Wind generating set and method for shielding gap thereof

Abstract

The invention provides a method for shielding a gap of a wind generating set. The gap is arranged at a joint of a first part that air flow passes through firstly and a second part that the air flow passes through sequentially; a flow guiding part is arranged at a position on the first part, near the gap and in the upwind direction of the gap; the glow guiding part extends along a direction approximately vertical to the joint of the first part and the second part and at least shields the part of the gap, which is in the windward direction. The invention also provides a wind generating set with the method. The method for shielding the gap of the wind generating set provided by the invention can be used for effectively preventing outside impurities from entering inside the wind generating set through the gap under the action of local high-pressure fluid, and thus, internal equipment of the wind generating set is effectively protected, and the method is simple and feasible and lower in cost.

Description

technical field [0001] The invention relates to wind power generation technology, in particular to a method for shielding a gap of a wind power generating set and a wind generating set applying the method. Background technique [0002] Wind turbines are usually installed in areas with abundant wind resources, but these areas usually have harsh environments, such as areas with a lot of rain, sand, or salt spray. Since there are many gaps in the wind turbine, especially the rotating connection parts, such as: the joint between the blade and the spinner, the joint between the spinner and the generator or the joint between the spinner and the nacelle, the tower and the nacelle At the junction, if the air containing impurities enters the inside of the wind turbine through the above-mentioned gap, it will cause damage to the equipment inside the wind turbine. In order to prevent the air containing impurities from entering the inside of the generator through the above-mentioned ga...

AI Technical Summary

Problems solved by technology

Although these methods can play a certain sealing role, each method has its own shortcomings, making it not suitable for sealing the gaps of wind turbines.

For example, simply reducing the size of the gap not only has a poor sealing effect, but also increases the manufacturing accuracy and difficulty of each component of the wind turbine; the use of a mechanical labyrinth design not only increases the difficulty of the processing process, but also increases the manufacturing cost; while using Although the rubber dynamic sealing structure can reduce the intrusion of dust and salt mist to a certain extent, as the fan running time accumulates, the dynamic sealing effect will become worse and worse due to wear and tear.

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