Co-vibrating type vortex-induced vibration power generation device based on multiple vibrators

Abstract

A co-vibrating type vortex-induced vibration power generation device based on multiple vibrators comprises vibrators, supporting rods, connecting rods, linear guide rails, linear springs, a transmission rod and a linear power generator; the supporting rods are fixed at the bottom of a water flow; the linear guide rails are arranged in the middles of the supporting rods, and perform linear movement in the vertical direction; the connecting rods are used for connecting all vibrators to be a whole vibrator group; the front ends and the rear ends of the connecting rods are fixed to the linear guide rails; a linear spring for enabling the vibrators and the connecting rods to perform linear movement back and forth in whole is arranged at each of the upper end and the lower end of each linear guide rail; the middle parts of the connecting rods are fixedly connected with the transmission rods to enable the transmission rods to move along the connecting rods together; the top of the transmission rod is connected with the linear power generator. The co-vibrating type vortex-induced vibration power generation device has the advantages that a wake flow galloping effect is utilized, the generating efficiency of the vibrator group is improved, and a large number of small-capacity power generators are replaced with a small number of high-capacity power generators, so that the cost is reduced; the device has a simple structure, is easy to implement, and can be widely used in the vortex-induced vibration power generation engineering using ocean currents and tail water of a hydroelectric station.

Description

technical field [0001] The invention relates to the fields of fluid mechanics and new energy power generation, in particular to a multi-oscillator-based co-vibration vortex-induced vibration power generation device. Background technique [0002] In recent years, energy storage has become a key issue affecting the development of various countries. As a result, the development and utilization of new energy sources has become a hot topic in energy development in various countries. Among many new energy types, ocean current energy is favored by energy developers from all over the world due to its advantages such as large scale, wide distribution, and abundant reserves. According to statistics, the world's available ocean current energy is as high as 5×10 6 MW. In my country, the theoretical exploitable volume of coastal current alone can reach 1.4×10 5 MW is equivalent to the installed capacity of 70 Three Gorges hydropower stations, which shows its huge reserves. In additi...

AI Technical Summary

Problems solved by technology

However, the VIVACE device has significant defects: the VIVACE vortex-induced vibration power generation device uses a single vibrator to vibrate to generate power, and the vibrators are independent of each other, so each vibrator must be equipped with a set of transmission, power generation, power transmission and frequency conversion equipment; at the same time, due to poor vibration consistency , leading to high cost of frequency conversion, which is not conducive to Internet circulation

According to the existing research results, for low-speed water flow (flow rate not exceeding 2m / s), the diameter of VIVACE's vibrator should not exceed 10cm, and the length should not exceed 1m, so the maximum theoretical power generated by one vibrator is only 90W

Then, for a 360MW power plant, it needs to be equipped with transmission, power generation and frequency conversion equipment to reach 4×10 6 It is obviously not economical or practical to manufacture so many generators in actual engineering

It can be seen that the above defects greatly reduce the engineering economy and practicability of the VIVACE vortex-induced vibration power generation device

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