Airflow induced vibration piezoelectric generator

Abstract

The invention relates to an airflow induced vibration piezoelectric generator, and belongs to the technical field of new energy. The airflow induced vibration piezoelectric generator is characterizedin that: front and rear frames are respectively provided with an upper beam, a lower beam, an arc-shaped plate and a cross beam, wherein the arc-shaped plate and the cross beam are connected with theupper beam and the lower beam; a concave surface of the arc-shaped plate is close to one side of the cross beam; the upper and lower beams are respectively provided with an upper pressing block and alower pressing block with arc limiting surfaces; the arc-shaped plates are provided with square grooves, and openings of the square grooves and the limiting surfaces are arranged on the same side of the cross beam; the front frame and the rear frame are connected through screws, the limiting surfaces on the front frame and the rear frame are respectively installed in a way of being opposite to theopenings of the square grooves on the arc-shaped plates, and the two arc-shaped plates form a baffle; a reed and two piezoelectric vibrators are connected between the cross beams of the front and rear frames in a compression joint manner; the free end of the reed is connected with an ear plate of a blunt body through a pressure plate and a screw, the ear plate and the pressure plate are both in T-shaped structures, the narrow ends of the ear plate and the pressure plate are arranged in the square grooves of the arc-shaped plates, and two ends of the blunt body are arranged at the inner sidesof the upper beam and the lower beam; the piezoelectric vibrator consists of a substrate and a piezoelectric sheet adhered to one side of the substrate, the substrate and the reed are wider than the piezoelectric sheet, one side of the substrate is contacted with the reed, and the root of the fixed end of the other side of the substrate is tangent to the limiting surface.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to an airflow-induced vibration piezoelectric generator, which is used for recovering the kinetic energy of airflow in a tunnel. Background technique [0002] Tunnels have become an important part of the current road and rail network. In order to ensure the normal and safe passage of cars and trains and to realize the real-time monitoring of the tunnel environment and passing vehicles, various instruments and lighting facilities need to be installed in the tunnel, so there must also be corresponding power supply facilities in the tunnel. If the traditional cable is used for power supply, the cable laying and subsequent maintenance are more difficult and costly; if the battery is used for power supply, due to the limited life of the battery, it needs to be replaced frequently, which is extremely inconvenient to use, especially in remote mountainous areas. Contents of...

AI Technical Summary

Problems solved by technology

If the traditional cable is used for power supply, the cable laying and subsequent maintenance are more difficult and costly; if the battery is used for power supply, due to the limited life of the battery, it needs to be replaced frequently, which is extremely inconvenient to use, especially in remote mountainous areas

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