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Transmitting-receiving underwater transducer

An underwater acoustic transducer, transceiver-type technology, applied in the direction of sound-generating devices, instruments, etc., can solve problems affecting the accuracy of flow measurement, failure of measurement products, degumming of bonding surfaces, etc., achieve good sound absorption effect, and improve signal conversion capability and the effect of output signal stability

Inactive Publication Date: 2012-10-03
唐山济邦节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing ultrasonic transducers for flow detection use PZT material, and the backing is air backing, which has strong transmitting ability but unstable receiving performance, which directly affects the accuracy of flow measurement. Epoxy resin adhesive bonding, long-term use will lead to degumming of the bonding surface, making the metering product invalid

Method used

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Embodiment Construction

[0016] The present invention is described in detail below in conjunction with accompanying drawing and embodiment:

[0017] A transceiver type underwater acoustic transducer, see attached figure 1 And attached figure 2 , in the figure: compression lining 1, circlip 2, lead wire 3, PPS shell 4, slot 5, backing layer 6, piezoelectric chip 7, matching adhesive 8, ring groove 9.

[0018] In this embodiment, the space in the PPS shell 4 is sequentially equipped with a spring 2, a backing layer 6 and a piezoelectric chip 7 from the outer layer to the inner layer, and the spring 2 is embedded in the slot 5 of the PPS shell 4, and the backing The layer 6 is made of sound-absorbing rubber, and the piezoelectric chip 7 and the PPS shell 4 are connected by a matching adhesive 8 , which is mixed with a high-impedance material.

[0019] In this embodiment, a compression lining 1 is installed between the circlip 2 and the backing layer 6, and the compression lining 1 is connected to the ...

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Abstract

The invention relates to an ultrasonic transducer for flow detection, in particular to a transmitting-receiving underwater transducer which comprises a PPS (polyphenylene sulfite) housing, a piezoelectric chip, a backing layer and a matching adhesive glue, wherein a clamping spring, the backing layer and the piezoelectric chip are arranged in the space of the PPS housing from the inside out; the clamping spring is embedded into a clamping groove of the housing; the backing layer is made of sound absorbing rubber; and the piezoelectric chip and the housing are connected together through the matching adhesive glue mixed with a high-impedance material. Compared with the prior art, the piezoelectric chip and the backing layer are fixed and pressed tightly through the clamping spring so as to achieve a good sound absorbing effect of the backing layer and solve the problems that the output signal is unstable and the backing layer is not firm in bonding and easy to disengage due to the interference of the back reflection signal; and moreover, the piezoelectric chip and the PPS housing are connected together through the matching adhesive glue so as to realize the two-stage acoustic impedance matching of the chip and the liquid, and both the signal conversion ability and output signal stability are effectively improved.

Description

[0001] Technical field: [0002] The invention relates to an ultrasonic transducer for flow detection, in particular to a transceiving type underwater acoustic transducer. Background technique: [0003] The existing ultrasonic transducers for flow detection use PZT material, and the backing is air backing, which has strong transmitting ability but unstable receiving performance, which directly affects the accuracy of flow measurement. Epoxy resin adhesive bonding, long-term use will lead to degumming of the bonding surface, making the metering product invalid. Invention content: [0004] The purpose of the present invention is to solve the problems described in the background technology, and to provide a highly stable transceiver type underwater acoustic transducer that can effectively improve the measurement performance and the quality of measurement products. [0005] The technical solution adopted by the present invention to solve the problem is: [0006] A transceive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K9/12
Inventor 张建伟
Owner 唐山济邦节能科技有限公司
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