Tensioning type anti-corrosion system comprising jacket and mounting method

Abstract

The invention provides a tensioning type anti-corrosion system comprising a jacket and a mounting method. The tensioning type anti-corrosion system comprises the jacket, a first composite cable, a first fixing device and a second fixing device. The first composite cable is provided with an auxiliary anode and / or a first reference electrode, one end of the first fixing device is connected with theupper end of the first composite cable, and the other end of the first fixing device is connected with a main leg of the jacket. The second fixing device is connected with the lower end of the first composite cable, and the first fixing device comprises a first rope, a second rope and first connecting pieces. The upper end of the first composite cable is connected with one end of the first rope and one end of the second rope through the first connecting pieces, and the other end of the first rope and the other end of the second rope are connected with the main leg. The upper end of the first composite cable is tensioned through the first rope, the second rope and the first connecting pieces, a traditional tensioning device is replaced, the construction steps are reduced, the offshore construction period is shortened, the construction cost is reduced, the construction difficulty is lowered, and the construction risk is reduced.

Description

technical field [0001] The invention relates to the field of anticorrosion of offshore platforms, in particular to a jacket tensioning anticorrosion system and an installation method. Background technique [0002] The existing anti-corrosion method for offshore platforms mainly adopts the auxiliary anode on the composite cable, and connects the upper end of the composite cable to the tensioning device, and connects the lower end to a larger weight. Tension to realize the stretching of the auxiliary anode; and for the freezing of the cold sea area, when the anode is stretched using the above method, when the ice layer is thick and moves, the composite cable is very easy to move in the horizontal direction. Scratched and squeezed by the ice layer, the composite cable will be damaged, or a large deflection will occur, and it will collide with and interfere with the jacket. Moreover, the manufacturing cost, installation cost and maintenance cost of the tensioning device and the ...

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Problems solved by technology

[0002] The existing anti-corrosion method for offshore platforms mainly adopts the auxiliary anode on the composite cable, and connects the upper end of the composite cable to the tensioning device, and connects the lower end to a larger weight. Tension to realize the stretching of the auxiliary anode; and for the freezing of the cold sea area, when the anode is stretched using the above method, when the ice layer is thick and moves, the composite cable is very easy to move in the horizontal direction. Scratched and squeezed by the ice layer, the composite cable will be damaged, or a large deflection will occur, and it will collide with and interfere with the jacket. Moreover, the manufacturing cost, installation cost and maintenance cost of the tensioning device and the heavy piece are extremely high, especially the heavy piece Heavy and difficult to transport

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