Based On The Response Surface Method Water-cooled Oil-immersed Electromagnetic Eddy Current Brake Structure Optimization Design

Water immersion type eddy current brake is a kind of auxiliary braking device installed on the oil rig,it has no mechanical friction in operation,convenient control,smooth braking,maintenance workload small,when there are still large brake torque at a low speed.Complex,because of the bad field working environment,working condition and braking body itself is easy to produce large amounts of heat,easy to damage to internal parts in the process of long-term work accidents.So for water-cooled oil-immersed electromagnetic eddy current brake shaft,rotor and internal pipes are especially necessary analysis and research,and is of great significance.In this article,through the following several aspects to analyze water immersion type eddy current brake research:1.Firstly,the development status and development trend of electromagnetic eddy current brakes at home and abroad are expounded.Taking the water-cooled oil-immersed electromagnetic eddy current brake as the research object,the technical parameters and main structure of the brake body are introduced.The working conditions of the brake device are introduced,and the thermal effect of the pipeline is analyzed.2.Secondly,the dynamic analysis of the shaft and the rotor.The ADAMS and ANSYS software were used to simulate the rigid-flexible coupling dynamics and stress analysis of the water-cooled oil-immersed electromagnetic eddy current brake,and the fatigue damage area was obtained.The flow field analysis of the circulating water cooling pipe and the excitation coil sealing cover pipe was carried out by using Fluent software.The real boundary conditions are used to simulate the dynamics of the model,and the velocity field,pressure field and temperature field are obtained.3.Parametric modeling of each structure based on the response surface method,determination of optimization variables,parameter correlation analysis and response surface analysis.According to the parameter correlation and response surface analysis results,the parameters are optimized for each structure.After the final parameter optimization,the volume of the shaft is reduced by 4.65%,the maximum force in the x direction is reduced by 9.87%,the maximum force in the y direction is reduced by 8.46%,and the volume of the rotor is reduced by 5.54% after optimization.The maximum force in the x direction is reduced by 34.9%,and themaximum force in the y direction is reduced by 16.5%.The optimized circulating water cooling duct is reduced by 0.02m/s and the pressure difference is increased by4610 Pa.The temperature difference between the inlet and outlet increased by 8.9?;the optimized speed difference of the excitation coil sealing cover pipe was reduced by 0.05 m/s,the pressure difference increased by 5840 Pa,and the inlet and outlet temperature difference increased by 9.2?.Through the research of this subject,it is of great significance to improve the reliability of the water-cooled oil-immersed electromagnetic eddy current brake machine.