Extraction control for coal mine gas extraction control system
A coal mine gas and control system technology, which is applied in gas emission, mining equipment, earth-moving drilling, etc., can solve the problems of increasing greenhouse gas content, waste of electric energy, low gas concentration, etc.
Active Publication Date: 2015-04-22
SHANDONG ANYI MINING EQUIP CO LTD
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Problems solved by technology
At this time, due to the low concentration of the gas pumped to the ground, it cannot meet the daily use standards and can only be discharged into the atmosphere, increasing the content of greenhouse gases in the atmosphere
When the gas concentration extracted is low, the extraction pump still performs extraction at the original speed, resulting in a waste of electric energy
At the same time, the gas in the coal seam seeps out from the cracks as the pressure changes, resulting in an increase in the gas concentration in the local area outside the coal seam wall, which has the risk of gas explosion
Method used
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[0127] Figure 1~4 It is the best embodiment of the present invention, below in conjunction with attached Figure 1~4 The present invention will be further described.
[0128] Such as figure 1 As shown, the coal mine gas drainage control system of the present invention includes a controller 4 located on the ground, a frequency converter 3 , a wireless data transmission terminal DTU13 and a plurality of drainage pumps 2 . The wireless data transmission terminal DTU13 is connected with the controller 4, and the staff can send control signals to the controller through the wireless data transmission terminal DTU13 to realize remote control, including the control of the drainage pump 2 through the controller 4, and at the same time, through the wireless data transmission terminal DTU13 The transmission terminal DTU13 sends a control command to the controller 4 to query the parameters of the corresponding pipeline. By setting the wireless data transmission terminal DTU13, it is co...
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The invention relates to a coal mine gas extraction control system and extraction control method, and belongs to the field of coal mine gas extraction devices. The coal mine gas extraction control system comprises an extraction pump (2), an extraction main pipe (6), a plurality of mining area main pipe adjusting valves (8) and a plurality of mining area branch pipes (11), and is characterized in that a main pipe detection adjusting device connected with a controller (4) is installed on the extraction main pipe (6), mining area detection adjusting devices connected with the controller (4) at the same time are installed on the mining area main pipe adjusting valves (8), the controller (4) is connected with a frequency changer (3), and the frequency changer (3) is connected with the extraction pump (2). The coal mine gas extraction control method includes the extraction main pipe control process and the mining area main pipe control process. The valve opening and the rotation speed of the extraction pump in mining areas are adjusted through the controller and the frequency changer according to specific concentration of the mining areas, the energy use ratio is improved, the energy waste is avoided, and meanwhile the availability of extracted gas is guaranteed.
Description
technical field [0001] The invention relates to a drainage control method of a coal mine gas drainage control system, which belongs to the field of coal mine gas drainage equipment and methods. Background technique [0002] Gas drainage is to use the negative pressure caused by mechanical equipment and special pipelines to extract the gas in the coal seam and transport it to the ground or other safe places. Gas drainage can reduce the amount of gas emitted from the mine and the gas concentration in the mining space, reducing gas hidden dangers and various gas accidents. It is a preventive measure to ensure safe production. [0003] Due to the complex geology of coal seams in my country, the distribution of gas content accumulated in the coal seam is uneven. When the gas starts to be extracted, the external pressure of the coal seam wall is greater than the internal pressure. The cracks in the coal seam wall are enlarged, and the air outside the coal seam wall enters the coal...
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IPC IPC(8): E21F7/00
Inventor 王晓军李研徐伟杰李寿山孙文龙
Owner SHANDONG ANYI MINING EQUIP CO LTD