Submarine pipe coating clearing device

Abstract

The invention relates to a submarine pipe coating clearing device comprising a clamping mechanism, a rotating frame and high-pressure spray nozzles. The clamping mechanism is used for being clamped to the outer side of a submarine pipe and can move back and forth in the axial direction of the submarine pipe. The rotating frame is arranged on the clamping mechanism and can rotate back and forth around the outer ring of the submarine pipe. The high-pressure spray nozzles are arranged on the rotating frame and are opposite to the outer ring of the submarine pipe so that the high-pressure spray nozzles can conduct spray cutting on the coating on the outer wall face of the submarine pipe when rotating along with the rotating frame. The rotating frame of the submarine pipe coating clearing device can rotate around the outer ring of the submarine pipe, the high-pressure spray nozzles are connected with a high-pressure water pipe through a pipeline, and the high-pressure spray nozzles can conduct cutting clearing on the coating on the circumferential ring of the submarine pipe in the rotating process. Meanwhile, the high-pressure spray nozzles and the rotating frame can move in the axial direction of the submarine along with the clamping mechanism, and therefore omnibearing cutting clearing of the circumferential ring and the axial direction of the submarine pipe is achieved.

Description

technical field [0001] The invention relates to maintenance equipment for offshore oil pipelines, in particular to a coating cleaning device for marine pipelines. Background technique [0002] The submarine pipeline is an important part of the offshore oil and gas gathering and storage system. It is an offshore project with high investment and high risk. It plays an important role in the development of offshore oil and gas resources. The safe and normal operation of oil and gas fields is an important guarantee for the safe production of offshore oil and gas fields. [0003] The surface of the submarine pipeline is usually provided with a concrete covering layer and an anti-corrosion layer (FBE thermally fused epoxy resin, CTE coal tar enamel paint, etc.). Many submarine pipelines will be damaged to varying degrees under the influence of natural environmental load factors such as earthquakes and earthquakes or human factors. Therefore, there are many potential needs for sea...

AI Technical Summary

Problems solved by technology

[0004] The development of my country's submarine pipelines started relatively late compared to other countries in the world. At present, about 70% of domestic submarine pipelines have been in service for less than 10 years. As of 2015, there have been less than 20 domestic submarine pipeline maintenance projects. Sediment, tidal currents, hurricanes and other influences cause pipeline damage, and there will be more and more submarine pipeline maintenance projects in the future

When the traditional hydraulic cutting saw method is used for cutting and cleaning, the steel pipe body of the sea pipe may be cut due to the excessive feed rate of the tool, resulting in damage to the sea pipe body and even leakage accidents.

Images