Anti-corrosion treatment system and method for butt weld joint of pipeline

• Main Authors: ADAYI XIEERYAZIDAN, JIN SHENG, TANG ZIQIN
• Format: Patent
• Language: Chinese; English
• Published: 17.12.2021
• Subjects: APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; PERFORMING OPERATIONS; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING

The invention belongs to the technical field of weld joint corrosion prevention, and particularly relates to an anti-corrosion treatment system and method for a butt weld joint of a pipeline. The anti-corrosion treatment system comprises a lining, a high-pressure gas source and a glue injection device; and the lining is located on the inner side of a joint formed by butt joint of the two pipelines, the surface of the lining is provided with a corrosion-resistant coating, one end of the lining is welded to the inner wall of one pipeline, an annular glue injection groove is formed in the outer ring face of the other end of the lining, sealing rings are arranged on the two sides of the annular glue injection groove, and a glue injection hole, a glue overflow hole and an inflation hole are formed in the position, aligned with a weld joint, of the outer ring face of the lining. The inflation hole and the glue injection hole are reserved in the weld joint, the sealing rings are expanded through high-pressure gas, t