PIEZOELECTRIC RECEIVER FOR HYDROACOUSTIC EXTENDED TOWED ANTENNA Russian patent published in 2019 - IPC H04R1/44 

FIELD: antenna equipment.

SUBSTANCE: invention relates to the piezoelectric sound receivers of hydroacoustic antennae intended for recording and measuring the acoustic field in water used in hydroacoustics and geophysics. Disclosed is a hydroacoustic antenna receiver having a sensitive element made of at least one cylindrical piezoelectric cell, the inner surface of which is air-tightly screened and having sealed electric terminals, characterized in that sealing of the inner surface of the sensitive element is made by means of end covers (with a certain ratio of geometric dimensions) in the form of thin-walled cylinders conjugated with a hemisphere, provided with electrical terminals, and cylindrical part of end bushings is rigidly and tightly connected to end surface of sensitive element, inner surface of which is air-tight screened, and outer surface is sealed by outer shell by casting method. In the disclosed receiver, sealing of the inner surface of the sensitive element is achieved by end covers made in the form of thin-walled cylinders, conjugated with a hemisphere, provided with electrical terminals and made from a material having density of less than 1 g/cm³, for example from spheroplasty.

EFFECT: this makes it possible to increase stability of the declared receiver to hydrostatic pressure, to achieve minimum density, to increase manufacturability of its manufacturing and to realize possibility of axisymmetric installation (necessary for performance of requirements on vibration resistance) in the antenna.

1 cl, 1 dwg