HYDRO-ACOUSTIC ROD-TYPE TRANSFORMER Russian patent published in 2006 - IPC H04R1/44 H04R17/00 

FIELD: hydro-acoustics, in particular, engineering of rod-type broadband emitters, operating under high hydro-static pressures.

SUBSTANCE: piezo-ceramic rod element with two brackets is hermetically positioned in durable body and vibro-isolated from the latter by acoustic couplings. One of couplings, force-type, is made in form of separate constructive assembly, having shape of thick-walled hollow cylinder. Metallic walls of cylinder have parts, forming additional closed space, filled with rubber-like polymer, and made with possible axial displacement relatively to one another with alteration of this closed space. Durable body is made of two coaxial metallic pipes of different diameter, which at point of positioning of front bracket are connected by ring-shaped metallic flange. Ends of thick-walled hollow cylinder of force-type acoustic coupling are in contact with inner surfaces of front bracket and with aforementioned ring-shaped metallic flange.

EFFECT: reliable vibro-isolation of mechanical oscillation system of hydro-acoustic rod transformer from durable body.

3 cl, 3 dwg