用于三层PE防腐管环形包覆作业的复合机头研制  

Development of 3PE Anticorrosion Pipe Circular Coating Compound Mould

作　　者：李生军[1] 贾宏庆[1] 何小林[2] 

机构地区：[1]天华化工机械及自动化研究设计院,甘肃兰州730060 [2]长庆油田公司建设工程处,陕西西安710086

出　　处：《石油工程建设》2011年第6期39-40,90,共2页Petroleum Engineering Construction

摘　　要：为减少机头在三层PE防腐管环形包覆生产线中的占位长度,研制了双层复合机头以代替两个单机头。双层复合机头有两个独立的进料口和两套独立的管状成型流道,内外流道同心布置,外流道的芯模兼作内流道的外模,PE层和底胶层在一个复合机头内部隔绝空气复合,复合层在真空负压作用下包覆于涂有环氧粉末的钢管。采用双层复合机头后,机头在生产线中的占位长度减少为40﹪,也使层间粘接强度增加,制造成本和运行成本降低。Instead of single mould,a double-layer compound mould is developed to reduce the length that a mould occupies in 3PE anticorrosion pipe circle coating production line.The double-layer compound mould has two independent feed ports and two independent tubular shaping channels.The inner and outer channels are placed concentrically,which allows the kernel model of the outer channel to act as the outer model of the inner channel.PE-layer and glue layer are composed isolated from air inside a compound mould,at the same time the compound layer is wrapped up on the epoxy-powder-coated steel pipe by means of underpressure action.Now the double-layer compound mould occupies 40% length of the original in production line,increases coherence strength between layers,and also reduces production and operation costs.

关 键 词：小口径钢管 三层PE防腐 双层复合机头 研制 

分 类 号：TQ330.44[化学工程—橡胶工业]