Computerized electromagnet controller and control method thereof of low-voltage electromagnet keeping technology

Abstract

The invention relates to a computerized electromagnet controller and a control method thereof of a low-voltage electromagnet keeping technology. The computerized electromagnet controller comprises a computer control circuit, a high-voltage and normal-voltage control loop, a rectification control circuit and a lifting electromagnet and is characterized in that high voltage and normal voltage especially used for low-voltage electromagnet keeping ingredient mixing are added on the high-voltage and normal-voltage control loop, and low-voltage electromagnet keeping output is arranged in the rectification control circuit. The high voltage and the normal voltage especially used for the low-voltage electromagnet keeping ingredient mixing are added on a high-voltage and normal-voltage regulation circuit of the prior electric control cabinet of an electromagnetic disk; in automatic ingredient mixing, the power is not completely cut off, and low-voltage electromagnet keeping ingredient mixing isautomatically selected by a computer according to the size of the fixed ingredient mixing value; and in this way, the control of the electromagnetic disk over remote charging can be strengthened. Theinvention can enhance the ingredient mixing precision, and the precision can be enhanced to be within 2% by practical measurement so that molten iron ingredients are stable. The invention can also largely reduce the failure rate within 3% by the practical measurement. Because the ingredient adding and mixing time period is shortened, the feeding speed and the melting speed are ensured.

Description

technical field [0001] The invention relates to a lifting electromagnet control device, in particular to a microcomputer iron distribution control instrument and a control method using a low-voltage magnetic preservation technology, which can greatly improve the dynamic batching accuracy and reduce the failure rate. Background technique [0002] In order to ensure the quality of metallurgy, the metal and steel furnace materials of metallurgical casting industrial smelting furnaces are generally loaded with microcomputer electromagnetic iron distribution instruments to automatically control the accurate weighing of furnace materials. The existing computer iron distribution systems on the market use The power-off batching control method is as follows: after the electromagnetic disk is excited and the material is lifted, the computer judges that the weight exceeds a fixed value, and the batching will be carried out. In the process, when the iron material gradually falls, the we...

AI Technical Summary

Problems solved by technology

When the batching value is large or the material block is large, because the electromagnetic disk loses magnetism when the power is cut off and the batching is performed, the material block far away from the bottom of the electromagnetic disk falls faster when only relying on residual magnetism, especially when the setting value is large, it is close to a state of loss of control. , it is more likely to cause batching failure. The current microcomputer iron distribution controller adopts power-off type batching, and the number of failures is more (general failure rate is more than 10%). Even if it succeeds, the error is large (general error is 3%). Often when the melting speed of the smelting furnace is high, the feeding speed cannot be guaranteed, or the molten iron composition fluctuates greatly due to large errors, and the quality of the molten iron decreases.

After inquiry, there is currently no electromagnetic iron distribution controller product that adopts low-voltage magnetic-preserving batching technology

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