Double shell slotted circular tube underwater acoustic transducer

Abstract

The invention provides a double-shell slotted round pipe underwater acoustic transducer which comprises a double-layer metal shell and an inserted-spliced piezoelectric ceramic round pipe. The double-layer metal shell comprises a double-layer section and a single-layer section in smooth connection with the double-layer section, the double-layer section is composed of an inner shell and an outer shell, a crescent cavity is formed between the inner shell and the outer shell, the thickness of the single-layer section gradually changes, a longitudinal completely-opened gap is formed at the smallest-thickness position of the single-layer section, the inserted-spliced piezoelectric ceramic round pipe is formed by bonding n PZT-4 piezoelectric ceramic strips and copper electrode slices, the piezoelectric ceramic strips are polarized in tangential direction, every two adjacent piezoelectric ceramic strips are opposite in polarization direction, and one electrode slice is arranged between everytwo adjacent piezoelectric ceramic strips. The underwater acoustic transducer has the advantages of being small in size, ultralow in frequency, high in power, simple in structure and the like and canbe applied to remote active sonar systems, ultralow frequency underwater sound experiments, seabed resource detection, marine fishing and the like.

Description

technical field [0001] The invention relates to an underwater acoustic transducer with a double-shell slotted circular tube, which belongs to the technical field of underwater acoustic transducers. Background technique [0002] Sound waves are the only energy carrier known to man so far that can be transmitted over long distances in seawater. Whether it is military operations or ocean development, sound waves are used as the medium for carrying information. As a general-purpose equipment for underwater sound generation, underwater acoustic transducers need to be improved according to the needs of the times. [0003] In recent years, with the continuous deepening of marine environmental investigation and marine resource exploration, the demand for active acoustic detection equipment with longer detection distances has become increasingly urgent. However, due to the high frequency of sound waves emitted by existing equipment, the absorption loss of seawater is large The shor...

AI Technical Summary

Problems solved by technology

The double-shell slotted circular tube transducer of the present invention solves this technical problem, so that the slotted circular tube transducer not only has the characteristics of small size and low frequency, but also has the characteristics of high power transmission

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