Installation method of blades of offshore wind turbine

Abstract

The invention discloses an installation method of blades of an offshore wind turbine. The installation method comprises the following steps of: A. on the ground, pre-installing a hub and two blades on an engine room, and installing a tool fixture sleeve in an installing hole of a third blade on the hub; B. transporting to an offshore installation site; C. prearranging a lifting rope and a diggingrope on the tool fixture sleeve; D. hoisting the engine room to the top end of a tower barrel of the wind turbine; E. rotating the hub to ensure that the axis of the tool fixture sleeve is along the horizontal direction while the tool fixture sleeve is held downward by using the digging rope; F. Locking the hub; G. hooking the lifting rope on the tool fixture sleeve by using a lifting hook, dismantling the tool fixture sleeve; and H. horizontally inserting the third blade into the installing hole on the hub and fixing. In the installation method, the shorter tool fixture sleeve is arranged onthe hub so as to be capable of reducing the center of gravity during transportation and be convenient for using the digging rope to control the direction of the tool fixture sleeve so that the third blade can be horizontally arranged on the hub. The installation method has the advantages of safety, reliability, convenience for operation and low implementation cost.

Description

technical field [0001] The invention relates to a method for installing wind power generators, in particular to a method for installing blades of offshore wind power generators. Background technique [0002] At present, the installation of offshore wind turbines can be roughly divided into two methods: integral installation and split installation. The overall installation of the wind turbine is to assemble the wind turbines into a whole at the wharf base, and then transport the wind turbines from the base to the vicinity of the offshore installation platform by ship, and then install the wind turbines on On the basis of the wind turbine, this solution needs to solve the problems of fixing and crane equipment during sea transportation due to the overall weight and height of the wind turbine; split installation means that all wind turbine components will be transported by ship to the vicinity of the offshore installation platform, and then Assembling the fan components on the ...

AI Technical Summary

Problems solved by technology

This brings great difficulties to high-altitude hoisting, whether it is to pre-install the hub on the nacelle and then hoist the blades at high altitude, or to pre-install the blades on the hub and then hoist the hub at high altitude, it is difficult to control the installation angle

However, if the engine room, hub, and three blades are all pre-assembled on the ground, it is difficult to transport to the offshore installation site, because the blades of the wind turbine can be tens of meters long, and a bracket needs to be designed on the ship to raise the engine room , so that there is space for the lower blades of the fan, but this will make the center of gravity of the transported goods too high, which makes it difficult to meet the technical specifications for transportation safety and lashing, and the transformation of the transport ship is relatively large

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