Multifunctional electromagnetic stirrer

Abstract

The invention discloses a multifunctional electromagnetic stirrer, comprising six layers of annular cores (1) which are horizontally arranged, six rack cores (2) which are vertically arranged and thirty-six identical solenoid coil windings (5); the six layers of annular cores are mutually independent layer by layer, are aligned vertically and are separated at intervals; the inner wall of each layer of annular core is provided with six salient poles (3); the six rack cores are uniformly distributed on the outer walls of the annular cores; each rack core is provided with five salient poles (4); the salient poles of the rack cores are inserted into the intervals, which are vertically separated, of the annular poles; the salient poles of each rack core and the salient poles of the six layers of annular cores are located on the same circumference; the top surfaces of the salient poles of each rack core are inserted into the inner walls between the salient poles of the annular cores; the thirty-six solenoid coil windings are respectively sleeved on each salient pole of the annular cores; and three-phase low-frequency alternating current is supplied by a variable-frequency power source. According to the multifunctional electromagnetic stirrer, the structure is simple, the size is small, magnetic leakage is small, and the working efficiency is high.

Description

technical field [0001] The invention relates to the technical field of continuous casting electromagnetic stirring, in particular to a multifunctional electromagnetic stirrer and an electromagnetic winding connection method for round billet continuous casting. Background technique [0002] A few days ago, electromagnetic stirring has become one of the standard equipment in modern continuous casting production, which plays a vital role in smooth production and improving the quality of slab. According to the installation position of electromagnetic stirring on the continuous casting machine, there are mold electromagnetic stirring, secondary cooling electromagnetic stirring and terminal electromagnetic stirring, etc., or these different types of electromagnetic stirring can be used in combination on the casting machine at the same time. However, no matter where these electromagnetic stirrers are installed in the casting machine or how they are used in combination, the way ...

AI Technical Summary

Problems solved by technology

The advantage of this electromagnetic stirring is that it only uses a set of traveling wave coil windings and a set of power supply, and the conversion of different stirring functions can be realized by changing the coil connection mode; the problem with this stirring device is that there are four independent salient pole type When the linear inductor works in a traveling wave magnetic field, the magnetic circuit closes better, but when the coil connection is changed to a rotating magnetic field, the magnetic field at the same height cannot be closed, resulting in a large leakage flux, that is, when the rotating magnetic field of the stirrer works The central magnetic field is small, which cannot meet the process requirements, and when the function of the helical magnetic field is changed, the leakage magnetic flux exists at the same time; in addition, the use of two-phase electromagnetic stirring is not conducive to the function and stability of the power grid, so the stirrer currently has no industrial application report

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