真空技术在钢套钢直埋蒸汽管道中的应用
Application of vacuum technology in direct buried steam pipe with steel jacket
摘要：
指出了真空技术用于直埋蒸汽管道中的优势。介绍了应用真空技术的管道结构，管道焊接，分段、阀门、三通等部位的密封处理方法，管道真空度的要求及管道安装等的技术要求，并以工程实例说明真空技术在蒸汽管道中的应用可以降低管道的热损失和表面温度。
关键词：钢套钢管道,真空技术,直埋管道,蒸汽管道
Abstract：
Describes the advantages of vacuum technology. Presents the pipe structure, pipe welding, sealing method of divided section, valves, tees etc., the requirement of pipe vacuum and pipe installation. Takes a project as an example to illuminate that using vacuum technology in the steel jacket pipe can reduce the heat loss and the surface temperature of pipe.
Keywords:steel jacket pipe, vacuum technology, direct buried pipe, steam pipe