Central water tube gasifying and coal mining device

Abstract

The invention discloses a central water tube gasifying and coal mining device. The central water tube gasifying and coal mining device comprises an outer ring subassembly and an inner ring subassembly, wherein the outer ring subassembly comprises an upper joint, a sealing ring, an upper outer barrel, a lower outer barrel and a shower nozzle; a pressing ring groove is formed in the upper end of the upper joint; a fixing screw is arranged in the middle of the upper joint; a swivel nut is arranged at the lower end of the upper joint; the bottom of the upper joint and the sealing ring are positioned in a welded manner; the upper outer barrel is in the shape of a hollow cylinder; the upper end of the upper outer barrel is in threaded connection with the swivel nut; a valve mechanism is arranged on the bottom of the upper outer barrel; the lower outer barrel is in the shape of a hollow cylinder; the upper end of the lower outer barrel is connected with the lower end of the upper outer barrel; the lower end of the lower outer barrel is connected with the shower nozzle; the inner ring subassembly comprises a water delivery tube, a cutting sleeve straight-through terminal joint, a middle water tube and an atomizing nozzle; hose clamps are arranged on the water delivery tube pairwise; a fixing screw is inserted in the hose clamps arranged pairwise, and is used for limiting axial movement of the water delivery tube; and a plurality of helical blades which are used for producing circles on delivered oxygen are uniformly distributed on the outer surface of the middle water tube in the peripheral direction. The central water tube gasifying and coal mining device has the advantages of simple structure, high temperature resistance, oxidation resistance, long descent continuous working period and the like.

Description

technical field [0001] The invention belongs to the technical field of coal mining operations in coalfield deposits, and more specifically relates to a central water pipe gasification coal mining device. Background technique [0002] Water gas is a low-carbon clean energy, and its demand is increasing. Gasification coal mining technology includes conventional gasification coal mining technology and underground gasification coal mining technology. Conventional gasification coal mining technology is to collect and transport underground coal resources to the ground for gasification treatment through the conventional mining tunnel operation method to form water gas; underground gasification coal mining method is to directly extract underground coal deposits, Ignite and burn, and supply oxygen and water to the coal seam through the ground to generate water gas underground, and finally collect the generated water gas to form industrial products for use, while the coal ash and slag...

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Problems solved by technology

[0004] However, further research shows that the above-mentioned prior art still has the following defects or deficiencies: firstly, the tool described in the above-mentioned technology is connected with the coiled pipe by welding, the tool cannot be reused, and the pipe wall is thinner, and the welding process is more difficult. complex; secondly, the airflow and water flow in the tool do not have the function of creating swirl and atomization, and the gas-liquid two-phase mixing is uneven, which affects the generation efficiency of water gas; thirdly, the tool described in this technology does not have an anti-tempering device, and in the underground coal seam When working in the middle, when the oxygen is stopped, it is easy to cause backfire and burn out the tools

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