Simple and convenient goaf bundle pipe gas extraction device and method

A technology for gobs and gas devices, applied in sampling devices, safety devices, mining equipment, etc., can solve the problems of power consumption, distance from the ground, and high price of explosion-proof air pumps, and achieve the effect of saving manpower and energy

Active Publication Date: 2015-03-25
ANHUI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Since the air pump belongs to electrical equipment, the requirements for using electrical equipment underground are very strict. It must be a special explosion-proof air pump to be used, and the special explosion-proof air pump is more expensive.
[0005] 2. The environmental conditions of the underground working face are very harsh, the distance from the ground is far away, and the air pump is very heavy (about 300 kg in weight), so it is very troublesome to transport the air pump from the ground to a suitable position on the underground working face
[0006]

Method used

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  • Simple and convenient goaf bundle pipe gas extraction device and method
  • Simple and convenient goaf bundle pipe gas extraction device and method
  • Simple and convenient goaf bundle pipe gas extraction device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1: as figure 1 , figure 2 and image 3 As shown, the device of the present invention mainly includes: gas drainage pipeline (1), Φ219 main pipe (2), seven six-point ball valves (4, 7, 9, 17-20), flow meter (3), connecting Pipe (5), drain pipe (6), sampling connecting pipe (8), rubber pipe (10), pump (11), connecting pipe between dry pipe and bundle pipe (13-16), 4 bundle pipes (21- 24), pre-embedded dry pipe (25), hose (39), the Φ219 dry pipe (2) is connected to the gas extraction pipeline (1) through the connecting pipe (5); Arrange the flowmeter (3) and six-point ball valve (4); arrange the drain pipe (6) at the bottom of the Φ219 main pipe (2); arrange the six-point ball valve (7) at the drain pipe (6); the embedded The main pipe (25) is connected with the flexible pipe (39), and one end of each bundle pipe (21-24) inside it is arranged at the corresponding goaf extraction point (26-29), and the other end is connected between the main pipe and the On ...

Embodiment 2

[0030] Embodiment 2: as figure 1 , figure 2 and image 3 As shown, when studying the "three zones" of coal spontaneous combustion in the goaf (34), in order to reduce the experimental error, usually four bundle tubes (21-24) are pre-buried in the upper and lower sides of the goaf (34). Eight sampling points (26-33) in different gobs were used for gas sampling. Therefore, it is also necessary to carry out gas sampling to the 4 goaf sampling points (30-33) on the upper side of the goaf (34), and the device and method for gas sampling are the same as in Example 1.

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Abstract

The invention discloses a simple and convenient goaf bundle pipe gas extraction device and method. The device mainly comprises a gas extraction pipeline, a phi 219 main pipe, seven one-sixth ball valves, a flow meter, a connecting pipe, a water drainage pipe, a sampling connecting pipe, a rubber pipe, a pump, connecting pipes of the main pipe and bundle pipes, the four bundle pipes, an embedded main pipe and a hose. The method includes the steps that gas is extracted from the interior of a goaf through negative pressure in the gas extraction pipeline, gas in the goaf is driven by negative pressure in the gas extraction pipeline to flow into the phi 219 main pipe through the bundle pipes, the pump is connected with the phi 219 main pipe through the rubber pipe to pump a proper amount of gas, sampled gas is collected in a sealed mode through sampling bags and analyzed through a gas chromatograph finally, the concentration change rule of various types of gas in the goaf is acquired, and on the basis, the positions and the ranges of three residual coal spontaneous combustion zones in the goaf are judged. The device and method have the advantages of being safe, efficient, simple, convenient to use and capable of saving energy.

Description

technical field [0001] The invention relates to a gas extraction device and method, in particular to a gas acquisition device and method in a mine goaf. Background technique [0002] The gas extraction analysis of pre-buried bundle pipes in goaf is the main method to study the oxidation distribution of goaf residual coal and determine the distribution range of "three zones" of spontaneous combustion of coal residual coal in goaf. [0003] At present, most of the mine goafs in our country use the negative pressure generated by the special explosion-proof air pump to extract the gas in the goaf through the bundled tubes. Although this method can directly solve the problem of gas extraction in the goaf, there are many shortcomings in the gas extraction system of the air pump: [0004] 1. Since the air pump belongs to electrical equipment, the requirements for using electrical equipment underground are very strict. It must be a special explosion-proof air pump to be used, and t...

Claims

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Application Information

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IPC IPC(8): E21F7/00
CPCE21F7/00G01N1/22G01N1/24
Inventor 唐明云戴广龙韩柏青周亮秦汝祥贺正茂吴彬尹晓雷高盼军郎嘉琪
Owner ANHUI UNIV OF SCI & TECH
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