Inward-concave Cymbal transducer

Abstract

The invention relates to the technical field of underwater acoustic transducers, in particular to an inward-concave Cymbal transducer. The inward-concave Cymbal transducer comprises a closed disc-shaped metal shell, piezoelectric elements are arranged in the shell, the two end faces of the disc-shaped metal shell cave inwards, the piezoelectric elements are piezoelectric drive rings, insulating layers are arranged between the piezoelectric drive rings and the side wall of the disc-shaped metal shell, the piezoelectric drive rings are connected with the insulating layers in a bonded mode, and the insulating layers are connected with the side wall of the disc-shaped metal shell in a bonded mode. The inward-concave Cymbal transducer is used for the underwater acoustic transducer technology, has high acoustic radiation efficiency, and is high in hydrostatic pressure resistance and better in performance.

Description

technical field [0001] The invention relates to the technical field of underwater acoustic transducers, in particular to a concave Cymbal transducer. Background technique [0002] In the late 1980s, the University of Pennsylvania invented the figure 1 The shown piezoelectric ceramic and metal two-phase composite Moonie transducer structure. The metal cap of the transducer with this structure can convert the small radial displacement and vibration of the piezoelectric ceramic element into much larger axial displacement and vibration at the top of the metal cap. Later, the structure was continuously improved, and the amplitude amplification effect of the transducer was significantly improved. At the beginning of this century, a relatively mature model such as figure 2 The structure of the Cymbal transducer shown. [0003] The Cymbal structure has a significant displacement amplification effect, making this structure an important research hotspot in the field of transducer...

AI Technical Summary

Problems solved by technology

However, the current research on Cymbal transducers is almost limited to receiving transducers and small-sized underwater acoustic transducers and arrays used in the medium and high frequency bands. In terms of low-frequency emitting underwater acoustic transducers, due to the influence of piezoelectric ceramic Due to the limitations of component size, adhesive bonding strength and other factors, the existing Cymbal transducers have shortcomings such as low acoustic radiation efficiency and low hydrostatic pressure resistance, and their performance still needs to be improved.

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