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Converter and rocking furnace fault control method and system

A control method and control system technology, which is applied in the field of iron and steel smelting, can solve problems such as the failure of the converter to operate normally and the accidental pouring of molten steel, and achieve the effects of ensuring production efficiency and product quality, reducing accidental pouring, and improving safety

Active Publication Date: 2018-04-13
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a control method and system for the failure of the converter shaking furnace, which solves the problem in the prior art that when the steel tapping signal and the slagging signal appear at the same time, the converter cannot operate normally, and when the tilting angle is above 60 degrees, it will cause The converter tilts downward, causing technical problems of accidental pouring of molten steel, avoiding or reducing accidents of accidental pouring of molten steel in the converter

Method used

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  • Converter and rocking furnace fault control method and system
  • Converter and rocking furnace fault control method and system
  • Converter and rocking furnace fault control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The application provides a control method for a converter shaker failure, including:

[0037] Step SA1: collecting the tapping signal, the slagging signal and the converter shaking speed signal;

[0038] Step SA2: collecting the converter tilting angle signal;

[0039] Step SA3: When the steel tapping signal and the slag discharging signal appear simultaneously, control the converter to only execute the steel tapping command or the slag discharging command according to the converter tilting angle signal.

[0040] Step SA4: When the steel tapping signal or the slag tapping signal appears independently, the converter speed signal is given, and the motor torque reaches a set value, the brake is opened.

[0041] Wherein, in step SA3, when the tapping signal and the slagging signal appear simultaneously, controlling the converter to only execute the tapping command or the slag tapping command according to the converter tilting angle signal includes:

[0042] SA31: When the...

Embodiment 2

[0050] The difference between this embodiment and Embodiment 1 is that the signal processing device uses a programmable logic controller (hereinafter referred to as PLC). Before the PLC is put into use, the specific operations are as follows:

[0051] Step C1: The master controller performs testing of steel tapping, slag tapping, and speed signals, and sends them to the PLC.

[0052] Step C2: Write the logic relationship of the contacts of the brake, frequency converter speed, closing, start and stop, tilting angle and master command.

[0053] Step C3: Write PLC program.

[0054] Step C4: On-site commissioning tests, especially tests at various angles and various operating states.

[0055] Step C5: Complete the debugging and put the program into use.

[0056] Among them, when the steel tapping and slag tapping signals appear at the same time, the tilting angle of the converter is between 2 and 180 degrees, and the PLC program controls the converter 10HZ to return to the vert...

Embodiment 3

[0064] This embodiment provides a control system for a converter shaker failure, including:

[0065] Controller, encoder, signal processing device and frequency converter; Among them, the controller is used to collect the steel tapping signal, slag discharging signal and shaking furnace speed signal, and transmit the steel tapping signal, slag discharging signal and shaking furnace speed signal to the signal processing device; the encoder is used to collect the converter tilting angle signal, and transmits the converter tilting angle signal to the signal processing device; the signal processing device is used to simultaneously receive the tapping signal and the slag signal, according to The converter tilting angle signal obtains the control signal to the converter, and transmits the control signal to the frequency converter; the frequency converter is used to receive the control signal, and controls the converter to only execute the steel tapping command or the slag discharging...

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PUM

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Abstract

The invention discloses a converter and rocking furnace fault control method. The method comprises the following steps that: tapping signals, slagging signals and converter and rocking furnace speed signals are acquired; converter tilting angle signals are acquired; and when the tapping signals and the slagging signals appear simultaneously, a converter is controlled according to the converter tilting angle signals to only execute a tapping instruction or a slagging instruction. The invention also discloses a converter and rocking furnace fault control system. With the converter and rocking furnace fault control method and system of the invention adopted, accidental pouring out of the molten steel of the converter can be avoided or alleviated.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to a control method and system for a converter shaker failure. Background technique [0002] The converter tilting system is driven by four tilting motors at the same time, the tilting speed is controlled between 0.1 and 0.8rpm, and the tilting angle ranges from 0 to ±360°. The converter tilting system has the characteristics of large inertia and heavy load, which requires the motor and its frequency conversion control system to have sufficient starting torque and overload capacity. [0003] At present, each auxiliary point of the master controller of the steelmaking converter shaker is a normally closed auxiliary contact, and there are signals of tapping, slag discharging, non-zero position, zero position, low speed, low and low speed, high speed, high and high speed, and medium speed, which are sent to Programmable logic controller (hereinafter referred to as PLC)...

Claims

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Application Information

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IPC IPC(8): G05B23/02C21C5/50
CPCC21C5/50G05B23/02
Inventor 王景娟
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD