A tidal energy generating set and its pitch bearing

Abstract

The invention discloses a tidal energy generating set and its variable pitch bearing. The pitch variable bearing includes an inner ring, an outer ring, and a rolling body arranged between the inner ring and the outer ring, wherein: the inner ring has The ring gear of the pitch gear, the blade connecting flange is fixed on the front surface of the ring gear; the outer ring includes the front section of the outer ring and the rear section of the outer ring, and a dynamic sealing structure is arranged between the front section of the outer ring and the blade connecting flange ; The rolling elements include two rows of large rolling elements and a row of small rolling elements arranged between the two rows of large rolling elements, wherein the distance between the two rows of large rolling elements and the center of the bearing is equal, and the distance between the small rolling elements and the center of the bearing is greater than that of the large rolling elements The distance between the rolling elements and the center of the bearing. The pitch bearing of the tidal energy generating set of the present invention has smaller volume and stronger bearing capacity, and under the action of partial load, no overturning displacement will occur between the inner and outer rings of the bearing, and the tidal energy generating set adopting the variable pitch bearing has a volume Advantages of small size, low cost and good sealing performance.

Description

technical field [0001] The invention relates to the technical field of tidal energy generating sets, in particular to a tidal energy generating set and its pitch bearing. Background technique [0002] With the deepening of ocean development activities, tidal power generation technology has been widely used. The tidal energy generating set needs to adjust the opening angle direction of the blades according to the different conditions of seawater high tide and ebb tide, which requires a pitch bearing to connect the hub and blades of the tidal energy generating set. [0003] Since the working environment of the tidal energy generating set is 20 to 30 meters underwater, a bearing that can be directly exposed to seawater and has good sealing performance is the main design goal of the pitch bearing of the tidal energy generating set. [0004] At present, four-point contact ball bearings are mostly used in pitch bearings of tidal energy generating sets, and four-point contact ball...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a pitch bearing of a tidal energy generating set, which has a compact structure, small volume, strong bearing capacity, is not prone to overturning displacement, and has excellent sealing performance, thereby overcoming the existing pitch bearing of a tidal energy generating set Large volume, small bearing capacity, prone to overturning and displacement, and poor sealing performance

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