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Positioning control system for oxygen lance device

A technology of positioning control and oxygen lance, applied in the direction of manufacturing converters, etc., can solve the problem of low positioning accuracy, and achieve the effect of improving positioning accuracy, ensuring full-process accuracy, and eliminating low positioning accuracy.

Inactive Publication Date: 2015-12-30
武汉钢铁有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a positioning control system for the oxygen lance device, which solves the technical problem that the positioning accuracy of the existing oxygen lance device transmission system is not high when approaching the target position, and ensures the whole process accuracy of the oxygen lance device positioning

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  • Positioning control system for oxygen lance device
  • Positioning control system for oxygen lance device

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Embodiment Construction

[0026] In order to solve the technical problem of low positioning accuracy of the existing oxygen lance device transmission system when approaching the target position, the embodiment of the present invention provides a positioning control system for the oxygen lance device, the general idea is as follows:

[0027] The real-time detected gun position detection value is sent back to the programmable logic controller through the position encoder. The programmable logic controller sends start-stop command and speed control command to the frequency converter through logic calculation. Then the inverter acts as the driving side to convert the fixed AC power supply into the electric energy with variable frequency and certain torque and transmit it to the oxygen lance motor according to the instructions of the programmable logic controller. The oxygen lance motor drives the oxygen lance device to move, and reaches the gun position corresponding to each gun position setting value in t...

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Abstract

The invention discloses a positioning control system for an oxygen lance device. The positioning control system comprises a frequency converter, a position encoder, a programmable logic controller (PLC) and an oxygen lance motor. The position encoder is used for detecting the lance position detection value of the oxygen lance device in real time and sending the detection value back to the PLC in the process that the oxygen lance motor drives the oxygen lance device to move. The PLC is used for generating a speed control instruction and a starting and stopping instruction matched with the current lance position difference according to a current lance position set value and the lance position detection value and sending the instructions to the frequency converter. The frequency converter at least controls the oxygen lance motor according to the speed control instruction and the starting and stopping instruction, so that the oxygen lance motor drives the oxygen lance device to continuously move to the lance position corresponding to the current lance position set value. It can be guaranteed that the oxygen lance device stably and rapidly arrives at the set lance position even in times of decelerated operation, and thus the technical problem of being low in positioning accuracy when an existing oxygen lance device drive system approaches a target position is solved. Hence, the whole-process positioning accuracy of the oxygen lance device is guaranteed.

Description

technical field [0001] The invention relates to the field of converter steelmaking in the metallurgical industry, in particular to a positioning control system for an oxygen lance device. Background technique [0002] The converter steelmaking process is a chemical reaction process in which oxygen is continuously blown into the converter for smelting. During blowing, the oxygen lance device is required to be lowered to a certain height from the liquid level of the molten pool in the furnace, and its position should be adjusted with the change of smelting time and steel type. The inaccurate position of the oxygen lance device will directly affect the decarburization and manufacturing in the steelmaking process. Slag, temperature rise and slag splashing protect the furnace process, which leads to low steelmaking hit rate and difficulty in smooth blowing process. [0003] With the widespread use of vector control and torque control in the control of AC frequency converters, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/30
Inventor 韩超钱辉
Owner 武汉钢铁有限公司
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