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Method and device for detecting draught fan insufficient output fault

A technology for fan output and fault detection, applied in mechanical equipment, machines/engines, non-variable-capacity pumps, etc., can solve problems such as data distortion, affecting the accuracy of fault sources, and achieve the effect of improving operating efficiency

Active Publication Date: 2013-05-15
LAIWU IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of on-site space and the large number of elbows and variable diameters in the pipe network, there are very few straight measuring points that meet the testing standards. Therefore, the detected data will be distorted, which directly affects the ability to analyze and judge the fault source. accuracy

Method used

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  • Method and device for detecting draught fan insufficient output fault
  • Method and device for detecting draught fan insufficient output fault
  • Method and device for detecting draught fan insufficient output fault

Examples

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Embodiment 1

[0031] Because the flue gas in the casthouse has a certain temperature, the temperature of the dust suction hood can reach more than 200°C, which belongs to high-temperature flue gas, and the temperature before entering the dust collector is also about 80°C. The present invention utilizes the temperature characteristics of the flue gas in the casthouse , providing a fault detection method for insufficient fan output, figure 1 It is a schematic flowchart of the method provided in Embodiment 1 of the present invention, the method may include:

[0032] S101: Obtain the temperature values ​​of each detection point in the pipeline in a preset range.

[0033] S102: Obtain the number of detection points in the pipeline with a preset range whose temperature value is greater than a first set threshold.

[0034] S103: Determine whether the number of detection points whose temperature values ​​are greater than the first set threshold in the pipeline in the preset range is greater than t...

Embodiment 2

[0039] Embodiment 2 of the present invention provides a fault detection method for insufficient fan output, figure 2 A schematic flow chart of the method, the method may include:

[0040] S201: Obtain the temperature values ​​of each detection point in the pipeline within a preset range.

[0041] S202: Perform data processing on the temperature values ​​of each detection point in the pipeline in the preset range, and generate a temperature field distribution map corresponding to the temperature values ​​and colors.

[0042] S203: Obtain the number of detection points in the pipeline with a preset range whose temperature value is greater than a first set threshold.

[0043] S204: Determine whether the number of detection points whose temperature values ​​are greater than the first set threshold in the pipeline in the preset range is greater than the second set threshold.

[0044] S205: If the number of detection points whose temperature value is greater than the first set th...

Embodiment 3

[0052] Embodiment 3 of the present invention provides a fault detection device for insufficient fan output, image 3 It is a schematic structural diagram of the device, and the fault detection device includes: a first acquisition module 101 , a second acquisition module 102 , a judgment module 103 and a determination module 104 .

[0053] The first acquisition module 101 is configured to acquire the temperature values ​​of each detection point in the pipeline within a preset range.

[0054] The second acquiring module 102 is configured to acquire the number of detection points whose temperature values ​​are greater than the first set threshold in the pipeline within the preset range.

[0055] The judging module 103 is configured to judge whether the number of detection points whose temperature values ​​acquired by the second acquiring module 102 are greater than the first set threshold is greater than the second set threshold.

[0056] The determination module 104 is configur...

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Abstract

The invention provides a method for detecting a draught fan insufficient output fault and a device for detecting the draught fan insufficient output fault. The method includes the steps: obtaining a temperature value of each detecting point in a pipeline in a preset range; obtaining the number of detecting points with the temperature value in the pipeline in the preset range larger than a first set threshold value; judging whether the number of the obtained detecting points is larger than a second set threshold value, if the number of the obtained detecting points is larger than the second set threshold value, flow of high temperature smoke and gas in the pipeline in the preset range is large, and poor smoothness of pipeline air-in in the preset rang is determined. The characteristics of the temperature of the smoke and the gas in the pipeline are used, according to the obtained temperature values of the detecting points in the pipeline and the number of the detecting points with the temperature values larger than the threshold values, the pipeline with large flow of high temperature smoke and gas is judged, and therefore a pipeline zone which is not smooth in air-in and air-out can be easily determined so as to provide evidences for further improving running efficiency of the draught fan.

Description

technical field [0001] The invention relates to the technical field of fault detection of dust removal equipment, in particular to a fault detection method and device for insufficient fan output. Background technique [0002] Ironmaking blast furnaces will generate a lot of smoke and dust during the tapping process. According to ironmaking design specifications and environmental protection requirements, pollution sources must be effectively controlled. Therefore, dust removal equipment is usually equipped for ironmaking blast furnaces. With the large-scale ironmaking blast furnace and high standardization of environmental protection requirements, the requirements for the dust removal equipment matched with the ironmaking blast furnace have also been further increased. Usually, the dust removal equipment selected is of high power and large air volume. [0003] Insufficient fan output of dust removal equipment is a common fault of dust removal equipment. The existence of fault...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00
Inventor 亓玉敏赵兴永杜宪伟张海港郎达慧
Owner LAIWU IRON & STEEL GRP
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