For a long time, offshore oil and gas platforms, deep-water jackets and other large-scale marine equipment have complex structures, limited welding space, and difficulty in precision control. Traditional manual welding not only has high working strength and high risk, but also its efficiency and stability are difficult to adapt to the high standard requirements of deep-sea engineering. High-end intelligent welding equipment has also long relied on imports. 

Full chain domestic self-developed

The intelligent welding robot system put into use was independently developed by Offshore Oil Engineering Co., Ltd. After the overall integration was completed in August last year, it entered a 10-month on-site commissioning and engineering verification stage. All performance indicators met the standards and successfully achieved large-scale industrial applications. 

The equipment is specially designed for high-difficult customized welding scenarios such as offshore oil and gas platform module nodes and deep-water jacket reinforcement rings. The design life is 20 years, and the maximum bearing capacity can reach 30 tons. The core software and process libraries are 100 % localized and completely get rid of external technology dependence.

Conquering industry challenges 

In the research and development process, the project team has broken through a number of industry neck-stuck technologies, successfully solved key problems such as variable cross-section welding groove identification, complex welding path planning, and adaptive adjustment of intelligent process parameters. More than ten technological innovations such as AI visual identification of landing welds, three-dimensional laser intelligent matching, multi-layer and multi-channel intelligent channeling welding. The robot supports one-button start-up automatic operation, and can independently complete intelligent correction of welding trajectory, intelligent back cover and other operations, accurately adapt to complex space welding scenarios, and solve the pain points of poor accessibility and unstable accuracy of traditional welding. Keywords : marine equipment, intelligent welding robot, marine energy

Efficiency jumped sharply 

In order to ensure that the equipment adapts to various field conditions, the R & D team has completed nearly 1,000 sets of welding experiments, and built more than 500 exclusive process databases including electrical parameters, swing parameters, and channeling logic, which greatly improves the continuous operation stability of the equipment. At present, the equipment can weld steel with a maximum thickness of 70 mm, and the qualified rate of one-time welding is more than 98 %. Compared with the traditional welding mode, the comprehensive operation efficiency is improved by more than 40 %, and the risk of manual high-risk operation is effectively reduced, which provides strong equipment support for the intelligent and efficient construction of offshore oil and gas projects.Editor / Li Xiaohua