Seam Distinguishing System & Automatic Control Of Two-join-one Welding Equipment For Movable Steel Tube

All pipeline projects carry out one after another along with the uninterrupted development of national source, automatic installation of "two-joint-one" is of great immediate significance. This article puts forward the design of "two-joint-one" welding installation of mobile steel, welding seam discernment system and automatic control system accordance with principles of welding seam discernment system and automatic control system, the complete control is finished by executive body as the feasible plan of pipeline construction application.The article considers the effects of many realistic situations (out of shape of pipe mouths processing precision of slope mouth and connecting error) on the whole system, especially automatic control. In real working, there are deviations of shape and concentricity in any welding seam, which affect the correct location relation between welding torch and slope mouth, so welding quality is affected directly. If equipments can be adjusted automatically according to the welding shape of seam and change of welding process, welding equipments should have the function of welding seam discernment and automatic control.In future, the elaboration of principles of welding seam discernment system and automatic control system in the article is a great help to relative realistic application.