Underwater robot friction welding system and welding method thereof

Abstract

The invention discloses an underwater robot friction welding system and a welding method thereof. The system comprises a bracket, a welding gun and a clamp, wherein the clamp comprises a clamp table and a pair of clamp arms symmetrically arranged on the clamp table; one end of each clamp arm is movably connected with the clamp table and controlled through hydraulic pressure; a para-position through hole is formed in the center of the clamp table; the front end of the welding gun is corresponding to the para-position through hole, and is perpendicularly fixed on the clamp table; a vertical lifting table controlled through hydraulic pressure is arranged on the bracket; and the clamp table is fixedly connected with the vertical lifting table of the bracket. The underwater robot friction welding system, provided by the invention, uses friction welding technology to weld welding bolts on the submarine pipeline walls, enables the mounting and the replacing process of the submarine pipeline galvanic anode to be simple, convenient and fast, is high in welding quality and small in pipeline damage, can realize accurate positioning through ROV (Remote Operated Vehicle), doesn't need underwater operation by the personnel, avoids the risk of the constructer to operate underwater, reduces the construction cost, and improves the construction efficiency.

Description

Technical field [0001] The invention relates to the technical field of subsea pipeline maintenance, in particular to an underwater robot friction welding system and a welding method thereof. Background technique [0002] In the marine industry, it is often necessary to install steel structures and lay submarine pipelines in seawater. Especially in the offshore oil industry, submarine oil pipelines and drilling rigs need to work in seawater for a long time in order to extend the submarine pipelines and steel structures. Effective anti-corrosion measures must be taken for its service life, otherwise it will be easily corroded by seawater. In order to prevent seawater corrosion, the general method is to use sacrificial anode protection. The traditional method of sacrificial anode is mainly installed by welding. When the anode needs to be installed or replaced, a lot of manpower and a long construction period are required. For underwater workers, labor intensity is high, operation r...

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an underwater robot friction welding system and its welding method, aiming to solve the problems of low efficiency of anode installation of submarine pipelines and high labor intensity of operators

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