Auxiliary device for welding repair of large pipeline

Abstract

The invention discloses an auxiliary device for welding repair of a large pipeline, which comprises a counterweight plate. Electric telescopic rods are respectively fixed at four corners of the edge of the counterweight plate; universal wheels are fixedly installed at the bottom ends of the output ends of the electric telescopic rods; a motor is fixedly installed on one side of the top face of thecounterweight plate; a speed reducer is arranged at the side end of the motor and fixedly installed on the top face of the counterweight plate; an input shaft of the speed reducer is fixedly connected with an output shaft of the motor through a coupler; and a supporting plate is fixed to the other side of the top face of the counterweight plate. According to the device, the electric telescopic rods, the motor, a first motor and a hydraulic cylinder are arranged, the above machine can be remotely controlled to press the arc-shaped steel plate to the damaged part of the pipeline, manual pressing is not needed, the labor amount of workers is saved, meanwhile, the situation that a conveying medium leaks and splashes to the bodies of the workers is effectively prevented, the personal safety ofthe workers is guaranteed, through the arrangement of a hot-air blower, leaked feed liquid at the welding position can be quickly dried in a blowing mode, and then the working efficiency is improved.

Description

technical field [0001] The invention relates to the field of pipeline repair, in particular to an auxiliary device for welding and repairing large pipelines. Background technique [0002] At present, pipelines are usually used to realize long-distance liquid and gas transportation, which are widely used in surface or underground engineering, shipbuilding or offshore oil platforms, water, gas or natural gas supply, electric power, industrial production, sewage treatment and maintenance, etc., such as crude oil pipelines , water supply / drainage lines, etc. During the use of the pipeline, due to factors such as itself or external factors, leakage or damage may occur, and emergency repairs are required. The emergency repair process is completed when the medium inside the pipeline is normally transported. In the prior art, pipeline repairers or welding patches are often used to repair the damaged parts of the pipeline. The long-term use of the pipeline repairer will inevitably r...

AI Technical Summary

Problems solved by technology

In the prior art, pipeline repairers or welding patches are often used to repair the damaged parts of the pipeline. The long-term use of the pipeline repairer will inevitably reduce the sealing reliability until it fails completely, resulting in secondary leakage of the repair pipeline. Therefore, most of them use welding. Patch technology is used to repair the damaged part of the pipeline. However, when this technology is implemented, due to the pressure of the conveying medium in the pipeline, it is difficult to manually press the patch steel plate on the damaged part of the pipeline, and sometimes the conveying medium in the pipeline can cause danger to people, so It cannot be directly contacted, so there is an urgent need for an auxiliary device for welding and repairing of large-scale pipelines to achieve the above-mentioned problems

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