Low Frequency Of Cylinder Induction Type Liquid Metal Electromagnetic Pump Research

With the development of the MHD, electromagnetic metallurgy has become one ofthe key of modern materials processing. According to the different effect ofelectromagnetic field in the process of material handling characteristics, it mainly dividesinto: shape control, fluid drive, heat flow and produced, etc. Electromagnetic pump is theuse of Lorentz force driving device, liquid metal in the treatment of the material in theprocess of radial electromagnetic force to push molten metal. With the method ofnon-contact drive metal liquid, it can effectively avoid the external gas into the cause ofmetal oxide, improving the quality of material surface and the internal organizationperformance. At present, in the field of metallurgy continuous casting process, the moredriven was by conduction type electromagnetic pump for liquid quantitative pouring.Compared to conduction type electromagnetic pump, the induction cylinderelectromagnetic pump could offer high flow and lift, etc. Induction cylindricalelectromagnetic pump, confined to its huge volume, was only used for large nuclear powertransmission equipment, which is underdeveloped in the industrial production.Calculation based on the electromagnetic drive theory, this paper through the finiteelement analysis software ANSYS to induction columns for the analysis ofelectromagnetic pump. Electromagnetic pump is mainly provided by the primary corewinding traveling wave magnetic field, by the metal liquid inside the pump ditch assecondary transmission along the radial direction. Articles respectively the number ofmagnetic poles in the electromagnetic pump, the primary iron core and winding current,power frequency and other relevant structural parameters of simulated calculation, toexplore the various parts of the influence of electromagnetic pump efficiency. On the basisof the analysis and calculation to make the corresponding electromagnetic pump prototyperelated experiments, which tests and verifies the accuracy of the simulation calculation,provide a reference basis for the prototype of the improvement. Through calculation and analysis of the structure of the electromagnetic pump partsfound that the magnetic poles of logarithmic are even electromagnetic pump can providehigher magnetic induction intensity. Around the pump ditch the outside of the primary corearrangement more closely, the higher the utilization rate of the magnetic field strength onwinding. Moreover, center core thickness on primary core yoke thickness is advisable.Reference parts structure on the influence of electromagnetic pump efficiency, whendesigning electromagnetic pump according to the volume of electromagnetic pumprequired size determine the bearing capacity of the winding, differential pressure and flowrate for the electromagnetic pump transfers relevant parameters, such as rational designscheme is put forward.In the internal structure and external load, etc, on the basis of the calculation andanalysis, this paper successfully create a head of310mm,250mm diameter of the cylinderinduction electromagnetic pump, the pump rated line voltage120v,30a line current, canprovide0.5a tm and17L/min flow. Through simulation of liquid metal tin, transportwithin the pump to observe the simulation of a sinusoidal electromagnetic pump cycleliquid tin in the change of the magnetic induction intensity, the induced current andelectromagnetic force. The electromagnetic pump transmission head and its correspondingmodel calculation result is of high consistency. Experiments show that the finite elementanalysis technology to design for electromagnetic pump provides effective guidance.