Blade-root connector of ocean current energy driven generator set and connecting method thereof

Abstract

The invention provides a blade-root connector of an ocean current energy driven generator set and a connecting method thereof. The connector comprises P wing rods, a pressing plate, a tooth-shaped hub, a reinforcing part and a pressing plate screw, wherein the reinforcing part is mounted in a root of a blade, and the outside diameter of the reinforcing part is equal to the inside diameter of the blade; M through holes are circumferentially uniformly formed in the root of the blade; N mounting holes are circumferentially uniformly formed in the reinforcing part; N semi-cylindrical grooves are circumferentially uniformly formed in the tooth-shaped hub and are corresponding to the mounting holes; the P wing rods crisscross radially pass through the semi-cylindrical grooves, the through holesand the mounting hole. According to the connector and the connecting method, two wing rods, the semi-cylindrical grooves of the tooth-shaped hub and the through holes in the root of the blade are utilized to realize self-adaptive positioning, and thus the positioning in field mounting can be quickly performed, and the complex threaded hole aligning and positioning steps in traditional multi-threadconnection can be avoided; the whole mounting process is convenient and quick; and the dismounting and repairing are simple.

Description

technical field [0001] The invention belongs to the technical field of ocean current energy power generation, and in particular relates to a blade root connector of an ocean current energy generating set and a connecting method thereof. Background technique [0002] Ocean current energy is a new energy source with high energy density, no pollution, and strong sustainability. The development of ocean current energy has important and far-reaching significance for alleviating the current global energy crisis. Similar to wind power generation, ocean current power generation converts the kinetic energy of the fluid medium (sea water) into the kinetic energy of the impeller through the impeller, and then further converts it into electrical energy. Different from wind power generation, the flow medium of ocean current power generation is seawater. The density of seawater is much higher than that of air, so the load density of the impeller during operation is much higher than that o...

AI Technical Summary

Problems solved by technology

There are three main problems in this connection method: one is the need to pre-embed the bolt sleeve, which makes the entire manufacturing process complicated, and the blade mold also needs to be changed, which increases the manufacturing cost and cycle time

The precision and flatness of the bolt holes embedded in the blade root and the bolt holes distributed on the end surface of the hub must be very good, so as to cooperate with each other and meet the installation requirements, which invisibly increases the difficulty of manufacturing; the second is the embedded bolt casing The surface is a flat cylindrical surface, the cylindrical surface and the blade body are connected by shear force, the strength is relatively low, and there is a danger of being pulled out under the condition of relatively high sea current velocity and local extreme load

Third, it is difficult to locate during on-site installation

Complicated positioning and alignment takes a lot of time and manpower

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