The Research Of Blast Furnace Equipment Maintenance Technology Based On The Mechanical And Electrical Hydraulic Integration

Tuyere replacement project in the set as it involves more construction workers,construction time is longer,and can only be replaced under Hugh wind blast shutdown state,it has been a blast regular maintenance master project,set to replace the Efficiency It will directly affect the entire blast furnace maintenance shutdown time.Since the sleeve is installed between the outlet and the big sets,combined with tight joint surface between devices,especially between the sleeve and a large set of high-temperature environment due to the long lead in sets of thermal expansion,very difficult to dismantle.Before dismantling the sets need to stop the cooling water,due to the high temperature blast furnace will make the thermal expansion sleeve further disassembly further increase the difficulty.The current major use of artificial dismantle dismantled,people need to use the 20-30 Yau repeatedly hammer blow,because the narrow space around the furnace,and its vicinity are likely to have more than one project at the same time to start the job,while leisurely hammer blow process itself there are also many risk factors,the construction site is extremely easy to cause accidents.Further,since the furnace larger temperature difference between inside and outside,after removal of the cold air poured into the small set of furnace,instant hot and cold alternately will make iron furnace slag splashing out,given the small space around the furnace and intensive workers,injury prone groups accident.Device according to blast large,medium size trolley set size determination,according to the sleeve and large sleeve,air force determining the adhesion between the hydraulic cylinders,hydraulic pumps models and supporting systems,the device uses two 75 t hydraulic jacks as to provide the main drawing force components simultaneously to provide maximum 150 t static reverse drawing;determining dolly size according to the site location.Dolly so that the lever center is consistent with the sleeve center,lock the car after the blast furnace body.Hydraulic drive system so that the lever extends into the sleeve(in this case the lever is in the retracted state),until the rod hook head out in the end face of distraction rod set so that the lever hook sets hooked in the end face.Hydraulic Actuation lever pull back while making car bracket with the large flange surface snapping,gradually increasing pressure hydraulic device,after a certain tension in the sleeve and can be made to produce large set loose,that is the set of "Marathon." After the set,"Marathon",using chain hoists or electric hoists the blast comes in sets of hanging out.Application of a significant reduction in staff cover a large blast furnace demolition project investment,security workers are guaranteed essence,improve labor efficiency and eliminate the hammer leisurely consumption,extend the life of large sets and other devices.