Automatically controlled underground coal mine gas configuration experiment device

An experimental device and gas technology, applied in gas/liquid distribution and storage, gas and gas/steam mixing, transportation and packaging, etc., can solve the problem of low investment and achieve the effect of controllable precision

Pending Publication Date: 2017-05-31
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this situation, we need to update our concepts and seek effective anti-outburst technical measures with simple process, low investment and effective protection under the premise of ensuring safety. Moreover, with the rapid development of biotechnology, the characteristics of microorganisms to degrade methane are becoming more and more serious. It has been gradually understood and discussed. The discovery of methane-oxidizing bacteria and the revelation of its degradation mechanism provide a basic theoretical basis for the application of microbial methods to eliminate coal methane and effectively control gas disasters. At present, this research is still in the stage of similar simulation in the laboratory. In order to study the characteristics of microorganisms degrading coal mine gas in underground coal mines, it is necessary to accurately configure the gas that exists in various environments underground. As we all know, underground gas is mainly composed of methane gas with a wide concentration range, such as methane in coal The composition is below 90%, the methane composition in the goaf and caving zone is about 20-50%, and the methane composition in the roadway is about 1%. At present, there is no equipment that can meet the precise configuration of gas mixtures with different concentrations in the mine; therefore, provide It is very necessary to have a reasonable design, low cost, safe and efficient, and reliable operation of automatic control coal mine gas configuration experiment device

Method used

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  • Automatically controlled underground coal mine gas configuration experiment device
  • Automatically controlled underground coal mine gas configuration experiment device
  • Automatically controlled underground coal mine gas configuration experiment device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Figure 1-10 As shown, in the touch display controller 31, after setting the cleaning time and the required nitrogen, oxygen, and methane concentration ratios, the cleaning button is opened, and the nitrogen solenoid valve 6 is powered, and the oxygen solenoid valve 13 is powered. A certain methane concentration makes the large-flow methane solenoid valve 20 and the small-flow methane solenoid correspondingly energized, the air intake path of the solenoid valve is opened, the exhaust gas zero-leakage switch solenoid valve 24 is energized, and the exhaust gas recovery pipeline is opened.

[0029] Nitrogen mass flow meter 7, oxygen mass flow meter 14, large flow methane mass flow meter 22 and small flow methane mass flow meter 23 are converted into mass flow meter spool opening amount by touching display controller 31 according to the set proportional parameters At this time, the gas in the steel cylinder is output to the exhaust gas recovery device through the pi...

Embodiment 2

[0031] Such as Figure 1-10 As shown, in the touch display controller 31, the proportion automatic mode is selected by the working mode button, and the gas mixture percentage of any two gases in the three gases is set, wherein the ratio of the methane concentration in the gas mixture is required to be less than 10%, and the gas mixture is turned on. Gas manual shut-off valve 27, so that the gas path of the mixed gas collection device 26 is opened, and at this time, the nitrogen solenoid valve 6, the oxygen solenoid valve 13 and the small flow methane solenoid valve 21 are energized, and the air intake path of each solenoid valve is opened, and the gas mixture is zero. The leakage switch solenoid valve 28 is powered, the mixed gas collection pipeline is opened, and the nitrogen mass flow meter 7, the oxygen mass flow meter 14 and the small flow methane mass flow meter 23 are set by the touch display controller 31 according to the proportional parameters. The parameter is conver...

Embodiment 3

[0034] As shown in 1-9, in the touch display controller 31, the proportional automatic mode is selected by the working mode button, and the gas mixture percentage of any two gases in the three gases is set, wherein the ratio of the methane concentration in the mixed gas is required to be between Between 10% and 90%, open the mixed gas manual stop valve 27 to open the gas path of the mixed gas collection device 26. At this time, the nitrogen solenoid valve 6, the oxygen solenoid valve 13 and the large flow methane solenoid valve 20 are energized, and the solenoid valves of each circuit The valve intake gas path is opened, the mixed gas zero leakage switch solenoid valve 28 is energized, the mixed gas collection pipeline is opened, the nitrogen mass flow meter 7, the oxygen mass flow meter 14 and the large flow methane mass flow meter 22 , is converted into the opening amount of the mass flow meter by the touch display controller 31. At this time, the gas in the steel cylinder pa...

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PUM

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Abstract

The invention relates to an automatically controlled underground coal mine gas configuration experiment device which comprises a methane steel cylinder, an oxygen steel cylinder and a nitrogen steel cylinder, wherein a methane switching valve and a methane pressure-reducing valve are mounted on the methane steel cylinder; the right end of the methane steel cylinder is connected with a methane drying tube; the right end of the methane drying tube is connected with a methane pressure sensor; the right end of the methane pressure sensor is connected with a high-flow methane electromagnetic valve and a low-flow methane electromagnetic valve; the right end of the high-flow methane electromagnetic valve is connected with a high-flow methane mass flow meter; the right end of the low-flow methane electromagnetic valve is connected with a low-flow methane mass flow meter; an oxygen switching valve and an oxygen pressure-reducing valve are mounted on the oxygen steel cylinder; the right end of the oxygen steel cylinder is connected with an oxygen drying tube; the right end of the oxygen drying tube is connected with an oxygen pressure sensor. The experiment device has the advantages of being reasonable in design, low in cost, convenient to install and use, high in working efficiency, economic in manpower, safe and reliable in use, accurate in data, stable in operation, strong in automatic control ability, long in service life, comprehensive in functions and strong in practicability.

Description

technical field [0001] The invention belongs to the technical field of coal mine gas control, and in particular relates to a coal mine underground gas configuration experiment device, in particular to an automatically controlled coal mine gas configuration experiment device. Background technique [0002] Gas is known as the "first killer" of coal mine safety production. Since the founding of the People's Republic of China, my country has always attached great importance to the research work of coal mine gas control technology. After decades of exploration and research, especially the implementation of projects such as the National Natural Science Foundation of China and scientific and technological research during the "Seventh Five-Year Plan" to the "Twelfth Five-Year Plan", it has achieved Many high-level theoretical and technological achievements have formed such as hydraulic fracturing, hydraulic slotting, loose blasting, gas replacement and other enhanced pre-extraction g...

Claims

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Application Information

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IPC IPC(8): B01F5/06B01F3/02B01F15/04F17D1/04F17D3/01B01F23/10
CPCF17D1/04F17D3/01B01F23/19B01F25/452B01F35/83B01F35/883B01F2101/23
Inventor 于红郑磊吴金刚张瑞林王晓丽范迎春
Owner HENAN INST OF ENG
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