A single-impeller symmetrical large-length-to-diameter ratio ocean current power generation device

Abstract

The invention discloses a symmetric ocean current power generation device with single impeller and a high length-diameter ratio. The device adopts a single-impeller symmetric structure; two sets of transmission and power generation systems are respectively arranged at two ends of an impeller hub; the transmission and power generation systems mainly consist of guide covers, and generators and transmission gear boxes mounted in the guide covers; the two sets of transmission and power generation systems are symmetrically distributed about the impeller hub; the impeller hub is connected with the transmission gear boxes by main shafts; output ends of the transmission gear boxes are connected with the generators; impeller blades are mounted on the peripheral surfaces; and output cables of the generators of the two sets of transmission and power generation systems are connected with synchronization or load devices by electric parallel balance output devices. The device optimizes the two-way flow field characteristics, realizes the power dividing, effectively reduces the specification performance requirements on the transmission and power generation systems under the same power, decreases the design and manufacturing costs, effectively improves the stress condition of a horizontal-axle ocean current power generation device, improves the operation stability, and prolongs the service life.

Description

technical field [0001] The invention belongs to the field of new energy power generation, and in particular relates to a single-impeller symmetrical ocean current power generation device with a large length-to-diameter ratio. Background technique [0002] In the 21st century, traditional petrochemical resources are becoming increasingly exhausted, energy crisis, and environmental pollution problems have emerged, prompting people to focus their research on the development and utilization of new energy. As a clean and renewable energy, ocean current energy has the advantages of large reserves, wide distribution, strong periodicity and high energy density, and has gradually become a focus of new energy technology research and development. In the field of research and application of ocean current energy generation devices, there are traditional dams that use tidal power generation, and vertical axis ocean current energy generation devices. From the perspective of cost and energy...

AI Technical Summary

Problems solved by technology

Especially when the power of the unit rises to the megawatt level, the volume of the power generation device, especially the radial dimension, will inevitably increase, resulting in more serious problems with flow blocking and flow field characteristics, resulting in an increase in the load impact on the blades, which is very easy to occur Blade flapping and chattering problems, even bending or breaking

At the same time, when the unit rises to a high power level, the requirements for the power capacity of the transmission chain (gearbox) and the generator are also greatly increased, resulting in an increase in cost

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