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Deep-sea piezoelectric underwater-acoustic transducer and its manufacturing method

A technology for underwater acoustic transducers and manufacturing methods, applied to piezoelectric/electrostrictive transducers, transducers for underwater use, piezoelectric/electrostrictive/magnetostrictive devices, etc., capable of solving work problems Problems such as small depth, inability to have broadband and semi-space directivity at the same time, low hydrostatic pressure resistance, etc., to achieve the effects of high hydrostatic pressure resistance, avoiding oil-filled process equipment, and high hydrostatic pressure resistance

Inactive Publication Date: 2007-11-14
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing underwater acoustic transducers have the disadvantages of low hydrostatic pressure resistance, small working depth, and inability to have broadband and half-space directivity characteristics at the same time.

Method used

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  • Deep-sea piezoelectric underwater-acoustic transducer and its manufacturing method
  • Deep-sea piezoelectric underwater-acoustic transducer and its manufacturing method
  • Deep-sea piezoelectric underwater-acoustic transducer and its manufacturing method

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Embodiment Construction

[0046] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0047] A schematic diagram of the implementation structure of a specific deep-sea piezoelectric underwater acoustic transducer of the present invention is given in FIG. 1 . It consists of piezoelectric ceramic round tube 1, upper support frame 2, lower support frame 5, sealed sound-permeable rubber oil bag 3, silicone oil 4, snap ring 6, support base 7, electrode output socket 8 (specifically as shown in Figure 3) and oil nozzle 9 (specifically as shown in Figure 1(c), Figure 5) and other components.

[0048] The piezoelectric ceramic circular tube 1 shown in Figure 2 is one of the key components of the transducer. It is a radially polarized circular tube structure made of PZT-4 piezoelectric ceramic material. The outer wall is the positive pole and the inner wall is the negative pole. Size determines the performance of the final transducer. T...

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Abstract

The transducer includes piezoelectric ceramic tube (PCT) with up supporting rack and low supporting rack being installed on two ends of the tube. The transducer is installed inside a tubular oil bag. Being fixed on the opening end of the oil bag, the base seals the oil bag. An output socket for two electrodes is set up on the base. Through connecting wires, pins of electrodes are respectively connected to inner wall and outer wall of PCT electrically. An oil hole in use for injecting oil to the oil bag is set up on the base. An oil nozzle is installed inside the oil hole. Silicone oil is filled up the oil bag. The method includes following steps: (1) enclosing integral PCT into the oil bag; (2) packaging the output socket on the base; (3) ring tightening the oil bag on the base; (4) debubbling the silicone oil, and injecting it to cavity of the transducer. Features are: wide working frequency band, high sensitivity, semi spatial directivity, and high anti hydrostatic pressure.

Description

technical field [0001] The invention belongs to deep sea ocean detection and underwater acoustic communication technology, in particular, the invention relates to a piezoelectric underwater acoustic transducer which can be used in deep sea or under high hydrostatic pressure and a manufacturing method thereof. Background technique [0002] The urgent need for the exploration and development of deep-sea marine resources has led to the rapid development of detection and delivery equipment suitable for deep-sea conditions. These equipment usually require special communication, navigation and detection sonar systems to carry out autonomous navigation and complete underwater detection operations. The underwater acoustic transducer is the key component of the sonar system. It is the main window for the sonar system to exchange information with the outside world. Its performance determines the overall performance index of the sonar system and even the entire detection equipment. For...

Claims

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Application Information

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IPC IPC(8): H04R1/44H04R17/00H01L41/113
Inventor 李俊宝解宝兴夏金东高俊琴李宗杰
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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