A water flow induced vibration energy harvester

Abstract

The present invention relates to a water flow-induced vibration energy accumulator and belongs to the technical field of electric power generation. An end part of a side wall of a shell body is provided with an end cap, a wire coil is embedded inside a bottom wall, upper and lower ear plates are arranged on an outer side of the bottom wall, and a long pin is fixed on the upper and lower ear plates; a flow disturbing body consists of a column body, a boss and a side plate; the side plate sleeves the long pin, and two pressure springs sleeving the long pin are pressed on upper and lower sides of the side plate; a magnetic strip is mounted on the boss, the magnetic strip is installed near a bottom wall of the shell body; a frame is provided with a frame bottom plate as well as inner and outer ears plates, the bottom plate of the frame is mounted on the end cap, a rocker arm of an exciter is provided with a rocker ear plate and a cam, a magnetic block is mounted on the rocker arm, the rocker arm sleeves a rotary shaft, two ends of the rotary shaft are fixed on the outer ear plate, pin shafts are mounted on the inner ear plate and the ear plate of the rocker arm, two ends of a tension spring are connected onto the pin shaft, energy transducers are mounted on an upper side and a lower side the frame bottom plate, each energy transducer is formed by bonding a substrate and a piezoelectric membrane, end parts of the energy transducers are butted against a vertex of the cam, a cam contour curve comprises two arc contours that are concentric with an axle hole, and the energy transducers are of a flat and straight structure before installation.

Description

technical field [0001] The invention belongs to the technical field of power generation, and in particular relates to a water flow-induced vibration energy harvester for powering a river monitoring system. Background technique [0002] There are thousands of rivers all over the territory of our country. In recent years, due to insufficient treatment of industrial wastewater, soil erosion, and improper use of pesticides and fertilizers, most rivers have been polluted to a certain extent. Nearly 1 / 4 of the rivers or river sections cannot meet basic irrigation due to pollution. need. In addition, because the current flood control facilities for small and medium-sized rivers in many areas are not perfect, or even do not have any flood control facilities, when the flood season comes, it may cause dangers such as embankment failure or flooding, directly threatening the lives and property safety of people along the coast. Therefore, river monitoring has been highly valued by rele...

AI Technical Summary

Problems solved by technology

Although some of the monitoring methods proposed at present are relatively mature in technology, they have not been popularized and applied in a large area. One of the main reasons is that the power supply problem of the monitoring system has not been well resolved.

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