Optimal Design Of Electromagnetic Induction Heater For Pipeline

Currently induction heating technology is one of the most commonly used heating technologies. Due to the heating speed, easy to control, non-pollution, easy to implement automated production and a series of advantages, it has been developing rapidly in the field of heating. At the same time, there are also some drawbacks in traditional electromagnetic induction heater, such as the limitations of shapes and sizes of heaters, the low overall heating efficiency.This article firstly analyses and calculates magnetic field distribution of external space of permanent magnet, there are two main ways that magnetic scalar and vector magnetic method for the numerical simulation calculation and analysis. Using the Maxwell equations obtaines permanent magnets basic equations. Triangular elements are used to establish a mathematical model of the magnetic field, the magnetic field strength of the permanent magnet elementary symmetric field has been calculated by using the magnetic vector potential finite element method of the electromagnetic.The finite element analysis software has been used to simulate the traditional cylindrical billet induction heater heating process, and giving the distribution of vortex power, as well as the variation with frequency. Through comprehensive analysis of the efficiency in the use of traditional induction heaters, this paper obtains some drawbacks in induction heaters. According to the induction heating principle, proposes an optimal design that a revolving permanent magnet instead of an excitation coil, which effectively improve the heating efficiency.This paper also offers a mathematical model for coupling field induction heating problem and a method A-φ for the eddy current field calculation, and an accurate analysis of the boundary conditions. Using electromagnetic field finite element analysis software Ansoft, Ansys Workbench simulates on X65steel tube heating instance, giving the magnetic field distribution, eddy current distribution, heat distribution and the temperature distribution of the billet surface, and making a detailed analysis of the simulation results, which provide a basis for the optimization of induction heaters.