A co-vibration vortex-induced vibration power generation device based on multi-vibrator

Abstract

A multi-oscillator-based co-vibration vortex-induced vibration power generation device, including a vibrator, a support rod, a connecting rod, a linear guide rail, a linear spring, a transmission rod and a linear generator, supported and fixed at the bottom of the water flow, and a linear guide rail is provided in the middle of the support rod , the linear guide rail moves linearly in the vertical direction; the connecting rod connects all the vibrators to form a whole vibrator group, the front and rear ends of the connecting rod are fixed with the linear guide rail, and the upper and lower ends of the linear guide rail are respectively provided with linear springs to make the vibrator and the connecting rod move up and down as a whole Reciprocating linear movement, the middle part of the connecting rod is fixedly connected with the transmission rod so that the transmission rod can move together with the connecting rod; the top of the transmission rod is connected with the linear generator. The invention has the advantages that: the device utilizes the galloping effect of the wake to improve the power generation efficiency of the vibrator group; a few large-capacity generators are used to replace most small-capacity generators, which reduces the cost; the device has a simple structure and is easy to implement. It can be widely used in vortex-induced vibration power generation projects of ocean currents and tail water of hydropower stations.

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

Images