A method of obtaining the reactance of the conductive cross arm of the electric fused magnesium furnace

Abstract

The invention provides a method of obtaining reactance of a conductive transverse arm of a fused magnesium furnace. The method of obtaining reactance of a conductive transverse arm of a fused magnesium furnace includes the following steps: taking the section of a conductive transverse arm as a rectangle frame section, dividing the section of the conductive transverse arm into several small rectangles, and utilizing a geometrical mean distance formula of a complicated graph to obtain the geometrical mean distance of the section; utilizing the solved geometrical mean distance of the single-phase conductive transverse arm section and the mutual geometrical mean distance among three phases to obtain the self-inductance of the single-phase conductive transverse arm and the mutual inductance among each phase; and according to a reactance formula, obtaining the reactance of the conductive transverse arm of a fused magnesium furnace. As the self geometrical mean distance of the section of the conductive transverse arm is processed according to the complicated geometrical graph and the mutual influence among each phase is considered, the result obtained through the method of obtaining reactance of a conductive transverse arm of a fused magnesium furnace is relatively more accurate. The method of obtaining reactance of a conductive transverse arm of a fused magnesium furnace is suitable for obtaining the reactance value of the conductive transverse arm made of different materials and having different structures and spatial arrangement, of the fused magnesium furnace, and has relatively higher accuracy.

Description

technical field [0001] The invention relates to the field of obtaining reactance of metallurgical equipment, in particular to a method for obtaining the reactance of a conductive cross arm of an electric fused magnesium furnace. Background technique [0002] The design parameters of electrical and electric furnaces are the key to obtain good technical and economic indicators when using fused magnesia furnaces to produce magnesium oxide and other products. The design of the short network of the fused magnesium furnace is closely related to the production technology and equipment investment. The conductive cross arm is a key part of the short network of the fused magnesium furnace, which is required to be light in weight, good in rigidity, small in reactance, less in maintenance and long in life. It is not only used to clamp and support the smelting electrodes, but also as a conductor connecting the electrodes to transmit electric energy. According to the research, the curre...

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Problems solved by technology

Among them, the resistance part accounts for a small proportion in the impedance, so the size of the conductive cross-arm reactance largely determines the amount of power loss, which in turn affects the improvement of the effective power of the fused magnesium furnace

[0003] The conductive cross arm of the fused magnesium furnace is characterized by large current, large cross-section, complex shape and harsh working environment

In the current research on the reactance of the conductive cross-arm, most of them use empirical formulas for theoretical estimation, which often simplifies the solution to the geometric mean distance of the cross-section of the conductive cross-arm, and ignores the interaction between the three-phase conductive cross-arms, resulting in deviations in estimation results. Larger, which is not conducive to the subsequent prediction of the power loss of the conductive cross arm of the fused magnesium furnace

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