| 摘要 |
The invention relates to a control box for arranging in a rotor hub of a wind turbine that can be rotated about a rotational axis. Such control boxes receive electrical components such as relays, inverters, sensors and the like, in the inner region thereof, which is defined by a wall, said components being required for the control of sheet displacement systems, also called pitch systems. Spurious particles can find their way into the control box during maintenance or even via air inlets and outlets. Especially dangerous parts are electro-conductive spurious parts that can trigger a short circuit (wires, cable parts, washers, screws etc.) and mechanically relevant bodies that can block ventilators, for example. Wind turbines are also known from prior art, wherein magnets are provided in the control boxes in the rotor hub, and ferro-magnetic spurious particles can thereby be fixed inside the control box. The aim of the invention is to provide a control box for a wind turbine, wherein the fault tolerance of the control box is increased. To this end, according to the features of claim 1, the catching device in the control box has a cavity for receiving spurious particles and an opening for the entrance of spurious particles into the cavity. This causes the spurious particles to be collected by the catching device only by means of gravity and the rotation of the rotor hub. Furthermore, the cavity ensures that the spurious particles caught are held in the catching device.
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