A remote visual all-position automatic argon arc welding device for pipelines

Abstract

The invention discloses a remote visual all-position automatic argon arc welding device for pipelines, which comprises a welding head and a welding guide rail. The welding guide rail comprises an annular guide rail support plate, and the outer wall of the annular guide guide support plate is provided with a guide rail fixed gear in the circumferential direction. ; The welding head includes a rotary drive module, the rotary drive module is connected with the machine head connecting plate, the outer side of the rotary drive module is rotated and provided with a wire feeding module II, the outer side of the machine head connecting plate is rotated and provided with a wire feeding module I, and the machine head connecting plate A yaw drive module is installed on the upper part of the yaw drive module, and a yaw drive auxiliary guide rail is connected to the top of the rotation drive module. AVC swing module is installed in the yaw drive auxiliary guide rail, and the AVC swing module is connected to the yaw drive module through the yaw drive connecting plate. , AVC swing module is connected with torch module. The welding head of the device is small in size, can be applied to a narrow space, and can be automatically surfacing at a long distance.

Description

technical field [0001] The invention relates to the technical field of surfacing welding maintenance of nuclear power pipelines, in particular to a long-distance visual pipeline all-position automatic argon arc welding device. Background technique [0002] The voltage stabilizer is one of the five main equipments of the nuclear power plant. The weld seam at the safety end of the voltage regulator is the pressure boundary of the primary circuit connecting the voltage regulator and the takeover. Inconel-600 material was widely used in dissimilar metal welds of safety terminal tubes of early nuclear power plant regulators. In the use of Inconel-600 nickel-based alloy in nuclear power plants at home and abroad, it is found that the alloy material has a high sensitivity to SCC in the primary circuit of high-purity water; at the same time, a large number of foreign nuclear power plant maintenance cases show that Inconel-600 dissimilar metal welding during the life of the nuclear ...

AI Technical Summary

Problems solved by technology

Complex pipelines are generally composed of low-alloy steel, nickel-based alloy pre-stacked edges, nickel-based alloy welds, stainless steel, stainless steel welds, etc., which are difficult to weld; at the same time, the equipment systems in the nuclear island are highly integrated. In the operation and maintenance stage, the safety terminal pipe of the voltage stabilizer and the surfacing repair of the weld have: (1) the operating space is narrow and the visibility is poor; (2) the surfacing layer is large in size, the number of welding layers / passes is large, and the welding maintenance workload (3) It is difficult to control the dose of personnel in a radioactive environment, and the requirements for equipment quality are high; (4) The dimensional accuracy of the surfacing layer structure is high, and the control accuracy of welding equipment is required to be high.

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