Mosaic curved disc underwater acoustic transducer

A disk and bending technology, which is applied in the field of inlaid and curved disk underwater acoustic transducers, can solve the problem of low emission response, achieve high emission voltage response, improve reliability, and simplify the structure

Active Publication Date: 2021-04-20
HARBIN ENG UNIV
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of existing curved underwater acoustic transducers, solve the problem of low emission response of curved underwater acoustic transducers, and provide an inlaid and curved disc underwater acoustic transducer. The curved transducer can achieve low-frequency emission characteristics with a small volume, and improve the transducer's emission response, reliability, and hydrostatic pressure resistance, etc.

Method used

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  • Mosaic curved disc underwater acoustic transducer
  • Mosaic curved disc underwater acoustic transducer
  • Mosaic curved disc underwater acoustic transducer

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] combine Figure 1 to Figure 3 , The mosaic bending transducer of the present invention mainly includes structures such as a metal center body 1, an insulating ceramic disc 2, and a mosaic ceramic ring 3. The inlaid and mosaic piezoelectric ceramic ring is composed of copper electrode sheets 4 and trapezoidal ceramic strips 5. Specifically, the inlaid and mosaic ceramic ring is formed by splicing tangentially polarized trapezoidal ceramic strips and copper electrodes through epoxy resin in the circumferential direction. . The wire passes through the wire hole 6 on the copper electrode 4 so that the trapezoidal piezoelectric ceramic strips 5 form a parallel structure on the circuit.

[0020] The metal cavity central body 1 is composed of two metal discs 1a and 1b made of 7075T6 aluminum alloy with a U-shaped cross section, ther...

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Abstract

The invention provides an underwater acoustic transducer with an inlaid curved disc, which includes a metal central body, an insulating ceramic sheet and an inlaid piezoelectric ceramic ring. disc, and two metal discs are arranged opposite and bonded together, a cylindrical cavity is formed between the two metal discs, there are two insulating ceramic sheets and they are respectively arranged on the outer end surfaces of the two metal discs, inlaid There are also two piezoelectric ceramic rings, which are respectively arranged on the outer end faces of the two insulating ceramic sheets. The underwater acoustic transducer of the present invention has the characteristics of low frequency, high emission voltage response, simple structure, light weight, etc., and can be applied to fields such as hanging sonar, sonobuoys, and underwater acoustic countermeasures. The invention overcomes the disadvantage of low emission voltage response of the traditional bending transducer, and adopts an inlaid piezoelectric ceramic ring as a driving element, which can improve the emission voltage response of the underwater acoustic transducer.

Description

technical field [0001] The invention relates to a transducer, in particular to an underwater acoustic transducer with inlaid curved discs, belonging to the technical field of underwater acoustic transducers. Background technique [0002] Sound waves are the only energy carriers known so far that can travel long distances in seawater. As an underwater acoustic transducer capable of emitting sound waves, it has very important application value whether it is in the civilian field, such as marine geomorphology detection, seabed resource development, etc., or in the military field, such as submarine detection, underwater acoustic communication, etc. [0003] The underwater acoustic transducer is developing towards the low frequency direction. As a curved disk underwater acoustic transducer capable of generating low frequency sound waves in a small volume, due to its low frequency, small size, and relatively simple structure, it is widely used in aerial sonar, acoustic used in na...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/44G10K9/122
Inventor 卢苇蓝宇周天放
Owner HARBIN ENG UNIV
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