Equipment for preventing nodule accumulation during power failure of deep-sea mining equipment and design method

Abstract

The invention relates to the field of deep-sea mining. The invention aims to provide a design method for preventing nodule particle accumulation under the condition of emergency power failure of deep sea mining equipment and related equipment designed according to the design method so as to reduce the inconvenience of undersea operation and prolong the service life of a pump body. According to the technical scheme, the equipment for preventing nodule accumulation under the emergency power failure condition of the deep sea mining equipment is characterized by comprising a main pipe detachably connected with a lifting hard pipe and a plurality of emergency use air storage tanks evenly fixed to the periphery of the main pipe; an air outlet is formed in the emergency use air storage tank; an air outlet of the emergency use air storage tank is communicated with the main pipe through a connecting pipeline; the connecting pipeline is provided with an air inlet adjusting valve and a pressure sensor located at an outlet of the air inlet adjusting valve. A pressure monitor is further installed on the emergency use air storage tank so as to monitor the internal pressure of the emergency use air storage tank.

Description

technical field [0001] The present invention relates to the field of deep-sea mining, in particular to a design method and equipment for preventing the accumulation of nodules in hard-pipe lifting pipelines in case of emergency power failure of deep-sea mining equipment. Background technique [0002] Ocean exploration in recent decades has discovered that there are abundant mineral resources at the bottom of the ocean thousands of meters deep, with numerous types, huge reserves, and high grades, which have great prospects for development and utilization. Currently, deep-sea mineral resources with commercial development prospects mainly include polymetallic manganese nodules, cobalt-rich crusts, and hydrothermal sulfides; deep-sea ores are rich in important elements for industrial production such as manganese, cobalt, nickel, and rare earths, and their reserves are much higher than those on land reserves. If safe and efficient commercial mining can be achieved, and the impac...

AI Technical Summary

Problems solved by technology

Once a blockage occurs in the thousands of meters of transmission pipeline, it is likely to cause the overall paralysis of the transmission system

In addition, emergency power failures may occur in deep-sea mining equipment. In this case, if the ore particles in the pipeline are not discharged in time, it may cause blockage of solid particles, and these deposited solid particles will The outlet of the deep-sea hoisting slurry pump is blocked, and the hoisting system cannot be restarted when the power supply is restored. If the hoisting system is to be restarted, the blocked pipeline needs to be dismantled and cleaned, which will bring great inconvenience to underwater operations.

Existing deep-sea mining equipment is equipped with an emergency discharge valve on the pipeline, but it takes a certain amount of time to open the emergency discharge valve, and solid particles will accumulate at the outlet of the slurry pump during the opening time of the emergency discharge valve. During the period when the discharge valve is open, if the pipeline is seriously blocked, it needs to be dismantled and cleaned

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