Array truncated conical shell bubble curtain underwater piling noise reduction device

Abstract

The invention belongs to the field of marine engineering vibration and noise, and provides an array truncated conical shell bubble curtain underwater piling noise reduction device, which includes a truncated conical shell, inner and outer ring pipes containing air holes, inner and outer standpipes, and an external air compressor , the truncated conical shell is connected with the inner and outer ring pipes through hooks, the inner and outer ring pipes are fixedly connected with the inner and outer vertical pipes through threaded four-way pipes, and the external air compressor is located in the whole The top of the structure is connected to the uppermost ends of the inner and outer vertical pipes through flexible pipes. The device of the present invention guides the propagation of sound waves obliquely through the conical shell in the low frequency band, effectively directional radiates sound waves with longer wavelengths, utilizes the irregularity of sea surface waves, and increases the sound wave propagation path to transmit and consume sound energy to the sea surface of the far sea; In the mid-to-high frequency band, the double-layer bubble curtain produced by the air holes along the inner and outer sides of the conical shell performs resonance absorption and diffuse scattering, effectively reducing noise pollution.

Description

technical field [0001] The invention belongs to the field of marine engineering vibration and noise, and relates to full-frequency noise control of underwater piling, in particular to an array truncated conical shell bubble curtain underwater piling noise reduction device. Background technique [0002] With the development and utilization of marine energy, marine engineering represented by underwater piling has brought huge economic benefits, but it has also caused environmental problems. Underwater piling will radiate a transient high-intensity broadband pulse signal, and its main radiation path is that the sound wave is generated from the pile body and transmitted to the sound receiving point through the water medium. The noise of underwater piling will mask the acoustic signals of marine mammals, fish and other organisms near the construction or even in the open sea, causing hearing loss (TTS or PTS), affecting their social and reproductive behaviors, and destroying the e...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the noise problem in the underwater piling process and the prior art, the present invention proposes an array truncated conical shell air bubble curtain underwater piling noise reduction device, which guides the sound wave propagation obliquely through the conical shell in the low frequency band, effectively for longer wavelengths Directional radiation of sound waves, using the irregularity of sea surface waves, and increasing the sound wave propagation path, to transmit and consume sound energy to the far sea surface; in the middle and high frequency bands, through the double-layer bubble curtain generated inside and outside the conical shell along the pores of the ring pipe, Resonant absorption and diffuse scattering, effectively reducing noise pollution

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