Study On Surface Heating And Temperature Field Of Wet-polluted Insulator

So far,the temperature field of uneven heating on the surface of solid parts has not been studied in depth.For example,surface heat generation and temperature field distribution of wet-polluted insulator during operation are urgently needed topics for research.Since infrared thermal imaging technology is an important way to detect the contamination levels of insulator surface,the application of infrared detection technology requires complete theoretical knowledge of insulator heating,so it is of great significance to study the temperature field of insulators.Motor parts,bearings and housings in the machinery industry are also very prone to heat,and there are many causes of the heat generation.The study of the heat generation of the insulators also lays a solid foundation for the heating of mechanical equipment.In this paper,the heat balance equation of the insulator is established and calculated.The ANSYS Workbench finite element analysis software is used to simulate the temperature field under different contamination levels of the insulator by the method of electrothermal coupling analysis,and analyzing the change in temperature field when the insulator produces dry zones.At the same time,the temperature distribution in the theoretical analysis is compared with the experiment to verify the validity of the results.The stress of the insulator under the influence of wind is analyzed.At the same time,the static-structural analysis and the electrothermal coupling analysis in ANSYS Workbench are combined with the theoretical calculation of the surface temperature of the insulator to obtain the theoretical and simulation results of the insulator under the influence of wind.At the same time,according to the contamination and deformation of the insulator,Six Sigma optimal design of the ANSYS Workbench is used to optimize the structure of the insulator in order to verify the pass rate of the insulator during the use of the insulator.The final results of the project:(1)The heat balance equation of the insulator in the spherical coordinate system is established;(2)The mathematical relationship between the surface temperature of the insulator and the radius of gyration of the insulator is analyzed,and the relationship is established.(3)The temperature distribution cloud diagram of the insulator under different contamination levels is obtained.The relationship between the radius of gyration of the insulator and its surface temperature is analyzed.It is concluded that the surface temperature of the insulator increases first and then decreases with the increase of the radius of gyration.(4)The influence of the degree of contamination,width,position and quantity of the drying zones on the temperature field of the insulator was verified by simulation.(5)It is concluded that as the wind increases,the displacement deformation of the insulator also increases.(6)It is concluded that the greater the surface contamination,the higher the surface temperature of the insulator;the higher the wind,the lower the surface temperature of the insulator.The higher the level of contamination,the greater the temperature drop of the insulator under the influence of the wind.(7)The insulator is optimized by the Six Sigma optimized design method.The lower part of the insulator safety factor is mainly concentrated on the fixedly installed steel foot and iron cap respectively connected to the porcelain parts.Insulators below the safety factor of 5 account for 85% of the number of samples.