Ice breaking rotor unit, offshore foundation and offshore wind generating set

Abstract

The invention relates to an ice breaking rotor unit, an offshore foundation and an offshore wind generating set. The ice breaking rotor unit comprises an ice breaking rotor unit body (1), the ice breaking rotor unit body (1) comprises ice breaking rotor supports (11) fixed to the outer wall of the foundation, and a rotatable active ice breaking rotor (12) is mounted between the breaking rotor supports (11). When a whole ice block move to the ice breaking rotor unit body (1), the ice breaking rotor (12) is driven by motion of the ice block and actively rotates without additional power driving,continuous ice breaking is carried out, and the breakage rate is high.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to an ice-breaking rotor unit, a foundation and an offshore wind power generating set. Background technique [0002] With the rapid development of offshore wind power generation, high-latitude cold sea areas have attracted more and more attention because of their high wind energy density. The foundation of offshore wind turbines is generally several kilometers to tens of kilometers away from the land. If the wind turbines are installed in the northern seas, the floating ice on the sea surface will impact and impact the foundations of offshore wind turbines during the winter freezing period in the north. The basic structure of the wind turbine is damaged. When the ice floe hits the foundation and the ice floe itself breaks and breaks, new periodic shock vibrations will be generated. Long-term vibration will cause fatigue. When the periodic shock of ice shattering and offshore wind...

AI Technical Summary

Problems solved by technology

The foundation of offshore wind turbines is generally several kilometers to tens of kilometers away from the land. If the wind turbines are installed in the northern seas, the floating ice on the sea surface will impact and impact the foundations of offshore wind turbines during the winter freezing period in the north. The basic structure of the wind turbine is damaged. When the ice floe hits the foundation and the ice floe itself breaks and breaks, new periodic shock vibrations will be generated. Long-term vibration will cause fatigue. When the periodic shock of ice shattering and offshore wind power generation When the frequencies of the foundation of the unit and the tower itself overlap, periodic resonance will occur, which is very unfavorable to the safety of offshore wind turbines

[0003] The existing anti-ice-breaking device is generally called anti-ice cone, which is a spindle structure, similar to the docking of two conical objects. It also uses the movement of the ice itself, and the ice cubes move along the upper cone surface or the lower cone surface, and the ice cubes are squeezed. The disadvantage of this structure is that it is heavy after crushing. The anti-ice cone installed on a steel pile of about 5 meters weighs nearly 100 tons.

Moreover, the ice-breaking device of this structure is also a passive ice-breaking device. The ice block is only hit once. It is possible that the ice block is not completely broken, but only moves up or down. The ice-breaking effect is not very good, and it will still hit the foundation. Cause the foundation to resonate, generate fatigue load on the foundation, and seriously cause the foundation to break and collapse

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