Submarine cable laying and protection method and guiding device for offshore wind turbine foundation

Abstract

The invention discloses a submarine cable laying and protection method and a guiding device for an offshore wind turbine foundation. The method comprises the steps that firstly, the guiding device is made on a pile leg of the wind turbine foundation, and a cable traction line passes through a guide channel on the guiding device, wherein one end of the guide channel is disposed in an appliance placement room which is arranged on a deck of the wind turbine foundation, while the other end of the guide channel stretches out of the water to be fixed on the wind turbine foundation through a tube holder; and secondly, with the use of a laying vessel or deck pulling equipment, submarine cables are laid in place by the cable traction line, and then the end portion of the guide channel detaches from the tube holder and is laid into the seabed along the submarine cable laying direction. The submarine cable laying and protection method and the guiding device for the offshore wind turbine foundation can not only effectively protect the submarine cables, but also reduce or cancel underwater robot operations or diver's underwater operations, and thus, operating efficiency for the foundation laying of the submarine cables is effectively improved, working time is reduced, and project cost is saved.

Description

technical field [0001] The invention relates to a submarine cable laying and protection method and a guiding device applied to the foundation of an offshore fan. Background technique [0002] With the development of offshore wind power, a large number of cables are needed to meet the power supply and communication requirements between wind turbines, wind turbines and booster stations, and other information platforms. Compared with land laying, the laying of submarine cables is complicated, takes a long time, and is expensive. In addition, due to the great influence of sea conditions and weather, and most of the cable laying ships are large-scale operating ships, the daily cost is extremely high. Therefore, a time-saving and labor-saving installation method not only reduces the working time of the workboat, shortens the construction period of the wind farm, but also effectively reduces risks and saves engineering costs. Traditional submarine cable laying requires the use of ...

AI Technical Summary

Problems solved by technology

When the cable is on the sea platform and the splash zone, the wave current makes the cable move and swing, and the intersection part often wears out when the cable is laid, causing the cable sheath and insulation layer to wear out gradually. In addition, the cable of the foundation of the offshore wind turbine is generally connected along the pile legs of the foundation. \Connected out, after a long time of seawater washing, there is a hollow around the pile leg, and the cable is suspended in the air. With the continuous increase of the suspension height, the continuous impact of seawater, the cable is subjected to static and dynamic tensile and shear forces, and is very easy to damage

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