Guiding centralizer mechanism for single-pile foundation of offshore wind turbine

Abstract

The invention provides a guiding centralizer mechanism for a single-pile foundation of an offshore wind turbine. The guiding centralizer mechanism comprises a frame, a clamping and guiding mechanism, a horizontal adjusting mechanism and a vertical adjusting mechanism, wherein the frame is fixed onto a workboat, the horizontal adjusting mechanism and the vertical adjusting mechanism are arranged on the frame, and the clamping and guiding mechanism is connected with the vertical adjusting mechanism. The guiding centralizer mechanism is driven and controlled by a hydraulic cylinder and functions in clamping, guiding and centralizing the single-pile foundation of the offshore wind turbine, the pile foundation can be vertically piled into a seabed by a pile hammer during piling and prevented from deflecting during piling, normal running of the wind turbine is ensured, and wind generation efficiency is improved.

Description

technical field [0001] The invention relates to installation equipment for offshore wind farms, in particular to a guiding and straightening mechanism for single pile foundations of offshore wind turbines. Background technique [0002] After the oil crisis in the 1970s, a new era of wind energy utilization began. On land with good geographical location, the development of wind energy has a certain economic value, and people have found that the economics of developing wind power generation is also quite good at another frontier: offshore wind energy. Many countries in the world have begun to formulate plans to consider the development of offshore wind farms, and some have already put them into practice. The wind speed of offshore wind farms is higher than that of land wind farms, and offshore wind resources are abundant, so it is necessary to develop and design offshore wind turbine installation equipment suitable for the characteristics of sea areas. [0003] At present, o...

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Problems solved by technology

[0004] The possible reasons for the inclination of the offshore wind turbine foundation during the process of driving into the seabed are as follows. First, it is affected by the deflection moment or eccentric load from the piling hammer. When the pile cap of the piling hammer and the pile top of the pile foundation When the contact is dislocated, eccentric load or deflection moment will be generated; second, when the pile foundation encounters a hard object, such as pebbles, when it is driven into the seabed, the pile foundation will also deflect; Force, such as the horizontal force or torque caused by waves, tides or currents, etc., will cause the pile foundation to deflect. Of course, as the pile foundation continues to be driven into the seabed, the frictional thrust generated by the soil will also increase. , the probability of deflection of the pile foundation will also be reduced, and the role of the righting and guiding mechanism will not be so obvious at this time. However, the righting and guiding mechanism is still very necessary in the initial stage of piling. On the one hand, it provides the necessary Because the length of the single pile foundation is generally about 5 meters, which is relatively long, the maximum diameter can reach 6.5 meters, and the weight is generally more than 150 tons, which is relatively heavy. Even if the pile foundation is inserted into the seabed under the action of its own weight, this The friction force provided by the deep soil is not enough to ensure that the pile foundation moves downward along the vertical direction; The adjustment structure of the guiding mechanism can achieve the purpose of correcting the deviation

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