| The transportation of large equipment has always been one of the key difficulties in the chemical industry.This equipment is the key to support the whole project,and whether they can be delivered to the site safely and on time is directly related to whether the project can be carried out smoothly.The traditional method of reinforcement is through flat steel or steel wire rope for fastening,but this fixing method is cumbersome,has limited load-bearing capacity and cannot prevent the container from rolling over and moving during the transportation process,so it has greater limitations.Therefore,the innovative application of electronic permanent magnet technology in the field of large-scale equipment transportation has a broad research background and significance to optimize and improve the current traditional transportation mode,and even innovate the existing complex and cumbersome transportation technology.First,the magnetic force of 110 N/cm~2 is required for the design,and the influencing factors of the magnetic force are analyzed.The preliminary structural design of the electric permanent magnetic chuck is carried out.The corresponding magnetic material is selected,and the magnetic circuit of the electric permanent magnet chuck is designed through theoretical calculation,and the dimensional parameters of the internal parts are initially determined.With the requirement of complete magnetization of the reversible magnet,further calculation of the coil winding is carried out.The current required to pass into the coil winding is 17 A,and the number of turns of the coil is 105.Then,the static magnetic field and transient magnetic field simulation were carried out for the electric permanent magnetic chuck.In the analysis of static magnetic field,it mainly simulates the working state and shutdown state,and calculates the magnetic induction intensity distribution and magnetic chuck,to verify the correctness of the magnetic circuit design mentioned above.For the two groups of magnetic modules,the magnetic force per unit area can reach 146.15 N/cm~2 under working condition,which is 12.9%different from the theoretical calculation result.In the analysis of transient magnetic field,the rationality of coil winding parameters is verified first,and then the influence of magnetization history on the magnetization state in the continuous magnetization state is analyzed,and the magnetization process is analyzed more carefully.Finally,the magnetic induction intensity measurement and magnetic force measurement experiment of the electronically controlled permanent magnet are carried out.The measured magnetic force changes with the increase of current in the same trend as the simulation results,and the magnetic force can reach 170N/cm~2 under the working state,which verifies the rationality of the structural design of the electronically controlled permanent magnet chuckBased on the previous step of research,the electric permanent magnet technology is combined with the transportation technology to design the preliminary magnetic transportation saddle structure and make its model,containing 10 groups of magnetic modules.Static magnetic field simulation was performed to explore the magnetic induction intensity distribution on its surface and inside,and then a preliminary structural optimization was proposed to increase the padding layer for the problem of insufficient magnetic force of thin-walled cylindrical equipment transportation.The magnetic force is effectively improved.Theoretical calculations and calibration of the transport load are carried out to ensure that the magnetic force is sufficient and safe during the transport process.In addition,the energy consumption of electric permanent magnet technology and traditional electromagnetic technology is compared and analyzed,and the calculation results show that the electric permanent magnet technology can greatly save energy,the electric energy consumed by the magnetic transport saddle is only 1%to 2%of the energy consumed by the traditional electromagnetic chuck.Finally,the magnetic measurement experiment of the magnetic transport saddle is carried out.The experimental results show that the structure can provide sufficient magnetic force,and the electronically controlled permanent magnet technology has full feasibility in the field of transportation. |
