Heli-hoist platform

Abstract

A heli-hoist platform that is an integral part of the nacelle is disclosed. A floor of the heli-hoist platform is formed by a roof of the nacelle. The floor of the heli-hoist platform may include a nonslip surface. The floor of the heli-hoist platform may include an entrance to the nacelle.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority of Chinese Patent Office application No. 201020660928.X filed Dec. 15, 2010 and to the Chinese Patent Office application No. 201120279199.8 filed Aug. 3, 2011. All of the applications are incorporated by reference herein in their entirety.FIELD OF THE INVENTION[0002]The present invention relates to a heli-hoist platform for a wind turbines.BACKGROUND OF THE INVENTION[0003]A wind turbine contains one or more Rotor blades mounted to a hub. The hub is connected to a nacelle and the nacelle is mounted on a tower. The wind turbine converts the energy of moving air to a different form of energy, mainly electric power. For this the rotor blades are formed in a way that they can transform the energy of the moving air into a rotation of the hub. The rotation of the hub is then transferred via a shaft through a gear to a generator. It is also possible, that the wind turbine is gearless and the rotation of the rotor ...

AI Technical Summary

Benefits of technology

[0012]According to an embodiment of the present invention, there is provided an heli-hoist platform for a nacelle of a wind turbine, charactered in that: platform floor, which is also the roof of the nacelle and is an integral part of the nacelle; railings, which are attached to the platform floor, in order to define the borders of the heli-hoist platform and to avoid that parts slide off the heli-hoist platform or miss the heli-hoist platform while being lowered to the heli-hoist platform.

[0013]The platform floor is covered with a non-slip surface to prevent accidents.

[0015]The platform floor is equipped with an additional support inside the nacelle to be capable of bearing more weight.

[0020]By the present invention, it becomes easier to install, less material needed, less parts needed, less weight of the nacelle.

[0021]In addition, as the upper cover of the nacelle is big enough, only a rail or wall is needed to define the borders of the heli-hoist platform and to avoid that parts slide of the platform or miss the platform while being lowered to the platform. In addition, as the roof 1 of the nacelle is covered with a non-slip surface all over the heli-hoist area, accidents can be prevented.

Problems solved by technology

An offshore wind turbine can be reached by ship, but the wave conditions might make it difficult, dangerous or impossible to approach the wind turbine and allow the service crew to enter the wind turbine.

If the weather conditions do not allow entering the wind turbine for service or repair, this leads to a loss of production of electrical energy.

A bad weather situation can occur often and last for a long time, so this might lead to situations where the wind turbine is out of order for a long time.

This leads to a lot of additional parts that are used for building the structure, additional weight, installation time to attach the structure to the nacelle, and this leads to high costs for the heli-hoist platform.

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