ULTRASONIC PIEZOELECTRIC CONVERTER Russian patent published in 2010 - IPC H04R17/00 

FIELD: electricity.

SUBSTANCE: ultrasonic piezoelectric converter includes branch pipe (1), acoustic line from electrically conducting material (2), insulator (4) providing non-supply of voltage to piezoelectric element (5) from fault currents and voltages from operating electric equipment in pipeline with controlled medium, piezoelectric element (5), supply conductors (10), damping device from electric insulating material (6), spring (7), hollow cylindrical housing (3) and cover (8) with hole (9), which provides rigid fixation of parts.

EFFECT: providing protection against false electric signals.

1 dwg