Automatic pressure steel pipe welding line leveling welding device and method

Abstract

The invention discloses an automatic pressure steel pipe welding line leveling welding device and method. The automatic pressure steel pipe welding line leveling welding device comprises a telescopic frame and a sliding mechanism. Each of the two ends of the sliding mechanism is detachably connected with the telescopic frame through a connecting plate. The sliding mechanism is provided with a welding machine and two pipe pressing mechanisms which are arranged on the two sides of the welding machine correspondingly. The telescopic frame comprises a top frame, a bottom frame and a plurality of first oil cylinders. The top frame is connected with the bottom frame through the multiple first oil cylinders. The top face of the top frame and the bottom face of the bottom frame are arc faces, and the two connecting plates are connected to the two sides of the top frame correspondingly. Welding is conducted after the two side pipe walls of a pressure steel pipe joint are leveled, and it is ensured that the two side pipe walls of a welded pressure steel pipe joint are located on the same arc line.

Description

technical field [0001] The invention relates to a pressure steel pipe welding seam automatic leveling welding device and a welding method. Background technique [0002] At present, the water diversion system of domestic hydropower stations, especially pumped storage power stations, mostly adopts the form of steel lining, that is, penstocks. The welding quality of penstocks is the key control point for the quality of penstock manufacturing and installation. A piece of steel plate is bent into a round pipe, and then the joints at both ends of the round pipe are connected by flat welding, and some pressure steel pipes will be deformed due to bending errors or handling and other factors, and its shape is as follows Figure 9 and 10 As shown, the pipe walls on both sides of the joint are not on the same arc line. After welding the seam of this type of pressure steel pipe, the shape of the nozzle will be irregular first, so that the two joints of the pressure steel pipe will be bu...

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Problems solved by technology

[0002] At present, the water diversion system of domestic hydropower stations, especially pumped storage power stations, mostly adopts the form of steel lining, that is, penstocks. The welding quality of penstocks is the key control point for the quality of penstock manufacturing and installation. A piece of steel plate is bent into a round pipe, and then the joints at both ends of the round pipe are connected by flat welding, and some pressure steel pipes will be deformed due to bending errors or handling and other factors, and its shape is as follows Figure 9 and 10 As shown, the pipe walls on both sides of the joint are not on the same...

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