Wind turbine with a safety system having a plurality of gas outlets

1. A wind turbine comprising:

a generator;

a system inlet;

a system outlet;

an electrolytic unit electrically powered by the generator to produce hydrogen from an input fluid, wherein the hydrogen produced can be taken out of the wind turbine by the system outlet; and

a safety system controlled by a control unit configured to evacuate the hydrogen out of the wind turbine by a plurality of gas outlets distributed on a platform of the wind turbine and configured to release the hydrogen to the atmosphere; wherein the control unit controls the flow through the gas outlets depending on whether a gas outlet is located at a windward direction or at a leeward direction with respect to the platform for avoiding that the hydrogen spreads over a region of the platform,

wherein the gas outlets comprise a funnel with an opening, the opening of the funnel being configured as an air inlet for introducing air into the electrolytic unit and enhancing an evacuation of the hydrogen.

2. The wind turbine according to claim 1 , wherein the gas outlets in the windward direction are closed and at least one of the gas outlets in the leeward direction is opened.

3. The wind turbine according to claim 1 , wherein the control unit controls the gas outlets in such a way that the funnel in the windward direction with respect to the platform act as an air inlet, further wherein the hydrogen is evacuated through at least one of the gas outlets in the leeward direction.

4. The wind turbine according to claim 1 , wherein at least one gas outlet is arranged at an upper part of a chimney.

5. The wind turbine according to claim 1 , wherein the hydrogen can be evacuated through the system outlet by a pump or by opening a system outlet valve.

6. The wind turbine according to claim 5 , wherein the safety system is configured to release an overpressure in the electrolytic unit by opening the system outlet valve or by releasing the hydrogen to the atmosphere through one of the plurality of gas outlets.

7. The wind turbine according to claim 1 , wherein the safety system comprises a fan configured to enhance a transport of the evacuated hydrogen away from the platform.

8. The wind turbine according to claim 1 , wherein the gas outlets are rotatable and configured to be aligned with a wind direction.

9. The wind turbine according to claim 1 , wherein the safety system comprises a distributor system for collecting the hydrogen.

10. A method of operating a wind turbine according to claim 1 , the method comprising:

opening at least one of the gas outlets; and

releasing the hydrogen to the atmosphere through the at least one gas outlet.

11. The method of operating a wind turbine according to claim 10 , the method comprising:

detecting a wind direction before opening at least one of the gas outlets;

leaving the gas outlets in the windward direction with respect to the platform closed; and

opening at least one of the gas outlets in the leeward direction.

12. The method of operating a wind turbine according to claim 10 , the method further comprising:

detecting the wind direction before opening at least one of the gas outlets;

opening at least one of the gas outlets comprising the funnel in the windward direction with respect to the platform in such a way that the funnel in the windward direction acts as an air inlet; and

opening at least one of the gas outlets in the leeward direction so that the hydrogen is evacuated.

13. The method of operating a wind turbine according to claim 10 , wherein the hydrogen evacuation process is triggered automatically by an approach of a vessel to the wind turbine.