Research On Energy Saving And Silenced Integrated Mobile Welding Workshop

The high speed development of pipeline construction leads to the rapiddevelopment of pipeline construction equipment. In the pipeline transportation, thewelding quality of pipes is directly related to the pipeline efficiency and safety, so it isa important segment of the pipeline construction.At present flux-cored wire semi-automatic welding has advantages of highwelding qualified rate and production efficiency, so it has been the most commonwelding method used in the construction of long distance pipeline and widely appliedin the construction of big, medium-sized diameter transport pipelines in China.As indispensable engineering machinery in the assembly line of semi-automaticwelding of pipelines, mobile welding workshops are valued by researchers to furtherimprove the welding efficiency, energy conservation and emission reductions and tomeet more strict environmental protection laws and regulations in China and abroad,which has become one problem to be solved in the field.This paper introduces the development of a new type energy-saving and quietmobile welding workshop. After analysing the advantages and disadvantages of theexisting mobile welding workshops, combining with the actual needs of oil and gaspipe welding construction, new technology and new material are made full use of tomake new mobile welding workshop to have characteristics of energy saving, lownoise and convenient for transportation.Firstly, travelling system, accessory lifting system, power generation weldingsystems are studied and analyzed, and the high efficient power transmission methodof the engine, power generation and welding all-in-one machine, accessory crane, andtravelling system is determined, which realizes the modular design of mobile weldingworkshop and improves the reliability of the equipment operation with the results ofenergy saving and noise reduction.Secondly, the structure of the mobile welding workshop is optimized. The widthis reduced and the multibody system dynamics simulation software RecurDyn(Recursive Dynamic) is used to do the numerical simulation analysis of the mobilewelding workshop’s stability in the different operating modes. The structural design ofthe mobile welding workshop is confirmed. Thirdly, combining with the welding engineering facts, experiments of weldingtechnique are carried out by using the power generation and welding all-in-onemachine. According to the problems found in the tests, the power generation andwelding all-in-one machine is reformed to satisfy the requirements of multistage pipewelding.Finally, the energy saving and silenced effects, stability and reliability of thedeveloped energy saving and silenced integrated mobile welding workshop areverified through industrial experiment evaluation. Results of the experiments showthat the energy saving and silenced integrated mobile welding workshop can meet thedesign requirements. Energy consumption is reduced by40%, and the noise at work isbelow70dB. The stability is still good when it climbing with the largest crane heavy.