在接近鋼管的保溫層中，埋設(shè)有報警線，一旦管道某處發(fā)生滲漏，經(jīng)過警報線的傳導(dǎo)，便可在專用檢測儀表上報警并顯示出漏水的精確方位和滲漏程度的巨細(xì)，以便通知檢修人員迅速處理漏水的管段，保證熱網(wǎng)運行。
4. Leakage alarm line: When manufacturing high-temperature prefabricated directly buried insulation pipe, an alarm line is embedded in the insulation layer near the steel pipe. Once leakage occurs somewhere in the pipeline and is transmitted by the alarm line, it can alarm on the special detection instrument and show the precise direction of leakage and the magnitude of leakage, so as to notify the maintenance personnel quickly. Treatment of leaking pipes ensures the safe operation of heat supply network.
保溫管由于聚氨酯硬質(zhì)泡沫保溫層嚴(yán)密地粘結(jié)在鋼管外皮，隔絕了空氣和水的進(jìn)入，能起到杰出的防腐作用。一起它的發(fā)泡孔都是閉合的，吸水性很小。高密度聚乙烯外殼、玻璃鋼外殼均具有杰出的防腐、絕緣和機(jī)械性能。因而，作業(yè)鋼管外皮很難遭到外界空氣和水的侵蝕。只需管道內(nèi)部水質(zhì)處理好，據(jù)國外材料介紹，高溫預(yù)制直埋保溫管的使用壽命可達(dá)50年以上，比傳統(tǒng)的地溝敷設(shè)、架空敷設(shè)使用壽命高3~4倍。
The 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. Its foaming hole is closed and its water absorbency is very small. The HDPE housing and FRP shell have excellent anticorrosive, insulation and mechanical properties. Therefore, the outer skin of the steel pipe is difficult to be eroded by external air and water. According to foreign materials, the service life of high-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.
5.占地少，施工快，有利環(huán)境維護(hù)。
5. less land occupation, faster construction and better environmental protection.
直埋供熱管道不需要砌筑龐大的地溝，只需將保溫管埋人地下，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%。一起，保溫管加工和現(xiàn)場挖溝平行進(jìn)行，只需現(xiàn)場接頭，能夠縮短工期約50%以上。
Directly buried heating pipelines do not need to build huge trenches. They only need to bury thermal insulation pipelines underground, which greatly reduces the construction area, reduces the amount of earthwork excavation by more than 50%, and reduces the amount of civil masonry and concrete by 90%. Together, the heat preservation pipe processing and site trenching are carried out in parallel, only the site joints are needed, which can shorten the construction period by more than 50%.
This article is organized by Shandong Hipper Pipe Technology Development Co., Ltd. http://www.qndr49.cn. We will provide you with new knowledge of Jinan insulation pipe. Interested friends can pay attention to us. Thank you!
