Coalbed methane sampling device for coalbed methane comprehensive exploration

Abstract

The invention relates to the technical field of coalbed methane sampling, and discloses a coalbed methane sampling device for coalbed methane comprehensive exploration. The coalbed methane sampling device comprises a fixed protective cover, a control system and a mobile power supply, wherein a plurality of gas holes are formed in the fixed protective cover; a gas extractor is fixedly arranged in the fixed protective cover; the gas extractor comprises an gas extracting tank; a sealing cover is arranged on an opening in the upper end of the gas extracting tank; an gas inlet nozzle is arranged atthe lower end of the exhaust tank; a gas inlet valve is arranged on the gas inlet nozzle, a piston is arranged in the gas extracting tank, and the upper end of the piston rod sequentially penetratesthrough the sealing cover and the top part of the fixed protective cover to be fixedly connected with the telescopic end of the electric telescopic rod; and the fixed end of the electric telescopic rod is fixed on the bracket, the fixed protective cover is fixedly connected with the bracket through a plurality of first connecting rods, and the electric telescopic rod and the gas inlet valve are respectively connected with the control system through electric signals. The coalbed methane sampling device for coalbed methane comprehensive exploration has the advantages that coalbed methane can beautomatically extracted and discharged by the coalbed methane sampling device, accordingly, the coalbed methane can be conveniently sampled and analyzed, and the coalbed methane sampling device is convenient to use.

Description

technical field [0001] The invention relates to the technical field of coal bed gas sampling, in particular to a coal bed gas sampling device for comprehensive exploration of coal bed gas. Background technique [0002] Coalbed methane refers to the hydrocarbon gas stored in coal seams with methane as the main component, mainly adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water. It is an associated mineral resource of coal and belongs to unconventional Natural gas is a clean, high-quality energy and chemical raw material that has risen internationally in the past ten or twenty years. The calorific value is 2-5 times that of common coal. The calorific value of 1 cubic meter of pure coalbed methane is equivalent to 1.13kg of gasoline and 1.21kg of standard coal. Its calorific value is equivalent to that of natural gas. , almost does not produce any waste gas, it is a good fuel for industry, chemical industry, powe...

AI Technical Summary

Problems solved by technology

[0003] Before coalbed methane mining, it is necessary to sample and analyze coalbed methane. The existing sampling devices are basically used to store coalbed methane, and cannot automatically extract and discharge coalbed methane, which is inconvenient to use.

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