Installation method for composite cable of newly-built ocean platform

Abstract

The invention provides an installation method for a composite cable of a newly-built ocean platform. The installation method for the composite cable of the newly-built ocean platform comprises the following steps: before the ocean platform enters water, fixing an anchoring structure to the bottom of the ocean platform; fixing a tensioning device and a junction box to the top of the ocean platform;connecting the top end and the bottom end of the composite cable fixed with an auxiliary anode and a first reference electrode with the tensioning device and the anchoring structure separately; leading a cable core wire at the top end of the composite cable into the junction box through a branching cover fixed on the cable core wire; adjusting a tensioning force through the tensioning device so as to enable the composite cable to be in a tensioned state; and installing the ocean platform into a designated sea area; and putting the ocean platform into a fixed sea area. According to the invention, lifting lugs on main legs, and the tensioning device are adopted for tensioning the composite cable, and due to the fact that the lifting lugs are simple in structure and convenient to install, and all the work of tensioning the composite cable is completed before the ocean platform enters water, the construction steps are reduced, the offshore construction period is shortened, the construction cost is reduced, the construction difficulty is lowered, and meanwhile the construction risk is reduced.

Description

technical field [0001] The invention relates to the technical field of offshore platform engineering equipment, in particular to a method for installing a composite cable for a newly built offshore platform. Background technique [0002] In the prior art, the detection and protection of the corrosion state of the offshore platform are realized by setting a composite cable with an integrated reference electrode and an auxiliary anode, and the stretching of the composite cable usually adopts a tensioning device and a gravity foundation set on the seabed, so that the composite cable The upper end of the platform is connected to the tensioning device, and the lower end is connected to the gravity foundation. However, the hoisting and seabed positioning of the gravity foundation must be realized by large-scale equipment, and the gravity foundation is placed on the seabed after the offshore platform is launched, which increases equipment costs and While the construction is difficu...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the detection and protection of the corrosion state of the offshore platform are realized by setting a composite cable with an integrated reference electrode and an auxiliary anode, and the stretching of the composite cable usually adopts a tensioning device and a gravity foundation set on the seabed, so that the composite cable The upper end of the platform is connected to the tensioning device, and the lower end is connected to the gravity foundation. However, the hoisting and seabed positioning of the gravity foundation must be realized by large-scale equipment, and the gravity foundation is placed on the seabed after the offshore platform is launched, which increases equipment costs and While the construction is difficult, it also increases the construction period

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