A Reinforced Piezoelectric Stack Piezoelectric Energy Harvesting Device for Water Flow Pipelines

Abstract

The invention discloses a reinforced piezoelectric stack piezoelectric energy harvesting device used for water flow pipelines, and belongs to the technical field of hydroelectric power generation andlow power consumption new energy. The device consists of a corrugated pipe, a bottleneck joint, a cavity joint, a pedestal, a top cover, an aluminum film, magnet pieces, a mechanical amplification device A, a mechanical amplification device B, a piezoelectric stack and sealing rings; the two magnet pieces are arranged on the mechanical amplification device A, and the magnetism of the magnet piecesmutually repels with the other two magnet pieces arranged on the pedestal; and interference fit connection is adopted between the mechanical amplification device B and the mechanical amplification device A, and between the piezoelectric stack and the mechanical amplification device B. When water flow flows through the corrugated pipe, the pressure pulsation of the corrugated pipe can be increased, the pressure pulsation can be transmitted to the aluminum film, so that the aluminum film can be vibrated, the vibration can be transmitted to the piezoelectric stack through the mechanical amplification devices, and therefore, the piezoelectric stack can be deformed, and electric energy can be generated; energy acquisition efficiency can be enhanced by amplifying the low frequency vibration amplitude in a water flow pipeline generated by the pressure pulsation; and the device is simple in structure and easy in popularization.

Description

technical field [0001] The invention relates to a water energy capture device based on pressure pulsation, in particular to a reinforced piezoelectric stack piezoelectric energy capture device used in water flow pipelines, and belongs to the technical field of hydroelectric power generation and low-power consumption new energy. Background technique [0002] In industrial production and daily life in modern society, machines have become an indispensable part. The acquisition technology of vibration energy, heat energy and electric energy generated by the machine due to processing technology, manufacturing errors and performance requirements during the operation process has a good development prospect. In fluid pipelines, the existence of pressure pulsation is an inevitable energy loss. Pressure pulsation occurs because the pressure pump or other actuators in the fluid pipeline deviate from the optimal working condition, which causes the pressure value in the local area to fl...

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Problems solved by technology

[0005] The purpose of the present invention is that the existing water energy capture device has the technical defects of low energy conversion efficiency and unstable working environment, and proposes a reinforced piezoelectric stack piezoelectric energy capture device for water flow pipelines

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