Wave energy capturing and wave absorbing integrated device based on Helmholtz resonance principle

By using an integrated wave energy capture and suppression device based on the Helmholtz resonance principle, and utilizing a three-stage air chamber and an adjustable Helmholtz resonant cavity, the problem of low wave suppression efficiency for long-period waves in traditional devices is solved, achieving high-efficiency wave suppression and energy capture over a wide frequency band.

CN121138201APending Publication Date: 2025-12-16DALIAN UNIV OF TECH
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Patent Information

Application Number
CN202511379020.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-25
Publication Date
2025-12-16

AI Technical Summary

Technical Problem

Traditional floating breakwaters and oscillating water column devices have low wave dissipation and energy conversion efficiency and narrow bandwidth when dealing with long-period waves, making them difficult to adapt to complex and ever-changing sea conditions.

Method used

An integrated wave energy capture and suppression device based on the Helmholtz resonance principle is adopted. Through a three-stage series air chamber structure and an adjustable Helmholtz resonant cavity design, combined with a one-way valve group and an air turbine power generation system, it achieves efficient reduction and energy capture of long waves.

Benefits of technology

It significantly broadens the wave-damping frequency band, improves the wave-damping performance for long-period waves, enhances energy conversion efficiency and output stability, and avoids increasing structural size and cost.

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Abstract

The wave energy capturing and wave absorbing integrated device based on the Helmholtz resonance principle comprises a dike body, the dike body is sequentially provided with a front baffle, a front air chamber, a middle air chamber, a rear air chamber and a rear baffle in the wave incidence direction, and a three-stage series type wave absorbing structure is jointly formed; a front gas-guide tube and a rear gas-guide tube are respectively arranged at the tops of the front gas chamber and the rear gas chamber, and the front gas-guide tube, a top gas cavity of the middle gas chamber and the rear gas-guide tube are respectively connected with a confluence header pipe through pipelines; a one-way air inlet valve and a one-way exhaust valve are arranged on the top of each air chamber and each air guide pipeline; the air outlet end of the confluence header pipe is connected with a one-way air turbine. On the premise that the physical size of the structure and the construction cost are not remarkably increased, the wave absorbing frequency band can be effectively widened, particularly the wave absorbing performance on long-period waves is remarkably improved, and therefore the defects of a traditional breakwater and a traditional OWC device in the aspects are overcome.
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