Underwater transducer for deepwater

Abstract

The invention discloses an underwater transducer for deepwater. The underwater transducer comprises a longitudinal-vibration composite rod vibrator and a mosaic ring vibrator, wherein the longitudinal-vibration composite rod vibrator comprises a base, a screw rod and a piezoelectric ceramic plate and is used for producing vertical directivity being about 80 degrees; the screw rod is used for connecting the piezoelectric ceramic plate and an electrode plate and pressing the connected piezoelectric ceramic plate and electrode plate onto the base; and bonding faces of a piezoelectric ceramic strip and an electrode strip is coated with epoxy resin and are bonded together to from the mosaic ring vibrator, which is free of directivity in a circumferential direction. The mosaic ring vibrator is fixed on a base plate and is internally provided with a pipe for mounting of an annular mounting plate. The longitudinal-vibration composite rod vibrator is fixed on the annular mounting plate. An acoustical transmission film covers outside the longitudinal-vibration composite rod vibrator and the mosaic ring vibrator and is hermetically connected with the base plate. The interior of the transducer is filled with sonar oil and is sealed with acoustical transmission rubber, and the transducer can work normally and reliably under high depth (not smaller than 8000m).

Description

technical field [0001] The invention relates to an underwater acoustic transducer, in particular to a deep water underwater acoustic transducer. Background technique [0002] With the development of modern underwater acoustic communication technology, human beings have continuously deepened their exploration of the deep sea, such as deep-sea geological exploration, detection of underwater targets, underwater communication, etc. The manufacture and use of energy devices put forward higher requirements. The pressure of water in the deep water environment is strong. Taking the water depth of 8000 meters as an example, the water pressure is 80MPa. Existing underwater acoustic transducers usually use a titanium alloy pressure-resistant shell, and a sonar oil is poured into the sound-permeable membrane made of cold vulcanization. The processing of titanium alloy pressure-resistant shell is difficult and expensive; the scheme of cold vulcanization sound-permeable membrane is simp...

AI Technical Summary

Problems solved by technology

The processing of titanium alloy pressure-resistant shell is difficult and expensive; the scheme of cold vulcanization sound-permeable membrane is simple and easy to implement, but the material uniformity of the sound-permeable membrane made by cold vulcanization method is not good and thick, and it is subject to the release of cold vulcanization mold. Influence, the cold vulcanization mold usually adopts a split type, which causes joint lines on the inner and outer surfaces of the cold vulcanization sound-permeable membrane, these factors directly affect the sound transmission performance of the sound-permeable membrane

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