HYDROACOUSTIC BROADBAND CONVERTER Russian patent published in 2016 - IPC H04R1/44 

FIELD: acoustics.

SUBSTANCE: invention relates to hydroacoustics, particularly, to rod broadband piezoceramic transducers, intended for operation in antennae of hydroacoustic transceiving systems. Hydroacoustic transducer comprises a rod-shaped piezoceramic block of elements, rear and bending-oscillating front pad, integral reinforcement element and rod element attachment, combined with support flange, located in nodal plane composite reinforcement element, and connected with housing of antenna. Front pad is made in form of a piston with a rigid central part of a disk and elastic peripheral plate. Reinforcing element is composite and separated located in its central plane of support flange, rigidly connected with rod fastener is arranged with gap inside cylindrical part of reinforcing element made in form of shell and connected to back strap. Bottom barrel is rigidly connected via thrust flange with rod part element reinforcement attached to front pad, and in gap between rod element attachment and thin-walled cylinder is elastic element of acoustically soft materials.

EFFECT: technical result is efficient operation of piezoceramic transducers in a wide frequency band of up to one octave with non-uniformity of amplitude-frequency response of not more than 3 dB under action of high hydroacoustic pressure up to 15 MPa in air- or gas-filled version of design.

1 cl, 1 dwg