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Gas sample acquisition and analysis device for coal mine gob

A technology for collecting and analyzing gobs, applied in mining devices, mining equipment, earthwork drilling, etc., can solve problems affecting the accuracy of gas sample analysis in gobs, adding current lines and interfaces, and gas sample analysis errors, etc. Achieve the effects of avoiding errors, quick opening and closing, and convenient operation

Inactive Publication Date: 2013-05-22
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In coal mines, this not only requires the air pump to be explosion-proof, but also requires an external power supply, adding current lines and interfaces, which makes the operation very troublesome and adds a lot of safety factors; moreover, the collected gas samples must be obtained. Re-analysis on the ground will inevitably cause the escape of gas samples and the mixing of other gases, resulting in gas sample analysis errors and affecting the accuracy of gas sample analysis in the goaf, thus affecting the judgment of coal spontaneous combustion and the division of three zones

Method used

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  • Gas sample acquisition and analysis device for coal mine gob
  • Gas sample acquisition and analysis device for coal mine gob

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A gas sample collection and analysis device for underground coal mine goaf, which is composed of a gas sample collection part and a multi-parameter measuring instrument, that is, the gas sample collection part is a sleeve, and a piston is installed in the sleeve, and the piston and the plane gear rod Connected, the flat gear lever meshes with the small gear of the double-layer gear outside the sleeve, and the large gear of the double-layer gear meshes with the crank gear. When the crank gear moves clockwise through the handle, the double-layer gear also rotates clockwise. When the flat gear rod is driven by the small wheel of the double-layer gear to pump air outward; the intake valve automatically opens the valve under the action of the internal and external pressure difference to allow the gas sample to enter the sleeve.

Embodiment 2

[0014] After the device completes the pumping action, the spring will recover its deformation, and pull the crank gear to return counterclockwise, so that the crank gear drives the double-layer gear to move counterclockwise, and the double-layer gear pushes the flat gear rod to move downward, and the intake valve will move downward due to the pressure. The differential action is automatically closed, and the outlet valve is automatically opened to complete the exhaust process.

Embodiment 3

[0016] Before the gas sample collection device collects and analyzes gas samples, the inlet pipe is connected to the bundle pipe embedded in the goaf, and the outlet pipe is emptied. The gas is discharged, and then the gas sampling bag is connected to the gas outlet pipe, and the exhaust sample is drawn again until the gas sampling bag is full of gas samples.

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Abstract

The invention discloses a gas sample acquisition and analysis device for a coal mine gob, relating to safety production equipment in coal industry, in particular relating to a simple, fast and safe gas sample acquisition and analysis device for a coal mine gob, which is suitable for one person to operate fast and conveniently in limited space down a mine to finish gas sample acquisition. The gas sample acquisition and analysis device comprises a gas sample acquisition part and a multi-parameter measurement part, and is characterized in that a piston is arranged in a sleeve, the piston is meshed with the pinion of the double-layer gear outside the sleeve through a planar gear rod, and a crank gear drives the double-layer gear to rotate through the alternative action between a handle and a return spring to form an integral gas acquisition system; three ports are arranged at a tail end of the sleeve, a middle port is connected with a multi-parameter meter, the other two ports are connected with an automatic gas inlet and outlet valve formed by a cone nozzle, steel beads and a spring. After the valve connected with an automatic gas inlet and outlet pipeline is closed, the composition and content of gas sample can be measured by opening the valve on the pipeline of the multi-parameter meter.

Description

1. Technical field [0001] The device of the invention relates to safe production in the coal industry, in particular to a simple, fast and safe gas sample collection and analysis device for goafs in underground coal mines. 2. Background technology [0002] At present, the method of collecting gas samples in goafs in underground coal mines is mainly to collect gas samples in goafs with air pumps through pre-buried bundle tubes, and then bring them to the ground for analysis. In coal mines, this not only requires the air pump to be explosion-proof, but also requires an external power supply, adding current lines and interfaces, which makes the operation very troublesome and adds a lot of safety factors; moreover, the collected gas samples must be obtained. Re-analysis on the ground will inevitably cause the escape of gas samples and the mixing of other gases, resulting in gas sample analysis errors and affecting the accuracy of gas sample analysis in goafs, thus affecting the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21F17/00
Inventor 潘荣锟余明高黄丽慧于水军董艳军贾海林周爱桃
Owner HENAN POLYTECHNIC UNIV
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