阅读说明：本技术 一种适用于60毫米直径输油管道的环氧粉末涂料内补口装置 (Epoxy powder coating inner joint coating device suitable for oil pipeline with diameter of 60 mm ) 是由 何林 赵凯华 于 2019-01-17 设计创作，主要内容包括：一种适用于60毫米直径输油管道的环氧粉末涂料内补口装置,包括有粉末喷枪和控制单元,粉末喷枪具体由扩粉嘴、枪套、枪头、轮支撑体、高压静电发生器、轮子、枪体、摄像头、转接体、链接柱构成,控制单元包括环氧粉末储存流化腔、空气压缩机和操控装置,将粉末喷枪伸入60毫米管道,开启摄像头,操控装置上显示管内画面,当摄像头看到焊缝,粉末喷枪返回一定距离,使得扩粉嘴对准焊缝位置,此刻开启空气压缩机,同时将粉末喷枪往复拉动,环氧粉末涂料从扩粉嘴和枪套之间喷出,均匀吸附在管道内壁,由于管道焊缝位置已加热至230℃,环氧粉末瞬间流平固化。(An epoxy powder coating internal repaired mouth device suitable for an oil pipeline with the diameter of 60 mm comprises a powder spray gun and a control unit, wherein the powder spray gun is composed of a powder expanding nozzle, a gun sleeve, a gun head, a wheel supporting body, a high-voltage electrostatic generator, a wheel, a gun body, a camera, a switching body and a linking column, the control unit comprises an epoxy powder storage fluidization cavity, an air compressor and an operation and control device, the powder spray gun is stretched into the pipeline with the diameter of 60 mm, the camera is started, an image in the pipeline is displayed on the operation and control device, when the camera sees the welding seam, the powder spray gun returns to a certain distance, so that the powder expansion nozzle is aligned to the welding seam, the air compressor is started at the moment, and meanwhile, the powder spray gun is pulled to and fro, the epoxy powder coating is sprayed out from the powder expansion nozzle and the gun sleeve and is uniformly adsorbed on the inner wall of the pipeline, and the epoxy powder is instantly leveled and cured because the welding seam position of the pipeline is heated to 230 ℃.)

技术领域

本发明属于输油管线内防腐技术领域，具体涉及一种适用于60毫米直径输油管道的环氧粉末涂料内补口装置，用于对外径为60毫米钢管焊缝进行内防腐。

背景技术

国内大部分油田的单井输油管道采用直径60毫米的无缝钢管，单根钢管的内外防腐在防腐厂已经技术成熟，由于60毫米钢管内部尺寸很小，针对焊缝的内防腐补口一直未开发出可靠技术，使得单根防腐预制钢管不能得到大面积推广。但是，恰恰是60毫米管道的腐蚀穿孔，造成漏油事故频发，影响了油田的正常生产。