在石油和化工生产中,蒸汽夹套管是保温管道的类型之一。夹套管伴热突出的优势是伴热效率高、伴热均匀、温度调节迅速、适用范围广,因而在生产中得到了广泛运用。夹套管的配管设计,要注意套管的长度适当、保障内外管的热膨胀应力一致、管内伴热介质的流动通畅,以及内外管的材料选择。 Steam and oil jacketed pipes are one of the types of insulation pipes used in petroleum and chemical production. Outstanding advantages of jacket heat tracing are the advantages of high heat tracing efficiency, uniform heat tracing, rapid temperature regulation and wide range of application. Therefore, it has been widely used in production. Clamp pipe design, pay attention to the appropriate length of the casing to protect the thermal expansion of the inner and outer pipe stress consistent with the smooth flow of heat pipe inside the material, as well as internal and external tube material selection.