A vortex-induced vibration piezoelectric generator

Abstract

The invention relates to a vortex-induced vibration piezoelectric generator, which belongs to the field of new energy. The inner sides of the longitudinal walls on the left and right sides of the frame are provided with inclined installation surfaces, and the outer ear plates on the left and right sides of the baffle are fixed on the longitudinal walls of the frame; one side of the exciter is provided with a cam composed of a bottom surface, an inclined surface and a top surface, and the other side is provided with a cam. There is a through groove, and guide holes are set on the upper and lower walls of the through groove; the left and right ends of the blunt body of the coupler are provided with inner ear plates with main and auxiliary guide holes, and the main hole and the auxiliary guide hole are respectively sleeved on the main pin and the auxiliary pin. The upper and lower ends of the main and auxiliary pins are respectively fixed on the transverse wall of the frame; the inner ear plate of the coupler press-connects the supporting spring and the buffer spring to the transverse walls on the upper and lower sides of the frame respectively; the exciter is installed on the auxiliary pin through the guide hole. The upper and lower springs are crimped between the upper and lower walls of the groove and the inner ear plate; the piezoelectric vibrator of the cantilever beam with the top block at the free end is fixed on the mounting surface of the frame; The amount of pre-bending deformation generated by the vibrator installation is half of its allowable value.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to a vortex-induced vibration piezoelectric generator, which is used to construct a self-powered river monitoring system. Background technique [0002] There are thousands of rivers all over the territory of our country. In recent years, due to inadequate treatment of industrial wastewater, soil erosion, and improper use of pesticides and fertilizers, some rivers have been polluted to a certain extent, unable to meet the needs of residents and farmland irrigation. In addition, due to the imperfect flood control facilities and lack of relevant flood control facilities for small and medium-sized rivers in some areas, there are dangers of embankment collapse or flooding when the flood season approaches, which directly threatens the lives and property safety of people along the coast. Therefore, river monitoring has been highly valued by relevant state departments; at th...

AI Technical Summary

Problems solved by technology

In recent years, due to insufficient treatment of industrial wastewater, soil erosion, and improper use of pesticides and fertilizers, some rivers have been polluted to a certain extent, unable to meet the needs of residents' lives and farmland irrigation.

In addition, due to the imperfect flood control facilities and lack of relevant flood control facilities for small and medium-sized rivers in some areas, there are dangers of embankment collapse or flooding when the flood season approaches, which directly threatens the lives and property safety of people along the coast.

Therefore, river monitoring has been highly valued by relevant state departments; at the same time, domestic experts and scholars have also proposed corresponding monitoring methods and means, including water quality monitoring technology for river water pollution, rainfall, water level and other natural disasters for flood control and mudslides. There are many monitoring technologies such as river water flow rate, as well as various micro energy harvesters that supply power to the monitoring system. However, the existing micro energy harvesters have certain problems in terms of reliability and flow rate adaptability, which seriously hampered its promotion

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