Vibration balance type low-noise deep sea hydrophone and manufacturing method thereof

Abstract

The invention provides a vibration balance type low-noise deep sea hydrophone and a manufacturing method thereof. The vibration balance type low-noise deep sea hydrophone comprises a metal block, piezoelectric ceramic tubes symmetrically arranged on the two sides of the metal block, end covers, a sound transmission oil bag, a base sealed at the opening part of the sound transmission oil bag, and a watertight connector connected with the exterior of the base. An oil injection hole is further formed in the base; one end of each piezoelectric ceramic tube is vertically arranged on the metal block, the other end of each piezoelectric ceramic tube is connected with the end cover, the end cover is provided with an oil inlet hole and a wire hole, the metal block and the piezoelectric ceramic tube are both arranged in the sound transmission oil bag, the sound transmission oil bag is filled with an oily medium, and the watertight connector is connected with the positive electrode and the negative electrode of each piezoelectric ceramic tube for signal transmission. According to the hydrophone, the structural symmetry design is adopted, the acceleration counteracting principle is utilized, the influence of the external vibration transmission effect on the acceleration sensitivity and the receiving sensitivity of the hydrophone is greatly reduced, and the hydrophone has the advantages of being high in impact vibration noise resistance, high in hydrostatic pressure resistance and high in sensitivity.

Description

technical field [0001] The invention belongs to the technical field of ocean detection and sonar, in particular, the invention relates to a vibration-balanced low-noise hydrophone capable of being used under high hydrostatic pressure and a manufacturing method thereof. Background technique [0002] The urgent need for exploration and development of seabed geology and marine resources promotes the continuous development of deep-sea exploration and delivery equipment. As the main window for the sonar system to exchange information with the outside world, the performance of the underwater acoustic transducer determines the performance of the entire sonar system and even the entire detection equipment. performance indicators. In order to meet the requirements of high hydrostatic pressure conditions in the deep sea, underwater acoustic transducers usually adopt special structural designs, such as pressure relief mechanism, pressure compensation mechanism, oil-filled type, overflo...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a vibration-balanced low-noise deep-sea hydrophone and its manufacturing method, which solves the technical problems of poor anti-shock noise performance and low hydrostatic pressure resistance of existing hydrophones under dynamic use conditions , so that the anti-shock noise deep sea phone has the characteristics of high sensitivity, anti-shock noise and low cost, not only can maintain stable performance in a dynamic environment, but also can work under the special conditions of high hydrostatic pressure in the deep sea

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