A method and system for early warning of coal mill blockage

A technology for coal pulverizers and blocking grinding, applied in the information field of coal pulverizers, can solve the problems of indeterminate time length, slowness, and difficulty in obtaining accurate judgments.

Active Publication Date: 2022-04-01
北京工业大数据创新中心有限公司
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Problems solved by technology

[0006] 2) Mill blocking is usually a very slow process, the length of the process is not fixed, it may be very long or very short;
[0008] Based on the above points, it is usually difficult to obtain an accurate judgment only by relying on the threshold alarm method commonly used in the industrial field

Method used

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  • A method and system for early warning of coal mill blockage
  • A method and system for early warning of coal mill blockage
  • A method and system for early warning of coal mill blockage

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Embodiment Construction

[0049] Exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

[0050] Such as figure 1 As shown, the embodiment of the present invention provides a coal mill blockage early warning method, including:

[0051] S1: According to the coal feeding amount data of the coal mill, identify the coal feeding working condition of the coal mill, and obtain the identification result;

[0052] S2: According to the identification result, moni...

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Abstract

The present invention provides a coal mill blockage early warning method and system. The method includes: identifying the coal feeding condition of the coal mill according to the coal feeding data of the coal mill, and obtaining the identification result; according to the identification As a result, monitor the running state of the coal mill and obtain the monitoring results; according to the monitoring results, divide the risk intervals of the coal supply data to obtain the time series data of the continuous risk intervals; the time series data of the continuous risk intervals Perform trend analysis and prediction to obtain analysis and prediction results; output coal mill blocking and grinding warning levels according to the analysis and prediction results. The technical solution of the present invention realizes hierarchical alarm for coal mill blocking and grinding through hierarchical risk research and judgment and continuous risk window division, window feature extraction and trend analysis and prediction based on time / frequency domain feature analysis.

Description

technical field [0001] The invention relates to the field of information technology of coal pulverizers, in particular to a coal pulverizer blockage early warning method and system. Background technique [0002] Coal pulverizer is an important auxiliary equipment in coal-fired power plants. It grinds raw coal into coal powder as raw material for boiler combustion. [0003] Coal mill blockage is a common abnormal working condition, which may lead to increased power consumption and large discharge of pebble coal, or unplanned shutdown of equipment and damage to equipment parts in severe cases. [0004] The coal mill system mainly has the following characteristics: [0005] 1) It has the characteristics of strong coupling, large inertia and nonlinearity; [0006] 2) Mill blocking is usually a very slow process, the length of the process is not fixed, it may be very long or very short; [0007] 3) Various working conditions such as coal grinding and coal feeding conditions of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/04G06F16/2458
CPCY02P90/30
Inventor 王吉东李闯孙忠诚马国田春华
Owner 北京工业大数据创新中心有限公司
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