Flux tube device and flux tube conveying device for underground coal gasification

Abstract

The invention discloses a bundled pipe device and a bundled pipe conveying device for underground coal gasification. The bundled pipe device includes at least two continuous pipes and a fixing piece. A plurality of continuous pipes are connected in parallel to the fixed pipe. On the component, the axes of the continuous tubes are arranged in parallel, and there is a predetermined gap between the outer walls of any two adjacent continuous tubes. In the bundled tube device and bundled tube conveying device for underground coal gasification provided by the present invention, a plurality of coiled tubes are arranged side by side with a predetermined gap between them, so that when different coiled tubes deform with different amplitudes, the Even eliminate the impact on other coiled tubing, thereby reducing or even eliminating the negative impact on normal operation.

Description

technical field [0001] The invention relates to underground coal mining technology, in particular to a bundle tube device and a bundle tube conveying device for underground coal gasification. Background technique [0002] Underground coal gasification technology is a technology that injects gasification agent directly into the original underground coal seam for thermochemical conversion reaction to produce coal gas or synthesis gas. In order to complete the underground coal gasification, it is necessary to drill a series of boreholes connecting the surface and the coal seam, or to drill boreholes in the coal seam, such as inlet boreholes, gas outlet boreholes and gasification channels. It is necessary to transport different types of substances through drilling, or install a series of equipment, such as transporting different types of gasification agents: air-oxygen, oxygen-carbon dioxide, oxygen-water vapor, oxygen-nitrogen, oxygen-water, etc., installation Different equipm...

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Problems solved by technology

[0004] The disadvantage of the existing technology is that in the process of use, due to the different factors such as the properties, pipe diameters and stress conditions of multiple pipes, the bending and tensile loads on different pipes will be different, so that The deformation range of different pipes is different, which causes the inner pipe to wear the outer pipe, which affects the fluid transportation, or the pipe with large deformation forces the parallel pipe with small deformation to tear, all of which have a negative impact on the normal operation of the pipe

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