Automatic jet-flow crushing tool for natural gas hydrate solid-state fluidization and mining

Abstract

The invention provides an automatic jet-flow crushing tool for natural gas hydrate solid-state fluidization and mining, and belongs to the technical field of natural gas hydrate excavation equipment.The automatic jet-flow crushing tool for natural gas hydrate solid-state fluidization and mining comprises a crushing tube, wherein the right end of the crushing tube is connected to a connecting tubethrough threads; the connecting tube communicates with the crushing tube; the upper end of the connecting tube is fixedly connected to two compression tubes; the compression tubes communicate with the connecting tube; the upper ends of the compression tubes are fixedly connected to a compression barrel; the compression barrel communicates with the two compression tubes; a first rubber plug is connected between the inner walls of the compression barrel in a sliding mode; the upper end of the first rubber plug is fixedly connected to a connecting block; the upper end of the connecting block isfixedly connected to a pressure plate; the upper end of the pressure plate is fixedly connected to three first springs; the upper end of the compression barrel is fixedly provided with a barrel cover;and the three first springs are positioned at the lower end of the barrel cover. The invention aims to solve the problems that pressure generated by jet flow in the prior art is small, crushing efficiency is low, and a crushing tool is difficult to close after crushing is accomplished.

Description

technical field [0001] The invention belongs to the technical field of natural gas hydrate mining equipment, and in particular relates to an automatic jet crushing tool for solid-state fluidized mining of natural gas hydrate. Background technique [0002] In the prior art, natural gas hydrate is an ice-like crystalline substance distributed in deep-sea sediments or permafrost in land areas, formed by natural gas and water under high-pressure and low-temperature conditions. Because it looks like ice and can burn when exposed to fire, it is also called "combustible ice" or "solid gas" and "air ice". The methane content of natural gas hydrate accounts for 80% to 99.9%. Oil and natural gas are much smaller and rich in reserves. The global reserves are enough for human use for 1,000 years, so they are regarded by various countries as an alternative energy source for future oil and natural gas. [0003] When gas hydrates are exploited, it is generally necessary to drill out the p...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an automatic jet crushing tool for natural gas hydrate solid fluidization mining, aiming to solve the problems in the prior art that the pressure generated by the jet is low, resulting in low crushing efficiency, and it is difficult to close the crushing tool after the crushing is completed

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