Online intelligent identification method and system for blast furnace tapping end point

A blast furnace tapping and intelligent identification technology, applied in the field of blast furnace smelting, can solve problems such as the inability to accurately identify the end point of iron

Pending Publication Date: 2022-05-27
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The online intelligent identification method and system for the blast furnace tapping end point provided by the present invention solves the technical problem that the existing technology cannot accurately identify the current tapping end point

Method used

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  • Online intelligent identification method and system for blast furnace tapping end point
  • Online intelligent identification method and system for blast furnace tapping end point
  • Online intelligent identification method and system for blast furnace tapping end point

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Experimental program
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Effect test

Embodiment 1

[0071] The on-line intelligent identification method for the blast furnace tapping end point provided by the first embodiment of the present invention includes:

[0072] Step S101, collecting the molten iron flow image, and extracting the characteristics of the molten iron flow image according to the molten iron flow image;

[0073] Step S102, collecting molten iron flow data, and extracting short-term time series features of molten iron flow according to the molten iron flow data;

[0074] Step S103, fuse the molten iron flow image features and the molten iron flow short-term time series features to establish a classification prediction model for the tapping process;

[0075] Step S104, according to the classification prediction model of the tapping process, obtain the tapping stage at the current moment;

[0076] Step S105, according to the current tapping stage, identify the blast furnace tapping end point.

[0077] The on-line intelligent identification method for the bl...

Embodiment 2

[0079] The invention classifies the tapping stage of the blast furnace by extracting data time series features such as molten iron flow velocity, temperature, slag-to-iron ratio, etc., as well as the image features of the molten iron flow, and fuses them, determines the blast furnace tapping stage at the current moment through the classification results, and finally relies on The stage classification results are used to calculate the blast furnace tapping end point and its confidence.

[0080] like figure 1 As shown, the method of the embodiment of the present invention is composed of a molten iron flow image data feature extraction module U1, a molten iron flow time series data feature extraction module U2, and a feature fusion and result output module U3, which are described in detail below:

[0081] Hot metal flow image data feature extraction module U1:

[0082] The main function of this module is to extract features from molten iron flow image data through convolutional ...

Embodiment 3

[0151] The specific embodiments of the present invention are further described in conjunction with the accompanying drawings. The present invention is applied to a domestic 2650m 3 on the blast furnace. Use the python-based pytorch deep learning framework to build an intelligent identification model for the end point of iron casting, collect 6 months of molten iron flow image, temperature, silicon content, flow rate and slag-iron ratio data to train the built model. After the training is completed, the blast furnace can be identified. The status of the tapping end point and its confidence. The specific implementation steps for completing the online intelligent identification of the tapping end point are as follows:

[0152] (1) Collect the data of the on-site molten iron flow image, preprocess the image, first filter the original image, use the fast marching algorithm to repair and perform median filtering and dehazing processing on the image, and then limit the use after gra...

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Abstract

The invention discloses a blast furnace tapping end point online intelligent identification method and system, and the method comprises the steps: collecting a molten iron flow image, extracting molten iron flow image features, collecting molten iron flow data, extracting molten iron flow short time sequence features, fusing the molten iron flow image features and the molten iron flow short time sequence features, and building a tapping process classification prediction model; the blast furnace tapping end point is identified according to the tapping stage of the current moment, the technical problem that the current tapping end point cannot be accurately identified in the prior art is solved, the image, the flow velocity, the slag-iron ratio and other data of the high-temperature molten iron flow are obtained through a non-intrusive device, and the identification accuracy of the blast furnace tapping end point is improved. The features of the multi-source data of the molten iron flow are extracted through the deep neural network for fusion, so that the blast furnace tapping end point at the current moment is recognized, the confidence coefficient of the current recognition result is provided, and the method has the advantages of being high in accuracy, stability and adaptability, suitable for blast furnaces of different scales, low in investment cost and the like.

Description

technical field [0001] The invention mainly relates to the technical field of blast furnace smelting, in particular to an on-line intelligent identification method and system for blast furnace tapping end points. Background technique [0002] Iron tapping is the central task of the blast furnace operation in the process of ironmaking. During the blast furnace ironmaking process, with the falling and melting of the charge, molten iron is continuously generated. It is necessary to discharge the molten iron on time to ensure that the actual molten iron volume in the hearth does not exceed the safety. Iron capacity. At the end of the iron tapping process, the tap hole operation needs to be performed. This operation should not be done too early or too late. If it is too early, the slag and iron in the furnace will not be discharged. If it is too long, it may cause a large amount of gas in the furnace. The crushed coke and coke carried will violently wash the hole of the iron hol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V20/00G06V10/62G06V10/74G06V10/764G06V10/80G06V10/82G06K9/62G06N3/04G06N3/08
CPCG06N3/049G06N3/08G06N3/045G06F18/22G06F18/24G06F18/253Y02P90/30
Inventor 潘冬王添宇蒋朝辉桂卫华
Owner CENT SOUTH UNIV
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