Pipeline all-position laser and arc combined welding system

Abstract

The invention provides a pipeline all-position laser and arc combined welding system. The pipeline all-position laser and arc combined welding system comprises a laser sensor, an image processing computer, a controller, an actuator and a guard plate. The laser sensor is used for collecting first position image information and second position image information of a welding seam; the image processing computer is used for calculating the transverse deviation and the longitudinal deviation of the welding seam according to the first position image information and the second position image information; the transverse deviation is transformed into a transverse deviation voltage, the longitudinal deviation is transformed into a longitudinal deviation voltage, and after delay calculation is conducted according to the preact delay quantity, the transverse deviation voltage and the longitudinal deviation voltage are sent to the controller; the controller is used for correcting the transverse deviation according to the transverse deviation voltage and correcting the longitudinal deviation according to the longitudinal deviation voltage; the actuator is used for controlling a combined welding torch and the welding seam to be maintained in an accurate centering state according to the corrected transverse deviation and the corrected longitudinal deviation, and then welding is conducted; the guard plate is used for preventing welding spatter from polluting a focusing lens of the laser welding torch to protect a lens, the pressure intensity of a laser welding torch protection gas curtain is lowered, and the welding quality is ensured.

Description

technical field [0001] The invention belongs to the technical field of oil and gas pipeline welding, in particular to a pipeline all-position laser arc hybrid welding system. Background technique [0002] In the laser / arc hybrid welding of large-diameter oil and gas pipelines, during the welding process, the spattered welding slag will cause serious spatter pollution to the focusing lens protection lens of the laser welding torch, which will seriously reduce the quality of the laser beam, thereby affecting the welding quality. [0003] In the prior art, the spattered welding slag is blown away by designing a horizontal high-pressure gas curtain in front of the laser focusing lens to protect the lens, but this method is only applicable to pure laser welding torches. In the laser / arc hybrid welding system, the air curtain pressure above 4MPa can effectively blow away the spatter of welding slag. At this time, the high-pressure air flow will disturb the protective air flow of a...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a pipeline all-position laser arc hybrid welding welding system, which is used to solve the problems in the prior art that the laser arc hybrid welding spatters the welding slag during the welding process and pollutes the laser welding torch. Focus protection lens, technical problems leading to poor welding quality

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