Acoustic baffle composite structure for underwater detection equipment

Abstract

The invention discloses an acoustic baffle composite structure for underwater detection equipment. The acoustic baffle composite structure comprises an acoustic baffle body, the acoustic baffle body comprises a cavity steel plate, a damping layer and a sound absorption layer, the cavity steel plate is of a main body supporting structure, the sound absorption layer and the damping layer are both pasted to the two sides of the cavity steel plate through mucilage glue, the cavity steel plate is formed by overlapping cavity steel plate units through flanges, each cavity steel plate unit is formedby welding a vertical face, a flange face and a bottom plate, a cavity is formed in each cavity steel plate unit, the damping layer is made of polyurethane underwater acoustic damping materials, and the sound absorption layer is of a wedge structure. According to the acoustic baffle composite structure for the underwater detection equipment in the invention, the cavity steel plate is adopted as asound insulation structure, propeller noise, mechanical noise and hull vibration radiation sound from the stern are reflected through an impedance mismatch effect, the reflection sound insulation effect is achieved, the influence of the noise on the underwater detection equipment is reduced, and therefore the detection performance of the equipment is improved.

Description

technical field [0001] The invention relates to the technical field of equipment, in particular to a composite structure of an acoustic baffle for underwater detection equipment. Background technique [0002] The bulbous bow of modern large and medium-sized ships is mostly equipped with underwater detection equipment, and its performance is affected by the acoustic environment in the bulbous bow dome. The vibration and noise of the equipment interfere with the normal operation of the underwater acoustic detection equipment. At present, the acoustic baffle is gradually applied to the bulbous bow dome as a noise reduction structure to reduce the water load generated by the propeller and mechanical equipment from the stern. Noise, the structural design of the sound baffle mainly focuses on metal and low-density foam materials, and rarely considers the comprehensive performance of the sound baffle from the perspective of improving the sound field environment in the bulbous bow d...

AI Technical Summary

Problems solved by technology

[0002] The bulbous bow of modern large and medium-sized ships is mostly equipped with underwater detection equipment, and its performance is affected by the acoustic environment in the bulbous bow dome. The vibration and noise of the equipment interfere with the normal operation of the underwater acoustic detection equipment. At present, the acoustic baffle is gradually applied to the bulbous bow dome as a noise reduction structure to reduce the water load generated by the propeller and mechanical equipment from the stern. Noise, the structural design of the sound baffle mainly focuses on metal and low-density foam materials, and rarely considers the comprehensive performance of the sound baffle from the perspective of improving the sound field environment in the bulbous bow dome. Therefore, the present invention proposes a Acoustic baffle composite structure for underwater detection equipment to solve the problems existing in the prior art

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