Method for noise reduction of working environment of underwater detection device

Abstract

The invention discloses a method for noise reduction of a working environment of an underwater detection device. The method comprises the following steps of analyzing noise spectrums generated in a bulbous bow flow guide cover by using a noise source spectrum characteristic analysis device; determining noise influences of noises on the interior of the bulbous bow flow guide cover according to thedivided noise values; comparing the noise influences generated in the bulbous bow flow guide cover with the maximum noise influence value which can be borne by the underwater detection device; and selecting and reasonably arranging a sound insulation baffle and a sound absorption baffle according to a comparison result. According to the method, three-dimensional modeling and acoustic simulation analysis are carried out on the bulbous bow flow guide cover for mounting the underwater detection device, and different noise reduction processing is selected according to noise characteristics and values, so that the noise reduction effect can be improved; and the noise influences generated in the bulbous bow flow guide cover are compared with the maximum noise influence value which can be borne by the underwater detection device, and arrangement and noise reduction measures are reasonably selected for the bulbous bow flow guide cover according to the comparison result, so that the noise reduction effect is high in stability.

Description

technical field [0001] The invention relates to the technical field of noise reduction, in particular to a method for reducing noise in the working environment of underwater detection equipment. Background technique [0002] The bulbous bow dome 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 flow noise from the front of the bulbous bow dome, the stern The propeller noise and mechanical equipment vibration noise both interfere with the normal operation of the underwater acoustic detection equipment. [0003] At present, the acoustic baffle is gradually applied to the bulbous bow dome as a noise reduction structure to reduce the water-borne noise from the stern generated by propellers and mechanical equipment. The structural design of the acoustic baffle mainly focuses on metal and In terms of low-density foam materials, the overall performa...

AI Technical Summary

Problems solved by technology

[0003] At present, the acoustic baffle is gradually applied to the bulbous bow dome as a noise reduction structure to reduce the water-borne noise from the stern generated by propellers and mechanical equipment. The structural design of the acoustic baffle mainly focuses on metal and In terms of low-density foam materials, the overall performance of the sound baffle is rarely considered from the perspective of improving the sound field environment in the bulbous bow dome. When performing noise reduction processing on underwater detection equipment, traditional methods rarely have the effect of different frequency spectrums. Targeted noise reduction processing is often carried out in a unified manner. In fact, the noise spectrum received by underwater detection equipment in all directions in the bulbous bow dome is different, so a unified method is adopted. The effect of noise reduction processing is not good, therefore, the present invention proposes a method for noise reduction in the working environment of underwater detection equipment to solve the deficiencies in the prior art