Steel pressure pipe longitudinal seam welding and welding seam flaw detection operation device and application method thereof

Abstract

The invention discloses a steel pressure pipe longitudinal seam welding and welding seam flaw detection operation device, which comprises at least one operation device. The operation device comprisesa suspension support mechanism, an external operation platform and an internal operation platform. An application method utilizing the operation device for carrying out longitudinal seam welding comprises the following steps of (1) assembling the operation device; and (2) welding a steel pressure pipe longitudinal seam until accomplishing the welding of all longitudinal seams. An application method utilizing the operation device for carrying out welding seam flaw detection comprises the following steps of (1) assembling the operation device; and (2) detecting welding seam flaws until accomplishing the flaw detection of all welding seams. The steel pressure pipe longitudinal seam welding and welding seam flaw detection operation device provided by the invention is simple in structure, and can be applied to longitudinal seam welding and welding seam flaw detection of steel pressure pipes with different diameters, different wall thicknesses and different heights, so that the production efficiency of the steel pressure pipes is improved, the quality of the steel pressure pipes is ensured, the labor intensity and the production cost are reduced, and the practicability is high.

Description

technical field [0001] The invention belongs to the technical field of steel pipe longitudinal seam welding and weld seam flaw detection inspection devices, and in particular relates to a pressure steel pipe longitudinal seam welding and weld seam flaw detection inspection operating device and a use method thereof. Background technique [0002] The penstock is made of one steel plate, two steel plates and four steel plates rolled and assembled. The penstock steel rolled and assembled by one steel plate forms a longitudinal seam, and the pressure steel pipe rolled and assembled by two steel plates forms two longitudinal seams. , the pressure steel pipe rolled and assembled by four steel plates forms four longitudinal seams, and the longitudinal seams are welded to form welds. According to the seam evaluation standard, the weld seam formed by the longitudinal seam welding in the ex-factory penstock has certain specification requirements. If the longitudinal seam welding is unq...

AI Technical Summary

Problems solved by technology

However, when the existing penstocks are undergoing quality inspections such as longitudinal seam welding and post-weld flaw detection, it is necessary to build a construction operation platform that meets the welding and flaw detection inspection, or use construction scaffolding to perform welding and flaw detection inspection operations, or to install on the inside and outside of the penstock. A ladder is built on the wall, and the current on-site welding and flaw detection inspection operation platform has certain deficiencies: First, the simple welding and flaw detection inspection operation platform erected is not standardized, and the strength of the welding and flaw detection inspection operation platform does not meet the requirements, which is likely to cause safety hazards. Hidden dangers; second, the operation platform built on site needs to be built on both sides of the penstock, which not only occupies the construction site, but is inconvenient to move; and the utilization rate of the on-site assembly line is low, and at the same time affects the safe and civilized construction on site; third, due to the existence of steel pipe diameter Differences, different wall thicknesses of steel pipes, the on-site operation platform is not universal, requires repeated disassembly and assembly, the labor intensity of workers is high, and the efficiency of welding and flaw detection is low

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