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Detection device and calibration method for electrode lifting system of LF furnace

A technology of electrode lifting and detection devices, which is applied in the field of refining, can solve the problems of control system stability, low efficiency, and poor control effect, and achieve the effect of reducing maintenance difficulty, reducing maintenance time, and efficient operation

Pending Publication Date: 2022-01-21
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] In order to overcome the problem that the replacement of the existing hydraulic servo valve or the change of the system pressure will cause the stability and high efficiency of the original control system to decrease, resulting in the deterioration of the control effect, the present invention provides an electrode lifting system for LF furnace Detection device and calibration method, the present invention corrects the control output of the electrode regulator by calibrating the electrode lifting system of the LF furnace before production, and avoids readjusting the parameters of the electrode regulator. Long-term, stable and efficient operation provides a strong guarantee

Method used

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  • Detection device and calibration method for electrode lifting system of LF furnace
  • Detection device and calibration method for electrode lifting system of LF furnace

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Embodiment 1

[0024] In order to overcome the problem that the replacement of the existing hydraulic servo valve or the change of the system pressure will cause the stability and high efficiency of the original control system to decrease, resulting in the deterioration of the control effect, the present invention provides such as figure 1 Shown is a detection device and calibration method for the electrode lifting system of an LF furnace. The present invention realizes the correction of the control output of the electrode regulator through the calibration of the electrode lifting system and avoids readjusting the parameters of the electrode regulator. This method reduces The difficulty of on-site maintenance provides a strong guarantee for the long-term, stable and efficient operation of the entire electrode regulator.

[0025] A detection device for an electrode lifting system of an LF furnace, comprising an electrode regulator 1 and an electrode 2, a proportional valve 4 and an electrode l...

Embodiment 2

[0030] Based on Embodiment 1, in this embodiment, preferably, the electrodes 2 are three-phase electrodes.

[0031] Preferably, the electrode lifting mechanism 5 includes at least a hydraulic cylinder and a conductive cross arm, and the hydraulic cylinder drives the conductive cross arm to move up and down.

[0032] Preferably, the end of the conductive cross arm is connected to the electrode 2 .

[0033] Preferably, the specific steps of determining the position of the electrode 2 are as follows: the electrode regulator 1 drives the valve core opening of the proportional valve 4 to control the upward or downward movement of the electrode 2 .

[0034] Preferably, the electrode position of the electrode 2 is fed back to the electrode regulator 1 through the electrode position detector 3; when the electrode position detector 3 is the same as the set position, the electrode regulator 1 stops controlling the proportional valve 4, so that it is connected with the electrode lifting ...

Embodiment 3

[0037] Based on Embodiment 1 or 2, in this embodiment, preferably, the lower end of the electrode regulator 1 is connected with a calibration system.

[0038] Preferably, the calibration system includes a data acquisition module 6, a data conversion module 7, an electrode lifting system model calibration module 8 and a data writing module 9; the data acquisition module 6 is connected to the data interface at the lower end of the electrode regulator 1 , the data writing module 9 is connected to the data interface on the left side of the electrode regulator 1; the data acquisition module 6 is used to collect the threshold value of the proportional valve 4, the detection value of the electrode position detector 3, the electrode regulator The control output time of 1 and the displacement of electrode 2; the data conversion module 7 is used to uniformly convert the collected data to the required format; the electrode lifting system model calibration module 8 will convert the data in...

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Abstract

The invention provides a detection device and a calibration method for an electrode lifting system of an LF furnace, the device comprises an electrode regulator and an electrode, and a proportional valve and an electrode lifting mechanism are sequentially connected between the lower part of the electrode regulator and the lower part of the electrode; and an electrode position detector is arranged between the upper part of the electrode regulator and the upper part of the electrode. The electrode is a three-phase electrode. The electrode lifting mechanism at least comprises a hydraulic cylinder and a conductive cross arm, and the hydraulic cylinder drives the conductive cross arm to move up and down. The tail end of the conductive cross arm is connected with the electrode. According to the device and the method, the condition that parameters of the electrode regulator need to be readjusted in the production process is avoided, the electrode regulator can stably work in the optimal control state, the field maintenance difficulty and maintenance cost are greatly reduced, and a powerful guarantee is provided for long-term, stable and efficient operation of the whole electrode regulator.

Description

technical field [0001] The invention belongs to the technical field of refining, and in particular relates to a detection device and a calibration method for an electrode lifting system of an LF furnace. Background technique [0002] The electrode regulator in the LF furnace control system is the core link of the entire control system. According to the characteristics of the controlled object, the parameters of the control system are optimized and adjusted to achieve the optimization of the electrode control system, so as to achieve the stability of the control system in the entire smelting process. Efficient operation realizes shortening of smelting cycle, improvement of heating efficiency and reduction of unit energy consumption index. However, often with the replacement of the hydraulic servo valve or the change of the system pressure, the characteristics of the controlled object will also change. If the control parameters cannot be adjusted in a timely and effective mann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00F27D11/10F27D21/00
CPCG01M13/00F27D11/10F27D21/00
Inventor 张东佟冰贾涛董波李嘉慧
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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