ACOUSTIC WELL EMITTER Russian patent published in 2006 - IPC H04R1/44 

FIELD: geophysics and applied hydro-acoustics.

SUBSTANCE: emitter has active modules made in form of piezo-packets, consisting of similar piezo-ceramic washers, glued through metallic electrodes. At ends of active portion of module, metallic emitting cover plates are present. Module is compressed along axis with certain force by central compressing reinforcing pin, increasing its mechanical durability. Pin is positioned inside piezo-packet with minimal gap. Active modules are coaxially positioned in metallic body, having sound-transparent windows. Modules are acoustically decoupled from body by means of rubber decoupling parts, and by means of flexible rings, providing for rigid holding of relative positioning of modules in the body, they form a mechanically connected chain. Metallic electrodes of each module are electrically interconnected by wires. First and last flexible rings are mechanically connected to lids of body. Body is pressurized by rubber stoppers, filled with electric-isolating liquid and provided with compensator. Compensator is mechanically protected by covering cap. Between side surface of each piezo-packet and internal surface of body, acoustically soft cylinder-shaped screens are positioned, made, for example, of rigid foam plastic. Emitter is electrically connected to power source by means of power amplifier, made symmetric and provided with N-positional commutator. Electronic inputs-outputs of N piezo-packets are received at first inputs-outputs of N-positional commutator, and second input of N-positional commutator is connected to symmetric output of power amplifier.

EFFECT: higher efficiency of emitter operation, increased insonified operation volume of working environment without increasing power of emitter.

4 dwg