Multi-sensor concentrated control method for full-automatic blast furnace dedusting fan control system
A dust removal fan and multi-sensor technology, applied in dust collectors, comprehensive factory control, electrical program control, etc., can solve problems such as difficult mathematical models, inability to determine and control, and nonlinearity
Inactive Publication Date: 2012-11-07
BEIJING JIAOTONG UNIV
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Problems solved by technology
[0003] Due to the complexity of the on-site control of the blast furnace, factors such as the on-site dust density, tapping time, and the synchronization of the main tuyere opening, as well as the interference of the complex electromagnetic environment on the control equipment and other factors, the working conditions of each link in the dust removal system need to be considered. It often has the characteristics of time-varying, non-linear and random, it is difficult to establish an accurate mathematical model, and it cannot be simply determined and controlled by a single indicator
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[0025] In order to enable users to obtain various working parameters of the blast furnace in real time and achieve the purpose of reducing the labor intensity and work risk of workers, according to the environment of the ironworks, a combination of infrared detection and video monitoring and other multi-sensing sources is designed. The monitoring layout and the lumped control system of the main computer.
[0026] In this embodiment, the infrared temperature sensor is used as the first sensing source, and the real-time monitoring video image of the taphole obtained from the camera in the taphole area is used as the second sensing source. The opening / closing in-position signal is used as the third sensing source, and the over-torque signal of the taphole main damper and the tank mouth damper is used as the fourth sensing source. Perform aggregate analysis and processing on multi-channel sensor signals.
[0027] The main computer control system adopts the LabVIEW tool launched b...
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The invention discloses a multi-sensor concentrated control method for a full-automatic blast furnace dedusting fan control system. The method comprises the following steps that: an industrial personal computer acquires data of temperature sensors in tapping areas, and judges whether tapping is realized in the tapping areas according to the acquired values, and if the tapping is realized, the industrial personal computer controls a main air door for a tapping area to open; the industrial personal computer adjusts the frequency of a frequency converter according to the opening of the main air door; the industrial personal computer acquires data of temperature sensors at various tank opening air doors, and judges whether tapping is realized at various tank opening air doors according to thevalues of the temperature sensors, and when that the tapping is realized at a certain air door is judged, the industrial personal computer controls the tank opening air door to open; the industrial personal computer adjusts the frequency of the frequency converter according to the opening of the opened main air door and the various tank opening air doors; and when the tapping is determined to be finished according to the values of the temperature sensors in the tapping areas and video image data, the industrial personal computer closes the air doors. By a signal acquisition, analysis, computation and feedback method and a high-efficiency and stable electronic means, the full-automatic accurate control is realized.
Description
technical field [0001] The invention relates to the field of automatic control and information processing, specifically a multi-sensor lumped control method for a fully automatic blast furnace dust removal fan control system, thereby realizing the aggregation, analysis and processing of multi-sensor signals, and achieving the goal of controlling the dust removal fan. Intelligent control of the system. Background technique [0002] When iron-making blast furnaces are tapping, because the high-temperature molten iron is oxidized by contact with air, a large amount of dust is often generated at the taphole and the mouth of the tank. At the same time, the gas that is not fully burned in the ironmaking blast furnace and the waste gas generated after combustion are all discharged through the taphole to form flue gas. At this time, it is usually required to install dust removal pipes at the blast furnace taphole and tank mouth. On the one hand, the dust particles will be filtered ...
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IPC IPC(8): G05B19/418C21B7/22
Inventor 延凤平陶沛琳李琦刘鹏彭万敬冯亭田鹏飞孙欣欣
Owner BEIJING JIAOTONG UNIV