Encircling marine organism clearing robot used for outer surface of undersea steel structure pipeline

Abstract

The invention relates to an encircling marine organism clearing robot used for the outer surface of an undersea steel structure pipeline. The robot comprises a robot traveling unit and a movable clearing unit arranged on the robot traveling unit. The robot traveling unit comprises an upper arc-shaped fixing plate, a lower arc-shaped fixing plate, a magnetic suspension adsorption assembly, a travelling drive mechanism and a lifting mechanism, wherein the upper arc-shaped fixing plate and the lower arc-shaped fixing plate are arranged parallel to each other; and the magnetic suspension adsorption assembly, the travelling drive mechanism and the lifting mechanism are arranged between the upper arc-shaped fixing plate and the lower arc-shaped fixing plate. The movable clearing unit comprises an arc-shaped fixing support arranged on the upper arc-shaped fixing plate, an arc-shaped rack arranged on the arc-shaped fixing support, and a cavitation water jet mechanism which is movably arranged on the arc-shaped fixing support in the circumferential direction and is engaged with the arc-shaped rack. Compared with the prior art, the cavitation water jet mode is adopted for clearing marine organisms on the outer surface of the undersea steel structure pipeline, so that the clearing efficiency is high, clearing cost is low, working is stable, dismounting and mounting are convenient, safety is good, and the applied range is wide.

Description

technical field [0001] The invention belongs to the technical field of marine organism cleaning on ocean platforms, and relates to an encircling robot for cleaning marine organisms on the outer surface of an underwater steel structure pipeline. Background technique [0002] With the extensive utilization of marine resources, the number of offshore platforms in the world is increasing. Within the range of ±5m from the sea level, due to the influence of tides, the outer surface of the steel structure pipeline in the offshore platform will periodically contact air and seawater, causing many sea creatures to reproduce and grow rapidly on the outer surface of the steel structure pipeline, such as Sea oysters, barnacles, etc. These marine organisms not only increase the weight of the offshore platform, but also increase the area of ​​the offshore platform affected by the ocean current, resulting in a huge potential safety hazard. Therefore, it is necessary to regularly clean the s...

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Problems solved by technology

[0004] (1) Divers have personal safety hazards and may be in danger at any time;

[0005] (2) It is greatly affected by the weather and sea conditions, and if the weather and sea conditions change slightly, the cleaning work cannot be carried out, which makes this method have great limitations in application;

[0006] (3) The underwater steel structure pipelines of the offshore platform are arranged in a staggered manner, and the structure of the pipe rack is complex, which makes the workload of manual cleaning extremely large;

[0007] (4) When sandblasting, the protective layer on the outer surface of the pipeline will be damaged while cleaning up the marine organisms, and it must be repainted to prevent corrosion, thus increasing the follow-up workload and increasing maintenance costs;

[0008] (5) The sandblasting method will also increase the dust pollution and noise pollution on the offshore platform

In the technical solution disclosed in the above-mentioned patent, the robot for cleaning the anti-corrosion layer of the pipeline can reduce the workload of manual cleaning to a certain extent, but it needs to set two semicircular pipe bodies on the outer surface of the pipeline in advance, and connect them through pins to form a pipe. The frame body is inconvenient to install and disassemble, and it is not suitable for underwater work, and it is impossible to clean the marine organisms on the outer surface of the underwater steel structure pipeline

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