鋼套管(鋼套鋼)埋設技術(shù)是一種防水、防漏、抗?jié)B、抗壓和全封鎖的埋設新技術(shù)，是直埋敷設技術(shù)在公開水位較高地域運用的一次較大打破。它是由保送介質(zhì)的鋼管、防腐外套鋼管以及鋼管與外套鋼管之間填充的超細玻璃棉組合而成,也可采用石墨、硅鈣瓦管殼及填充聚氨酯泡沫復合而成。
Steel sleeve (steel sleeve) embedding technology is a new embedding technology of waterproof, leak-proof, impermeability, compression and full blockade. It is a great break in the application of direct embedding technology in areas with high open water level. It is made up of super fine glass wool which is filled with steel pipes, anticorrosive steel tubes and steel pipes filled with steel pipes and outer steel pipes. It can also be made of graphite, calcium silicate tiles and polyurethane foam.
一種是由保送介質(zhì)的鋼管、防腐外套鋼管以及鋼管與外套鋼管之間填充的超細玻璃棉組合而成,也可采用石墨、硅鈣瓦管殼及填充聚氨酯泡沫復合而成。鋼套管(鋼套鋼)埋設技術(shù)是一種防水、防漏、抗?jié)B、抗壓和全封鎖的埋設新技術(shù)，是直埋敷設技術(shù)在公開水位較高地域運用的一次較大打破。直埋管道的維護管的首要問題是緊密防水的牢靠性，此外要有良好的機械強度，鋼套管由于強度高采用焊接銜接，防水的密封性能牢靠性非常高，另外，其耐高溫性能也是其它外維護管所不能比較的。在公開水位高的地域，為保證公開水不影響蒸汽直埋管道的正常運轉(zhuǎn)，外維護層采用鞏固、密閉的鋼管外殼。
One is made from the super fine glass wool which is filled with the steel pipe, the anticorrosive coat pipe and the filled steel tube between the steel pipe and the outer steel pipe. It can also be made of graphite, calcium silicate tile shell and polyurethane foam. Steel sleeve (steel sleeve) embedding technology is a new embedding technology of waterproof, leak-proof, impermeability, compression and full blockade. It is a great break in the application of direct embedding technology in areas with high open water level. The primary problem for the maintenance pipe of directly buried pipeline is the reliability of tight waterproof. Besides, it should have good mechanical strength. Because of the high strength of steel sleeve, welding connection is adopted, the reliability of waterproof sealing performance is very high. In addition, its high temperature resistance performance can not be compared with other external maintenance pipes. In the area with high open water level, in order to ensure that the open water does not affect the normal operation of the directly buried steam pipeline, the external maintenance layer adopts a consolidated and sealed steel tube shell.
預制聚氨酯直埋保溫管主要由四局部組成。
The prefabricated polyurethane direct-buried insulation pipe is mainly composed of four parts.
1工作鋼管：依據(jù)保送介質(zhì)的技術(shù)請求分別采用有縫鋼管、無縫鋼管、雙面埋弧螺旋焊接鋼管。
1. Working steel pipe: According to the technical requirements of delivery medium, seamless steel pipe, double-sided submerged arc spiral welded steel pipe are used respectively.
2保溫層：采用硬質(zhì)聚氨酯泡沫塑料。
2. Insulation layer: rigid polyurethane foam.
3維護殼：采用高密度聚乙烯或玻璃鋼。
Maintenance Shell: High Density Polyethylene or Glass Fiber Reinforced Plastic.
4滲漏報警線：制造預制聚氨酯直埋保溫管時，在靠近鋼管的保溫層中，埋設有報警線，一旦管道某處發(fā)作滲漏，經(jīng)過警報線的傳導，便可在專用檢測儀表上報警并顯現(xiàn)出漏水的精確位置和滲漏水平的大小，以便通知檢修人員疾速處置漏水的管段，保證熱網(wǎng)平安運轉(zhuǎn)。
4. Leakage alarm line: When manufacturing prefabricated polyurethane direct-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 exact position and level of leakage, so as to inform the inspectors to quickly dispose of the leakage pipe section and ensure the safe operation of the heat network. 。
It is believed that after reading the introduction of http://www.qndr49.cn, the polyurethane insulation steel pipe manufacturer in this paper, they will have their own understanding of this aspect, and other problems can be solved well in the future.
