Segmental lifting conveying device for circular pipeline in deep sea mining

Abstract

The invention discloses a segmented lifting and conveying device of deep-sea mining annular pipelines. A main supporting pipe is formed by fixing at least two segments of supporting pipes through flanges. An electric hydraulic pump station, a buoyancy air cabin, a boost pump and a hopper are arranged in the main supporting pipe, and an electric power control cable is arranged in a cable groove outside the supporting pipes. The upper end and the lower end of the main supporting pipe are connected with a mining vessel lifting device and a traction steel wire. Conveying pipes are annular pipelines, the front conveying pipes and the rear conveying pipes are arranged on the supporting pipes in a surrounding mode, wherein the front conveying pipes and the rear conveying pipes are disconnected in a front-and-rear mode. The rear conveying pipe and the front conveying pipe of the uppermost segment of the supporting pipe and the lowermost segment of the supporting pipe are connected with an ore sand output pump and a flexible conveying pipe. The upper ends of the rear conveying pipes which are sequentially connected through the supporting pipes are connected with the upper end of the front conveying pipe of the front segment, and the lower ends of the rear conveying pipes are matched with the hopper. An inlet and an outlet of the boost pump are connected with the hopper and the rear conveying pipes. Due to segmented lifting and conveying, the mineral substance free fall gravitational effect is avoided. The lifting distance is longer, the hydraulic pump station reduces the weight of the device under the water and provides power for the boost pump and an all-direction propeller, the supporting pipes are prevented from being twisted and deformed, if blocking occurs, the boost pump reverses to dredge, and the segmented lifting and conveying device of the deep-sea mining annular pipelines is suitable for conveying large-particle mineral substances.

Description

technical field [0001] The invention relates to a lifting and conveying device for deep-sea mining, in particular to a segmented lifting and conveying device for deep-sea mining annular pipelines used for conveying deep-water minerals to surface mining ships, which can be widely used in deep-water manganese nodules, mud ore and many Metal ore mining and transportation field. Background technique [0002] The currently known method of pipeline transportation is to transport the minerals collected by the deep-water ore collection device to the mining ship on the water surface through its delivery pump, delivery hose, ore bin, and rigid ore lifting pipe. The pipe is transported vertically upwards, so it cannot be transported vertically upwards for a long distance, and the specific gravity of minerals is larger than that of water, and the specific gravity of various substances in the water is also different. Due to the effect of free fall, after reaching a certain height, the m...

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Problems solved by technology

[0002] The currently known method of pipeline transportation is to transport the minerals collected by the deep-water ore collection device to the mining ship on the water surface through its delivery pump, delivery hose, ore bin, and rigid ore lifting pipe. The pipe is transported vertically upwards, so it cannot be transported vertically upwards for a long distance, and the specific gravity of minerals is larger than that of water, and the specific gravity of various substances in the water is also different. Due to the effect of free fall, after reaching a certain height, the material with a heavier specific gravity will not be able to be transported upwards, causing the minerals to sink to the bottom in the rigid lifting pipe, thereby blocking the transportation pipeline, so its transportation efficiency is low and the practicability is poor. Improving transportation technology is still an international technical problem and has become a technical bottleneck in deepwater mining

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