Underwater pressure-releasing sound-reflecting baffle plate

Abstract

The invention discloses an underwater pressure-releasing sound-reflecting baffle which comprises a sound-reflecting structure, a sealing pressure-releasing structure and a limiting vibration-reducingmounting structure; the sound-reflecting structure is mounted in the sealing pressure-releasing structure through the limiting vibration-reducing mounting structure to form a sound reflection baffle plate; the sealing pressure-releasing structure comprises a displacement compensation frame, and the sound reflection baffle plate can achieve underwater pressure relief through elastic deformation ofthe displacement compensation frame. The sound reflection baffle plate is based on acoustic characteristics of a porous material; a liquid saturated open-cell foam metal is used as a main sound-reflecting functional material; a pressure release structure is packaged on the outer layer of the liquid saturated open-cell foam metal; through the position compensation structure and the liquid filled inthe position compensation structure, internal and external pressure balance can be realized, underwater pressure release of the sound reflection baffle plate under high hydrostatic pressure is further realized, and compared with the prior art, under the same high hydrostatic pressure, the weight and the thickness of the sound reflection baffle plate can be remarkably reduced, and the sound insulation effect is improved.

Description

technical field [0001] The invention relates to the technical field of underwater sound noise reduction, in particular to an anti-acoustic baffle for underwater pressure relief. Background technique [0002] In the field of underwater acoustic noise reduction, anti-acoustic baffles, as a functional material, can block the interference of noise on the sonar array and improve the detection performance of sonar equipment. At present, underwater anti-acoustic noise reduction mainly uses the principle of impedance mismatch. Due to the huge difference in characteristic impedance between air and water, underwater anti-acoustic baffles mostly use air as the main anti-acoustic functional material. Existing air material anti-acoustic baffles mainly There are air cavity type and foam type structure with small air holes. [0003] Among them, the air-cavity anti-acoustic baffle is welded with metal plates to form a structure with a cavity inside. In order to adapt to the pressure of dee...

AI Technical Summary

Problems solved by technology

[0008] In view of this, the present invention provides an anti-acoustic baffle for underwater pressure release, which can release pressure underwater, and solves the problem of increased weight and thickness of the anti-acoustic baffle in the prior art under high hydrostatic pressure. The problem of reduced sound insulation effect

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