An improved piezoelectric cantilever beam vortex-induced vibration power generation device

A technology of vortex-induced vibration and power generation device, which is applied in the direction of piezoelectric effect/electrostriction or magnetostriction motor, generator/motor, electrical components, etc., and can solve the problem that the power generation efficiency of the generator cannot meet the mechanical energy consumption and other problems , to achieve the effect of solving insufficient power generation or unsustainable power supply, simple and clear thinking, and wide application range

Inactive Publication Date: 2019-04-16
HOHAI UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an improved piezoelectric cantilever beam vortex-induced vibration power generation device, which can effectively solve the problem that the power generation efficiency of current generators is difficult to meet the mechanical energy consumption

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  • An improved piezoelectric cantilever beam vortex-induced vibration power generation device
  • An improved piezoelectric cantilever beam vortex-induced vibration power generation device
  • An improved piezoelectric cantilever beam vortex-induced vibration power generation device

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] In view of the existing technical problems, since the vortex-induced vibration energy collection efficiency of the piezoelectric cantilever beam 2 has a great relationship with the system amplitude and vibration frequency; in the case of resonance (especially first-order natural frequency resonance), the energy collection efficiency of the system is the highest . Therefore, the present invention improves the structure of the common vortex-induced vibration generator, through the blunt body structure installed on the free end of the piezoelectric cantilever beam 2 and the interference cylinder 3 arranged on the upstream of the power generation structure, the piezoelectric cantilever beam 2 under the action of water flow The amplitude produces an amplification effect, thereby expanding the potential difference betwe...

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Abstract

The invention relates to an improved piezoelectric cantilever beam vortex-induced vibration power generation device. By an additionally-arranged interference cylinder (3), a free-end PVC bluff body and multiple rows of piezoelectric cantilever beams (2) in parallel, the power generation efficiency of the device can be effectively improved, the problem of power generation quantity insufficiency orincapability of continuous power supply is solved, the distance between the interference cylinder (3) and the piezoelectric cantilever beams (2) is adjusted according to water flow rate, and automation of the device can be achieved; and the method is simple and clear in concept, the working efficiency of the vortex-induced vibration power generator can be effectively improved, meanwhile, differentflow rate environments can be adapted by automatic control, and the vortex-induced vibration power generator is wide in application range.

Description

technical field [0001] The invention relates to an improved piezoelectric cantilever beam vortex-induced vibration power generation device, which belongs to the technical field of water flow vortex-induced vibration power generation. Background technique [0002] The phenomenon of vortex-induced vibration of blunt body structures widely exists in marine engineering, such as the vibrations generated by tension legs of offshore platforms, oil delivery risers, submarine pipelines, and marine energy harvesting devices-piezoelectric "eels" under the action of waves and currents, etc. The vortex-induced vibration phenomenon is like a double-edged sword, which can not only cause serious structural fatigue damage accidents, but also convert it into usable energy through vibration energy harvesting technology. At present, with the widespread use of micro sensors in marine hydrological monitoring and military reconnaissance, how to continuously power them has become a key issue that n...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/18
CPCH02N2/185H02N2/186
Inventor 王华坤翟秋陈奕曈潘天娇陈菁菁方科郑天宇
Owner HOHAI UNIV
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