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Mining accurate adjusting position-control air window and control method

A kind of wind window and precise technology, which is applied in mine/tunnel ventilation, mining equipment, earth-moving drilling, etc., can solve the problems of unified management, manual adjustment of air volume, huge engineering, time-consuming and labor-intensive, etc.

Active Publication Date: 2021-08-20
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the windshields of mines include push-pull windshields, manual plate-type windshields, louver windshields, dial windshields, etc. In order to meet the ventilation requirements of daily production in coal mines, it is necessary to frequently adjust the openings of these windshields Manual adjustment of the area is time-consuming and labor-intensive. Due to the large number of downhole adjustment windows, it is a huge project for the ventilation team to manually adjust the air volume of these adjustment windows, and the windows are basically manually adjusted to a certain opening and will not change. , there is no way to feed back the opening of the windshield to Inoue for unified management

Method used

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  • Mining accurate adjusting position-control air window and control method
  • Mining accurate adjusting position-control air window and control method
  • Mining accurate adjusting position-control air window and control method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] like figure 1 and figure 2 As shown, the number of air holes of the position control air window is 8. When all 8 air holes are open, the air volume passing through is 255; when all 8 air holes are closed, the air volume passing through is 0m 3 / h, you can achieve 0~255-bit air volume control through 8-bit air holes;

[0032] like Figure 4 As shown, the air holes are sorted in binary order according to the number, and the required air volume is 0m 3 / h~255m 3 When between / h, convert the required air volume into 8-bit binary, for example, the required air volume is 78m 3 / h, converted to binary, it is 01001110, the corresponding adjustment air holes 2 numbered 1, 5, 6, and 8 are closed, and the corresponding adjustment air holes 2 numbered 2, 3, 4, and 7 are opened. .

Embodiment 2

[0034] Use the computational fluid dynamics software Fluent to carry out numerical simulation to establish simulated roadways, such as Figure 5 As shown, the simulated roadway, including the simulated roadway air inlet 5, the simulated roadway air outlet 6, the main roadway 7, the branch roadway 8, the multi-level adjustment position control air window 9, the simulated roadway air inlet 5 is the main roadway airflow inlet, so The simulated tunnel air inlet 5 is the main tunnel air flow inlet, the simulated tunnel is divided into a main tunnel 7 and a branch tunnel 8, and a position control air window 9 with multi-level adjustment is installed in the main tunnel. There are 4 adjusting air holes 2 of different sizes on the wind window 9 .

[0035] The boundary conditions of the simulated roadway are: the wind speed at the entrance is constant at 4m / s, and the cross-sectional area of ​​the main roadway 7 is 200mm. There are 4 adjusting air holes 2 in the position control air wi...

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Abstract

The invention discloses a mining accurate adjusting position-control air window and a control method, and are suitable for underground coal mines. The air window comprises a multi-stage adjusting position-control air window, the multi-stage adjusting position-control air window comprises an air window plate, a plurality of adjusting air holes with different sizes are formed in the air window plate, each adjusting air hole is provided with a serial number and is provided with an opening and closing control mechanism capable of being adjusted according to needs, and when air hole sealing covers with serial numbers are independently opened, the amount of air passing through the air hole sealing covers is increased from small to large. Multi-stage accurate adjustment of the mine air volume is achieved, the accuracy and stability of the opening degree of the air window are guaranteed, the defect that the mine air window is poor in air adjustment quantificaiton is overcome, air volume adjustment is convenient and accurate, different ventilation volumes can be automatically and rapidly adjusted according to the needs, the safety and reliability of air adjustment of a mine ventilation system are effectively improved, and intelligent mine management is facilitated.

Description

technical field [0001] The invention relates to an air window and a control method, and is especially suitable for a mine-used precise adjustment position-controlled air window and a control method used in underground tunnels of coal mines Background technique [0002] The adjusting air window is the most commonly used tunnel air volume adjustment device in coal mines. Its function is to adjust the air volume of the roadway and create conditions for the on-demand distribution of the air volume in the working face and other places where the wind is used. In the underground production process, when the ventilation system changes, it is often necessary to adjust the air volume in real time. The stability and reliability of the air volume adjustment in the tunnel is the technical basis for determining whether the entire mine ventilation system can safely and effectively complete the ventilation task. [0003] At present, there are push-pull adjustable windshields, manual plug-i...

Claims

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Application Information

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IPC IPC(8): E21F1/10E21F1/12E21F17/18E21F17/00
CPCE21F1/10E21F1/12E21F17/18E21F17/00
Inventor 蒋曙光陶奕帆吴征艳裴晓东郝海清尹晨晨赵逸赟
Owner CHINA UNIV OF MINING & TECH